1 /* CRIS ELF support for BFD. 2 Copyright (C) 2000-2014 Free Software Foundation, Inc. 3 Contributed by Axis Communications AB, Lund, Sweden. 4 Written by Hans-Peter Nilsson. 5 6 This file is part of BFD, the Binary File Descriptor library. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software Foundation, 20 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 21 22 #ifndef _ELF_CRIS_H 23 #define _ELF_CRIS_H 24 25 #include "elf/reloc-macros.h" 26 27 /* Relocations. */ 28 START_RELOC_NUMBERS (elf_cris_reloc_type) 29 RELOC_NUMBER (R_CRIS_NONE, 0) 30 RELOC_NUMBER (R_CRIS_8, 1) 31 RELOC_NUMBER (R_CRIS_16, 2) 32 RELOC_NUMBER (R_CRIS_32, 3) 33 34 /* The "PC" position is the location right after the relocation. */ 35 RELOC_NUMBER (R_CRIS_8_PCREL, 4) 36 RELOC_NUMBER (R_CRIS_16_PCREL, 5) 37 RELOC_NUMBER (R_CRIS_32_PCREL, 6) 38 39 RELOC_NUMBER (R_CRIS_GNU_VTINHERIT, 7) 40 RELOC_NUMBER (R_CRIS_GNU_VTENTRY, 8) 41 42 /* Copy contents at dynlinking. Generated by the linker. 43 The BFD equivalent is BFD_RELOC_CRIS_COPY. */ 44 RELOC_NUMBER (R_CRIS_COPY, 9) 45 46 /* Create GOT entry. Generated by the linker. 47 The BFD equivalent is BFD_RELOC_CRIS_GLOB_DAT. */ 48 RELOC_NUMBER (R_CRIS_GLOB_DAT, 10) 49 50 /* Create PLT entry. Generated by the linker. 51 The BFD equivalent is BFD_RELOC_CRIS_JUMP_SLOT. */ 52 RELOC_NUMBER (R_CRIS_JUMP_SLOT, 11) 53 54 /* Adjust by program base. Generated by the linker. 55 The BFD equivalent is BFD_RELOC_CRIS_RELATIVE. */ 56 RELOC_NUMBER (R_CRIS_RELATIVE, 12) 57 58 /* A 16-bit offset to entry in GOT and request to create GOT entry for 59 that symbol. 60 The BFD equivalent is BFD_RELOC_CRIS_16_GOT. */ 61 RELOC_NUMBER (R_CRIS_16_GOT, 13) 62 63 /* A 32-bit offset to entry in GOT and request to create GOT entry for 64 that symbol. 65 The BFD equivalent is BFD_RELOC_CRIS_32_GOT. */ 66 RELOC_NUMBER (R_CRIS_32_GOT, 14) 67 68 /* A 16-bit offset to entry in PLT part of GOT and request to create PLT 69 entry for that symbol. 70 The BFD equivalent is BFD_RELOC_CRIS_16_GOTPLT. */ 71 RELOC_NUMBER (R_CRIS_16_GOTPLT, 15) 72 73 /* A 32-bit offset to entry in PLT part of GOT and request to create PLT 74 entry for that symbol. 75 The BFD equivalent is BFD_RELOC_CRIS_32_GOTPLT. */ 76 RELOC_NUMBER (R_CRIS_32_GOTPLT, 16) 77 78 /* A 32-bit offset from GOT to (local) symbol: no GOT entry should be 79 necessary. 80 The BFD equivalent is BFD_RELOC_CRIS_32_GOTREL. */ 81 RELOC_NUMBER (R_CRIS_32_GOTREL, 17) 82 83 /* A 32-bit offset from GOT to entry for this symbol in PLT and request 84 to create PLT entry for symbol. 85 The BFD equivalent is BFD_RELOC_CRIS_32_GOTREL. */ 86 RELOC_NUMBER (R_CRIS_32_PLT_GOTREL, 18) 87 88 /* A 32-bit offset from location after this relocation (addend specifies 89 offset) to entry for this symbol in PLT and request to create PLT 90 entry for symbol. 91 The BFD equivalent is BFD_RELOC_CRIS_32_PLT_PCREL. */ 92 RELOC_NUMBER (R_CRIS_32_PLT_PCREL, 19) 93 94 /* An assembler-generated-only relocation, instructing the linker to 95 reserve two GOT slots, carrying the R_CRIS_DTP relocation for the 96 symbol (pointing to the first slot, the relocation fills in 97 both). The value is a 32-bit-value, relative to the start of the 98 GOT. Assembly syntax: "sym:GDGOTREL". */ 99 RELOC_NUMBER (R_CRIS_32_GOT_GD, 20) 100 101 /* Similar to R_CRIS_32_GOT_GD, but the value is a 16-bit unsigned 102 number, limiting access to 65536/4 global symbols per module (or 103 65536/8 thread variables; loosely speaking G*4+T*8 < 65536, where 104 T is the number of thread variables and G is the number of other 105 external global variables and functions). Assembly syntax: 106 "sym:GDGOTREL16". */ 107 RELOC_NUMBER (R_CRIS_16_GOT_GD, 21) 108 109 /* Similar to R_CRIS_32_GOT_GD, but the value is the absolute 110 address of the GOT entry. Disallowed in DSOs created with 111 -shared. Assembly syntax: "sym:GD". */ 112 RELOC_NUMBER (R_CRIS_32_GD, 22) 113 114 /* A linker-generated-only relocation, instructing the dynamic 115 linker to fill in the module ID and module-relative-TLS-block 116 offset of the symbol in question, used for GOT entries. Note 117 that this relocation instructs to fill in two 32-bit values. */ 118 RELOC_NUMBER (R_CRIS_DTP, 23) 119 120 /* An assembler-generated-only relocation, instructing the linker to 121 reserve the first two GOT slots, and attach the R_CRIS_DTPMOD 122 relocation(*) for the module to the first slot, the second 123 containing zero. The value is 32 bits, the offset from the start 124 of the TLS block of the module to the thread-local symbol 125 mentioned in the relocation. This relocation must only be applied 126 to module-local symbols. Assembly syntax: "expr:DTPREL". */ 127 RELOC_NUMBER (R_CRIS_32_DTPREL, 24) 128 129 /* Similar to R_CRIS_32_DTPREL, but the value is a 16-bit signed 130 number, limiting the size of thread-variables of the DSO to 32768 131 bytes. (Note: matches both model 1 and 2 and allows use of addo.w 132 as the instruction where this relocation is used.) Assembly 133 syntax: "expr:DTPREL16". */ 134 RELOC_NUMBER (R_CRIS_16_DTPREL, 25) 135 136 /* An assembler-generated-only relocation, instructing the linker to 137 reserve a GOT slot and attach the R_CRIS_32_TPREL relocation for 138 the symbol in question. The value is 32 bits, which is the 139 GOT-relative offset of the slot. Assembly syntax: 140 "sym:TPOFFGOT". */ 141 RELOC_NUMBER (R_CRIS_32_GOT_TPREL, 26) 142 143 /* Similar to R_CRIS_32_TPREL, but the value is a 16-bit positive 144 number, limiting the number of thread- and global variables of 145 the DSO to 32768/4. Assembly syntax: "sym:TPOFFGOT16". */ 146 RELOC_NUMBER (R_CRIS_16_GOT_TPREL, 27) 147 148 /* An assembler- and linker-generated relocation, instructing to 149 resolve the symbol in question yielding the TLS offset of the 150 thread variable, relative to the global TLS block. Not allowed 151 as input when generating a DSO. Assembly syntax: 152 "expr:TPOFF". */ 153 RELOC_NUMBER (R_CRIS_32_TPREL, 28) 154 155 /* Similar to R_CRIS_32_TPREL, but only applicable to executables 156 compiled with -msmall-tls. Not allowed in a DSO. The value is a 157 16-bit signed number, limiting the size of thread-variables of 158 the executable to 32768 bytes. (Note: being signed makes it match 159 both model 1 and 2 and allows use of addo.w as the instruction 160 where this relocation is applied.) Assembly syntax: 161 "expr:TPOFF16". */ 162 RELOC_NUMBER (R_CRIS_16_TPREL, 29) 163 164 /* A linker-generated-only relocation, instructing the dynamic 165 linker to fill in the current module ID, used for GOT entries 166 (usually the fourth one). */ 167 RELOC_NUMBER (R_CRIS_DTPMOD, 30) 168 169 /* Similar to R_CRIS_32_GOT_TPREL, but the value is the absolute 170 address of the GOT entry. Disallowed in DSOs created with 171 -shared. Assembly syntax: "sym:IE". */ 172 RELOC_NUMBER (R_CRIS_32_IE, 31) 173 174 /* No other relocs must be visible outside the assembler. */ 175 176 END_RELOC_NUMBERS (R_CRIS_max) 177 178 /* User symbols in this file have a leading underscore. */ 179 #define EF_CRIS_UNDERSCORE 0x00000001 180 181 /* This is a mask for different incompatible machine variants. */ 182 #define EF_CRIS_VARIANT_MASK 0x0000000e 183 184 /* Variant 0; may contain v0..10 object. */ 185 #define EF_CRIS_VARIANT_ANY_V0_V10 0x00000000 186 187 /* Variant 1; contains v32 object. */ 188 #define EF_CRIS_VARIANT_V32 0x00000002 189 190 /* Variant 2; contains object compatible with v32 and v10. */ 191 #define EF_CRIS_VARIANT_COMMON_V10_V32 0x00000004 192 193 #endif /* _ELF_CRIS_H */ 194
