diff options
Diffstat (limited to 'contrib/binutils/bfd/elf32-ppc.c')
-rw-r--r-- | contrib/binutils/bfd/elf32-ppc.c | 6209 |
1 files changed, 0 insertions, 6209 deletions
diff --git a/contrib/binutils/bfd/elf32-ppc.c b/contrib/binutils/bfd/elf32-ppc.c deleted file mode 100644 index 4eb08ad..0000000 --- a/contrib/binutils/bfd/elf32-ppc.c +++ /dev/null @@ -1,6209 +0,0 @@ -/* 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" |