| [444] | 1 | /* PPC ELF support for BFD. |
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| 2 | Copyright 1995, 1996, 1998, 2000, 2001, 2002, 2003, 2005, 2007, 2008, |
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| 3 | 2009, 2010 Free Software Foundation, Inc. |
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| 4 | |
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| 5 | By Michael Meissner, Cygnus Support, <meissner@cygnus.com>, |
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| 6 | from information in the System V Application Binary Interface, |
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| 7 | PowerPC Processor Supplement and the PowerPC Embedded Application |
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| 8 | Binary Interface (eabi). |
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| 9 | |
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| 10 | This file is part of BFD, the Binary File Descriptor library. |
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| 11 | |
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| 12 | This program is free software; you can redistribute it and/or modify |
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| 13 | it under the terms of the GNU General Public License as published by |
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| 14 | the Free Software Foundation; either version 3 of the License, or |
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| 15 | (at your option) any later version. |
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| 16 | |
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| 17 | This program is distributed in the hope that it will be useful, |
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| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 20 | GNU General Public License for more details. |
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| 21 | |
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| 22 | You should have received a copy of the GNU General Public License |
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| 23 | along with this program; if not, write to the Free Software |
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| 24 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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| 25 | MA 02110-1301, USA. */ |
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| 26 | |
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| 27 | /* This file holds definitions specific to the PPC ELF ABI. Note |
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| 28 | that most of this is not actually implemented by BFD. */ |
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| 29 | |
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| 30 | #ifndef _ELF_PPC_H |
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| 31 | #define _ELF_PPC_H |
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| 32 | |
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| 33 | #include "elf/reloc-macros.h" |
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| 34 | |
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| 35 | /* Relocations. */ |
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| 36 | START_RELOC_NUMBERS (elf_ppc_reloc_type) |
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| 37 | RELOC_NUMBER (R_PPC_NONE, 0) |
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| 38 | RELOC_NUMBER (R_PPC_ADDR32, 1) |
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| 39 | RELOC_NUMBER (R_PPC_ADDR24, 2) |
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| 40 | RELOC_NUMBER (R_PPC_ADDR16, 3) |
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| 41 | RELOC_NUMBER (R_PPC_ADDR16_LO, 4) |
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| 42 | RELOC_NUMBER (R_PPC_ADDR16_HI, 5) |
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| 43 | RELOC_NUMBER (R_PPC_ADDR16_HA, 6) |
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| 44 | RELOC_NUMBER (R_PPC_ADDR14, 7) |
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| 45 | RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN, 8) |
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| 46 | RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN, 9) |
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| 47 | RELOC_NUMBER (R_PPC_REL24, 10) |
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| 48 | RELOC_NUMBER (R_PPC_REL14, 11) |
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| 49 | RELOC_NUMBER (R_PPC_REL14_BRTAKEN, 12) |
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| 50 | RELOC_NUMBER (R_PPC_REL14_BRNTAKEN, 13) |
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| 51 | RELOC_NUMBER (R_PPC_GOT16, 14) |
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| 52 | RELOC_NUMBER (R_PPC_GOT16_LO, 15) |
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| 53 | RELOC_NUMBER (R_PPC_GOT16_HI, 16) |
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| 54 | RELOC_NUMBER (R_PPC_GOT16_HA, 17) |
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| 55 | RELOC_NUMBER (R_PPC_PLTREL24, 18) |
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| 56 | RELOC_NUMBER (R_PPC_COPY, 19) |
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| 57 | RELOC_NUMBER (R_PPC_GLOB_DAT, 20) |
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| 58 | RELOC_NUMBER (R_PPC_JMP_SLOT, 21) |
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| 59 | RELOC_NUMBER (R_PPC_RELATIVE, 22) |
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| 60 | RELOC_NUMBER (R_PPC_LOCAL24PC, 23) |
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| 61 | RELOC_NUMBER (R_PPC_UADDR32, 24) |
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| 62 | RELOC_NUMBER (R_PPC_UADDR16, 25) |
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| 63 | RELOC_NUMBER (R_PPC_REL32, 26) |
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| 64 | RELOC_NUMBER (R_PPC_PLT32, 27) |
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| 65 | RELOC_NUMBER (R_PPC_PLTREL32, 28) |
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| 66 | RELOC_NUMBER (R_PPC_PLT16_LO, 29) |
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| 67 | RELOC_NUMBER (R_PPC_PLT16_HI, 30) |
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| 68 | RELOC_NUMBER (R_PPC_PLT16_HA, 31) |
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| 69 | RELOC_NUMBER (R_PPC_SDAREL16, 32) |
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| 70 | RELOC_NUMBER (R_PPC_SECTOFF, 33) |
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| 71 | RELOC_NUMBER (R_PPC_SECTOFF_LO, 34) |
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| 72 | RELOC_NUMBER (R_PPC_SECTOFF_HI, 35) |
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| 73 | RELOC_NUMBER (R_PPC_SECTOFF_HA, 36) |
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| 74 | RELOC_NUMBER (R_PPC_ADDR30, 37) |
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| 75 | |
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| 76 | #ifndef RELOC_MACROS_GEN_FUNC |
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| 77 | /* Fake relocations for branch stubs, only used internally by ld. */ |
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| 78 | RELOC_NUMBER (R_PPC_RELAX, 48) |
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| 79 | RELOC_NUMBER (R_PPC_RELAX_PLT, 49) |
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| 80 | RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50) |
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| 81 | #endif |
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| 82 | |
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| 83 | /* Relocs added to support TLS. */ |
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| 84 | RELOC_NUMBER (R_PPC_TLS, 67) |
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| 85 | RELOC_NUMBER (R_PPC_DTPMOD32, 68) |
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| 86 | RELOC_NUMBER (R_PPC_TPREL16, 69) |
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| 87 | RELOC_NUMBER (R_PPC_TPREL16_LO, 70) |
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| 88 | RELOC_NUMBER (R_PPC_TPREL16_HI, 71) |
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| 89 | RELOC_NUMBER (R_PPC_TPREL16_HA, 72) |
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| 90 | RELOC_NUMBER (R_PPC_TPREL32, 73) |
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| 91 | RELOC_NUMBER (R_PPC_DTPREL16, 74) |
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| 92 | RELOC_NUMBER (R_PPC_DTPREL16_LO, 75) |
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| 93 | RELOC_NUMBER (R_PPC_DTPREL16_HI, 76) |
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| 94 | RELOC_NUMBER (R_PPC_DTPREL16_HA, 77) |
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| 95 | RELOC_NUMBER (R_PPC_DTPREL32, 78) |
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| 96 | RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79) |
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| 97 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80) |
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| 98 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81) |
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| 99 | RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82) |
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| 100 | RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83) |
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| 101 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84) |
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| 102 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85) |
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| 103 | RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86) |
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| 104 | RELOC_NUMBER (R_PPC_GOT_TPREL16, 87) |
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| 105 | RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88) |
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| 106 | RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89) |
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| 107 | RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90) |
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| 108 | RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91) |
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| 109 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92) |
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| 110 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93) |
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| 111 | RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94) |
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| 112 | RELOC_NUMBER (R_PPC_TLSGD, 95) |
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| 113 | RELOC_NUMBER (R_PPC_TLSLD, 96) |
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| 114 | |
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| 115 | /* The remaining relocs are from the Embedded ELF ABI, and are not |
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| 116 | in the SVR4 ELF ABI. */ |
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| 117 | RELOC_NUMBER (R_PPC_EMB_NADDR32, 101) |
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| 118 | RELOC_NUMBER (R_PPC_EMB_NADDR16, 102) |
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| 119 | RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103) |
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| 120 | RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104) |
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| 121 | RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105) |
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| 122 | RELOC_NUMBER (R_PPC_EMB_SDAI16, 106) |
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| 123 | RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107) |
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| 124 | RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108) |
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| 125 | RELOC_NUMBER (R_PPC_EMB_SDA21, 109) |
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| 126 | RELOC_NUMBER (R_PPC_EMB_MRKREF, 110) |
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| 127 | RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111) |
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| 128 | RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112) |
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| 129 | RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113) |
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| 130 | RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114) |
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| 131 | RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115) |
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| 132 | RELOC_NUMBER (R_PPC_EMB_RELSDA, 116) |
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| 133 | |
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| 134 | /* PowerPC VLE relocations. */ |
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| 135 | RELOC_NUMBER (R_PPC_VLE_REL8, 216) |
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| 136 | RELOC_NUMBER (R_PPC_VLE_REL15, 217) |
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| 137 | RELOC_NUMBER (R_PPC_VLE_REL24, 218) |
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| 138 | RELOC_NUMBER (R_PPC_VLE_LO16A, 219) |
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| 139 | RELOC_NUMBER (R_PPC_VLE_LO16D, 220) |
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| 140 | RELOC_NUMBER (R_PPC_VLE_HI16A, 221) |
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| 141 | RELOC_NUMBER (R_PPC_VLE_HI16D, 222) |
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| 142 | RELOC_NUMBER (R_PPC_VLE_HA16A, 223) |
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| 143 | RELOC_NUMBER (R_PPC_VLE_HA16D, 224) |
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| 144 | RELOC_NUMBER (R_PPC_VLE_SDA21, 225) |
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| 145 | RELOC_NUMBER (R_PPC_VLE_SDA21_LO, 226) |
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| 146 | RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A, 227) |
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| 147 | RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D, 228) |
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| 148 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A, 229) |
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| 149 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D, 230) |
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| 150 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A, 231) |
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| 151 | RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D, 232) |
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| 152 | |
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| 153 | /* Support STT_GNU_IFUNC plt calls. */ |
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| 154 | RELOC_NUMBER (R_PPC_IRELATIVE, 248) |
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| 155 | |
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| 156 | /* These are GNU extensions used in PIC code sequences. */ |
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| 157 | RELOC_NUMBER (R_PPC_REL16, 249) |
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| 158 | RELOC_NUMBER (R_PPC_REL16_LO, 250) |
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| 159 | RELOC_NUMBER (R_PPC_REL16_HI, 251) |
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| 160 | RELOC_NUMBER (R_PPC_REL16_HA, 252) |
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| 161 | |
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| 162 | /* These are GNU extensions to enable C++ vtable garbage collection. */ |
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| 163 | RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253) |
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| 164 | RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254) |
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| 165 | |
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| 166 | /* This is a phony reloc to handle any old fashioned TOC16 references |
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| 167 | that may still be in object files. */ |
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| 168 | RELOC_NUMBER (R_PPC_TOC16, 255) |
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| 169 | |
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| 170 | END_RELOC_NUMBERS (R_PPC_max) |
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| 171 | |
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| 172 | #define IS_PPC_TLS_RELOC(R) \ |
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| 173 | ((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA) |
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| 174 | |
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| 175 | /* Specify the value of _GLOBAL_OFFSET_TABLE_. */ |
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| 176 | #define DT_PPC_GOT (DT_LOPROC) |
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| 177 | |
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| 178 | /* Specify that tls descriptors should be optimized. */ |
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| 179 | #define DT_PPC_TLSOPT (DT_LOPROC + 1) |
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| 180 | |
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| 181 | /* Processor specific flags for the ELF header e_flags field. */ |
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| 182 | |
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| 183 | #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */ |
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| 184 | |
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| 185 | #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */ |
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| 186 | #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */ |
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| 187 | |
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| 188 | /* Processor specific program headers, p_flags field. */ |
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| 189 | #define PF_PPC_VLE 0x10000000 /* PowerPC VLE. */ |
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| 190 | |
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| 191 | /* Processor specific section headers, sh_flags field. */ |
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| 192 | #define SHF_PPC_VLE 0x10000000 /* PowerPC VLE text section. */ |
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| 193 | |
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| 194 | /* Processor specific section headers, sh_type field. */ |
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| 195 | |
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| 196 | #define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \ |
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| 197 | entries in this section \ |
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| 198 | based on the address \ |
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| 199 | specified in the associated \ |
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| 200 | symbol table entry. */ |
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| 201 | |
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| 202 | /* Object attribute tags. */ |
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| 203 | enum |
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| 204 | { |
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| 205 | /* 0-3 are generic. */ |
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| 206 | Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for |
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| 207 | soft-float, 3 for single=precision |
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| 208 | hard-float; 0 for not tagged or not |
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| 209 | using any ABIs affected by the |
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| 210 | differences. */ |
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| 211 | |
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| 212 | /* Value 1 for general purpose registers only, 2 for AltiVec |
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| 213 | registers, 3 for SPE registers; 0 for not tagged or not using any |
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| 214 | ABIs affected by the differences. */ |
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| 215 | Tag_GNU_Power_ABI_Vector = 8, |
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| 216 | |
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| 217 | /* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, |
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| 218 | 2 for ABIs using memory; 0 for not tagged or not using any ABIs |
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| 219 | affected by the differences. */ |
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| 220 | Tag_GNU_Power_ABI_Struct_Return = 12 |
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| 221 | }; |
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| 222 | |
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| 223 | #endif /* _ELF_PPC_H */ |
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