| 1 | /* CRIS ELF support for BFD. |
| 2 | Copyright 2000, 2001, 2004, 2010 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 */ |