diff options
Diffstat (limited to 'binutils-2.25/bfd/elf32-sparc.c')
| -rw-r--r-- | binutils-2.25/bfd/elf32-sparc.c | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/elf32-sparc.c b/binutils-2.25/bfd/elf32-sparc.c new file mode 100644 index 00000000..52abfd43 --- /dev/null +++ b/binutils-2.25/bfd/elf32-sparc.c @@ -0,0 +1,334 @@ +/* SPARC-specific support for 32-bit ELF + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, + 2003, 2004, 2005, 2006, 2007, 2010, 2011 + 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 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. + + 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 "sysdep.h" +#include "bfd.h" +#include "bfdlink.h" +#include "libbfd.h" +#include "elf-bfd.h" +#include "elf/sparc.h" +#include "opcode/sparc.h" +#include "elfxx-sparc.h" +#include "elf-vxworks.h" + +/* Support for core dump NOTE sections. */ + +static bfd_boolean +elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) +{ + switch (note->descsz) + { + default: + return FALSE; + + case 260: /* Solaris prpsinfo_t. */ + elf_tdata (abfd)->core->program + = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16); + elf_tdata (abfd)->core->command + = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80); + break; + + case 336: /* Solaris psinfo_t. */ + elf_tdata (abfd)->core->program + = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16); + elf_tdata (abfd)->core->command + = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80); + break; + } + + return TRUE; +} + +/* Functions for dealing with the e_flags field. + + We don't define set_private_flags or copy_private_bfd_data because + the only currently defined values are based on the bfd mach number, + so we use the latter instead and defer setting e_flags until the + file is written out. */ + +/* Merge backend specific data from an object file to the output + object file when linking. */ + +static bfd_boolean +elf32_sparc_merge_private_bfd_data (bfd *ibfd, bfd *obfd) +{ + bfd_boolean error; + unsigned long ibfd_mach; + /* FIXME: This should not be static. */ + static unsigned long previous_ibfd_e_flags = (unsigned long) -1; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return TRUE; + + error = FALSE; + + ibfd_mach = bfd_get_mach (ibfd); + if (bfd_mach_sparc_64bit_p (ibfd_mach)) + { + error = TRUE; + (*_bfd_error_handler) + (_("%B: compiled for a 64 bit system and target is 32 bit"), ibfd); + } + else if ((ibfd->flags & DYNAMIC) == 0) + { + if (bfd_get_mach (obfd) < ibfd_mach) + bfd_set_arch_mach (obfd, bfd_arch_sparc, ibfd_mach); + } + + if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) + != previous_ibfd_e_flags) + && previous_ibfd_e_flags != (unsigned long) -1) + { + (*_bfd_error_handler) + (_("%B: linking little endian files with big endian files"), ibfd); + error = TRUE; + } + previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; + + if (error) + { + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + return _bfd_sparc_elf_merge_private_bfd_data (ibfd, obfd); +} + +/* The final processing done just before writing out the object file. + We need to set the e_machine field appropriately. */ + +static void +elf32_sparc_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) +{ + switch (bfd_get_mach (abfd)) + { + case bfd_mach_sparc : + case bfd_mach_sparc_sparclet : + case bfd_mach_sparc_sparclite : + break; /* nothing to do */ + case bfd_mach_sparc_v8plus : + elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; + elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; + elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; + break; + case bfd_mach_sparc_v8plusa : + elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; + elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; + elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; + break; + case bfd_mach_sparc_v8plusb : + elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; + elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; + elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 + | EF_SPARC_SUN_US3; + break; + case bfd_mach_sparc_sparclite_le : + elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; + break; + default : + abort (); + break; + } +} + +static enum elf_reloc_type_class +elf32_sparc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, + const asection *rel_sec ATTRIBUTE_UNUSED, + const Elf_Internal_Rela *rela) +{ + switch ((int) ELF32_R_TYPE (rela->r_info)) + { + case R_SPARC_RELATIVE: + return reloc_class_relative; + case R_SPARC_JMP_SLOT: + return reloc_class_plt; + case R_SPARC_COPY: + return reloc_class_copy; + default: + return reloc_class_normal; + } +} + +/* Hook called by the linker routine which adds symbols from an object + file. */ + +static bfd_boolean +elf32_sparc_add_symbol_hook (bfd * abfd, + struct bfd_link_info * info ATTRIBUTE_UNUSED, + Elf_Internal_Sym * sym, + const char ** namep ATTRIBUTE_UNUSED, + flagword * flagsp ATTRIBUTE_UNUSED, + asection ** secp ATTRIBUTE_UNUSED, + bfd_vma * valp ATTRIBUTE_UNUSED) +{ + if ((abfd->flags & DYNAMIC) == 0 + && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC + || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) + elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; + return TRUE; +} + +#define TARGET_BIG_SYM bfd_elf32_sparc_vec +#define TARGET_BIG_NAME "elf32-sparc" +#define ELF_ARCH bfd_arch_sparc +#define ELF_TARGET_ID SPARC_ELF_DATA +#define ELF_MACHINE_CODE EM_SPARC +#define ELF_MACHINE_ALT1 EM_SPARC32PLUS +#define ELF_MAXPAGESIZE 0x10000 +#define ELF_COMMONPAGESIZE 0x2000 + +#define bfd_elf32_bfd_merge_private_bfd_data \ + elf32_sparc_merge_private_bfd_data +#define elf_backend_final_write_processing \ + elf32_sparc_final_write_processing +#define elf_backend_grok_psinfo elf32_sparc_grok_psinfo +#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class + +#define elf_info_to_howto _bfd_sparc_elf_info_to_howto +#define bfd_elf32_bfd_reloc_type_lookup _bfd_sparc_elf_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup \ + _bfd_sparc_elf_reloc_name_lookup +#define bfd_elf32_bfd_link_hash_table_create \ + _bfd_sparc_elf_link_hash_table_create +#define bfd_elf32_bfd_link_hash_table_free \ + _bfd_sparc_elf_link_hash_table_free +#define bfd_elf32_bfd_relax_section _bfd_sparc_elf_relax_section +#define bfd_elf32_new_section_hook _bfd_sparc_elf_new_section_hook +#define elf_backend_copy_indirect_symbol \ + _bfd_sparc_elf_copy_indirect_symbol +#define elf_backend_create_dynamic_sections \ + _bfd_sparc_elf_create_dynamic_sections +#define elf_backend_check_relocs _bfd_sparc_elf_check_relocs +#define elf_backend_adjust_dynamic_symbol \ + _bfd_sparc_elf_adjust_dynamic_symbol +#define elf_backend_omit_section_dynsym _bfd_sparc_elf_omit_section_dynsym +#define elf_backend_size_dynamic_sections \ + _bfd_sparc_elf_size_dynamic_sections +#define elf_backend_relocate_section _bfd_sparc_elf_relocate_section +#define elf_backend_finish_dynamic_symbol \ + _bfd_sparc_elf_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + _bfd_sparc_elf_finish_dynamic_sections +#define bfd_elf32_mkobject _bfd_sparc_elf_mkobject +#define elf_backend_object_p _bfd_sparc_elf_object_p +#define elf_backend_gc_mark_hook _bfd_sparc_elf_gc_mark_hook +#define elf_backend_gc_sweep_hook _bfd_sparc_elf_gc_sweep_hook +#define elf_backend_plt_sym_val _bfd_sparc_elf_plt_sym_val +#define elf_backend_init_index_section _bfd_elf_init_1_index_section + +#define elf_backend_can_gc_sections 1 +#define elf_backend_can_refcount 1 +#define elf_backend_want_got_plt 0 +#define elf_backend_plt_readonly 0 +#define elf_backend_want_plt_sym 1 +#define elf_backend_got_header_size 4 +#define elf_backend_rela_normal 1 + +#define elf_backend_post_process_headers _bfd_elf_set_osabi +#define elf_backend_add_symbol_hook elf32_sparc_add_symbol_hook + +#include "elf32-target.h" + +/* Solaris 2. */ + +#undef TARGET_BIG_SYM +#define TARGET_BIG_SYM bfd_elf32_sparc_sol2_vec +#undef TARGET_BIG_NAME +#define TARGET_BIG_NAME "elf32-sparc-sol2" + +#undef elf32_bed +#define elf32_bed elf32_sparc_sol2_bed + +/* The 32-bit static TLS arena size is rounded to the nearest 8-byte + boundary. */ +#undef elf_backend_static_tls_alignment +#define elf_backend_static_tls_alignment 8 + +#include "elf32-target.h" + +/* A wrapper around _bfd_sparc_elf_link_hash_table_create that identifies + the target system as VxWorks. */ + +static struct bfd_link_hash_table * +elf32_sparc_vxworks_link_hash_table_create (bfd *abfd) +{ + struct bfd_link_hash_table *ret; + + ret = _bfd_sparc_elf_link_hash_table_create (abfd); + if (ret) + { + struct _bfd_sparc_elf_link_hash_table *htab; + + htab = (struct _bfd_sparc_elf_link_hash_table *) ret; + htab->is_vxworks = 1; + } + return ret; +} + +/* A final_write_processing hook that does both the SPARC- and VxWorks- + specific handling. */ + +static void +elf32_sparc_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) +{ + elf32_sparc_final_write_processing (abfd, linker); + elf_vxworks_final_write_processing (abfd, linker); +} + +#undef TARGET_BIG_SYM +#define TARGET_BIG_SYM bfd_elf32_sparc_vxworks_vec +#undef TARGET_BIG_NAME +#define TARGET_BIG_NAME "elf32-sparc-vxworks" + +#undef ELF_MINPAGESIZE +#define ELF_MINPAGESIZE 0x1000 + +#undef bfd_elf32_bfd_link_hash_table_create +#define bfd_elf32_bfd_link_hash_table_create \ + elf32_sparc_vxworks_link_hash_table_create + +#undef elf_backend_want_got_plt +#define elf_backend_want_got_plt 1 +#undef elf_backend_plt_readonly +#define elf_backend_plt_readonly 1 +#undef elf_backend_got_header_size +#define elf_backend_got_header_size 12 +#undef elf_backend_add_symbol_hook +#define elf_backend_add_symbol_hook \ + elf_vxworks_add_symbol_hook +#undef elf_backend_link_output_symbol_hook +#define elf_backend_link_output_symbol_hook \ + elf_vxworks_link_output_symbol_hook +#undef elf_backend_emit_relocs +#define elf_backend_emit_relocs \ + elf_vxworks_emit_relocs +#undef elf_backend_final_write_processing +#define elf_backend_final_write_processing \ + elf32_sparc_vxworks_final_write_processing +#undef elf_backend_static_tls_alignment + +#undef elf32_bed +#define elf32_bed sparc_elf_vxworks_bed + +#include "elf32-target.h" |