diff options
| author | obrien <obrien@FreeBSD.org> | 2004-06-16 05:45:41 +0000 |
|---|---|---|
| committer | obrien <obrien@FreeBSD.org> | 2004-06-16 05:45:41 +0000 |
| commit | 2504df11e1275f63f4c53377bf91eee996360cb5 (patch) | |
| tree | 04848ae93445e503c4190ca1748abe15eabc9e11 /contrib/binutils/bfd/elf32-ppc.c | |
| parent | 6b4c52b743ec5e2e9f65d42b517feefad5017901 (diff) | |
| download | FreeBSD-src-2504df11e1275f63f4c53377bf91eee996360cb5.zip FreeBSD-src-2504df11e1275f63f4c53377bf91eee996360cb5.tar.gz | |
Import of Binutils from the FSF 2.15 branch (just post-.0 release).
These bits are taken from the FSF anoncvs repo on 23-May-2004 04:41:00 UTC.
Diffstat (limited to 'contrib/binutils/bfd/elf32-ppc.c')
| -rw-r--r-- | contrib/binutils/bfd/elf32-ppc.c | 6085 |
1 files changed, 4224 insertions, 1861 deletions
diff --git a/contrib/binutils/bfd/elf32-ppc.c b/contrib/binutils/bfd/elf32-ppc.c index 9abdf61..4eb08ad 100644 --- a/contrib/binutils/bfd/elf32-ppc.c +++ b/contrib/binutils/bfd/elf32-ppc.c @@ -1,23 +1,24 @@ /* PowerPC-specific support for 32-bit ELF - Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 - Free Software Foundation, Inc. + Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, + 2004 Free Software Foundation, Inc. Written by Ian Lance Taylor, Cygnus Support. -This file is part of BFD, the Binary File Descriptor library. + This file is part of BFD, the Binary File Descriptor library. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ /* This file is based on a preliminary PowerPC ELF ABI. The information may not match the final PowerPC ELF ABI. It includes @@ -30,100 +31,24 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "libbfd.h" #include "elf-bfd.h" #include "elf/ppc.h" +#include "elf32-ppc.h" -#define USE_RELA /* we want RELA relocations, not REL */ +/* RELA relocations are used here. */ -static reloc_howto_type *ppc_elf_reloc_type_lookup - PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); -static void ppc_elf_info_to_howto - PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); -static void ppc_elf_howto_init PARAMS ((void)); -static int ppc_elf_sort_rela PARAMS ((const PTR, const PTR)); -static boolean ppc_elf_relax_section - PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); static bfd_reloc_status_type ppc_elf_addr16_ha_reloc - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static boolean ppc_elf_object_p PARAMS ((bfd *)); -static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword)); -static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); - -static int ppc_elf_additional_program_headers PARAMS ((bfd *)); -static boolean ppc_elf_modify_segment_map PARAMS ((bfd *)); - -static asection *ppc_elf_create_got - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean ppc_elf_create_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); - -static boolean ppc_elf_section_from_shdr PARAMS ((bfd *, - Elf32_Internal_Shdr *, - const char *)); -static boolean ppc_elf_fake_sections - PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); - -static elf_linker_section_t *ppc_elf_create_linker_section - PARAMS ((bfd *abfd, - struct bfd_link_info *info, - enum elf_linker_section_enum)); - -static boolean ppc_elf_check_relocs PARAMS ((bfd *, - struct bfd_link_info *, - asection *, - const Elf_Internal_Rela *)); - -static asection * ppc_elf_gc_mark_hook PARAMS ((asection *sec, - struct bfd_link_info *info, - Elf_Internal_Rela *rel, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym)); - -static boolean ppc_elf_gc_sweep_hook PARAMS ((bfd *abfd, - struct bfd_link_info *info, - asection *sec, - const Elf_Internal_Rela *relocs)); - -static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, - struct elf_link_hash_entry *)); - -static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); - -static boolean ppc_elf_relocate_section PARAMS ((bfd *, - struct bfd_link_info *info, - bfd *, - asection *, - bfd_byte *, - Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **)); - -static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *, - struct bfd_link_info *, - const Elf_Internal_Sym *, - const char **, - flagword *, - asection **, - bfd_vma *)); - -static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *, - struct bfd_link_info *, - struct elf_link_hash_entry *, - Elf_Internal_Sym *)); - -static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); -static enum elf_reloc_type_class ppc_elf_reloc_type_class - PARAMS ((const Elf_Internal_Rela *)); -static boolean ppc_elf_grok_prstatus - PARAMS ((bfd *abfd, Elf_Internal_Note *note)); -static boolean ppc_elf_grok_psinfo - PARAMS ((bfd *abfd, Elf_Internal_Note *note)); - -#define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */ -#define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */ -#define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */ + (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); +static bfd_reloc_status_type ppc_elf_unhandled_reloc + (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); + +/* Branch prediction bit for branch taken relocs. */ +#define BRANCH_PREDICT_BIT 0x200000 +/* Mask to set RA in memory instructions. */ +#define RA_REGISTER_MASK 0x001f0000 +/* Value to shift register by to insert RA. */ +#define RA_REGISTER_SHIFT 16 /* The name of the dynamic interpreter. This is put in the .interp section. */ - #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" /* The size in bytes of an entry in the procedure linkage table. */ @@ -135,25 +60,289 @@ static boolean ppc_elf_grok_psinfo /* The number of single-slot PLT entries (the rest use two slots). */ #define PLT_NUM_SINGLE_ENTRIES 8192 -/* Will references to this symbol always reference the symbol - in this object? */ -#define SYMBOL_REFERENCES_LOCAL(INFO, H) \ - ((! INFO->shared \ - || INFO->symbolic \ - || H->dynindx == -1 \ - || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \ - || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \ - && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) - -/* Will _calls_ to this symbol always call the version in this object? */ -#define SYMBOL_CALLS_LOCAL(INFO, H) \ - ((! INFO->shared \ - || INFO->symbolic \ - || H->dynindx == -1 \ - || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \ - && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) +/* Some nop instructions. */ +#define NOP 0x60000000 +#define CROR_151515 0x4def7b82 +#define CROR_313131 0x4ffffb82 + +/* Offset of tp and dtp pointers from start of TLS block. */ +#define TP_OFFSET 0x7000 +#define DTP_OFFSET 0x8000 + + +/* Enumeration to specify the special section. */ +enum elf_linker_section_enum +{ + LINKER_SECTION_SDATA, + LINKER_SECTION_SDATA2 +}; + +/* Sections created by the linker. */ + +typedef struct elf_linker_section +{ + /* pointer to the section */ + asection *section; + /* pointer to the relocations needed for this section */ + asection *rel_section; + /* pointer to the created symbol hash value */ + struct elf_link_hash_entry *sym_hash; + /* offset of symbol from beginning of section */ + bfd_vma sym_offset; +} elf_linker_section_t; + +/* Linked list of allocated pointer entries. This hangs off of the + symbol lists, and provides allows us to return different pointers, + based on different addend's. */ + +typedef struct elf_linker_section_pointers +{ + /* next allocated pointer for this symbol */ + struct elf_linker_section_pointers *next; + /* offset of pointer from beginning of section */ + bfd_vma offset; + /* addend used */ + bfd_vma addend; + /* which linker section this is */ + elf_linker_section_t *lsect; + /* whether address was written yet */ + bfd_boolean written_address_p; +} elf_linker_section_pointers_t; + +struct ppc_elf_obj_tdata +{ + struct elf_obj_tdata elf; + + /* A mapping from local symbols to offsets into the various linker + sections added. This is index by the symbol index. */ + elf_linker_section_pointers_t **linker_section_pointers; +}; + +#define ppc_elf_tdata(bfd) \ + ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any) + +#define elf_local_ptr_offsets(bfd) \ + (ppc_elf_tdata (bfd)->linker_section_pointers) + +/* Override the generic function because we store some extras. */ + +static bfd_boolean +ppc_elf_mkobject (bfd *abfd) +{ + bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata); + abfd->tdata.any = bfd_zalloc (abfd, amt); + if (abfd->tdata.any == NULL) + return FALSE; + return TRUE; +} + +/* The PPC linker needs to keep track of the number of relocs that it + decides to copy as dynamic relocs in check_relocs for each symbol. + This is so that it can later discard them if they are found to be + unnecessary. We store the information in a field extending the + regular ELF linker hash table. */ + +struct ppc_elf_dyn_relocs +{ + struct ppc_elf_dyn_relocs *next; + + /* The input section of the reloc. */ + asection *sec; + + /* Total number of relocs copied for the input section. */ + bfd_size_type count; + + /* Number of pc-relative relocs copied for the input section. */ + bfd_size_type pc_count; +}; + +/* PPC ELF linker hash entry. */ + +struct ppc_elf_link_hash_entry +{ + struct elf_link_hash_entry elf; + + /* If this symbol is used in the linker created sections, the processor + specific backend uses this field to map the field into the offset + from the beginning of the section. */ + elf_linker_section_pointers_t *linker_section_pointer; + + /* Track dynamic relocs copied for this symbol. */ + struct ppc_elf_dyn_relocs *dyn_relocs; + + /* Contexts in which symbol is used in the GOT (or TOC). + TLS_GD .. TLS_TLS bits are or'd into the mask as the + corresponding relocs are encountered during check_relocs. + tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to + indicate the corresponding GOT entry type is not needed. */ +#define TLS_GD 1 /* GD reloc. */ +#define TLS_LD 2 /* LD reloc. */ +#define TLS_TPREL 4 /* TPREL reloc, => IE. */ +#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ +#define TLS_TLS 16 /* Any TLS reloc. */ +#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */ + char tls_mask; +}; + +#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent)) + +/* PPC ELF linker hash table. */ + +struct ppc_elf_link_hash_table +{ + struct elf_link_hash_table elf; + + /* Short-cuts to get to dynamic linker sections. */ + asection *got; + asection *relgot; + asection *plt; + asection *relplt; + asection *dynbss; + asection *relbss; + asection *dynsbss; + asection *relsbss; + elf_linker_section_t *sdata; + elf_linker_section_t *sdata2; + asection *sbss; + + /* Shortcut to .__tls_get_addr. */ + struct elf_link_hash_entry *tls_get_addr; + + /* TLS local dynamic got entry handling. */ + union { + bfd_signed_vma refcount; + bfd_vma offset; + } tlsld_got; + + /* Small local sym to section mapping cache. */ + struct sym_sec_cache sym_sec; +}; + +/* Get the PPC ELF linker hash table from a link_info structure. */ + +#define ppc_elf_hash_table(p) \ + ((struct ppc_elf_link_hash_table *) (p)->hash) + +/* Create an entry in a PPC ELF linker hash table. */ + +static struct bfd_hash_entry * +ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, + const char *string) +{ + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (entry == NULL) + { + entry = bfd_hash_allocate (table, + sizeof (struct ppc_elf_link_hash_entry)); + if (entry == NULL) + return entry; + } + + /* Call the allocation method of the superclass. */ + entry = _bfd_elf_link_hash_newfunc (entry, table, string); + if (entry != NULL) + { + ppc_elf_hash_entry (entry)->linker_section_pointer = NULL; + ppc_elf_hash_entry (entry)->dyn_relocs = NULL; + ppc_elf_hash_entry (entry)->tls_mask = 0; + } + + return entry; +} + +/* Create a PPC ELF linker hash table. */ + +static struct bfd_link_hash_table * +ppc_elf_link_hash_table_create (bfd *abfd) +{ + struct ppc_elf_link_hash_table *ret; + + ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); + if (ret == NULL) + return NULL; + + if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, + ppc_elf_link_hash_newfunc)) + { + free (ret); + return NULL; + } + + return &ret->elf.root; +} + +/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid + copying dynamic variables from a shared lib into an app's dynbss + section, and instead use a dynamic relocation to point into the + shared lib. */ +#define ELIMINATE_COPY_RELOCS 1 + +/* Copy the extra info we tack onto an elf_link_hash_entry. */ + +static void +ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed, + struct elf_link_hash_entry *dir, + struct elf_link_hash_entry *ind) +{ + struct ppc_elf_link_hash_entry *edir, *eind; + + edir = (struct ppc_elf_link_hash_entry *) dir; + eind = (struct ppc_elf_link_hash_entry *) ind; + + if (eind->dyn_relocs != NULL) + { + if (edir->dyn_relocs != NULL) + { + struct ppc_elf_dyn_relocs **pp; + struct ppc_elf_dyn_relocs *p; + + if (ind->root.type == bfd_link_hash_indirect) + abort (); + + /* Add reloc counts against the weak sym to the strong sym + list. Merge any entries against the same section. */ + for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) + { + struct ppc_elf_dyn_relocs *q; + + for (q = edir->dyn_relocs; q != NULL; q = q->next) + if (q->sec == p->sec) + { + q->pc_count += p->pc_count; + q->count += p->count; + *pp = p->next; + break; + } + if (q == NULL) + pp = &p->next; + } + *pp = edir->dyn_relocs; + } + + edir->dyn_relocs = eind->dyn_relocs; + eind->dyn_relocs = NULL; + } + + edir->tls_mask |= eind->tls_mask; + + if (ELIMINATE_COPY_RELOCS + && ind->root.type != bfd_link_hash_indirect + && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) + /* If called to transfer flags for a weakdef during processing + of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. + We clear it ourselves for ELIMINATE_COPY_RELOCS. */ + dir->elf_link_hash_flags |= + (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC + | ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_REF_REGULAR_NONWEAK + | ELF_LINK_HASH_NEEDS_PLT)); + else + _bfd_elf_link_hash_copy_indirect (bed, dir, ind); +} -static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max]; +static reloc_howto_type *ppc_elf_howto_table[R_PPC_max]; static reloc_howto_type ppc_elf_howto_raw[] = { /* This reloc does nothing. */ @@ -161,30 +350,30 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_NONE", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A standard 32 bit relocation. */ HOWTO (R_PPC_ADDR32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* An absolute 26 bit branch; the lower two bits must be zero. FIXME: we don't check that, we just clear them. */ @@ -192,60 +381,60 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR24", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x3fffffc, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A standard 16 bit relocation. */ HOWTO (R_PPC_ADDR16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A 16 bit relocation without overflow. */ HOWTO (R_PPC_ADDR16_LO, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR16_LO", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* The high order 16 bits of an address. */ HOWTO (R_PPC_ADDR16_HI, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR16_HI", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* The high order 16 bits of an address, plus 1 if the contents of the low 16 bits, treated as a signed number, is negative. */ @@ -253,15 +442,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ ppc_elf_addr16_ha_reloc, /* special_function */ "R_PPC_ADDR16_HA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* An absolute 16 bit branch; the lower two bits must be zero. FIXME: we don't check that, we just clear them. */ @@ -269,15 +458,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR14", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* An absolute 16 bit branch, for which bit 10 should be set to indicate that the branch is expected to be taken. The lower two @@ -286,15 +475,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR14_BRTAKEN",/* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* An absolute 16 bit branch, for which bit 10 should be set to indicate that the branch is not expected to be taken. The lower @@ -303,45 +492,45 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_ADDR14_BRNTAKEN",/* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A relative 26 bit branch; the lower two bits must be zero. */ HOWTO (R_PPC_REL24, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_REL24", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* A relative 16 bit branch; the lower two bits must be zero. */ HOWTO (R_PPC_REL14, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_REL14", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* A relative 16 bit branch. Bit 10 should be set to indicate that the branch is expected to be taken. The lower two bits must be @@ -350,15 +539,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_REL14_BRTAKEN", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* A relative 16 bit branch. Bit 10 should be set to indicate that the branch is not expected to be taken. The lower two bits must @@ -367,15 +556,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_REL14_BRNTAKEN",/* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* Like R_PPC_ADDR16, but referring to the GOT table entry for the symbol. */ @@ -383,15 +572,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_GOT16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for the symbol. */ @@ -399,15 +588,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_GOT16_LO", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for the symbol. */ @@ -415,15 +604,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_GOT16_HI", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for the symbol. */ @@ -431,15 +620,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ ppc_elf_addr16_ha_reloc, /* special_function */ "R_PPC_GOT16_HA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_REL24, but referring to the procedure linkage table entry for the symbol. */ @@ -447,15 +636,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_PLTREL24", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* This is used only by the dynamic linker. The symbol should exist both in the object being run and in some shared library. The @@ -466,15 +655,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_COPY", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR32, but used when setting global offset table entries. */ @@ -482,30 +671,30 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_GLOB_DAT", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Marks a procedure linkage table entry for a symbol. */ HOWTO (R_PPC_JMP_SLOT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_JMP_SLOT", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Used only by the dynamic linker. When the object is run, this longword is set to the load address of the object, plus the @@ -514,15 +703,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_RELATIVE", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_REL24, but uses the value of the symbol within the object rather than the final value. Normally used for @@ -531,60 +720,60 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_LOCAL24PC", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* Like R_PPC_ADDR32, but may be unaligned. */ HOWTO (R_PPC_UADDR32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_UADDR32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16, but may be unaligned. */ HOWTO (R_PPC_UADDR16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_UADDR16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 32-bit PC relative */ HOWTO (R_PPC_REL32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_REL32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* 32-bit relocation to the symbol's procedure linkage table. FIXME: not supported. */ @@ -592,15 +781,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_PLT32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 32-bit PC relative relocation to the symbol's procedure linkage table. FIXME: not supported. */ @@ -608,15 +797,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_PLTREL32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for the symbol. */ @@ -624,15 +813,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_PLT16_LO", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for the symbol. */ @@ -640,15 +829,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_PLT16_HI", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for the symbol. */ @@ -656,15 +845,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ ppc_elf_addr16_ha_reloc, /* special_function */ "R_PPC_PLT16_HA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with small data items. */ @@ -672,138 +861,568 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_SDAREL16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16-bit section relative relocation. */ HOWTO (R_PPC_SECTOFF, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_SECTOFF", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16-bit lower half section relative relocation. */ HOWTO (R_PPC_SECTOFF_LO, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_SECTOFF_LO", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16-bit upper half section relative relocation. */ HOWTO (R_PPC_SECTOFF_HI, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_SECTOFF_HI", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16-bit upper half adjusted section relative relocation. */ HOWTO (R_PPC_SECTOFF_HA, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ ppc_elf_addr16_ha_reloc, /* special_function */ "R_PPC_SECTOFF_HA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Marker reloc for TLS. */ + HOWTO (R_PPC_TLS, + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_TLS", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Computes the load module index of the load module that contains the + definition of its TLS sym. */ + HOWTO (R_PPC_DTPMOD32, + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPMOD32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Computes a dtv-relative displacement, the difference between the value + of sym+add and the base address of the thread-local storage block that + contains the definition of sym, minus 0x8000. */ + HOWTO (R_PPC_DTPREL32, + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPREL32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 16 bit dtprel reloc. */ + HOWTO (R_PPC_DTPREL16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPREL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like DTPREL16, but no overflow. */ + HOWTO (R_PPC_DTPREL16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPREL16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like DTPREL16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_DTPREL16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPREL16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like DTPREL16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_DTPREL16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_DTPREL16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Computes a tp-relative displacement, the difference between the value of + sym+add and the value of the thread pointer (r13). */ + HOWTO (R_PPC_TPREL32, + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_TPREL32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 16 bit tprel reloc. */ + HOWTO (R_PPC_TPREL16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_TPREL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like TPREL16, but no overflow. */ + HOWTO (R_PPC_TPREL16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_TPREL16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like TPREL16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_TPREL16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_TPREL16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like TPREL16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_TPREL16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_TPREL16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Allocates two contiguous entries in the GOT to hold a tls_index structure, + with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset + to the first entry. */ + HOWTO (R_PPC_GOT_TLSGD16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSGD16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSGD16, but no overflow. */ + HOWTO (R_PPC_GOT_TLSGD16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSGD16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_GOT_TLSGD16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSGD16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_GOT_TLSGD16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSGD16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Allocates two contiguous entries in the GOT to hold a tls_index structure, + with values (sym+add)@dtpmod and zero, and computes the offset to the + first entry. */ + HOWTO (R_PPC_GOT_TLSLD16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSLD16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSLD16, but no overflow. */ + HOWTO (R_PPC_GOT_TLSLD16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSLD16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_GOT_TLSLD16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSLD16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_GOT_TLSLD16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TLSLD16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes + the offset to the entry. */ + HOWTO (R_PPC_GOT_DTPREL16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_DTPREL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_DTPREL16, but no overflow. */ + HOWTO (R_PPC_GOT_DTPREL16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_DTPREL16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_GOT_DTPREL16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_DTPREL16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_GOT_DTPREL16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_DTPREL16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the + offset to the entry. */ + HOWTO (R_PPC_GOT_TPREL16, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TPREL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TPREL16, but no overflow. */ + HOWTO (R_PPC_GOT_TPREL16_LO, + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TPREL16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */ + HOWTO (R_PPC_GOT_TPREL16_HI, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TPREL16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ + HOWTO (R_PPC_GOT_TPREL16_HA, + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc_elf_unhandled_reloc, /* special_function */ + "R_PPC_GOT_TPREL16_HA", /* name */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* The remaining relocs are from the Embedded ELF ABI, and are not in the SVR4 ELF ABI. */ - /* 32 bit value resulting from the addend minus the symbol */ + /* 32 bit value resulting from the addend minus the symbol. */ HOWTO (R_PPC_EMB_NADDR32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_NADDR32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* 16 bit value resulting from the addend minus the symbol */ + /* 16 bit value resulting from the addend minus the symbol. */ HOWTO (R_PPC_EMB_NADDR16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_NADDR16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* 16 bit value resulting from the addend minus the symbol */ + /* 16 bit value resulting from the addend minus the symbol. */ HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_ADDR16_LO", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* The high order 16 bits of the addend minus the symbol */ + /* The high order 16 bits of the addend minus the symbol. */ HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_NADDR16_HI", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* The high order 16 bits of the result of the addend minus the address, plus 1 if the contents of the low 16 bits, treated as a signed number, @@ -812,49 +1431,49 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ ppc_elf_addr16_ha_reloc, /* special_function */ "R_PPC_EMB_NADDR16_HA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16 bit value resulting from allocating a 4 byte word to hold an address in the .sdata section, and returning the offset from - _SDA_BASE_ for that relocation */ + _SDA_BASE_ for that relocation. */ HOWTO (R_PPC_EMB_SDAI16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_SDAI16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* 16 bit value resulting from allocating a 4 byte word to hold an address in the .sdata2 section, and returning the offset from - _SDA2_BASE_ for that relocation */ + _SDA2_BASE_ for that relocation. */ HOWTO (R_PPC_EMB_SDA2I16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_SDA2I16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with small data items. */ @@ -862,15 +1481,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_SDA2REL", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit signed offset from the appropriate base, and filling in the register @@ -879,15 +1498,15 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_SDA21", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Relocation not handled: R_PPC_EMB_MRKREF */ /* Relocation not handled: R_PPC_EMB_RELSEC16 */ @@ -903,440 +1522,594 @@ static reloc_howto_type ppc_elf_howto_raw[] = { 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_EMB_RELSDA", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ + + /* Phony relocs to handle branch stubs. */ + HOWTO (R_PPC_RELAX32, /* type */ + 0, /* rightshift */ + 0, /* size */ + 0, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_RELAX32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ - /* GNU extension to record C++ vtable hierarchy */ + HOWTO (R_PPC_RELAX32PC, /* type */ + 0, /* rightshift */ + 0, /* size */ + 0, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_RELAX32PC", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* GNU extension to record C++ vtable hierarchy. */ HOWTO (R_PPC_GNU_VTINHERIT, /* type */ 0, /* rightshift */ 0, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_PPC_GNU_VTINHERIT", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* GNU extension to record C++ vtable member usage */ + /* GNU extension to record C++ vtable member usage. */ HOWTO (R_PPC_GNU_VTENTRY, /* type */ 0, /* rightshift */ 0, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_PPC_GNU_VTENTRY", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* Phony reloc to handle AIX style TOC entries */ + /* Phony reloc to handle AIX style TOC entries. */ HOWTO (R_PPC_TOC16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_PPC_TOC16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ }; /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ static void -ppc_elf_howto_init () +ppc_elf_howto_init (void) { unsigned int i, type; - for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++) + for (i = 0; + i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); + i++) { type = ppc_elf_howto_raw[i].type; - BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0])); + if (type >= (sizeof (ppc_elf_howto_table) + / sizeof (ppc_elf_howto_table[0]))) + abort (); ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; } } -/* This function handles relaxing for the PPC with option --mpc860c0[=<n>]. - - The MPC860, revision C0 or earlier contains a bug in the die. - If all of the following conditions are true, the next instruction - to be executed *may* be treated as a no-op. - 1/ A forward branch is executed. - 2/ The branch is predicted as not taken. - 3/ The branch is taken. - 4/ The branch is located in the last 5 words of a page. - (The EOP limit is 5 by default but may be specified as any value from 1-10.) - - Our software solution is to detect these problematic branches in a - linker pass and modify them as follows: - 1/ Unconditional branches - Since these are always predicted taken, - there is no problem and no action is required. - 2/ Conditional backward branches - No problem, no action required. - 3/ Conditional forward branches - Ensure that the "inverse prediction - bit" is set (ensure it is predicted taken). - 4/ Conditional register branches - Ensure that the "y bit" is set - (ensure it is predicted taken). -*/ - -/* Sort sections by address. */ +#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) -static int -ppc_elf_sort_rela (arg1, arg2) - const PTR arg1; - const PTR arg2; -{ - const Elf_Internal_Rela **rela1 = (const Elf_Internal_Rela**) arg1; - const Elf_Internal_Rela **rela2 = (const Elf_Internal_Rela**) arg2; - - /* Sort by offset. */ - return ((*rela1)->r_offset - (*rela2)->r_offset); -} - -static boolean -ppc_elf_relax_section (abfd, isec, link_info, again) - bfd *abfd; - asection *isec; - struct bfd_link_info *link_info; - boolean *again; +static const int shared_stub_entry[] = + { + 0x7c0802a6, /* mflr 0 */ + 0x429f0005, /* bcl 20, 31, .Lxxx */ + 0x7d6802a6, /* mflr 11 */ + 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */ + 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */ + 0x7c0803a6, /* mtlr 0 */ + 0x7d6903a6, /* mtctr 11 */ + 0x4e800420, /* bctr */ + }; + +static const int stub_entry[] = + { + 0x3d600000, /* lis 11,xxx@ha */ + 0x396b0000, /* addi 11,11,xxx@l */ + 0x7d6903a6, /* mtctr 11 */ + 0x4e800420, /* bctr */ + }; + + +static bfd_boolean +ppc_elf_relax_section (bfd *abfd, + asection *isec, + struct bfd_link_info *link_info, + bfd_boolean *again) { -#define PAGESIZE 0x1000 + struct one_fixup + { + struct one_fixup *next; + asection *tsec; + bfd_vma toff; + bfd_vma trampoff; + }; + Elf_Internal_Shdr *symtab_hdr; bfd_byte *contents = NULL; - bfd_byte *free_contents = NULL; + Elf_Internal_Sym *isymbuf = NULL; Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Rela *free_relocs = NULL; - Elf_Internal_Rela **rela_comb = NULL; - int comb_curr, comb_count; + Elf_Internal_Rela *irel, *irelend; + struct one_fixup *fixups = NULL; + bfd_boolean changed; + struct ppc_elf_link_hash_table *ppc_info; + bfd_size_type trampoff; + + *again = FALSE; - /* We never have to do this more than once per input section. */ - *again = false; + /* Nothing to do if there are no relocations. */ + if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0) + return TRUE; /* If needed, initialize this section's cooked size. */ if (isec->_cooked_size == 0) - isec->_cooked_size = isec->_raw_size; + isec->_cooked_size = isec->_raw_size; - /* We're only interested in text sections which overlap the - troublesome area at the end of a page. */ - if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size) + trampoff = (isec->_cooked_size + 3) & (bfd_vma) -4; + /* Space for a branch around any trampolines. */ + trampoff += 4; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + + /* Get a copy of the native relocations. */ + internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL, + link_info->keep_memory); + if (internal_relocs == NULL) + goto error_return; + + ppc_info = ppc_elf_hash_table (link_info); + irelend = internal_relocs + isec->reloc_count; + + /* Get the section contents. */ + /* Get cached copy if it exists. */ + if (elf_section_data (isec)->this_hdr.contents != NULL) + contents = elf_section_data (isec)->this_hdr.contents; + else { - bfd_vma dot, end_page, end_section; - boolean section_modified; + /* Go get them off disk. */ + contents = bfd_malloc (isec->_raw_size); + if (contents == NULL) + goto error_return; - /* Get the section contents. */ - /* Get cached copy if it exists. */ - if (elf_section_data (isec)->this_hdr.contents != NULL) - contents = elf_section_data (isec)->this_hdr.contents; + if (!bfd_get_section_contents (abfd, isec, contents, 0, isec->_raw_size)) + goto error_return; + } + + for (irel = internal_relocs; irel < irelend; irel++) + { + unsigned long r_type = ELF32_R_TYPE (irel->r_info); + bfd_vma symaddr, reladdr, toff, roff; + asection *tsec; + struct one_fixup *f; + size_t insn_offset = 0; + bfd_vma max_branch_offset, val; + bfd_byte *hit_addr; + unsigned long t0; + + switch (r_type) + { + case R_PPC_REL24: + case R_PPC_LOCAL24PC: + case R_PPC_PLTREL24: + max_branch_offset = 1 << 25; + break; + + case R_PPC_REL14: + case R_PPC_REL14_BRTAKEN: + case R_PPC_REL14_BRNTAKEN: + max_branch_offset = 1 << 15; + break; + + default: + continue; + } + + /* Get the value of the symbol referred to by the reloc. */ + if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) + { + /* A local symbol. */ + Elf_Internal_Sym *isym; + + /* Read this BFD's local symbols. */ + if (isymbuf == NULL) + { + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == 0) + goto error_return; + } + isym = isymbuf + ELF32_R_SYM (irel->r_info); + if (isym->st_shndx == SHN_UNDEF) + continue; /* We can't do anything with undefined symbols. */ + else if (isym->st_shndx == SHN_ABS) + tsec = bfd_abs_section_ptr; + else if (isym->st_shndx == SHN_COMMON) + tsec = bfd_com_section_ptr; + else + tsec = bfd_section_from_elf_index (abfd, isym->st_shndx); + + toff = isym->st_value; + } else { - /* Go get them off disk. */ - contents = (bfd_byte *) bfd_malloc (isec->_raw_size); - if (contents == NULL) - goto error_return; - free_contents = contents; - - if (! bfd_get_section_contents (abfd, isec, contents, - (file_ptr) 0, isec->_raw_size)) - goto error_return; - } - - comb_curr = 0; - comb_count = 0; - if (isec->reloc_count) - { - unsigned n; - bfd_size_type amt; - - /* Get a copy of the native relocations. */ - internal_relocs = _bfd_elf32_link_read_relocs ( - abfd, isec, (PTR) NULL, (Elf_Internal_Rela *) NULL, - link_info->keep_memory); - if (internal_relocs == NULL) - goto error_return; - if (! link_info->keep_memory) - free_relocs = internal_relocs; - - /* Setup a faster access method for the reloc info we need. */ - amt = isec->reloc_count; - amt *= sizeof (Elf_Internal_Rela*); - rela_comb = (Elf_Internal_Rela**) bfd_malloc (amt); - if (rela_comb == NULL) - goto error_return; - for (n = 0; n < isec->reloc_count; ++n) - { - long r_type; - - r_type = ELF32_R_TYPE (internal_relocs[n].r_info); - if (r_type < 0 || r_type >= (int) R_PPC_max) - goto error_return; - - /* Prologue constants are sometimes present in the ".text" - sections and they can be identified by their associated relocation. - We don't want to process those words and some others which - can also be identified by their relocations. However, not all - conditional branches will have a relocation so we will - only ignore words that 1) have a reloc, and 2) the reloc - is not applicable to a conditional branch. - The array rela_comb is built here for use in the EOP scan loop. */ - switch (r_type) - { - case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */ - case R_PPC_REL14: /* relative cond. br. */ - case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */ - /* We should check the instruction. */ - break; - default: - /* The word is not a conditional branch - ignore it. */ - rela_comb[comb_count++] = &internal_relocs[n]; - break; - } - } - if (comb_count > 1) - qsort (rela_comb, (size_t) comb_count, sizeof (int), ppc_elf_sort_rela); - } - - /* Enumerate each EOP region that overlaps this section. */ - end_section = isec->vma + isec->_cooked_size; - dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1; - dot -= link_info->mpc860c0; - section_modified = false; - if (dot < isec->vma) /* Increment the start position if this section */ - dot = isec->vma; /* begins in the middle of its first EOP region. */ - for (; - dot < end_section; - dot += PAGESIZE, end_page += PAGESIZE) - { - - /* Check each word in this EOP region. */ - for (; dot < end_page; dot += 4) - { - bfd_vma isec_offset; - unsigned long insn; - boolean skip, modified; - - /* Don't process this word if there is a relocation for it and - the relocation indicates the word is not a conditional branch. */ - skip = false; - isec_offset = dot - isec->vma; - for (; comb_curr<comb_count; ++comb_curr) - { - bfd_vma r_offset; - - r_offset = rela_comb[comb_curr]->r_offset; - if (r_offset >= isec_offset) - { - if (r_offset == isec_offset) skip = true; - break; - } - } - if (skip) continue; - - /* Check the current word for a problematic conditional branch. */ -#define BO0(insn) ((insn) & 0x02000000) -#define BO2(insn) ((insn) & 0x00800000) -#define BO4(insn) ((insn) & 0x00200000) - insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset); - modified = false; - if ((insn & 0xFc000000) == 0x40000000) - { - /* Instruction is BCx */ - if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) - { - bfd_vma target; - /* This branch is predicted as "normal". - If this is a forward branch, it is problematic. */ - - target = insn & 0x0000Fffc; /*extract*/ - target = (target ^ 0x8000) - 0x8000; /*sign extend*/ - if ((insn & 0x00000002) == 0) - target += dot; /*convert to abs*/ - if (target > dot) - { - insn |= 0x00200000; /* set the prediction bit */ - modified = true; - } - } - } - else if ((insn & 0xFc00Fffe) == 0x4c000420) - { - /* Instruction is BCCTRx */ - if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) - { - /* This branch is predicted as not-taken. - If this is a forward branch, it is problematic. - Since we can't tell statically if it will branch forward, - always set the prediction bit. */ - insn |= 0x00200000; /* set the prediction bit */ - modified = true; - } - } - else if ((insn & 0xFc00Fffe) == 0x4c000020) - { - /* Instruction is BCLRx */ - if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) - { - /* This branch is predicted as not-taken. - If this is a forward branch, it is problematic. - Since we can't tell statically if it will branch forward, - always set the prediction bit. */ - insn |= 0x00200000; /* set the prediction bit */ - modified = true; - } - } -#undef BO0 -#undef BO2 -#undef BO4 - if (modified) - { - bfd_put_32 (abfd, (bfd_vma) insn, contents + isec_offset); - section_modified = true; - } - } - } - if (section_modified) + /* Global symbol handling. */ + unsigned long indx; + struct elf_link_hash_entry *h; + + indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; + h = elf_sym_hashes (abfd)[indx]; + + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + + if (r_type == R_PPC_PLTREL24 + && ppc_info->plt != NULL + && h->plt.offset != (bfd_vma) -1) + { + tsec = ppc_info->plt; + toff = h->plt.offset; + } + else if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + tsec = h->root.u.def.section; + toff = h->root.u.def.value; + } + else + continue; + } + + /* If the branch and target are in the same section, you have + no hope of adding stubs. We'll error out later should the + branch overflow. */ + if (tsec == isec) + continue; + + toff += irel->r_addend; + if (tsec->sec_info_type == ELF_INFO_TYPE_MERGE) + toff = _bfd_merged_section_offset (abfd, &tsec, + elf_section_data (tsec)->sec_info, + toff, 0); + + symaddr = tsec->output_section->vma + tsec->output_offset + toff; + + roff = irel->r_offset; + reladdr = isec->output_section->vma + isec->output_offset + roff; + + /* If the branch is in range, no need to do anything. */ + if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset) + continue; + + /* Look for an existing fixup to this address. */ + for (f = fixups; f ; f = f->next) + if (f->tsec == tsec && f->toff == toff) + break; + + if (f == NULL) { - elf_section_data (isec)->this_hdr.contents = contents; - free_contents = NULL; + size_t size; + unsigned long stub_rtype; + + val = trampoff - roff; + if (val >= max_branch_offset) + /* Oh dear, we can't reach a trampoline. Don't try to add + one. We'll report an error later. */ + continue; + + if (link_info->shared) + { + size = 4 * ARRAY_SIZE (shared_stub_entry); + insn_offset = 12; + stub_rtype = R_PPC_RELAX32PC; + } + else + { + size = 4 * ARRAY_SIZE (stub_entry); + insn_offset = 0; + stub_rtype = R_PPC_RELAX32; + } + + /* Hijack the old relocation. Since we need two + relocations for this use a "composite" reloc. */ + irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + stub_rtype); + irel->r_offset = trampoff + insn_offset; + + /* Record the fixup so we don't do it again this section. */ + f = bfd_malloc (sizeof (*f)); + f->next = fixups; + f->tsec = tsec; + f->toff = toff; + f->trampoff = trampoff; + fixups = f; + + trampoff += size; + } + else + { + val = f->trampoff - roff; + if (val >= max_branch_offset) + continue; + + /* Nop out the reloc, since we're finalizing things here. */ + irel->r_info = ELF32_R_INFO (0, R_PPC_NONE); + } + + /* Fix up the existing branch to hit the trampoline. */ + hit_addr = contents + roff; + switch (r_type) + { + case R_PPC_REL24: + case R_PPC_LOCAL24PC: + case R_PPC_PLTREL24: + t0 = bfd_get_32 (abfd, hit_addr); + t0 &= ~0x3fffffc; + t0 |= val & 0x3fffffc; + bfd_put_32 (abfd, t0, hit_addr); + break; + + case R_PPC_REL14: + case R_PPC_REL14_BRTAKEN: + case R_PPC_REL14_BRNTAKEN: + t0 = bfd_get_32 (abfd, hit_addr); + t0 &= ~0xfffc; + t0 |= val & 0xfffc; + bfd_put_32 (abfd, t0, hit_addr); + break; } } - if (rela_comb != NULL) + /* Write out the trampolines. */ + changed = fixups != NULL; + if (fixups != NULL) { - free (rela_comb); - rela_comb = NULL; + const int *stub; + bfd_byte *dest; + bfd_vma val; + int i, size; + + do + { + struct one_fixup *f = fixups; + fixups = fixups->next; + free (f); + } + while (fixups); + + contents = bfd_realloc (contents, trampoff); + if (contents == NULL) + goto error_return; + + isec->_cooked_size = (isec->_cooked_size + 3) & (bfd_vma) -4; + /* Branch around the trampolines. */ + val = trampoff - isec->_cooked_size + 0x48000000; + dest = contents + isec->_cooked_size; + isec->_cooked_size = trampoff; + bfd_put_32 (abfd, val, dest); + dest += 4; + + if (link_info->shared) + { + stub = shared_stub_entry; + size = ARRAY_SIZE (shared_stub_entry); + } + else + { + stub = stub_entry; + size = ARRAY_SIZE (stub_entry); + } + + i = 0; + while (dest < contents + trampoff) + { + bfd_put_32 (abfd, stub[i], dest); + i++; + if (i == size) + i = 0; + dest += 4; + } + BFD_ASSERT (i == 0); } - if (free_relocs != NULL) + if (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) { - free (free_relocs); - free_relocs = NULL; + if (! link_info->keep_memory) + free (isymbuf); + else + { + /* Cache the symbols for elf_link_input_bfd. */ + symtab_hdr->contents = (unsigned char *) isymbuf; + } } - if (free_contents != NULL) + if (contents != NULL + && elf_section_data (isec)->this_hdr.contents != contents) { - if (! link_info->keep_memory) - free (free_contents); + if (!changed && !link_info->keep_memory) + free (contents); else { /* Cache the section contents for elf_link_input_bfd. */ elf_section_data (isec)->this_hdr.contents = contents; } - free_contents = NULL; } - return true; + if (elf_section_data (isec)->relocs != internal_relocs) + { + if (!changed) + free (internal_relocs); + else + elf_section_data (isec)->relocs = internal_relocs; + } -error_return: - if (rela_comb != NULL) - free (rela_comb); - if (free_relocs != NULL) - free (free_relocs); - if (free_contents != NULL) - free (free_contents); - return false; + *again = changed; + return TRUE; + + error_return: + if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents) + free (isymbuf); + if (contents != NULL + && elf_section_data (isec)->this_hdr.contents != contents) + free (contents); + if (internal_relocs != NULL + && elf_section_data (isec)->relocs != internal_relocs) + free (internal_relocs); + return FALSE; } static reloc_howto_type * -ppc_elf_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { - enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE; + enum elf_ppc_reloc_type r; + /* Initialize howto table if not already done. */ if (!ppc_elf_howto_table[R_PPC_ADDR32]) - /* Initialize howto table if needed. */ ppc_elf_howto_init (); - switch ((int) code) + switch (code) { default: - return (reloc_howto_type *) NULL; - - case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break; - case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break; - case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break; - case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break; - case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break; - case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break; - case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break; - case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break; - case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break; - case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break; - case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break; - case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break; - case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break; - case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break; - case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break; - case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break; - case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break; - case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break; - case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break; - case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break; - case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break; - case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break; - case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break; - case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break; - case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break; - case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break; - case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break; - case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break; - case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break; - case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC_SECTOFF; break; - case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break; - case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break; - case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break; - case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break; - case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break; - case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break; - case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break; - case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break; - case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break; - case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break; - case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break; - case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break; - case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break; - case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break; - case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break; - case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break; - case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break; - case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break; - case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break; - case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break; - case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break; - case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC_GNU_VTINHERIT; break; - case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC_GNU_VTENTRY; break; - } - - return ppc_elf_howto_table[(int) ppc_reloc]; + return NULL; + + case BFD_RELOC_NONE: r = R_PPC_NONE; break; + case BFD_RELOC_32: r = R_PPC_ADDR32; break; + case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break; + case BFD_RELOC_16: r = R_PPC_ADDR16; break; + case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break; + case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break; + case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break; + case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break; + case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break; + case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break; + case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break; + case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break; + case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break; + case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break; + case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break; + case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break; + case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break; + case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break; + case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break; + case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break; + case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break; + case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break; + case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break; + case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break; + case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break; + case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break; + case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break; + case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break; + case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break; + case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break; + case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break; + case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break; + case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break; + case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break; + case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break; + case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break; + case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break; + case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break; + case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break; + case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break; + case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break; + case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break; + case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break; + case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break; + case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break; + case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break; + case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break; + case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break; + case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break; + case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break; + case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break; + case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break; + case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break; + case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break; + case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break; + case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break; + case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break; + case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break; + case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break; + case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break; + case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break; + case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break; + case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break; + case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break; + case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break; + case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break; + case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break; + case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break; + case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break; + case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break; + case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break; + case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break; + case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break; + case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break; + case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break; + case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break; + case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break; + case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break; + case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break; + case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break; + case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break; + } + + return ppc_elf_howto_table[r]; }; /* Set the howto pointer for a PowerPC ELF reloc. */ static void -ppc_elf_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf32_Internal_Rela *dst; +ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_Internal_Rela *dst) { + /* Initialize howto table if not already done. */ if (!ppc_elf_howto_table[R_PPC_ADDR32]) - /* Initialize howto table if needed. */ ppc_elf_howto_init (); BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); @@ -1346,15 +2119,13 @@ ppc_elf_info_to_howto (abfd, cache_ptr, dst) /* Handle the R_PPC_ADDR16_HA reloc. */ static bfd_reloc_status_type -ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, - output_bfd, error_message) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *reloc_entry; - asymbol *symbol; - PTR data ATTRIBUTE_UNUSED; - asection *input_section; - bfd *output_bfd; - char **error_message ATTRIBUTE_UNUSED; +ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED, + arelent *reloc_entry, + asymbol *symbol, + void *data ATTRIBUTE_UNUSED, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) { bfd_vma relocation; @@ -1381,12 +2152,37 @@ ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, return bfd_reloc_continue; } +static bfd_reloc_status_type +ppc_elf_unhandled_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + void *data, + asection *input_section, + bfd *output_bfd, + char **error_message) +{ + /* If this is a relocatable link (output_bfd test tells us), just + call the generic function. Any adjustment will be done at final + link time. */ + if (output_bfd != NULL) + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + if (error_message != NULL) + { + static char buf[60]; + sprintf (buf, _("generic linker can't handle %s"), + reloc_entry->howto->name); + *error_message = buf; + } + return bfd_reloc_dangerous; +} + /* Fix bad default arch selected for a 32 bit input bfd when the default is 64 bit. */ -static boolean -ppc_elf_object_p (abfd) - bfd *abfd; +static bfd_boolean +ppc_elf_object_p (bfd *abfd) { if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) { @@ -1399,73 +2195,75 @@ ppc_elf_object_p (abfd) BFD_ASSERT (abfd->arch_info->bits_per_word == 32); } } - return true; + return TRUE; } /* Function to set whether a module needs the -mrelocatable bit set. */ -static boolean -ppc_elf_set_private_flags (abfd, flags) - bfd *abfd; - flagword flags; +static bfd_boolean +ppc_elf_set_private_flags (bfd *abfd, flagword flags) { BFD_ASSERT (!elf_flags_init (abfd) || elf_elfheader (abfd)->e_flags == flags); elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = true; - return true; + elf_flags_init (abfd) = TRUE; + return TRUE; } /* Merge backend specific data from an object file to the output - object file when linking */ -static boolean -ppc_elf_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; + object file when linking. */ + +static bfd_boolean +ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) { flagword old_flags; flagword new_flags; - boolean error; + bfd_boolean error; - /* Check if we have the same endianess */ + /* Check if we have the same endianess. */ if (! _bfd_generic_verify_endian_match (ibfd, obfd)) - return false; + return FALSE; if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; + return TRUE; new_flags = elf_elfheader (ibfd)->e_flags; old_flags = elf_elfheader (obfd)->e_flags; - if (!elf_flags_init (obfd)) /* First call, no flags set */ + if (!elf_flags_init (obfd)) { - elf_flags_init (obfd) = true; + /* First call, no flags set. */ + elf_flags_init (obfd) = TRUE; elf_elfheader (obfd)->e_flags = new_flags; } - else if (new_flags == old_flags) /* Compatible flags are ok */ + /* Compatible flags are ok. */ + else if (new_flags == old_flags) ; - else /* Incompatible flags */ + /* Incompatible flags. */ + else { - /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked - with either. */ - error = false; + /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib + to be linked with either. */ + error = FALSE; if ((new_flags & EF_PPC_RELOCATABLE) != 0 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) { - error = true; + error = TRUE; (*_bfd_error_handler) - (_("%s: compiled with -mrelocatable and linked with modules compiled normally"), + (_("%s: compiled with -mrelocatable and linked with " + "modules compiled normally"), bfd_archive_filename (ibfd)); } else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 && (old_flags & EF_PPC_RELOCATABLE) != 0) { - error = true; + error = TRUE; (*_bfd_error_handler) - (_("%s: compiled normally and linked with modules compiled with -mrelocatable"), + (_("%s: compiled normally and linked with " + "modules compiled with -mrelocatable"), bfd_archive_filename (ibfd)); } @@ -1474,51 +2272,50 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd) elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; /* The output is -mrelocatable iff it can't be -mrelocatable-lib, - but each input file is either -mrelocatable or -mrelocatable-lib. */ + but each input file is either -mrelocatable or -mrelocatable-lib. */ if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; - /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */ + /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if + any module uses it. */ elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); - new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); - old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); + new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); + old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); - /* Warn about any other mismatches */ + /* Warn about any other mismatches. */ if (new_flags != old_flags) { - error = true; + error = TRUE; (*_bfd_error_handler) - (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), + (_("%s: uses different e_flags (0x%lx) fields " + "than previous modules (0x%lx)"), bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); } if (error) { bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } } - return true; + return TRUE; } /* Handle a PowerPC specific section when reading an object file. This is called when elfcode.h finds a section with an unknown type. */ -static boolean -ppc_elf_section_from_shdr (abfd, hdr, name) - bfd *abfd; - Elf32_Internal_Shdr *hdr; - const char *name; +static bfd_boolean +ppc_elf_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr, const char *name) { asection *newsect; flagword flags; if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) - return false; + return FALSE; newsect = hdr->bfd_section; flags = bfd_get_section_flags (abfd, newsect); @@ -1529,16 +2326,15 @@ ppc_elf_section_from_shdr (abfd, hdr, name) flags |= SEC_SORT_ENTRIES; bfd_set_section_flags (abfd, newsect, flags); - return true; + return TRUE; } /* Set up any other section flags and such that may be necessary. */ -static boolean -ppc_elf_fake_sections (abfd, shdr, asect) - bfd *abfd ATTRIBUTE_UNUSED; - Elf32_Internal_Shdr *shdr; - asection *asect; +static bfd_boolean +ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, + Elf_Internal_Shdr *shdr, + asection *asect) { if ((asect->flags & SEC_EXCLUDE) != 0) shdr->sh_flags |= SHF_EXCLUDE; @@ -1546,75 +2342,363 @@ ppc_elf_fake_sections (abfd, shdr, asect) if ((asect->flags & SEC_SORT_ENTRIES) != 0) shdr->sh_type = SHT_ORDERED; - return true; + return TRUE; +} + +/* Find a linker generated pointer with a given addend and type. */ + +static elf_linker_section_pointers_t * +elf_find_pointer_linker_section + (elf_linker_section_pointers_t *linker_pointers, + bfd_vma addend, + elf_linker_section_t *lsect) +{ + for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next) + if (lsect == linker_pointers->lsect && addend == linker_pointers->addend) + return linker_pointers; + + return NULL; +} + +/* Allocate a pointer to live in a linker created section. */ + +static bfd_boolean +elf_create_pointer_linker_section (bfd *abfd, + struct bfd_link_info *info, + elf_linker_section_t *lsect, + struct elf_link_hash_entry *h, + const Elf_Internal_Rela *rel) +{ + elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; + elf_linker_section_pointers_t *linker_section_ptr; + unsigned long r_symndx = ELF32_R_SYM (rel->r_info); + bfd_size_type amt; + + BFD_ASSERT (lsect != NULL); + + /* Is this a global symbol? */ + if (h != NULL) + { + struct ppc_elf_link_hash_entry *eh; + + /* Has this symbol already been allocated? If so, our work is done. */ + eh = (struct ppc_elf_link_hash_entry *) h; + if (elf_find_pointer_linker_section (eh->linker_section_pointer, + rel->r_addend, + lsect)) + return TRUE; + + ptr_linker_section_ptr = &eh->linker_section_pointer; + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + if (lsect->rel_section) + lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela); + } + else + { + /* Allocation of a pointer to a local symbol. */ + elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); + + /* Allocate a table to hold the local symbols if first time. */ + if (!ptr) + { + unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; + + amt = num_symbols; + amt *= sizeof (elf_linker_section_pointers_t *); + ptr = bfd_zalloc (abfd, amt); + + if (!ptr) + return FALSE; + + elf_local_ptr_offsets (abfd) = ptr; + } + + /* Has this symbol already been allocated? If so, our work is done. */ + if (elf_find_pointer_linker_section (ptr[r_symndx], + rel->r_addend, + lsect)) + return TRUE; + + ptr_linker_section_ptr = &ptr[r_symndx]; + + if (info->shared) + { + /* If we are generating a shared object, we need to + output a R_<xxx>_RELATIVE reloc so that the + dynamic linker can adjust this GOT entry. */ + BFD_ASSERT (lsect->rel_section != NULL); + lsect->rel_section->_raw_size += sizeof (Elf32_External_Rela); + } + } + + /* Allocate space for a pointer in the linker section, and allocate + a new pointer record from internal memory. */ + BFD_ASSERT (ptr_linker_section_ptr != NULL); + amt = sizeof (elf_linker_section_pointers_t); + linker_section_ptr = bfd_alloc (abfd, amt); + + if (!linker_section_ptr) + return FALSE; + + linker_section_ptr->next = *ptr_linker_section_ptr; + linker_section_ptr->addend = rel->r_addend; + linker_section_ptr->lsect = lsect; + linker_section_ptr->written_address_p = FALSE; + *ptr_linker_section_ptr = linker_section_ptr; + + linker_section_ptr->offset = lsect->section->_raw_size; + lsect->section->_raw_size += 4; + +#ifdef DEBUG + fprintf (stderr, + "Create pointer in linker section %s, offset = %ld, section size = %ld\n", + lsect->name, (long) linker_section_ptr->offset, + (long) lsect->section->_raw_size); +#endif + + return TRUE; +} + +#define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR) + +/* Fill in the address for a pointer generated in a linker section. */ + +static bfd_vma +elf_finish_pointer_linker_section (bfd *output_bfd, + bfd *input_bfd, + struct bfd_link_info *info, + elf_linker_section_t *lsect, + struct elf_link_hash_entry *h, + bfd_vma relocation, + const Elf_Internal_Rela *rel, + int relative_reloc) +{ + elf_linker_section_pointers_t *linker_section_ptr; + + BFD_ASSERT (lsect != NULL); + + if (h != NULL) + { + /* Handle global symbol. */ + struct ppc_elf_link_hash_entry *eh; + + eh = (struct ppc_elf_link_hash_entry *) h; + linker_section_ptr + = elf_find_pointer_linker_section (eh->linker_section_pointer, + rel->r_addend, + lsect); + + BFD_ASSERT (linker_section_ptr != NULL); + + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && info->symbolic + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally. We must initialize this entry in the + global section. + + When doing a dynamic link, we create a .rela.<xxx> + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if (!linker_section_ptr->written_address_p) + { + linker_section_ptr->written_address_p = TRUE; + bfd_put_ptr (output_bfd, + relocation + linker_section_ptr->addend, + (lsect->section->contents + + linker_section_ptr->offset)); + } + } + } + else + { + /* Handle local symbol. */ + unsigned long r_symndx = ELF32_R_SYM (rel->r_info); + BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); + BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL); + linker_section_ptr = (elf_find_pointer_linker_section + (elf_local_ptr_offsets (input_bfd)[r_symndx], + rel->r_addend, + lsect)); + + BFD_ASSERT (linker_section_ptr != NULL); + + /* Write out pointer if it hasn't been rewritten out before. */ + if (!linker_section_ptr->written_address_p) + { + linker_section_ptr->written_address_p = TRUE; + bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend, + lsect->section->contents + linker_section_ptr->offset); + + if (info->shared) + { + /* We need to generate a relative reloc for the dynamic + linker. */ + + asection *srel = lsect->rel_section; + Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL]; + bfd_byte *erel; + const struct elf_backend_data *bed; + unsigned int i; + + BFD_ASSERT (srel != NULL); + + bed = get_elf_backend_data (output_bfd); + for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) + { + outrel[i].r_offset = (lsect->section->output_section->vma + + lsect->section->output_offset + + linker_section_ptr->offset); + outrel[i].r_info = 0; + outrel[i].r_addend = 0; + } + outrel[0].r_info = ELF32_R_INFO (0, relative_reloc); + erel = lsect->section->contents; + erel += (elf_section_data (lsect->section)->rel_count++ + * sizeof (Elf32_External_Rela)); + bfd_elf32_swap_reloca_out (output_bfd, outrel, erel); + } + } + } + + relocation = (lsect->section->output_offset + + linker_section_ptr->offset + - lsect->sym_offset); + +#ifdef DEBUG + fprintf (stderr, + "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", + lsect->name, (long) relocation, (long) relocation); +#endif + + /* Subtract out the addend, because it will get added back in by the normal + processing. */ + return relocation - linker_section_ptr->addend; } /* Create a special linker section */ static elf_linker_section_t * -ppc_elf_create_linker_section (abfd, info, which) - bfd *abfd; - struct bfd_link_info *info; - enum elf_linker_section_enum which; +ppc_elf_create_linker_section (bfd *abfd, + struct bfd_link_info *info, + enum elf_linker_section_enum which) { - bfd *dynobj = elf_hash_table (info)->dynobj; elf_linker_section_t *lsect; + struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info); + asection *s; + bfd_size_type amt; + flagword flags; + const char *name; + const char *rel_name; + const char *sym_name; + bfd_vma sym_offset; + + /* Both of these sections are (technically) created by the user + putting data in them, so they shouldn't be marked + SEC_LINKER_CREATED. + + The linker creates them so it has somewhere to attach their + respective symbols. In fact, if they were empty it would + be OK to leave the symbol set to 0 (or any random number), because + the appropriate register should never be used. */ + flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; + sym_offset = 32768; + + switch (which) + { + default: + abort (); + return NULL; + + case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ + name = ".sdata"; + rel_name = ".rela.sdata"; + sym_name = "_SDA_BASE_"; + break; + + case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ + name = ".sdata2"; + rel_name = ".rela.sdata2"; + sym_name = "_SDA2_BASE_"; + flags |= SEC_READONLY; + break; + } - /* Record the first bfd section that needs the special section */ - if (!dynobj) - dynobj = elf_hash_table (info)->dynobj = abfd; + /* Record the first bfd that needs the special sections. */ + if (!htab->elf.dynobj) + htab->elf.dynobj = abfd; - /* If this is the first time, create the section */ - lsect = elf_linker_section (dynobj, which); - if (!lsect) + amt = sizeof (elf_linker_section_t); + lsect = bfd_zalloc (htab->elf.dynobj, amt); + + lsect->sym_offset = sym_offset; + + /* See if the sections already exist. */ + s = bfd_get_section_by_name (htab->elf.dynobj, name); + if (s == NULL || (s->flags & flags) != flags) { - elf_linker_section_t defaults; - static elf_linker_section_t zero_section; + s = bfd_make_section_anyway (htab->elf.dynobj, name); + if (s == NULL + || !bfd_set_section_flags (htab->elf.dynobj, s, flags)) + return NULL; + } + lsect->section = s; - defaults = zero_section; - defaults.which = which; - defaults.hole_written_p = false; - defaults.alignment = 2; + if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2 + && !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) + return NULL; - /* Both of these sections are (technically) created by the user - putting data in them, so they shouldn't be marked - SEC_LINKER_CREATED. + s->_raw_size = align_power (s->_raw_size, 2); - The linker creates them so it has somewhere to attach their - respective symbols. In fact, if they were empty it would - be OK to leave the symbol set to 0 (or any random number), because - the appropriate register should never be used. */ - defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY); +#ifdef DEBUG + fprintf (stderr, "Creating section %s, current size = %ld\n", + name, (long) s->_raw_size); +#endif - switch (which) - { - default: - (*_bfd_error_handler) (_("%s: Unknown special linker type %d"), - bfd_get_filename (abfd), - (int) which); + if (sym_name) + { + struct elf_link_hash_entry *h; + struct bfd_link_hash_entry *bh; - bfd_set_error (bfd_error_bad_value); - return (elf_linker_section_t *) 0; - - case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ - defaults.name = ".sdata"; - defaults.rel_name = ".rela.sdata"; - defaults.bss_name = ".sbss"; - defaults.sym_name = "_SDA_BASE_"; - defaults.sym_offset = 32768; - break; +#ifdef DEBUG + fprintf (stderr, "Adding %s to section %s\n", sym_name, name); +#endif + bh = bfd_link_hash_lookup (info->hash, sym_name, + FALSE, FALSE, FALSE); - case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ - defaults.name = ".sdata2"; - defaults.rel_name = ".rela.sdata2"; - defaults.bss_name = ".sbss2"; - defaults.sym_name = "_SDA2_BASE_"; - defaults.sym_offset = 32768; - defaults.flags |= SEC_READONLY; - break; - } + if ((bh == NULL || bh->type == bfd_link_hash_undefined) + && !(_bfd_generic_link_add_one_symbol + (info, abfd, sym_name, BSF_GLOBAL, s, sym_offset, NULL, + FALSE, get_elf_backend_data (abfd)->collect, &bh))) + return NULL; + h = (struct elf_link_hash_entry *) bh; - lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); + h->type = STT_OBJECT; + lsect->sym_hash = h; + + if (info->shared + && ! bfd_elf_link_record_dynamic_symbol (info, h)) + return NULL; + } + + if (info->shared) + { + s = bfd_make_section_anyway (htab->elf.dynobj, rel_name); + lsect->rel_section = s; + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_flags (htab->elf.dynobj, s, flags) + || ! bfd_set_section_alignment (htab->elf.dynobj, s, 2)) + return NULL; } return lsect; @@ -1624,8 +2708,7 @@ ppc_elf_create_linker_section (abfd, info, which) need to bump up the number of section headers. */ static int -ppc_elf_additional_program_headers (abfd) - bfd *abfd; +ppc_elf_additional_program_headers (bfd *abfd) { asection *s; int ret; @@ -1649,73 +2732,88 @@ ppc_elf_additional_program_headers (abfd) /* Modify the segment map if needed. */ -static boolean -ppc_elf_modify_segment_map (abfd) - bfd *abfd ATTRIBUTE_UNUSED; +static bfd_boolean +ppc_elf_modify_segment_map (bfd *abfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info ATTRIBUTE_UNUSED) { - return true; + return TRUE; } /* The powerpc .got has a blrl instruction in it. Mark it executable. */ -static asection * -ppc_elf_create_got (abfd, info) - bfd *abfd; - struct bfd_link_info *info; +static bfd_boolean +ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) { - register asection *s; + struct ppc_elf_link_hash_table *htab; + asection *s; flagword flags; if (!_bfd_elf_create_got_section (abfd, info)) - return NULL; + return FALSE; - s = bfd_get_section_by_name (abfd, ".got"); + htab = ppc_elf_hash_table (info); + htab->got = s = bfd_get_section_by_name (abfd, ".got"); if (s == NULL) abort (); flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); if (!bfd_set_section_flags (abfd, s, flags)) - return NULL; - return s; + return FALSE; + + htab->relgot = bfd_make_section (abfd, ".rela.got"); + if (!htab->relgot + || ! bfd_set_section_flags (abfd, htab->relgot, + (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (abfd, htab->relgot, 2)) + return FALSE; + + return TRUE; } /* We have to create .dynsbss and .rela.sbss here so that they get mapped to output sections (just like _bfd_elf_create_dynamic_sections has to create .dynbss and .rela.bss). */ -static boolean -ppc_elf_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; +static bfd_boolean +ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) { - register asection *s; + struct ppc_elf_link_hash_table *htab; + asection *s; flagword flags; - if (!ppc_elf_create_got (abfd, info)) - return false; + htab = ppc_elf_hash_table (info); + + if (htab->got == NULL + && !ppc_elf_create_got (abfd, info)) + return FALSE; if (!_bfd_elf_create_dynamic_sections (abfd, info)) - return false; + return FALSE; flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); - s = bfd_make_section (abfd, ".dynsbss"); + htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss"); + htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss"); if (s == NULL || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) - return false; + return FALSE; if (! info->shared) { - s = bfd_make_section (abfd, ".rela.sbss"); + htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss"); + htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss"); if (s == NULL || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) || ! bfd_set_section_alignment (abfd, s, 2)) - return false; + return FALSE; } - s = bfd_get_section_by_name (abfd, ".plt"); + htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); + htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); if (s == NULL) abort (); @@ -1729,22 +2827,22 @@ ppc_elf_create_dynamic_sections (abfd, info) change the definition to something the rest of the link can understand. */ -static boolean -ppc_elf_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; +static bfd_boolean +ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) { - bfd *dynobj = elf_hash_table (info)->dynobj; + struct ppc_elf_link_hash_table *htab; asection *s; unsigned int power_of_two; - bfd_vma plt_offset; #ifdef DEBUG - fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string); + fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", + h->root.root.string); #endif /* Make sure we know what is going on here. */ - BFD_ASSERT (dynobj != NULL + htab = ppc_elf_hash_table (info); + BFD_ASSERT (htab->elf.dynobj != NULL && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) || h->weakdef != NULL || ((h->elf_link_hash_flags @@ -1754,86 +2852,31 @@ ppc_elf_adjust_dynamic_symbol (info, h) && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))); - /* If this is a function, put it in the procedure linkage table. We - will fill in the contents of the procedure linkage table later, - when we know the address of the .got section. */ + /* Deal with function syms. */ if (h->type == STT_FUNC || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) { - if (! elf_hash_table (info)->dynamic_sections_created - || SYMBOL_CALLS_LOCAL (info, h) - || (info->shared && h->plt.refcount <= 0)) + /* Clear procedure linkage table information for any symbol that + won't need a .plt entry. */ + if (h->plt.refcount <= 0 + || SYMBOL_CALLS_LOCAL (info, h) + || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT + && h->root.type == bfd_link_hash_undefweak)) { /* A PLT entry is not required/allowed when: 1. We are not using ld.so; because then the PLT entry - can't be set up, so we can't use one. + can't be set up, so we can't use one. In this case, + ppc_elf_adjust_dynamic_symbol won't even be called. - 2. We know for certain that a call to this symbol - will go to this object. + 2. GC has rendered the entry unused. - 3. GC has rendered the entry unused. - Note, however, that in an executable all references to the - symbol go to the PLT, so we can't turn it off in that case. - ??? The correct thing to do here is to reference count - all uses of the symbol, not just those to the GOT or PLT. */ + 3. We know for certain that a call to this symbol + will go to this object, or will remain undefined. */ h->plt.offset = (bfd_vma) -1; h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; - return true; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - } - BFD_ASSERT (h->dynindx != -1); - - s = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (s != NULL); - - /* If this is the first .plt entry, make room for the special - first entry. */ - if (s->_raw_size == 0) - s->_raw_size += PLT_INITIAL_ENTRY_SIZE; - - /* The PowerPC PLT is actually composed of two parts, the first part - is 2 words (for a load and a jump), and then there is a remaining - word available at the end. */ - plt_offset = (PLT_INITIAL_ENTRY_SIZE - + (PLT_SLOT_SIZE - * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) - / PLT_ENTRY_SIZE))); - - /* If this symbol is not defined in a regular file, and we are - not generating a shared library, then set the symbol to this - location in the .plt. This is required to make function - pointers compare as equal between the normal executable and - the shared library. */ - if (! info->shared - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - h->root.u.def.section = s; - h->root.u.def.value = plt_offset; } - - h->plt.offset = plt_offset; - - /* Make room for this entry. After the 8192nd entry, room - for two entries is allocated. */ - if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE - >= PLT_NUM_SINGLE_ENTRIES) - s->_raw_size += 2 * PLT_ENTRY_SIZE; - else - s->_raw_size += PLT_ENTRY_SIZE; - - /* We also need to make an entry in the .rela.plt section. */ - s = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (s != NULL); - s->_raw_size += sizeof (Elf32_External_Rela); - - return true; + return TRUE; } else h->plt.offset = (bfd_vma) -1; @@ -1847,7 +2890,11 @@ ppc_elf_adjust_dynamic_symbol (info, h) || h->weakdef->root.type == bfd_link_hash_defweak); h->root.u.def.section = h->weakdef->root.u.def.section; h->root.u.def.value = h->weakdef->root.u.def.value; - return true; + if (ELIMINATE_COPY_RELOCS) + h->elf_link_hash_flags + = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) + | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); + return TRUE; } /* This is a reference to a symbol defined by a dynamic object which @@ -1858,7 +2905,31 @@ ppc_elf_adjust_dynamic_symbol (info, h) For such cases we need not do anything here; the relocations will be handled correctly by relocate_section. */ if (info->shared) - return true; + return TRUE; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) + return TRUE; + + if (ELIMINATE_COPY_RELOCS) + { + struct ppc_elf_dyn_relocs *p; + for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) + { + s = p->sec->output_section; + if (s != NULL && (s->flags & SEC_READONLY) != 0) + break; + } + + /* If we didn't find any dynamic relocs in read-only sections, then + we'll be keeping the dynamic relocs and avoiding the copy reloc. */ + if (p == NULL) + { + h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; + return TRUE; + } + } /* We must allocate the symbol in our .dynbss section, which will become part of the .bss section of the executable. There will be @@ -1874,10 +2945,10 @@ ppc_elf_adjust_dynamic_symbol (info, h) allocate it in .sbss. FIXME: It would be better to do this if and only if there were actually SDAREL relocs for that symbol. */ - if (h->size <= elf_gp_size (dynobj)) - s = bfd_get_section_by_name (dynobj, ".dynsbss"); + if (h->size <= elf_gp_size (htab->elf.dynobj)) + s = htab->dynsbss; else - s = bfd_get_section_by_name (dynobj, ".dynbss"); + s = htab->dynbss; BFD_ASSERT (s != NULL); /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to @@ -1888,10 +2959,10 @@ ppc_elf_adjust_dynamic_symbol (info, h) { asection *srel; - if (h->size <= elf_gp_size (dynobj)) - srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); + if (h->size <= elf_gp_size (htab->elf.dynobj)) + srel = htab->relsbss; else - srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + srel = htab->relbss; BFD_ASSERT (srel != NULL); srel->_raw_size += sizeof (Elf32_External_Rela); h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; @@ -1906,10 +2977,10 @@ ppc_elf_adjust_dynamic_symbol (info, h) /* Apply the required alignment. */ s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); - if (power_of_two > bfd_get_section_alignment (dynobj, s)) + if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) { - if (! bfd_set_section_alignment (dynobj, s, power_of_two)) - return false; + if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) + return FALSE; } /* Define the symbol as being at this point in the section. */ @@ -1919,93 +2990,426 @@ ppc_elf_adjust_dynamic_symbol (info, h) /* Increment the section size to make room for the symbol. */ s->_raw_size += h->size; - return true; + return TRUE; } +/* Of those relocs that might be copied as dynamic relocs, this macro + selects those that must be copied when linking a shared library, + even when the symbol is local. */ + +#define MUST_BE_DYN_RELOC(RTYPE) \ + ((RTYPE) != R_PPC_REL24 \ + && (RTYPE) != R_PPC_REL14 \ + && (RTYPE) != R_PPC_REL14_BRTAKEN \ + && (RTYPE) != R_PPC_REL14_BRNTAKEN \ + && (RTYPE) != R_PPC_REL32) + +/* Allocate space in associated reloc sections for dynamic relocs. */ + +static bfd_boolean +allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) +{ + struct bfd_link_info *info = inf; + struct ppc_elf_link_hash_entry *eh; + struct ppc_elf_link_hash_table *htab; + struct ppc_elf_dyn_relocs *p; + + if (h->root.type == bfd_link_hash_indirect) + return TRUE; + + if (h->root.type == bfd_link_hash_warning) + /* When warning symbols are created, they **replace** the "real" + entry in the hash table, thus we never get to see the real + symbol in a hash traversal. So look at it now. */ + h = (struct elf_link_hash_entry *) h->root.u.i.link; + + htab = ppc_elf_hash_table (info); + if (htab->elf.dynamic_sections_created + && h->plt.refcount > 0) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + if (info->shared + || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) + { + asection *s = htab->plt; + + /* If this is the first .plt entry, make room for the special + first entry. */ + if (s->_raw_size == 0) + s->_raw_size += PLT_INITIAL_ENTRY_SIZE; + + /* The PowerPC PLT is actually composed of two parts, the + first part is 2 words (for a load and a jump), and then + there is a remaining word available at the end. */ + h->plt.offset = (PLT_INITIAL_ENTRY_SIZE + + (PLT_SLOT_SIZE + * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) + / PLT_ENTRY_SIZE))); + + /* If this symbol is not defined in a regular file, and we + are not generating a shared library, then set the symbol + to this location in the .plt. This is required to make + function pointers compare as equal between the normal + executable and the shared library. */ + if (! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + h->root.u.def.section = s; + h->root.u.def.value = h->plt.offset; + } + + /* Make room for this entry. After the 8192nd entry, room + for two entries is allocated. */ + s->_raw_size += PLT_ENTRY_SIZE; + if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE + > PLT_NUM_SINGLE_ENTRIES) + s->_raw_size += PLT_ENTRY_SIZE; + + /* We also need to make an entry in the .rela.plt section. */ + htab->relplt->_raw_size += sizeof (Elf32_External_Rela); + } + else + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + } + } + else + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + } + + eh = (struct ppc_elf_link_hash_entry *) h; + if (eh->elf.got.refcount > 0) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (eh->elf.dynindx == -1 + && (eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf)) + return FALSE; + } + + if (eh->tls_mask == (TLS_TLS | TLS_LD) + && !(eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) + /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */ + eh->elf.got.offset = (bfd_vma) -1; + else + { + bfd_boolean dyn; + eh->elf.got.offset = htab->got->_raw_size; + if ((eh->tls_mask & TLS_TLS) != 0) + { + if ((eh->tls_mask & TLS_LD) != 0) + htab->got->_raw_size += 8; + if ((eh->tls_mask & TLS_GD) != 0) + htab->got->_raw_size += 8; + if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0) + htab->got->_raw_size += 4; + if ((eh->tls_mask & TLS_DTPREL) != 0) + htab->got->_raw_size += 4; + } + else + htab->got->_raw_size += 4; + dyn = htab->elf.dynamic_sections_created; + if ((info->shared + || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf)) + && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT + || eh->elf.root.type != bfd_link_hash_undefweak)) + { + /* All the entries we allocated need relocs. */ + htab->relgot->_raw_size + += ((htab->got->_raw_size - eh->elf.got.offset) / 4 + * sizeof (Elf32_External_Rela)); + /* Except LD only needs one. */ + if ((eh->tls_mask & TLS_LD) != 0) + htab->relgot->_raw_size -= sizeof (Elf32_External_Rela); + } + } + } + else + eh->elf.got.offset = (bfd_vma) -1; + + if (eh->dyn_relocs == NULL) + return TRUE; + + /* In the shared -Bsymbolic case, discard space allocated for + dynamic pc-relative relocs against symbols which turn out to be + defined in regular objects. For the normal shared case, discard + space for relocs that have become local due to symbol visibility + changes. */ + + if (info->shared) + { + /* Relocs that use pc_count are those that appear on a call insn, + or certain REL relocs (see MUST_BE_DYN_RELOC) that can be + generated via assembly. We want calls to protected symbols to + resolve directly to the function rather than going via the plt. + If people want function pointer comparisons to work as expected + then they should avoid writing weird assembly. */ + if (SYMBOL_CALLS_LOCAL (info, h)) + { + struct ppc_elf_dyn_relocs **pp; + + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) + { + p->count -= p->pc_count; + p->pc_count = 0; + if (p->count == 0) + *pp = p->next; + else + pp = &p->next; + } + } + + /* Also discard relocs on undefined weak syms with non-default + visibility. */ + if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT + && h->root.type == bfd_link_hash_undefweak) + eh->dyn_relocs = NULL; + + /* Make sure undefined weak symbols are output as a dynamic symbol + in PIEs. */ + if (info->pie + && eh->dyn_relocs != NULL + && h->dynindx == -1 + && h->root.type == bfd_link_hash_undefweak + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + } + else if (ELIMINATE_COPY_RELOCS) + { + /* For the non-shared case, discard space for relocs against + symbols which turn out to need copy relocs or are not + dynamic. */ + + if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + /* Make sure this symbol is output as a dynamic symbol. + Undefined weak syms won't yet be marked as dynamic. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + /* If that succeeded, we know we'll be keeping all the + relocs. */ + if (h->dynindx != -1) + goto keep; + } + + eh->dyn_relocs = NULL; + + keep: ; + } + + /* Finally, allocate space. */ + for (p = eh->dyn_relocs; p != NULL; p = p->next) + { + asection *sreloc = elf_section_data (p->sec)->sreloc; + sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); + } + + return TRUE; +} + +/* Find any dynamic relocs that apply to read-only sections. */ + +static bfd_boolean +readonly_dynrelocs (struct elf_link_hash_entry *h, void *info) +{ + struct ppc_elf_dyn_relocs *p; + + if (h->root.type == bfd_link_hash_indirect) + return TRUE; + + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + + for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) + { + asection *s = p->sec->output_section; + + if (s != NULL + && ((s->flags & (SEC_READONLY | SEC_ALLOC)) + == (SEC_READONLY | SEC_ALLOC))) + { + ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; + + /* Not an error, just cut short the traversal. */ + return FALSE; + } + } + return TRUE; +} + /* Set the sizes of the dynamic sections. */ -static boolean -ppc_elf_size_dynamic_sections (output_bfd, info) - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info; +static bfd_boolean +ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) { - bfd *dynobj; + struct ppc_elf_link_hash_table *htab; asection *s; - boolean plt; - boolean relocs; + bfd_boolean relocs; + bfd *ibfd; #ifdef DEBUG fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); #endif - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); + htab = ppc_elf_hash_table (info); + BFD_ASSERT (htab->elf.dynobj != NULL); if (elf_hash_table (info)->dynamic_sections_created) { /* Set the contents of the .interp section to the interpreter. */ - if (! info->shared) + if (info->executable) { - s = bfd_get_section_by_name (dynobj, ".interp"); + s = bfd_get_section_by_name (htab->elf.dynobj, ".interp"); BFD_ASSERT (s != NULL); s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; } } + + if (htab->tlsld_got.refcount > 0) + { + htab->tlsld_got.offset = htab->got->_raw_size; + htab->got->_raw_size += 8; + if (info->shared) + htab->relgot->_raw_size += sizeof (Elf32_External_Rela); + } else + htab->tlsld_got.offset = (bfd_vma) -1; + + /* Set up .got offsets for local syms, and space for local dynamic + relocs. */ + for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) { - /* We may have created entries in the .rela.got, .rela.sdata, and - .rela.sdata2 sections. However, if we are not creating the - dynamic sections, we will not actually use these entries. Reset - the size of .rela.got, et al, which will cause it to get - stripped from the output file below. */ - static char *rela_sections[] = { ".rela.got", ".rela.sdata", - ".rela.sdata2", ".rela.sbss", - (char *) 0 }; - char **p; + bfd_signed_vma *local_got; + bfd_signed_vma *end_local_got; + char *lgot_masks; + bfd_size_type locsymcount; + Elf_Internal_Shdr *symtab_hdr; + asection *srel; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) + continue; - for (p = rela_sections; *p != (char *) 0; p++) + for (s = ibfd->sections; s != NULL; s = s->next) { - s = bfd_get_section_by_name (dynobj, *p); - if (s != NULL) - s->_raw_size = 0; + struct ppc_elf_dyn_relocs *p; + + for (p = ((struct ppc_elf_dyn_relocs *) + elf_section_data (s)->local_dynrel); + p != NULL; + p = p->next) + { + if (!bfd_is_abs_section (p->sec) + && bfd_is_abs_section (p->sec->output_section)) + { + /* Input section has been discarded, either because + it is a copy of a linkonce section or due to + linker script /DISCARD/, so we'll be discarding + the relocs too. */ + } + else if (p->count != 0) + { + elf_section_data (p->sec)->sreloc->_raw_size + += p->count * sizeof (Elf32_External_Rela); + if ((p->sec->output_section->flags + & (SEC_READONLY | SEC_ALLOC)) + == (SEC_READONLY | SEC_ALLOC)) + info->flags |= DF_TEXTREL; + } + } } + + local_got = elf_local_got_refcounts (ibfd); + if (!local_got) + continue; + + symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; + locsymcount = symtab_hdr->sh_info; + end_local_got = local_got + locsymcount; + lgot_masks = (char *) end_local_got; + s = htab->got; + srel = htab->relgot; + for (; local_got < end_local_got; ++local_got, ++lgot_masks) + if (*local_got > 0) + { + if (*lgot_masks == (TLS_TLS | TLS_LD)) + { + /* If just an LD reloc, we'll just use + htab->tlsld_got.offset. */ + if (htab->tlsld_got.offset == (bfd_vma) -1) + { + htab->tlsld_got.offset = s->_raw_size; + s->_raw_size += 8; + if (info->shared) + srel->_raw_size += sizeof (Elf32_External_Rela); + } + *local_got = (bfd_vma) -1; + } + else + { + *local_got = s->_raw_size; + if ((*lgot_masks & TLS_TLS) != 0) + { + if ((*lgot_masks & TLS_GD) != 0) + s->_raw_size += 8; + if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0) + s->_raw_size += 4; + if ((*lgot_masks & TLS_DTPREL) != 0) + s->_raw_size += 4; + } + else + s->_raw_size += 4; + if (info->shared) + srel->_raw_size += ((s->_raw_size - *local_got) / 4 + * sizeof (Elf32_External_Rela)); + } + } + else + *local_got = (bfd_vma) -1; } - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - plt = false; - relocs = false; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - boolean strip; + /* Allocate space for global sym dynamic relocs. */ + elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); + /* We've now determined the sizes of the various dynamic sections. + Allocate memory for them. */ + relocs = FALSE; + for (s = htab->elf.dynobj->sections; s != NULL; s = s->next) + { if ((s->flags & SEC_LINKER_CREATED) == 0) continue; - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - strip = false; - - if (strcmp (name, ".plt") == 0) + if (s == htab->plt + || s == htab->got + || (htab->sdata != NULL && s == htab->sdata->section) + || (htab->sdata2 != NULL && s == htab->sdata2->section)) { - if (s->_raw_size == 0) - { - /* Strip this section if we don't need it; see the - comment below. */ - strip = true; - } - else - { - /* Remember whether there is a PLT. */ - plt = true; - } + /* Strip this section if we don't need it; see the + comment below. */ } - else if (strncmp (name, ".rela", 5) == 0) + else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) { if (s->_raw_size == 0) { @@ -2018,39 +3422,36 @@ ppc_elf_size_dynamic_sections (output_bfd, info) adjust_dynamic_symbol is called, and it is that function which decides whether anything needs to go into these sections. */ - strip = true; } else { /* Remember whether there are any relocation sections. */ - relocs = true; + relocs = TRUE; /* We use the reloc_count field as a counter if we need to copy relocs into the output file. */ s->reloc_count = 0; } } - else if (strcmp (name, ".got") != 0 - && strcmp (name, ".sdata") != 0 - && strcmp (name, ".sdata2") != 0) + else { /* It's not one of our sections, so don't allocate space. */ continue; } - if (strip) + if (s->_raw_size == 0) { _bfd_strip_section_from_output (info, s); continue; } /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; + s->contents = bfd_zalloc (htab->elf.dynobj, s->_raw_size); + if (s->contents == NULL) + return FALSE; } - if (elf_hash_table (info)->dynamic_sections_created) + if (htab->elf.dynamic_sections_created) { /* Add some entries to the .dynamic section. We fill in the values later, in ppc_elf_finish_dynamic_sections, but we @@ -2058,21 +3459,21 @@ ppc_elf_size_dynamic_sections (output_bfd, info) the .dynamic section. The DT_DEBUG entry is filled in by the dynamic linker and used by the debugger. */ #define add_dynamic_entry(TAG, VAL) \ - bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) + _bfd_elf_add_dynamic_entry (info, TAG, VAL) - if (!info->shared) + if (info->executable) { if (!add_dynamic_entry (DT_DEBUG, 0)) - return false; + return FALSE; } - if (plt) + if (htab->plt != NULL && htab->plt->_raw_size != 0) { if (!add_dynamic_entry (DT_PLTGOT, 0) || !add_dynamic_entry (DT_PLTRELSZ, 0) || !add_dynamic_entry (DT_PLTREL, DT_RELA) || !add_dynamic_entry (DT_JMPREL, 0)) - return false; + return FALSE; } if (relocs) @@ -2080,46 +3481,81 @@ ppc_elf_size_dynamic_sections (output_bfd, info) if (!add_dynamic_entry (DT_RELA, 0) || !add_dynamic_entry (DT_RELASZ, 0) || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) - return false; + return FALSE; } + /* If any dynamic relocs apply to a read-only section, then we + need a DT_TEXTREL entry. */ + if ((info->flags & DF_TEXTREL) == 0) + elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs, + info); + if ((info->flags & DF_TEXTREL) != 0) { if (!add_dynamic_entry (DT_TEXTREL, 0)) - return false; - info->flags |= DF_TEXTREL; + return FALSE; } } #undef add_dynamic_entry - return true; + return TRUE; } +static bfd_boolean +update_local_sym_info (bfd *abfd, + Elf_Internal_Shdr *symtab_hdr, + unsigned long r_symndx, + int tls_type) +{ + bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); + char *local_got_tls_masks; + + if (local_got_refcounts == NULL) + { + bfd_size_type size = symtab_hdr->sh_info; + + size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks); + local_got_refcounts = bfd_zalloc (abfd, size); + if (local_got_refcounts == NULL) + return FALSE; + elf_local_got_refcounts (abfd) = local_got_refcounts; + } + + local_got_refcounts[r_symndx] += 1; + local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info); + local_got_tls_masks[r_symndx] |= tls_type; + return TRUE; +} + +static void +bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type) +{ + (*_bfd_error_handler) + (_("%s: relocation %s cannot be used when making a shared object"), + bfd_archive_filename (abfd), + ppc_elf_howto_table[r_type]->name); + bfd_set_error (bfd_error_bad_value); +} + /* Look through the relocs for a section during the first phase, and allocate space in the global offset table or procedure linkage table. */ -static boolean -ppc_elf_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; +static bfd_boolean +ppc_elf_check_relocs (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { - bfd *dynobj; + struct ppc_elf_link_hash_table *htab; Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; + struct elf_link_hash_entry **sym_hashes; const Elf_Internal_Rela *rel; const Elf_Internal_Rela *rel_end; - bfd_signed_vma *local_got_refcounts; - elf_linker_section_t *sdata; - elf_linker_section_t *sdata2; asection *sreloc; - asection *sgot = NULL; - asection *srelgot = NULL; - if (info->relocateable) - return true; + if (info->relocatable) + return TRUE; #ifdef DEBUG fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", @@ -2127,39 +3563,40 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) bfd_archive_filename (abfd)); #endif + /* Initialize howto table if not already done. */ + if (!ppc_elf_howto_table[R_PPC_ADDR32]) + ppc_elf_howto_init (); + /* Create the linker generated sections all the time so that the special symbols are created. */ - - if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL) + htab = ppc_elf_hash_table (info); + if (htab->sdata == NULL) { - sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); - if (!sdata) - return false; + htab->sdata = ppc_elf_create_linker_section (abfd, info, + LINKER_SECTION_SDATA); + if (htab->sdata == NULL) + return FALSE; } - if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL) + if (htab->sdata2 == NULL) { - sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2); - if (!sdata2) - return false; + htab->sdata2 = ppc_elf_create_linker_section (abfd, info, + LINKER_SECTION_SDATA2); + if (htab->sdata2 == NULL) + return FALSE; } - dynobj = elf_hash_table (info)->dynobj; symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - local_got_refcounts = elf_local_got_refcounts (abfd); - sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); - if (!elf_bad_symtab (abfd)) - sym_hashes_end -= symtab_hdr->sh_info; - sreloc = NULL; rel_end = relocs + sec->reloc_count; for (rel = relocs; rel < rel_end; rel++) { unsigned long r_symndx; + enum elf_ppc_reloc_type r_type; struct elf_link_hash_entry *h; + int tls_type = 0; r_symndx = ELF32_R_SYM (rel->r_info); if (r_symndx < symtab_hdr->sh_info) @@ -2172,182 +3609,118 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) startup code. */ if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) { - if (sgot == NULL) + if (htab->got == NULL) { - if (dynobj == NULL) - elf_hash_table (info)->dynobj = dynobj = abfd; - sgot = ppc_elf_create_got (dynobj, info); - if (sgot == NULL) - return false; + if (htab->elf.dynobj == NULL) + htab->elf.dynobj = abfd; + if (!ppc_elf_create_got (htab->elf.dynobj, info)) + return FALSE; } } - switch (ELF32_R_TYPE (rel->r_info)) + r_type = ELF32_R_TYPE (rel->r_info); + switch (r_type) { - /* GOT16 relocations */ + case R_PPC_GOT_TLSLD16: + case R_PPC_GOT_TLSLD16_LO: + case R_PPC_GOT_TLSLD16_HI: + case R_PPC_GOT_TLSLD16_HA: + htab->tlsld_got.refcount += 1; + tls_type = TLS_TLS | TLS_LD; + goto dogottls; + + case R_PPC_GOT_TLSGD16: + case R_PPC_GOT_TLSGD16_LO: + case R_PPC_GOT_TLSGD16_HI: + case R_PPC_GOT_TLSGD16_HA: + tls_type = TLS_TLS | TLS_GD; + goto dogottls; + + case R_PPC_GOT_TPREL16: + case R_PPC_GOT_TPREL16_LO: + case R_PPC_GOT_TPREL16_HI: + case R_PPC_GOT_TPREL16_HA: + if (info->shared) + info->flags |= DF_STATIC_TLS; + tls_type = TLS_TLS | TLS_TPREL; + goto dogottls; + + case R_PPC_GOT_DTPREL16: + case R_PPC_GOT_DTPREL16_LO: + case R_PPC_GOT_DTPREL16_HI: + case R_PPC_GOT_DTPREL16_HA: + tls_type = TLS_TLS | TLS_DTPREL; + dogottls: + sec->has_tls_reloc = 1; + /* Fall thru */ + + /* GOT16 relocations */ case R_PPC_GOT16: case R_PPC_GOT16_LO: case R_PPC_GOT16_HI: case R_PPC_GOT16_HA: /* This symbol requires a global offset table entry. */ - - if (sgot == NULL) - { - if (dynobj == NULL) - elf_hash_table (info)->dynobj = dynobj = abfd; - sgot = ppc_elf_create_got (dynobj, info); - if (sgot == NULL) - return false; - } - - if (srelgot == NULL - && (h != NULL || info->shared)) + if (htab->got == NULL) { - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - if (srelgot == NULL) - { - srelgot = bfd_make_section (dynobj, ".rela.got"); - if (srelgot == NULL - || ! bfd_set_section_flags (dynobj, srelgot, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, srelgot, 2)) - return false; - } + if (htab->elf.dynobj == NULL) + htab->elf.dynobj = abfd; + if (!ppc_elf_create_got (htab->elf.dynobj, info)) + return FALSE; } - if (h != NULL) { - if (h->got.refcount == 0) - { - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - if (!bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - - /* Allocate space in the .got. */ - sgot->_raw_size += 4; - /* Allocate relocation space. */ - srelgot->_raw_size += sizeof (Elf32_External_Rela); - } - h->got.refcount++; + h->got.refcount += 1; + ppc_elf_hash_entry (h)->tls_mask |= tls_type; } else - { - /* This is a global offset table entry for a local symbol. */ - if (local_got_refcounts == NULL) - { - bfd_size_type size; - - size = symtab_hdr->sh_info; - size *= sizeof (bfd_signed_vma); - local_got_refcounts - = (bfd_signed_vma *) bfd_zalloc (abfd, size); - if (local_got_refcounts == NULL) - return false; - elf_local_got_refcounts (abfd) = local_got_refcounts; - } - if (local_got_refcounts[r_symndx] == 0) - { - sgot->_raw_size += 4; - - /* If we are generating a shared object, we need to - output a R_PPC_RELATIVE reloc so that the - dynamic linker can adjust this GOT entry. */ - if (info->shared) - srelgot->_raw_size += sizeof (Elf32_External_Rela); - } - local_got_refcounts[r_symndx]++; - } + /* This is a global offset table entry for a local symbol. */ + if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) + return FALSE; break; - /* Indirect .sdata relocation */ + /* Indirect .sdata relocation. */ case R_PPC_EMB_SDAI16: if (info->shared) { - ((*_bfd_error_handler) - (_("%s: relocation %s cannot be used when making a shared object"), - bfd_archive_filename (abfd), "R_PPC_EMB_SDAI16")); - return false; - } - - if (srelgot == NULL && (h != NULL || info->shared)) - { - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - if (srelgot == NULL) - { - srelgot = bfd_make_section (dynobj, ".rela.got"); - if (srelgot == NULL - || ! bfd_set_section_flags (dynobj, srelgot, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, srelgot, 2)) - return false; - } + bad_shared_reloc (abfd, r_type); + return FALSE; } - - if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel)) - return false; - + if (!elf_create_pointer_linker_section (abfd, info, + htab->sdata, h, rel)) + return FALSE; break; - /* Indirect .sdata2 relocation */ + /* Indirect .sdata2 relocation. */ case R_PPC_EMB_SDA2I16: if (info->shared) { - ((*_bfd_error_handler) - (_("%s: relocation %s cannot be used when making a shared object"), - bfd_archive_filename (abfd), "R_PPC_EMB_SDA2I16")); - return false; - } - - if (srelgot == NULL && (h != NULL || info->shared)) - { - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - if (srelgot == NULL) - { - srelgot = bfd_make_section (dynobj, ".rela.got"); - if (srelgot == NULL - || ! bfd_set_section_flags (dynobj, srelgot, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, srelgot, 2)) - return false; - } + bad_shared_reloc (abfd, r_type); + return FALSE; } - - if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel)) - return false; - + if (!elf_create_pointer_linker_section (abfd, info, + htab->sdata2, h, rel)) + return FALSE; break; case R_PPC_SDAREL16: case R_PPC_EMB_SDA2REL: case R_PPC_EMB_SDA21: + case R_PPC_EMB_RELSDA: + case R_PPC_EMB_NADDR32: + case R_PPC_EMB_NADDR16: + case R_PPC_EMB_NADDR16_LO: + case R_PPC_EMB_NADDR16_HI: + case R_PPC_EMB_NADDR16_HA: if (info->shared) { - ((*_bfd_error_handler) - (_("%s: relocation %s cannot be used when making a shared object"), - bfd_archive_filename (abfd), - ppc_elf_howto_table[(int) ELF32_R_TYPE (rel->r_info)]->name)); - return false; + bad_shared_reloc (abfd, r_type); + return FALSE; } break; case R_PPC_PLT32: case R_PPC_PLTREL24: + case R_PPC_PLTREL32: case R_PPC_PLT16_LO: case R_PPC_PLT16_HI: case R_PPC_PLT16_HA: @@ -2355,25 +3728,25 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) fprintf (stderr, "Reloc requires a PLT entry\n"); #endif /* This symbol requires a procedure linkage table entry. We - actually build the entry in adjust_dynamic_symbol, - because this might be a case of linking PIC code without - linking in any dynamic objects, in which case we don't - need to generate a procedure linkage table after all. */ + actually build the entry in finish_dynamic_symbol, + because this might be a case of linking PIC code without + linking in any dynamic objects, in which case we don't + need to generate a procedure linkage table after all. */ if (h == NULL) { /* It does not make sense to have a procedure linkage - table entry for a local symbol. */ + table entry for a local symbol. */ + (*_bfd_error_handler) (_("%s(%s+0x%lx): %s reloc against " + "local symbol"), + bfd_archive_filename (abfd), + sec->name, + (long) rel->r_offset, + ppc_elf_howto_table[r_type]->name); bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - } h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; h->plt.refcount++; break; @@ -2385,26 +3758,73 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) case R_PPC_SECTOFF_LO: case R_PPC_SECTOFF_HI: case R_PPC_SECTOFF_HA: + case R_PPC_DTPREL16: + case R_PPC_DTPREL16_LO: + case R_PPC_DTPREL16_HI: + case R_PPC_DTPREL16_HA: + case R_PPC_TOC16: + break; + + /* This are just markers. */ + case R_PPC_TLS: + case R_PPC_EMB_MRKREF: + case R_PPC_NONE: + case R_PPC_max: + break; + + /* These should only appear in dynamic objects. */ + case R_PPC_COPY: + case R_PPC_GLOB_DAT: + case R_PPC_JMP_SLOT: + case R_PPC_RELATIVE: break; - /* This refers only to functions defined in the shared library */ + /* These aren't handled yet. We'll report an error later. */ + case R_PPC_ADDR30: + case R_PPC_EMB_RELSEC16: + case R_PPC_EMB_RELST_LO: + case R_PPC_EMB_RELST_HI: + case R_PPC_EMB_RELST_HA: + case R_PPC_EMB_BIT_FLD: + break; + + /* This refers only to functions defined in the shared library. */ case R_PPC_LOCAL24PC: break; /* This relocation describes the C++ object vtable hierarchy. Reconstruct it for later use during GC. */ case R_PPC_GNU_VTINHERIT: - if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) - return false; + if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return FALSE; break; /* This relocation describes which C++ vtable entries are actually used. Record for later use during GC. */ case R_PPC_GNU_VTENTRY: - if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return false; + if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return FALSE; break; + /* We shouldn't really be seeing these. */ + case R_PPC_TPREL32: + if (info->shared) + info->flags |= DF_STATIC_TLS; + goto dodyn; + + /* Nor these. */ + case R_PPC_DTPMOD32: + case R_PPC_DTPREL32: + goto dodyn; + + case R_PPC_TPREL16: + case R_PPC_TPREL16_LO: + case R_PPC_TPREL16_HI: + case R_PPC_TPREL16_HA: + if (info->shared) + info->flags |= DF_STATIC_TLS; + goto dodyn; + /* When creating a shared object, we must copy these relocs into the output file. We create a reloc section in dynobj and make room for the reloc. */ @@ -2414,17 +3834,77 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) case R_PPC_REL14_BRNTAKEN: case R_PPC_REL32: if (h == NULL - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 - || SYMBOL_REFERENCES_LOCAL (info, h)) + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) break; /* fall through */ - default: - if (info->shared) + case R_PPC_ADDR32: + case R_PPC_ADDR24: + case R_PPC_ADDR16: + case R_PPC_ADDR16_LO: + case R_PPC_ADDR16_HI: + case R_PPC_ADDR16_HA: + case R_PPC_ADDR14: + case R_PPC_ADDR14_BRTAKEN: + case R_PPC_ADDR14_BRNTAKEN: + case R_PPC_UADDR32: + case R_PPC_UADDR16: + if (h != NULL && !info->shared) + { + /* We may need a plt entry if the symbol turns out to be + a function defined in a dynamic object. */ + h->plt.refcount++; + + /* We may need a copy reloc too. */ + h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + } + + dodyn: + /* If we are creating a shared library, and this is a reloc + against a global symbol, or a non PC relative reloc + against a local symbol, then we need to copy the reloc + into the shared library. However, if we are linking with + -Bsymbolic, we do not need to copy a reloc against a + global symbol which is defined in an object we are + including in the link (i.e., DEF_REGULAR is set). At + this point we have not seen all the input files, so it is + possible that DEF_REGULAR is not set now but will be set + later (it is never cleared). In case of a weak definition, + DEF_REGULAR may be cleared later by a strong definition in + a shared library. We account for that possibility below by + storing information in the dyn_relocs field of the hash + table entry. A similar situation occurs when creating + shared libraries and symbol visibility changes render the + symbol local. + + If on the other hand, we are creating an executable, we + may need to keep relocations for symbols satisfied by a + dynamic library if we manage to avoid copy relocs for the + symbol. */ + if ((info->shared + && (MUST_BE_DYN_RELOC (r_type) + || (h != NULL + && (! info->symbolic + || h->root.type == bfd_link_hash_defweak + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + || (ELIMINATE_COPY_RELOCS + && !info->shared + && (sec->flags & SEC_ALLOC) != 0 + && h != NULL + && (h->root.type == bfd_link_hash_defweak + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))) { + struct ppc_elf_dyn_relocs *p; + struct ppc_elf_dyn_relocs **head; + #ifdef DEBUG - fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n", - (h && h->root.root.string) ? h->root.root.string : "<unknown>"); + fprintf (stderr, + "ppc_elf_check_relocs needs to " + "create relocation for %s\n", + (h && h->root.root.string + ? h->root.root.string : "<unknown>")); #endif if (sreloc == NULL) { @@ -2435,58 +3915,88 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) elf_elfheader (abfd)->e_shstrndx, elf_section_data (sec)->rel_hdr.sh_name)); if (name == NULL) - return false; + return FALSE; BFD_ASSERT (strncmp (name, ".rela", 5) == 0 && strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0); - sreloc = bfd_get_section_by_name (dynobj, name); + sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); if (sreloc == NULL) { flagword flags; - sreloc = bfd_make_section (dynobj, name); + sreloc = bfd_make_section (htab->elf.dynobj, name); flags = (SEC_HAS_CONTENTS | SEC_READONLY | SEC_IN_MEMORY | SEC_LINKER_CREATED); if ((sec->flags & SEC_ALLOC) != 0) flags |= SEC_ALLOC | SEC_LOAD; if (sreloc == NULL - || ! bfd_set_section_flags (dynobj, sreloc, flags) - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return false; + || ! bfd_set_section_flags (htab->elf.dynobj, + sreloc, flags) + || ! bfd_set_section_alignment (htab->elf.dynobj, + sreloc, 2)) + return FALSE; } - if (sec->flags & SEC_READONLY) - info->flags |= DF_TEXTREL; + elf_section_data (sec)->sreloc = sreloc; } - sreloc->_raw_size += sizeof (Elf32_External_Rela); + /* If this is a global symbol, we count the number of + relocations we need for this symbol. */ + if (h != NULL) + { + head = &ppc_elf_hash_entry (h)->dyn_relocs; + } + else + { + /* Track dynamic relocs needed for local syms too. + We really need local syms available to do this + easily. Oh well. */ + + asection *s; + s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, + sec, r_symndx); + if (s == NULL) + return FALSE; + + head = ((struct ppc_elf_dyn_relocs **) + &elf_section_data (s)->local_dynrel); + } - /* FIXME: We should here do what the m68k and i386 - backends do: if the reloc is pc-relative, record it - in case it turns out that the reloc is unnecessary - because the symbol is forced local by versioning or - we are linking with -Bdynamic. Fortunately this - case is not frequent. */ + p = *head; + if (p == NULL || p->sec != sec) + { + p = bfd_alloc (htab->elf.dynobj, sizeof *p); + if (p == NULL) + return FALSE; + p->next = *head; + *head = p; + p->sec = sec; + p->count = 0; + p->pc_count = 0; + } + + p->count += 1; + if (!MUST_BE_DYN_RELOC (r_type)) + p->pc_count += 1; } break; } } - return true; + return TRUE; } /* Return the section that should be marked against GC for a given relocation. */ static asection * -ppc_elf_gc_mark_hook (sec, info, rel, h, sym) - asection *sec; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - Elf_Internal_Rela *rel; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; +ppc_elf_gc_mark_hook (asection *sec, + struct bfd_link_info *info ATTRIBUTE_UNUSED, + Elf_Internal_Rela *rel, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) { if (h != NULL) { @@ -2517,153 +4027,401 @@ ppc_elf_gc_mark_hook (sec, info, rel, h, sym) return NULL; } -/* Update the got entry reference counts for the section being removed. */ +/* Update the got, plt and dynamic reloc reference counts for the + section being removed. */ -static boolean -ppc_elf_gc_sweep_hook (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - asection *sec; - const Elf_Internal_Rela *relocs; +static bfd_boolean +ppc_elf_gc_sweep_hook (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { + struct ppc_elf_link_hash_table *htab; Elf_Internal_Shdr *symtab_hdr; struct elf_link_hash_entry **sym_hashes; bfd_signed_vma *local_got_refcounts; const Elf_Internal_Rela *rel, *relend; - unsigned long r_symndx; - struct elf_link_hash_entry *h; + elf_section_data (sec)->local_dynrel = NULL; + + htab = ppc_elf_hash_table (info); symtab_hdr = &elf_tdata (abfd)->symtab_hdr; sym_hashes = elf_sym_hashes (abfd); local_got_refcounts = elf_local_got_refcounts (abfd); relend = relocs + sec->reloc_count; for (rel = relocs; rel < relend; rel++) - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_PPC_GOT16: - case R_PPC_GOT16_LO: - case R_PPC_GOT16_HI: - case R_PPC_GOT16_HA: - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - if (h->got.refcount > 0) - h->got.refcount--; - } - else if (local_got_refcounts != NULL) - { - if (local_got_refcounts[r_symndx] > 0) - local_got_refcounts[r_symndx]--; - } - break; - - case R_PPC_PLT32: - case R_PPC_PLTREL24: - case R_PPC_PLT16_LO: - case R_PPC_PLT16_HI: - case R_PPC_PLT16_HA: - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) + { + unsigned long r_symndx; + enum elf_ppc_reloc_type r_type; + struct elf_link_hash_entry *h = NULL; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + struct ppc_elf_dyn_relocs **pp, *p; + struct ppc_elf_link_hash_entry *eh; + + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + eh = (struct ppc_elf_link_hash_entry *) h; + + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) + if (p->sec == sec) + { + /* Everything must go for SEC. */ + *pp = p->next; + break; + } + } + + r_type = ELF32_R_TYPE (rel->r_info); + switch (r_type) + { + case R_PPC_GOT_TLSLD16: + case R_PPC_GOT_TLSLD16_LO: + case R_PPC_GOT_TLSLD16_HI: + case R_PPC_GOT_TLSLD16_HA: + htab->tlsld_got.refcount -= 1; + /* Fall thru */ + + case R_PPC_GOT_TLSGD16: + case R_PPC_GOT_TLSGD16_LO: + case R_PPC_GOT_TLSGD16_HI: + case R_PPC_GOT_TLSGD16_HA: + case R_PPC_GOT_TPREL16: + case R_PPC_GOT_TPREL16_LO: + case R_PPC_GOT_TPREL16_HI: + case R_PPC_GOT_TPREL16_HA: + case R_PPC_GOT_DTPREL16: + case R_PPC_GOT_DTPREL16_LO: + case R_PPC_GOT_DTPREL16_HI: + case R_PPC_GOT_DTPREL16_HA: + case R_PPC_GOT16: + case R_PPC_GOT16_LO: + case R_PPC_GOT16_HI: + case R_PPC_GOT16_HA: + if (h != NULL) + { + if (h->got.refcount > 0) + h->got.refcount--; + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + local_got_refcounts[r_symndx]--; + } + break; + + case R_PPC_REL24: + case R_PPC_REL14: + case R_PPC_REL14_BRTAKEN: + case R_PPC_REL14_BRNTAKEN: + case R_PPC_REL32: + if (h == NULL + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + break; + /* Fall thru */ + + case R_PPC_ADDR32: + case R_PPC_ADDR24: + case R_PPC_ADDR16: + case R_PPC_ADDR16_LO: + case R_PPC_ADDR16_HI: + case R_PPC_ADDR16_HA: + case R_PPC_ADDR14: + case R_PPC_ADDR14_BRTAKEN: + case R_PPC_ADDR14_BRNTAKEN: + case R_PPC_UADDR32: + case R_PPC_UADDR16: + case R_PPC_PLT32: + case R_PPC_PLTREL24: + case R_PPC_PLT16_LO: + case R_PPC_PLT16_HI: + case R_PPC_PLT16_HA: + if (h != NULL) + { + if (h->plt.refcount > 0) + h->plt.refcount--; + } + break; + + default: + break; + } + } + return TRUE; +} + +/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ + +asection * +ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) +{ + struct ppc_elf_link_hash_table *htab; + + htab = ppc_elf_hash_table (info); + htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", + FALSE, FALSE, TRUE); + + return _bfd_elf_tls_setup (obfd, info); +} + +/* Run through all the TLS relocs looking for optimization + opportunities. */ + +bfd_boolean +ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + bfd *ibfd; + asection *sec; + struct ppc_elf_link_hash_table *htab; + + if (info->relocatable || info->shared) + return TRUE; + + htab = ppc_elf_hash_table (info); + for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) + { + Elf_Internal_Sym *locsyms = NULL; + Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; + + for (sec = ibfd->sections; sec != NULL; sec = sec->next) + if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - if (h->plt.refcount > 0) - h->plt.refcount--; - } - break; + Elf_Internal_Rela *relstart, *rel, *relend; + int expecting_tls_get_addr; + + /* Read the relocations. */ + relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, + info->keep_memory); + if (relstart == NULL) + return FALSE; + + expecting_tls_get_addr = 0; + relend = relstart + sec->reloc_count; + for (rel = relstart; rel < relend; rel++) + { + enum elf_ppc_reloc_type r_type; + unsigned long r_symndx; + struct elf_link_hash_entry *h = NULL; + char *tls_mask; + char tls_set, tls_clear; + bfd_boolean is_local; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + struct elf_link_hash_entry **sym_hashes; + + sym_hashes = elf_sym_hashes (ibfd); + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + } + + is_local = FALSE; + if (h == NULL + || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) + is_local = TRUE; + + r_type = ELF32_R_TYPE (rel->r_info); + switch (r_type) + { + case R_PPC_GOT_TLSLD16: + case R_PPC_GOT_TLSLD16_LO: + case R_PPC_GOT_TLSLD16_HI: + case R_PPC_GOT_TLSLD16_HA: + /* These relocs should never be against a symbol + defined in a shared lib. Leave them alone if + that turns out to be the case. */ + expecting_tls_get_addr = 0; + htab->tlsld_got.refcount -= 1; + if (!is_local) + continue; + + /* LD -> LE */ + tls_set = 0; + tls_clear = TLS_LD; + expecting_tls_get_addr = 1; + break; + + case R_PPC_GOT_TLSGD16: + case R_PPC_GOT_TLSGD16_LO: + case R_PPC_GOT_TLSGD16_HI: + case R_PPC_GOT_TLSGD16_HA: + if (is_local) + /* GD -> LE */ + tls_set = 0; + else + /* GD -> IE */ + tls_set = TLS_TLS | TLS_TPRELGD; + tls_clear = TLS_GD; + expecting_tls_get_addr = 1; + break; + + case R_PPC_GOT_TPREL16: + case R_PPC_GOT_TPREL16_LO: + case R_PPC_GOT_TPREL16_HI: + case R_PPC_GOT_TPREL16_HA: + expecting_tls_get_addr = 0; + if (is_local) + { + /* IE -> LE */ + tls_set = 0; + tls_clear = TLS_TPREL; + break; + } + else + continue; + + case R_PPC_REL14: + case R_PPC_REL14_BRTAKEN: + case R_PPC_REL14_BRNTAKEN: + case R_PPC_REL24: + if (expecting_tls_get_addr + && h != NULL + && h == htab->tls_get_addr) + { + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + expecting_tls_get_addr = 0; + continue; + + default: + expecting_tls_get_addr = 0; + continue; + } + + if (h != NULL) + { + if (tls_set == 0) + { + /* We managed to get rid of a got entry. */ + if (h->got.refcount > 0) + h->got.refcount -= 1; + } + tls_mask = &ppc_elf_hash_entry (h)->tls_mask; + } + else + { + Elf_Internal_Sym *sym; + bfd_signed_vma *lgot_refs; + char *lgot_masks; + + if (locsyms == NULL) + { + locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; + if (locsyms == NULL) + locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, + symtab_hdr->sh_info, + 0, NULL, NULL, NULL); + if (locsyms == NULL) + { + if (elf_section_data (sec)->relocs != relstart) + free (relstart); + return FALSE; + } + } + sym = locsyms + r_symndx; + lgot_refs = elf_local_got_refcounts (ibfd); + if (lgot_refs == NULL) + abort (); + if (tls_set == 0) + { + /* We managed to get rid of a got entry. */ + if (lgot_refs[r_symndx] > 0) + lgot_refs[r_symndx] -= 1; + } + lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info); + tls_mask = &lgot_masks[r_symndx]; + } + + *tls_mask |= tls_set; + *tls_mask &= ~tls_clear; + } - default: - break; - } + if (elf_section_data (sec)->relocs != relstart) + free (relstart); + } - return true; + if (locsyms != NULL + && (symtab_hdr->contents != (unsigned char *) locsyms)) + { + if (!info->keep_memory) + free (locsyms); + else + symtab_hdr->contents = (unsigned char *) locsyms; + } + } + return TRUE; } /* Hook called by the linker routine which adds symbols from an object file. We use it to put .comm items in .sbss, and not .bss. */ -static boolean -ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) - bfd *abfd; - struct bfd_link_info *info; - const Elf_Internal_Sym *sym; - const char **namep ATTRIBUTE_UNUSED; - flagword *flagsp ATTRIBUTE_UNUSED; - asection **secp; - bfd_vma *valp; +static bfd_boolean +ppc_elf_add_symbol_hook (bfd *abfd, + struct bfd_link_info *info, + Elf_Internal_Sym *sym, + const char **namep ATTRIBUTE_UNUSED, + flagword *flagsp ATTRIBUTE_UNUSED, + asection **secp, + bfd_vma *valp) { if (sym->st_shndx == SHN_COMMON - && !info->relocateable + && !info->relocatable && sym->st_size <= elf_gp_size (abfd) - && info->hash->creator->flavour == bfd_target_elf_flavour) + && (info->hash->creator == abfd->xvec + || info->hash->creator == abfd->xvec->alternative_target)) { /* Common symbols less than or equal to -G nn bytes are automatically - put into .sdata. */ - elf_linker_section_t *sdata - = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); - - if (!sdata->bss_section) - { - bfd_size_type amt; - - /* We don't go through bfd_make_section, because we don't - want to attach this common section to DYNOBJ. The linker - will move the symbols to the appropriate output section - when it defines common symbols. */ - amt = sizeof (asection); - sdata->bss_section = (asection *) bfd_zalloc (abfd, amt); - if (sdata->bss_section == NULL) - return false; - sdata->bss_section->name = sdata->bss_name; - sdata->bss_section->flags = SEC_IS_COMMON; - sdata->bss_section->output_section = sdata->bss_section; - amt = sizeof (asymbol); - sdata->bss_section->symbol = (asymbol *) bfd_zalloc (abfd, amt); - amt = sizeof (asymbol *); - sdata->bss_section->symbol_ptr_ptr = - (asymbol **) bfd_zalloc (abfd, amt); - if (sdata->bss_section->symbol == NULL - || sdata->bss_section->symbol_ptr_ptr == NULL) - return false; - sdata->bss_section->symbol->name = sdata->bss_name; - sdata->bss_section->symbol->flags = BSF_SECTION_SYM; - sdata->bss_section->symbol->section = sdata->bss_section; - *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol; - } - - *secp = sdata->bss_section; + put into .sbss. */ + struct ppc_elf_link_hash_table *htab; + + htab = ppc_elf_hash_table (info); + if (htab->sbss == NULL) + { + flagword flags = SEC_IS_COMMON; + + htab->sbss = bfd_make_section_anyway (abfd, ".sbss"); + if (htab->sbss == NULL + || ! bfd_set_section_flags (abfd, htab->sbss, flags)) + return FALSE; + } + + *secp = htab->sbss; *valp = sym->st_size; } - return true; + return TRUE; } /* Finish up dynamic symbol handling. We set the contents of various dynamic sections here. */ -static boolean -ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) - bfd *output_bfd; - struct bfd_link_info *info; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; +static bfd_boolean +ppc_elf_finish_dynamic_symbol (bfd *output_bfd, + struct bfd_link_info *info, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) { - bfd *dynobj; + struct ppc_elf_link_hash_table *htab; #ifdef DEBUG fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string); #endif - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); + htab = ppc_elf_hash_table (info); + BFD_ASSERT (htab->elf.dynobj != NULL); if (h->plt.offset != (bfd_vma) -1) { - asection *splt; - asection *srela; Elf_Internal_Rela rela; + bfd_byte *loc; bfd_vma reloc_index; #ifdef DEBUG @@ -2671,20 +4429,17 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) #endif /* This symbol has an entry in the procedure linkage table. Set - it up. */ + it up. */ BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - srela = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (splt != NULL && srela != NULL); + BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL); /* We don't need to fill in the .plt. The ppc dynamic linker will fill it in. */ /* Fill in the entry in the .rela.plt section. */ - rela.r_offset = (splt->output_section->vma - + splt->output_offset + rela.r_offset = (htab->plt->output_section->vma + + htab->plt->output_offset + h->plt.offset); rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT); rela.r_addend = 0; @@ -2692,9 +4447,9 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE; if (reloc_index > PLT_NUM_SINGLE_ENTRIES) reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2; - bfd_elf32_swap_reloca_out (output_bfd, &rela, - ((Elf32_External_Rela *) srela->contents - + reloc_index)); + loc = (htab->relplt->contents + + reloc_index * sizeof (Elf32_External_Rela)); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) { @@ -2711,53 +4466,11 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) } } - if (h->got.offset != (bfd_vma) -1) - { - asection *sgot; - asection *srela; - Elf_Internal_Rela rela; - - /* This symbol has an entry in the global offset table. Set it - up. */ - - sgot = bfd_get_section_by_name (dynobj, ".got"); - srela = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (sgot != NULL && srela != NULL); - - rela.r_offset = (sgot->output_section->vma - + sgot->output_offset - + (h->got.offset &~ (bfd_vma) 1)); - - /* If this is a -Bsymbolic link, and the symbol is defined - locally, we just want to emit a RELATIVE reloc. The entry in - the global offset table will already have been initialized in - the relocate_section function. */ - if (info->shared - && SYMBOL_REFERENCES_LOCAL (info, h)) - { - rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); - rela.r_addend = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - else - { - BFD_ASSERT ((h->got.offset & 1) == 0); - rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT); - rela.r_addend = 0; - } - - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); - bfd_elf32_swap_reloca_out (output_bfd, &rela, - ((Elf32_External_Rela *) srela->contents - + srela->reloc_count)); - ++srela->reloc_count; - } - if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) { asection *s; Elf_Internal_Rela rela; + bfd_byte *loc; /* This symbols needs a copy reloc. Set it up. */ @@ -2767,12 +4480,10 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) BFD_ASSERT (h->dynindx != -1); - if (h->size <= elf_gp_size (dynobj)) - s = bfd_get_section_by_name (h->root.u.def.section->owner, - ".rela.sbss"); + if (h->size <= elf_gp_size (htab->elf.dynobj)) + s = htab->relsbss; else - s = bfd_get_section_by_name (h->root.u.def.section->owner, - ".rela.bss"); + s = htab->relbss; BFD_ASSERT (s != NULL); rela.r_offset = (h->root.u.def.value @@ -2780,10 +4491,8 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) + h->root.u.def.section->output_offset); rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); rela.r_addend = 0; - bfd_elf32_swap_reloca_out (output_bfd, &rela, - ((Elf32_External_Rela *) s->contents - + s->reloc_count)); - ++s->reloc_count; + loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); } #ifdef DEBUG @@ -2796,94 +4505,82 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) sym->st_shndx = SHN_ABS; - return true; + return TRUE; } /* Finish up the dynamic sections. */ -static boolean -ppc_elf_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; +static bfd_boolean +ppc_elf_finish_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) { asection *sdyn; - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *sgot = bfd_get_section_by_name (dynobj, ".got"); + struct ppc_elf_link_hash_table *htab; #ifdef DEBUG fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); #endif - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + htab = ppc_elf_hash_table (info); + sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic"); - if (elf_hash_table (info)->dynamic_sections_created) + if (htab->elf.dynamic_sections_created) { - asection *splt; Elf32_External_Dyn *dyncon, *dynconend; - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); + BFD_ASSERT (htab->plt != NULL && sdyn != NULL); dyncon = (Elf32_External_Dyn *) sdyn->contents; dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); for (; dyncon < dynconend; dyncon++) { Elf_Internal_Dyn dyn; - const char *name; - boolean size; + asection *s; - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn); switch (dyn.d_tag) { - case DT_PLTGOT: name = ".plt"; size = false; break; - case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; - case DT_JMPREL: name = ".rela.plt"; size = false; break; - default: name = NULL; size = false; break; - } + case DT_PLTGOT: + s = htab->plt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; + break; - if (name != NULL) - { - asection *s; + case DT_PLTRELSZ: + dyn.d_un.d_val = htab->relplt->_raw_size; + break; - s = bfd_get_section_by_name (output_bfd, name); - if (s == NULL) - dyn.d_un.d_val = 0; - else - { - if (! size) - dyn.d_un.d_ptr = s->vma; - else - { - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size; - else - dyn.d_un.d_val = s->_raw_size; - } - } - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + case DT_JMPREL: + s = htab->relplt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; + break; + + default: + continue; } + + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); } } /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can easily find the address of the _GLOBAL_OFFSET_TABLE_. */ - if (sgot) + if (htab->got) { - unsigned char *contents = sgot->contents; - bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents); + unsigned char *contents = htab->got->contents; + bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); + bfd_put_32 (output_bfd, 0, contents + 4); else bfd_put_32 (output_bfd, sdyn->output_section->vma + sdyn->output_offset, - contents+4); + contents + 4); - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; + elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; } - return true; + return TRUE; } /* The RELOCATE_SECTION function is called by the ELF backend linker @@ -2895,7 +4592,7 @@ ppc_elf_finish_dynamic_sections (output_bfd, info) This function is responsible for adjust the section contents as necessary, and (if using Rela relocs and generating a - relocateable output file) adjusting the reloc addend as + relocatable output file) adjusting the reloc addend as necessary. This function does not have to worry about setting the reloc @@ -2909,289 +4606,711 @@ ppc_elf_finish_dynamic_sections (output_bfd, info) The global hash table entry for the global symbols can be found via elf_sym_hashes (input_bfd). - When generating relocateable output, this function must handle + When generating relocatable output, this function must handle STB_LOCAL/STT_SECTION symbols specially. The output symbol is going to be the section symbol corresponding to the output section, which means that the addend must be adjusted accordingly. */ -static boolean -ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - Elf_Internal_Rela *relocs; - Elf_Internal_Sym *local_syms; - asection **local_sections; +static bfd_boolean +ppc_elf_relocate_section (bfd *output_bfd, + struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + Elf_Internal_Rela *relocs, + Elf_Internal_Sym *local_syms, + asection **local_sections) { - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - bfd *dynobj = elf_hash_table (info)->dynobj; - elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL; - elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL; - Elf_Internal_Rela *rel = relocs; - Elf_Internal_Rela *relend = relocs + input_section->reloc_count; - asection *sreloc = NULL; - asection *splt; - asection *sgot; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + struct ppc_elf_link_hash_table *htab; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + Elf_Internal_Rela outrel; + bfd_byte *loc; + asection *sreloc = NULL; bfd_vma *local_got_offsets; - boolean ret = true; - long insn; + bfd_boolean ret = TRUE; #ifdef DEBUG - fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n", + fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, " + "%ld relocations%s\n", bfd_archive_filename (input_bfd), bfd_section_name(input_bfd, input_section), (long) input_section->reloc_count, - (info->relocateable) ? " (relocatable)" : ""); + (info->relocatable) ? " (relocatable)" : ""); #endif - if (info->relocateable) - return true; + if (info->relocatable) + return TRUE; + /* Initialize howto table if not already done. */ if (!ppc_elf_howto_table[R_PPC_ADDR32]) - /* Initialize howto table if needed. */ ppc_elf_howto_init (); + htab = ppc_elf_hash_table (info); local_got_offsets = elf_local_got_offsets (input_bfd); - - splt = sgot = NULL; - if (dynobj != NULL) - { - splt = bfd_get_section_by_name (dynobj, ".plt"); - sgot = bfd_get_section_by_name (dynobj, ".got"); - } - + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + rel = relocs; + relend = relocs + input_section->reloc_count; for (; rel < relend; rel++) { - enum elf_ppc_reloc_type r_type = (enum elf_ppc_reloc_type)ELF32_R_TYPE (rel->r_info); - bfd_vma offset = rel->r_offset; - bfd_vma addend = rel->r_addend; - bfd_reloc_status_type r = bfd_reloc_other; - Elf_Internal_Sym *sym = (Elf_Internal_Sym *) 0; - asection *sec = (asection *) 0; - struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) 0; - const char *sym_name = (const char *) 0; + enum elf_ppc_reloc_type r_type; + bfd_vma addend; + bfd_reloc_status_type r; + Elf_Internal_Sym *sym; + asection *sec; + struct elf_link_hash_entry *h; + const char *sym_name; reloc_howto_type *howto; unsigned long r_symndx; bfd_vma relocation; - int will_become_local; - - /* Unknown relocation handling */ - if ((unsigned) r_type >= (unsigned) R_PPC_max - || !ppc_elf_howto_table[(int) r_type]) - { - (*_bfd_error_handler) (_("%s: unknown relocation type %d"), - bfd_archive_filename (input_bfd), - (int) r_type); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - - howto = ppc_elf_howto_table[(int) r_type]; + bfd_vma branch_bit, insn, from; + bfd_boolean unresolved_reloc; + bfd_boolean warned; + unsigned int tls_type, tls_mask, tls_gd; + + r_type = ELF32_R_TYPE (rel->r_info); + sym = NULL; + sec = NULL; + h = NULL; + unresolved_reloc = FALSE; + warned = FALSE; r_symndx = ELF32_R_SYM (rel->r_info); if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; sec = local_sections[r_symndx]; - sym_name = "<local symbol>"; + sym_name = bfd_elf_local_sym_name (input_bfd, sym); - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); - addend = rel->r_addend; - /* Relocs to local symbols are always resolved. */ - will_become_local = 1; + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); } else { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned); + sym_name = h->root.root.string; + } - /* Can this relocation be resolved immediately? */ - will_become_local = SYMBOL_REFERENCES_LOCAL (info, h); + /* TLS optimizations. Replace instruction sequences and relocs + based on information we collected in tls_optimize. We edit + RELOCS so that --emit-relocs will output something sensible + for the final instruction stream. */ + tls_mask = 0; + tls_gd = 0; + if (IS_PPC_TLS_RELOC (r_type)) + { + if (h != NULL) + tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask; + else if (local_got_offsets != NULL) + { + char *lgot_masks; + lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info); + tls_mask = lgot_masks[r_symndx]; + } + } - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) + /* Ensure reloc mapping code below stays sane. */ + if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3) + || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3) + || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3) + || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3) + || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3) + || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3) + || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3) + || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3)) + abort (); + switch (r_type) + { + default: + break; + + case R_PPC_GOT_TPREL16: + case R_PPC_GOT_TPREL16_LO: + if (tls_mask != 0 + && (tls_mask & TLS_TPREL) == 0) { - sec = h->root.u.def.section; - if (((r_type == R_PPC_PLT32 - || r_type == R_PPC_PLTREL24) - && splt != NULL - && h->plt.offset != (bfd_vma) -1) - || (r_type == R_PPC_LOCAL24PC - && sec->output_section == NULL) - || ((r_type == R_PPC_GOT16 - || r_type == R_PPC_GOT16_LO - || r_type == R_PPC_GOT16_HI - || r_type == R_PPC_GOT16_HA) - && elf_hash_table (info)->dynamic_sections_created - && (! info->shared || ! will_become_local)) - || (info->shared - && ! will_become_local - && ((input_section->flags & SEC_ALLOC) != 0 - /* Testing SEC_DEBUGGING here may be wrong. - It's here to avoid a crash when - generating a shared library with DWARF - debugging information. */ - || ((input_section->flags & SEC_DEBUGGING) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) - && (r_type == R_PPC_ADDR32 - || r_type == R_PPC_ADDR24 - || r_type == R_PPC_ADDR16 - || r_type == R_PPC_ADDR16_LO - || r_type == R_PPC_ADDR16_HI - || r_type == R_PPC_ADDR16_HA - || r_type == R_PPC_ADDR14 - || r_type == R_PPC_ADDR14_BRTAKEN - || r_type == R_PPC_ADDR14_BRNTAKEN - || r_type == R_PPC_COPY - || r_type == R_PPC_GLOB_DAT - || r_type == R_PPC_JMP_SLOT - || r_type == R_PPC_UADDR32 - || r_type == R_PPC_UADDR16 - || r_type == R_PPC_SDAREL16 - || r_type == R_PPC_EMB_NADDR32 - || r_type == R_PPC_EMB_NADDR16 - || r_type == R_PPC_EMB_NADDR16_LO - || r_type == R_PPC_EMB_NADDR16_HI - || r_type == R_PPC_EMB_NADDR16_HA - || r_type == R_PPC_EMB_SDAI16 - || r_type == R_PPC_EMB_SDA2I16 - || r_type == R_PPC_EMB_SDA2REL - || r_type == R_PPC_EMB_SDA21 - || r_type == R_PPC_EMB_MRKREF - || r_type == R_PPC_EMB_BIT_FLD - || r_type == R_PPC_EMB_RELSDA - || ((r_type == R_PPC_REL24 - || r_type == R_PPC_REL32 - || r_type == R_PPC_REL14 - || r_type == R_PPC_REL14_BRTAKEN - || r_type == R_PPC_REL14_BRNTAKEN - || r_type == R_PPC_RELATIVE) - && strcmp (h->root.root.string, - "_GLOBAL_OFFSET_TABLE_") != 0)))) - { - /* In these cases, we don't need the relocation - value. We check specially because in some - obscure cases sec->output_section will be NULL. */ - relocation = 0; - } - else if (sec->output_section == NULL) + bfd_vma insn; + insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); + insn &= 31 << 21; + insn |= 0x3c020000; /* addis 0,2,0 */ + bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); + r_type = R_PPC_TPREL16_HA; + rel->r_info = ELF32_R_INFO (r_symndx, r_type); + } + break; + + case R_PPC_TLS: + if (tls_mask != 0 + && (tls_mask & TLS_TPREL) == 0) + { + bfd_vma insn, rtra; + insn = bfd_get_32 (output_bfd, contents + rel->r_offset); + if ((insn & ((31 << 26) | (31 << 11))) + == ((31 << 26) | (2 << 11))) + rtra = insn & ((1 << 26) - (1 << 16)); + else if ((insn & ((31 << 26) | (31 << 16))) + == ((31 << 26) | (2 << 16))) + rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); + else + abort (); + if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) + /* add -> addi. */ + insn = 14 << 26; + else if ((insn & (31 << 1)) == 23 << 1 + && ((insn & (31 << 6)) < 14 << 6 + || ((insn & (31 << 6)) >= 16 << 6 + && (insn & (31 << 6)) < 24 << 6))) + /* load and store indexed -> dform. */ + insn = (32 | ((insn >> 6) & 31)) << 26; + else if ((insn & (31 << 1)) == 21 << 1 + && (insn & (0x1a << 6)) == 0) + /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ + insn = (((58 | ((insn >> 6) & 4)) << 26) + | ((insn >> 6) & 1)); + else if ((insn & (31 << 1)) == 21 << 1 + && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) + /* lwax -> lwa. */ + insn = (58 << 26) | 2; + else + abort (); + insn |= rtra; + bfd_put_32 (output_bfd, insn, contents + rel->r_offset); + r_type = R_PPC_TPREL16_LO; + rel->r_info = ELF32_R_INFO (r_symndx, r_type); + /* Was PPC_TLS which sits on insn boundary, now + PPC_TPREL16_LO which is at insn+2. */ + rel->r_offset += 2; + } + break; + + case R_PPC_GOT_TLSGD16_HI: + case R_PPC_GOT_TLSGD16_HA: + tls_gd = TLS_TPRELGD; + if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) + goto tls_gdld_hi; + break; + + case R_PPC_GOT_TLSLD16_HI: + case R_PPC_GOT_TLSLD16_HA: + if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) + { + tls_gdld_hi: + if ((tls_mask & tls_gd) != 0) + r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) + + R_PPC_GOT_TPREL16); + else { - (*_bfd_error_handler) - (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), - bfd_archive_filename (input_bfd), h->root.root.string, - bfd_get_section_name (input_bfd, input_section)); - relocation = 0; + bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); + rel->r_offset -= 2; + r_type = R_PPC_NONE; } - else - relocation = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); + rel->r_info = ELF32_R_INFO (r_symndx, r_type); } - else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else if (info->shared - && (!info->symbolic || info->allow_shlib_undefined) - && !info->no_undefined - && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - relocation = 0; - else + break; + + case R_PPC_GOT_TLSGD16: + case R_PPC_GOT_TLSGD16_LO: + tls_gd = TLS_TPRELGD; + if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) + goto tls_get_addr_check; + break; + + case R_PPC_GOT_TLSLD16: + case R_PPC_GOT_TLSLD16_LO: + if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) { - if (! (*info->callbacks->undefined_symbol) (info, - h->root.root.string, - input_bfd, - input_section, - rel->r_offset, - (!info->shared - || info->no_undefined - || ELF_ST_VISIBILITY (h->other)))) - return false; - relocation = 0; + tls_get_addr_check: + if (rel + 1 < relend) + { + enum elf_ppc_reloc_type r_type2; + unsigned long r_symndx2; + struct elf_link_hash_entry *h2; + bfd_vma insn1, insn2; + bfd_vma offset; + + /* The next instruction should be a call to + __tls_get_addr. Peek at the reloc to be sure. */ + r_type2 = ELF32_R_TYPE (rel[1].r_info); + r_symndx2 = ELF32_R_SYM (rel[1].r_info); + if (r_symndx2 < symtab_hdr->sh_info + || (r_type2 != R_PPC_REL14 + && r_type2 != R_PPC_REL14_BRTAKEN + && r_type2 != R_PPC_REL14_BRNTAKEN + && r_type2 != R_PPC_REL24 + && r_type2 != R_PPC_PLTREL24)) + break; + + h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; + while (h2->root.type == bfd_link_hash_indirect + || h2->root.type == bfd_link_hash_warning) + h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; + if (h2 == NULL || h2 != htab->tls_get_addr) + break; + + /* OK, it checks out. Replace the call. */ + offset = rel[1].r_offset; + insn1 = bfd_get_32 (output_bfd, + contents + rel->r_offset - 2); + if ((tls_mask & tls_gd) != 0) + { + /* IE */ + insn1 &= (1 << 26) - 1; + insn1 |= 32 << 26; /* lwz */ + insn2 = 0x7c631214; /* add 3,3,2 */ + rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE); + r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3) + + R_PPC_GOT_TPREL16); + rel->r_info = ELF32_R_INFO (r_symndx, r_type); + } + else + { + /* LE */ + insn1 = 0x3c620000; /* addis 3,2,0 */ + insn2 = 0x38630000; /* addi 3,3,0 */ + if (tls_gd == 0) + { + /* Was an LD reloc. */ + r_symndx = 0; + rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; + rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; + } + r_type = R_PPC_TPREL16_HA; + rel->r_info = ELF32_R_INFO (r_symndx, r_type); + rel[1].r_info = ELF32_R_INFO (r_symndx, + R_PPC_TPREL16_LO); + rel[1].r_offset += 2; + } + bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); + bfd_put_32 (output_bfd, insn2, contents + offset); + if (tls_gd == 0) + { + /* We changed the symbol on an LD reloc. Start over + in order to get h, sym, sec etc. right. */ + rel--; + continue; + } + } } + break; } - switch ((int) r_type) + /* Handle other relocations that tweak non-addend part of insn. */ + branch_bit = 0; + switch (r_type) { default: - (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"), - bfd_archive_filename (input_bfd), - (int) r_type, sym_name); + break; + + /* Branch taken prediction relocations. */ + case R_PPC_ADDR14_BRTAKEN: + case R_PPC_REL14_BRTAKEN: + branch_bit = BRANCH_PREDICT_BIT; + /* Fall thru */ + + /* Branch not taken prediction relocations. */ + case R_PPC_ADDR14_BRNTAKEN: + case R_PPC_REL14_BRNTAKEN: + insn = bfd_get_32 (output_bfd, contents + rel->r_offset); + insn &= ~BRANCH_PREDICT_BIT; + insn |= branch_bit; + + from = (rel->r_offset + + input_section->output_offset + + input_section->output_section->vma); + + /* Invert 'y' bit if not the default. */ + if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) + insn ^= BRANCH_PREDICT_BIT; + + bfd_put_32 (output_bfd, insn, contents + rel->r_offset); + break; + } + + addend = rel->r_addend; + tls_type = 0; + howto = NULL; + if (r_type < R_PPC_max) + howto = ppc_elf_howto_table[r_type]; + switch (r_type) + { + default: + (*_bfd_error_handler) + (_("%s: unknown relocation type %d for symbol %s"), + bfd_archive_filename (input_bfd), (int) r_type, sym_name); bfd_set_error (bfd_error_bad_value); - ret = false; + ret = FALSE; continue; - case (int) R_PPC_NONE: + case R_PPC_NONE: + case R_PPC_TLS: + case R_PPC_EMB_MRKREF: + case R_PPC_GNU_VTINHERIT: + case R_PPC_GNU_VTENTRY: continue; + /* GOT16 relocations. Like an ADDR16 using the symbol's + address in the GOT as relocation value instead of the + symbol's value itself. Also, create a GOT entry for the + symbol and put the symbol value there. */ + case R_PPC_GOT_TLSGD16: + case R_PPC_GOT_TLSGD16_LO: + case R_PPC_GOT_TLSGD16_HI: + case R_PPC_GOT_TLSGD16_HA: + tls_type = TLS_TLS | TLS_GD; + goto dogot; + + case R_PPC_GOT_TLSLD16: + case R_PPC_GOT_TLSLD16_LO: + case R_PPC_GOT_TLSLD16_HI: + case R_PPC_GOT_TLSLD16_HA: + tls_type = TLS_TLS | TLS_LD; + goto dogot; + + case R_PPC_GOT_TPREL16: + case R_PPC_GOT_TPREL16_LO: + case R_PPC_GOT_TPREL16_HI: + case R_PPC_GOT_TPREL16_HA: + tls_type = TLS_TLS | TLS_TPREL; + goto dogot; + + case R_PPC_GOT_DTPREL16: + case R_PPC_GOT_DTPREL16_LO: + case R_PPC_GOT_DTPREL16_HI: + case R_PPC_GOT_DTPREL16_HA: + tls_type = TLS_TLS | TLS_DTPREL; + goto dogot; + + case R_PPC_GOT16: + case R_PPC_GOT16_LO: + case R_PPC_GOT16_HI: + case R_PPC_GOT16_HA: + dogot: + { + /* Relocation is to the entry for this symbol in the global + offset table. */ + bfd_vma off; + bfd_vma *offp; + unsigned long indx; + + if (htab->got == NULL) + abort (); + + indx = 0; + if (tls_type == (TLS_TLS | TLS_LD) + && (h == NULL + || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) + offp = &htab->tlsld_got.offset; + else if (h != NULL) + { + bfd_boolean dyn; + dyn = htab->elf.dynamic_sections_created; + if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) + || (info->shared + && SYMBOL_REFERENCES_LOCAL (info, h))) + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. */ + ; + else + { + indx = h->dynindx; + unresolved_reloc = FALSE; + } + offp = &h->got.offset; + } + else + { + if (local_got_offsets == NULL) + abort (); + offp = &local_got_offsets[r_symndx]; + } + + /* The offset must always be a multiple of 4. We use the + least significant bit to record whether we have already + processed this entry. */ + off = *offp; + if ((off & 1) != 0) + off &= ~1; + else + { + unsigned int tls_m = (tls_mask + & (TLS_LD | TLS_GD | TLS_DTPREL + | TLS_TPREL | TLS_TPRELGD)); + + if (offp == &htab->tlsld_got.offset) + tls_m = TLS_LD; + else if (h == NULL + || !(h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC)) + tls_m &= ~TLS_LD; + + /* We might have multiple got entries for this sym. + Initialize them all. */ + do + { + int tls_ty = 0; + + if ((tls_m & TLS_LD) != 0) + { + tls_ty = TLS_TLS | TLS_LD; + tls_m &= ~TLS_LD; + } + else if ((tls_m & TLS_GD) != 0) + { + tls_ty = TLS_TLS | TLS_GD; + tls_m &= ~TLS_GD; + } + else if ((tls_m & TLS_DTPREL) != 0) + { + tls_ty = TLS_TLS | TLS_DTPREL; + tls_m &= ~TLS_DTPREL; + } + else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0) + { + tls_ty = TLS_TLS | TLS_TPREL; + tls_m = 0; + } + + /* Generate relocs for the dynamic linker. */ + if ((info->shared || indx != 0) + && (h == NULL + || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + || h->root.type != bfd_link_hash_undefweak)) + { + outrel.r_offset = (htab->got->output_section->vma + + htab->got->output_offset + + off); + outrel.r_addend = 0; + if (tls_ty & (TLS_LD | TLS_GD)) + { + outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32); + if (tls_ty == (TLS_TLS | TLS_GD)) + { + loc = htab->relgot->contents; + loc += (htab->relgot->reloc_count++ + * sizeof (Elf32_External_Rela)); + bfd_elf32_swap_reloca_out (output_bfd, + &outrel, loc); + outrel.r_offset += 4; + outrel.r_info + = ELF32_R_INFO (indx, R_PPC_DTPREL32); + } + } + else if (tls_ty == (TLS_TLS | TLS_DTPREL)) + outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32); + else if (tls_ty == (TLS_TLS | TLS_TPREL)) + outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32); + else if (indx == 0) + outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE); + else + outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT); + if (indx == 0) + { + outrel.r_addend += relocation; + if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) + outrel.r_addend -= htab->elf.tls_sec->vma; + } + loc = htab->relgot->contents; + loc += (htab->relgot->reloc_count++ + * sizeof (Elf32_External_Rela)); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + + /* Init the .got section contents if we're not + emitting a reloc. */ + else + { + bfd_vma value = relocation; + + if (tls_ty == (TLS_TLS | TLS_LD)) + value = 1; + else if (tls_ty != 0) + { + value -= htab->elf.tls_sec->vma + DTP_OFFSET; + if (tls_ty == (TLS_TLS | TLS_TPREL)) + value += DTP_OFFSET - TP_OFFSET; + + if (tls_ty == (TLS_TLS | TLS_GD)) + { + bfd_put_32 (output_bfd, value, + htab->got->contents + off + 4); + value = 1; + } + } + bfd_put_32 (output_bfd, value, + htab->got->contents + off); + } + + off += 4; + if (tls_ty & (TLS_LD | TLS_GD)) + off += 4; + } + while (tls_m != 0); + + off = *offp; + *offp = off | 1; + } + + if (off >= (bfd_vma) -2) + abort (); + + if ((tls_type & TLS_TLS) != 0) + { + if (tls_type != (TLS_TLS | TLS_LD)) + { + if ((tls_mask & TLS_LD) != 0 + && !(h == NULL + || !(h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC))) + off += 8; + if (tls_type != (TLS_TLS | TLS_GD)) + { + if ((tls_mask & TLS_GD) != 0) + off += 8; + if (tls_type != (TLS_TLS | TLS_DTPREL)) + { + if ((tls_mask & TLS_DTPREL) != 0) + off += 4; + } + } + } + } + + relocation = htab->got->output_offset + off - 4; + + /* Addends on got relocations don't make much sense. + x+off@got is actually x@got+off, and since the got is + generated by a hash table traversal, the value in the + got at entry m+n bears little relation to the entry m. */ + if (addend != 0) + (*_bfd_error_handler) + (_("%s(%s+0x%lx): non-zero addend on %s reloc against `%s'"), + bfd_archive_filename (input_bfd), + bfd_get_section_name (input_bfd, input_section), + (long) rel->r_offset, + howto->name, + sym_name); + } + break; + /* Relocations that need no special processing. */ - case (int) R_PPC_LOCAL24PC: + case R_PPC_LOCAL24PC: /* It makes no sense to point a local relocation at a symbol not in this object. */ - if (h != NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && sec->output_section == NULL) + if (unresolved_reloc) { if (! (*info->callbacks->undefined_symbol) (info, h->root.root.string, input_bfd, input_section, rel->r_offset, - true)) - return false; + TRUE)) + return FALSE; continue; } break; - /* Relocations that may need to be propagated if this is a shared - object. */ - case (int) R_PPC_REL24: - case (int) R_PPC_REL32: - case (int) R_PPC_REL14: + case R_PPC_DTPREL16: + case R_PPC_DTPREL16_LO: + case R_PPC_DTPREL16_HI: + case R_PPC_DTPREL16_HA: + addend -= htab->elf.tls_sec->vma + DTP_OFFSET; + break; + + /* Relocations that may need to be propagated if this is a shared + object. */ + case R_PPC_TPREL16: + case R_PPC_TPREL16_LO: + case R_PPC_TPREL16_HI: + case R_PPC_TPREL16_HA: + addend -= htab->elf.tls_sec->vma + TP_OFFSET; + /* The TPREL16 relocs shouldn't really be used in shared + libs as they will result in DT_TEXTREL being set, but + support them anyway. */ + goto dodyn; + + case R_PPC_TPREL32: + addend -= htab->elf.tls_sec->vma + TP_OFFSET; + goto dodyn; + + case R_PPC_DTPREL32: + addend -= htab->elf.tls_sec->vma + DTP_OFFSET; + goto dodyn; + + case R_PPC_DTPMOD32: + relocation = 1; + addend = 0; + goto dodyn; + + case R_PPC_REL24: + case R_PPC_REL32: + case R_PPC_REL14: + case R_PPC_REL14_BRTAKEN: + case R_PPC_REL14_BRNTAKEN: /* If these relocations are not to a named symbol, they can be handled right here, no need to bother the dynamic linker. */ - if (h == NULL - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 - || SYMBOL_REFERENCES_LOCAL (info, h)) + if (SYMBOL_REFERENCES_LOCAL (info, h) + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) break; - /* fall through */ - - /* Relocations that always need to be propagated if this is a shared - object. */ - case (int) R_PPC_ADDR32: - case (int) R_PPC_ADDR24: - case (int) R_PPC_ADDR16: - case (int) R_PPC_ADDR16_LO: - case (int) R_PPC_ADDR16_HI: - case (int) R_PPC_ADDR16_HA: - case (int) R_PPC_ADDR14: - case (int) R_PPC_UADDR32: - case (int) R_PPC_UADDR16: - if (info->shared && r_symndx != 0) + /* fall through */ + + /* Relocations that always need to be propagated if this is a shared + object. */ + case R_PPC_ADDR32: + case R_PPC_ADDR24: + case R_PPC_ADDR16: + case R_PPC_ADDR16_LO: + case R_PPC_ADDR16_HI: + case R_PPC_ADDR16_HA: + case R_PPC_ADDR14: + case R_PPC_ADDR14_BRTAKEN: + case R_PPC_ADDR14_BRNTAKEN: + case R_PPC_UADDR32: + case R_PPC_UADDR16: + /* r_symndx will be zero only for relocs against symbols + from removed linkonce sections, or sections discarded by + a linker script. */ + dodyn: + if (r_symndx == 0) + break; + /* Fall thru. */ + + if ((info->shared + && (h == NULL + || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + || h->root.type != bfd_link_hash_undefweak) + && (MUST_BE_DYN_RELOC (r_type) + || !SYMBOL_CALLS_LOCAL (info, h))) + || (ELIMINATE_COPY_RELOCS + && !info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && h != NULL + && h->dynindx != -1 + && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) { - Elf_Internal_Rela outrel; int skip; #ifdef DEBUG - fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n", - (h && h->root.root.string) ? h->root.root.string : "<unknown>"); + fprintf (stderr, "ppc_elf_relocate_section needs to " + "create relocation for %s\n", + (h && h->root.root.string + ? h->root.root.string : "<unknown>")); #endif /* When generating a shared object, these relocations - are copied into the output file to be resolved at run - time. */ - + are copied into the output file to be resolved at run + time. */ if (sreloc == NULL) { const char *name; @@ -3201,14 +5320,14 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, elf_elfheader (input_bfd)->e_shstrndx, elf_section_data (input_section)->rel_hdr.sh_name)); if (name == NULL) - return false; + return FALSE; BFD_ASSERT (strncmp (name, ".rela", 5) == 0 && strcmp (bfd_get_section_name (input_bfd, input_section), name + 5) == 0); - sreloc = bfd_get_section_by_name (dynobj, name); + sreloc = bfd_get_section_by_name (htab->elf.dynobj, name); BFD_ASSERT (sreloc != NULL); } @@ -3225,67 +5344,56 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, if (skip) memset (&outrel, 0, sizeof outrel); - /* h->dynindx may be -1 if this symbol was marked to - become local. */ - else if (! will_become_local) + else if (!SYMBOL_REFERENCES_LOCAL (info, h)) { + unresolved_reloc = FALSE; outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); outrel.r_addend = rel->r_addend; } else { + outrel.r_addend = relocation + rel->r_addend; + if (r_type == R_PPC_ADDR32) - { - outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); - outrel.r_addend = relocation + rel->r_addend; - } + outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); else { long indx; - if (h == NULL) - sec = local_sections[r_symndx]; - else - { - BFD_ASSERT (h->root.type == bfd_link_hash_defined - || (h->root.type - == bfd_link_hash_defweak)); - sec = h->root.u.def.section; - } - if (sec != NULL && bfd_is_abs_section (sec)) + if (bfd_is_abs_section (sec)) indx = 0; else if (sec == NULL || sec->owner == NULL) { bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } else { asection *osec; + /* We are turning this relocation into one + against a section symbol. It would be + proper to subtract the symbol's value, + osec->vma, from the emitted reloc addend, + but ld.so expects buggy relocs. */ osec = sec->output_section; indx = elf_section_data (osec)->dynindx; BFD_ASSERT (indx > 0); #ifdef DEBUG if (indx <= 0) - { - printf ("indx=%d section=%s flags=%08x name=%s\n", - indx, osec->name, osec->flags, - h->root.root.string); - } + printf ("indx=%d section=%s flags=%08x name=%s\n", + indx, osec->name, osec->flags, + h->root.root.string); #endif } outrel.r_info = ELF32_R_INFO (indx, r_type); - outrel.r_addend = relocation + rel->r_addend; } } - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (((Elf32_External_Rela *) - sreloc->contents) - + sreloc->reloc_count)); - ++sreloc->reloc_count; + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); if (skip == -1) continue; @@ -3301,252 +5409,175 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; } } - - /* Arithmetic adjust relocations that aren't going into a - shared object. */ - if (r_type == R_PPC_ADDR16_HA - /* It's just possible that this symbol is a weak symbol - that's not actually defined anywhere. In that case, - 'sec' would be NULL, and we should leave the symbol - alone (it will be set to zero elsewhere in the link). */ - && sec != NULL) - { - addend += ((relocation + addend) & 0x8000) << 1; - } break; - /* branch taken prediction relocations */ - case (int) R_PPC_ADDR14_BRTAKEN: - case (int) R_PPC_REL14_BRTAKEN: - insn = bfd_get_32 (output_bfd, contents + offset); - if ((relocation - offset) & 0x8000) - insn &= ~BRANCH_PREDICT_BIT; - else - insn |= BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); - break; - - /* branch not taken predicition relocations */ - case (int) R_PPC_ADDR14_BRNTAKEN: - case (int) R_PPC_REL14_BRNTAKEN: - insn = bfd_get_32 (output_bfd, contents + offset); - if ((relocation - offset) & 0x8000) - insn |= BRANCH_PREDICT_BIT; - else - insn &= ~BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); - break; - - /* GOT16 relocations */ - case (int) R_PPC_GOT16: - case (int) R_PPC_GOT16_LO: - case (int) R_PPC_GOT16_HI: - case (int) R_PPC_GOT16_HA: - /* Relocation is to the entry for this symbol in the global - offset table. */ - BFD_ASSERT (sgot != NULL); - - if (h != NULL) - { - bfd_vma off; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - if (! elf_hash_table (info)->dynamic_sections_created - || (info->shared - && SYMBOL_REFERENCES_LOCAL (info, h))) - { - /* This is actually a static link, or it is a - -Bsymbolic link and the symbol is defined - locally. We must initialize this entry in the - global offset table. Since the offset must - always be a multiple of 4, we use the least - significant bit to record whether we have - initialized it already. - - When doing a dynamic link, we create a .rela.got - relocation entry to initialize the value. This - is done in the finish_dynamic_symbol routine. */ - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_put_32 (output_bfd, relocation, - sgot->contents + off); - h->got.offset |= 1; - } - } - - relocation = sgot->output_offset + off - 4; - } - else - { - bfd_vma off; + case R_PPC_RELAX32PC: + relocation -= (input_section->output_section->vma + + input_section->output_offset + + rel->r_offset - 4); + /* Fall thru */ + case R_PPC_RELAX32: + { + unsigned long t0; + unsigned long t1; - BFD_ASSERT (local_got_offsets != NULL - && local_got_offsets[r_symndx] != (bfd_vma) -1); + t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); + t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); - off = local_got_offsets[r_symndx]; + /* We're clearing the bits for R_PPC_ADDR16_HA + and R_PPC_ADDR16_LO here. */ + t0 &= ~0xffff; + t1 &= ~0xffff; - /* The offset must always be a multiple of 4. We use - the least significant bit to record whether we have - already processed this entry. */ - if ((off & 1) != 0) - off &= ~1; - else - { + /* t0 is HA, t1 is LO */ + relocation += addend; + t0 |= ((relocation + 0x8000) >> 16) & 0xffff; + t1 |= relocation & 0xffff; - if (info->shared) - { - asection *srelgot; - Elf_Internal_Rela outrel; - - /* We need to generate a R_PPC_RELATIVE reloc - for the dynamic linker. */ - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (srelgot != NULL); - - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + off); - outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); - outrel.r_addend = relocation; - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (((Elf32_External_Rela *) - srelgot->contents) - + srelgot->reloc_count)); - ++srelgot->reloc_count; - relocation = 0; - } - - bfd_put_32 (output_bfd, relocation, sgot->contents + off); - local_got_offsets[r_symndx] |= 1; - } - - relocation = sgot->output_offset + off - 4; - } - break; + bfd_put_32 (output_bfd, t0, contents + rel->r_offset); + bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4); + } + continue; - /* Indirect .sdata relocation */ - case (int) R_PPC_EMB_SDAI16: - BFD_ASSERT (sdata != NULL); - relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, - sdata, h, relocation, rel, - R_PPC_RELATIVE); + /* Indirect .sdata relocation. */ + case R_PPC_EMB_SDAI16: + BFD_ASSERT (htab->sdata != NULL); + relocation + = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, + htab->sdata, h, relocation, + rel, R_PPC_RELATIVE); break; - /* Indirect .sdata2 relocation */ - case (int) R_PPC_EMB_SDA2I16: - BFD_ASSERT (sdata2 != NULL); - relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, - sdata2, h, relocation, rel, - R_PPC_RELATIVE); + /* Indirect .sdata2 relocation. */ + case R_PPC_EMB_SDA2I16: + BFD_ASSERT (htab->sdata2 != NULL); + relocation + = elf_finish_pointer_linker_section (output_bfd, input_bfd, info, + htab->sdata2, h, relocation, + rel, R_PPC_RELATIVE); break; - /* Handle the TOC16 reloc. We want to use the offset within the .got - section, not the actual VMA. This is appropriate when generating - an embedded ELF object, for which the .got section acts like the - AIX .toc section. */ - case (int) R_PPC_TOC16: /* phony GOT16 relocations */ - BFD_ASSERT (sec != (asection *) 0); + /* Handle the TOC16 reloc. We want to use the offset within the .got + section, not the actual VMA. This is appropriate when generating + an embedded ELF object, for which the .got section acts like the + AIX .toc section. */ + case R_PPC_TOC16: /* phony GOT16 relocations */ + BFD_ASSERT (sec != NULL); BFD_ASSERT (bfd_is_und_section (sec) || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0) - addend -= sec->output_section->vma + sec->output_offset + 0x8000; + addend -= sec->output_section->vma + sec->output_offset + 0x8000; break; - case (int) R_PPC_PLTREL24: + case R_PPC_PLTREL24: /* Relocation is to the entry for this symbol in the - procedure linkage table. */ + procedure linkage table. */ BFD_ASSERT (h != NULL); if (h->plt.offset == (bfd_vma) -1 - || splt == NULL) + || htab->plt == NULL) { /* We didn't make a PLT entry for this symbol. This - happens when statically linking PIC code, or when - using -Bsymbolic. */ + happens when statically linking PIC code, or when + using -Bsymbolic. */ break; } - relocation = (splt->output_section->vma - + splt->output_offset + unresolved_reloc = FALSE; + relocation = (htab->plt->output_section->vma + + htab->plt->output_offset + h->plt.offset); break; - /* relocate against _SDA_BASE_ */ - case (int) R_PPC_SDAREL16: + /* Relocate against _SDA_BASE_. */ + case R_PPC_SDAREL16: { const char *name; + const struct elf_link_hash_entry *sh; - BFD_ASSERT (sec != (asection *) 0); + BFD_ASSERT (sec != NULL); name = bfd_get_section_name (abfd, sec->output_section); - if (strcmp (name, ".sdata") != 0 - && strcmp (name, ".sbss") != 0) + if (! ((strncmp (name, ".sdata", 6) == 0 + && (name[6] == 0 || name[6] == '.')) + || (strncmp (name, ".sbss", 5) == 0 + && (name[5] == 0 || name[5] == '.')))) { - (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_archive_filename (input_bfd), - sym_name, - ppc_elf_howto_table[(int) r_type]->name, - name); + (*_bfd_error_handler) + (_("%s: the target (%s) of a %s relocation is " + "in the wrong output section (%s)"), + bfd_archive_filename (input_bfd), + sym_name, + howto->name, + name); } - addend -= (sdata->sym_hash->root.u.def.value - + sdata->sym_hash->root.u.def.section->output_section->vma - + sdata->sym_hash->root.u.def.section->output_offset); + sh = htab->sdata->sym_hash; + addend -= (sh->root.u.def.value + + sh->root.u.def.section->output_section->vma + + sh->root.u.def.section->output_offset); } break; - /* relocate against _SDA2_BASE_ */ - case (int) R_PPC_EMB_SDA2REL: + /* Relocate against _SDA2_BASE_. */ + case R_PPC_EMB_SDA2REL: { const char *name; + const struct elf_link_hash_entry *sh; - BFD_ASSERT (sec != (asection *) 0); + BFD_ASSERT (sec != NULL); name = bfd_get_section_name (abfd, sec->output_section); - if (strcmp (name, ".sdata2") != 0 && strcmp (name, ".sbss2") != 0) + if (! (strncmp (name, ".sdata2", 7) == 0 + || strncmp (name, ".sbss2", 6) == 0)) { - (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_archive_filename (input_bfd), - sym_name, - ppc_elf_howto_table[(int) r_type]->name, - name); + (*_bfd_error_handler) + (_("%s: the target (%s) of a %s relocation is " + "in the wrong output section (%s)"), + bfd_archive_filename (input_bfd), + sym_name, + howto->name, + name); bfd_set_error (bfd_error_bad_value); - ret = false; + ret = FALSE; continue; } - addend -= (sdata2->sym_hash->root.u.def.value - + sdata2->sym_hash->root.u.def.section->output_section->vma - + sdata2->sym_hash->root.u.def.section->output_offset); + sh = htab->sdata2->sym_hash; + addend -= (sh->root.u.def.value + + sh->root.u.def.section->output_section->vma + + sh->root.u.def.section->output_offset); } break; - /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */ - case (int) R_PPC_EMB_SDA21: - case (int) R_PPC_EMB_RELSDA: + /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */ + case R_PPC_EMB_SDA21: + case R_PPC_EMB_RELSDA: { const char *name; + const struct elf_link_hash_entry *sh; int reg; - BFD_ASSERT (sec != (asection *) 0); + BFD_ASSERT (sec != NULL); name = bfd_get_section_name (abfd, sec->output_section); - if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0) + if (((strncmp (name, ".sdata", 6) == 0 + && (name[6] == 0 || name[6] == '.')) + || (strncmp (name, ".sbss", 5) == 0 + && (name[5] == 0 || name[5] == '.')))) { reg = 13; - addend -= (sdata->sym_hash->root.u.def.value - + sdata->sym_hash->root.u.def.section->output_section->vma - + sdata->sym_hash->root.u.def.section->output_offset); + sh = htab->sdata->sym_hash; + addend -= (sh->root.u.def.value + + sh->root.u.def.section->output_section->vma + + sh->root.u.def.section->output_offset); } - else if (strcmp (name, ".sdata2") == 0 - || strcmp (name, ".sbss2") == 0) + else if (strncmp (name, ".sdata2", 7) == 0 + || strncmp (name, ".sbss2", 6) == 0) { reg = 2; - addend -= (sdata2->sym_hash->root.u.def.value - + sdata2->sym_hash->root.u.def.section->output_section->vma - + sdata2->sym_hash->root.u.def.section->output_offset); + sh = htab->sdata2->sym_hash; + addend -= (sh->root.u.def.value + + sh->root.u.def.section->output_section->vma + + sh->root.u.def.section->output_offset); } else if (strcmp (name, ".PPC.EMB.sdata0") == 0 @@ -3557,114 +5588,144 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, else { - (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_archive_filename (input_bfd), - sym_name, - ppc_elf_howto_table[(int) r_type]->name, - name); + (*_bfd_error_handler) + (_("%s: the target (%s) of a %s relocation is " + "in the wrong output section (%s)"), + bfd_archive_filename (input_bfd), + sym_name, + howto->name, + name); bfd_set_error (bfd_error_bad_value); - ret = false; + ret = FALSE; continue; } if (r_type == R_PPC_EMB_SDA21) { /* fill in register field */ - insn = bfd_get_32 (output_bfd, contents + offset); + insn = bfd_get_32 (output_bfd, contents + rel->r_offset); insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); - bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); + bfd_put_32 (output_bfd, insn, contents + rel->r_offset); } } break; - /* Relocate against the beginning of the section */ - case (int) R_PPC_SECTOFF: - case (int) R_PPC_SECTOFF_LO: - case (int) R_PPC_SECTOFF_HI: - BFD_ASSERT (sec != (asection *) 0); - addend -= sec->output_section->vma; - break; - - case (int) R_PPC_SECTOFF_HA: - BFD_ASSERT (sec != (asection *) 0); + /* Relocate against the beginning of the section. */ + case R_PPC_SECTOFF: + case R_PPC_SECTOFF_LO: + case R_PPC_SECTOFF_HI: + case R_PPC_SECTOFF_HA: + BFD_ASSERT (sec != NULL); addend -= sec->output_section->vma; - addend += ((relocation + addend) & 0x8000) << 1; - break; - - /* Negative relocations */ - case (int) R_PPC_EMB_NADDR32: - case (int) R_PPC_EMB_NADDR16: - case (int) R_PPC_EMB_NADDR16_LO: - case (int) R_PPC_EMB_NADDR16_HI: - addend -= 2 * relocation; break; - case (int) R_PPC_EMB_NADDR16_HA: + /* Negative relocations. */ + case R_PPC_EMB_NADDR32: + case R_PPC_EMB_NADDR16: + case R_PPC_EMB_NADDR16_LO: + case R_PPC_EMB_NADDR16_HI: + case R_PPC_EMB_NADDR16_HA: addend -= 2 * relocation; - addend += ((relocation + addend) & 0x8000) << 1; break; - /* NOP relocation that prevents garbage collecting linkers from omitting a - reference. */ - case (int) R_PPC_EMB_MRKREF: - continue; - - case (int) R_PPC_COPY: - case (int) R_PPC_GLOB_DAT: - case (int) R_PPC_JMP_SLOT: - case (int) R_PPC_RELATIVE: - case (int) R_PPC_PLT32: - case (int) R_PPC_PLTREL32: - case (int) R_PPC_PLT16_LO: - case (int) R_PPC_PLT16_HI: - case (int) R_PPC_PLT16_HA: - case (int) R_PPC_EMB_RELSEC16: - case (int) R_PPC_EMB_RELST_LO: - case (int) R_PPC_EMB_RELST_HI: - case (int) R_PPC_EMB_RELST_HA: - case (int) R_PPC_EMB_BIT_FLD: - (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."), - bfd_archive_filename (input_bfd), - ppc_elf_howto_table[(int) r_type]->name, - sym_name); + case R_PPC_COPY: + case R_PPC_GLOB_DAT: + case R_PPC_JMP_SLOT: + case R_PPC_RELATIVE: + case R_PPC_PLT32: + case R_PPC_PLTREL32: + case R_PPC_PLT16_LO: + case R_PPC_PLT16_HI: + case R_PPC_PLT16_HA: + case R_PPC_ADDR30: + case R_PPC_EMB_RELSEC16: + case R_PPC_EMB_RELST_LO: + case R_PPC_EMB_RELST_HI: + case R_PPC_EMB_RELST_HA: + case R_PPC_EMB_BIT_FLD: + (*_bfd_error_handler) + (_("%s: relocation %s is not yet supported for symbol %s."), + bfd_archive_filename (input_bfd), + howto->name, + sym_name); bfd_set_error (bfd_error_invalid_operation); - ret = false; + ret = FALSE; continue; + } - case (int) R_PPC_GNU_VTINHERIT: - case (int) R_PPC_GNU_VTENTRY: - /* These are no-ops in the end. */ - continue; + /* Do any further special processing. */ + switch (r_type) + { + default: + break; + + case R_PPC_ADDR16_HA: + case R_PPC_GOT16_HA: + case R_PPC_PLT16_HA: + case R_PPC_SECTOFF_HA: + case R_PPC_TPREL16_HA: + case R_PPC_DTPREL16_HA: + case R_PPC_GOT_TLSGD16_HA: + case R_PPC_GOT_TLSLD16_HA: + case R_PPC_GOT_TPREL16_HA: + case R_PPC_GOT_DTPREL16_HA: + case R_PPC_EMB_NADDR16_HA: + case R_PPC_EMB_RELST_HA: + /* It's just possible that this symbol is a weak symbol + that's not actually defined anywhere. In that case, + 'sec' would be NULL, and we should leave the symbol + alone (it will be set to zero elsewhere in the link). */ + if (sec != NULL) + /* Add 0x10000 if sign bit in 0:15 is set. + Bits 0:15 are not used. */ + addend += 0x8000; + break; } #ifdef DEBUG - fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", + fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, " + "offset = %ld, addend = %ld\n", howto->name, (int) r_type, sym_name, r_symndx, - (long) offset, + (long) rel->r_offset, (long) addend); #endif + if (unresolved_reloc + && !((input_section->flags & SEC_DEBUGGING) != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) + { + (*_bfd_error_handler) + (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"), + bfd_archive_filename (input_bfd), + bfd_get_section_name (input_bfd, input_section), + (long) rel->r_offset, + howto->name, + sym_name); + ret = FALSE; + } + r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, - offset, + rel->r_offset, relocation, addend); - if (r == bfd_reloc_ok) - ; - else if (r == bfd_reloc_overflow) + if (r != bfd_reloc_ok) { - const char *name; - - if (h != NULL) + if (sym_name == NULL) + sym_name = "(null)"; + if (r == bfd_reloc_overflow) { - if (h->root.type == bfd_link_hash_undefweak + if (warned) + continue; + if (h != NULL + && h->root.type == bfd_link_hash_undefweak && howto->pc_relative) { /* Assume this is a call protected by other code that @@ -3676,30 +5737,25 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, continue; } - name = h->root.root.string; + if (! (*info->callbacks->reloc_overflow) (info, + sym_name, + howto->name, + rel->r_addend, + input_bfd, + input_section, + rel->r_offset)) + return FALSE; } else { - name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (name == NULL) - continue; - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); + (*_bfd_error_handler) + (_("%s(%s+0x%lx): %s reloc against `%s': error %d"), + bfd_archive_filename (input_bfd), + bfd_get_section_name (input_bfd, input_section), + (long) rel->r_offset, howto->name, sym_name, (int) r); + ret = FALSE; } - - if (! (*info->callbacks->reloc_overflow) (info, - name, - howto->name, - (bfd_vma) 0, - input_bfd, - input_section, - offset)) - return false; } - else - ret = false; } #ifdef DEBUG @@ -3710,10 +5766,9 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, } static enum elf_reloc_type_class -ppc_elf_reloc_type_class (rela) - const Elf_Internal_Rela *rela; +ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) { - switch ((int) ELF32_R_TYPE (rela->r_info)) + switch (ELF32_R_TYPE (rela->r_info)) { case R_PPC_RELATIVE: return reloc_class_relative; @@ -3728,32 +5783,31 @@ ppc_elf_reloc_type_class (rela) } } -/* Support for core dump NOTE sections */ -static boolean -ppc_elf_grok_prstatus (abfd, note) - bfd *abfd; - Elf_Internal_Note *note; +/* Support for core dump NOTE sections. */ + +static bfd_boolean +ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) { int offset; unsigned int raw_size; switch (note->descsz) { - default: - return false; + default: + return FALSE; - case 268: /* Linux/PPC */ - /* pr_cursig */ - elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); + case 268: /* Linux/PPC. */ + /* pr_cursig */ + elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); - /* pr_pid */ - elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); + /* pr_pid */ + elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); - /* pr_reg */ - offset = 72; - raw_size = 192; + /* pr_reg */ + offset = 72; + raw_size = 192; - break; + break; } /* Make a ".reg/999" section. */ @@ -3761,21 +5815,19 @@ ppc_elf_grok_prstatus (abfd, note) raw_size, note->descpos + offset); } -static boolean -ppc_elf_grok_psinfo (abfd, note) - bfd *abfd; - Elf_Internal_Note *note; +static bfd_boolean +ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) { switch (note->descsz) { - default: - return false; + default: + return FALSE; - case 128: /* Linux/PPC elf_prpsinfo */ - elf_tdata (abfd)->core_program - = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); - elf_tdata (abfd)->core_command - = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); + case 128: /* Linux/PPC elf_prpsinfo. */ + elf_tdata (abfd)->core_program + = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); + elf_tdata (abfd)->core_command + = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); } /* Note that for some reason, a spurious space is tacked @@ -3790,16 +5842,322 @@ ppc_elf_grok_psinfo (abfd, note) command[n - 1] = '\0'; } - return true; + return TRUE; } +/* Very simple linked list structure for recording apuinfo values. */ +typedef struct apuinfo_list +{ + struct apuinfo_list *next; + unsigned long value; +} +apuinfo_list; + +static apuinfo_list *head; + + +static void +apuinfo_list_init (void) +{ + head = NULL; +} + +static void +apuinfo_list_add (unsigned long value) +{ + apuinfo_list *entry = head; + + while (entry != NULL) + { + if (entry->value == value) + return; + entry = entry->next; + } + + entry = bfd_malloc (sizeof (* entry)); + if (entry == NULL) + return; + + entry->value = value; + entry->next = head; + head = entry; +} + +static unsigned +apuinfo_list_length (void) +{ + apuinfo_list *entry; + unsigned long count; + + for (entry = head, count = 0; + entry; + entry = entry->next) + ++ count; + + return count; +} + +static inline unsigned long +apuinfo_list_element (unsigned long number) +{ + apuinfo_list * entry; + + for (entry = head; + entry && number --; + entry = entry->next) + ; + + return entry ? entry->value : 0; +} + +static void +apuinfo_list_finish (void) +{ + apuinfo_list *entry; + + for (entry = head; entry;) + { + apuinfo_list *next = entry->next; + free (entry); + entry = next; + } + + head = NULL; +} + +#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" +#define APUINFO_LABEL "APUinfo" + +/* Scan the input BFDs and create a linked list of + the APUinfo values that will need to be emitted. */ + +static void +ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info) +{ + bfd *ibfd; + asection *asec; + char *buffer; + unsigned num_input_sections; + bfd_size_type output_section_size; + unsigned i; + unsigned num_entries; + unsigned long offset; + unsigned long length; + const char *error_message = NULL; + + if (link_info == NULL) + return; + + /* Scan the input bfds, looking for apuinfo sections. */ + num_input_sections = 0; + output_section_size = 0; + + for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) + { + asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); + if (asec) + { + ++ num_input_sections; + output_section_size += asec->_raw_size; + } + } + + /* We need at least one input sections + in order to make merging worthwhile. */ + if (num_input_sections < 1) + return; + + /* Just make sure that the output section exists as well. */ + asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); + if (asec == NULL) + return; + + /* Allocate a buffer for the contents of the input sections. */ + buffer = bfd_malloc (output_section_size); + if (buffer == NULL) + return; + + offset = 0; + apuinfo_list_init (); + + /* Read in the input sections contents. */ + for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next) + { + unsigned long datum; + char *ptr; + + asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME); + if (asec == NULL) + continue; + + length = asec->_raw_size; + if (length < 24) + { + error_message = _("corrupt or empty %s section in %s"); + goto fail; + } + + if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0 + || (bfd_bread (buffer + offset, length, ibfd) != length)) + { + error_message = _("unable to read in %s section from %s"); + goto fail; + } + + /* Process the contents of the section. */ + ptr = buffer + offset; + error_message = _("corrupt %s section in %s"); + + /* Verify the contents of the header. Note - we have to + extract the values this way in order to allow for a + host whose endian-ness is different from the target. */ + datum = bfd_get_32 (ibfd, ptr); + if (datum != sizeof APUINFO_LABEL) + goto fail; + + datum = bfd_get_32 (ibfd, ptr + 8); + if (datum != 0x2) + goto fail; + + if (strcmp (ptr + 12, APUINFO_LABEL) != 0) + goto fail; + + /* Get the number of bytes used for apuinfo entries. */ + datum = bfd_get_32 (ibfd, ptr + 4); + if (datum + 20 != length) + goto fail; + + /* Make sure that we do not run off the end of the section. */ + if (offset + length > output_section_size) + goto fail; + + /* Scan the apuinfo section, building a list of apuinfo numbers. */ + for (i = 0; i < datum; i += 4) + apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i)); + + /* Update the offset. */ + offset += length; + } + + error_message = NULL; + + /* Compute the size of the output section. */ + num_entries = apuinfo_list_length (); + output_section_size = 20 + num_entries * 4; + + asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); + + if (! bfd_set_section_size (abfd, asec, output_section_size)) + ibfd = abfd, + error_message = _("warning: unable to set size of %s section in %s"); + + fail: + free (buffer); + + if (error_message) + (*_bfd_error_handler) (error_message, APUINFO_SECTION_NAME, + bfd_archive_filename (ibfd)); +} + + +/* Prevent the output section from accumulating the input sections' + contents. We have already stored this in our linked list structure. */ + +static bfd_boolean +ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED, + asection *asec, + bfd_byte *contents ATTRIBUTE_UNUSED) +{ + return (apuinfo_list_length () + && strcmp (asec->name, APUINFO_SECTION_NAME) == 0); +} + + +/* Finally we can generate the output section. */ + +static void +ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) +{ + bfd_byte *buffer; + asection *asec; + unsigned i; + unsigned num_entries; + bfd_size_type length; + + asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME); + if (asec == NULL) + return; + + if (apuinfo_list_length () == 0) + return; + + length = asec->_raw_size; + if (length < 20) + return; + + buffer = bfd_malloc (length); + if (buffer == NULL) + { + (*_bfd_error_handler) + (_("failed to allocate space for new APUinfo section.")); + return; + } + + /* Create the apuinfo header. */ + num_entries = apuinfo_list_length (); + bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer); + bfd_put_32 (abfd, num_entries * 4, buffer + 4); + bfd_put_32 (abfd, 0x2, buffer + 8); + strcpy (buffer + 12, APUINFO_LABEL); + + length = 20; + for (i = 0; i < num_entries; i++) + { + bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length); + length += 4; + } + + if (length != asec->_raw_size) + (*_bfd_error_handler) (_("failed to compute new APUinfo section.")); + + if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length)) + (*_bfd_error_handler) (_("failed to install new APUinfo section.")); + + free (buffer); + + apuinfo_list_finish (); +} + +/* Add extra PPC sections -- Note, for now, make .sbss2 and + .PPC.EMB.sbss0 a normal section, and not a bss section so + that the linker doesn't crater when trying to make more than + 2 sections. */ + +static struct bfd_elf_special_section const ppc_elf_special_sections[]= +{ + { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC }, + { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, + { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, + { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC }, + { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC }, + { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 }, + { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC }, + { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC }, + { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR }, + { NULL, 0, 0, 0, 0 } +}; + #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec #define TARGET_LITTLE_NAME "elf32-powerpcle" #define TARGET_BIG_SYM bfd_elf32_powerpc_vec #define TARGET_BIG_NAME "elf32-powerpc" #define ELF_ARCH bfd_arch_powerpc #define ELF_MACHINE_CODE EM_PPC +#ifdef __QNXTARGET__ +#define ELF_MAXPAGESIZE 0x1000 +#else #define ELF_MAXPAGESIZE 0x10000 +#endif #define elf_info_to_howto ppc_elf_info_to_howto #ifdef EM_CYGNUS_POWERPC @@ -3815,14 +6173,14 @@ ppc_elf_grok_psinfo (abfd, note) #define elf_backend_can_gc_sections 1 #define elf_backend_can_refcount 1 #define elf_backend_got_header_size 12 -#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE #define elf_backend_rela_normal 1 +#define bfd_elf32_mkobject ppc_elf_mkobject #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data -#define bfd_elf32_bfd_relax_section ppc_elf_relax_section +#define bfd_elf32_bfd_relax_section ppc_elf_relax_section #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags -#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link +#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create #define elf_backend_object_p ppc_elf_object_p #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook @@ -3831,6 +6189,7 @@ ppc_elf_grok_psinfo (abfd, note) #define elf_backend_relocate_section ppc_elf_relocate_section #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections #define elf_backend_check_relocs ppc_elf_check_relocs +#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections @@ -3842,5 +6201,9 @@ ppc_elf_grok_psinfo (abfd, note) #define elf_backend_grok_prstatus ppc_elf_grok_prstatus #define elf_backend_grok_psinfo ppc_elf_grok_psinfo #define elf_backend_reloc_type_class ppc_elf_reloc_type_class +#define elf_backend_begin_write_processing ppc_elf_begin_write_processing +#define elf_backend_final_write_processing ppc_elf_final_write_processing +#define elf_backend_write_section ppc_elf_write_section +#define elf_backend_special_sections ppc_elf_special_sections #include "elf32-target.h" |
