contrib/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonELFObjectWriter.cpp

   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/MCObjectWriter.h"
  15 #include "llvm/MC/MCValue.h"
  16 #include "llvm/Support/Debug.h"
  17 #include "llvm/Support/raw_ostream.h"
  18
  19 #define DEBUG_TYPE "hexagon-elf-writer"
  20
  21 using namespace llvm;
  22 using namespace Hexagon;
  23
  24 namespace {
  25
  26 class HexagonELFObjectWriter : public MCELFObjectTargetWriter {
  27 private:
  28   StringRef CPU;
  29
  30 public:
  31   HexagonELFObjectWriter(uint8_t OSABI, StringRef C);
  32
  33   unsigned getRelocType(MCContext &Ctx, MCValue const &Target,
  34                         MCFixup const &Fixup, bool IsPCRel) const override;
  35 };
  36 }
  37
  38 HexagonELFObjectWriter::HexagonELFObjectWriter(uint8_t OSABI, StringRef C)
  39     : MCELFObjectTargetWriter(/*Is64bit*/ false, OSABI, ELF::EM_HEXAGON,
  40                               /*HasRelocationAddend*/ true),
  41       CPU(C) {}
  42
  43 unsigned HexagonELFObjectWriter::getRelocType(MCContext &Ctx,
  44                                               MCValue const &Target,
  45                                               MCFixup const &Fixup,
  46                                               bool IsPCRel) const {
  47   MCSymbolRefExpr::VariantKind Variant = Target.getAccessVariant();
  48   switch ((unsigned)Fixup.getKind()) {
  49   default:
  50     report_fatal_error("Unrecognized relocation type");
  51     break;
  52   case FK_Data_4:
  53     switch(Variant) {
  54     case MCSymbolRefExpr::VariantKind::VK_DTPREL:
  55       return ELF::R_HEX_DTPREL_32;
  56     case MCSymbolRefExpr::VariantKind::VK_GOT:
  57       return ELF::R_HEX_GOT_32;
  58     case MCSymbolRefExpr::VariantKind::VK_GOTREL:
  59       return ELF::R_HEX_GOTREL_32;
  60     case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
  61       return ELF::R_HEX_GD_GOT_32;
  62     case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE:
  63       return ELF::R_HEX_IE_32;
  64     case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
  65       return ELF::R_HEX_IE_GOT_32;
  66     case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
  67       return ELF::R_HEX_LD_GOT_32;
  68     case MCSymbolRefExpr::VariantKind::VK_Hexagon_PCREL:
  69       return ELF::R_HEX_32_PCREL;
  70     case MCSymbolRefExpr::VariantKind::VK_TPREL:
  71       return ELF::R_HEX_TPREL_32;
  72     case MCSymbolRefExpr::VariantKind::VK_None:
  73       return IsPCRel ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32;
  74     default:
  75       report_fatal_error("Unrecognized variant type");
  76     };
  77   case FK_PCRel_4:
  78     return ELF::R_HEX_32_PCREL;
  79   case FK_Data_2:
  80     switch(Variant) {
  81     case MCSymbolRefExpr::VariantKind::VK_DTPREL:
  82       return ELF::R_HEX_DTPREL_16;
  83     case MCSymbolRefExpr::VariantKind::VK_GOT:
  84       return ELF::R_HEX_GOT_16;
  85     case MCSymbolRefExpr::VariantKind::VK_Hexagon_GD_GOT:
  86       return ELF::R_HEX_GD_GOT_16;
  87     case MCSymbolRefExpr::VariantKind::VK_Hexagon_IE_GOT:
  88       return ELF::R_HEX_IE_GOT_16;
  89     case MCSymbolRefExpr::VariantKind::VK_Hexagon_LD_GOT:
  90       return ELF::R_HEX_LD_GOT_16;
  91     case MCSymbolRefExpr::VariantKind::VK_TPREL:
  92       return ELF::R_HEX_TPREL_16;
  93     case MCSymbolRefExpr::VariantKind::VK_None:
  94       return ELF::R_HEX_16;
  95     default:
  96       report_fatal_error("Unrecognized variant type");
  97     };
  98   case FK_Data_1:
  99     return ELF::R_HEX_8;
 100   case fixup_Hexagon_B22_PCREL:
 101     return ELF::R_HEX_B22_PCREL;
 102   case fixup_Hexagon_B15_PCREL:
 103     return ELF::R_HEX_B15_PCREL;
 104   case fixup_Hexagon_B7_PCREL:
 105     return ELF::R_HEX_B7_PCREL;
 106   case fixup_Hexagon_LO16:
 107     return ELF::R_HEX_LO16;
 108   case fixup_Hexagon_HI16:
 109     return ELF::R_HEX_HI16;
 110   case fixup_Hexagon_32:
 111     return ELF::R_HEX_32;
 112   case fixup_Hexagon_16:
 113     return ELF::R_HEX_16;
 114   case fixup_Hexagon_8:
 115     return ELF::R_HEX_8;
 116   case fixup_Hexagon_GPREL16_0:
 117     return ELF::R_HEX_GPREL16_0;
 118   case fixup_Hexagon_GPREL16_1:
 119     return ELF::R_HEX_GPREL16_1;
 120   case fixup_Hexagon_GPREL16_2:
 121     return ELF::R_HEX_GPREL16_2;
 122   case fixup_Hexagon_GPREL16_3:
 123     return ELF::R_HEX_GPREL16_3;
 124   case fixup_Hexagon_HL16:
 125     return ELF::R_HEX_HL16;
 126   case fixup_Hexagon_B13_PCREL:
 127     return ELF::R_HEX_B13_PCREL;
 128   case fixup_Hexagon_B9_PCREL:
 129     return ELF::R_HEX_B9_PCREL;
 130   case fixup_Hexagon_B32_PCREL_X:
 131     return ELF::R_HEX_B32_PCREL_X;
 132   case fixup_Hexagon_32_6_X:
 133     return ELF::R_HEX_32_6_X;
 134   case fixup_Hexagon_B22_PCREL_X:
 135     return ELF::R_HEX_B22_PCREL_X;
 136   case fixup_Hexagon_B15_PCREL_X:
 137     return ELF::R_HEX_B15_PCREL_X;
 138   case fixup_Hexagon_B13_PCREL_X:
 139     return ELF::R_HEX_B13_PCREL_X;
 140   case fixup_Hexagon_B9_PCREL_X:
 141     return ELF::R_HEX_B9_PCREL_X;
 142   case fixup_Hexagon_B7_PCREL_X:
 143     return ELF::R_HEX_B7_PCREL_X;
 144   case fixup_Hexagon_16_X:
 145     return ELF::R_HEX_16_X;
 146   case fixup_Hexagon_12_X:
 147     return ELF::R_HEX_12_X;
 148   case fixup_Hexagon_11_X:
 149     return ELF::R_HEX_11_X;
 150   case fixup_Hexagon_10_X:
 151     return ELF::R_HEX_10_X;
 152   case fixup_Hexagon_9_X:
 153     return ELF::R_HEX_9_X;
 154   case fixup_Hexagon_8_X:
 155     return ELF::R_HEX_8_X;
 156   case fixup_Hexagon_7_X:
 157     return ELF::R_HEX_7_X;
 158   case fixup_Hexagon_6_X:
 159     return ELF::R_HEX_6_X;
 160   case fixup_Hexagon_32_PCREL:
 161     return ELF::R_HEX_32_PCREL;
 162   case fixup_Hexagon_COPY:
 163     return ELF::R_HEX_COPY;
 164   case fixup_Hexagon_GLOB_DAT:
 165     return ELF::R_HEX_GLOB_DAT;
 166   case fixup_Hexagon_JMP_SLOT:
 167     return ELF::R_HEX_JMP_SLOT;
 168   case fixup_Hexagon_RELATIVE:
 169     return ELF::R_HEX_RELATIVE;
 170   case fixup_Hexagon_PLT_B22_PCREL:
 171     return ELF::R_HEX_PLT_B22_PCREL;
 172   case fixup_Hexagon_GOTREL_LO16:
 173     return ELF::R_HEX_GOTREL_LO16;
 174   case fixup_Hexagon_GOTREL_HI16:
 175     return ELF::R_HEX_GOTREL_HI16;
 176   case fixup_Hexagon_GOTREL_32:
 177     return ELF::R_HEX_GOTREL_32;
 178   case fixup_Hexagon_GOT_LO16:
 179     return ELF::R_HEX_GOT_LO16;
 180   case fixup_Hexagon_GOT_HI16:
 181     return ELF::R_HEX_GOT_HI16;
 182   case fixup_Hexagon_GOT_32:
 183     return ELF::R_HEX_GOT_32;
 184   case fixup_Hexagon_GOT_16:
 185     return ELF::R_HEX_GOT_16;
 186   case fixup_Hexagon_DTPMOD_32:
 187     return ELF::R_HEX_DTPMOD_32;
 188   case fixup_Hexagon_DTPREL_LO16:
 189     return ELF::R_HEX_DTPREL_LO16;
 190   case fixup_Hexagon_DTPREL_HI16:
 191     return ELF::R_HEX_DTPREL_HI16;
 192   case fixup_Hexagon_DTPREL_32:
 193     return ELF::R_HEX_DTPREL_32;
 194   case fixup_Hexagon_DTPREL_16:
 195     return ELF::R_HEX_DTPREL_16;
 196   case fixup_Hexagon_GD_PLT_B22_PCREL:
 197     return ELF::R_HEX_GD_PLT_B22_PCREL;
 198   case fixup_Hexagon_LD_PLT_B22_PCREL:
 199     return ELF::R_HEX_LD_PLT_B22_PCREL;
 200   case fixup_Hexagon_GD_GOT_LO16:
 201     return ELF::R_HEX_GD_GOT_LO16;
 202   case fixup_Hexagon_GD_GOT_HI16:
 203     return ELF::R_HEX_GD_GOT_HI16;
 204   case fixup_Hexagon_GD_GOT_32:
 205     return ELF::R_HEX_GD_GOT_32;
 206   case fixup_Hexagon_GD_GOT_16:
 207     return ELF::R_HEX_GD_GOT_16;
 208   case fixup_Hexagon_LD_GOT_LO16:
 209     return ELF::R_HEX_LD_GOT_LO16;
 210   case fixup_Hexagon_LD_GOT_HI16:
 211     return ELF::R_HEX_LD_GOT_HI16;
 212   case fixup_Hexagon_LD_GOT_32:
 213     return ELF::R_HEX_LD_GOT_32;
 214   case fixup_Hexagon_LD_GOT_16:
 215     return ELF::R_HEX_LD_GOT_16;
 216   case fixup_Hexagon_IE_LO16:
 217     return ELF::R_HEX_IE_LO16;
 218   case fixup_Hexagon_IE_HI16:
 219     return ELF::R_HEX_IE_HI16;
 220   case fixup_Hexagon_IE_32:
 221     return ELF::R_HEX_IE_32;
 222   case fixup_Hexagon_IE_GOT_LO16:
 223     return ELF::R_HEX_IE_GOT_LO16;
 224   case fixup_Hexagon_IE_GOT_HI16:
 225     return ELF::R_HEX_IE_GOT_HI16;
 226   case fixup_Hexagon_IE_GOT_32:
 227     return ELF::R_HEX_IE_GOT_32;
 228   case fixup_Hexagon_IE_GOT_16:
 229     return ELF::R_HEX_IE_GOT_16;
 230   case fixup_Hexagon_TPREL_LO16:
 231     return ELF::R_HEX_TPREL_LO16;
 232   case fixup_Hexagon_TPREL_HI16:
 233     return ELF::R_HEX_TPREL_HI16;
 234   case fixup_Hexagon_TPREL_32:
 235     return ELF::R_HEX_TPREL_32;
 236   case fixup_Hexagon_TPREL_16:
 237     return ELF::R_HEX_TPREL_16;
 238   case fixup_Hexagon_6_PCREL_X:
 239     return ELF::R_HEX_6_PCREL_X;
 240   case fixup_Hexagon_GOTREL_32_6_X:
 241     return ELF::R_HEX_GOTREL_32_6_X;
 242   case fixup_Hexagon_GOTREL_16_X:
 243     return ELF::R_HEX_GOTREL_16_X;
 244   case fixup_Hexagon_GOTREL_11_X:
 245     return ELF::R_HEX_GOTREL_11_X;
 246   case fixup_Hexagon_GOT_32_6_X:
 247     return ELF::R_HEX_GOT_32_6_X;
 248   case fixup_Hexagon_GOT_16_X:
 249     return ELF::R_HEX_GOT_16_X;
 250   case fixup_Hexagon_GOT_11_X:
 251     return ELF::R_HEX_GOT_11_X;
 252   case fixup_Hexagon_DTPREL_32_6_X:
 253     return ELF::R_HEX_DTPREL_32_6_X;
 254   case fixup_Hexagon_DTPREL_16_X:
 255     return ELF::R_HEX_DTPREL_16_X;
 256   case fixup_Hexagon_DTPREL_11_X:
 257     return ELF::R_HEX_DTPREL_11_X;
 258   case fixup_Hexagon_GD_GOT_32_6_X:
 259     return ELF::R_HEX_GD_GOT_32_6_X;
 260   case fixup_Hexagon_GD_GOT_16_X:
 261     return ELF::R_HEX_GD_GOT_16_X;
 262   case fixup_Hexagon_GD_GOT_11_X:
 263     return ELF::R_HEX_GD_GOT_11_X;
 264   case fixup_Hexagon_LD_GOT_32_6_X:
 265     return ELF::R_HEX_LD_GOT_32_6_X;
 266   case fixup_Hexagon_LD_GOT_16_X:
 267     return ELF::R_HEX_LD_GOT_16_X;
 268   case fixup_Hexagon_LD_GOT_11_X:
 269     return ELF::R_HEX_LD_GOT_11_X;
 270   case fixup_Hexagon_IE_32_6_X:
 271     return ELF::R_HEX_IE_32_6_X;
 272   case fixup_Hexagon_IE_16_X:
 273     return ELF::R_HEX_IE_16_X;
 274   case fixup_Hexagon_IE_GOT_32_6_X:
 275     return ELF::R_HEX_IE_GOT_32_6_X;
 276   case fixup_Hexagon_IE_GOT_16_X:
 277     return ELF::R_HEX_IE_GOT_16_X;
 278   case fixup_Hexagon_IE_GOT_11_X:
 279     return ELF::R_HEX_IE_GOT_11_X;
 280   case fixup_Hexagon_TPREL_32_6_X:
 281     return ELF::R_HEX_TPREL_32_6_X;
 282   case fixup_Hexagon_TPREL_16_X:
 283     return ELF::R_HEX_TPREL_16_X;
 284   case fixup_Hexagon_TPREL_11_X:
 285     return ELF::R_HEX_TPREL_11_X;
 286   case fixup_Hexagon_23_REG:
 287     return ELF::R_HEX_23_REG;
 288   case fixup_Hexagon_27_REG:
 289     return ELF::R_HEX_27_REG;
 290   case fixup_Hexagon_GD_PLT_B22_PCREL_X:
 291     return ELF::R_HEX_GD_PLT_B22_PCREL_X;
 292   case fixup_Hexagon_GD_PLT_B32_PCREL_X:
 293     return ELF::R_HEX_GD_PLT_B32_PCREL_X;
 294   case fixup_Hexagon_LD_PLT_B22_PCREL_X:
 295     return ELF::R_HEX_LD_PLT_B22_PCREL_X;
 296   case fixup_Hexagon_LD_PLT_B32_PCREL_X:
 297     return ELF::R_HEX_LD_PLT_B32_PCREL_X;
 298   }
 299 }
 300
 301 std::unique_ptr<MCObjectTargetWriter>
 302 llvm::createHexagonELFObjectWriter(uint8_t OSABI, StringRef CPU) {
 303   return llvm::make_unique<HexagonELFObjectWriter>(OSABI, CPU);
 304 }