X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf32-openrisc.c;h=f0b780b059154cdf39c3264d02bc684c81d8323c;hb=36fc76aebb7315571094d66b35e13d69d512fbe2;hp=6220df3c0734f47a06e4f9ec4bf18f485616c804;hpb=973a3492d553c8b18c8a3257b4874253c0efa68a;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-openrisc.c b/bfd/elf32-openrisc.c index 6220df3c07..f0b780b059 100644 --- a/bfd/elf32-openrisc.c +++ b/bfd/elf32-openrisc.c @@ -1,59 +1,34 @@ /* OpenRISC-specific support for 32-bit ELF. - Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007 + Free Software Foundation, Inc. Contributed by Johan Rydberg, jrydberg@opencores.org -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 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. + 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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/openrisc.h" #include "libiberty.h" -/* Forward declarations. */ - -static reloc_howto_type *openrisc_reloc_type_lookup - PARAMS ((bfd * , bfd_reloc_code_real_type)); -static void openrisc_info_to_howto_rela - PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); -static bfd_boolean openrisc_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 openrisc_final_link_relocate - PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, bfd_vma)); -static bfd_boolean openrisc_elf_gc_sweep_hook - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static asection * openrisc_elf_gc_mark_hook - PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static bfd_boolean openrisc_elf_check_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static bfd_boolean openrisc_elf_object_p - PARAMS ((bfd *)); -static void openrisc_elf_final_write_processing - PARAMS ((bfd *, bfd_boolean)); - - static reloc_howto_type openrisc_elf_howto_table[] = - { +{ /* This reloc does nothing. */ HOWTO (R_OPENRISC_NONE, /* type */ 0, /* rightshift */ @@ -172,7 +147,7 @@ static reloc_howto_type openrisc_elf_howto_table[] = 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ - /* GNU extension to record C++ vtable hierarchy */ + /* GNU extension to record C++ vtable hierarchy. */ HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -187,7 +162,7 @@ static reloc_howto_type openrisc_elf_howto_table[] = 0, /* dst_mask */ FALSE), /* pcrel_offset */ - /* GNU extension to record C++ vtable member usage */ + /* GNU extension to record C++ vtable member usage. */ HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ @@ -206,29 +181,28 @@ static reloc_howto_type openrisc_elf_howto_table[] = /* Map BFD reloc types to OpenRISC ELF reloc types. */ struct openrisc_reloc_map - { - bfd_reloc_code_real_type bfd_reloc_val; - unsigned int openrisc_reloc_val; - }; +{ + bfd_reloc_code_real_type bfd_reloc_val; + unsigned int openrisc_reloc_val; +}; static const struct openrisc_reloc_map openrisc_reloc_map[] = - { - { BFD_RELOC_NONE, R_OPENRISC_NONE }, - { BFD_RELOC_32, R_OPENRISC_32 }, - { BFD_RELOC_16, R_OPENRISC_16 }, - { BFD_RELOC_8, R_OPENRISC_8 }, - { BFD_RELOC_OPENRISC_REL_26,R_OPENRISC_INSN_REL_26 }, - { BFD_RELOC_OPENRISC_ABS_26,R_OPENRISC_INSN_ABS_26 }, - { BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN }, - { BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN }, - { BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY } - }; +{ + { BFD_RELOC_NONE, R_OPENRISC_NONE }, + { BFD_RELOC_32, R_OPENRISC_32 }, + { BFD_RELOC_16, R_OPENRISC_16 }, + { BFD_RELOC_8, R_OPENRISC_8 }, + { BFD_RELOC_OPENRISC_REL_26, R_OPENRISC_INSN_REL_26 }, + { BFD_RELOC_OPENRISC_ABS_26, R_OPENRISC_INSN_ABS_26 }, + { BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN }, + { BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN }, + { BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT }, + { BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY } +}; static reloc_howto_type * -openrisc_reloc_type_lookup (abfd, code) - bfd * abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +openrisc_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { unsigned int i; @@ -240,13 +214,29 @@ openrisc_reloc_type_lookup (abfd, code) return NULL; } +static reloc_howto_type * +openrisc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *r_name) +{ + unsigned int i; + + for (i = 0; + i < (sizeof (openrisc_elf_howto_table) + / sizeof (openrisc_elf_howto_table[0])); + i++) + if (openrisc_elf_howto_table[i].name != NULL + && strcasecmp (openrisc_elf_howto_table[i].name, r_name) == 0) + return &openrisc_elf_howto_table[i]; + + return NULL; +} + /* Set the howto pointer for an OpenRISC ELF reloc. */ static void -openrisc_info_to_howto_rela (abfd, cache_ptr, dst) - bfd * abfd ATTRIBUTE_UNUSED; - arelent * cache_ptr; - Elf_Internal_Rela * dst; +openrisc_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, + arelent * cache_ptr, + Elf_Internal_Rela * dst) { unsigned int r_type; @@ -259,14 +249,12 @@ openrisc_info_to_howto_rela (abfd, cache_ptr, dst) routines, but a few relocs, we have to do them ourselves. */ static bfd_reloc_status_type -openrisc_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; +openrisc_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; @@ -319,25 +307,20 @@ openrisc_final_link_relocate (howto, input_bfd, input_section, contents, rel, accordingly. */ static bfd_boolean -openrisc_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; +openrisc_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; - 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; @@ -365,7 +348,6 @@ openrisc_elf_relocate_section (output_bfd, info, input_bfd, input_section, (sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type))) abort (); - /* This is a final link. */ howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info); h = NULL; sym = NULL; @@ -391,12 +373,26 @@ openrisc_elf_relocate_section (output_bfd, info, input_bfd, input_section, unresolved_reloc, warned); } + if (sec != NULL && elf_discarded_section (sec)) + { + /* For relocs against symbols from removed linkonce sections, + or sections discarded by a linker script, we just want the + section contents zeroed. Avoid any special processing. */ + _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); + rel->r_info = 0; + rel->r_addend = 0; + continue; + } + + if (info->relocatable) + continue; + r = openrisc_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation); if (r != bfd_reloc_ok) { - const char *msg = (const char *) NULL; + const char *msg = NULL; switch (r) { @@ -444,52 +440,21 @@ openrisc_elf_relocate_section (output_bfd, info, input_bfd, input_section, relocation. */ static asection * -openrisc_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; +openrisc_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_OPENRISC_GNU_VTINHERIT: - case R_OPENRISC_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - } - else - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - return NULL; -} - -/* Update the got entry reference counts for the section being removed. */ - -static bfd_boolean -openrisc_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; + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_OPENRISC_GNU_VTINHERIT: + case R_OPENRISC_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. @@ -497,11 +462,10 @@ openrisc_elf_gc_sweep_hook (abfd, info, sec, relocs) virtual table relocs for gc. */ static bfd_boolean -openrisc_elf_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; +openrisc_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, **sym_hashes_end; @@ -559,24 +523,17 @@ openrisc_elf_check_relocs (abfd, info, sec, relocs) /* Set the right machine number. */ static bfd_boolean -openrisc_elf_object_p (abfd) - bfd *abfd; +openrisc_elf_object_p (bfd *abfd) { - switch (elf_elfheader (abfd)->e_flags & 0xf) - { - default: - (void) bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0); - break; - } + bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0); return TRUE; } /* Store the machine number in the flags field. */ static void -openrisc_elf_final_write_processing (abfd, linker) - bfd *abfd; - bfd_boolean linker ATTRIBUTE_UNUSED; +openrisc_elf_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) { unsigned long val; @@ -604,13 +561,13 @@ openrisc_elf_final_write_processing (abfd, linker) #define elf_info_to_howto openrisc_info_to_howto_rela #define elf_backend_relocate_section openrisc_elf_relocate_section #define elf_backend_gc_mark_hook openrisc_elf_gc_mark_hook -#define elf_backend_gc_sweep_hook openrisc_elf_gc_sweep_hook #define elf_backend_check_relocs openrisc_elf_check_relocs #define elf_backend_can_gc_sections 1 #define elf_backend_rela_normal 1 #define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup openrisc_reloc_name_lookup #define elf_backend_object_p openrisc_elf_object_p #define elf_backend_final_write_processing openrisc_elf_final_write_processing