X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf32-ppc.c;h=4c9ff8297f97d50fff2b3360a36cef9de55d69ab;hb=2c73f9d86113b392342ec5a8cff8a42be78bd429;hp=3c7999b760c7ea74e398f1cf3a1216ed4e12c6a5;hpb=d6cf28795dd28a7c5d34a58a015b7b04a932bdc7;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index 3c7999b760..4c9ff8297f 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -1,5 +1,6 @@ /* PowerPC-specific support for 32-bit ELF - Copyright 1994, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. + Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 + Free Software Foundation, Inc. Written by Ian Lance Taylor, Cygnus Support. This file is part of BFD, the Binary File Descriptor library. @@ -32,16 +33,17 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define USE_RELA /* we want RELA relocations, not REL */ - static reloc_howto_type *ppc_elf_reloc_type_lookup PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); static void ppc_elf_info_to_howto PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); static void ppc_elf_howto_init PARAMS ((void)); +static int ppc_elf_sort_rela PARAMS ((const PTR, const PTR)); +static boolean ppc_elf_relax_section + PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); static bfd_reloc_status_type ppc_elf_addr16_ha_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword)); -static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); static int ppc_elf_additional_program_headers PARAMS ((bfd *)); @@ -105,6 +107,12 @@ static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *, Elf_Internal_Sym *)); static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); +static enum elf_reloc_type_class ppc_elf_reloc_type_class + PARAMS ((const Elf_Internal_Rela *)); +static boolean ppc_elf_grok_prstatus + PARAMS ((bfd *abfd, Elf_Internal_Note *note)); +static boolean ppc_elf_grok_psinfo + PARAMS ((bfd *abfd, Elf_Internal_Note *note)); #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */ #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */ @@ -124,11 +132,27 @@ static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_i /* The number of single-slot PLT entries (the rest use two slots). */ #define PLT_NUM_SINGLE_ENTRIES 8192 +/* Will references to this symbol always reference the symbol + in this object? */ +#define SYMBOL_REFERENCES_LOCAL(INFO, H) \ + ((! INFO->shared \ + || INFO->symbolic \ + || H->dynindx == -1 \ + || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \ + || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \ + && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) + +/* Will _calls_ to this symbol always call the version in this object? */ +#define SYMBOL_CALLS_LOCAL(INFO, H) \ + ((! INFO->shared \ + || INFO->symbolic \ + || H->dynindx == -1 \ + || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \ + && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) -static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ]; +static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max]; -static reloc_howto_type ppc_elf_howto_raw[] = -{ +static reloc_howto_type ppc_elf_howto_raw[] = { /* This reloc does nothing. */ HOWTO (R_PPC_NONE, /* type */ 0, /* rightshift */ @@ -221,7 +245,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 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. */ + 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) */ @@ -254,7 +278,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = /* 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. */ + bits must be zero. */ HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -286,7 +310,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xfffc, /* dst_mask */ false), /* pcrel_offset */ - /* A relative 26 bit branch; the lower two bits must be zero. */ + /* 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) */ @@ -301,7 +325,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0x3fffffc, /* dst_mask */ true), /* pcrel_offset */ - /* A relative 16 bit branch; the lower two bits must be zero. */ + /* 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) */ @@ -316,7 +340,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xfffc, /* dst_mask */ true), /* pcrel_offset */ - /* A relative 16 bit branch. Bit 10 should be set to indicate that + /* 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 */ @@ -333,7 +357,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xfffc, /* dst_mask */ true), /* pcrel_offset */ - /* A relative 16 bit branch. Bit 10 should be set to indicate that + /* 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 */ @@ -560,7 +584,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = true), /* pcrel_offset */ /* 32-bit relocation to the symbol's procedure linkage table. - FIXME: not supported. */ + FIXME: not supported. */ HOWTO (R_PPC_PLT32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -576,7 +600,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = false), /* pcrel_offset */ /* 32-bit PC relative relocation to the symbol's procedure linkage table. - FIXME: not supported. */ + FIXME: not supported. */ HOWTO (R_PPC_PLTREL32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -655,7 +679,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xffff, /* dst_mask */ false), /* pcrel_offset */ - /* 32-bit section relative relocation. */ + /* 32-bit section relative relocation. */ HOWTO (R_PPC_SECTOFF, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -670,7 +694,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0, /* dst_mask */ true), /* pcrel_offset */ - /* 16-bit lower half section relative relocation. */ + /* 16-bit lower half section relative relocation. */ HOWTO (R_PPC_SECTOFF_LO, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ @@ -685,7 +709,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xffff, /* dst_mask */ false), /* pcrel_offset */ - /* 16-bit upper half section relative relocation. */ + /* 16-bit upper half section relative relocation. */ HOWTO (R_PPC_SECTOFF_HI, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ @@ -700,7 +724,7 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xffff, /* dst_mask */ false), /* pcrel_offset */ - /* 16-bit upper half adjusted section relative relocation. */ + /* 16-bit upper half adjusted section relative relocation. */ HOWTO (R_PPC_SECTOFF_HA, /* type */ 16, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ @@ -931,7 +955,6 @@ static reloc_howto_type ppc_elf_howto_raw[] = 0xffff, /* dst_mask */ false), /* pcrel_offset */ }; - /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ @@ -943,11 +966,10 @@ ppc_elf_howto_init () for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++) { type = ppc_elf_howto_raw[i].type; - BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0])); + BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0])); ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; } } - /* This function handles relaxing for the PPC with option --mpc860c0[=]. @@ -959,7 +981,7 @@ ppc_elf_howto_init () 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, @@ -975,22 +997,22 @@ ppc_elf_howto_init () static int ppc_elf_sort_rela (arg1, arg2) - const void *arg1; - const void *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. */ + /* Sort by offset. */ return ((*rela1)->r_offset - (*rela2)->r_offset); } static boolean ppc_elf_relax_section (abfd, isec, link_info, again) - bfd *abfd; - asection *isec; - struct bfd_link_info *link_info; - boolean *again; + bfd *abfd; + asection *isec; + struct bfd_link_info *link_info; + boolean *again; { #define PAGESIZE 0x1000 @@ -1001,7 +1023,7 @@ ppc_elf_relax_section (abfd, isec, link_info, again) Elf_Internal_Rela **rela_comb = NULL; int comb_curr, comb_count; - /* We never have to do this more than once per input section. */ + /* We never have to do this more than once per input section. */ *again = false; /* If needed, initialize this section's cooked size. */ @@ -1009,13 +1031,13 @@ ppc_elf_relax_section (abfd, isec, link_info, again) isec->_cooked_size = isec->_raw_size; /* We're only interested in text sections which overlap the - troublesome area at the end of a page. */ + 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; boolean section_modified; - /* Get the section contents. */ + /* 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; @@ -1024,42 +1046,44 @@ ppc_elf_relax_section (abfd, isec, link_info, again) /* Go get them off disk. */ contents = (bfd_byte *) bfd_malloc (isec->_raw_size); if (contents == NULL) - goto error_return; + goto error_return; free_contents = contents; if (! bfd_get_section_contents (abfd, isec, contents, (file_ptr) 0, isec->_raw_size)) - goto error_return; + goto error_return; } comb_curr = 0; comb_count = 0; if (isec->reloc_count) - { + { unsigned n; + bfd_size_type amt; /* Get a copy of the native relocations. */ internal_relocs = _bfd_elf32_link_read_relocs ( - abfd, isec, (PTR) NULL, (Elf_Internal_Rela *) NULL, + 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. */ - rela_comb = (Elf_Internal_Rela**) - bfd_malloc (isec->reloc_count*sizeof(Elf_Internal_Rela*)); + + /* 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; nreloc_count; ++n) + 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) + 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 @@ -1067,37 +1091,37 @@ ppc_elf_relax_section (abfd, isec, link_info, again) 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. */ + The array rela_comb is built here for use in the EOP scan loop. */ switch (r_type) { case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */ - case R_PPC_REL14: /* relative cond. br. */ + case R_PPC_REL14: /* relative cond. br. */ case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */ - /* We should check the instruction. */ + /* We should check the instruction. */ break; default: - /* The word is not a conditional branch - ignore it. */ + /* 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); - } + qsort (rela_comb, (size_t) comb_count, sizeof (int), ppc_elf_sort_rela); + } - /* Enumerate each EOP region that overlaps this section. */ + /* Enumerate each EOP region that overlaps this section. */ end_section = isec->vma + isec->_cooked_size; dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1; dot -= link_info->mpc860c0; section_modified = false; if (dot < isec->vma) /* Increment the start position if this section */ - dot = isec->vma; /* begins in the middle of its first EOP region. */ + dot = isec->vma; /* begins in the middle of its first EOP region. */ for (; dot < end_section; dot += PAGESIZE, end_page += PAGESIZE) { - /* Check each word in this EOP region. */ + /* Check each word in this EOP region. */ for (; dot < end_page; dot += 4) { bfd_vma isec_offset; @@ -1105,7 +1129,7 @@ ppc_elf_relax_section (abfd, isec, link_info, again) 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. */ + the relocation indicates the word is not a conditional branch. */ skip = false; isec_offset = dot - isec->vma; for (; comb_currr_info) < (unsigned int) R_PPC_max); @@ -1354,7 +1378,7 @@ ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section, return bfd_reloc_continue; } -/* Function to set whether a module needs the -mrelocatable bit set. */ +/* Function to set whether a module needs the -mrelocatable bit set. */ static boolean ppc_elf_set_private_flags (abfd, flags) @@ -1369,24 +1393,6 @@ ppc_elf_set_private_flags (abfd, flags) return true; } -/* Copy backend specific data from one object module to another */ -static boolean -ppc_elf_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - BFD_ASSERT (!elf_flags_init (obfd) - || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); - - elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; - elf_flags_init (obfd) = true; - return true; -} - /* Merge backend specific data from an object file to the output object file when linking */ static boolean @@ -1428,7 +1434,7 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd) error = true; (*_bfd_error_handler) (_("%s: compiled with -mrelocatable and linked with modules compiled normally"), - bfd_get_filename (ibfd)); + bfd_archive_filename (ibfd)); } else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 && (old_flags & EF_PPC_RELOCATABLE) != 0) @@ -1436,7 +1442,7 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd) error = true; (*_bfd_error_handler) (_("%s: compiled normally and linked with modules compiled with -mrelocatable"), - bfd_get_filename (ibfd)); + bfd_archive_filename (ibfd)); } /* The output is -mrelocatable-lib iff both the input files are. */ @@ -1462,7 +1468,7 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd) error = true; (*_bfd_error_handler) (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), - bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); + bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); } if (error) @@ -1474,7 +1480,6 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd) 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. */ @@ -1502,7 +1507,6 @@ ppc_elf_section_from_shdr (abfd, hdr, name) bfd_set_section_flags (abfd, newsect, flags); return true; } - /* Set up any other section flags and such that may be necessary. */ @@ -1520,7 +1524,6 @@ ppc_elf_fake_sections (abfd, shdr, asect) return true; } - /* Create a special linker section */ static elf_linker_section_t * @@ -1564,10 +1567,10 @@ ppc_elf_create_linker_section (abfd, info, which) default: (*_bfd_error_handler) (_("%s: Unknown special linker type %d"), bfd_get_filename (abfd), - (int)which); + (int) which); bfd_set_error (bfd_error_bad_value); - return (elf_linker_section_t *)0; + return (elf_linker_section_t *) 0; case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ defaults.name = ".sdata"; @@ -1592,10 +1595,9 @@ ppc_elf_create_linker_section (abfd, info, which) 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. */ +/* 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) @@ -1621,7 +1623,7 @@ ppc_elf_additional_program_headers (abfd) return ret; } -/* Modify the segment map if needed */ +/* Modify the segment map if needed. */ static boolean ppc_elf_modify_segment_map (abfd) @@ -1642,7 +1644,7 @@ ppc_elf_create_dynamic_sections (abfd, info) register asection *s; flagword flags; - if (!_bfd_elf_create_dynamic_sections(abfd, info)) + if (!_bfd_elf_create_dynamic_sections (abfd, info)) return false; flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY @@ -1695,7 +1697,6 @@ ppc_elf_adjust_dynamic_symbol (info, h) && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))); - /* If this is a function, put it in the procedure linkage table. We will fill in the contents of the procedure linkage table later, when we know the address of the .got section. */ @@ -1703,9 +1704,7 @@ ppc_elf_adjust_dynamic_symbol (info, h) || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) { if (! elf_hash_table (info)->dynamic_sections_created - || ((!info->shared || info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) != 0) + || SYMBOL_CALLS_LOCAL (info, h) || (info->shared && h->plt.refcount <= 0)) { /* A PLT entry is not required/allowed when: @@ -1713,9 +1712,8 @@ ppc_elf_adjust_dynamic_symbol (info, h) 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 symbol is defined in - this object, because this object is the application, - is linked with -Bsymbolic, or because the symbol is local. + 2. We know for certain that a call to this symbol + will go to this object. 3. GC has rendered the entry unused. Note, however, that in an executable all references to the @@ -1780,6 +1778,8 @@ ppc_elf_adjust_dynamic_symbol (info, h) 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 @@ -1864,20 +1864,18 @@ ppc_elf_adjust_dynamic_symbol (info, h) return true; } - /* Set the sizes of the dynamic sections. */ static boolean ppc_elf_size_dynamic_sections (output_bfd, info) - bfd *output_bfd; + bfd *output_bfd ATTRIBUTE_UNUSED; struct bfd_link_info *info; { bfd *dynobj; asection *s; boolean plt; boolean relocs; - boolean reltext; #ifdef DEBUG fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); @@ -1906,10 +1904,10 @@ ppc_elf_size_dynamic_sections (output_bfd, info) stripped from the output file below. */ static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata2", ".rela.sbss", - (char *)0 }; + (char *) 0 }; char **p; - for (p = rela_sections; *p != (char *)0; p++) + for (p = rela_sections; *p != (char *) 0; p++) { s = bfd_get_section_by_name (dynobj, *p); if (s != NULL) @@ -1922,7 +1920,6 @@ ppc_elf_size_dynamic_sections (output_bfd, info) memory for them. */ plt = false; relocs = false; - reltext = false; for (s = dynobj->sections; s != NULL; s = s->next) { const char *name; @@ -1968,22 +1965,9 @@ ppc_elf_size_dynamic_sections (output_bfd, info) } else { - asection *target; - const char *outname; - - /* Remember whether there are any relocation sections. */ + /* Remember whether there are any relocation sections. */ relocs = true; - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL entry. */ - outname = bfd_get_section_name (output_bfd, - s->output_section); - target = bfd_get_section_by_name (output_bfd, outname + 5); - if (target != NULL - && (target->flags & SEC_READONLY) != 0 - && (target->flags & SEC_ALLOC) != 0) - reltext = true; - /* We use the reloc_count field as a counter if we need to copy relocs into the output file. */ s->reloc_count = 0; @@ -2016,41 +2000,43 @@ ppc_elf_size_dynamic_sections (output_bfd, info) 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. */ - if (! info->shared) +#define add_dynamic_entry(TAG, VAL) \ + bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) + + if (!info->shared) { - if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) + if (!add_dynamic_entry (DT_DEBUG, 0)) return false; } if (plt) { - if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) - || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 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 (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, - sizeof (Elf32_External_Rela))) + 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 (reltext) + if ((info->flags & DF_TEXTREL) != 0) { - if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) + if (!add_dynamic_entry (DT_TEXTREL, 0)) return false; info->flags |= DF_TEXTREL; } } +#undef add_dynamic_entry return true; } - /* Look through the relocs for a section during the first phase, and allocate space in the global offset table or procedure linkage @@ -2081,7 +2067,7 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) #ifdef DEBUG fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n", bfd_get_section_name (abfd, sec), - bfd_get_filename (abfd)); + bfd_archive_filename (abfd)); #endif /* Create the linker generated sections all the time so that the @@ -2094,7 +2080,6 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) return false; } - if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL) { sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2); @@ -2107,7 +2092,7 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) local_got_refcounts = elf_local_got_refcounts (abfd); sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); + sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); if (!elf_bad_symtab (abfd)) sym_hashes_end -= symtab_hdr->sh_info; @@ -2182,7 +2167,7 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) if (h != NULL) { - if (h->got.refcount == -1) + if (h->got.refcount == 0) { /* Make sure this symbol is output as a dynamic symbol. */ if (h->dynindx == -1) @@ -2193,28 +2178,25 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) sgot->_raw_size += 4; /* Allocate relocation space. */ srelgot->_raw_size += sizeof (Elf32_External_Rela); - - h->got.refcount = 1; } - else - h->got.refcount++; + h->got.refcount++; } else { /* This is a global offset table entry for a local symbol. */ if (local_got_refcounts == NULL) { - size_t size; + bfd_size_type size; - size = symtab_hdr->sh_info * sizeof (bfd_signed_vma); - local_got_refcounts = (bfd_signed_vma *) - bfd_alloc (abfd, size); + size = symtab_hdr->sh_info; + size *= sizeof (bfd_signed_vma); + local_got_refcounts + = (bfd_signed_vma *) bfd_zalloc (abfd, size); if (local_got_refcounts == NULL) return false; elf_local_got_refcounts (abfd) = local_got_refcounts; - memset (local_got_refcounts, -1, size); } - if (local_got_refcounts[r_symndx] == -1) + if (local_got_refcounts[r_symndx] == 0) { sgot->_raw_size += 4; @@ -2223,11 +2205,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) dynamic linker can adjust this GOT entry. */ if (info->shared) srelgot->_raw_size += sizeof (Elf32_External_Rela); - - local_got_refcounts[r_symndx] = 1; } - else - local_got_refcounts[r_symndx]++; + local_got_refcounts[r_symndx]++; } break; @@ -2237,8 +2216,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) { ((*_bfd_error_handler) (_("%s: relocation %s cannot be used when making a shared object"), - bfd_get_filename (abfd), "R_PPC_EMB_SDAI16")); - return false; + bfd_archive_filename (abfd), "R_PPC_EMB_SDAI16")); + return false; } if (srelgot == NULL && (h != NULL || info->shared)) @@ -2271,7 +2250,7 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) { ((*_bfd_error_handler) (_("%s: relocation %s cannot be used when making a shared object"), - bfd_get_filename (abfd), "R_PPC_EMB_SDA2I16")); + bfd_archive_filename (abfd), "R_PPC_EMB_SDA2I16")); return false; } @@ -2306,8 +2285,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) { ((*_bfd_error_handler) (_("%s: relocation %s cannot be used when making a shared object"), - bfd_get_filename (abfd), - ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name)); + bfd_archive_filename (abfd), + ppc_elf_howto_table[(int) ELF32_R_TYPE (rel->r_info)]->name)); return false; } break; @@ -2340,13 +2319,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) if (! bfd_elf32_link_record_dynamic_symbol (info, h)) return false; } - if (h->plt.refcount == -1) - { - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - h->plt.refcount = 1; - } - else - h->plt.refcount++; + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + h->plt.refcount++; break; /* The following relocations don't need to propagate the @@ -2385,7 +2359,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) case R_PPC_REL14_BRNTAKEN: case R_PPC_REL32: if (h == NULL - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + || SYMBOL_REFERENCES_LOCAL (info, h)) break; /* fall through */ @@ -2426,6 +2401,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs) || ! bfd_set_section_alignment (dynobj, sreloc, 2)) return false; } + if (sec->flags & SEC_READONLY) + info->flags |= DF_TEXTREL; } sreloc->_raw_size += sizeof (Elf32_External_Rela); @@ -2481,13 +2458,7 @@ ppc_elf_gc_mark_hook (abfd, info, rel, h, sym) } else { - if (!(elf_bad_symtab (abfd) - && ELF_ST_BIND (sym->st_info) != STB_LOCAL) - && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) - && sym->st_shndx != SHN_COMMON)) - { - return bfd_section_from_elf_index (abfd, sym->st_shndx); - } + return bfd_section_from_elf_index (abfd, sym->st_shndx); } return NULL; @@ -2559,7 +2530,6 @@ ppc_elf_gc_sweep_hook (abfd, info, sec, relocs) /* 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. */ -/*ARGSUSED*/ static boolean ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) bfd *abfd; @@ -2572,7 +2542,7 @@ ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) { if (sym->st_shndx == SHN_COMMON && !info->relocateable - && sym->st_size <= (bfd_vma) bfd_get_gp_size (abfd)) + && sym->st_size <= elf_gp_size (abfd)) { /* Common symbols less than or equal to -G nn bytes are automatically put into .sdata. */ @@ -2581,21 +2551,24 @@ ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 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. */ - sdata->bss_section = ((asection *) - bfd_zalloc (abfd, sizeof (asection))); + 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; - sdata->bss_section->symbol = - (asymbol *) bfd_zalloc (abfd, sizeof (asymbol)); + 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, sizeof (asymbol *)); + (asymbol **) bfd_zalloc (abfd, amt); if (sdata->bss_section->symbol == NULL || sdata->bss_section->symbol_ptr_ptr == NULL) return false; @@ -2611,7 +2584,6 @@ ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) return true; } - /* Finish up dynamic symbol handling. We set the contents of various dynamic sections here. */ @@ -2675,6 +2647,13 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) /* 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; } } @@ -2693,15 +2672,14 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) rela.r_offset = (sgot->output_section->vma + sgot->output_offset - + (h->got.offset &~ 1)); + + (h->got.offset &~ (bfd_vma) 1)); /* If this is a -Bsymbolic link, and the symbol is defined locally, we just want to emit a RELATIVE reloc. The entry in the global offset table will already have been initialized in the relocate_section function. */ if (info->shared - && (info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) + && SYMBOL_REFERENCES_LOCAL (info, h)) { rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE); rela.r_addend = (h->root.u.def.value @@ -2710,7 +2688,7 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) } else { - BFD_ASSERT((h->got.offset & 1) == 0); + BFD_ASSERT ((h->got.offset & 1) == 0); bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT); rela.r_addend = 0; @@ -2766,7 +2744,6 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym) return true; } - /* Finish up the dynamic sections. */ @@ -2840,7 +2817,7 @@ ppc_elf_finish_dynamic_sections (output_bfd, info) if (sgot) { unsigned char *contents = sgot->contents; - bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); + bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents); if (sdyn == NULL) bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); @@ -2854,7 +2831,6 @@ ppc_elf_finish_dynamic_sections (output_bfd, info) return true; } - /* The RELOCATE_SECTION function is called by the ELF backend linker to handle the relocations for a section. @@ -2913,13 +2889,14 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, #ifdef DEBUG fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n", - bfd_get_filename (input_bfd), + bfd_archive_filename (input_bfd), bfd_section_name(input_bfd, input_section), - (long)input_section->reloc_count, + (long) input_section->reloc_count, (info->relocateable) ? " (relocatable)" : ""); #endif - if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ + if (!ppc_elf_howto_table[R_PPC_ADDR32]) + /* Initialize howto table if needed. */ ppc_elf_howto_init (); local_got_offsets = elf_local_got_offsets (input_bfd); @@ -2937,27 +2914,29 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, bfd_vma offset = rel->r_offset; bfd_vma addend = rel->r_addend; bfd_reloc_status_type r = bfd_reloc_other; - Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; - asection *sec = (asection *)0; - struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; - const char *sym_name = (const char *)0; + Elf_Internal_Sym *sym = (Elf_Internal_Sym *) 0; + asection *sec = (asection *) 0; + struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) 0; + const char *sym_name = (const char *) 0; reloc_howto_type *howto; unsigned long r_symndx; bfd_vma relocation; + int will_become_local; /* Unknown relocation handling */ - if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type]) + if ((unsigned) r_type >= (unsigned) R_PPC_max + || !ppc_elf_howto_table[(int) r_type]) { (*_bfd_error_handler) (_("%s: unknown relocation type %d"), - bfd_get_filename (input_bfd), - (int)r_type); + bfd_archive_filename (input_bfd), + (int) r_type); bfd_set_error (bfd_error_bad_value); ret = false; continue; } - howto = ppc_elf_howto_table[(int)r_type]; + howto = ppc_elf_howto_table[(int) r_type]; r_symndx = ELF32_R_SYM (rel->r_info); if (info->relocateable) @@ -2969,7 +2948,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; - if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) + if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION) { sec = local_sections[r_symndx]; addend = rel->r_addend += sec->output_offset + sym->st_value; @@ -2979,10 +2958,10 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, #ifdef DEBUG fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", howto->name, - (int)r_type, + (int) r_type, r_symndx, - (long)offset, - (long)addend); + (long) offset, + (long) addend); #endif continue; } @@ -2994,9 +2973,10 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, sec = local_sections[r_symndx]; sym_name = ""; - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); + addend = rel->r_addend; + /* Relocs to local symbols are always resolved. */ + will_become_local = 1; } else { @@ -3005,11 +2985,16 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, || h->root.type == bfd_link_hash_warning) h = (struct elf_link_hash_entry *) h->root.u.i.link; sym_name = h->root.root.string; + + /* Can this relocation be resolved immediately? */ + will_become_local = SYMBOL_REFERENCES_LOCAL (info, h); + if (h->root.type == bfd_link_hash_defined || h->root.type == bfd_link_hash_defweak) { sec = h->root.u.def.section; - if ((r_type == R_PPC_PLT32 + if (((r_type == R_PPC_PLT32 + || r_type == R_PPC_PLTREL24) && splt != NULL && h->plt.offset != (bfd_vma) -1) || (r_type == R_PPC_LOCAL24PC @@ -3019,14 +3004,9 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, || r_type == R_PPC_GOT16_HI || r_type == R_PPC_GOT16_HA) && elf_hash_table (info)->dynamic_sections_created - && (! info->shared - || (! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) + && (! info->shared || ! will_become_local)) || (info->shared - && ((! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0) + && ! will_become_local && ((input_section->flags & SEC_ALLOC) != 0 /* Testing SEC_DEBUGGING here may be wrong. It's here to avoid a crash when @@ -3044,7 +3024,6 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, || r_type == R_PPC_ADDR14 || r_type == R_PPC_ADDR14_BRTAKEN || r_type == R_PPC_ADDR14_BRNTAKEN - || r_type == R_PPC_PLTREL24 || r_type == R_PPC_COPY || r_type == R_PPC_GLOB_DAT || r_type == R_PPC_JMP_SLOT @@ -3078,13 +3057,13 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, relocation = 0; } else if (sec->output_section == NULL) - { + { (*_bfd_error_handler) (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), - bfd_get_filename (input_bfd), h->root.root.string, + bfd_archive_filename (input_bfd), h->root.root.string, bfd_get_section_name (input_bfd, input_section)); relocation = 0; - } + } else relocation = (h->root.u.def.value + sec->output_section->vma @@ -3092,13 +3071,14 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, } else if (h->root.type == bfd_link_hash_undefweak) relocation = 0; - else if (info->shared && !info->symbolic + else if (info->shared + && (!info->symbolic || info->allow_shlib_undefined) && !info->no_undefined && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) relocation = 0; else { - if (! (*info->callbacks->undefined_symbol)(info, + if (! (*info->callbacks->undefined_symbol) (info, h->root.root.string, input_bfd, input_section, @@ -3111,19 +3091,22 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, } } - switch ((int)r_type) + switch ((int) r_type) { default: (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"), - bfd_get_filename (input_bfd), - (int)r_type, sym_name); + bfd_archive_filename (input_bfd), + (int) r_type, sym_name); bfd_set_error (bfd_error_bad_value); ret = false; continue; + case (int) R_PPC_NONE: + continue; + /* Relocations that need no special processing. */ - case (int)R_PPC_LOCAL24PC: + case (int) R_PPC_LOCAL24PC: /* It makes no sense to point a local relocation at a symbol not in this object. */ if (h != NULL @@ -3144,29 +3127,29 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, /* Relocations that may need to be propagated if this is a shared object. */ - case (int)R_PPC_REL24: - case (int)R_PPC_REL32: - case (int)R_PPC_REL14: + case (int) R_PPC_REL24: + case (int) R_PPC_REL32: + case (int) R_PPC_REL14: /* 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) + || 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 (int)R_PPC_NONE: - case (int)R_PPC_ADDR32: - case (int)R_PPC_ADDR24: - case (int)R_PPC_ADDR16: - case (int)R_PPC_ADDR16_LO: - case (int)R_PPC_ADDR16_HI: - case (int)R_PPC_ADDR16_HA: - case (int)R_PPC_ADDR14: - case (int)R_PPC_UADDR32: - case (int)R_PPC_UADDR16: - if (info->shared) + case (int) R_PPC_ADDR32: + case (int) R_PPC_ADDR24: + case (int) R_PPC_ADDR16: + case (int) R_PPC_ADDR16_LO: + case (int) R_PPC_ADDR16_HI: + case (int) R_PPC_ADDR16_HA: + case (int) R_PPC_ADDR14: + case (int) R_PPC_UADDR32: + case (int) R_PPC_UADDR16: + if (info->shared && r_symndx != 0) { Elf_Internal_Rela outrel; boolean skip; @@ -3202,22 +3185,11 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, skip = false; - if (elf_section_data (input_section)->stab_info == NULL) - outrel.r_offset = rel->r_offset; - else - { - bfd_vma off; - - off = (_bfd_stab_section_offset - (output_bfd, &elf_hash_table (info)->stab_info, - input_section, - &elf_section_data (input_section)->stab_info, - rel->r_offset)); - if (off == (bfd_vma) -1) - skip = true; - outrel.r_offset = off; - } - + outrel.r_offset = + _bfd_elf_section_offset (output_bfd, info, input_section, + rel->r_offset); + if (outrel.r_offset == (bfd_vma) -1) + skip = true; outrel.r_offset += (input_section->output_section->vma + input_section->output_offset); @@ -3225,12 +3197,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, memset (&outrel, 0, sizeof outrel); /* h->dynindx may be -1 if this symbol was marked to become local. */ - else if (h != NULL - && ((! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) + else if (! will_become_local) { - BFD_ASSERT (h->dynindx != -1); outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); outrel.r_addend = rel->r_addend; } @@ -3267,11 +3235,11 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, osec = sec->output_section; indx = elf_section_data (osec)->dynindx; - BFD_ASSERT(indx > 0); + BFD_ASSERT (indx > 0); #ifdef DEBUG if (indx <= 0) { - printf("indx=%d section=%s flags=%08x name=%s\n", + printf ("indx=%d section=%s flags=%08x name=%s\n", indx, osec->name, osec->flags, h->root.root.string); } @@ -3312,32 +3280,32 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; /* branch taken prediction relocations */ - case (int)R_PPC_ADDR14_BRTAKEN: - case (int)R_PPC_REL14_BRTAKEN: + case (int) R_PPC_ADDR14_BRTAKEN: + case (int) R_PPC_REL14_BRTAKEN: insn = bfd_get_32 (output_bfd, contents + offset); if ((relocation - offset) & 0x8000) insn &= ~BRANCH_PREDICT_BIT; else insn |= BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, insn, contents + offset); + bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); break; /* branch not taken predicition relocations */ - case (int)R_PPC_ADDR14_BRNTAKEN: - case (int)R_PPC_REL14_BRNTAKEN: + case (int) R_PPC_ADDR14_BRNTAKEN: + case (int) R_PPC_REL14_BRNTAKEN: insn = bfd_get_32 (output_bfd, contents + offset); if ((relocation - offset) & 0x8000) insn |= BRANCH_PREDICT_BIT; else insn &= ~BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, insn, contents + offset); + bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); break; /* GOT16 relocations */ - case (int)R_PPC_GOT16: - case (int)R_PPC_GOT16_LO: - case (int)R_PPC_GOT16_HI: - case (int)R_PPC_GOT16_HA: + case (int) R_PPC_GOT16: + case (int) R_PPC_GOT16_LO: + case (int) R_PPC_GOT16_HI: + case (int) R_PPC_GOT16_HA: /* Relocation is to the entry for this symbol in the global offset table. */ BFD_ASSERT (sgot != NULL); @@ -3351,8 +3319,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, if (! elf_hash_table (info)->dynamic_sections_created || (info->shared - && (info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + && SYMBOL_REFERENCES_LOCAL (info, h))) { /* This is actually a static link, or it is a -Bsymbolic link and the symbol is defined @@ -3425,7 +3392,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; /* Indirect .sdata relocation */ - case (int)R_PPC_EMB_SDAI16: + case (int) R_PPC_EMB_SDAI16: BFD_ASSERT (sdata != NULL); relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, sdata, h, relocation, rel, @@ -3433,7 +3400,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; /* Indirect .sdata2 relocation */ - case (int)R_PPC_EMB_SDA2I16: + case (int) R_PPC_EMB_SDA2I16: BFD_ASSERT (sdata2 != NULL); relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, sdata2, h, relocation, rel, @@ -3444,8 +3411,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, section, not the actual VMA. This is appropriate when generating an embedded ELF object, for which the .got section acts like the AIX .toc section. */ - case (int)R_PPC_TOC16: /* phony GOT16 relocations */ - BFD_ASSERT (sec != (asection *)0); + case (int) 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) @@ -3453,7 +3420,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, addend -= sec->output_section->vma + sec->output_offset + 0x8000; break; - case (int)R_PPC_PLTREL24: + case (int) R_PPC_PLTREL24: /* Relocation is to the entry for this symbol in the procedure linkage table. */ BFD_ASSERT (h != NULL); @@ -3470,22 +3437,22 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, relocation = (splt->output_section->vma + splt->output_offset + h->plt.offset); - break; + break; /* relocate against _SDA_BASE_ */ - case (int)R_PPC_SDAREL16: + case (int) R_PPC_SDAREL16: { const char *name; - BFD_ASSERT (sec != (asection *)0); + BFD_ASSERT (sec != (asection *) 0); name = bfd_get_section_name (abfd, sec->output_section); if (strcmp (name, ".sdata") != 0 && strcmp (name, ".sbss") != 0) { (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_get_filename (input_bfd), + bfd_archive_filename (input_bfd), sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, + ppc_elf_howto_table[(int) r_type]->name, name); } addend -= (sdata->sym_hash->root.u.def.value @@ -3494,22 +3461,21 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, } break; - /* relocate against _SDA2_BASE_ */ - case (int)R_PPC_EMB_SDA2REL: + case (int) R_PPC_EMB_SDA2REL: { const char *name; - BFD_ASSERT (sec != (asection *)0); + BFD_ASSERT (sec != (asection *) 0); name = bfd_get_section_name (abfd, sec->output_section); if (strcmp (name, ".sdata2") != 0 && strcmp (name, ".sbss2") != 0) { (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_get_filename (input_bfd), + bfd_archive_filename (input_bfd), sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, + ppc_elf_howto_table[(int) r_type]->name, name); - + bfd_set_error (bfd_error_bad_value); ret = false; continue; @@ -3520,15 +3486,14 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, } break; - /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */ - case (int)R_PPC_EMB_SDA21: - case (int)R_PPC_EMB_RELSDA: + case (int) R_PPC_EMB_SDA21: + case (int) R_PPC_EMB_RELSDA: { const char *name; int reg; - BFD_ASSERT (sec != (asection *)0); + BFD_ASSERT (sec != (asection *) 0); name = bfd_get_section_name (abfd, sec->output_section); if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0) { @@ -3538,7 +3503,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, + sdata->sym_hash->root.u.def.section->output_offset); } - else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0) + else if (strcmp (name, ".sdata2") == 0 + || strcmp (name, ".sbss2") == 0) { reg = 2; addend -= (sdata2->sym_hash->root.u.def.value @@ -3546,7 +3512,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, + sdata2->sym_hash->root.u.def.section->output_offset); } - else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0) + else if (strcmp (name, ".PPC.EMB.sdata0") == 0 + || strcmp (name, ".PPC.EMB.sbss0") == 0) { reg = 0; } @@ -3554,9 +3521,9 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, else { (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"), - bfd_get_filename (input_bfd), + bfd_archive_filename (input_bfd), sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, + ppc_elf_howto_table[(int) r_type]->name, name); bfd_set_error (bfd_error_bad_value); @@ -3568,81 +3535,80 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, { /* fill in register field */ insn = bfd_get_32 (output_bfd, contents + offset); insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); - bfd_put_32 (output_bfd, insn, contents + offset); + bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); } } break; /* Relocate against the beginning of the section */ - case (int)R_PPC_SECTOFF: - case (int)R_PPC_SECTOFF_LO: - case (int)R_PPC_SECTOFF_HI: - BFD_ASSERT (sec != (asection *)0); + case (int) R_PPC_SECTOFF: + case (int) R_PPC_SECTOFF_LO: + case (int) R_PPC_SECTOFF_HI: + BFD_ASSERT (sec != (asection *) 0); addend -= sec->output_section->vma; break; - case (int)R_PPC_SECTOFF_HA: - BFD_ASSERT (sec != (asection *)0); + case (int) R_PPC_SECTOFF_HA: + BFD_ASSERT (sec != (asection *) 0); addend -= sec->output_section->vma; addend += ((relocation + addend) & 0x8000) << 1; break; /* Negative relocations */ - case (int)R_PPC_EMB_NADDR32: - case (int)R_PPC_EMB_NADDR16: - case (int)R_PPC_EMB_NADDR16_LO: - case (int)R_PPC_EMB_NADDR16_HI: - addend -= 2*relocation; + case (int) R_PPC_EMB_NADDR32: + case (int) R_PPC_EMB_NADDR16: + case (int) R_PPC_EMB_NADDR16_LO: + case (int) R_PPC_EMB_NADDR16_HI: + addend -= 2 * relocation; break; - case (int)R_PPC_EMB_NADDR16_HA: - addend -= 2*relocation; + case (int) R_PPC_EMB_NADDR16_HA: + addend -= 2 * relocation; addend += ((relocation + addend) & 0x8000) << 1; break; /* NOP relocation that prevents garbage collecting linkers from omitting a reference. */ - case (int)R_PPC_EMB_MRKREF: + case (int) R_PPC_EMB_MRKREF: continue; - case (int)R_PPC_COPY: - case (int)R_PPC_GLOB_DAT: - case (int)R_PPC_JMP_SLOT: - case (int)R_PPC_RELATIVE: - case (int)R_PPC_PLT32: - case (int)R_PPC_PLTREL32: - case (int)R_PPC_PLT16_LO: - case (int)R_PPC_PLT16_HI: - case (int)R_PPC_PLT16_HA: - case (int)R_PPC_EMB_RELSEC16: - case (int)R_PPC_EMB_RELST_LO: - case (int)R_PPC_EMB_RELST_HI: - case (int)R_PPC_EMB_RELST_HA: - case (int)R_PPC_EMB_BIT_FLD: + case (int) R_PPC_COPY: + case (int) R_PPC_GLOB_DAT: + case (int) R_PPC_JMP_SLOT: + case (int) R_PPC_RELATIVE: + case (int) R_PPC_PLT32: + case (int) R_PPC_PLTREL32: + case (int) R_PPC_PLT16_LO: + case (int) R_PPC_PLT16_HI: + case (int) R_PPC_PLT16_HA: + case (int) R_PPC_EMB_RELSEC16: + case (int) R_PPC_EMB_RELST_LO: + case (int) R_PPC_EMB_RELST_HI: + case (int) R_PPC_EMB_RELST_HA: + case (int) R_PPC_EMB_BIT_FLD: (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."), - bfd_get_filename (input_bfd), - ppc_elf_howto_table[ (int)r_type ]->name, + bfd_archive_filename (input_bfd), + ppc_elf_howto_table[(int) r_type]->name, sym_name); bfd_set_error (bfd_error_invalid_operation); ret = false; continue; - case (int)R_PPC_GNU_VTINHERIT: - case (int)R_PPC_GNU_VTENTRY: + case (int) R_PPC_GNU_VTINHERIT: + case (int) R_PPC_GNU_VTENTRY: /* These are no-ops in the end. */ continue; } - #ifdef DEBUG fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", howto->name, - (int)r_type, + (int) r_type, sym_name, r_symndx, - (long)offset, - (long)addend); + (long) offset, + (long) addend); #endif r = _bfd_final_link_relocate (howto, @@ -3686,7 +3652,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, name = bfd_section_name (input_bfd, sec); } - if (! (*info->callbacks->reloc_overflow)(info, + if (! (*info->callbacks->reloc_overflow) (info, name, howto->name, (bfd_vma) 0, @@ -3706,6 +3672,89 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, 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 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 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; +} #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec #define TARGET_LITTLE_NAME "elf32-powerpcle" @@ -3727,10 +3776,10 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, #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 bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data #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 @@ -3751,5 +3800,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, #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 #include "elf32-target.h"