projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 252b5132 | 1 | /* ARM ELF support for BFD. |
| c3aa17e9 AM |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
| 3 | Free Software Foundation, Inc. | |
| 252b5132 RH |
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 2 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 Foundation, | |
| e172dbf8 | 19 | Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 252b5132 RH |
20 | |
| 21 | #ifndef _ELF_ARM_H | |
| 22 | #define _ELF_ARM_H | |
| 23 | ||
| 24 | #include "elf/reloc-macros.h" | |
| 25 | ||
| 26 | /* Processor specific flags for the ELF header e_flags field. */ | |
| 27 | #define EF_ARM_RELEXEC 0x01 | |
| 28 | #define EF_ARM_HASENTRY 0x02 | |
| 2a7a4624 PB |
29 | #define EF_ARM_INTERWORK 0x04 |
| 30 | #define EF_ARM_APCS_26 0x08 | |
| 31 | #define EF_ARM_APCS_FLOAT 0x10 | |
| 32 | #define EF_ARM_PIC 0x20 | |
| 33 | #define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */ | |
| 34 | #define EF_ARM_NEW_ABI 0x80 | |
| 35 | #define EF_ARM_OLD_ABI 0x100 | |
| 36 | #define EF_ARM_SOFT_FLOAT 0x200 | |
| ca4ebd1e | 37 | #define EF_ARM_VFP_FLOAT 0x400 |
| fde78edd | 38 | #define EF_ARM_MAVERICK_FLOAT 0x800 |
| 2a7a4624 | 39 | |
| b294bdf8 | 40 | /* Frame unwind information */ |
| c19d1205 | 41 | #define PT_ARM_EXIDX (PT_LOPROC + 1) |
| b294bdf8 | 42 | |
| 2a7a4624 | 43 | /* Other constants defined in the ARM ELF spec. version B-01. */ |
| ff1c4e0d | 44 | #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ |
| 2a7a4624 PB |
45 | #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ |
| 46 | #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ | |
| ff1c4e0d NC |
47 | #define EF_ARM_EABIMASK 0xFF000000 |
| 48 | ||
| d507cf36 PB |
49 | /* Constants defined in AAELF. */ |
| 50 | #define EF_ARM_BE8 0x00800000 | |
| 51 | #define EF_ARM_LE8 0x00400000 | |
| 52 | ||
| ff1c4e0d NC |
53 | #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) |
| 54 | #define EF_ARM_EABI_UNKNOWN 0x00000000 | |
| 55 | #define EF_ARM_EABI_VER1 0x01000000 | |
| 2a7a4624 | 56 | #define EF_ARM_EABI_VER2 0x02000000 |
| d507cf36 | 57 | #define EF_ARM_EABI_VER3 0x03000000 |
| 8cb51566 | 58 | #define EF_ARM_EABI_VER4 0x04000000 |
| 3a4a14e9 | 59 | #define EF_ARM_EABI_VER5 0x05000000 |
| ff1c4e0d | 60 | |
| 252b5132 | 61 | /* Local aliases for some flags to match names used by COFF port. */ |
| 2a7a4624 PB |
62 | #define F_INTERWORK EF_ARM_INTERWORK |
| 63 | #define F_APCS26 EF_ARM_APCS_26 | |
| 64 | #define F_APCS_FLOAT EF_ARM_APCS_FLOAT | |
| 65 | #define F_PIC EF_ARM_PIC | |
| 66 | #define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT | |
| ca4ebd1e | 67 | #define F_VFP_FLOAT EF_ARM_VFP_FLOAT |
| 252b5132 | 68 | |
| 2f0ca46a NC |
69 | /* Additional symbol types for Thumb. */ |
| 70 | #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */ | |
| 71 | #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ | |
| 252b5132 | 72 | |
| 40a18ebd NC |
73 | /* Additional section types. */ |
| 74 | #define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */ | |
| 1cacb694 RE |
75 | #define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */ |
| 76 | #define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */ | |
| 40a18ebd | 77 | |
| 2f0ca46a NC |
78 | /* ARM-specific values for sh_flags. */ |
| 79 | #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ | |
| 80 | #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ | |
| 252b5132 | 81 | |
| 2f0ca46a NC |
82 | /* ARM-specific program header flags. */ |
| 83 | #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ | |
| ff1c4e0d NC |
84 | #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ |
| 85 | #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ | |
| 252b5132 | 86 | |
| e95de063 MS |
87 | /* Values for the Tag_CPU_arch EABI attribute. */ |
| 88 | #define TAG_CPU_ARCH_PRE_V4 0 | |
| 89 | #define TAG_CPU_ARCH_V4 1 | |
| 90 | #define TAG_CPU_ARCH_V4T 2 | |
| 91 | #define TAG_CPU_ARCH_V5T 3 | |
| 92 | #define TAG_CPU_ARCH_V5TE 4 | |
| 93 | #define TAG_CPU_ARCH_V5TEJ 5 | |
| 94 | #define TAG_CPU_ARCH_V6 6 | |
| 95 | #define TAG_CPU_ARCH_V6KZ 7 | |
| 96 | #define TAG_CPU_ARCH_V6T2 8 | |
| 97 | #define TAG_CPU_ARCH_V6K 9 | |
| 98 | #define TAG_CPU_ARCH_V7 10 | |
| 99 | ||
| 252b5132 | 100 | /* Relocation types. */ |
| 8725b940 | 101 | |
| 252b5132 | 102 | START_RELOC_NUMBERS (elf_arm_reloc_type) |
| c19d1205 ZW |
103 | /* AAELF official names and numbers. */ |
| 104 | RELOC_NUMBER (R_ARM_NONE, 0) | |
| 105 | RELOC_NUMBER (R_ARM_PC24, 1) /* deprecated */ | |
| 106 | RELOC_NUMBER (R_ARM_ABS32, 2) | |
| 107 | RELOC_NUMBER (R_ARM_REL32, 3) | |
| c19d1205 ZW |
108 | RELOC_NUMBER (R_ARM_LDR_PC_G0, 4) |
| 109 | RELOC_NUMBER (R_ARM_ABS16, 5) | |
| 110 | RELOC_NUMBER (R_ARM_ABS12, 6) | |
| 111 | RELOC_NUMBER (R_ARM_THM_ABS5, 7) | |
| 112 | RELOC_NUMBER (R_ARM_ABS8, 8) | |
| 113 | RELOC_NUMBER (R_ARM_SBREL32, 9) | |
| 114 | RELOC_NUMBER (R_ARM_THM_CALL, 10) | |
| 115 | RELOC_NUMBER (R_ARM_THM_PC8, 11) | |
| 116 | RELOC_NUMBER (R_ARM_BREL_ADJ, 12) | |
| 117 | RELOC_NUMBER (R_ARM_SWI24, 13) /* obsolete */ | |
| 118 | RELOC_NUMBER (R_ARM_THM_SWI8, 14) /* obsolete */ | |
| c19d1205 ZW |
119 | RELOC_NUMBER (R_ARM_XPC25, 15) /* obsolete */ |
| 120 | RELOC_NUMBER (R_ARM_THM_XPC22, 16) /* obsolete */ | |
| 121 | RELOC_NUMBER (R_ARM_TLS_DTPMOD32, 17) | |
| 122 | RELOC_NUMBER (R_ARM_TLS_DTPOFF32, 18) | |
| 123 | RELOC_NUMBER (R_ARM_TLS_TPOFF32, 19) | |
| 124 | RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ | |
| 125 | RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ | |
| 126 | RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ | |
| 127 | RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ | |
| 128 | RELOC_NUMBER (R_ARM_GOTOFF32, 24) /* 32 bit offset to GOT. */ | |
| 129 | RELOC_NUMBER (R_ARM_BASE_PREL, 25) /* 32 bit PC relative offset to GOT. */ | |
| 130 | RELOC_NUMBER (R_ARM_GOT_BREL, 26) /* 32 bit GOT entry. */ | |
| 131 | RELOC_NUMBER (R_ARM_PLT32, 27) /* deprecated - 32 bit PLT address. */ | |
| 132 | RELOC_NUMBER (R_ARM_CALL, 28) | |
| 133 | RELOC_NUMBER (R_ARM_JUMP24, 29) | |
| 134 | RELOC_NUMBER (R_ARM_THM_JUMP24, 30) | |
| 135 | RELOC_NUMBER (R_ARM_BASE_ABS, 31) | |
| 136 | RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) /* obsolete */ | |
| 137 | RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) /* obsolete */ | |
| 138 | RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) /* obsolete */ | |
| 139 | RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35) /* deprecated, should have _NC suffix */ | |
| 140 | RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36) /* deprecated, should have _NC suffix */ | |
| 141 | RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37) /* deprecated, should have _CK suffix */ | |
| 142 | RELOC_NUMBER (R_ARM_TARGET1, 38) | |
| 143 | RELOC_NUMBER (R_ARM_SBREL31, 39) /* deprecated */ | |
| 144 | RELOC_NUMBER (R_ARM_V4BX, 40) | |
| 145 | RELOC_NUMBER (R_ARM_TARGET2, 41) | |
| 146 | RELOC_NUMBER (R_ARM_PREL31, 42) | |
| 147 | RELOC_NUMBER (R_ARM_MOVW_ABS_NC, 43) | |
| 148 | RELOC_NUMBER (R_ARM_MOVT_ABS, 44) | |
| 149 | RELOC_NUMBER (R_ARM_MOVW_PREL_NC, 45) | |
| 150 | RELOC_NUMBER (R_ARM_MOVT_PREL, 46) | |
| 151 | RELOC_NUMBER (R_ARM_THM_MOVW_ABS_NC, 47) | |
| 152 | RELOC_NUMBER (R_ARM_THM_MOVT_ABS, 48) | |
| 153 | RELOC_NUMBER (R_ARM_THM_MOVW_PREL_NC, 49) | |
| 154 | RELOC_NUMBER (R_ARM_THM_MOVT_PREL, 50) | |
| 155 | RELOC_NUMBER (R_ARM_THM_JUMP19, 51) | |
| 156 | RELOC_NUMBER (R_ARM_THM_JUMP6, 52) | |
| 157 | RELOC_NUMBER (R_ARM_THM_ALU_PREL_11_0, 53) | |
| 158 | RELOC_NUMBER (R_ARM_THM_PC12, 54) | |
| 159 | RELOC_NUMBER (R_ARM_ABS32_NOI, 55) | |
| 160 | RELOC_NUMBER (R_ARM_REL32_NOI, 56) | |
| 161 | RELOC_NUMBER (R_ARM_ALU_PC_G0_NC, 57) | |
| 162 | RELOC_NUMBER (R_ARM_ALU_PC_G0, 58) | |
| 163 | RELOC_NUMBER (R_ARM_ALU_PC_G1_NC, 59) | |
| 164 | RELOC_NUMBER (R_ARM_ALU_PC_G1, 60) | |
| 165 | RELOC_NUMBER (R_ARM_ALU_PC_G2, 61) | |
| 166 | RELOC_NUMBER (R_ARM_LDR_PC_G1, 62) | |
| 167 | RELOC_NUMBER (R_ARM_LDR_PC_G2, 63) | |
| 168 | RELOC_NUMBER (R_ARM_LDRS_PC_G0, 64) | |
| 169 | RELOC_NUMBER (R_ARM_LDRS_PC_G1, 65) | |
| 170 | RELOC_NUMBER (R_ARM_LDRS_PC_G2, 66) | |
| 171 | RELOC_NUMBER (R_ARM_LDC_PC_G0, 67) | |
| 172 | RELOC_NUMBER (R_ARM_LDC_PC_G1, 68) | |
| 173 | RELOC_NUMBER (R_ARM_LDC_PC_G2, 69) | |
| 174 | RELOC_NUMBER (R_ARM_ALU_SB_G0_NC, 70) | |
| 175 | RELOC_NUMBER (R_ARM_ALU_SB_G0, 71) | |
| 176 | RELOC_NUMBER (R_ARM_ALU_SB_G1_NC, 72) | |
| 177 | RELOC_NUMBER (R_ARM_ALU_SB_G1, 73) | |
| 178 | RELOC_NUMBER (R_ARM_ALU_SB_G2, 74) | |
| 179 | RELOC_NUMBER (R_ARM_LDR_SB_G0, 75) | |
| 180 | RELOC_NUMBER (R_ARM_LDR_SB_G1, 76) | |
| 181 | RELOC_NUMBER (R_ARM_LDR_SB_G2, 77) | |
| 182 | RELOC_NUMBER (R_ARM_LDRS_SB_G0, 78) | |
| 183 | RELOC_NUMBER (R_ARM_LDRS_SB_G1, 79) | |
| 184 | RELOC_NUMBER (R_ARM_LDRS_SB_G2, 80) | |
| 4962c51a MS |
185 | RELOC_NUMBER (R_ARM_LDC_SB_G0, 81) |
| 186 | RELOC_NUMBER (R_ARM_LDC_SB_G1, 82) | |
| 187 | RELOC_NUMBER (R_ARM_LDC_SB_G2, 83) | |
| c19d1205 ZW |
188 | RELOC_NUMBER (R_ARM_MOVW_BREL_NC, 84) |
| 189 | RELOC_NUMBER (R_ARM_MOVT_BREL, 85) | |
| 190 | RELOC_NUMBER (R_ARM_MOVW_BREL, 86) | |
| 191 | RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC, 87) | |
| 192 | RELOC_NUMBER (R_ARM_THM_MOVT_BREL, 88) | |
| 193 | RELOC_NUMBER (R_ARM_THM_MOVW_BREL, 89) | |
| 194 | /* 90-93 unallocated */ | |
| 195 | RELOC_NUMBER (R_ARM_PLT32_ABS, 94) | |
| 196 | RELOC_NUMBER (R_ARM_GOT_ABS, 95) | |
| 197 | RELOC_NUMBER (R_ARM_GOT_PREL, 96) | |
| 198 | RELOC_NUMBER (R_ARM_GOT_BREL12, 97) | |
| 199 | RELOC_NUMBER (R_ARM_GOTOFF12, 98) | |
| 200 | RELOC_NUMBER (R_ARM_GOTRELAX, 99) | |
| c19d1205 ZW |
201 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) /* deprecated - old C++ abi */ |
| 202 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) /* deprecated - old C++ abi */ | |
| 203 | RELOC_NUMBER (R_ARM_THM_JUMP11, 102) | |
| 204 | RELOC_NUMBER (R_ARM_THM_JUMP8, 103) | |
| c19d1205 ZW |
205 | RELOC_NUMBER (R_ARM_TLS_GD32, 104) |
| 206 | RELOC_NUMBER (R_ARM_TLS_LDM32, 105) | |
| 207 | RELOC_NUMBER (R_ARM_TLS_LDO32, 106) | |
| 208 | RELOC_NUMBER (R_ARM_TLS_IE32, 107) | |
| 209 | RELOC_NUMBER (R_ARM_TLS_LE32, 108) | |
| 210 | RELOC_NUMBER (R_ARM_TLS_LDO12, 109) | |
| 211 | RELOC_NUMBER (R_ARM_TLS_LE12, 110) | |
| 212 | RELOC_NUMBER (R_ARM_TLS_IE12GP, 111) | |
| 213 | /* 112 - 127 private range */ | |
| 214 | RELOC_NUMBER (R_ARM_ME_TOO, 128) /* obsolete */ | |
| 215 | ||
| 216 | /* Extensions? R=read-only? */ | |
| 217 | RELOC_NUMBER (R_ARM_RXPC25, 249) | |
| 218 | RELOC_NUMBER (R_ARM_RSBREL32, 250) | |
| 219 | RELOC_NUMBER (R_ARM_THM_RPC22, 251) | |
| 220 | RELOC_NUMBER (R_ARM_RREL32, 252) | |
| 221 | RELOC_NUMBER (R_ARM_RABS32, 253) | |
| 222 | RELOC_NUMBER (R_ARM_RPC24, 254) | |
| 223 | RELOC_NUMBER (R_ARM_RBASE, 255) | |
| 224 | ||
| 225 | /* Unofficial names for some of the relocs. */ | |
| 226 | FAKE_RELOC (R_ARM_GOTOFF, R_ARM_GOTOFF32) /* 32 bit offset to GOT. */ | |
| 227 | FAKE_RELOC (R_ARM_THM_PC22, R_ARM_THM_CALL) | |
| 228 | FAKE_RELOC (R_ARM_THM_PC11, R_ARM_THM_JUMP11) | |
| 229 | FAKE_RELOC (R_ARM_THM_PC9, R_ARM_THM_JUMP8) | |
| 230 | ||
| 231 | /* Relocs with both a different name, and (apparently) different meaning in | |
| 232 | GNU usage. */ | |
| 233 | FAKE_RELOC (R_ARM_GOTPC, R_ARM_BASE_PREL) /* 32 bit PC relative offset to GOT. */ | |
| 234 | FAKE_RELOC (R_ARM_GOT32, R_ARM_GOT_BREL) /* 32 bit GOT entry. */ | |
| 235 | FAKE_RELOC (R_ARM_ROSEGREL32, R_ARM_SBREL31) /* ??? */ | |
| 236 | FAKE_RELOC (R_ARM_AMP_VCALL9, R_ARM_BREL_ADJ) /* Thumb-something. Not used. */ | |
| 7c90103b NC |
237 | |
| 238 | END_RELOC_NUMBERS (R_ARM_max = 256) | |
| 252b5132 | 239 | |
| ee065d83 | 240 | #ifdef BFD_ARCH_SIZE |
| 104d59d1 | 241 | /* EABI object attributes. */ |
| ee065d83 PB |
242 | |
| 243 | enum | |
| 244 | { | |
| 104d59d1 JM |
245 | /* 0-3 are generic. */ |
| 246 | Tag_CPU_raw_name = 4, | |
| ee065d83 PB |
247 | Tag_CPU_name, |
| 248 | Tag_CPU_arch, | |
| 249 | Tag_CPU_arch_profile, | |
| 250 | Tag_ARM_ISA_use, | |
| 251 | Tag_THUMB_ISA_use, | |
| 252 | Tag_VFP_arch, | |
| 253 | Tag_WMMX_arch, | |
| 254 | Tag_NEON_arch, | |
| 255 | Tag_PCS_config, | |
| 256 | Tag_ABI_PCS_R9_use, | |
| 257 | Tag_ABI_PCS_RW_data, | |
| 258 | Tag_ABI_PCS_RO_data, | |
| 259 | Tag_ABI_PCS_GOT_use, | |
| 260 | Tag_ABI_PCS_wchar_t, | |
| 261 | Tag_ABI_FP_rounding, | |
| 262 | Tag_ABI_FP_denormal, | |
| 263 | Tag_ABI_FP_exceptions, | |
| 264 | Tag_ABI_FP_user_exceptions, | |
| 265 | Tag_ABI_FP_number_model, | |
| 266 | Tag_ABI_align8_needed, | |
| 267 | Tag_ABI_align8_preserved, | |
| 268 | Tag_ABI_enum_size, | |
| 269 | Tag_ABI_HardFP_use, | |
| 270 | Tag_ABI_VFP_args, | |
| 271 | Tag_ABI_WMMX_args, | |
| 272 | Tag_ABI_optimization_goals, | |
| 273 | Tag_ABI_FP_optimization_goals, | |
| 104d59d1 | 274 | /* 32 is generic. */ |
| ee065d83 PB |
275 | }; |
| 276 | ||
| 277 | #endif | |
| 278 | ||
| e16bb312 | 279 | /* The name of the note section used to identify arm variants. */ |
| 5a6c6817 | 280 | #define ARM_NOTE_SECTION ".note.gnu.arm.ident" |
| 40a18ebd NC |
281 | |
| 282 | /* Special section names. */ | |
| 283 | #define ELF_STRING_ARM_unwind ".ARM.exidx" | |
| 284 | #define ELF_STRING_ARM_unwind_info ".ARM.extab" | |
| 285 | #define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx." | |
| 286 | #define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab." | |
| 287 | ||
| 8725b940 | 288 | #endif /* _ELF_ARM_H */ |