| /* PowerPC-specific support for 32-bit ELF |
| Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
| 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 struct bfd_hash_entry *ppc_elf_link_hash_newfunc |
| PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, |
| const char *string)); |
| static struct bfd_link_hash_table *ppc_elf_link_hash_table_create |
| PARAMS ((bfd *abfd)); |
| static void ppc_elf_copy_indirect_symbol |
| PARAMS ((struct elf_backend_data *bed, struct elf_link_hash_entry *dir, |
| struct elf_link_hash_entry *ind)); |
| static reloc_howto_type *ppc_elf_reloc_type_lookup |
| PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
| static void ppc_elf_info_to_howto |
| PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)); |
| static void ppc_elf_howto_init |
| PARAMS ((void)); |
| static int ppc_elf_sort_rela |
| PARAMS ((const PTR, const PTR)); |
| static bfd_boolean ppc_elf_relax_section |
| PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); |
| static bfd_reloc_status_type ppc_elf_addr16_ha_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type ppc_elf_unhandled_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_boolean ppc_elf_object_p |
| PARAMS ((bfd *)); |
| static bfd_boolean ppc_elf_set_private_flags |
| PARAMS ((bfd *, flagword)); |
| static bfd_boolean ppc_elf_merge_private_bfd_data |
| PARAMS ((bfd *, bfd *)); |
| static int ppc_elf_additional_program_headers |
| PARAMS ((bfd *)); |
| static bfd_boolean ppc_elf_modify_segment_map |
| PARAMS ((bfd *)); |
| static bfd_boolean ppc_elf_create_got |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static bfd_boolean ppc_elf_create_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static bfd_boolean ppc_elf_section_from_shdr |
| PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
| static bfd_boolean ppc_elf_fake_sections |
| PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
| static elf_linker_section_t *ppc_elf_create_linker_section |
| PARAMS ((bfd *abfd, struct bfd_link_info *info, |
| enum elf_linker_section_enum)); |
| static bfd_boolean update_local_sym_info |
| PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned long, int)); |
| static void bad_shared_reloc |
| PARAMS ((bfd *, enum elf_ppc_reloc_type)); |
| static bfd_boolean ppc_elf_check_relocs |
| PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| const Elf_Internal_Rela *)); |
| static asection *ppc_elf_gc_mark_hook |
| PARAMS ((asection *sec, struct bfd_link_info *info, Elf_Internal_Rela *rel, |
| struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); |
| static bfd_boolean ppc_elf_gc_sweep_hook |
| PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec, |
| const Elf_Internal_Rela *relocs)); |
| static bfd_boolean ppc_elf_adjust_dynamic_symbol |
| PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| static bfd_boolean allocate_dynrelocs |
| PARAMS ((struct elf_link_hash_entry *, PTR)); |
| static bfd_boolean readonly_dynrelocs |
| PARAMS ((struct elf_link_hash_entry *, PTR)); |
| static bfd_boolean ppc_elf_size_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static bfd_boolean ppc_elf_relocate_section |
| PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, |
| asection **)); |
| static bfd_boolean ppc_elf_add_symbol_hook |
| PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| const char **, flagword *, asection **, bfd_vma *)); |
| static bfd_boolean ppc_elf_finish_dynamic_symbol |
| PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| Elf_Internal_Sym *)); |
| static bfd_boolean ppc_elf_finish_dynamic_sections |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| static enum elf_reloc_type_class ppc_elf_reloc_type_class |
| PARAMS ((const Elf_Internal_Rela *)); |
| static bfd_boolean ppc_elf_grok_prstatus |
| PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
| static bfd_boolean ppc_elf_grok_psinfo |
| PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
| |
| /* 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 |
| |
| /* Will references to this symbol always reference the symbol |
| in this object? STV_PROTECTED is excluded from the visibility test |
| here so that function pointer comparisons work properly. Since |
| function symbols not defined in an app are set to their .plt entry, |
| it's necessary for shared libs to also reference the .plt even |
| though the symbol is really local to the shared lib. */ |
| #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
| ((! INFO->shared \ |
| || INFO->symbolic \ |
| || H->dynindx == -1 \ |
| || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \ |
| || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \ |
| && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) |
| |
| /* Will _calls_ to this symbol always call the version in this object? */ |
| #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
| ((! INFO->shared \ |
| || INFO->symbolic \ |
| || H->dynindx == -1 \ |
| || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \ |
| && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) |
| |
| /* 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; |
| |
| /* 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; |
| |
| /* Short-cut to first output tls section. */ |
| asection *tls_sec; |
| |
| /* 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 (entry, table, string) |
| 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)->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 (abfd) |
| bfd *abfd; |
| { |
| struct ppc_elf_link_hash_table *ret; |
| |
| ret = ((struct ppc_elf_link_hash_table *) |
| bfd_malloc (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; |
| } |
| |
| ret->got = NULL; |
| ret->relgot = NULL; |
| ret->plt = NULL; |
| ret->relplt = NULL; |
| ret->dynbss = NULL; |
| ret->relbss = NULL; |
| ret->dynsbss = NULL; |
| ret->relsbss = NULL; |
| ret->sdata = NULL; |
| ret->sdata2 = NULL; |
| ret->tls_sec = NULL; |
| ret->tls_get_addr = NULL; |
| ret->tlsld_got.refcount = 0; |
| ret->sym_sec.abfd = 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 (bed, dir, ind) |
| struct elf_backend_data *bed; |
| struct elf_link_hash_entry *dir, *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)); |
| else |
| _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
| } |
| |
| static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max]; |
| |
| static reloc_howto_type ppc_elf_howto_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 */ |
| |
| /* 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 () |
| { |
| 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]; |
| } |
| } |
| |
| /* This function handles relaxing for the PPC with option --mpc860c0[=<n>]. |
| |
| The MPC860, revision C0 or earlier contains a bug in the die. |
| If all of the following conditions are true, the next instruction |
| to be executed *may* be treated as a no-op. |
| 1/ A forward branch is executed. |
| 2/ The branch is predicted as not taken. |
| 3/ The branch is taken. |
| 4/ The branch is located in the last 5 words of a page. |
| (The EOP limit is 5 by default but may be specified as any value |
| from 1-10.) |
| |
| Our software solution is to detect these problematic branches in a |
| linker pass and modify them as follows: |
| 1/ Unconditional branches - Since these are always predicted taken, |
| there is no problem and no action is required. |
| 2/ Conditional backward branches - No problem, no action required. |
| 3/ Conditional forward branches - Ensure that the "inverse prediction |
| bit" is set (ensure it is predicted taken). |
| 4/ Conditional register branches - Ensure that the "y bit" is set |
| (ensure it is predicted taken). */ |
| |
| /* Sort sections by address. */ |
| |
| static int |
| ppc_elf_sort_rela (arg1, arg2) |
| const PTR arg1; |
| const PTR arg2; |
| { |
| const Elf_Internal_Rela **rela1 = (const Elf_Internal_Rela**) arg1; |
| const Elf_Internal_Rela **rela2 = (const Elf_Internal_Rela**) arg2; |
| |
| /* Sort by offset. */ |
| return ((*rela1)->r_offset - (*rela2)->r_offset); |
| } |
| |
| static bfd_boolean |
| ppc_elf_relax_section (abfd, isec, link_info, again) |
| bfd *abfd; |
| asection *isec; |
| struct bfd_link_info *link_info; |
| bfd_boolean *again; |
| { |
| #define PAGESIZE 0x1000 |
| |
| bfd_byte *contents = NULL; |
| bfd_byte *free_contents = NULL; |
| Elf_Internal_Rela *internal_relocs = NULL; |
| Elf_Internal_Rela *free_relocs = NULL; |
| Elf_Internal_Rela **rela_comb = NULL; |
| int comb_curr, comb_count; |
| |
| /* We never have to do this more than once per input section. */ |
| *again = FALSE; |
| |
| /* If needed, initialize this section's cooked size. */ |
| if (isec->_cooked_size == 0) |
| isec->_cooked_size = isec->_raw_size; |
| |
| /* We're only interested in text sections which overlap the |
| troublesome area at the end of a page. */ |
| if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size) |
| { |
| bfd_vma dot, end_page, end_section; |
| bfd_boolean section_modified; |
| |
| /* 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_byte *) bfd_malloc (isec->_raw_size); |
| if (contents == NULL) |
| goto error_return; |
| free_contents = contents; |
| |
| if (! bfd_get_section_contents (abfd, isec, contents, |
| (file_ptr) 0, isec->_raw_size)) |
| goto error_return; |
| } |
| |
| comb_curr = 0; |
| comb_count = 0; |
| if (isec->reloc_count) |
| { |
| unsigned n; |
| bfd_size_type amt; |
| |
| /* Get a copy of the native relocations. */ |
| internal_relocs |
| = _bfd_elf_link_read_relocs (abfd, isec, (PTR) NULL, |
| (Elf_Internal_Rela *) NULL, |
| link_info->keep_memory); |
| if (internal_relocs == NULL) |
| goto error_return; |
| if (! link_info->keep_memory) |
| free_relocs = internal_relocs; |
| |
| /* Setup a faster access method for the reloc info we need. */ |
| amt = isec->reloc_count; |
| amt *= sizeof (Elf_Internal_Rela*); |
| rela_comb = (Elf_Internal_Rela**) bfd_malloc (amt); |
| if (rela_comb == NULL) |
| goto error_return; |
| for (n = 0; n < isec->reloc_count; ++n) |
| { |
| long r_type; |
| |
| r_type = ELF32_R_TYPE (internal_relocs[n].r_info); |
| if (r_type < 0 || r_type >= (int) R_PPC_max) |
| goto error_return; |
| |
| /* Prologue constants are sometimes present in the ".text" |
| sections and they can be identified by their associated |
| relocation. We don't want to process those words and |
| some others which can also be identified by their |
| relocations. However, not all conditional branches will |
| have a relocation so we will only ignore words that |
| 1) have a reloc, and 2) the reloc is not applicable to a |
| conditional branch. The array rela_comb is built here |
| for use in the EOP scan loop. */ |
| switch (r_type) |
| { |
| case R_PPC_ADDR14_BRNTAKEN: |
| case R_PPC_REL14: |
| case R_PPC_REL14_BRNTAKEN: |
| /* We should check the instruction. */ |
| break; |
| default: |
| /* The word is not a conditional branch - ignore it. */ |
| rela_comb[comb_count++] = &internal_relocs[n]; |
| break; |
| } |
| } |
| if (comb_count > 1) |
| qsort (rela_comb, (size_t) comb_count, sizeof (int), |
| ppc_elf_sort_rela); |
| } |
| |
| /* Enumerate each EOP region that overlaps this section. */ |
| end_section = isec->vma + isec->_cooked_size; |
| dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1; |
| dot -= link_info->mpc860c0; |
| section_modified = FALSE; |
| /* Increment the start position if this section begins in the |
| middle of its first EOP region. */ |
| if (dot < isec->vma) |
| dot = isec->vma; |
| for (; |
| dot < end_section; |
| dot += PAGESIZE, end_page += PAGESIZE) |
| { |
| /* Check each word in this EOP region. */ |
| for (; dot < end_page; dot += 4) |
| { |
| bfd_vma isec_offset; |
| unsigned long insn; |
| bfd_boolean skip, modified; |
| |
| /* Don't process this word if there is a relocation for it |
| and the relocation indicates the word is not a |
| conditional branch. */ |
| skip = FALSE; |
| isec_offset = dot - isec->vma; |
| for (; comb_curr<comb_count; ++comb_curr) |
| { |
| bfd_vma r_offset; |
| |
| r_offset = rela_comb[comb_curr]->r_offset; |
| if (r_offset >= isec_offset) |
| { |
| if (r_offset == isec_offset) skip = TRUE; |
| break; |
| } |
| } |
| if (skip) continue; |
| |
| /* Check the current word for a problematic conditional |
| branch. */ |
| #define BO0(insn) ((insn) & 0x02000000) |
| #define BO2(insn) ((insn) & 0x00800000) |
| #define BO4(insn) ((insn) & 0x00200000) |
| insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset); |
| modified = FALSE; |
| if ((insn & 0xFc000000) == 0x40000000) |
| { |
| /* Instruction is BCx */ |
| if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) |
| { |
| bfd_vma target; |
| |
| /* This branch is predicted as "normal". |
| If this is a forward branch, it is problematic. */ |
| target = insn & 0x0000Fffc; |
| target = (target ^ 0x8000) - 0x8000; |
| if ((insn & 0x00000002) == 0) |
| /* Convert to abs. */ |
| target += dot; |
| if (target > dot) |
| { |
| /* Set the prediction bit. */ |
| insn |= 0x00200000; |
| modified = TRUE; |
| } |
| } |
| } |
| else if ((insn & 0xFc00Fffe) == 0x4c000420) |
| { |
| /* Instruction is BCCTRx. */ |
| if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) |
| { |
| /* This branch is predicted as not-taken. |
| If this is a forward branch, it is problematic. |
| Since we can't tell statically if it will branch |
| forward, always set the prediction bit. */ |
| insn |= 0x00200000; |
| modified = TRUE; |
| } |
| } |
| else if ((insn & 0xFc00Fffe) == 0x4c000020) |
| { |
| /* Instruction is BCLRx */ |
| if ((!BO0(insn) || !BO2(insn)) && !BO4(insn)) |
| { |
| /* This branch is predicted as not-taken. |
| If this is a forward branch, it is problematic. |
| Since we can't tell statically if it will branch |
| forward, always set the prediction bit. */ |
| insn |= 0x00200000; |
| modified = TRUE; |
| } |
| } |
| #undef BO0 |
| #undef BO2 |
| #undef BO4 |
| if (modified) |
| { |
| bfd_put_32 (abfd, (bfd_vma) insn, contents + isec_offset); |
| section_modified = TRUE; |
| } |
| } |
| } |
| if (section_modified) |
| { |
| elf_section_data (isec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| } |
| } |
| |
| if (rela_comb != NULL) |
| { |
| free (rela_comb); |
| rela_comb = NULL; |
| } |
| |
| if (free_relocs != NULL) |
| { |
| free (free_relocs); |
| free_relocs = NULL; |
| } |
| |
| if (free_contents != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_contents); |
| else |
| { |
| /* Cache the section contents for elf_link_input_bfd. */ |
| elf_section_data (isec)->this_hdr.contents = contents; |
| } |
| free_contents = NULL; |
| } |
| |
| return TRUE; |
| |
| error_return: |
| if (rela_comb != NULL) |
| free (rela_comb); |
| if (free_relocs != NULL) |
| free (free_relocs); |
| if (free_contents != NULL) |
| free (free_contents); |
| return FALSE; |
| } |
| |
| static reloc_howto_type * |
| ppc_elf_reloc_type_lookup (abfd, code) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| enum elf_ppc_reloc_type r; |
| |
| if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
| /* Initialize howto table if needed. */ |
| ppc_elf_howto_init (); |
| |
| switch ((int) code) |
| { |
| default: |
| return (reloc_howto_type *) 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[(int) r]; |
| }; |
| |
| /* Set the howto pointer for a PowerPC ELF reloc. */ |
| |
| static void |
| ppc_elf_info_to_howto (abfd, cache_ptr, dst) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *cache_ptr; |
| Elf_Internal_Rela *dst; |
| { |
| if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
| /* Initialize howto table if needed. */ |
| ppc_elf_howto_init (); |
| |
| BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); |
| 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 (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data ATTRIBUTE_UNUSED; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message ATTRIBUTE_UNUSED; |
| { |
| 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 (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR 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 (abfd) |
| 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 (abfd, 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 (ibfd, obfd) |
| 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 (abfd, hdr, name) |
| 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 (abfd, shdr, asect) |
| 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; |
| } |
| |
| /* Create a special linker section */ |
| static elf_linker_section_t * |
| ppc_elf_create_linker_section (abfd, info, which) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| enum elf_linker_section_enum which; |
| { |
| bfd *dynobj = elf_hash_table (info)->dynobj; |
| elf_linker_section_t *lsect; |
| |
| /* Record the first bfd section that needs the special section. */ |
| if (!dynobj) |
| dynobj = elf_hash_table (info)->dynobj = abfd; |
| |
| /* If this is the first time, create the section. */ |
| lsect = elf_linker_section (dynobj, which); |
| if (!lsect) |
| { |
| elf_linker_section_t defaults; |
| static elf_linker_section_t zero_section; |
| |
| defaults = zero_section; |
| defaults.which = which; |
| defaults.hole_written_p = FALSE; |
| defaults.alignment = 2; |
| |
| /* 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. */ |
| defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| | SEC_IN_MEMORY); |
| |
| switch (which) |
| { |
| default: |
| (*_bfd_error_handler) (_("%s: unknown special linker type %d"), |
| bfd_get_filename (abfd), |
| (int) which); |
| |
| bfd_set_error (bfd_error_bad_value); |
| return (elf_linker_section_t *) 0; |
| |
| case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ |
| defaults.name = ".sdata"; |
| defaults.rel_name = ".rela.sdata"; |
| defaults.bss_name = ".sbss"; |
| defaults.sym_name = "_SDA_BASE_"; |
| defaults.sym_offset = 32768; |
| break; |
| |
| case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ |
| defaults.name = ".sdata2"; |
| defaults.rel_name = ".rela.sdata2"; |
| defaults.bss_name = ".sbss2"; |
| defaults.sym_name = "_SDA2_BASE_"; |
| defaults.sym_offset = 32768; |
| defaults.flags |= SEC_READONLY; |
| break; |
| } |
| |
| lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); |
| } |
| |
| 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 (abfd) |
| 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 (abfd) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| { |
| return TRUE; |
| } |
| |
| /* The powerpc .got has a blrl instruction in it. Mark it executable. */ |
| |
| static bfd_boolean |
| ppc_elf_create_got (abfd, info) |
| 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 (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| struct ppc_elf_link_hash_table *htab; |
| asection *s; |
| flagword flags; |
| |
| if (!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 = ppc_elf_hash_table (info); |
| 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 (info, h) |
| 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 (! htab->elf.dynamic_sections_created |
| || SYMBOL_CALLS_LOCAL (info, h) |
| || h->plt.refcount <= 0) |
| { |
| /* 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. |
| |
| 2. We know for certain that a call to this symbol |
| will go to this object. |
| |
| 3. GC has rendered the entry unused. */ |
| 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; |
| } |
| |
| /* This is the condition under which finish_dynamic_symbol will be |
| called from elflink.h. If elflink.h doesn't call our |
| finish_dynamic_symbol routine, we'll need to do something about |
| initializing any .plt and .got entries in relocate_section. */ |
| #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
| ((DYN) \ |
| && ((SHARED) \ |
| || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
| && ((H)->dynindx != -1 \ |
| || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) |
| |
| /* 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 (h, inf) |
| struct elf_link_hash_entry *h; |
| PTR inf; |
| { |
| struct bfd_link_info *info = (struct bfd_link_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 |
| && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| || h->root.type != bfd_link_hash_undefweak)) |
| { |
| /* 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_elf32_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_elf32_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) |
| { |
| if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 |
| && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 |
| || info->symbolic)) |
| { |
| 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; |
| } |
| 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_elf64_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 (h, info) |
| struct elf_link_hash_entry *h; |
| PTR 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 (output_bfd, info) |
| 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->shared) |
| { |
| 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_byte *) 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_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) |
| |
| if (!info->shared) |
| { |
| 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, |
| (PTR) 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 (abfd, symtab_hdr, r_symndx, tls_type) |
| 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_signed_vma *) 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 (abfd, r_type) |
| 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[(int) 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 (abfd, info, sec, 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->relocateable) |
| 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 |
| |
| /* 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 = elf_linker_section (abfd, LINKER_SECTION_SDATA); |
| 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 = elf_linker_section (abfd, LINKER_SECTION_SDATA2); |
| 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 = (enum elf_ppc_reloc_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 (!bfd_elf32_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 (!bfd_elf32_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_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_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| return FALSE; |
| break; |
| |
| /* This relocation describes which C++ vtable entries are actually |
| used. Record for later use during GC. */ |
| case R_PPC_GNU_VTENTRY: |
| if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| return FALSE; |
| 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 need 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 = ((struct ppc_elf_dyn_relocs *) |
| 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 (sec, info, rel, h, sym) |
| asection *sec; |
| struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| Elf_Internal_Rela *rel; |
| struct elf_link_hash_entry *h; |
| Elf_Internal_Sym *sym; |
| { |
| 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 (abfd, info, sec, 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; |
| 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 = (enum elf_ppc_reloc_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_sec and htab->tls_get_addr. */ |
| |
| bfd_boolean |
| ppc_elf_tls_setup (obfd, info) |
| bfd *obfd; |
| struct bfd_link_info *info; |
| { |
| asection *tls; |
| 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); |
| |
| for (tls = obfd->sections; tls != NULL; tls = tls->next) |
| if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) |
| == (SEC_THREAD_LOCAL | SEC_LOAD)) |
| break; |
| htab->tls_sec = tls; |
| |
| return tls != NULL; |
| } |
| |
| /* Run through all the TLS relocs looking for optimization |
| opportunities. */ |
| |
| bfd_boolean |
| ppc_elf_tls_optimize (obfd, info) |
| bfd *obfd ATTRIBUTE_UNUSED; |
| struct bfd_link_info *info; |
| { |
| bfd *ibfd; |
| asection *sec; |
| struct ppc_elf_link_hash_table *htab; |
| |
| if (info->relocateable || 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, (PTR) NULL, |
| (Elf_Internal_Rela *) 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 = (enum elf_ppc_reloc_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 (abfd, info, sym, namep, flagsp, secp, valp) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| const Elf_Internal_Sym *sym; |
| const char **namep ATTRIBUTE_UNUSED; |
| flagword *flagsp ATTRIBUTE_UNUSED; |
| asection **secp; |
| bfd_vma *valp; |
| { |
| if (sym->st_shndx == SHN_COMMON |
| && !info->relocateable |
| && sym->st_size <= elf_gp_size (abfd) |
| && info->hash->creator->flavour == bfd_target_elf_flavour) |
| { |
| /* Common symbols less than or equal to -G nn bytes are automatically |
| put into .sdata. */ |
| elf_linker_section_t *sdata |
| = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); |
| |
| if (!sdata->bss_section) |
| { |
| bfd_size_type amt; |
| |
| /* We don't go through bfd_make_section, because we don't |
| want to attach this common section to DYNOBJ. The linker |
| will move the symbols to the appropriate output section |
| when it defines common symbols. */ |
| amt = sizeof (asection); |
| sdata->bss_section = (asection *) bfd_zalloc (abfd, amt); |
| if (sdata->bss_section == NULL) |
| return FALSE; |
| sdata->bss_section->name = sdata->bss_name; |
| sdata->bss_section->flags = SEC_IS_COMMON; |
| sdata->bss_section->output_section = sdata->bss_section; |
| amt = sizeof (asymbol); |
| sdata->bss_section->symbol = (asymbol *) bfd_zalloc (abfd, amt); |
| amt = sizeof (asymbol *); |
| sdata->bss_section->symbol_ptr_ptr = |
| (asymbol **) bfd_zalloc (abfd, amt); |
| if (sdata->bss_section->symbol == NULL |
| || sdata->bss_section->symbol_ptr_ptr == NULL) |
| return FALSE; |
| sdata->bss_section->symbol->name = sdata->bss_name; |
| sdata->bss_section->symbol->flags = BSF_SECTION_SYM; |
| sdata->bss_section->symbol->section = sdata->bss_section; |
| *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol; |
| } |
| |
| *secp = sdata->bss_section; |
| *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 (output_bfd, info, h, sym) |
| 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 (output_bfd, info) |
| 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, (bfd_vma) 0x4e800021 /* blrl */, contents); |
| |
| if (sdyn == NULL) |
| bfd_put_32 (output_bfd, (bfd_vma) 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 |
| relocateable 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 relocateable 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 (output_bfd, info, input_bfd, input_section, |
| contents, relocs, local_syms, local_sections) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| bfd *input_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| Elf_Internal_Rela *relocs; |
| Elf_Internal_Sym *local_syms; |
| asection **local_sections; |
| { |
| 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->relocateable) ? " (relocatable)" : ""); |
| #endif |
| |
| if (info->relocateable) |
| return TRUE; |
| |
| if (!ppc_elf_howto_table[R_PPC_ADDR32]) |
| /* Initialize howto table if needed. */ |
| ppc_elf_howto_init (); |
| |
| htab = ppc_elf_hash_table (info); |
| local_got_offsets = elf_local_got_offsets (input_bfd); |
| 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 = (enum elf_ppc_reloc_type)ELF32_R_TYPE (rel->r_info); |
| sym = (Elf_Internal_Sym *) 0; |
| sec = (asection *) 0; |
| h = (struct elf_link_hash_entry *) 0; |
| 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 |
| { |
| 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; |
| sym_name = h->root.root.string; |
| |
| relocation = 0; |
| if (h->root.type == bfd_link_hash_defined |
| || h->root.type == bfd_link_hash_defweak) |
| { |
| sec = h->root.u.def.section; |
| /* Set a flag that will be cleared later if we find a |
| relocation value for this symbol. output_section |
| is typically NULL for symbols satisfied by a shared |
| library. */ |
| if (sec->output_section == NULL) |
| unresolved_reloc = TRUE; |
| else |
| relocation = (h->root.u.def.value |
| + sec->output_section->vma |
| + sec->output_offset); |
| } |
| else if (h->root.type == bfd_link_hash_undefweak) |
| ; |
| else if (info->shared |
| && !info->no_undefined |
| && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| ; |
| else |
| { |
| if (! ((*info->callbacks->undefined_symbol) |
| (info, h->root.root.string, input_bfd, input_section, |
| rel->r_offset, (!info->shared |
| || info->no_undefined |
| || ELF_ST_VISIBILITY (h->other))))) |
| return FALSE; |
| warned = TRUE; |
| } |
| } |
| |
| /* 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 |
| = (enum elf_ppc_reloc_type) 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->tls_sec->vma + DTP_OFFSET; |
| rel[1].r_addend = htab->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 predicition 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 ((unsigned) r_type < (unsigned) R_PPC_max) |
| howto = ppc_elf_howto_table[(int) 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->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->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->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->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->tls_sec->vma + TP_OFFSET; |
| goto dodyn; |
| |
| case R_PPC_DTPREL32: |
| addend -= htab->tls_sec->vma + DTP_OFFSET; |
| goto dodyn; |
| |
| case R_PPC_DTPMOD32: |
| relocation = 1; |
| addend = 0; |
| goto dodyn; |
| |
| case R_PPC_REL24: |
| case R_PPC_REL32: |
| case R_PPC_REL14: |
| case R_PPC_REL14_BRTAKEN: |
| case R_PPC_REL14_BRNTAKEN: |
| /* If these relocations are not to a named symbol, they can be |
| handled right here, no need to bother the dynamic linker. */ |
| if (h == NULL |
| || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
| || SYMBOL_REFERENCES_LOCAL (info, h)) |
| 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) |
| || (h != NULL |
| && h->dynindx != -1 |
| && (!info->symbolic |
| || (h->elf_link_hash_flags |
| & ELF_LINK_HASH_DEF_REGULAR) == 0)))) |
| || (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 need 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 (h != NULL |
| && !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; |
| |
| /* Indirect .sdata relocation. */ |
| case R_PPC_EMB_SDAI16: |
| BFD_ASSERT (htab->sdata != NULL); |
| relocation |
| = bfd_elf32_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 |
| = bfd_elf32_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 != (asection *) 0); |
| 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 != (asection *) 0); |
| 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 != (asection *) 0); |
| 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 != (asection *) 0); |
| 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 != (asection *) 0); |
| 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 (rela) |
| const Elf_Internal_Rela *rela; |
| { |
| switch ((int) 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 (abfd, note) |
| 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 (abfd, note) |
| 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 PARAMS ((void)); |
| static void apuinfo_list_add PARAMS ((unsigned long)); |
| static unsigned apuinfo_list_length PARAMS ((void)); |
| static unsigned long apuinfo_list_element PARAMS ((unsigned long)); |
| static void apuinfo_list_finish PARAMS ((void)); |
| |
| extern void ppc_elf_begin_write_processing |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| extern void ppc_elf_final_write_processing |
| PARAMS ((bfd *, bfd_boolean)); |
| extern bfd_boolean ppc_elf_write_section |
| PARAMS ((bfd *, asection *, bfd_byte *)); |
| |
| |
| static void |
| apuinfo_list_init PARAMS ((void)) |
| { |
| head = NULL; |
| } |
| |
| static void |
| apuinfo_list_add (value) |
| 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 PARAMS ((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 (number) |
| unsigned long number; |
| { |
| apuinfo_list * entry; |
| |
| for (entry = head; |
| entry && number --; |
| entry = entry->next) |
| ; |
| |
| return entry ? entry->value : 0; |
| } |
| |
| static void |
| apuinfo_list_finish PARAMS ((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. */ |
| |
| void |
| ppc_elf_begin_write_processing (abfd, link_info) |
| 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 apuinfo entries. */ |
| datum = bfd_get_32 (ibfd, ptr + 4); |
| if ((datum * 4 + 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++) |
| apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + (i * 4))); |
| |
| /* 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. */ |
| |
| bfd_boolean |
| ppc_elf_write_section (abfd, asec, contents) |
| 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. */ |
| |
| void |
| ppc_elf_final_write_processing (abfd, linker) |
| 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, 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 (); |
| } |
| |
| #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 |
| #define ELF_MAXPAGESIZE 0x10000 |
| #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_plt_header_size PLT_INITIAL_ENTRY_SIZE |
| #define elf_backend_rela_normal 1 |
| |
| #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 |
| |
| #include "elf32-target.h" |