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/Support/Debug.h"
  15 #include "llvm/Support/raw_ostream.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(MCValue const &Target, MCFixup const &Fixup,
  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(MCValue const &/*Target*/,
  42                                               MCFixup const &Fixup,
  43                                               bool IsPCRel) const {
  44   // determine the type of the relocation
  45   unsigned Type = (unsigned)ELF::R_HEX_NONE;
  46   unsigned Kind = (unsigned)Fixup.getKind();
  47
  48   switch (Kind) {
  49     default:
  50       DEBUG(dbgs() << "unrecognized relocation " << Fixup.getKind() << "\n");
  51       llvm_unreachable("Unimplemented Fixup kind!");
  52       break;
  53     case FK_Data_4:
  54       Type = (IsPCRel) ? ELF::R_HEX_32_PCREL : ELF::R_HEX_32;
  55       break;
  56     case FK_PCRel_4:
  57       Type = ELF::R_HEX_32_PCREL;
  58       break;
  59     case FK_Data_2:
  60       Type = ELF::R_HEX_16;
  61       break;
  62    case FK_Data_1:
  63       Type = ELF::R_HEX_8;
  64       break;
  65     case fixup_Hexagon_B22_PCREL:
  66       Type = ELF::R_HEX_B22_PCREL;
  67       break;
  68     case fixup_Hexagon_B15_PCREL:
  69       Type = ELF::R_HEX_B15_PCREL;
  70       break;
  71     case fixup_Hexagon_B7_PCREL:
  72       Type = ELF::R_HEX_B7_PCREL;
  73       break;
  74     case fixup_Hexagon_LO16:
  75       Type = ELF::R_HEX_LO16;
  76       break;
  77     case fixup_Hexagon_HI16:
  78       Type = ELF::R_HEX_HI16;
  79       break;
  80     case fixup_Hexagon_32:
  81       Type = ELF::R_HEX_32;
  82       break;
  83     case fixup_Hexagon_16:
  84       Type = ELF::R_HEX_16;
  85       break;
  86     case fixup_Hexagon_8:
  87       Type = ELF::R_HEX_8;
  88       break;
  89     case fixup_Hexagon_GPREL16_0:
  90       Type = ELF::R_HEX_GPREL16_0;
  91       break;
  92     case fixup_Hexagon_GPREL16_1:
  93       Type = ELF::R_HEX_GPREL16_1;
  94       break;
  95     case fixup_Hexagon_GPREL16_2:
  96       Type = ELF::R_HEX_GPREL16_2;
  97       break;
  98     case fixup_Hexagon_GPREL16_3:
  99       Type = ELF::R_HEX_GPREL16_3;
 100       break;
 101     case fixup_Hexagon_HL16:
 102       Type = ELF::R_HEX_HL16;
 103       break;
 104     case fixup_Hexagon_B13_PCREL:
 105       Type = ELF::R_HEX_B13_PCREL;
 106       break;
 107     case fixup_Hexagon_B9_PCREL:
 108       Type = ELF::R_HEX_B9_PCREL;
 109       break;
 110     case fixup_Hexagon_B32_PCREL_X:
 111       Type = ELF::R_HEX_B32_PCREL_X;
 112       break;
 113     case fixup_Hexagon_32_6_X:
 114       Type = ELF::R_HEX_32_6_X;
 115       break;
 116     case fixup_Hexagon_B22_PCREL_X:
 117       Type = ELF::R_HEX_B22_PCREL_X;
 118       break;
 119     case fixup_Hexagon_B15_PCREL_X:
 120       Type = ELF::R_HEX_B15_PCREL_X;
 121       break;
 122     case fixup_Hexagon_B13_PCREL_X:
 123       Type = ELF::R_HEX_B13_PCREL_X;
 124       break;
 125     case fixup_Hexagon_B9_PCREL_X:
 126       Type = ELF::R_HEX_B9_PCREL_X;
 127       break;
 128     case fixup_Hexagon_B7_PCREL_X:
 129       Type = ELF::R_HEX_B7_PCREL_X;
 130       break;
 131     case fixup_Hexagon_16_X:
 132       Type = ELF::R_HEX_16_X;
 133       break;
 134     case fixup_Hexagon_12_X:
 135       Type = ELF::R_HEX_12_X;
 136       break;
 137     case fixup_Hexagon_11_X:
 138       Type = ELF::R_HEX_11_X;
 139       break;
 140     case fixup_Hexagon_10_X:
 141       Type = ELF::R_HEX_10_X;
 142       break;
 143     case fixup_Hexagon_9_X:
 144       Type = ELF::R_HEX_9_X;
 145       break;
 146     case fixup_Hexagon_8_X:
 147       Type = ELF::R_HEX_8_X;
 148       break;
 149     case fixup_Hexagon_7_X:
 150       Type = ELF::R_HEX_7_X;
 151       break;
 152     case fixup_Hexagon_6_X:
 153       Type = ELF::R_HEX_6_X;
 154       break;
 155     case fixup_Hexagon_32_PCREL:
 156       Type = ELF::R_HEX_32_PCREL;
 157       break;
 158     case fixup_Hexagon_COPY:
 159       Type = ELF::R_HEX_COPY;
 160       break;
 161     case fixup_Hexagon_GLOB_DAT:
 162       Type = ELF::R_HEX_GLOB_DAT;
 163       break;
 164     case fixup_Hexagon_JMP_SLOT:
 165       Type = ELF::R_HEX_JMP_SLOT;
 166       break;
 167     case fixup_Hexagon_RELATIVE:
 168       Type = ELF::R_HEX_RELATIVE;
 169       break;
 170     case fixup_Hexagon_PLT_B22_PCREL:
 171       Type = ELF::R_HEX_PLT_B22_PCREL;
 172       break;
 173     case fixup_Hexagon_GOTREL_LO16:
 174       Type = ELF::R_HEX_GOTREL_LO16;
 175       break;
 176     case fixup_Hexagon_GOTREL_HI16:
 177       Type = ELF::R_HEX_GOTREL_HI16;
 178       break;
 179     case fixup_Hexagon_GOTREL_32:
 180       Type = ELF::R_HEX_GOTREL_32;
 181       break;
 182     case fixup_Hexagon_GOT_LO16:
 183       Type = ELF::R_HEX_GOT_LO16;
 184       break;
 185     case fixup_Hexagon_GOT_HI16:
 186       Type = ELF::R_HEX_GOT_HI16;
 187       break;
 188     case fixup_Hexagon_GOT_32:
 189       Type = ELF::R_HEX_GOT_32;
 190       break;
 191     case fixup_Hexagon_GOT_16:
 192       Type = ELF::R_HEX_GOT_16;
 193       break;
 194     case fixup_Hexagon_DTPMOD_32:
 195       Type = ELF::R_HEX_DTPMOD_32;
 196       break;
 197     case fixup_Hexagon_DTPREL_LO16:
 198       Type = ELF::R_HEX_DTPREL_LO16;
 199       break;
 200     case fixup_Hexagon_DTPREL_HI16:
 201       Type = ELF::R_HEX_DTPREL_HI16;
 202       break;
 203     case fixup_Hexagon_DTPREL_32:
 204       Type = ELF::R_HEX_DTPREL_32;
 205       break;
 206     case fixup_Hexagon_DTPREL_16:
 207       Type = ELF::R_HEX_DTPREL_16;
 208       break;
 209     case fixup_Hexagon_GD_PLT_B22_PCREL:
 210       Type = ELF::R_HEX_GD_PLT_B22_PCREL;
 211       break;
 212     case fixup_Hexagon_LD_PLT_B22_PCREL:
 213       Type = ELF::R_HEX_LD_PLT_B22_PCREL;
 214       break;
 215     case fixup_Hexagon_GD_GOT_LO16:
 216       Type = ELF::R_HEX_GD_GOT_LO16;
 217       break;
 218     case fixup_Hexagon_GD_GOT_HI16:
 219       Type = ELF::R_HEX_GD_GOT_HI16;
 220       break;
 221     case fixup_Hexagon_GD_GOT_32:
 222       Type = ELF::R_HEX_GD_GOT_32;
 223       break;
 224     case fixup_Hexagon_GD_GOT_16:
 225       Type = ELF::R_HEX_GD_GOT_16;
 226       break;
 227     case fixup_Hexagon_LD_GOT_LO16:
 228       Type = ELF::R_HEX_LD_GOT_LO16;
 229       break;
 230     case fixup_Hexagon_LD_GOT_HI16:
 231       Type = ELF::R_HEX_LD_GOT_HI16;
 232       break;
 233     case fixup_Hexagon_LD_GOT_32:
 234       Type = ELF::R_HEX_LD_GOT_32;
 235       break;
 236     case fixup_Hexagon_LD_GOT_16:
 237       Type = ELF::R_HEX_LD_GOT_16;
 238       break;
 239     case fixup_Hexagon_IE_LO16:
 240       Type = ELF::R_HEX_IE_LO16;
 241       break;
 242     case fixup_Hexagon_IE_HI16:
 243       Type = ELF::R_HEX_IE_HI16;
 244       break;
 245     case fixup_Hexagon_IE_32:
 246       Type = ELF::R_HEX_IE_32;
 247       break;
 248     case fixup_Hexagon_IE_GOT_LO16:
 249       Type = ELF::R_HEX_IE_GOT_LO16;
 250       break;
 251     case fixup_Hexagon_IE_GOT_HI16:
 252       Type = ELF::R_HEX_IE_GOT_HI16;
 253       break;
 254     case fixup_Hexagon_IE_GOT_32:
 255       Type = ELF::R_HEX_IE_GOT_32;
 256       break;
 257     case fixup_Hexagon_IE_GOT_16:
 258       Type = ELF::R_HEX_IE_GOT_16;
 259       break;
 260     case fixup_Hexagon_TPREL_LO16:
 261       Type = ELF::R_HEX_TPREL_LO16;
 262       break;
 263     case fixup_Hexagon_TPREL_HI16:
 264       Type = ELF::R_HEX_TPREL_HI16;
 265       break;
 266     case fixup_Hexagon_TPREL_32:
 267       Type = ELF::R_HEX_TPREL_32;
 268       break;
 269     case fixup_Hexagon_TPREL_16:
 270       Type = ELF::R_HEX_TPREL_16;
 271       break;
 272     case fixup_Hexagon_6_PCREL_X:
 273       Type = ELF::R_HEX_6_PCREL_X;
 274       break;
 275     case fixup_Hexagon_GOTREL_32_6_X:
 276       Type = ELF::R_HEX_GOTREL_32_6_X;
 277       break;
 278     case fixup_Hexagon_GOTREL_16_X:
 279       Type = ELF::R_HEX_GOTREL_16_X;
 280       break;
 281     case fixup_Hexagon_GOTREL_11_X:
 282       Type = ELF::R_HEX_GOTREL_11_X;
 283       break;
 284     case fixup_Hexagon_GOT_32_6_X:
 285       Type = ELF::R_HEX_GOT_32_6_X;
 286       break;
 287     case fixup_Hexagon_GOT_16_X:
 288       Type = ELF::R_HEX_GOT_16_X;
 289       break;
 290     case fixup_Hexagon_GOT_11_X:
 291       Type = ELF::R_HEX_GOT_11_X;
 292       break;
 293     case fixup_Hexagon_DTPREL_32_6_X:
 294       Type = ELF::R_HEX_DTPREL_32_6_X;
 295       break;
 296     case fixup_Hexagon_DTPREL_16_X:
 297       Type = ELF::R_HEX_DTPREL_16_X;
 298       break;
 299     case fixup_Hexagon_DTPREL_11_X:
 300       Type = ELF::R_HEX_DTPREL_11_X;
 301       break;
 302     case fixup_Hexagon_GD_GOT_32_6_X:
 303       Type = ELF::R_HEX_GD_GOT_32_6_X;
 304       break;
 305     case fixup_Hexagon_GD_GOT_16_X:
 306       Type = ELF::R_HEX_GD_GOT_16_X;
 307       break;
 308     case fixup_Hexagon_GD_GOT_11_X:
 309       Type = ELF::R_HEX_GD_GOT_11_X;
 310       break;
 311     case fixup_Hexagon_LD_GOT_32_6_X:
 312       Type = ELF::R_HEX_LD_GOT_32_6_X;
 313       break;
 314     case fixup_Hexagon_LD_GOT_16_X:
 315       Type = ELF::R_HEX_LD_GOT_16_X;
 316       break;
 317     case fixup_Hexagon_LD_GOT_11_X:
 318       Type = ELF::R_HEX_LD_GOT_11_X;
 319       break;
 320     case fixup_Hexagon_IE_32_6_X:
 321       Type = ELF::R_HEX_IE_32_6_X;
 322       break;
 323     case fixup_Hexagon_IE_16_X:
 324       Type = ELF::R_HEX_IE_16_X;
 325       break;
 326     case fixup_Hexagon_IE_GOT_32_6_X:
 327       Type = ELF::R_HEX_IE_GOT_32_6_X;
 328       break;
 329     case fixup_Hexagon_IE_GOT_16_X:
 330       Type = ELF::R_HEX_IE_GOT_16_X;
 331       break;
 332     case fixup_Hexagon_IE_GOT_11_X:
 333       Type = ELF::R_HEX_IE_GOT_11_X;
 334       break;
 335     case fixup_Hexagon_TPREL_32_6_X:
 336       Type = ELF::R_HEX_TPREL_32_6_X;
 337       break;
 338     case fixup_Hexagon_TPREL_16_X:
 339       Type = ELF::R_HEX_TPREL_16_X;
 340       break;
 341     case fixup_Hexagon_TPREL_11_X:
 342       Type = ELF::R_HEX_TPREL_11_X;
 343       break;
 344   }
 345   return Type;
 346 }
 347
 348 MCObjectWriter *llvm::createHexagonELFObjectWriter(raw_pwrite_stream &OS,
 349                                                    uint8_t OSABI,
 350                                                    StringRef CPU) {
 351   MCELFObjectTargetWriter *MOTW = new HexagonELFObjectWriter(OSABI, CPU);
 352   return createELFObjectWriter(MOTW, OS, /*IsLittleEndian*/ true);
 353 }