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5191 | serge | 1 | /* CRIS ELF support for BFD. |
2 | Copyright 2000, 2001, 2004, 2010 Free Software Foundation, Inc. |
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3 | Contributed by Axis Communications AB, Lund, Sweden. |
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4 | Written by Hans-Peter Nilsson. |
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5 | |||
6 | This file is part of BFD, the Binary File Descriptor library. |
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7 | |||
8 | This program is free software; you can redistribute it and/or modify |
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9 | it under the terms of the GNU General Public License as published by |
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10 | the Free Software Foundation; either version 3 of the License, or |
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11 | (at your option) any later version. |
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12 | |||
13 | This program is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | GNU General Public License for more details. |
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17 | |||
18 | You should have received a copy of the GNU General Public License |
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19 | along with this program; if not, write to the Free Software Foundation, |
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20 | Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
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21 | |||
22 | #ifndef _ELF_CRIS_H |
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23 | #define _ELF_CRIS_H |
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24 | |||
25 | #include "elf/reloc-macros.h" |
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26 | |||
27 | /* Relocations. */ |
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28 | START_RELOC_NUMBERS (elf_cris_reloc_type) |
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29 | RELOC_NUMBER (R_CRIS_NONE, 0) |
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30 | RELOC_NUMBER (R_CRIS_8, 1) |
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31 | RELOC_NUMBER (R_CRIS_16, 2) |
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32 | RELOC_NUMBER (R_CRIS_32, 3) |
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33 | |||
34 | /* The "PC" position is the location right after the relocation. */ |
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35 | RELOC_NUMBER (R_CRIS_8_PCREL, 4) |
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36 | RELOC_NUMBER (R_CRIS_16_PCREL, 5) |
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37 | RELOC_NUMBER (R_CRIS_32_PCREL, 6) |
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38 | |||
39 | RELOC_NUMBER (R_CRIS_GNU_VTINHERIT, 7) |
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40 | RELOC_NUMBER (R_CRIS_GNU_VTENTRY, 8) |
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41 | |||
42 | /* Copy contents at dynlinking. Generated by the linker. |
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43 | The BFD equivalent is BFD_RELOC_CRIS_COPY. */ |
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44 | RELOC_NUMBER (R_CRIS_COPY, 9) |
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45 | |||
46 | /* Create GOT entry. Generated by the linker. |
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47 | The BFD equivalent is BFD_RELOC_CRIS_GLOB_DAT. */ |
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48 | RELOC_NUMBER (R_CRIS_GLOB_DAT, 10) |
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49 | |||
50 | /* Create PLT entry. Generated by the linker. |
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51 | The BFD equivalent is BFD_RELOC_CRIS_JUMP_SLOT. */ |
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52 | RELOC_NUMBER (R_CRIS_JUMP_SLOT, 11) |
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53 | |||
54 | /* Adjust by program base. Generated by the linker. |
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55 | The BFD equivalent is BFD_RELOC_CRIS_RELATIVE. */ |
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56 | RELOC_NUMBER (R_CRIS_RELATIVE, 12) |
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57 | |||
58 | /* A 16-bit offset to entry in GOT and request to create GOT entry for |
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59 | that symbol. |
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60 | The BFD equivalent is BFD_RELOC_CRIS_16_GOT. */ |
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61 | RELOC_NUMBER (R_CRIS_16_GOT, 13) |
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62 | |||
63 | /* A 32-bit offset to entry in GOT and request to create GOT entry for |
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64 | that symbol. |
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65 | The BFD equivalent is BFD_RELOC_CRIS_32_GOT. */ |
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66 | RELOC_NUMBER (R_CRIS_32_GOT, 14) |
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67 | |||
68 | /* A 16-bit offset to entry in PLT part of GOT and request to create PLT |
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69 | entry for that symbol. |
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70 | The BFD equivalent is BFD_RELOC_CRIS_16_GOTPLT. */ |
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71 | RELOC_NUMBER (R_CRIS_16_GOTPLT, 15) |
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72 | |||
73 | /* A 32-bit offset to entry in PLT part of GOT and request to create PLT |
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74 | entry for that symbol. |
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75 | The BFD equivalent is BFD_RELOC_CRIS_32_GOTPLT. */ |
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76 | RELOC_NUMBER (R_CRIS_32_GOTPLT, 16) |
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77 | |||
78 | /* A 32-bit offset from GOT to (local) symbol: no GOT entry should be |
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79 | necessary. |
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80 | The BFD equivalent is BFD_RELOC_CRIS_32_GOTREL. */ |
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81 | RELOC_NUMBER (R_CRIS_32_GOTREL, 17) |
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82 | |||
83 | /* A 32-bit offset from GOT to entry for this symbol in PLT and request |
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84 | to create PLT entry for symbol. |
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85 | The BFD equivalent is BFD_RELOC_CRIS_32_GOTREL. */ |
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86 | RELOC_NUMBER (R_CRIS_32_PLT_GOTREL, 18) |
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87 | |||
88 | /* A 32-bit offset from location after this relocation (addend specifies |
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89 | offset) to entry for this symbol in PLT and request to create PLT |
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90 | entry for symbol. |
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91 | The BFD equivalent is BFD_RELOC_CRIS_32_PLT_PCREL. */ |
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92 | RELOC_NUMBER (R_CRIS_32_PLT_PCREL, 19) |
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93 | |||
94 | /* An assembler-generated-only relocation, instructing the linker to |
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95 | reserve two GOT slots, carrying the R_CRIS_DTP relocation for the |
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96 | symbol (pointing to the first slot, the relocation fills in |
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97 | both). The value is a 32-bit-value, relative to the start of the |
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98 | GOT. Assembly syntax: "sym:GDGOTREL". */ |
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99 | RELOC_NUMBER (R_CRIS_32_GOT_GD, 20) |
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100 | |||
101 | /* Similar to R_CRIS_32_GOT_GD, but the value is a 16-bit unsigned |
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102 | number, limiting access to 65536/4 global symbols per module (or |
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103 | 65536/8 thread variables; loosely speaking G*4+T*8 < 65536, where |
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104 | T is the number of thread variables and G is the number of other |
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105 | external global variables and functions). Assembly syntax: |
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106 | "sym:GDGOTREL16". */ |
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107 | RELOC_NUMBER (R_CRIS_16_GOT_GD, 21) |
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108 | |||
109 | /* Similar to R_CRIS_32_GOT_GD, but the value is the absolute |
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110 | address of the GOT entry. Disallowed in DSOs created with |
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111 | -shared. Assembly syntax: "sym:GD". */ |
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112 | RELOC_NUMBER (R_CRIS_32_GD, 22) |
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113 | |||
114 | /* A linker-generated-only relocation, instructing the dynamic |
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115 | linker to fill in the module ID and module-relative-TLS-block |
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116 | offset of the symbol in question, used for GOT entries. Note |
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117 | that this relocation instructs to fill in two 32-bit values. */ |
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118 | RELOC_NUMBER (R_CRIS_DTP, 23) |
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119 | |||
120 | /* An assembler-generated-only relocation, instructing the linker to |
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121 | reserve the first two GOT slots, and attach the R_CRIS_DTPMOD |
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122 | relocation(*) for the module to the first slot, the second |
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123 | containing zero. The value is 32 bits, the offset from the start |
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124 | of the TLS block of the module to the thread-local symbol |
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125 | mentioned in the relocation. This relocation must only be applied |
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126 | to module-local symbols. Assembly syntax: "expr:DTPREL". */ |
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127 | RELOC_NUMBER (R_CRIS_32_DTPREL, 24) |
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128 | |||
129 | /* Similar to R_CRIS_32_DTPREL, but the value is a 16-bit signed |
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130 | number, limiting the size of thread-variables of the DSO to 32768 |
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131 | bytes. (Note: matches both model 1 and 2 and allows use of addo.w |
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132 | as the instruction where this relocation is used.) Assembly |
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133 | syntax: "expr:DTPREL16". */ |
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134 | RELOC_NUMBER (R_CRIS_16_DTPREL, 25) |
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135 | |||
136 | /* An assembler-generated-only relocation, instructing the linker to |
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137 | reserve a GOT slot and attach the R_CRIS_32_TPREL relocation for |
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138 | the symbol in question. The value is 32 bits, which is the |
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139 | GOT-relative offset of the slot. Assembly syntax: |
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140 | "sym:TPOFFGOT". */ |
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141 | RELOC_NUMBER (R_CRIS_32_GOT_TPREL, 26) |
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142 | |||
143 | /* Similar to R_CRIS_32_TPREL, but the value is a 16-bit positive |
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144 | number, limiting the number of thread- and global variables of |
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145 | the DSO to 32768/4. Assembly syntax: "sym:TPOFFGOT16". */ |
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146 | RELOC_NUMBER (R_CRIS_16_GOT_TPREL, 27) |
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147 | |||
148 | /* An assembler- and linker-generated relocation, instructing to |
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149 | resolve the symbol in question yielding the TLS offset of the |
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150 | thread variable, relative to the global TLS block. Not allowed |
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151 | as input when generating a DSO. Assembly syntax: |
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152 | "expr:TPOFF". */ |
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153 | RELOC_NUMBER (R_CRIS_32_TPREL, 28) |
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154 | |||
155 | /* Similar to R_CRIS_32_TPREL, but only applicable to executables |
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156 | compiled with -msmall-tls. Not allowed in a DSO. The value is a |
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157 | 16-bit signed number, limiting the size of thread-variables of |
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158 | the executable to 32768 bytes. (Note: being signed makes it match |
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159 | both model 1 and 2 and allows use of addo.w as the instruction |
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160 | where this relocation is applied.) Assembly syntax: |
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161 | "expr:TPOFF16". */ |
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162 | RELOC_NUMBER (R_CRIS_16_TPREL, 29) |
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163 | |||
164 | /* A linker-generated-only relocation, instructing the dynamic |
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165 | linker to fill in the current module ID, used for GOT entries |
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166 | (usually the fourth one). */ |
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167 | RELOC_NUMBER (R_CRIS_DTPMOD, 30) |
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168 | |||
169 | /* Similar to R_CRIS_32_GOT_TPREL, but the value is the absolute |
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170 | address of the GOT entry. Disallowed in DSOs created with |
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171 | -shared. Assembly syntax: "sym:IE". */ |
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172 | RELOC_NUMBER (R_CRIS_32_IE, 31) |
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173 | |||
174 | /* No other relocs must be visible outside the assembler. */ |
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175 | |||
176 | END_RELOC_NUMBERS (R_CRIS_max) |
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177 | |||
178 | /* User symbols in this file have a leading underscore. */ |
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179 | #define EF_CRIS_UNDERSCORE 0x00000001 |
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180 | |||
181 | /* This is a mask for different incompatible machine variants. */ |
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182 | #define EF_CRIS_VARIANT_MASK 0x0000000e |
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183 | |||
184 | /* Variant 0; may contain v0..10 object. */ |
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185 | #define EF_CRIS_VARIANT_ANY_V0_V10 0x00000000 |
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186 | |||
187 | /* Variant 1; contains v32 object. */ |
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188 | #define EF_CRIS_VARIANT_V32 0x00000002 |
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189 | |||
190 | /* Variant 2; contains object compatible with v32 and v10. */ |
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191 | #define EF_CRIS_VARIANT_COMMON_V10_V32 0x00000004 |
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192 | |||
193 | #endif /* _ELF_CRIS_H */> |