lib/Target/Hexagon/MCTargetDesc/HexagonELFObjectWriter.cpp

   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 #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 (Fixup.getTargetKind()) {
  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   case fixup_Hexagon_27_REG:
 288     return ELF::R_HEX_27_REG;
 289   case fixup_Hexagon_GD_PLT_B22_PCREL_X:
 290     return ELF::R_HEX_GD_PLT_B22_PCREL_X;
 291   case fixup_Hexagon_GD_PLT_B32_PCREL_X:
 292     return ELF::R_HEX_GD_PLT_B32_PCREL_X;
 293   case fixup_Hexagon_LD_PLT_B22_PCREL_X:
 294     return ELF::R_HEX_LD_PLT_B22_PCREL_X;
 295   case fixup_Hexagon_LD_PLT_B32_PCREL_X:
 296     return ELF::R_HEX_LD_PLT_B32_PCREL_X;
 297   }
 298 }
 299
 300 std::unique_ptr<MCObjectTargetWriter>
 301 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
 302   return std::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
 303 }