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/HexagonMCTargetDesc.h" 11 #include "llvm/MC/MCAssembler.h" 12 #include "llvm/MC/MCELFObjectWriter.h" 13 #include "llvm/MC/MCObjectWriter.h" 14 #include "llvm/MC/MCValue.h" 15 16 #define DEBUG_TYPE "hexagon-elf-writer" 17 18 using namespace llvm; 19 using namespace Hexagon; 20 21 namespace { 22 23 class HexagonELFObjectWriter : public MCELFObjectTargetWriter { 24 private: 25 StringRef CPU; 26 27 public: 28 HexagonELFObjectWriter(uint8_t OSABI, StringRef C); 29 30 unsigned getRelocType(MCContext &Ctx, MCValue const &Target, 31 MCFixup const &Fixup, bool IsPCRel) const override; 32 }; 33 } 34 35 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C) 36 : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON, 37 /*HasRelocationAddend*/ true), 38 CPU(C) {} 39 40 unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx, 41 MCValue const &Target, 42 MCFixup const &Fixup, 43 bool IsPCRel) const { 44 MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant(); 45 switch (Fixup.getTargetKind()) { 46 default: 47 report_fatal_error("Unrecognized relocation type"); 48 break; 49 case FK_Data_4: 50 switch(Variant) { 51 case MCSymbolRefExpr::VariantKind::VK_DTPREL: 52 return ELF::R_HEX_DTPREL_32; 53 case MCSymbolRefExpr::VariantKind::VK_GOT: 54 return ELF::R_HEX_GOT_32; 55 case MCSymbolRefExpr::VariantKind::VK_GOTREL: 56 return ELF::R_HEX_GOTREL_32; 57 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT: 58 return ELF::R_HEX_GD_GOT_32; 59 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE: 60 return ELF::R_HEX_IE_32; 61 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT: 62 return ELF::R_HEX_IE_GOT_32; 63 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT: 64 return ELF::R_HEX_LD_GOT_32; 65 case MCSymbolRefExpr::VariantKind::VK_PCREL: 66 return ELF::R_HEX_32_PCREL; 67 case MCSymbolRefExpr::VariantKind::VK_TPREL: 68 return ELF::R_HEX_TPREL_32; 69 case MCSymbolRefExpr::VariantKind::VK_None: 70 return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32; 71 default: 72 report_fatal_error("Unrecognized variant type"); 73 }; 74 case FK_PCRel_4: 75 return ELF::R_HEX_32_PCREL; 76 case FK_Data_2: 77 switch(Variant) { 78 case MCSymbolRefExpr::VariantKind::VK_DTPREL: 79 return ELF::R_HEX_DTPREL_16; 80 case MCSymbolRefExpr::VariantKind::VK_GOT: 81 return ELF::R_HEX_GOT_16; 82 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT: 83 return ELF::R_HEX_GD_GOT_16; 84 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT: 85 return ELF::R_HEX_IE_GOT_16; 86 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT: 87 return ELF::R_HEX_LD_GOT_16; 88 case MCSymbolRefExpr::VariantKind::VK_TPREL: 89 return ELF::R_HEX_TPREL_16; 90 case MCSymbolRefExpr::VariantKind::VK_None: 91 return ELF::R_HEX_16; 92 default: 93 report_fatal_error("Unrecognized variant type"); 94 }; 95 case FK_Data_1: 96 return ELF::R_HEX_8; 97 case fixup_Hexagon_B22_PCREL: 98 return ELF::R_HEX_B22_PCREL; 99 case fixup_Hexagon_B15_PCREL: 100 return ELF::R_HEX_B15_PCREL; 101 case fixup_Hexagon_B7_PCREL: 102 return ELF::R_HEX_B7_PCREL; 103 case fixup_Hexagon_LO16: 104 return ELF::R_HEX_LO16; 105 case fixup_Hexagon_HI16: 106 return ELF::R_HEX_HI16; 107 case fixup_Hexagon_32: 108 return ELF::R_HEX_32; 109 case fixup_Hexagon_16: 110 return ELF::R_HEX_16; 111 case fixup_Hexagon_8: 112 return ELF::R_HEX_8; 113 case fixup_Hexagon_GPREL16_0: 114 return ELF::R_HEX_GPREL16_0; 115 case fixup_Hexagon_GPREL16_1: 116 return ELF::R_HEX_GPREL16_1; 117 case fixup_Hexagon_GPREL16_2: 118 return ELF::R_HEX_GPREL16_2; 119 case fixup_Hexagon_GPREL16_3: 120 return ELF::R_HEX_GPREL16_3; 121 case fixup_Hexagon_HL16: 122 return ELF::R_HEX_HL16; 123 case fixup_Hexagon_B13_PCREL: 124 return ELF::R_HEX_B13_PCREL; 125 case fixup_Hexagon_B9_PCREL: 126 return ELF::R_HEX_B9_PCREL; 127 case fixup_Hexagon_B32_PCREL_X: 128 return ELF::R_HEX_B32_PCREL_X; 129 case fixup_Hexagon_32_6_X: 130 return ELF::R_HEX_32_6_X; 131 case fixup_Hexagon_B22_PCREL_X: 132 return ELF::R_HEX_B22_PCREL_X; 133 case fixup_Hexagon_B15_PCREL_X: 134 return ELF::R_HEX_B15_PCREL_X; 135 case fixup_Hexagon_B13_PCREL_X: 136 return ELF::R_HEX_B13_PCREL_X; 137 case fixup_Hexagon_B9_PCREL_X: 138 return ELF::R_HEX_B9_PCREL_X; 139 case fixup_Hexagon_B7_PCREL_X: 140 return ELF::R_HEX_B7_PCREL_X; 141 case fixup_Hexagon_16_X: 142 return ELF::R_HEX_16_X; 143 case fixup_Hexagon_12_X: 144 return ELF::R_HEX_12_X; 145 case fixup_Hexagon_11_X: 146 return ELF::R_HEX_11_X; 147 case fixup_Hexagon_10_X: 148 return ELF::R_HEX_10_X; 149 case fixup_Hexagon_9_X: 150 return ELF::R_HEX_9_X; 151 case fixup_Hexagon_8_X: 152 return ELF::R_HEX_8_X; 153 case fixup_Hexagon_7_X: 154 return ELF::R_HEX_7_X; 155 case fixup_Hexagon_6_X: 156 return ELF::R_HEX_6_X; 157 case fixup_Hexagon_32_PCREL: 158 return ELF::R_HEX_32_PCREL; 159 case fixup_Hexagon_COPY: 160 return ELF::R_HEX_COPY; 161 case fixup_Hexagon_GLOB_DAT: 162 return ELF::R_HEX_GLOB_DAT; 163 case fixup_Hexagon_JMP_SLOT: 164 return ELF::R_HEX_JMP_SLOT; 165 case fixup_Hexagon_RELATIVE: 166 return ELF::R_HEX_RELATIVE; 167 case fixup_Hexagon_PLT_B22_PCREL: 168 return ELF::R_HEX_PLT_B22_PCREL; 169 case fixup_Hexagon_GOTREL_LO16: 170 return ELF::R_HEX_GOTREL_LO16; 171 case fixup_Hexagon_GOTREL_HI16: 172 return ELF::R_HEX_GOTREL_HI16; 173 case fixup_Hexagon_GOTREL_32: 174 return ELF::R_HEX_GOTREL_32; 175 case fixup_Hexagon_GOT_LO16: 176 return ELF::R_HEX_GOT_LO16; 177 case fixup_Hexagon_GOT_HI16: 178 return ELF::R_HEX_GOT_HI16; 179 case fixup_Hexagon_GOT_32: 180 return ELF::R_HEX_GOT_32; 181 case fixup_Hexagon_GOT_16: 182 return ELF::R_HEX_GOT_16; 183 case fixup_Hexagon_DTPMOD_32: 184 return ELF::R_HEX_DTPMOD_32; 185 case fixup_Hexagon_DTPREL_LO16: 186 return ELF::R_HEX_DTPREL_LO16; 187 case fixup_Hexagon_DTPREL_HI16: 188 return ELF::R_HEX_DTPREL_HI16; 189 case fixup_Hexagon_DTPREL_32: 190 return ELF::R_HEX_DTPREL_32; 191 case fixup_Hexagon_DTPREL_16: 192 return ELF::R_HEX_DTPREL_16; 193 case fixup_Hexagon_GD_PLT_B22_PCREL: 194 return ELF::R_HEX_GD_PLT_B22_PCREL; 195 case fixup_Hexagon_LD_PLT_B22_PCREL: 196 return ELF::R_HEX_LD_PLT_B22_PCREL; 197 case fixup_Hexagon_GD_GOT_LO16: 198 return ELF::R_HEX_GD_GOT_LO16; 199 case fixup_Hexagon_GD_GOT_HI16: 200 return ELF::R_HEX_GD_GOT_HI16; 201 case fixup_Hexagon_GD_GOT_32: 202 return ELF::R_HEX_GD_GOT_32; 203 case fixup_Hexagon_GD_GOT_16: 204 return ELF::R_HEX_GD_GOT_16; 205 case fixup_Hexagon_LD_GOT_LO16: 206 return ELF::R_HEX_LD_GOT_LO16; 207 case fixup_Hexagon_LD_GOT_HI16: 208 return ELF::R_HEX_LD_GOT_HI16; 209 case fixup_Hexagon_LD_GOT_32: 210 return ELF::R_HEX_LD_GOT_32; 211 case fixup_Hexagon_LD_GOT_16: 212 return ELF::R_HEX_LD_GOT_16; 213 case fixup_Hexagon_IE_LO16: 214 return ELF::R_HEX_IE_LO16; 215 case fixup_Hexagon_IE_HI16: 216 return ELF::R_HEX_IE_HI16; 217 case fixup_Hexagon_IE_32: 218 return ELF::R_HEX_IE_32; 219 case fixup_Hexagon_IE_GOT_LO16: 220 return ELF::R_HEX_IE_GOT_LO16; 221 case fixup_Hexagon_IE_GOT_HI16: 222 return ELF::R_HEX_IE_GOT_HI16; 223 case fixup_Hexagon_IE_GOT_32: 224 return ELF::R_HEX_IE_GOT_32; 225 case fixup_Hexagon_IE_GOT_16: 226 return ELF::R_HEX_IE_GOT_16; 227 case fixup_Hexagon_TPREL_LO16: 228 return ELF::R_HEX_TPREL_LO16; 229 case fixup_Hexagon_TPREL_HI16: 230 return ELF::R_HEX_TPREL_HI16; 231 case fixup_Hexagon_TPREL_32: 232 return ELF::R_HEX_TPREL_32; 233 case fixup_Hexagon_TPREL_16: 234 return ELF::R_HEX_TPREL_16; 235 case fixup_Hexagon_6_PCREL_X: 236 return ELF::R_HEX_6_PCREL_X; 237 case fixup_Hexagon_GOTREL_32_6_X: 238 return ELF::R_HEX_GOTREL_32_6_X; 239 case fixup_Hexagon_GOTREL_16_X: 240 return ELF::R_HEX_GOTREL_16_X; 241 case fixup_Hexagon_GOTREL_11_X: 242 return ELF::R_HEX_GOTREL_11_X; 243 case fixup_Hexagon_GOT_32_6_X: 244 return ELF::R_HEX_GOT_32_6_X; 245 case fixup_Hexagon_GOT_16_X: 246 return ELF::R_HEX_GOT_16_X; 247 case fixup_Hexagon_GOT_11_X: 248 return ELF::R_HEX_GOT_11_X; 249 case fixup_Hexagon_DTPREL_32_6_X: 250 return ELF::R_HEX_DTPREL_32_6_X; 251 case fixup_Hexagon_DTPREL_16_X: 252 return ELF::R_HEX_DTPREL_16_X; 253 case fixup_Hexagon_DTPREL_11_X: 254 return ELF::R_HEX_DTPREL_11_X; 255 case fixup_Hexagon_GD_GOT_32_6_X: 256 return ELF::R_HEX_GD_GOT_32_6_X; 257 case fixup_Hexagon_GD_GOT_16_X: 258 return ELF::R_HEX_GD_GOT_16_X; 259 case fixup_Hexagon_GD_GOT_11_X: 260 return ELF::R_HEX_GD_GOT_11_X; 261 case fixup_Hexagon_LD_GOT_32_6_X: 262 return ELF::R_HEX_LD_GOT_32_6_X; 263 case fixup_Hexagon_LD_GOT_16_X: 264 return ELF::R_HEX_LD_GOT_16_X; 265 case fixup_Hexagon_LD_GOT_11_X: 266 return ELF::R_HEX_LD_GOT_11_X; 267 case fixup_Hexagon_IE_32_6_X: 268 return ELF::R_HEX_IE_32_6_X; 269 case fixup_Hexagon_IE_16_X: 270 return ELF::R_HEX_IE_16_X; 271 case fixup_Hexagon_IE_GOT_32_6_X: 272 return ELF::R_HEX_IE_GOT_32_6_X; 273 case fixup_Hexagon_IE_GOT_16_X: 274 return ELF::R_HEX_IE_GOT_16_X; 275 case fixup_Hexagon_IE_GOT_11_X: 276 return ELF::R_HEX_IE_GOT_11_X; 277 case fixup_Hexagon_TPREL_32_6_X: 278 return ELF::R_HEX_TPREL_32_6_X; 279 case fixup_Hexagon_TPREL_16_X: 280 return ELF::R_HEX_TPREL_16_X; 281 case fixup_Hexagon_TPREL_11_X: 282 return ELF::R_HEX_TPREL_11_X; 283 case fixup_Hexagon_23_REG: 284 return ELF::R_HEX_23_REG; 285 case fixup_Hexagon_27_REG: 286 return ELF::R_HEX_27_REG; 287 case fixup_Hexagon_GD_PLT_B22_PCREL_X: 288 return ELF::R_HEX_GD_PLT_B22_PCREL_X; 289 case fixup_Hexagon_GD_PLT_B32_PCREL_X: 290 return ELF::R_HEX_GD_PLT_B32_PCREL_X; 291 case fixup_Hexagon_LD_PLT_B22_PCREL_X: 292 return ELF::R_HEX_LD_PLT_B22_PCREL_X; 293 case fixup_Hexagon_LD_PLT_B32_PCREL_X: 294 return ELF::R_HEX_LD_PLT_B32_PCREL_X; 295 } 296 } 297 298 std::unique_ptr<MCObjectTargetWriter> 299 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) { 300 return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU); 301 } 302