| 1 | /* PPC ELF support for BFD. |
| 2 | Copyright (C) 1995-2019 Free Software Foundation, Inc. |
| 3 | |
| 4 | By Michael Meissner, Cygnus Support, <meissner@cygnus.com>, |
| 5 | from information in the System V Application Binary Interface, |
| 6 | PowerPC Processor Supplement and the PowerPC Embedded Application |
| 7 | Binary Interface (eabi). |
| 8 | |
| 9 | This file is part of BFD, the Binary File Descriptor library. |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 3 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program; if not, write to the Free Software |
| 23 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 24 | MA 02110-1301, USA. */ |
| 25 | |
| 26 | /* This file holds definitions specific to the PPC ELF ABI. Note |
| 27 | that most of this is not actually implemented by BFD. */ |
| 28 | |
| 29 | #ifndef _ELF_PPC_H |
| 30 | #define _ELF_PPC_H |
| 31 | |
| 32 | #include "elf/reloc-macros.h" |
| 33 | |
| 34 | /* Relocations. */ |
| 35 | START_RELOC_NUMBERS (elf_ppc_reloc_type) |
| 36 | RELOC_NUMBER (R_PPC_NONE, 0) |
| 37 | RELOC_NUMBER (R_PPC_ADDR32, 1) |
| 38 | RELOC_NUMBER (R_PPC_ADDR24, 2) |
| 39 | RELOC_NUMBER (R_PPC_ADDR16, 3) |
| 40 | RELOC_NUMBER (R_PPC_ADDR16_LO, 4) |
| 41 | RELOC_NUMBER (R_PPC_ADDR16_HI, 5) |
| 42 | RELOC_NUMBER (R_PPC_ADDR16_HA, 6) |
| 43 | RELOC_NUMBER (R_PPC_ADDR14, 7) |
| 44 | RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN, 8) |
| 45 | RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN, 9) |
| 46 | RELOC_NUMBER (R_PPC_REL24, 10) |
| 47 | RELOC_NUMBER (R_PPC_REL14, 11) |
| 48 | RELOC_NUMBER (R_PPC_REL14_BRTAKEN, 12) |
| 49 | RELOC_NUMBER (R_PPC_REL14_BRNTAKEN, 13) |
| 50 | RELOC_NUMBER (R_PPC_GOT16, 14) |
| 51 | RELOC_NUMBER (R_PPC_GOT16_LO, 15) |
| 52 | RELOC_NUMBER (R_PPC_GOT16_HI, 16) |
| 53 | RELOC_NUMBER (R_PPC_GOT16_HA, 17) |
| 54 | RELOC_NUMBER (R_PPC_PLTREL24, 18) |
| 55 | RELOC_NUMBER (R_PPC_COPY, 19) |
| 56 | RELOC_NUMBER (R_PPC_GLOB_DAT, 20) |
| 57 | RELOC_NUMBER (R_PPC_JMP_SLOT, 21) |
| 58 | RELOC_NUMBER (R_PPC_RELATIVE, 22) |
| 59 | RELOC_NUMBER (R_PPC_LOCAL24PC, 23) |
| 60 | RELOC_NUMBER (R_PPC_UADDR32, 24) |
| 61 | RELOC_NUMBER (R_PPC_UADDR16, 25) |
| 62 | RELOC_NUMBER (R_PPC_REL32, 26) |
| 63 | RELOC_NUMBER (R_PPC_PLT32, 27) |
| 64 | RELOC_NUMBER (R_PPC_PLTREL32, 28) |
| 65 | RELOC_NUMBER (R_PPC_PLT16_LO, 29) |
| 66 | RELOC_NUMBER (R_PPC_PLT16_HI, 30) |
| 67 | RELOC_NUMBER (R_PPC_PLT16_HA, 31) |
| 68 | RELOC_NUMBER (R_PPC_SDAREL16, 32) |
| 69 | RELOC_NUMBER (R_PPC_SECTOFF, 33) |
| 70 | RELOC_NUMBER (R_PPC_SECTOFF_LO, 34) |
| 71 | RELOC_NUMBER (R_PPC_SECTOFF_HI, 35) |
| 72 | RELOC_NUMBER (R_PPC_SECTOFF_HA, 36) |
| 73 | RELOC_NUMBER (R_PPC_ADDR30, 37) |
| 74 | |
| 75 | #ifndef RELOC_MACROS_GEN_FUNC |
| 76 | /* Relocations only used internally by ld. If you need to use these |
| 77 | reloc numbers, you can change them to some other unused value |
| 78 | without affecting the ABI. They will never appear in object files. */ |
| 79 | RELOC_NUMBER (R_PPC_RELAX, 48) |
| 80 | RELOC_NUMBER (R_PPC_RELAX_PLT, 49) |
| 81 | RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50) |
| 82 | /* Reloc only used internally by gas. As above, value is unimportant. */ |
| 83 | RELOC_NUMBER (R_PPC_16DX_HA, 51) |
| 84 | #endif |
| 85 | |
| 86 | /* Relocs added to support TLS. */ |
| 87 | RELOC_NUMBER (R_PPC_TLS, 67) |
| 88 | RELOC_NUMBER (R_PPC_DTPMOD32, 68) |
| 89 | RELOC_NUMBER (R_PPC_TPREL16, 69) |
| 90 | RELOC_NUMBER (R_PPC_TPREL16_LO, 70) |
| 91 | RELOC_NUMBER (R_PPC_TPREL16_HI, 71) |
| 92 | RELOC_NUMBER (R_PPC_TPREL16_HA, 72) |
| 93 | RELOC_NUMBER (R_PPC_TPREL32, 73) |
| 94 | RELOC_NUMBER (R_PPC_DTPREL16, 74) |
| 95 | RELOC_NUMBER (R_PPC_DTPREL16_LO, 75) |
| 96 | RELOC_NUMBER (R_PPC_DTPREL16_HI, 76) |
| 97 | RELOC_NUMBER (R_PPC_DTPREL16_HA, 77) |
| 98 | RELOC_NUMBER (R_PPC_DTPREL32, 78) |
| 99 | RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79) |
| 100 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80) |
| 101 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81) |
| 102 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82) |
| 103 | RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83) |
| 104 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84) |
| 105 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85) |
| 106 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86) |
| 107 | RELOC_NUMBER (R_PPC_GOT_TPREL16, 87) |
| 108 | RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88) |
| 109 | RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89) |
| 110 | RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90) |
| 111 | RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91) |
| 112 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92) |
| 113 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93) |
| 114 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94) |
| 115 | RELOC_NUMBER (R_PPC_TLSGD, 95) |
| 116 | RELOC_NUMBER (R_PPC_TLSLD, 96) |
| 117 | |
| 118 | /* The remaining relocs are from the Embedded ELF ABI, and are not |
| 119 | in the SVR4 ELF ABI. */ |
| 120 | RELOC_NUMBER (R_PPC_EMB_NADDR32, 101) |
| 121 | RELOC_NUMBER (R_PPC_EMB_NADDR16, 102) |
| 122 | RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103) |
| 123 | RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104) |
| 124 | RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105) |
| 125 | RELOC_NUMBER (R_PPC_EMB_SDAI16, 106) |
| 126 | RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107) |
| 127 | RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108) |
| 128 | RELOC_NUMBER (R_PPC_EMB_SDA21, 109) |
| 129 | RELOC_NUMBER (R_PPC_EMB_MRKREF, 110) |
| 130 | RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111) |
| 131 | RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112) |
| 132 | RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113) |
| 133 | RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114) |
| 134 | RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115) |
| 135 | RELOC_NUMBER (R_PPC_EMB_RELSDA, 116) |
| 136 | |
| 137 | /* Marker reloc for inline plt call insns. */ |
| 138 | RELOC_NUMBER (R_PPC_PLTSEQ, 119) |
| 139 | RELOC_NUMBER (R_PPC_PLTCALL, 120) |
| 140 | |
| 141 | /* PowerPC VLE relocations. */ |
| 142 | RELOC_NUMBER (R_PPC_VLE_REL8, 216) |
| 143 | RELOC_NUMBER (R_PPC_VLE_REL15, 217) |
| 144 | RELOC_NUMBER (R_PPC_VLE_REL24, 218) |
| 145 | RELOC_NUMBER (R_PPC_VLE_LO16A, 219) |
| 146 | RELOC_NUMBER (R_PPC_VLE_LO16D, 220) |
| 147 | RELOC_NUMBER (R_PPC_VLE_HI16A, 221) |
| 148 | RELOC_NUMBER (R_PPC_VLE_HI16D, 222) |
| 149 | RELOC_NUMBER (R_PPC_VLE_HA16A, 223) |
| 150 | RELOC_NUMBER (R_PPC_VLE_HA16D, 224) |
| 151 | RELOC_NUMBER (R_PPC_VLE_SDA21, 225) |
| 152 | RELOC_NUMBER (R_PPC_VLE_SDA21_LO, 226) |
| 153 | RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A, 227) |
| 154 | RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D, 228) |
| 155 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A, 229) |
| 156 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D, 230) |
| 157 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A, 231) |
| 158 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D, 232) |
| 159 | RELOC_NUMBER (R_PPC_VLE_ADDR20, 233) |
| 160 | |
| 161 | /* Power9 split rel16 for addpcis. */ |
| 162 | RELOC_NUMBER (R_PPC_REL16DX_HA, 246) |
| 163 | |
| 164 | /* Support STT_GNU_IFUNC plt calls. */ |
| 165 | RELOC_NUMBER (R_PPC_IRELATIVE, 248) |
| 166 | |
| 167 | /* These are GNU extensions used in PIC code sequences. */ |
| 168 | RELOC_NUMBER (R_PPC_REL16, 249) |
| 169 | RELOC_NUMBER (R_PPC_REL16_LO, 250) |
| 170 | RELOC_NUMBER (R_PPC_REL16_HI, 251) |
| 171 | RELOC_NUMBER (R_PPC_REL16_HA, 252) |
| 172 | |
| 173 | /* These are GNU extensions to enable C++ vtable garbage collection. */ |
| 174 | RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253) |
| 175 | RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254) |
| 176 | |
| 177 | /* This is a phony reloc to handle any old fashioned TOC16 references |
| 178 | that may still be in object files. */ |
| 179 | RELOC_NUMBER (R_PPC_TOC16, 255) |
| 180 | |
| 181 | END_RELOC_NUMBERS (R_PPC_max) |
| 182 | |
| 183 | #define IS_PPC_TLS_RELOC(R) \ |
| 184 | ((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA) |
| 185 | |
| 186 | /* Specify the value of _GLOBAL_OFFSET_TABLE_. */ |
| 187 | #define DT_PPC_GOT (DT_LOPROC) |
| 188 | |
| 189 | /* Specify that tls descriptors should be optimized. */ |
| 190 | #define DT_PPC_OPT (DT_LOPROC + 1) |
| 191 | #define PPC_OPT_TLS 1 |
| 192 | |
| 193 | /* Processor specific flags for the ELF header e_flags field. */ |
| 194 | |
| 195 | #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */ |
| 196 | |
| 197 | #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */ |
| 198 | #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */ |
| 199 | |
| 200 | /* Processor specific program headers, p_flags field. */ |
| 201 | #define PF_PPC_VLE 0x10000000 /* PowerPC VLE. */ |
| 202 | |
| 203 | /* Processor specific section headers, sh_flags field. */ |
| 204 | #define SHF_PPC_VLE 0x10000000 /* PowerPC VLE text section. */ |
| 205 | |
| 206 | /* Processor specific section headers, sh_type field. */ |
| 207 | |
| 208 | #define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \ |
| 209 | entries in this section \ |
| 210 | based on the address \ |
| 211 | specified in the associated \ |
| 212 | symbol table entry. */ |
| 213 | |
| 214 | /* APUinfo note section. */ |
| 215 | #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" |
| 216 | #define APUINFO_LABEL "APUinfo" |
| 217 | |
| 218 | #define PPC_APUINFO_ISEL 0x40 |
| 219 | #define PPC_APUINFO_PMR 0x41 |
| 220 | #define PPC_APUINFO_RFMCI 0x42 |
| 221 | #define PPC_APUINFO_CACHELCK 0x43 |
| 222 | #define PPC_APUINFO_SPE 0x100 |
| 223 | #define PPC_APUINFO_EFS 0x101 |
| 224 | #define PPC_APUINFO_BRLOCK 0x102 |
| 225 | #define PPC_APUINFO_VLE 0x104 |
| 226 | |
| 227 | /* Object attribute tags. */ |
| 228 | enum |
| 229 | { |
| 230 | /* 0-3 are generic. */ |
| 231 | |
| 232 | /* FP ABI, low 2 bits: |
| 233 | 1 for double precision hard-float, |
| 234 | 2 for soft-float, |
| 235 | 3 for single precision hard-float. |
| 236 | 0 for not tagged or not using any ABIs affected by the differences. |
| 237 | Next 2 bits: |
| 238 | 1 for ibm long double |
| 239 | 2 for 64-bit long double |
| 240 | 3 for IEEE long double. |
| 241 | 0 for not tagged or not using any ABIs affected by the differences. */ |
| 242 | Tag_GNU_Power_ABI_FP = 4, |
| 243 | |
| 244 | /* Value 1 for general purpose registers only, 2 for AltiVec |
| 245 | registers, 3 for SPE registers; 0 for not tagged or not using any |
| 246 | ABIs affected by the differences. */ |
| 247 | Tag_GNU_Power_ABI_Vector = 8, |
| 248 | |
| 249 | /* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, |
| 250 | 2 for ABIs using memory; 0 for not tagged or not using any ABIs |
| 251 | affected by the differences. */ |
| 252 | Tag_GNU_Power_ABI_Struct_Return = 12 |
| 253 | }; |
| 254 | |
| 255 | #endif /* _ELF_PPC_H */ |