1 /* PPC ELF support for BFD. 2 Copyright (C) 1995-2016 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 /* Fake relocations for branch stubs, only used internally by ld. */ 77 RELOC_NUMBER (R_PPC_RELAX, 48) 78 RELOC_NUMBER (R_PPC_RELAX_PLT, 49) 79 RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50) 80 #endif 81 82 /* Relocs added to support TLS. */ 83 RELOC_NUMBER (R_PPC_TLS, 67) 84 RELOC_NUMBER (R_PPC_DTPMOD32, 68) 85 RELOC_NUMBER (R_PPC_TPREL16, 69) 86 RELOC_NUMBER (R_PPC_TPREL16_LO, 70) 87 RELOC_NUMBER (R_PPC_TPREL16_HI, 71) 88 RELOC_NUMBER (R_PPC_TPREL16_HA, 72) 89 RELOC_NUMBER (R_PPC_TPREL32, 73) 90 RELOC_NUMBER (R_PPC_DTPREL16, 74) 91 RELOC_NUMBER (R_PPC_DTPREL16_LO, 75) 92 RELOC_NUMBER (R_PPC_DTPREL16_HI, 76) 93 RELOC_NUMBER (R_PPC_DTPREL16_HA, 77) 94 RELOC_NUMBER (R_PPC_DTPREL32, 78) 95 RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79) 96 RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80) 97 RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81) 98 RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82) 99 RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83) 100 RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84) 101 RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85) 102 RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86) 103 RELOC_NUMBER (R_PPC_GOT_TPREL16, 87) 104 RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88) 105 RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89) 106 RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90) 107 RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91) 108 RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92) 109 RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93) 110 RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94) 111 RELOC_NUMBER (R_PPC_TLSGD, 95) 112 RELOC_NUMBER (R_PPC_TLSLD, 96) 113 114 /* The remaining relocs are from the Embedded ELF ABI, and are not 115 in the SVR4 ELF ABI. */ 116 RELOC_NUMBER (R_PPC_EMB_NADDR32, 101) 117 RELOC_NUMBER (R_PPC_EMB_NADDR16, 102) 118 RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103) 119 RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104) 120 RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105) 121 RELOC_NUMBER (R_PPC_EMB_SDAI16, 106) 122 RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107) 123 RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108) 124 RELOC_NUMBER (R_PPC_EMB_SDA21, 109) 125 RELOC_NUMBER (R_PPC_EMB_MRKREF, 110) 126 RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111) 127 RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112) 128 RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113) 129 RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114) 130 RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115) 131 RELOC_NUMBER (R_PPC_EMB_RELSDA, 116) 132 133 /* PowerPC VLE relocations. */ 134 RELOC_NUMBER (R_PPC_VLE_REL8, 216) 135 RELOC_NUMBER (R_PPC_VLE_REL15, 217) 136 RELOC_NUMBER (R_PPC_VLE_REL24, 218) 137 RELOC_NUMBER (R_PPC_VLE_LO16A, 219) 138 RELOC_NUMBER (R_PPC_VLE_LO16D, 220) 139 RELOC_NUMBER (R_PPC_VLE_HI16A, 221) 140 RELOC_NUMBER (R_PPC_VLE_HI16D, 222) 141 RELOC_NUMBER (R_PPC_VLE_HA16A, 223) 142 RELOC_NUMBER (R_PPC_VLE_HA16D, 224) 143 RELOC_NUMBER (R_PPC_VLE_SDA21, 225) 144 RELOC_NUMBER (R_PPC_VLE_SDA21_LO, 226) 145 RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A, 227) 146 RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D, 228) 147 RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A, 229) 148 RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D, 230) 149 RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A, 231) 150 RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D, 232) 151 152 /* Power9 split rel16 for addpcis. */ 153 RELOC_NUMBER (R_PPC_REL16DX_HA, 246) 154 155 /* Support STT_GNU_IFUNC plt calls. */ 156 RELOC_NUMBER (R_PPC_IRELATIVE, 248) 157 158 /* These are GNU extensions used in PIC code sequences. */ 159 RELOC_NUMBER (R_PPC_REL16, 249) 160 RELOC_NUMBER (R_PPC_REL16_LO, 250) 161 RELOC_NUMBER (R_PPC_REL16_HI, 251) 162 RELOC_NUMBER (R_PPC_REL16_HA, 252) 163 164 /* These are GNU extensions to enable C++ vtable garbage collection. */ 165 RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253) 166 RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254) 167 168 /* This is a phony reloc to handle any old fashioned TOC16 references 169 that may still be in object files. */ 170 RELOC_NUMBER (R_PPC_TOC16, 255) 171 172 END_RELOC_NUMBERS (R_PPC_max) 173 174 #define IS_PPC_TLS_RELOC(R) \ 175 ((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA) 176 177 /* Specify the value of _GLOBAL_OFFSET_TABLE_. */ 178 #define DT_PPC_GOT (DT_LOPROC) 179 180 /* Specify that tls descriptors should be optimized. */ 181 #define DT_PPC_OPT (DT_LOPROC + 1) 182 #define PPC_OPT_TLS 1 183 184 /* Processor specific flags for the ELF header e_flags field. */ 185 186 #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */ 187 188 #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */ 189 #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */ 190 191 /* Processor specific program headers, p_flags field. */ 192 #define PF_PPC_VLE 0x10000000 /* PowerPC VLE. */ 193 194 /* Processor specific section headers, sh_flags field. */ 195 #define SHF_PPC_VLE 0x10000000 /* PowerPC VLE text section. */ 196 197 /* Processor specific section headers, sh_type field. */ 198 199 #define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \ 200 entries in this section \ 201 based on the address \ 202 specified in the associated \ 203 symbol table entry. */ 204 205 /* APUinfo note section. */ 206 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo" 207 #define APUINFO_LABEL "APUinfo" 208 209 #define PPC_APUINFO_ISEL 0x40 210 #define PPC_APUINFO_PMR 0x41 211 #define PPC_APUINFO_RFMCI 0x42 212 #define PPC_APUINFO_CACHELCK 0x43 213 #define PPC_APUINFO_SPE 0x100 214 #define PPC_APUINFO_EFS 0x101 215 #define PPC_APUINFO_BRLOCK 0x102 216 #define PPC_APUINFO_VLE 0x104 217 218 /* Object attribute tags. */ 219 enum 220 { 221 /* 0-3 are generic. */ 222 Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for 223 soft-float, 3 for single=precision 224 hard-float; 0 for not tagged or not 225 using any ABIs affected by the 226 differences. */ 227 228 /* Value 1 for general purpose registers only, 2 for AltiVec 229 registers, 3 for SPE registers; 0 for not tagged or not using any 230 ABIs affected by the differences. */ 231 Tag_GNU_Power_ABI_Vector = 8, 232 233 /* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, 234 2 for ABIs using memory; 0 for not tagged or not using any ABIs 235 affected by the differences. */ 236 Tag_GNU_Power_ABI_Struct_Return = 12 237 }; 238 239 #endif /* _ELF_PPC_H */ 240