1/* SPARC-specific support for 32-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005, 2007 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22#include "sysdep.h" 23#include "bfd.h" 24#include "bfdlink.h" 25#include "libbfd.h" 26#include "elf-bfd.h" 27#include "elf/sparc.h" 28#include "opcode/sparc.h" 29#include "elfxx-sparc.h" 30#include "elf-vxworks.h" 31 32/* Support for core dump NOTE sections. */ 33 34static bfd_boolean 35elf32_sparc_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 36{ 37 switch (note->descsz) 38 { 39 default: 40 return FALSE; 41 42 case 260: /* Solaris prpsinfo_t. */ 43 elf_tdata (abfd)->core_program 44 = _bfd_elfcore_strndup (abfd, note->descdata + 84, 16); 45 elf_tdata (abfd)->core_command 46 = _bfd_elfcore_strndup (abfd, note->descdata + 100, 80); 47 break; 48 49 case 336: /* Solaris psinfo_t. */ 50 elf_tdata (abfd)->core_program 51 = _bfd_elfcore_strndup (abfd, note->descdata + 88, 16); 52 elf_tdata (abfd)->core_command 53 = _bfd_elfcore_strndup (abfd, note->descdata + 104, 80); 54 break; 55 } 56 57 return TRUE; 58} 59 60/* Functions for dealing with the e_flags field. 61 62 We don't define set_private_flags or copy_private_bfd_data because 63 the only currently defined values are based on the bfd mach number, 64 so we use the latter instead and defer setting e_flags until the 65 file is written out. */ 66 67/* Merge backend specific data from an object file to the output 68 object file when linking. */ 69 70static bfd_boolean 71elf32_sparc_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 72{ 73 bfd_boolean error; 74 unsigned long ibfd_mach; 75 /* FIXME: This should not be static. */ 76 static unsigned long previous_ibfd_e_flags = (unsigned long) -1; 77 78 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 79 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 80 return TRUE; 81 82 error = FALSE; 83 84 ibfd_mach = bfd_get_mach (ibfd); 85 if (bfd_mach_sparc_64bit_p (ibfd_mach)) 86 { 87 error = TRUE; 88 (*_bfd_error_handler) 89 (_("%B: compiled for a 64 bit system and target is 32 bit"), ibfd); 90 } 91 else if ((ibfd->flags & DYNAMIC) == 0) 92 { 93 if (bfd_get_mach (obfd) < ibfd_mach) 94 bfd_set_arch_mach (obfd, bfd_arch_sparc, ibfd_mach); 95 } 96 97 if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA) 98 != previous_ibfd_e_flags) 99 && previous_ibfd_e_flags != (unsigned long) -1) 100 { 101 (*_bfd_error_handler) 102 (_("%B: linking little endian files with big endian files"), ibfd); 103 error = TRUE; 104 } 105 previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA; 106 107 if (error) 108 { 109 bfd_set_error (bfd_error_bad_value); 110 return FALSE; 111 } 112 113 return TRUE; 114} 115 116/* The final processing done just before writing out the object file. 117 We need to set the e_machine field appropriately. */ 118 119static void 120elf32_sparc_final_write_processing (bfd *abfd, 121 bfd_boolean linker ATTRIBUTE_UNUSED) 122{ 123 switch (bfd_get_mach (abfd)) 124 { 125 case bfd_mach_sparc : 126 case bfd_mach_sparc_sparclet : 127 case bfd_mach_sparc_sparclite : 128 break; /* nothing to do */ 129 case bfd_mach_sparc_v8plus : 130 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 131 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 132 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS; 133 break; 134 case bfd_mach_sparc_v8plusa : 135 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 136 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 137 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1; 138 break; 139 case bfd_mach_sparc_v8plusb : 140 elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS; 141 elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK; 142 elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1 143 | EF_SPARC_SUN_US3; 144 break; 145 case bfd_mach_sparc_sparclite_le : 146 elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA; 147 break; 148 default : 149 abort (); 150 break; 151 } 152} 153 154static enum elf_reloc_type_class 155elf32_sparc_reloc_type_class (const Elf_Internal_Rela *rela) 156{ 157 switch ((int) ELF32_R_TYPE (rela->r_info)) 158 { 159 case R_SPARC_RELATIVE: 160 return reloc_class_relative; 161 case R_SPARC_JMP_SLOT: 162 return reloc_class_plt; 163 case R_SPARC_COPY: 164 return reloc_class_copy; 165 default: 166 return reloc_class_normal; 167 } 168} 169 170#define TARGET_BIG_SYM bfd_elf32_sparc_vec 171#define TARGET_BIG_NAME "elf32-sparc" 172#define ELF_ARCH bfd_arch_sparc 173#define ELF_MACHINE_CODE EM_SPARC 174#define ELF_MACHINE_ALT1 EM_SPARC32PLUS 175#define ELF_MAXPAGESIZE 0x10000 176#define ELF_COMMONPAGESIZE 0x2000 177 178#define bfd_elf32_bfd_merge_private_bfd_data \ 179 elf32_sparc_merge_private_bfd_data 180#define elf_backend_final_write_processing \ 181 elf32_sparc_final_write_processing 182#define elf_backend_grok_psinfo elf32_sparc_grok_psinfo 183#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class 184 185#define elf_info_to_howto _bfd_sparc_elf_info_to_howto 186#define bfd_elf32_bfd_reloc_type_lookup _bfd_sparc_elf_reloc_type_lookup 187#define bfd_elf32_bfd_reloc_name_lookup \ 188 _bfd_sparc_elf_reloc_name_lookup 189#define bfd_elf32_bfd_link_hash_table_create \ 190 _bfd_sparc_elf_link_hash_table_create 191#define bfd_elf32_bfd_relax_section _bfd_sparc_elf_relax_section 192#define bfd_elf32_new_section_hook _bfd_sparc_elf_new_section_hook 193#define elf_backend_copy_indirect_symbol \ 194 _bfd_sparc_elf_copy_indirect_symbol 195#define elf_backend_create_dynamic_sections \ 196 _bfd_sparc_elf_create_dynamic_sections 197#define elf_backend_check_relocs _bfd_sparc_elf_check_relocs 198#define elf_backend_adjust_dynamic_symbol \ 199 _bfd_sparc_elf_adjust_dynamic_symbol 200#define elf_backend_omit_section_dynsym _bfd_sparc_elf_omit_section_dynsym 201#define elf_backend_size_dynamic_sections \ 202 _bfd_sparc_elf_size_dynamic_sections 203#define elf_backend_relocate_section _bfd_sparc_elf_relocate_section 204#define elf_backend_finish_dynamic_symbol \ 205 _bfd_sparc_elf_finish_dynamic_symbol 206#define elf_backend_finish_dynamic_sections \ 207 _bfd_sparc_elf_finish_dynamic_sections 208#define bfd_elf32_mkobject _bfd_sparc_elf_mkobject 209#define elf_backend_object_p _bfd_sparc_elf_object_p 210#define elf_backend_gc_mark_hook _bfd_sparc_elf_gc_mark_hook 211#define elf_backend_gc_sweep_hook _bfd_sparc_elf_gc_sweep_hook 212#define elf_backend_plt_sym_val _bfd_sparc_elf_plt_sym_val 213#define elf_backend_init_index_section _bfd_elf_init_1_index_section 214 215#define elf_backend_can_gc_sections 1 216#define elf_backend_can_refcount 1 217#define elf_backend_want_got_plt 0 218#define elf_backend_plt_readonly 0 219#define elf_backend_want_plt_sym 1 220#define elf_backend_got_header_size 4 221#define elf_backend_rela_normal 1 222 223#include "elf32-target.h" 224 225/* A wrapper around _bfd_sparc_elf_link_hash_table_create that identifies 226 the target system as VxWorks. */ 227 228static struct bfd_link_hash_table * 229elf32_sparc_vxworks_link_hash_table_create (bfd *abfd) 230{ 231 struct bfd_link_hash_table *ret; 232 233 ret = _bfd_sparc_elf_link_hash_table_create (abfd); 234 if (ret) 235 { 236 struct _bfd_sparc_elf_link_hash_table *htab; 237 238 htab = (struct _bfd_sparc_elf_link_hash_table *) ret; 239 htab->is_vxworks = 1; 240 } 241 return ret; 242} 243 244/* A final_write_processing hook that does both the SPARC- and VxWorks- 245 specific handling. */ 246 247static void 248elf32_sparc_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) 249{ 250 elf32_sparc_final_write_processing (abfd, linker); 251 elf_vxworks_final_write_processing (abfd, linker); 252} 253 254#undef TARGET_BIG_SYM 255#define TARGET_BIG_SYM bfd_elf32_sparc_vxworks_vec 256#undef TARGET_BIG_NAME 257#define TARGET_BIG_NAME "elf32-sparc-vxworks" 258 259#undef ELF_MINPAGESIZE 260#define ELF_MINPAGESIZE 0x1000 261 262#undef bfd_elf32_bfd_link_hash_table_create 263#define bfd_elf32_bfd_link_hash_table_create \ 264 elf32_sparc_vxworks_link_hash_table_create 265 266#undef elf_backend_want_got_plt 267#define elf_backend_want_got_plt 1 268#undef elf_backend_plt_readonly 269#define elf_backend_plt_readonly 1 270#undef elf_backend_got_header_size 271#define elf_backend_got_header_size 12 272#undef elf_backend_add_symbol_hook 273#define elf_backend_add_symbol_hook \ 274 elf_vxworks_add_symbol_hook 275#undef elf_backend_link_output_symbol_hook 276#define elf_backend_link_output_symbol_hook \ 277 elf_vxworks_link_output_symbol_hook 278#undef elf_backend_emit_relocs 279#define elf_backend_emit_relocs \ 280 elf_vxworks_emit_relocs 281#undef elf_backend_final_write_processing 282#define elf_backend_final_write_processing \ 283 elf32_sparc_vxworks_final_write_processing 284 285#undef elf32_bed 286#define elf32_bed sparc_elf_vxworks_bed 287 288#include "elf32-target.h" 289