1 //===-- HexagonELFObjectWriter.cpp - Hexagon Target Descriptions ----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "Hexagon.h" 11 #include "MCTargetDesc/HexagonFixupKinds.h" 12 #include "llvm/MC/MCAssembler.h" 13 #include "llvm/MC/MCELFObjectWriter.h" 14 #include "llvm/MC/MCValue.h" 15 #include "llvm/Support/Debug.h" 16 #include "llvm/Support/raw_ostream.h" 17 18 #define DEBUG_TYPE "hexagon-elf-writer" 19 20 using namespace llvm; 21 using namespace Hexagon; 22 23 namespace { 24 25 class HexagonELFObjectWriter : public MCELFObjectTargetWriter { 26 private: 27 StringRef CPU; 28 29 public: 30 HexagonELFObjectWriter(uint8_t OSABI, StringRef C); 31 32 unsigned getRelocType(MCContext &Ctx, MCValue const &Target, 33 MCFixup const &Fixup, bool IsPCRel) const override; 34 }; 35 } 36 37 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C) 38 : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON, 39 /*HasRelocationAddend*/ true), 40 CPU(C) {} 41 42 unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx, 43 MCValue const &Target, 44 MCFixup const &Fixup, 45 bool IsPCRel) const { 46 MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant(); 47 switch ((unsigned)Fixup.getKind()) { 48 default: 49 report_fatal_error("Unrecognized relocation type"); 50 break; 51 case FK_Data_4: 52 switch(Variant) { 53 case MCSymbolRefExpr::VariantKind::VK_DTPREL: 54 return ELF::R_HEX_DTPREL_32; 55 case MCSymbolRefExpr::VariantKind::VK_GOT: 56 return ELF::R_HEX_GOT_32; 57 case MCSymbolRefExpr::VariantKind::VK_GOTREL: 58 return ELF::R_HEX_GOTREL_32; 59 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT: 60 return ELF::R_HEX_GD_GOT_32; 61 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE: 62 return ELF::R_HEX_IE_32; 63 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT: 64 return ELF::R_HEX_IE_GOT_32; 65 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT: 66 return ELF::R_HEX_LD_GOT_32; 67 case MCSymbolRefExpr::VariantKind::VK_Hexagon_PCREL: 68 return ELF::R_HEX_32_PCREL; 69 case MCSymbolRefExpr::VariantKind::VK_TPREL: 70 return ELF::R_HEX_TPREL_32; 71 case MCSymbolRefExpr::VariantKind::VK_None: 72 return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32; 73 default: 74 report_fatal_error("Unrecognized variant type"); 75 }; 76 case FK_PCRel_4: 77 return ELF::R_HEX_32_PCREL; 78 case FK_Data_2: 79 switch(Variant) { 80 case MCSymbolRefExpr::VariantKind::VK_DTPREL: 81 return ELF::R_HEX_DTPREL_16; 82 case MCSymbolRefExpr::VariantKind::VK_GOT: 83 return ELF::R_HEX_GOT_16; 84 case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT: 85 return ELF::R_HEX_GD_GOT_16; 86 case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT: 87 return ELF::R_HEX_IE_GOT_16; 88 case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT: 89 return ELF::R_HEX_LD_GOT_16; 90 case MCSymbolRefExpr::VariantKind::VK_TPREL: 91 return ELF::R_HEX_TPREL_16; 92 case MCSymbolRefExpr::VariantKind::VK_None: 93 return ELF::R_HEX_16; 94 default: 95 report_fatal_error("Unrecognized variant type"); 96 }; 97 case FK_Data_1: 98 return ELF::R_HEX_8; 99 case fixup_Hexagon_B22_PCREL: 100 return ELF::R_HEX_B22_PCREL; 101 case fixup_Hexagon_B15_PCREL: 102 return ELF::R_HEX_B15_PCREL; 103 case fixup_Hexagon_B7_PCREL: 104 return ELF::R_HEX_B7_PCREL; 105 case fixup_Hexagon_LO16: 106 return ELF::R_HEX_LO16; 107 case fixup_Hexagon_HI16: 108 return ELF::R_HEX_HI16; 109 case fixup_Hexagon_32: 110 return ELF::R_HEX_32; 111 case fixup_Hexagon_16: 112 return ELF::R_HEX_16; 113 case fixup_Hexagon_8: 114 return ELF::R_HEX_8; 115 case fixup_Hexagon_GPREL16_0: 116 return ELF::R_HEX_GPREL16_0; 117 case fixup_Hexagon_GPREL16_1: 118 return ELF::R_HEX_GPREL16_1; 119 case fixup_Hexagon_GPREL16_2: 120 return ELF::R_HEX_GPREL16_2; 121 case fixup_Hexagon_GPREL16_3: 122 return ELF::R_HEX_GPREL16_3; 123 case fixup_Hexagon_HL16: 124 return ELF::R_HEX_HL16; 125 case fixup_Hexagon_B13_PCREL: 126 return ELF::R_HEX_B13_PCREL; 127 case fixup_Hexagon_B9_PCREL: 128 return ELF::R_HEX_B9_PCREL; 129 case fixup_Hexagon_B32_PCREL_X: 130 return ELF::R_HEX_B32_PCREL_X; 131 case fixup_Hexagon_32_6_X: 132 return ELF::R_HEX_32_6_X; 133 case fixup_Hexagon_B22_PCREL_X: 134 return ELF::R_HEX_B22_PCREL_X; 135 case fixup_Hexagon_B15_PCREL_X: 136 return ELF::R_HEX_B15_PCREL_X; 137 case fixup_Hexagon_B13_PCREL_X: 138 return ELF::R_HEX_B13_PCREL_X; 139 case fixup_Hexagon_B9_PCREL_X: 140 return ELF::R_HEX_B9_PCREL_X; 141 case fixup_Hexagon_B7_PCREL_X: 142 return ELF::R_HEX_B7_PCREL_X; 143 case fixup_Hexagon_16_X: 144 return ELF::R_HEX_16_X; 145 case fixup_Hexagon_12_X: 146 return ELF::R_HEX_12_X; 147 case fixup_Hexagon_11_X: 148 return ELF::R_HEX_11_X; 149 case fixup_Hexagon_10_X: 150 return ELF::R_HEX_10_X; 151 case fixup_Hexagon_9_X: 152 return ELF::R_HEX_9_X; 153 case fixup_Hexagon_8_X: 154 return ELF::R_HEX_8_X; 155 case fixup_Hexagon_7_X: 156 return ELF::R_HEX_7_X; 157 case fixup_Hexagon_6_X: 158 return ELF::R_HEX_6_X; 159 case fixup_Hexagon_32_PCREL: 160 return ELF::R_HEX_32_PCREL; 161 case fixup_Hexagon_COPY: 162 return ELF::R_HEX_COPY; 163 case fixup_Hexagon_GLOB_DAT: 164 return ELF::R_HEX_GLOB_DAT; 165 case fixup_Hexagon_JMP_SLOT: 166 return ELF::R_HEX_JMP_SLOT; 167 case fixup_Hexagon_RELATIVE: 168 return ELF::R_HEX_RELATIVE; 169 case fixup_Hexagon_PLT_B22_PCREL: 170 return ELF::R_HEX_PLT_B22_PCREL; 171 case fixup_Hexagon_GOTREL_LO16: 172 return ELF::R_HEX_GOTREL_LO16; 173 case fixup_Hexagon_GOTREL_HI16: 174 return ELF::R_HEX_GOTREL_HI16; 175 case fixup_Hexagon_GOTREL_32: 176 return ELF::R_HEX_GOTREL_32; 177 case fixup_Hexagon_GOT_LO16: 178 return ELF::R_HEX_GOT_LO16; 179 case fixup_Hexagon_GOT_HI16: 180 return ELF::R_HEX_GOT_HI16; 181 case fixup_Hexagon_GOT_32: 182 return ELF::R_HEX_GOT_32; 183 case fixup_Hexagon_GOT_16: 184 return ELF::R_HEX_GOT_16; 185 case fixup_Hexagon_DTPMOD_32: 186 return ELF::R_HEX_DTPMOD_32; 187 case fixup_Hexagon_DTPREL_LO16: 188 return ELF::R_HEX_DTPREL_LO16; 189 case fixup_Hexagon_DTPREL_HI16: 190 return ELF::R_HEX_DTPREL_HI16; 191 case fixup_Hexagon_DTPREL_32: 192 return ELF::R_HEX_DTPREL_32; 193 case fixup_Hexagon_DTPREL_16: 194 return ELF::R_HEX_DTPREL_16; 195 case fixup_Hexagon_GD_PLT_B22_PCREL: 196 return ELF::R_HEX_GD_PLT_B22_PCREL; 197 case fixup_Hexagon_LD_PLT_B22_PCREL: 198 return ELF::R_HEX_LD_PLT_B22_PCREL; 199 case fixup_Hexagon_GD_GOT_LO16: 200 return ELF::R_HEX_GD_GOT_LO16; 201 case fixup_Hexagon_GD_GOT_HI16: 202 return ELF::R_HEX_GD_GOT_HI16; 203 case fixup_Hexagon_GD_GOT_32: 204 return ELF::R_HEX_GD_GOT_32; 205 case fixup_Hexagon_GD_GOT_16: 206 return ELF::R_HEX_GD_GOT_16; 207 case fixup_Hexagon_LD_GOT_LO16: 208 return ELF::R_HEX_LD_GOT_LO16; 209 case fixup_Hexagon_LD_GOT_HI16: 210 return ELF::R_HEX_LD_GOT_HI16; 211 case fixup_Hexagon_LD_GOT_32: 212 return ELF::R_HEX_LD_GOT_32; 213 case fixup_Hexagon_LD_GOT_16: 214 return ELF::R_HEX_LD_GOT_16; 215 case fixup_Hexagon_IE_LO16: 216 return ELF::R_HEX_IE_LO16; 217 case fixup_Hexagon_IE_HI16: 218 return ELF::R_HEX_IE_HI16; 219 case fixup_Hexagon_IE_32: 220 return ELF::R_HEX_IE_32; 221 case fixup_Hexagon_IE_GOT_LO16: 222 return ELF::R_HEX_IE_GOT_LO16; 223 case fixup_Hexagon_IE_GOT_HI16: 224 return ELF::R_HEX_IE_GOT_HI16; 225 case fixup_Hexagon_IE_GOT_32: 226 return ELF::R_HEX_IE_GOT_32; 227 case fixup_Hexagon_IE_GOT_16: 228 return ELF::R_HEX_IE_GOT_16; 229 case fixup_Hexagon_TPREL_LO16: 230 return ELF::R_HEX_TPREL_LO16; 231 case fixup_Hexagon_TPREL_HI16: 232 return ELF::R_HEX_TPREL_HI16; 233 case fixup_Hexagon_TPREL_32: 234 return ELF::R_HEX_TPREL_32; 235 case fixup_Hexagon_TPREL_16: 236 return ELF::R_HEX_TPREL_16; 237 case fixup_Hexagon_6_PCREL_X: 238 return ELF::R_HEX_6_PCREL_X; 239 case fixup_Hexagon_GOTREL_32_6_X: 240 return ELF::R_HEX_GOTREL_32_6_X; 241 case fixup_Hexagon_GOTREL_16_X: 242 return ELF::R_HEX_GOTREL_16_X; 243 case fixup_Hexagon_GOTREL_11_X: 244 return ELF::R_HEX_GOTREL_11_X; 245 case fixup_Hexagon_GOT_32_6_X: 246 return ELF::R_HEX_GOT_32_6_X; 247 case fixup_Hexagon_GOT_16_X: 248 return ELF::R_HEX_GOT_16_X; 249 case fixup_Hexagon_GOT_11_X: 250 return ELF::R_HEX_GOT_11_X; 251 case fixup_Hexagon_DTPREL_32_6_X: 252 return ELF::R_HEX_DTPREL_32_6_X; 253 case fixup_Hexagon_DTPREL_16_X: 254 return ELF::R_HEX_DTPREL_16_X; 255 case fixup_Hexagon_DTPREL_11_X: 256 return ELF::R_HEX_DTPREL_11_X; 257 case fixup_Hexagon_GD_GOT_32_6_X: 258 return ELF::R_HEX_GD_GOT_32_6_X; 259 case fixup_Hexagon_GD_GOT_16_X: 260 return ELF::R_HEX_GD_GOT_16_X; 261 case fixup_Hexagon_GD_GOT_11_X: 262 return ELF::R_HEX_GD_GOT_11_X; 263 case fixup_Hexagon_LD_GOT_32_6_X: 264 return ELF::R_HEX_LD_GOT_32_6_X; 265 case fixup_Hexagon_LD_GOT_16_X: 266 return ELF::R_HEX_LD_GOT_16_X; 267 case fixup_Hexagon_LD_GOT_11_X: 268 return ELF::R_HEX_LD_GOT_11_X; 269 case fixup_Hexagon_IE_32_6_X: 270 return ELF::R_HEX_IE_32_6_X; 271 case fixup_Hexagon_IE_16_X: 272 return ELF::R_HEX_IE_16_X; 273 case fixup_Hexagon_IE_GOT_32_6_X: 274 return ELF::R_HEX_IE_GOT_32_6_X; 275 case fixup_Hexagon_IE_GOT_16_X: 276 return ELF::R_HEX_IE_GOT_16_X; 277 case fixup_Hexagon_IE_GOT_11_X: 278 return ELF::R_HEX_IE_GOT_11_X; 279 case fixup_Hexagon_TPREL_32_6_X: 280 return ELF::R_HEX_TPREL_32_6_X; 281 case fixup_Hexagon_TPREL_16_X: 282 return ELF::R_HEX_TPREL_16_X; 283 case fixup_Hexagon_TPREL_11_X: 284 return ELF::R_HEX_TPREL_11_X; 285 case fixup_Hexagon_23_REG: 286 return ELF::R_HEX_23_REG; 287 } 288 } 289 290 MCObjectWriter *llvm::createHexagonELFObjectWriter(raw_pwrite_stream &OS, 291 uint8_t OSABI, 292 StringRef CPU) { 293 MCELFObjectTargetWriter *MOTW = new HexagonELFObjectWriter(OSABI, CPU); 294 return createELFObjectWriter(MOTW, OS, /*IsLittleEndian*/ true); 295 } 296
