X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf32-iq2000.c;h=0f7a75d00ae990093d94deec3efe6a76da608069;hb=49f30d83f659591d7d2b14a18dc8308b3fdb8dd5;hp=5bc51aa746ab0f36978ddffbb11d48ab4059d3ac;hpb=de52dba4abb83cdac3aae1ecdaa2c5c176b168f6;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-iq2000.c b/bfd/elf32-iq2000.c index 5bc51aa746..0f7a75d00a 100644 --- a/bfd/elf32-iq2000.c +++ b/bfd/elf32-iq2000.c @@ -1,11 +1,11 @@ /* IQ2000-specific support for 32-bit ELF. - Copyright (C) 2003, 2004 Free Software Foundation, Inc. + Copyright (C) 2003-2016 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 + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -15,10 +15,10 @@ 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. */ + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/iq2000.h" @@ -34,11 +34,11 @@ static reloc_howto_type iq2000_elf_howto_table [] = HOWTO (R_IQ2000_NONE, /* type */ 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ + 3, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ + complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_IQ2000_NONE", /* name */ FALSE, /* partial_inplace */ @@ -234,30 +234,6 @@ static reloc_howto_type iq2000_elf_vtentry_howto = 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 (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, @@ -313,7 +289,7 @@ iq2000_elf_relocate_hi16 (bfd *input_bfd, 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. */ @@ -322,13 +298,43 @@ iq2000_elf_relocate_hi16 (bfd *input_bfd, if (value & 0x8000) value += 0x10000; - value >>= 16; + value >>= 16; insn = ((insn & ~0xFFFF) | value); bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); return bfd_reloc_ok; } +static bfd_reloc_status_type +iq2000_elf_relocate_offset16 (bfd *input_bfd, + Elf_Internal_Rela *rel, + bfd_byte *contents, + bfd_vma value, + bfd_vma location) +{ + bfd_vma insn; + bfd_vma jtarget; + + insn = bfd_get_32 (input_bfd, contents + rel->r_offset); + + value += rel->r_addend; + + if (value & 3) + return bfd_reloc_dangerous; + + jtarget = (value & 0x3fffc) | (location & 0xf0000000L); + + if (jtarget != value) + return bfd_reloc_overflow; + + insn = (insn & ~0xFFFF) | ((value >> 2) & 0xFFFF); + + bfd_put_32 (input_bfd, insn, contents + rel->r_offset); + return bfd_reloc_ok; +} + +/* Map BFD reloc types to IQ2000 ELF reloc types. */ + static reloc_howto_type * iq2000_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) @@ -371,6 +377,26 @@ iq2000_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, return NULL; } +static reloc_howto_type * +iq2000_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) +{ + unsigned int i; + + for (i = 0; + i < (sizeof (iq2000_elf_howto_table) + / sizeof (iq2000_elf_howto_table[0])); + i++) + if (iq2000_elf_howto_table[i].name != NULL + && strcasecmp (iq2000_elf_howto_table[i].name, r_name) == 0) + return &iq2000_elf_howto_table[i]; + + if (strcasecmp (iq2000_elf_vtinherit_howto.name, r_name) == 0) + return &iq2000_elf_vtinherit_howto; + if (strcasecmp (iq2000_elf_vtentry_howto.name, r_name) == 0) + return &iq2000_elf_vtentry_howto; + + return NULL; +} /* Perform a single relocation. By default we use the standard BFD routines. */ @@ -409,6 +435,11 @@ iq2000_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, break; default: + if (r_type >= (unsigned int) R_IQ2000_max) + { + _bfd_error_handler (_("%B: invalid IQ2000 reloc number: %d"), abfd, r_type); + r_type = 0; + } cache_ptr->howto = & iq2000_elf_howto_table [r_type]; break; } @@ -417,7 +448,7 @@ iq2000_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, /* 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 (bfd *abfd, struct bfd_link_info *info, @@ -425,32 +456,38 @@ iq2000_elf_check_relocs (bfd *abfd, const Elf_Internal_Rela *relocs) { Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; + struct elf_link_hash_entry **sym_hashes; const Elf_Internal_Rela *rel; const Elf_Internal_Rela *rel_end; bfd_boolean changed = FALSE; - - if (info->relocatable) + + if (bfd_link_relocatable (info)) 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]; - + { + 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; + + /* PR15323, ref flags aren't set for references in the same + object. */ + h->root.non_ir_ref = 1; + } + switch (ELF32_R_TYPE (rel->r_info)) { /* This relocation describes the C++ object vtable @@ -459,19 +496,21 @@ iq2000_elf_check_relocs (bfd *abfd, 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)) + BFD_ASSERT (h != NULL); + if (h != NULL + && !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) + if (CONST_STRNEQ (sec->name, ".debug") + || CONST_STRNEQ (sec->name, ".stab") + || CONST_STRNEQ (sec->name, ".eh_frame")) { ((Elf_Internal_Rela *) rel)->r_info = ELF32_R_INFO (ELF32_R_SYM (rel->r_info), R_IQ2000_32_DEBUG); @@ -538,9 +577,6 @@ iq2000_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, Elf_Internal_Rela * rel; Elf_Internal_Rela * relend; - if (info->relocatable) - return TRUE; - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; sym_hashes = elf_sym_hashes (input_bfd); relend = relocs + input_section->reloc_count; @@ -556,52 +592,75 @@ iq2000_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, 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) { + asection *osec; + sym = local_syms + r_symndx; - sec = local_sections [r_symndx]; + osec = sec = local_sections [r_symndx]; + if ((sec->flags & SEC_MERGE) + && ELF_ST_TYPE (sym->st_info) == STT_SECTION) + /* This relocation is relative to a section symbol that is + going to be merged. Change it so that it is relative + to the merged section symbol. */ + rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, &sec, + rel->r_addend); + 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; + name = (name == NULL) ? bfd_section_name (input_bfd, osec) : name; } else { bfd_boolean unresolved_reloc; - bfd_boolean warned; + bfd_boolean warned, ignored; RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, r_symndx, symtab_hdr, sym_hashes, h, sec, relocation, - unresolved_reloc, warned); + unresolved_reloc, warned, ignored); name = h->root.root.string; } + if (sec != NULL && discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, 1, relend, howto, 0, contents); + + if (bfd_link_relocatable (info)) + continue; + switch (r_type) { case R_IQ2000_HI16: r = iq2000_elf_relocate_hi16 (input_bfd, rel, contents, relocation); break; + case R_IQ2000_OFFSET_16: + r = iq2000_elf_relocate_offset16 (input_bfd, rel, contents, relocation, + input_section->output_section->vma + + input_section->output_offset + + rel->r_offset); + break; + case R_IQ2000_PC16: rel->r_addend -= 4; /* Fall through. */ @@ -619,16 +678,16 @@ iq2000_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, switch (r) { case bfd_reloc_overflow: - r = info->callbacks->reloc_overflow + (*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->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; @@ -647,11 +706,8 @@ iq2000_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, } if (msg) - r = info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - - if (! r) - return FALSE; + (*info->callbacks->warning) (info, msg, name, input_bfd, + input_section, rel->r_offset); } } @@ -659,53 +715,25 @@ iq2000_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, } -/* Update the got entry reference counts for the section being - removed. */ - -static bfd_boolean -iq2000_elf_gc_sweep_hook (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 (asection * sec, - struct bfd_link_info * info ATTRIBUTE_UNUSED, - Elf_Internal_Rela * rel, - struct elf_link_hash_entry * h, - Elf_Internal_Sym * sym) +iq2000_elf_gc_mark_hook (asection *sec, + struct bfd_link_info *info, + Elf_Internal_Rela *rel, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) { - if (h == NULL) - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - 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; - } - } - - return NULL; + if (h != NULL) + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_IQ2000_GNU_VTINHERIT: + case R_IQ2000_GNU_VTENTRY: + return NULL; + } + + return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); } @@ -736,23 +764,6 @@ iq2000_elf_set_private_flags (bfd *abfd, flagword flags) return TRUE; } -/* Copy backend specific data from one object module to another. */ - -static bfd_boolean -iq2000_elf_copy_private_bfd_data (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. */ @@ -809,7 +820,7 @@ iq2000_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) break; } } - + /* Print out any mismatches from above. */ if (new_opt[0]) { @@ -852,7 +863,7 @@ iq2000_elf_print_private_bfd_data (bfd *abfd, void * ptr) _bfd_elf_print_private_bfd_data (abfd, ptr); flags = elf_elfheader (abfd)->e_flags; - fprintf (file, _("private flags = 0x%lx:"), (long)flags); + fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); switch (flags & EF_IQ2000_CPU_MASK) { @@ -884,14 +895,13 @@ iq2000_elf_object_p (bfd *abfd) #define ELF_MACHINE_CODE EM_IQ2000 #define ELF_MAXPAGESIZE 0x1000 -#define TARGET_BIG_SYM bfd_elf32_iq2000_vec +#define TARGET_BIG_SYM iq2000_elf32_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 @@ -899,8 +909,8 @@ iq2000_elf_object_p (bfd *abfd) #define elf_backend_can_gc_sections 1 #define bfd_elf32_bfd_reloc_type_lookup iq2000_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup iq2000_reloc_name_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