diff options
Diffstat (limited to 'x/binutils/bfd/elf32-ppc.c')
| -rw-r--r-- | x/binutils/bfd/elf32-ppc.c | 6209 |
1 files changed, 6209 insertions, 0 deletions
diff --git a/x/binutils/bfd/elf32-ppc.c b/x/binutils/bfd/elf32-ppc.c new file mode 100644 index 0000000..4eb08ad --- /dev/null +++ b/x/binutils/bfd/elf32-ppc.c @@ -0,0 +1,6209 @@ +/* PowerPC-specific support for 32-bit ELF + 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 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. + + 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 + suggestions from the in-progress Embedded PowerPC ABI, and that + information may also not match. */ + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" +#include "elf-bfd.h" +#include "elf/ppc.h" +#include "elf32-ppc.h" + +/* RELA relocations are used here. */ + +static bfd_reloc_status_type ppc_elf_addr16_ha_reloc + (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. */ +#define PLT_ENTRY_SIZE 12 +/* The initial size of the plt reserved for the dynamic linker. */ +#define PLT_INITIAL_ENTRY_SIZE 72 +/* The size of the gap between entries in the PLT. */ +#define PLT_SLOT_SIZE 8 +/* The number of single-slot PLT entries (the rest use two slots). */ +#define PLT_NUM_SINGLE_ENTRIES 8192 + +/* 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[R_PPC_max]; + +static reloc_howto_type ppc_elf_howto_raw[] = { + /* This reloc does nothing. */ + HOWTO (R_PPC_NONE, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_NONE", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + 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. */ + HOWTO (R_PPC_ADDR24, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR24", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0x3fffffc, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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. */ + HOWTO (R_PPC_ADDR16_HA, /* type */ + 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_addr16_ha_reloc, /* special_function */ + "R_PPC_ADDR16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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. */ + HOWTO (R_PPC_ADDR14, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_ADDR14", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + 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 + bits must be zero. */ + HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + 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 + two bits must be zero. */ + HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_REL24", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0x3fffffc, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_REL14", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + 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 + zero. */ + HOWTO (R_PPC_REL14_BRTAKEN, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + 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 + be zero. */ + HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xfffc, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16, but referring to the GOT table entry for the + symbol. */ + HOWTO (R_PPC_GOT16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_GOT16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for + the symbol. */ + HOWTO (R_PPC_GOT16_LO, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for + the symbol. */ + HOWTO (R_PPC_GOT16_HI, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for + the symbol. */ + HOWTO (R_PPC_GOT16_HA, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_REL24, but referring to the procedure linkage table + entry for the symbol. */ + HOWTO (R_PPC_PLTREL24, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_PLTREL24", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0x3fffffc, /* dst_mask */ + 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 + dynamic linker copies the data addressed by the symbol from the + shared library into the object, because the object being + run has to have the data at some particular address. */ + HOWTO (R_PPC_COPY, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_COPY", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR32, but used when setting global offset table + entries. */ + HOWTO (R_PPC_GLOB_DAT, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_JMP_SLOT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + 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 + addend. */ + HOWTO (R_PPC_RELATIVE, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_RELATIVE", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + 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 + _GLOBAL_OFFSET_TABLE_. */ + HOWTO (R_PPC_LOCAL24PC, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_LOCAL24PC", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0x3fffffc, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_UADDR32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_UADDR16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_REL32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* 32-bit relocation to the symbol's procedure linkage table. + FIXME: not supported. */ + HOWTO (R_PPC_PLT32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_PLT32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 32-bit PC relative relocation to the symbol's procedure linkage table. + FIXME: not supported. */ + HOWTO (R_PPC_PLTREL32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_PLTREL32", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for + the symbol. */ + HOWTO (R_PPC_PLT16_LO, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for + the symbol. */ + HOWTO (R_PPC_PLT16_HI, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for + the symbol. */ + HOWTO (R_PPC_PLT16_HA, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with + small data items. */ + HOWTO (R_PPC_SDAREL16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_SDAREL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_SECTOFF", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_SECTOFF_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_SECTOFF_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + ppc_elf_addr16_ha_reloc, /* special_function */ + "R_PPC_SECTOFF_HA", /* name */ + 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 */ + + /* 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. */ + HOWTO (R_PPC_EMB_NADDR32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 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 */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_EMB_NADDR16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 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 */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_EMB_ADDR16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 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 */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_EMB_NADDR16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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, + is negative. */ + HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ + 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_addr16_ha_reloc, /* special_function */ + "R_PPC_EMB_NADDR16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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. */ + HOWTO (R_PPC_EMB_SDAI16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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. */ + HOWTO (R_PPC_EMB_SDA2I16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with + small data items. */ + HOWTO (R_PPC_EMB_SDA2REL, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 + field with the appropriate register (0, 2, or 13). */ + HOWTO (R_PPC_EMB_SDA21, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Relocation not handled: R_PPC_EMB_MRKREF */ + /* Relocation not handled: R_PPC_EMB_RELSEC16 */ + /* Relocation not handled: R_PPC_EMB_RELST_LO */ + /* Relocation not handled: R_PPC_EMB_RELST_HI */ + /* Relocation not handled: R_PPC_EMB_RELST_HA */ + /* Relocation not handled: R_PPC_EMB_BIT_FLD */ + + /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling + in the 16 bit signed offset from the appropriate base, and filling in the + register field with the appropriate register (0, 2, or 13). */ + HOWTO (R_PPC_EMB_RELSDA, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + 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 */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + 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 */ + + 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 */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + NULL, /* special_function */ + "R_PPC_GNU_VTINHERIT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 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 */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + NULL, /* special_function */ + "R_PPC_GNU_VTENTRY", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* 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 */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC_TOC16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ +}; + +/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ + +static void +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++) + { + type = ppc_elf_howto_raw[i].type; + if (type >= (sizeof (ppc_elf_howto_table) + / sizeof (ppc_elf_howto_table[0]))) + abort (); + ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; + } +} + +#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) + +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) +{ + struct one_fixup + { + struct one_fixup *next; + asection *tsec; + bfd_vma toff; + bfd_vma trampoff; + }; + + Elf_Internal_Shdr *symtab_hdr; + bfd_byte *contents = NULL; + Elf_Internal_Sym *isymbuf = NULL; + Elf_Internal_Rela *internal_relocs = NULL; + 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; + + /* 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; + + 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 + { + /* Go get them off disk. */ + contents = bfd_malloc (isec->_raw_size); + if (contents == NULL) + goto error_return; + + 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 + { + /* 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) + { + 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; + } + } + + /* Write out the trampolines. */ + changed = fixups != NULL; + if (fixups != 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 (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) + { + if (! link_info->keep_memory) + free (isymbuf); + else + { + /* Cache the symbols for elf_link_input_bfd. */ + symtab_hdr->contents = (unsigned char *) isymbuf; + } + } + + if (contents != NULL + && elf_section_data (isec)->this_hdr.contents != 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; + } + } + + if (elf_section_data (isec)->relocs != internal_relocs) + { + if (!changed) + free (internal_relocs); + else + elf_section_data (isec)->relocs = internal_relocs; + } + + *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 (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + enum elf_ppc_reloc_type r; + + /* Initialize howto table if not already done. */ + if (!ppc_elf_howto_table[R_PPC_ADDR32]) + ppc_elf_howto_init (); + + switch (code) + { + default: + 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 (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]) + ppc_elf_howto_init (); + + BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); + cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; +} + +/* Handle the R_PPC_ADDR16_HA reloc. */ + +static bfd_reloc_status_type +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; + + if (output_bfd != NULL) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + relocation += reloc_entry->addend; + + reloc_entry->addend += (relocation & 0x8000) << 1; + + 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 bfd_boolean +ppc_elf_object_p (bfd *abfd) +{ + if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64) + { + Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); + + if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32) + { + /* Relies on arch after 64 bit default being 32 bit default. */ + abfd->arch_info = abfd->arch_info->next; + BFD_ASSERT (abfd->arch_info->bits_per_word == 32); + } + } + return TRUE; +} + +/* Function to set whether a module needs the -mrelocatable bit set. */ + +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; +} + +/* Merge backend specific data from an object file to the output + object file when linking. */ + +static bfd_boolean +ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) +{ + flagword old_flags; + flagword new_flags; + bfd_boolean error; + + /* Check if we have the same endianess. */ + if (! _bfd_generic_verify_endian_match (ibfd, obfd)) + return FALSE; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + 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. */ + elf_flags_init (obfd) = TRUE; + elf_elfheader (obfd)->e_flags = new_flags; + } + + /* Compatible flags are ok. */ + else if (new_flags == old_flags) + ; + + /* Incompatible flags. */ + else + { + /* 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; + (*_bfd_error_handler) + (_("%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; + (*_bfd_error_handler) + (_("%s: compiled normally and linked with " + "modules compiled with -mrelocatable"), + bfd_archive_filename (ibfd)); + } + + /* The output is -mrelocatable-lib iff both the input files are. */ + if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) + 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. */ + 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. */ + 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); + + /* Warn about any other mismatches. */ + if (new_flags != old_flags) + { + error = TRUE; + (*_bfd_error_handler) + (_("%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 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 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; + + newsect = hdr->bfd_section; + flags = bfd_get_section_flags (abfd, newsect); + if (hdr->sh_flags & SHF_EXCLUDE) + flags |= SEC_EXCLUDE; + + if (hdr->sh_type == SHT_ORDERED) + flags |= SEC_SORT_ENTRIES; + + bfd_set_section_flags (abfd, newsect, flags); + return TRUE; +} + +/* Set up any other section flags and such that may be necessary. */ + +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; + + if ((asect->flags & SEC_SORT_ENTRIES) != 0) + shdr->sh_type = SHT_ORDERED; + + 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 (bfd *abfd, + struct bfd_link_info *info, + enum elf_linker_section_enum which) +{ + 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 that needs the special sections. */ + if (!htab->elf.dynobj) + htab->elf.dynobj = abfd; + + 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) + { + 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; + + if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2 + && !bfd_set_section_alignment (htab->elf.dynobj, s, 2)) + return NULL; + + s->_raw_size = align_power (s->_raw_size, 2); + +#ifdef DEBUG + fprintf (stderr, "Creating section %s, current size = %ld\n", + name, (long) s->_raw_size); +#endif + + if (sym_name) + { + struct elf_link_hash_entry *h; + struct bfd_link_hash_entry *bh; + +#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); + + 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; + + 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; +} + +/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we + need to bump up the number of section headers. */ + +static int +ppc_elf_additional_program_headers (bfd *abfd) +{ + asection *s; + int ret; + + ret = 0; + + s = bfd_get_section_by_name (abfd, ".interp"); + if (s != NULL) + ++ret; + + s = bfd_get_section_by_name (abfd, ".sbss2"); + if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) + ++ret; + + s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); + if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) + ++ret; + + return ret; +} + +/* Modify the segment map if needed. */ + +static bfd_boolean +ppc_elf_modify_segment_map (bfd *abfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info ATTRIBUTE_UNUSED) +{ + return TRUE; +} + +/* The powerpc .got has a blrl instruction in it. Mark it executable. */ + +static bfd_boolean +ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info) +{ + struct ppc_elf_link_hash_table *htab; + asection *s; + flagword flags; + + if (!_bfd_elf_create_got_section (abfd, info)) + return FALSE; + + 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 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 bfd_boolean +ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) +{ + struct ppc_elf_link_hash_table *htab; + asection *s; + flagword flags; + + 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; + + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED); + + 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; + + if (! info->shared) + { + 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; + } + + htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt"); + htab->plt = s = bfd_get_section_by_name (abfd, ".plt"); + if (s == NULL) + abort (); + + flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED; + return bfd_set_section_flags (abfd, s, flags); +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static bfd_boolean +ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) +{ + struct ppc_elf_link_hash_table *htab; + asection *s; + unsigned int power_of_two; + +#ifdef DEBUG + 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. */ + 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 + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_REF_REGULAR) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))); + + /* Deal with function syms. */ + if (h->type == STT_FUNC + || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 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. In this case, + ppc_elf_adjust_dynamic_symbol won't even be called. + + 2. GC has rendered the entry unused. + + 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; + } + else + h->plt.offset = (bfd_vma) -1; + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->weakdef != NULL) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || 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; + 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 + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + 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 + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. + + Of course, if the symbol is sufficiently small, we must instead + 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 (htab->elf.dynobj)) + s = htab->dynsbss; + else + s = htab->dynbss; + BFD_ASSERT (s != NULL); + + /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rela.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + if (h->size <= elf_gp_size (htab->elf.dynobj)) + srel = htab->relsbss; + else + srel = htab->relbss; + BFD_ASSERT (srel != NULL); + srel->_raw_size += sizeof (Elf32_External_Rela); + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + } + + /* We need to figure out the alignment required for this symbol. I + have no idea how ELF linkers handle this. */ + power_of_two = bfd_log2 (h->size); + if (power_of_two > 4) + power_of_two = 4; + + /* 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 (htab->elf.dynobj, s)) + { + 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. */ + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + + /* Increment the section size to make room for the symbol. */ + s->_raw_size += h->size; + + 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 bfd_boolean +ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + struct ppc_elf_link_hash_table *htab; + asection *s; + bfd_boolean relocs; + bfd *ibfd; + +#ifdef DEBUG + fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); +#endif + + 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->executable) + { + 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) + { + 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 (s = ibfd->sections; s != NULL; s = s->next) + { + 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; + } + + /* 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; + + if (s == htab->plt + || s == htab->got + || (htab->sdata != NULL && s == htab->sdata->section) + || (htab->sdata2 != NULL && s == htab->sdata2->section)) + { + /* Strip this section if we don't need it; see the + comment below. */ + } + else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) + { + if (s->_raw_size == 0) + { + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + } + else + { + /* Remember whether there are any relocation sections. */ + 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 + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (s->_raw_size == 0) + { + _bfd_strip_section_from_output (info, s); + continue; + } + + /* Allocate memory for the section contents. */ + s->contents = bfd_zalloc (htab->elf.dynobj, s->_raw_size); + if (s->contents == NULL) + return FALSE; + } + + 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 + must add the entries now so that we get the correct size for + 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_elf_add_dynamic_entry (info, TAG, VAL) + + if (info->executable) + { + if (!add_dynamic_entry (DT_DEBUG, 0)) + return FALSE; + } + + 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; + } + + if (relocs) + { + if (!add_dynamic_entry (DT_RELA, 0) + || !add_dynamic_entry (DT_RELASZ, 0) + || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) + 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; + } + } +#undef add_dynamic_entry + + 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 bfd_boolean +ppc_elf_check_relocs (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; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sreloc; + + if (info->relocatable) + return TRUE; + +#ifdef DEBUG + fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", + bfd_get_section_name (abfd, sec), + 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. */ + htab = ppc_elf_hash_table (info); + if (htab->sdata == NULL) + { + htab->sdata = ppc_elf_create_linker_section (abfd, info, + LINKER_SECTION_SDATA); + if (htab->sdata == NULL) + return FALSE; + } + + if (htab->sdata2 == NULL) + { + htab->sdata2 = ppc_elf_create_linker_section (abfd, info, + LINKER_SECTION_SDATA2); + if (htab->sdata2 == NULL) + return FALSE; + } + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + 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) + h = NULL; + else + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + + /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got. + This shows up in particular in an R_PPC_ADDR32 in the eabi + startup code. */ + if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + { + if (htab->got == NULL) + { + if (htab->elf.dynobj == NULL) + htab->elf.dynobj = abfd; + if (!ppc_elf_create_got (htab->elf.dynobj, info)) + return FALSE; + } + } + + 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; + 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 (htab->got == NULL) + { + if (htab->elf.dynobj == NULL) + htab->elf.dynobj = abfd; + if (!ppc_elf_create_got (htab->elf.dynobj, info)) + return FALSE; + } + if (h != NULL) + { + 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 (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type)) + return FALSE; + break; + + /* Indirect .sdata relocation. */ + case R_PPC_EMB_SDAI16: + if (info->shared) + { + bad_shared_reloc (abfd, r_type); + return FALSE; + } + if (!elf_create_pointer_linker_section (abfd, info, + htab->sdata, h, rel)) + return FALSE; + break; + + /* Indirect .sdata2 relocation. */ + case R_PPC_EMB_SDA2I16: + if (info->shared) + { + bad_shared_reloc (abfd, r_type); + 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) + { + 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: +#ifdef DEBUG + fprintf (stderr, "Reloc requires a PLT entry\n"); +#endif + /* This symbol requires a procedure linkage table entry. We + 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. */ + (*_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; + } + + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + h->plt.refcount++; + break; + + /* The following relocations don't need to propagate the + relocation if linking a shared object since they are + section relative. */ + case R_PPC_SECTOFF: + 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; + + /* 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_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_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. */ + 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 through */ + + 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 needs to " + "create relocation for %s\n", + (h && h->root.root.string + ? h->root.root.string : "<unknown>")); +#endif + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name)); + if (name == NULL) + 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 (htab->elf.dynobj, name); + if (sreloc == NULL) + { + flagword flags; + + 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 (htab->elf.dynobj, + sreloc, flags) + || ! bfd_set_section_alignment (htab->elf.dynobj, + sreloc, 2)) + return FALSE; + } + elf_section_data (sec)->sreloc = sreloc; + } + + /* 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); + } + + 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 the section that should be marked against GC for a given + relocation. */ + +static asection * +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) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_PPC_GNU_VTINHERIT: + case R_PPC_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } + } + } + else + return bfd_section_from_elf_index (sec->owner, sym->st_shndx); + + return NULL; +} + +/* Update the got, plt and dynamic reloc reference counts for the + section being removed. */ + +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; + + 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++) + { + 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)) + { + 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; + } + + if (elf_section_data (sec)->relocs != relstart) + free (relstart); + } + + 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 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->relocatable + && sym->st_size <= elf_gp_size (abfd) + && (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 .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; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +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) +{ + struct ppc_elf_link_hash_table *htab; + +#ifdef DEBUG + fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", + h->root.root.string); +#endif + + htab = ppc_elf_hash_table (info); + BFD_ASSERT (htab->elf.dynobj != NULL); + + if (h->plt.offset != (bfd_vma) -1) + { + Elf_Internal_Rela rela; + bfd_byte *loc; + bfd_vma reloc_index; + +#ifdef DEBUG + fprintf (stderr, ", plt_offset = %d", h->plt.offset); +#endif + + /* This symbol has an entry in the procedure linkage table. Set + it up. */ + + BFD_ASSERT (h->dynindx != -1); + 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 = (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; + + 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; + 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) + { + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + /* If the symbol is weak, we do need to clear the value. + Otherwise, the PLT entry would provide a definition for + the symbol even if the symbol wasn't defined anywhere, + and so the symbol would never be NULL. */ + if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) + == 0) + sym->st_value = 0; + } + } + + 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. */ + +#ifdef DEBUG + fprintf (stderr, ", copy"); +#endif + + BFD_ASSERT (h->dynindx != -1); + + if (h->size <= elf_gp_size (htab->elf.dynobj)) + s = htab->relsbss; + else + s = htab->relbss; + BFD_ASSERT (s != NULL); + + rela.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); + rela.r_addend = 0; + loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); + } + +#ifdef DEBUG + fprintf (stderr, "\n"); +#endif + + /* Mark some specially defined symbols as absolute. */ + if (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + + return TRUE; +} + +/* Finish up the dynamic sections. */ + +static bfd_boolean +ppc_elf_finish_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) +{ + asection *sdyn; + struct ppc_elf_link_hash_table *htab; + +#ifdef DEBUG + fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); +#endif + + htab = ppc_elf_hash_table (info); + sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic"); + + if (htab->elf.dynamic_sections_created) + { + Elf32_External_Dyn *dyncon, *dynconend; + + 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; + asection *s; + + bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + case DT_PLTGOT: + s = htab->plt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; + break; + + case DT_PLTRELSZ: + dyn.d_un.d_val = htab->relplt->_raw_size; + break; + + 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 (htab->got) + { + unsigned char *contents = htab->got->contents; + bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); + + if (sdyn == NULL) + bfd_put_32 (output_bfd, 0, contents + 4); + else + bfd_put_32 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + contents + 4); + + elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4; + } + + return TRUE; +} + +/* The RELOCATE_SECTION function is called by the ELF backend linker + to handle the relocations for a section. + + The relocs are always passed as Rela structures; if the section + actually uses Rel structures, the r_addend field will always be + zero. + + This function is responsible for adjust the section contents as + necessary, and (if using Rela relocs and generating a + relocatable output file) adjusting the reloc addend as + necessary. + + This function does not have to worry about setting the reloc + address or the reloc symbol index. + + LOCAL_SYMS is a pointer to the swapped in local symbols. + + LOCAL_SECTIONS is an array giving the section in the input file + corresponding to the st_shndx field of each local symbol. + + The global hash table entry for the global symbols can be found + via elf_sym_hashes (input_bfd). + + 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 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; + 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; + bfd_boolean ret = TRUE; + +#ifdef DEBUG + 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->relocatable) ? " (relocatable)" : ""); +#endif + + if (info->relocatable) + return TRUE; + + /* Initialize howto table if not already done. */ + if (!ppc_elf_howto_table[R_PPC_ADDR32]) + ppc_elf_howto_init (); + + htab = ppc_elf_hash_table (info); + local_got_offsets = elf_local_got_offsets (input_bfd); + 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; + 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; + 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 = bfd_elf_local_sym_name (input_bfd, sym); + + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); + } + else + { + 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; + } + + /* 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]; + } + } + + /* 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) + { + 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_put_32 (output_bfd, NOP, contents + rel->r_offset); + rel->r_offset -= 2; + r_type = R_PPC_NONE; + } + rel->r_info = ELF32_R_INFO (r_symndx, r_type); + } + 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) + { + 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; + } + + /* Handle other relocations that tweak non-addend part of insn. */ + branch_bit = 0; + switch (r_type) + { + default: + 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; + continue; + + 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 R_PPC_LOCAL24PC: + /* It makes no sense to point a local relocation + at a symbol not in this object. */ + if (unresolved_reloc) + { + if (! (*info->callbacks->undefined_symbol) (info, + h->root.root.string, + input_bfd, + input_section, + rel->r_offset, + TRUE)) + return FALSE; + continue; + } + break; + + 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 (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 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)) + { + int skip; + +#ifdef DEBUG + 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. */ + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (input_bfd, + elf_elfheader (input_bfd)->e_shstrndx, + elf_section_data (input_section)->rel_hdr.sh_name)); + if (name == NULL) + 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 (htab->elf.dynobj, name); + BFD_ASSERT (sreloc != NULL); + } + + skip = 0; + + outrel.r_offset = + _bfd_elf_section_offset (output_bfd, info, input_section, + rel->r_offset); + if (outrel.r_offset == (bfd_vma) -1 + || outrel.r_offset == (bfd_vma) -2) + skip = (int) outrel.r_offset; + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + if (skip) + memset (&outrel, 0, sizeof outrel); + 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); + else + { + long indx; + + if (bfd_is_abs_section (sec)) + indx = 0; + else if (sec == NULL || sec->owner == NULL) + { + bfd_set_error (bfd_error_bad_value); + 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); +#endif + } + + outrel.r_info = ELF32_R_INFO (indx, r_type); + } + } + + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + + if (skip == -1) + continue; + + /* This reloc will be computed at runtime. We clear the memory + so that it contains predictable value. */ + if (! skip + && ((input_section->flags & SEC_ALLOC) != 0 + || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)) + { + relocation = howto->pc_relative ? outrel.r_offset : 0; + addend = 0; + break; + } + } + break; + + 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; + + t0 = bfd_get_32 (output_bfd, contents + rel->r_offset); + t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4); + + /* We're clearing the bits for R_PPC_ADDR16_HA + and R_PPC_ADDR16_LO here. */ + t0 &= ~0xffff; + t1 &= ~0xffff; + + /* t0 is HA, t1 is LO */ + relocation += addend; + t0 |= ((relocation + 0x8000) >> 16) & 0xffff; + t1 |= relocation & 0xffff; + + 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 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 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 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; + break; + + case R_PPC_PLTREL24: + /* Relocation is to the entry for this symbol in the + procedure linkage table. */ + BFD_ASSERT (h != NULL); + + if (h->plt.offset == (bfd_vma) -1 + || htab->plt == NULL) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + break; + } + + unresolved_reloc = FALSE; + relocation = (htab->plt->output_section->vma + + htab->plt->output_offset + + h->plt.offset); + break; + + /* Relocate against _SDA_BASE_. */ + case R_PPC_SDAREL16: + { + const char *name; + const struct elf_link_hash_entry *sh; + + BFD_ASSERT (sec != NULL); + name = bfd_get_section_name (abfd, sec->output_section); + 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, + howto->name, + name); + } + 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 R_PPC_EMB_SDA2REL: + { + const char *name; + const struct elf_link_hash_entry *sh; + + BFD_ASSERT (sec != NULL); + name = bfd_get_section_name (abfd, sec->output_section); + 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, + howto->name, + name); + + bfd_set_error (bfd_error_bad_value); + ret = FALSE; + continue; + } + 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 R_PPC_EMB_SDA21: + case R_PPC_EMB_RELSDA: + { + const char *name; + const struct elf_link_hash_entry *sh; + int reg; + + BFD_ASSERT (sec != NULL); + name = bfd_get_section_name (abfd, sec->output_section); + if (((strncmp (name, ".sdata", 6) == 0 + && (name[6] == 0 || name[6] == '.')) + || (strncmp (name, ".sbss", 5) == 0 + && (name[5] == 0 || name[5] == '.')))) + { + reg = 13; + 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 (strncmp (name, ".sdata2", 7) == 0 + || strncmp (name, ".sbss2", 6) == 0) + { + reg = 2; + 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 + || strcmp (name, ".PPC.EMB.sbss0") == 0) + { + reg = 0; + } + + 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, + howto->name, + name); + + bfd_set_error (bfd_error_bad_value); + ret = FALSE; + continue; + } + + if (r_type == R_PPC_EMB_SDA21) + { /* fill in register field */ + insn = bfd_get_32 (output_bfd, contents + rel->r_offset); + insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); + bfd_put_32 (output_bfd, insn, contents + rel->r_offset); + } + } + break; + + /* 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; + break; + + /* 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; + break; + + 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; + 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", + howto->name, + (int) r_type, + sym_name, + r_symndx, + (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, + rel->r_offset, + relocation, + addend); + + if (r != bfd_reloc_ok) + { + if (sym_name == NULL) + sym_name = "(null)"; + if (r == bfd_reloc_overflow) + { + 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 + detect the symbol is undefined. If this is the case, + we can safely ignore the overflow. If not, the + program is hosed anyway, and a little warning isn't + going to help. */ + + continue; + } + + if (! (*info->callbacks->reloc_overflow) (info, + sym_name, + howto->name, + rel->r_addend, + input_bfd, + input_section, + rel->r_offset)) + return FALSE; + } + else + { + (*_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; + } + } + } + +#ifdef DEBUG + fprintf (stderr, "\n"); +#endif + + return ret; +} + +static enum elf_reloc_type_class +ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela) +{ + switch (ELF32_R_TYPE (rela->r_info)) + { + case R_PPC_RELATIVE: + return reloc_class_relative; + case R_PPC_REL24: + case R_PPC_ADDR24: + case R_PPC_JMP_SLOT: + return reloc_class_plt; + case R_PPC_COPY: + return reloc_class_copy; + default: + return reloc_class_normal; + } +} + +/* 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; + + 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_reg */ + offset = 72; + raw_size = 192; + + break; + } + + /* Make a ".reg/999" section. */ + return _bfd_elfcore_make_pseudosection (abfd, ".reg", + raw_size, note->descpos + offset); +} + +static bfd_boolean +ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) +{ + switch (note->descsz) + { + 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); + } + + /* Note that for some reason, a spurious space is tacked + onto the end of the args in some (at least one anyway) + implementations, so strip it off if it exists. */ + + { + char *command = elf_tdata (abfd)->core_command; + int n = strlen (command); + + if (0 < n && command[n - 1] == ' ') + command[n - 1] = '\0'; + } + + 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 +#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC +#endif + +#ifdef EM_PPC_OLD +#define ELF_MACHINE_ALT2 EM_PPC_OLD +#endif + +#define elf_backend_plt_not_loaded 1 +#define elf_backend_got_symbol_offset 4 +#define elf_backend_can_gc_sections 1 +#define elf_backend_can_refcount 1 +#define elf_backend_got_header_size 12 +#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_reloc_type_lookup ppc_elf_reloc_type_lookup +#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags +#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 +#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook +#define elf_backend_section_from_shdr ppc_elf_section_from_shdr +#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 +#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections +#define elf_backend_fake_sections ppc_elf_fake_sections +#define elf_backend_additional_program_headers ppc_elf_additional_program_headers +#define elf_backend_modify_segment_map ppc_elf_modify_segment_map +#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" |
