/* IQ2000-specific support for 32-bit ELF. Copyright (C) 2003, 2004 Free Software Foundation, Inc. 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. */ #include "bfd.h" #include "sysdep.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/iq2000.h" /* Forward declarations. */ /* Private relocation functions. */ static bfd_reloc_status_type iq2000_elf_relocate_hi16 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); static reloc_howto_type * iq2000_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); static void iq2000_info_to_howto_rela PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); static bfd_boolean iq2000_elf_relocate_section PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); static bfd_reloc_status_type iq2000_final_link_relocate PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma)); static bfd_boolean iq2000_elf_gc_sweep_hook PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); static asection * iq2000_elf_gc_mark_hook PARAMS ((asection *sec, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *)); static reloc_howto_type * iq2000_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); static int elf32_iq2000_machine PARAMS ((bfd *)); static bfd_boolean iq2000_elf_object_p PARAMS ((bfd *)); static bfd_boolean iq2000_elf_set_private_flags PARAMS ((bfd *, flagword)); static bfd_boolean iq2000_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); static bfd_boolean iq2000_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); static bfd_boolean iq2000_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); static bfd_boolean iq2000_elf_check_relocs PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *)); static bfd_reloc_status_type iq2000_elf_howto_hi16_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static reloc_howto_type iq2000_elf_howto_table [] = { /* This reloc does nothing. */ HOWTO (R_IQ2000_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_IQ2000_NONE", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* A 16 bit absolute relocation. */ HOWTO (R_IQ2000_16, /* 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_IQ2000_16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* A 32 bit absolute relocation. */ HOWTO (R_IQ2000_32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 31, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_IQ2000_32", /* name */ FALSE, /* partial_inplace */ 0x00000000, /* src_mask */ 0x7fffffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* 26 bit branch address. */ HOWTO (R_IQ2000_26, /* type */ 2, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ /* This needs complex overflow detection, because the upper four bits must match the PC. */ bfd_elf_generic_reloc, /* special_function */ "R_IQ2000_26", /* name */ FALSE, /* partial_inplace */ 0x00000000, /* src_mask */ 0x03ffffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* 16 bit PC relative reference. */ HOWTO (R_IQ2000_PC16, /* type */ 2, /* 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_IQ2000_PC16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ /* high 16 bits of symbol value. */ HOWTO (R_IQ2000_HI16, /* type */ 16, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 15, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ iq2000_elf_howto_hi16_reloc, /* special_function */ "R_IQ2000_HI16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0x7fff, /* dst_mask */ FALSE), /* pcrel_offset */ /* Low 16 bits of symbol value. */ HOWTO (R_IQ2000_LO16, /* type */ 0, /* rightshift */ 2, /* 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_IQ2000_LO16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* 16-bit jump offset. */ HOWTO (R_IQ2000_OFFSET_16, /* type */ 2, /* rightshift */ 2, /* 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_IQ2000_OFFSET_16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* 21-bit jump offset. */ HOWTO (R_IQ2000_OFFSET_21, /* type */ 2, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 21, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_IQ2000_OFFSET_21", /* name */ FALSE, /* partial_inplace */ 0x000000, /* src_mask */ 0x1fffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* unsigned high 16 bits of value. */ HOWTO (R_IQ2000_OFFSET_21, /* type */ 16, /* rightshift */ 2, /* 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_IQ2000_UHI16", /* name */ FALSE, /* partial_inplace */ 0x0000, /* src_mask */ 0x7fff, /* dst_mask */ FALSE), /* pcrel_offset */ /* A 32 bit absolute debug relocation. */ HOWTO (R_IQ2000_32_DEBUG, /* 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_IQ2000_32", /* name */ FALSE, /* partial_inplace */ 0x00000000, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ }; /* GNU extension to record C++ vtable hierarchy. */ static reloc_howto_type iq2000_elf_vtinherit_howto = HOWTO (R_IQ2000_GNU_VTINHERIT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_IQ2000_GNU_VTINHERIT", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE); /* pcrel_offset */ /* GNU extension to record C++ vtable member usage. */ static reloc_howto_type iq2000_elf_vtentry_howto = HOWTO (R_IQ2000_GNU_VTENTRY, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_IQ2000_GNU_VTENTRY", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE); /* pcrel_offset */ /* Map BFD reloc types to IQ2000 ELF reloc types. */ struct iq2000_reloc_map { bfd_reloc_code_real_type bfd_reloc_val; unsigned int iq2000_reloc_val; }; static const struct iq2000_reloc_map iq2000_reloc_map [] = { { BFD_RELOC_NONE, R_IQ2000_NONE }, { BFD_RELOC_16, R_IQ2000_16 }, { BFD_RELOC_32, R_IQ2000_32 }, { BFD_RELOC_MIPS_JMP, R_IQ2000_26 }, { BFD_RELOC_16_PCREL_S2, R_IQ2000_PC16 }, { BFD_RELOC_HI16, R_IQ2000_HI16 }, { BFD_RELOC_LO16, R_IQ2000_LO16 }, { BFD_RELOC_IQ2000_OFFSET_16,R_IQ2000_OFFSET_16 }, { BFD_RELOC_IQ2000_OFFSET_21,R_IQ2000_OFFSET_21 }, { BFD_RELOC_IQ2000_UHI16, R_IQ2000_UHI16 }, { BFD_RELOC_VTABLE_INHERIT, R_IQ2000_GNU_VTINHERIT }, { BFD_RELOC_VTABLE_ENTRY, R_IQ2000_GNU_VTENTRY }, }; static bfd_reloc_status_type iq2000_elf_howto_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd, error_message) bfd *abfd ATTRIBUTE_UNUSED; arelent *reloc_entry; asymbol *symbol; PTR data; asection *input_section; bfd *output_bfd; char **error_message ATTRIBUTE_UNUSED; { bfd_reloc_status_type ret; bfd_vma relocation; /* If we're relocating, and this an external symbol, we don't want to change anything. */ if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } 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; /* if %lo will have sign-extension, compensate by add 0x10000 to hi portion */ if (relocation & 0x8000) reloc_entry->addend += 0x10000; /* Now do the reloc in the usual way. */ ret = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd, error_message); /* put it back the way it was */ if (relocation & 0x8000) reloc_entry->addend -= 0x10000; return ret; } static bfd_reloc_status_type iq2000_elf_relocate_hi16 (input_bfd, relhi, contents, value) bfd *input_bfd; Elf_Internal_Rela *relhi; bfd_byte *contents; bfd_vma value; { bfd_vma insn; insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); value += relhi->r_addend; value &= 0x7fffffff; /* mask off top-bit which is Harvard mask bit */ /* if top-bit of %lo value is on, this means that %lo will sign-propagate and so we compensate by adding 1 to %hi value */ if (value & 0x8000) value += 0x10000; value >>= 16; insn = ((insn & ~0xFFFF) | value); bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); return bfd_reloc_ok; } static reloc_howto_type * iq2000_reloc_type_lookup (abfd, code) bfd * abfd ATTRIBUTE_UNUSED; bfd_reloc_code_real_type code; { /* Note that the iq2000_elf_howto_table is indxed by the R_ constants. Thus, the order that the howto records appear in the table *must* match the order of the relocation types defined in include/elf/iq2000.h. */ switch (code) { case BFD_RELOC_NONE: return &iq2000_elf_howto_table[ (int) R_IQ2000_NONE]; case BFD_RELOC_16: return &iq2000_elf_howto_table[ (int) R_IQ2000_16]; case BFD_RELOC_32: return &iq2000_elf_howto_table[ (int) R_IQ2000_32]; case BFD_RELOC_MIPS_JMP: return &iq2000_elf_howto_table[ (int) R_IQ2000_26]; case BFD_RELOC_IQ2000_OFFSET_16: return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_16]; case BFD_RELOC_IQ2000_OFFSET_21: return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_21]; case BFD_RELOC_16_PCREL_S2: return &iq2000_elf_howto_table[ (int) R_IQ2000_PC16]; case BFD_RELOC_HI16: return &iq2000_elf_howto_table[ (int) R_IQ2000_HI16]; case BFD_RELOC_IQ2000_UHI16: return &iq2000_elf_howto_table[ (int) R_IQ2000_UHI16]; case BFD_RELOC_LO16: return &iq2000_elf_howto_table[ (int) R_IQ2000_LO16]; case BFD_RELOC_VTABLE_INHERIT: return &iq2000_elf_vtinherit_howto; case BFD_RELOC_VTABLE_ENTRY: return &iq2000_elf_vtentry_howto; default: /* Pacify gcc -Wall. */ return NULL; } return NULL; } /* Perform a single relocation. By default we use the standard BFD routines. */ static bfd_reloc_status_type iq2000_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation) reloc_howto_type * howto; bfd * input_bfd; asection * input_section; bfd_byte * contents; Elf_Internal_Rela * rel; bfd_vma relocation; { return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, rel->r_offset, relocation, rel->r_addend); } /* Set the howto pointer for a IQ2000 ELF reloc. */ static void iq2000_info_to_howto_rela (abfd, cache_ptr, dst) bfd * abfd ATTRIBUTE_UNUSED; arelent * cache_ptr; Elf_Internal_Rela * dst; { unsigned int r_type; r_type = ELF32_R_TYPE (dst->r_info); switch (r_type) { case R_IQ2000_GNU_VTINHERIT: cache_ptr->howto = & iq2000_elf_vtinherit_howto; break; case R_IQ2000_GNU_VTENTRY: cache_ptr->howto = & iq2000_elf_vtentry_howto; break; default: cache_ptr->howto = & iq2000_elf_howto_table [r_type]; break; } } /* Look through the relocs for a section during the first phase. Since we don't do .gots or .plts, we just need to consider the virtual table relocs for gc. */ static bfd_boolean iq2000_elf_check_relocs (abfd, info, sec, relocs) bfd *abfd; struct bfd_link_info *info; asection *sec; const Elf_Internal_Rela *relocs; { Elf_Internal_Shdr *symtab_hdr; struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; const Elf_Internal_Rela *rel; const Elf_Internal_Rela *rel_end; bfd_boolean changed = FALSE; if (info->relocatable) return TRUE; symtab_hdr = &elf_tdata (abfd)->symtab_hdr; sym_hashes = elf_sym_hashes (abfd); sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); if (!elf_bad_symtab (abfd)) sym_hashes_end -= symtab_hdr->sh_info; rel_end = relocs + sec->reloc_count; for (rel = relocs; rel < rel_end; rel++) { struct elf_link_hash_entry *h; unsigned long r_symndx; 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]; switch (ELF32_R_TYPE (rel->r_info)) { /* This relocation describes the C++ object vtable hierarchy. Reconstruct it for later use during GC. */ case R_IQ2000_GNU_VTINHERIT: if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) return FALSE; break; /* This relocation describes which C++ vtable entries are actually used. Record for later use during GC. */ case R_IQ2000_GNU_VTENTRY: if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) return FALSE; break; case R_IQ2000_32: /* For debug section, change to special harvard-aware relocations */ if (memcmp (sec->name, ".debug", 6) == 0 || memcmp (sec->name, ".stab", 5) == 0 || memcmp (sec->name, ".eh_frame", 9) == 0) { ((Elf_Internal_Rela *) rel)->r_info = ELF32_R_INFO (ELF32_R_SYM (rel->r_info), R_IQ2000_32_DEBUG); changed = TRUE; } break; } } if (changed) /* Note that we've changed relocs, otherwise if !info->keep_memory we'll free the relocs and lose our changes. */ (const Elf_Internal_Rela *) (elf_section_data (sec)->relocs) = relocs; return TRUE; } /* Relocate a IQ2000 ELF section. There is some attempt to make this function usable for many architectures, both USE_REL and USE_RELA ['twould be nice if such a critter existed], if only to serve as a learning tool. The RELOCATE_SECTION function is called by the new 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 adjusting the section contents as necessary, and (if using Rela relocs and generating a relocatable output file) adjusting the reloc addend as necessary. This function does not have to worry about setting the reloc address or the reloc symbol index. LOCAL_SYMS is a pointer to the swapped in local symbols. LOCAL_SECTIONS is an array giving the section in the input file corresponding to the st_shndx field of each local symbol. The global hash table entry for the global symbols can be found via elf_sym_hashes (input_bfd). When generating relocatable output, this function must handle STB_LOCAL/STT_SECTION symbols specially. The output symbol is going to be the section symbol corresponding to the output section, which means that the addend must be adjusted accordingly. */ static bfd_boolean iq2000_elf_relocate_section (output_bfd, info, input_bfd, input_section, contents, relocs, local_syms, local_sections) bfd * output_bfd ATTRIBUTE_UNUSED; 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; Elf_Internal_Rela * rel; Elf_Internal_Rela * relend; symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; sym_hashes = elf_sym_hashes (input_bfd); relend = relocs + input_section->reloc_count; for (rel = relocs; rel < relend; rel ++) { reloc_howto_type * howto; unsigned long r_symndx; Elf_Internal_Sym * sym; asection * sec; struct elf_link_hash_entry * h; bfd_vma relocation; bfd_reloc_status_type r; const char * name = NULL; int r_type; r_type = ELF32_R_TYPE (rel->r_info); if ( r_type == R_IQ2000_GNU_VTINHERIT || r_type == R_IQ2000_GNU_VTENTRY) continue; r_symndx = ELF32_R_SYM (rel->r_info); /* This is a final link. */ howto = iq2000_elf_howto_table + ELF32_R_TYPE (rel->r_info); h = NULL; sym = NULL; sec = NULL; if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; sec = local_sections [r_symndx]; relocation = (sec->output_section->vma + sec->output_offset + sym->st_value); name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; #ifdef DEBUG fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", sec->name, name, sym->st_name, sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend); #endif } else { bfd_boolean unresolved_reloc; bfd_boolean warned; RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, r_symndx, symtab_hdr, sym_hashes, h, sec, relocation, unresolved_reloc, warned); name = h->root.root.string; } switch (r_type) { case R_IQ2000_HI16: r = iq2000_elf_relocate_hi16 (input_bfd, rel, contents, relocation); break; case R_IQ2000_PC16: rel->r_addend -= 4; /* Fall through. */ default: r = iq2000_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation); break; } if (r != bfd_reloc_ok) { const char * msg = (const char *) NULL; switch (r) { case bfd_reloc_overflow: r = info->callbacks->reloc_overflow (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, input_bfd, input_section, rel->r_offset); break; case bfd_reloc_undefined: r = info->callbacks->undefined_symbol (info, name, input_bfd, input_section, rel->r_offset, TRUE); break; case bfd_reloc_outofrange: msg = _("internal error: out of range error"); break; case bfd_reloc_notsupported: msg = _("internal error: unsupported relocation error"); break; case bfd_reloc_dangerous: msg = _("internal error: dangerous relocation"); break; default: msg = _("internal error: unknown error"); break; } if (msg) r = info->callbacks->warning (info, msg, name, input_bfd, input_section, rel->r_offset); if (! r) return FALSE; } } return TRUE; } /* Update the got entry reference counts for the section being removed. */ static bfd_boolean iq2000_elf_gc_sweep_hook (abfd, info, sec, relocs) bfd * abfd ATTRIBUTE_UNUSED; struct bfd_link_info * info ATTRIBUTE_UNUSED; asection * sec ATTRIBUTE_UNUSED; const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED; { return TRUE; } /* Return the section that should be marked against GC for a given relocation. */ static asection * iq2000_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_IQ2000_GNU_VTINHERIT: case R_IQ2000_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; } /* Return the MACH for an e_flags value. */ static int elf32_iq2000_machine (abfd) bfd *abfd; { switch (elf_elfheader (abfd)->e_flags & EF_IQ2000_CPU_MASK) { case EF_IQ2000_CPU_IQ2000: return bfd_mach_iq2000; case EF_IQ2000_CPU_IQ10: return bfd_mach_iq10; } return bfd_mach_iq2000; } /* Function to set the ELF flag bits. */ static bfd_boolean iq2000_elf_set_private_flags (abfd, flags) bfd *abfd; flagword flags; { elf_elfheader (abfd)->e_flags = flags; elf_flags_init (abfd) = TRUE; return TRUE; } /* Copy backend specific data from one object module to another. */ static bfd_boolean iq2000_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 bfd_boolean iq2000_elf_merge_private_bfd_data (ibfd, obfd) bfd *ibfd; bfd *obfd; { flagword old_flags, old_partial; flagword new_flags, new_partial; bfd_boolean error = FALSE; char new_opt[80]; char old_opt[80]; new_opt[0] = old_opt[0] = '\0'; new_flags = elf_elfheader (ibfd)->e_flags; old_flags = elf_elfheader (obfd)->e_flags; #ifdef DEBUG (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", bfd_get_filename (ibfd)); #endif if (!elf_flags_init (obfd)) { /* First call, no flags set. */ elf_flags_init (obfd) = TRUE; elf_elfheader (obfd)->e_flags = new_flags; } else if (new_flags == old_flags) /* Compatible flags are ok. */ ; else /* Possibly incompatible flags. */ { /* Warn if different cpu is used (allow a specific cpu to override the generic cpu). */ new_partial = (new_flags & EF_IQ2000_CPU_MASK); old_partial = (old_flags & EF_IQ2000_CPU_MASK); if (new_partial == old_partial) ; else { switch (new_partial) { default: strcat (new_opt, " -m2000"); break; case EF_IQ2000_CPU_IQ2000: strcat (new_opt, " -m2000"); break; case EF_IQ2000_CPU_IQ10: strcat (new_opt, " -m10"); break; } switch (old_partial) { default: strcat (old_opt, " -m2000"); break; case EF_IQ2000_CPU_IQ2000: strcat (old_opt, " -m2000"); break; case EF_IQ2000_CPU_IQ10: strcat (old_opt, " -m10"); break; } } /* Print out any mismatches from above. */ if (new_opt[0]) { error = TRUE; (*_bfd_error_handler) (_("%s: compiled with %s and linked with modules compiled with %s"), bfd_get_filename (ibfd), new_opt, old_opt); } new_flags &= ~ EF_IQ2000_ALL_FLAGS; old_flags &= ~ EF_IQ2000_ALL_FLAGS; /* 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_get_filename (ibfd), (long)new_flags, (long)old_flags); } } if (error) bfd_set_error (bfd_error_bad_value); return !error; } static bfd_boolean iq2000_elf_print_private_bfd_data (abfd, ptr) bfd *abfd; PTR ptr; { FILE *file = (FILE *) ptr; flagword flags; BFD_ASSERT (abfd != NULL && ptr != NULL); /* Print normal ELF private data. */ _bfd_elf_print_private_bfd_data (abfd, ptr); flags = elf_elfheader (abfd)->e_flags; fprintf (file, _("private flags = 0x%lx:"), (long)flags); switch (flags & EF_IQ2000_CPU_MASK) { default: break; case EF_IQ2000_CPU_IQ2000: fprintf (file, " -m2000"); break; case EF_IQ2000_CPU_IQ10: fprintf (file, " -m10"); break; } fputc ('\n', file); return TRUE; } static bfd_boolean iq2000_elf_object_p (abfd) bfd *abfd; { /* Irix 5 and 6 is broken. Object file symbol tables are not always sorted correctly such that local symbols precede global symbols, and the sh_info field in the symbol table is not always right. */ elf_bad_symtab (abfd) = TRUE; bfd_default_set_arch_mach (abfd, bfd_arch_iq2000, elf32_iq2000_machine (abfd)); return TRUE; } #define ELF_ARCH bfd_arch_iq2000 #define ELF_MACHINE_CODE EM_IQ2000 #define ELF_MAXPAGESIZE 0x1000 #define TARGET_BIG_SYM bfd_elf32_iq2000_vec #define TARGET_BIG_NAME "elf32-iq2000" #define elf_info_to_howto_rel NULL #define elf_info_to_howto iq2000_info_to_howto_rela #define elf_backend_relocate_section iq2000_elf_relocate_section #define elf_backend_gc_mark_hook iq2000_elf_gc_mark_hook #define elf_backend_gc_sweep_hook iq2000_elf_gc_sweep_hook #define elf_backend_check_relocs iq2000_elf_check_relocs #define elf_backend_object_p iq2000_elf_object_p #define elf_backend_rela_normal 1 #define elf_backend_can_gc_sections 1 #define bfd_elf32_bfd_reloc_type_lookup iq2000_reloc_type_lookup #define bfd_elf32_bfd_set_private_flags iq2000_elf_set_private_flags #define bfd_elf32_bfd_copy_private_bfd_data iq2000_elf_copy_private_bfd_data #define bfd_elf32_bfd_merge_private_bfd_data iq2000_elf_merge_private_bfd_data #define bfd_elf32_bfd_print_private_bfd_data iq2000_elf_print_private_bfd_data #include "elf32-target.h"