1 //===-- HexagonELFObjectWriter.cpp - Hexagon Target Descriptions ----------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "MCTargetDesc/HexagonFixupKinds.h" 10 #include "MCTargetDesc/HexagonMCExpr.h" 11 #include "MCTargetDesc/HexagonMCTargetDesc.h" 12 #include "llvm/MC/MCAssembler.h" 13 #include "llvm/MC/MCELFObjectWriter.h" 14 #include "llvm/MC/MCObjectWriter.h" 15 #include "llvm/MC/MCValue.h" 16 17 #define DEBUG_TYPE "hexagon-elf-writer" 18 19 using namespace llvm; 20 using namespace Hexagon; 21 22 namespace { 23 24 class HexagonELFObjectWriter : public MCELFObjectTargetWriter { 25 private: 26 StringRef CPU; 27 28 public: 29 HexagonELFObjectWriter(uint8_t OSABI, StringRef C); 30 31 unsigned getRelocType(const MCFixup &, const MCValue &, 32 bool IsPCRel) const override; 33 }; 34 } 35 36 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C) 37 : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON, 38 /*HasRelocationAddend*/ true), 39 CPU(C) {} 40 41 unsigned HexagonELFObjectWriter::getRelocType(const MCFixup &Fixup, 42 const MCValue &Target, 43 bool IsPCRel) const { 44 auto Variant = HexagonMCExpr::VariantKind(Target.getSpecifier()); 45 switch (Variant) { 46 case HexagonMCExpr::VK_GD_GOT: 47 case HexagonMCExpr::VK_LD_GOT: 48 case HexagonMCExpr::VK_GD_PLT: 49 case HexagonMCExpr::VK_LD_PLT: 50 case HexagonMCExpr::VK_IE: 51 case HexagonMCExpr::VK_IE_GOT: 52 case HexagonMCExpr::VK_TPREL: 53 if (auto *SA = Target.getAddSym()) 54 cast<MCSymbolELF>(SA)->setType(ELF::STT_TLS); 55 break; 56 default: 57 break; 58 } 59 switch (Fixup.getKind()) { 60 default: 61 report_fatal_error("Unrecognized relocation type"); 62 break; 63 case FK_Data_4: 64 switch (Variant) { 65 case HexagonMCExpr::VK_DTPREL: 66 return ELF::R_HEX_DTPREL_32; 67 case HexagonMCExpr::VK_GOT: 68 return ELF::R_HEX_GOT_32; 69 case HexagonMCExpr::VK_GOTREL: 70 return ELF::R_HEX_GOTREL_32; 71 case HexagonMCExpr::VK_GD_GOT: 72 return ELF::R_HEX_GD_GOT_32; 73 case HexagonMCExpr::VK_IE: 74 return ELF::R_HEX_IE_32; 75 case HexagonMCExpr::VK_IE_GOT: 76 return ELF::R_HEX_IE_GOT_32; 77 case HexagonMCExpr::VK_LD_GOT: 78 return ELF::R_HEX_LD_GOT_32; 79 case HexagonMCExpr::VK_PCREL: 80 return ELF::R_HEX_32_PCREL; 81 case HexagonMCExpr::VK_TPREL: 82 return ELF::R_HEX_TPREL_32; 83 case HexagonMCExpr::VK_None: 84 return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32; 85 default: 86 report_fatal_error("Unrecognized variant type"); 87 }; 88 case FK_Data_2: 89 switch(Variant) { 90 case HexagonMCExpr::VK_DTPREL: 91 return ELF::R_HEX_DTPREL_16; 92 case HexagonMCExpr::VK_GOT: 93 return ELF::R_HEX_GOT_16; 94 case HexagonMCExpr::VK_GD_GOT: 95 return ELF::R_HEX_GD_GOT_16; 96 case HexagonMCExpr::VK_IE_GOT: 97 return ELF::R_HEX_IE_GOT_16; 98 case HexagonMCExpr::VK_LD_GOT: 99 return ELF::R_HEX_LD_GOT_16; 100 case HexagonMCExpr::VK_TPREL: 101 return ELF::R_HEX_TPREL_16; 102 case HexagonMCExpr::VK_None: 103 return ELF::R_HEX_16; 104 default: 105 report_fatal_error("Unrecognized variant type"); 106 }; 107 case FK_Data_1: 108 return ELF::R_HEX_8; 109 case fixup_Hexagon_B22_PCREL: 110 return ELF::R_HEX_B22_PCREL; 111 case fixup_Hexagon_B15_PCREL: 112 return ELF::R_HEX_B15_PCREL; 113 case fixup_Hexagon_B7_PCREL: 114 return ELF::R_HEX_B7_PCREL; 115 case fixup_Hexagon_LO16: 116 return ELF::R_HEX_LO16; 117 case fixup_Hexagon_HI16: 118 return ELF::R_HEX_HI16; 119 case fixup_Hexagon_32: 120 return ELF::R_HEX_32; 121 case fixup_Hexagon_16: 122 return ELF::R_HEX_16; 123 case fixup_Hexagon_8: 124 return ELF::R_HEX_8; 125 case fixup_Hexagon_GPREL16_0: 126 return ELF::R_HEX_GPREL16_0; 127 case fixup_Hexagon_GPREL16_1: 128 return ELF::R_HEX_GPREL16_1; 129 case fixup_Hexagon_GPREL16_2: 130 return ELF::R_HEX_GPREL16_2; 131 case fixup_Hexagon_GPREL16_3: 132 return ELF::R_HEX_GPREL16_3; 133 case fixup_Hexagon_HL16: 134 return ELF::R_HEX_HL16; 135 case fixup_Hexagon_B13_PCREL: 136 return ELF::R_HEX_B13_PCREL; 137 case fixup_Hexagon_B9_PCREL: 138 return ELF::R_HEX_B9_PCREL; 139 case fixup_Hexagon_B32_PCREL_X: 140 return ELF::R_HEX_B32_PCREL_X; 141 case fixup_Hexagon_32_6_X: 142 return ELF::R_HEX_32_6_X; 143 case fixup_Hexagon_B22_PCREL_X: 144 return ELF::R_HEX_B22_PCREL_X; 145 case fixup_Hexagon_B15_PCREL_X: 146 return ELF::R_HEX_B15_PCREL_X; 147 case fixup_Hexagon_B13_PCREL_X: 148 return ELF::R_HEX_B13_PCREL_X; 149 case fixup_Hexagon_B9_PCREL_X: 150 return ELF::R_HEX_B9_PCREL_X; 151 case fixup_Hexagon_B7_PCREL_X: 152 return ELF::R_HEX_B7_PCREL_X; 153 case fixup_Hexagon_16_X: 154 return ELF::R_HEX_16_X; 155 case fixup_Hexagon_12_X: 156 return ELF::R_HEX_12_X; 157 case fixup_Hexagon_11_X: 158 return ELF::R_HEX_11_X; 159 case fixup_Hexagon_10_X: 160 return ELF::R_HEX_10_X; 161 case fixup_Hexagon_9_X: 162 return ELF::R_HEX_9_X; 163 case fixup_Hexagon_8_X: 164 return ELF::R_HEX_8_X; 165 case fixup_Hexagon_7_X: 166 return ELF::R_HEX_7_X; 167 case fixup_Hexagon_6_X: 168 return ELF::R_HEX_6_X; 169 case fixup_Hexagon_32_PCREL: 170 return ELF::R_HEX_32_PCREL; 171 case fixup_Hexagon_COPY: 172 return ELF::R_HEX_COPY; 173 case fixup_Hexagon_GLOB_DAT: 174 return ELF::R_HEX_GLOB_DAT; 175 case fixup_Hexagon_JMP_SLOT: 176 return ELF::R_HEX_JMP_SLOT; 177 case fixup_Hexagon_RELATIVE: 178 return ELF::R_HEX_RELATIVE; 179 case fixup_Hexagon_PLT_B22_PCREL: 180 return ELF::R_HEX_PLT_B22_PCREL; 181 case fixup_Hexagon_GOTREL_LO16: 182 return ELF::R_HEX_GOTREL_LO16; 183 case fixup_Hexagon_GOTREL_HI16: 184 return ELF::R_HEX_GOTREL_HI16; 185 case fixup_Hexagon_GOTREL_32: 186 return ELF::R_HEX_GOTREL_32; 187 case fixup_Hexagon_GOT_LO16: 188 return ELF::R_HEX_GOT_LO16; 189 case fixup_Hexagon_GOT_HI16: 190 return ELF::R_HEX_GOT_HI16; 191 case fixup_Hexagon_GOT_32: 192 return ELF::R_HEX_GOT_32; 193 case fixup_Hexagon_GOT_16: 194 return ELF::R_HEX_GOT_16; 195 case fixup_Hexagon_DTPMOD_32: 196 return ELF::R_HEX_DTPMOD_32; 197 case fixup_Hexagon_DTPREL_LO16: 198 return ELF::R_HEX_DTPREL_LO16; 199 case fixup_Hexagon_DTPREL_HI16: 200 return ELF::R_HEX_DTPREL_HI16; 201 case fixup_Hexagon_DTPREL_32: 202 return ELF::R_HEX_DTPREL_32; 203 case fixup_Hexagon_DTPREL_16: 204 return ELF::R_HEX_DTPREL_16; 205 case fixup_Hexagon_GD_PLT_B22_PCREL: 206 return ELF::R_HEX_GD_PLT_B22_PCREL; 207 case fixup_Hexagon_LD_PLT_B22_PCREL: 208 return ELF::R_HEX_LD_PLT_B22_PCREL; 209 case fixup_Hexagon_GD_GOT_LO16: 210 return ELF::R_HEX_GD_GOT_LO16; 211 case fixup_Hexagon_GD_GOT_HI16: 212 return ELF::R_HEX_GD_GOT_HI16; 213 case fixup_Hexagon_GD_GOT_32: 214 return ELF::R_HEX_GD_GOT_32; 215 case fixup_Hexagon_GD_GOT_16: 216 return ELF::R_HEX_GD_GOT_16; 217 case fixup_Hexagon_LD_GOT_LO16: 218 return ELF::R_HEX_LD_GOT_LO16; 219 case fixup_Hexagon_LD_GOT_HI16: 220 return ELF::R_HEX_LD_GOT_HI16; 221 case fixup_Hexagon_LD_GOT_32: 222 return ELF::R_HEX_LD_GOT_32; 223 case fixup_Hexagon_LD_GOT_16: 224 return ELF::R_HEX_LD_GOT_16; 225 case fixup_Hexagon_IE_LO16: 226 return ELF::R_HEX_IE_LO16; 227 case fixup_Hexagon_IE_HI16: 228 return ELF::R_HEX_IE_HI16; 229 case fixup_Hexagon_IE_32: 230 return ELF::R_HEX_IE_32; 231 case fixup_Hexagon_IE_GOT_LO16: 232 return ELF::R_HEX_IE_GOT_LO16; 233 case fixup_Hexagon_IE_GOT_HI16: 234 return ELF::R_HEX_IE_GOT_HI16; 235 case fixup_Hexagon_IE_GOT_32: 236 return ELF::R_HEX_IE_GOT_32; 237 case fixup_Hexagon_IE_GOT_16: 238 return ELF::R_HEX_IE_GOT_16; 239 case fixup_Hexagon_TPREL_LO16: 240 return ELF::R_HEX_TPREL_LO16; 241 case fixup_Hexagon_TPREL_HI16: 242 return ELF::R_HEX_TPREL_HI16; 243 case fixup_Hexagon_TPREL_32: 244 return ELF::R_HEX_TPREL_32; 245 case fixup_Hexagon_TPREL_16: 246 return ELF::R_HEX_TPREL_16; 247 case fixup_Hexagon_6_PCREL_X: 248 return ELF::R_HEX_6_PCREL_X; 249 case fixup_Hexagon_GOTREL_32_6_X: 250 return ELF::R_HEX_GOTREL_32_6_X; 251 case fixup_Hexagon_GOTREL_16_X: 252 return ELF::R_HEX_GOTREL_16_X; 253 case fixup_Hexagon_GOTREL_11_X: 254 return ELF::R_HEX_GOTREL_11_X; 255 case fixup_Hexagon_GOT_32_6_X: 256 return ELF::R_HEX_GOT_32_6_X; 257 case fixup_Hexagon_GOT_16_X: 258 return ELF::R_HEX_GOT_16_X; 259 case fixup_Hexagon_GOT_11_X: 260 return ELF::R_HEX_GOT_11_X; 261 case fixup_Hexagon_DTPREL_32_6_X: 262 return ELF::R_HEX_DTPREL_32_6_X; 263 case fixup_Hexagon_DTPREL_16_X: 264 return ELF::R_HEX_DTPREL_16_X; 265 case fixup_Hexagon_DTPREL_11_X: 266 return ELF::R_HEX_DTPREL_11_X; 267 case fixup_Hexagon_GD_GOT_32_6_X: 268 return ELF::R_HEX_GD_GOT_32_6_X; 269 case fixup_Hexagon_GD_GOT_16_X: 270 return ELF::R_HEX_GD_GOT_16_X; 271 case fixup_Hexagon_GD_GOT_11_X: 272 return ELF::R_HEX_GD_GOT_11_X; 273 case fixup_Hexagon_LD_GOT_32_6_X: 274 return ELF::R_HEX_LD_GOT_32_6_X; 275 case fixup_Hexagon_LD_GOT_16_X: 276 return ELF::R_HEX_LD_GOT_16_X; 277 case fixup_Hexagon_LD_GOT_11_X: 278 return ELF::R_HEX_LD_GOT_11_X; 279 case fixup_Hexagon_IE_32_6_X: 280 return ELF::R_HEX_IE_32_6_X; 281 case fixup_Hexagon_IE_16_X: 282 return ELF::R_HEX_IE_16_X; 283 case fixup_Hexagon_IE_GOT_32_6_X: 284 return ELF::R_HEX_IE_GOT_32_6_X; 285 case fixup_Hexagon_IE_GOT_16_X: 286 return ELF::R_HEX_IE_GOT_16_X; 287 case fixup_Hexagon_IE_GOT_11_X: 288 return ELF::R_HEX_IE_GOT_11_X; 289 case fixup_Hexagon_TPREL_32_6_X: 290 return ELF::R_HEX_TPREL_32_6_X; 291 case fixup_Hexagon_TPREL_16_X: 292 return ELF::R_HEX_TPREL_16_X; 293 case fixup_Hexagon_TPREL_11_X: 294 return ELF::R_HEX_TPREL_11_X; 295 case fixup_Hexagon_23_REG: 296 return ELF::R_HEX_23_REG; 297 case fixup_Hexagon_27_REG: 298 return ELF::R_HEX_27_REG; 299 case fixup_Hexagon_GD_PLT_B22_PCREL_X: 300 return ELF::R_HEX_GD_PLT_B22_PCREL_X; 301 case fixup_Hexagon_GD_PLT_B32_PCREL_X: 302 return ELF::R_HEX_GD_PLT_B32_PCREL_X; 303 case fixup_Hexagon_LD_PLT_B22_PCREL_X: 304 return ELF::R_HEX_LD_PLT_B22_PCREL_X; 305 case fixup_Hexagon_LD_PLT_B32_PCREL_X: 306 return ELF::R_HEX_LD_PLT_B32_PCREL_X; 307 } 308 } 309 310 std::unique_ptr<MCObjectTargetWriter> 311 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) { 312 return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU); 313 } 314