| 1 | // powerpc.h -- ELF definitions specific to EM_PPC and EM_PPC64 -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2008-2019 Free Software Foundation, Inc. |
| 4 | // Written by David S. Miller <davem@davemloft.net>. |
| 5 | |
| 6 | // This file is part of elfcpp. |
| 7 | |
| 8 | // This program is free software; you can redistribute it and/or |
| 9 | // modify it under the terms of the GNU Library General Public License |
| 10 | // as published by the Free Software Foundation; either version 2, or |
| 11 | // (at your option) any later version. |
| 12 | |
| 13 | // In addition to the permissions in the GNU Library General Public |
| 14 | // License, the Free Software Foundation gives you unlimited |
| 15 | // permission to link the compiled version of this file into |
| 16 | // combinations with other programs, and to distribute those |
| 17 | // combinations without any restriction coming from the use of this |
| 18 | // file. (The Library Public License restrictions do apply in other |
| 19 | // respects; for example, they cover modification of the file, and |
| 20 | /// distribution when not linked into a combined executable.) |
| 21 | |
| 22 | // This program is distributed in the hope that it will be useful, but |
| 23 | // WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 25 | // Library General Public License for more details. |
| 26 | |
| 27 | // You should have received a copy of the GNU Library General Public |
| 28 | // License along with this program; if not, write to the Free Software |
| 29 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 30 | // 02110-1301, USA. |
| 31 | |
| 32 | #ifndef ELFCPP_POWERPC_H |
| 33 | #define ELFCPP_POWERPC_H |
| 34 | |
| 35 | namespace elfcpp |
| 36 | { |
| 37 | |
| 38 | // The relocation numbers for 32-bit and 64-bit powerpc are nearly |
| 39 | // identical. Therefore I've adopted the convention of using |
| 40 | // R_POWERPC_foo for values which are the same in R_PPC_* and R_PPC64_*. |
| 41 | // For relocations which are specific to the word size I will use |
| 42 | // R_PPC_foo or R_PPC64_foo. |
| 43 | enum |
| 44 | { |
| 45 | R_POWERPC_NONE = 0, |
| 46 | R_POWERPC_ADDR32 = 1, |
| 47 | R_POWERPC_ADDR24 = 2, |
| 48 | R_POWERPC_ADDR16 = 3, |
| 49 | R_POWERPC_ADDR16_LO = 4, |
| 50 | R_POWERPC_ADDR16_HI = 5, |
| 51 | R_POWERPC_ADDR16_HA = 6, |
| 52 | R_POWERPC_ADDR14 = 7, |
| 53 | R_POWERPC_ADDR14_BRTAKEN = 8, |
| 54 | R_POWERPC_ADDR14_BRNTAKEN = 9, |
| 55 | R_POWERPC_REL24 = 10, |
| 56 | R_POWERPC_REL14 = 11, |
| 57 | R_POWERPC_REL14_BRTAKEN = 12, |
| 58 | R_POWERPC_REL14_BRNTAKEN = 13, |
| 59 | R_POWERPC_GOT16 = 14, |
| 60 | R_POWERPC_GOT16_LO = 15, |
| 61 | R_POWERPC_GOT16_HI = 16, |
| 62 | R_POWERPC_GOT16_HA = 17, |
| 63 | R_PPC_PLTREL24 = 18, |
| 64 | R_POWERPC_COPY = 19, |
| 65 | R_POWERPC_GLOB_DAT = 20, |
| 66 | R_POWERPC_JMP_SLOT = 21, |
| 67 | R_POWERPC_RELATIVE = 22, |
| 68 | R_PPC_LOCAL24PC = 23, |
| 69 | R_POWERPC_UADDR32 = 24, |
| 70 | R_POWERPC_UADDR16 = 25, |
| 71 | R_POWERPC_REL32 = 26, |
| 72 | R_POWERPC_PLT32 = 27, |
| 73 | R_POWERPC_PLTREL32 = 28, |
| 74 | R_POWERPC_PLT16_LO = 29, |
| 75 | R_POWERPC_PLT16_HI = 30, |
| 76 | R_POWERPC_PLT16_HA = 31, |
| 77 | R_PPC_SDAREL16 = 32, |
| 78 | R_POWERPC_SECTOFF = 33, |
| 79 | R_POWERPC_SECTOFF_LO = 34, |
| 80 | R_POWERPC_SECTOFF_HI = 35, |
| 81 | R_POWERPC_SECTOFF_HA = 36, |
| 82 | R_POWERPC_ADDR30 = 37, |
| 83 | R_PPC64_ADDR64 = 38, |
| 84 | R_PPC64_ADDR16_HIGHER = 39, |
| 85 | R_PPC64_ADDR16_HIGHERA = 40, |
| 86 | R_PPC64_ADDR16_HIGHEST = 41, |
| 87 | R_PPC64_ADDR16_HIGHESTA = 42, |
| 88 | R_PPC64_UADDR64 = 43, |
| 89 | R_PPC64_REL64 = 44, |
| 90 | R_PPC64_PLT64 = 45, |
| 91 | R_PPC64_PLTREL64 = 46, |
| 92 | R_PPC64_TOC16 = 47, |
| 93 | R_PPC64_TOC16_LO = 48, |
| 94 | R_PPC64_TOC16_HI = 49, |
| 95 | R_PPC64_TOC16_HA = 50, |
| 96 | R_PPC64_TOC = 51, |
| 97 | R_PPC64_PLTGOT16 = 52, |
| 98 | R_PPC64_PLTGOT16_LO = 53, |
| 99 | R_PPC64_PLTGOT16_HI = 54, |
| 100 | R_PPC64_PLTGOT16_HA = 55, |
| 101 | R_PPC64_ADDR16_DS = 56, |
| 102 | R_PPC64_ADDR16_LO_DS = 57, |
| 103 | R_PPC64_GOT16_DS = 58, |
| 104 | R_PPC64_GOT16_LO_DS = 59, |
| 105 | R_PPC64_PLT16_LO_DS = 60, |
| 106 | R_PPC64_SECTOFF_DS = 61, |
| 107 | R_PPC64_SECTOFF_LO_DS = 62, |
| 108 | R_PPC64_TOC16_DS = 63, |
| 109 | R_PPC64_TOC16_LO_DS = 64, |
| 110 | R_PPC64_PLTGOT16_DS = 65, |
| 111 | R_PPC64_PLTGOT16_LO_DS = 66, |
| 112 | R_POWERPC_TLS = 67, |
| 113 | R_POWERPC_DTPMOD = 68, |
| 114 | R_POWERPC_TPREL16 = 69, |
| 115 | R_POWERPC_TPREL16_LO = 70, |
| 116 | R_POWERPC_TPREL16_HI = 71, |
| 117 | R_POWERPC_TPREL16_HA = 72, |
| 118 | R_POWERPC_TPREL = 73, |
| 119 | R_POWERPC_DTPREL16 = 74, |
| 120 | R_POWERPC_DTPREL16_LO = 75, |
| 121 | R_POWERPC_DTPREL16_HI = 76, |
| 122 | R_POWERPC_DTPREL16_HA = 77, |
| 123 | R_POWERPC_DTPREL = 78, |
| 124 | R_POWERPC_GOT_TLSGD16 = 79, |
| 125 | R_POWERPC_GOT_TLSGD16_LO = 80, |
| 126 | R_POWERPC_GOT_TLSGD16_HI = 81, |
| 127 | R_POWERPC_GOT_TLSGD16_HA = 82, |
| 128 | R_POWERPC_GOT_TLSLD16 = 83, |
| 129 | R_POWERPC_GOT_TLSLD16_LO = 84, |
| 130 | R_POWERPC_GOT_TLSLD16_HI = 85, |
| 131 | R_POWERPC_GOT_TLSLD16_HA = 86, |
| 132 | R_POWERPC_GOT_TPREL16 = 87, |
| 133 | R_POWERPC_GOT_TPREL16_LO = 88, |
| 134 | R_POWERPC_GOT_TPREL16_HI = 89, |
| 135 | R_POWERPC_GOT_TPREL16_HA = 90, |
| 136 | R_POWERPC_GOT_DTPREL16 = 91, |
| 137 | R_POWERPC_GOT_DTPREL16_LO = 92, |
| 138 | R_POWERPC_GOT_DTPREL16_HI = 93, |
| 139 | R_POWERPC_GOT_DTPREL16_HA = 94, |
| 140 | R_PPC_TLSGD = 95, |
| 141 | R_PPC64_TPREL16_DS = 95, |
| 142 | R_PPC_TLSLD = 96, |
| 143 | R_PPC64_TPREL16_LO_DS = 96, |
| 144 | R_PPC64_TPREL16_HIGHER = 97, |
| 145 | R_PPC64_TPREL16_HIGHERA = 98, |
| 146 | R_PPC64_TPREL16_HIGHEST = 99, |
| 147 | R_PPC64_TPREL16_HIGHESTA = 100, |
| 148 | R_PPC_EMB_NADDR32 = 101, |
| 149 | R_PPC64_DTPREL16_DS = 101, |
| 150 | R_PPC_EMB_NADDR16 = 102, |
| 151 | R_PPC64_DTPREL16_LO_DS = 102, |
| 152 | R_PPC_EMB_NADDR16_LO = 103, |
| 153 | R_PPC64_DTPREL16_HIGHER = 103, |
| 154 | R_PPC_EMB_NADDR16_HI = 104, |
| 155 | R_PPC64_DTPREL16_HIGHERA = 104, |
| 156 | R_PPC_EMB_NADDR16_HA = 105, |
| 157 | R_PPC64_DTPREL16_HIGHEST = 105, |
| 158 | R_PPC_EMB_SDAI16 = 106, |
| 159 | R_PPC64_DTPREL16_HIGHESTA = 106, |
| 160 | R_PPC_EMB_SDA2I16 = 107, |
| 161 | R_PPC64_TLSGD = 107, |
| 162 | R_PPC_EMB_SDA2REL = 108, |
| 163 | R_PPC64_TLSLD = 108, |
| 164 | R_PPC_EMB_SDA21 = 109, |
| 165 | R_PPC64_TOCSAVE = 109, |
| 166 | R_PPC_EMB_MRKREF = 110, |
| 167 | R_PPC64_ADDR16_HIGH = 110, |
| 168 | R_PPC_EMB_RELSEC16 = 111, |
| 169 | R_PPC64_ADDR16_HIGHA = 111, |
| 170 | R_PPC_EMB_RELST_LO = 112, |
| 171 | R_PPC64_TPREL16_HIGH = 112, |
| 172 | R_PPC_EMB_RELST_HI = 113, |
| 173 | R_PPC64_TPREL16_HIGHA = 113, |
| 174 | R_PPC_EMB_RELST_HA = 114, |
| 175 | R_PPC64_DTPREL16_HIGH = 114, |
| 176 | R_PPC_EMB_BIT_FLD = 115, |
| 177 | R_PPC64_DTPREL16_HIGHA = 115, |
| 178 | R_PPC_EMB_RELSDA = 116, |
| 179 | R_PPC64_REL24_NOTOC = 116, |
| 180 | R_PPC64_ADDR64_LOCAL = 117, |
| 181 | R_PPC64_ENTRY = 118, |
| 182 | R_POWERPC_PLTSEQ = 119, |
| 183 | R_POWERPC_PLTCALL = 120, |
| 184 | |
| 185 | R_PPC_VLE_REL8 = 216, |
| 186 | R_PPC_VLE_REL15 = 217, |
| 187 | R_PPC_VLE_REL24 = 218, |
| 188 | R_PPC_VLE_LO16A = 219, |
| 189 | R_PPC_VLE_LO16D = 220, |
| 190 | R_PPC_VLE_HI16A = 221, |
| 191 | R_PPC_VLE_HI16D = 222, |
| 192 | R_PPC_VLE_HA16A = 223, |
| 193 | R_PPC_VLE_HA16D = 224, |
| 194 | R_PPC_VLE_SDA21 = 225, |
| 195 | R_PPC_VLE_SDA21_LO = 226, |
| 196 | R_PPC_VLE_SDAREL_LO16A = 227, |
| 197 | R_PPC_VLE_SDAREL_LO16D = 228, |
| 198 | R_PPC_VLE_SDAREL_HI16A = 229, |
| 199 | R_PPC_VLE_SDAREL_HI16D = 230, |
| 200 | R_PPC_VLE_SDAREL_HA16A = 231, |
| 201 | R_PPC_VLE_SDAREL_HA16D = 232, |
| 202 | |
| 203 | R_POWERPC_REL16DX_HA = 246, |
| 204 | R_PPC64_JMP_IREL = 247, |
| 205 | R_POWERPC_IRELATIVE = 248, |
| 206 | R_POWERPC_REL16 = 249, |
| 207 | R_POWERPC_REL16_LO = 250, |
| 208 | R_POWERPC_REL16_HI = 251, |
| 209 | R_POWERPC_REL16_HA = 252, |
| 210 | R_POWERPC_GNU_VTINHERIT = 253, |
| 211 | R_POWERPC_GNU_VTENTRY = 254, |
| 212 | R_PPC_TOC16 = 255, |
| 213 | }; |
| 214 | |
| 215 | // e_flags values defined for powerpc |
| 216 | enum |
| 217 | { |
| 218 | EF_PPC_EMB = 0x80000000, // PowerPC embedded flag. |
| 219 | EF_PPC_RELOCATABLE = 0x00010000, // PowerPC -mrelocatable flag. */ |
| 220 | EF_PPC_RELOCATABLE_LIB = 0x00008000, // PowerPC -mrelocatable-lib flag. */ |
| 221 | }; |
| 222 | |
| 223 | // e_flags values defined for powerpc64 |
| 224 | enum |
| 225 | { |
| 226 | // ABI version |
| 227 | // 1 for original function descriptor using ABI, |
| 228 | // 2 for revised ABI without function descriptors, |
| 229 | // 0 for unspecified or not using any features affected by the differences. |
| 230 | EF_PPC64_ABI = 3 |
| 231 | }; |
| 232 | |
| 233 | // Object attribute tags. 0-3 are generic. |
| 234 | enum |
| 235 | { |
| 236 | // FP ABI, low 2 bits: |
| 237 | // 1 for double precision hard-float, |
| 238 | // 2 for soft-float, |
| 239 | // 3 for single precision hard-float. |
| 240 | // 0 for not tagged or not using any ABIs affected by the differences. |
| 241 | // Next 2 bits: |
| 242 | // 1 for ibm long double |
| 243 | // 2 for 64-bit long double |
| 244 | // 3 for IEEE long double. |
| 245 | // 0 for not tagged or not using any ABIs affected by the differences. |
| 246 | Tag_GNU_Power_ABI_FP = 4, |
| 247 | |
| 248 | // Value 1 for general purpose registers only, 2 for AltiVec |
| 249 | // registers, 3 for SPE registers; 0 for not tagged or not using any |
| 250 | // ABIs affected by the differences. |
| 251 | Tag_GNU_Power_ABI_Vector = 8, |
| 252 | |
| 253 | // Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, |
| 254 | // 2 for ABIs using memory; 0 for not tagged or not using any ABIs |
| 255 | // affected by the differences. |
| 256 | Tag_GNU_Power_ABI_Struct_Return = 12 |
| 257 | }; |
| 258 | |
| 259 | // DT_PPC_OPT bits |
| 260 | enum |
| 261 | { |
| 262 | PPC_OPT_TLS = 1 |
| 263 | }; |
| 264 | |
| 265 | // DT_PPC64_OPT bits |
| 266 | enum |
| 267 | { |
| 268 | PPC64_OPT_TLS = 1, |
| 269 | PPC64_OPT_MULTI_TOC = 2, |
| 270 | PPC64_OPT_LOCALENTRY = 4 |
| 271 | }; |
| 272 | |
| 273 | enum |
| 274 | { |
| 275 | // The ELFv2 ABI uses three bits in the symbol st_other field of a |
| 276 | // function definition to specify the number of instructions between a |
| 277 | // function's global entry point and local entry point. |
| 278 | // The global entry point is used when it is necessary to set up the |
| 279 | // toc pointer (r2) for the function. Callers must enter the global |
| 280 | // entry point with r12 set to the global entry point address. On |
| 281 | // return from the function, r2 may have a different value to that |
| 282 | // which it had on entry. |
| 283 | // The local entry point is used when r2 is known to already be valid |
| 284 | // for the function. There is no requirement on r12 when using the |
| 285 | // local entry point, and on return r2 will contain the same value as |
| 286 | // at entry. |
| 287 | // A value of zero in these bits means that the function has a single |
| 288 | // entry point with no requirement on r12 or r2, and that on return r2 |
| 289 | // will contain the same value as at entry. |
| 290 | // Values of one and seven are reserved. |
| 291 | |
| 292 | STO_PPC64_LOCAL_BIT = 5, |
| 293 | STO_PPC64_LOCAL_MASK = 0xE0 |
| 294 | }; |
| 295 | |
| 296 | // 3 bit other field to bytes. |
| 297 | static inline unsigned int |
| 298 | ppc64_decode_local_entry(unsigned int other) |
| 299 | { |
| 300 | return ((1 << other) >> 2) << 2; |
| 301 | } |
| 302 | |
| 303 | // bytes to field value. |
| 304 | static inline unsigned int |
| 305 | ppc64_encode_local_entry(unsigned int val) |
| 306 | { |
| 307 | return (val >= 4 * 4 |
| 308 | ? (val >= 8 * 4 |
| 309 | ? (val >= 16 * 4 ? 6 : 5) |
| 310 | : 4) |
| 311 | : (val >= 2 * 4 |
| 312 | ? 3 |
| 313 | : (val >= 1 * 4 ? 2 : 0))); |
| 314 | } |
| 315 | |
| 316 | } // End namespace elfcpp. |
| 317 | |
| 318 | #endif // !defined(ELFCPP_POWERPC_H) |