X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-fr30.c;h=14a42e7db50549d3157ea681ac306d47ef16b35f;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=387789c77a22fe278896fabfc71e30f2f2434ab6;hpb=82ef568c2e7ead6ebed8d963a8700f591177aacb;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-fr30.c b/bfd/elf32-fr30.c index 387789c77a..14a42e7db5 100644 --- a/bfd/elf32-fr30.c +++ b/bfd/elf32-fr30.c @@ -1,207 +1,248 @@ /* FR30-specific support for 32-bit ELF. - Copyright (C) 1998 Free Software Foundation, Inc. + Copyright (C) 1998-2020 Free Software Foundation, Inc. -This file is part of BFD, the Binary File Descriptor library. + 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 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 3 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. + 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. */ + 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., 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/fr30.h" /* Forward declarations. */ -static bfd_reloc_status_type fr30_elf_i20_reloc - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static reloc_howto_type * fr30_reloc_type_lookup - PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); -static void fr30_info_to_howto_rela - PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); -static boolean fr30_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 +fr30_elf_i20_reloc (bfd *, arelent *, asymbol *, void * data, + asection *, bfd *, char **error_message); +static bfd_reloc_status_type +fr30_elf_i32_reloc (bfd *, arelent *, asymbol *, void *, + asection *, bfd *, char **); static reloc_howto_type fr30_elf_howto_table [] = { /* This reloc does nothing. */ HOWTO (R_FR30_NONE, /* type */ 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ + 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_FR30_NONE", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* An 8 bit absolute relocation. */ HOWTO (R_FR30_8, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 8, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 4, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_FR30_8", /* name */ - true, /* partial_inplace */ - 0x0ff0, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x0ff0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A 20 bit absolute relocation. */ HOWTO (R_FR30_20, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 20, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ fr30_elf_i20_reloc, /* special_function */ "R_FR30_20", /* name */ - true, /* partial_inplace */ - 0x00f0ffff, /* src_mask */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ 0x00f0ffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A 32 bit absolute relocation. */ HOWTO (R_FR30_32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_FR30_32", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 32 bit into 48 bits absolute relocation. */ + HOWTO (R_FR30_48, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + fr30_elf_i32_reloc, /* special_function */ + "R_FR30_48", /* name */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A 6 bit absolute relocation. */ HOWTO (R_FR30_6_IN_4, /* type */ 2, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 6, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 4, /* bitpos */ complain_overflow_unsigned, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_FR30_6_IN_4", /* name */ - true, /* partial_inplace */ - 0x00f0, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x00f0, /* dst_mask */ - false), /* pcrel_offset */ - + FALSE), /* pcrel_offset */ + /* An 8 bit absolute relocation. */ HOWTO (R_FR30_8_IN_8, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 8, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 4, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc,/* special_function */ "R_FR30_8_IN_8", /* name */ - true, /* partial_inplace */ - 0x0ff0, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x0ff0, /* dst_mask */ - false), /* pcrel_offset */ - + FALSE), /* pcrel_offset */ + /* A 9 bit absolute relocation. */ HOWTO (R_FR30_9_IN_8, /* type */ 1, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 9, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 4, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc,/* special_function */ "R_FR30_9_IN_8", /* name */ - true, /* partial_inplace */ - 0x0ff0, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x0ff0, /* dst_mask */ - false), /* pcrel_offset */ - + FALSE), /* pcrel_offset */ + /* A 10 bit absolute relocation. */ HOWTO (R_FR30_10_IN_8, /* type */ 2, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 10, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 4, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ bfd_elf_generic_reloc,/* special_function */ "R_FR30_10_IN_8", /* name */ - true, /* partial_inplace */ - 0x0ff0, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x0ff0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A PC relative 9 bit relocation, right shifted by 1. */ HOWTO (R_FR30_9_PCREL, /* type */ 1, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 9, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + bfd_elf_generic_reloc, /* special_function */ "R_FR30_9_PCREL", /* name */ - false, /* partial_inplace */ - 0x00ff, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x00ff, /* dst_mask */ - true), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A PC relative 12 bit relocation, right shifted by 1. */ HOWTO (R_FR30_12_PCREL, /* type */ 1, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 12, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ + bfd_elf_generic_reloc, /* special_function */ "R_FR30_12_PCREL", /* name */ - false, /* partial_inplace */ - 0x07ff, /* src_mask */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ 0x07ff, /* dst_mask */ - true), /* pcrel_offset */ + FALSE), /* pcrel_offset */ + /* GNU extension to record C++ vtable hierarchy */ + HOWTO (R_FR30_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_FR30_GNU_VTINHERIT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* GNU extension to record C++ vtable member usage */ + HOWTO (R_FR30_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 */ + _bfd_elf_rel_vtable_reloc_fn, /* special_function */ + "R_FR30_GNU_VTENTRY", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ }; /* Utility to actually perform an R_FR30_20 reloc. */ static bfd_reloc_status_type -fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data, - input_section, output_bfd, error_message) - bfd * abfd; - arelent * reloc_entry; - asymbol * symbol; - PTR data; - asection * input_section; - bfd * output_bfd; - char ** error_message; +fr30_elf_i20_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + void * data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) { - bfd_vma relocation; + bfd_vma relocation; unsigned long x; - + /* This part is from bfd_elf_generic_reloc. */ if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0 @@ -214,7 +255,7 @@ fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data, if (output_bfd != NULL) /* FIXME: See bfd_perform_relocation. Is this right? */ - return bfd_reloc_continue; + return bfd_reloc_ok; relocation = symbol->value @@ -222,73 +263,211 @@ fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data, + symbol->section->output_offset + reloc_entry->addend; - if (relocation > ((1U << 20) - 1)) + if (relocation > (((bfd_vma) 1 << 20) - 1)) return bfd_reloc_overflow; - x = bfd_get_32 (abfd, data + reloc_entry->address); + x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); - bfd_put_32 (abfd, x, data + reloc_entry->address); + bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address); return bfd_reloc_ok; } + +/* Utility to actually perform a R_FR30_48 reloc. */ + +static bfd_reloc_status_type +fr30_elf_i32_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + void * data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation; + /* This part is from bfd_elf_generic_reloc. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && (! reloc_entry->howto->partial_inplace + || reloc_entry->addend == 0)) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + if (output_bfd != NULL) + /* FIXME: See bfd_perform_relocation. Is this right? */ + return bfd_reloc_ok; + + relocation = + symbol->value + + symbol->section->output_section->vma + + symbol->section->output_offset + + reloc_entry->addend; + + bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2); + + return bfd_reloc_ok; +} /* Map BFD reloc types to FR30 ELF reloc types. */ struct fr30_reloc_map { - unsigned int bfd_reloc_val; + bfd_reloc_code_real_type bfd_reloc_val; unsigned int fr30_reloc_val; }; static const struct fr30_reloc_map fr30_reloc_map [] = { - { BFD_RELOC_NONE, R_FR30_NONE }, - { BFD_RELOC_8, R_FR30_8 }, - { BFD_RELOC_FR30_20, R_FR30_20 }, - { BFD_RELOC_32, R_FR30_32 }, + { BFD_RELOC_NONE, R_FR30_NONE }, + { BFD_RELOC_8, R_FR30_8 }, + { BFD_RELOC_FR30_20, R_FR30_20 }, + { BFD_RELOC_32, R_FR30_32 }, + { BFD_RELOC_FR30_48, R_FR30_48 }, { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 }, { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 }, { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 }, { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 }, { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL }, { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL }, + { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT }, + { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY }, }; static reloc_howto_type * -fr30_reloc_type_lookup (abfd, code) - bfd * abfd; - bfd_reloc_code_real_type code; +fr30_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { unsigned int i; for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]); - --i;) + i--;) if (fr30_reloc_map [i].bfd_reloc_val == code) return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val]; - + + return NULL; +} + +static reloc_howto_type * +fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) +{ + unsigned int i; + + for (i = 0; + i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]); + i++) + if (fr30_elf_howto_table[i].name != NULL + && strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0) + return &fr30_elf_howto_table[i]; + return NULL; } /* Set the howto pointer for an FR30 ELF reloc. */ -static void -fr30_info_to_howto_rela (abfd, cache_ptr, dst) - bfd * abfd; - arelent * cache_ptr; - Elf32_Internal_Rela * dst; +static bfd_boolean +fr30_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_Internal_Rela *dst) { unsigned int r_type; r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_FR30_max); + if (r_type >= (unsigned int) R_FR30_max) + { + /* xgettext:c-format */ + _bfd_error_handler (_("%pB: unsupported relocation type %#x"), + abfd, r_type); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } cache_ptr->howto = & fr30_elf_howto_table [r_type]; + return TRUE; +} + +/* Perform a single relocation. By default we use the standard BFD + routines, but a few relocs, we have to do them ourselves. */ + +static bfd_reloc_status_type +fr30_final_link_relocate (reloc_howto_type *howto, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + Elf_Internal_Rela *rel, + bfd_vma relocation) +{ + bfd_reloc_status_type r = bfd_reloc_ok; + bfd_vma x; + bfd_signed_vma srel; + + switch (howto->type) + { + case R_FR30_20: + contents += rel->r_offset; + relocation += rel->r_addend; + + if (relocation > ((1 << 20) - 1)) + return bfd_reloc_overflow; + + x = bfd_get_32 (input_bfd, contents); + x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); + bfd_put_32 (input_bfd, x, contents); + break; + + case R_FR30_48: + contents += rel->r_offset + 2; + relocation += rel->r_addend; + bfd_put_32 (input_bfd, relocation, contents); + break; + + case R_FR30_9_PCREL: + contents += rel->r_offset + 1; + srel = (bfd_signed_vma) relocation; + srel += rel->r_addend; + srel -= rel->r_offset; + srel -= 2; /* Branch instructions add 2 to the PC... */ + srel -= (input_section->output_section->vma + + input_section->output_offset); + + if (srel & 1) + return bfd_reloc_outofrange; + if (srel > ((1 << 8) - 1) || (srel < - (1 << 8))) + return bfd_reloc_overflow; + + bfd_put_8 (input_bfd, srel >> 1, contents); + break; + + case R_FR30_12_PCREL: + contents += rel->r_offset; + srel = (bfd_signed_vma) relocation; + srel += rel->r_addend; + srel -= rel->r_offset; + srel -= 2; /* Branch instructions add 2 to the PC... */ + srel -= (input_section->output_section->vma + + input_section->output_offset); + + if (srel & 1) + return bfd_reloc_outofrange; + if (srel > ((1 << 11) - 1) || (srel < - (1 << 11))) + return bfd_reloc_overflow; + + x = bfd_get_16 (input_bfd, contents); + x = (x & 0xf800) | ((srel >> 1) & 0x7ff); + bfd_put_16 (input_bfd, x, contents); + break; + + default: + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + } + + return r; } /* Relocate an FR30 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. @@ -298,7 +477,7 @@ fr30_info_to_howto_rela (abfd, cache_ptr, dst) zero. This function is responsible for adjusting the section contents as - necessary, and (if using Rela relocs and generating a relocateable + 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 @@ -312,211 +491,229 @@ fr30_info_to_howto_rela (abfd, cache_ptr, dst) The global hash table entry for the global symbols can be found via elf_sym_hashes (input_bfd). - When generating relocateable output, this function must handle + 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 boolean -fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd * output_bfd; - struct bfd_link_info * info; - bfd * input_bfd; - asection * input_section; - bfd_byte * contents; - Elf_Internal_Rela * relocs; - Elf_Internal_Sym * local_syms; - asection ** local_sections; +static bfd_boolean +fr30_elf_relocate_section (bfd *output_bfd, + struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + Elf_Internal_Rela *relocs, + Elf_Internal_Sym *local_syms, + asection **local_sections) { - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - Elf_Internal_Rela * rel; - Elf_Internal_Rela * relend; + 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; + 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; + int r_type; + + r_type = ELF32_R_TYPE (rel->r_info); + + if ( r_type == R_FR30_GNU_VTINHERIT + || r_type == R_FR30_GNU_VTENTRY) + continue; r_symndx = ELF32_R_SYM (rel->r_info); - if (info->relocateable) - { - /* This is a relocateable link. We don't have to change - anything, unless the reloc is against a section symbol, - in which case we have to adjust according to where the - section symbol winds up in the output section. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sec = local_sections [r_symndx]; - rel->r_addend += sec->output_offset + sym->st_value; - } - } - - continue; - } - - /* This is a final link. */ howto = fr30_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); - + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); + 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; -#if 0 - 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 + name = name == NULL ? bfd_section_name (sec) : name; } else { - h = sym_hashes [r_symndx - symtab_hdr->sh_info]; - - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; + bfd_boolean unresolved_reloc, warned, ignored; + + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned, ignored); name = h->root.root.string; - - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - sec = h->root.u.def.section; - relocation = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); -#if 0 - fprintf (stderr, - "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n", - sec->name, name, h->root.u.def.value, - sec->output_section->vma, sec->output_offset, relocation); -#endif - } - else if (h->root.type == bfd_link_hash_undefweak) - { -#if 0 - fprintf (stderr, "undefined: sec: %s, name: %s\n", - sec->name, name); -#endif - relocation = 0; - } - else - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset))) - return false; -#if 0 - fprintf (stderr, "unknown: name: %s\n", name); -#endif - relocation = 0; - } } - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); + 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; + + r = fr30_final_link_relocate (howto, input_bfd, input_section, + contents, rel, relocation); if (r != bfd_reloc_ok) { - const char * msg = (const char *)0; + const char * msg = (const char *) NULL; switch (r) { case bfd_reloc_overflow: - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; + (*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: - if (! ((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset))) - return false; + (*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"); - goto common_error; + break; case bfd_reloc_notsupported: msg = _("internal error: unsupported relocation error"); - goto common_error; + break; case bfd_reloc_dangerous: msg = _("internal error: dangerous relocation"); - goto common_error; - - case bfd_reloc_other: - msg = _("could not locate special linker symbol __gp"); - goto common_error; - - case bfd_reloc_continue: - msg = _("could not locate special linker symbol __ep"); - goto common_error; + break; - case (bfd_reloc_dangerous + 1): - msg = _("could not locate special linker symbol __ctbp"); - goto common_error; - default: msg = _("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return false; break; } + + if (msg) + (*info->callbacks->warning) (info, msg, name, input_bfd, + input_section, rel->r_offset); + } + } + + return TRUE; +} + +/* Return the section that should be marked against GC for a given + relocation. */ + +static asection * +fr30_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) + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_FR30_GNU_VTINHERIT: + case R_FR30_GNU_VTENTRY: + return NULL; + } + + return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); +} + +/* 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 +fr30_elf_check_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; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + + if (bfd_link_relocatable (info)) + return TRUE; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + + 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]; + 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; + } + + switch (ELF32_R_TYPE (rel->r_info)) + { + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_FR30_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_FR30_GNU_VTENTRY: + if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return FALSE; + break; } } - return true; + return TRUE; } #define ELF_ARCH bfd_arch_fr30 -#define ELF_MACHINE_CODE EM_CYGNUS_FR30 +#define ELF_MACHINE_CODE EM_FR30 +#define ELF_MACHINE_ALT1 EM_CYGNUS_FR30 #define ELF_MAXPAGESIZE 0x1000 -#define TARGET_BIG_SYM bfd_elf32_fr30_vec +#define TARGET_BIG_SYM fr30_elf32_vec #define TARGET_BIG_NAME "elf32-fr30" #define elf_info_to_howto_rel NULL #define elf_info_to_howto fr30_info_to_howto_rela #define elf_backend_relocate_section fr30_elf_relocate_section +#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook +#define elf_backend_check_relocs fr30_elf_check_relocs + +#define elf_backend_can_gc_sections 1 +#define elf_backend_rela_normal 1 #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup - +#define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup + #include "elf32-target.h"