1/* PPC ELF support for BFD. 2 Copyright (C) 1995-2022 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. */ 35START_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 181END_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. */ 228enum 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 */ 256