1 files changed, 149 insertions, 0 deletions
diff --git a/ELF/Arch/SPARCV9.cpp b/ELF/Arch/SPARCV9.cpp
new file mode 100644
index 000000000000..1f977c1e9cf2
--- /dev/null
+++ b/ELF/Arch/SPARCV9.cpp
@@ -0,0 +1,149 @@
+//===- SPARCV9.cpp --------------------------------------------------------===//
+//
+//                             The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Error.h"
+#include "InputFiles.h"
+#include "Symbols.h"
+#include "SyntheticSections.h"
+#include "Target.h"
+#include "llvm/Support/Endian.h"
+
+using namespace llvm;
+using namespace llvm::support::endian;
+using namespace llvm::ELF;
+using namespace lld;
+using namespace lld::elf;
+
+namespace {
+class SPARCV9 final : public TargetInfo {
+public:
+  SPARCV9();
+  RelExpr getRelExpr(uint32_t Type, const SymbolBody &S,
+                     const uint8_t *Loc) const override;
+  void writePlt(uint8_t *Buf, uint64_t GotEntryAddr, uint64_t PltEntryAddr,
+                int32_t Index, unsigned RelOff) const override;
+  void relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const override;
+};
+} // namespace
+
+SPARCV9::SPARCV9() {
+  CopyRel = R_SPARC_COPY;
+  GotRel = R_SPARC_GLOB_DAT;
+  PltRel = R_SPARC_JMP_SLOT;
+  RelativeRel = R_SPARC_RELATIVE;
+  GotEntrySize = 8;
+  PltEntrySize = 32;
+  PltHeaderSize = 4 * PltEntrySize;
+
+  PageSize = 8192;
+  DefaultMaxPageSize = 0x100000;
+  DefaultImageBase = 0x100000;
+}
+
+RelExpr SPARCV9::getRelExpr(uint32_t Type, const SymbolBody &S,
+                            const uint8_t *Loc) const {
+  switch (Type) {
+  case R_SPARC_32:
+  case R_SPARC_UA32:
+  case R_SPARC_64:
+  case R_SPARC_UA64:
+    return R_ABS;
+  case R_SPARC_PC10:
+  case R_SPARC_PC22:
+  case R_SPARC_DISP32:
+  case R_SPARC_WDISP30:
+    return R_PC;
+  case R_SPARC_GOT10:
+    return R_GOT_OFF;
+  case R_SPARC_GOT22:
+    return R_GOT_OFF;
+  case R_SPARC_WPLT30:
+    return R_PLT_PC;
+  case R_SPARC_NONE:
+    return R_NONE;
+  default:
+    error(toString(S.File) + ": unknown relocation type: " + toString(Type));
+    return R_HINT;
+  }
+}
+
+void SPARCV9::relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const {
+  switch (Type) {
+  case R_SPARC_32:
+  case R_SPARC_UA32:
+    // V-word32
+    checkUInt<32>(Loc, Val, Type);
+    write32be(Loc, Val);
+    break;
+  case R_SPARC_DISP32:
+    // V-disp32
+    checkInt<32>(Loc, Val, Type);
+    write32be(Loc, Val);
+    break;
+  case R_SPARC_WDISP30:
+  case R_SPARC_WPLT30:
+    // V-disp30
+    checkInt<32>(Loc, Val, Type);
+    write32be(Loc, (read32be(Loc) & ~0x3fffffff) | ((Val >> 2) & 0x3fffffff));
+    break;
+  case R_SPARC_22:
+    // V-imm22
+    checkUInt<22>(Loc, Val, Type);
+    write32be(Loc, (read32be(Loc) & ~0x003fffff) | (Val & 0x003fffff));
+    break;
+  case R_SPARC_GOT22:
+  case R_SPARC_PC22:
+    // T-imm22
+    write32be(Loc, (read32be(Loc) & ~0x003fffff) | ((Val >> 10) & 0x003fffff));
+    break;
+  case R_SPARC_WDISP19:
+    // V-disp19
+    checkInt<21>(Loc, Val, Type);
+    write32be(Loc, (read32be(Loc) & ~0x0007ffff) | ((Val >> 2) & 0x0007ffff));
+    break;
+  case R_SPARC_GOT10:
+  case R_SPARC_PC10:
+    // T-simm10
+    write32be(Loc, (read32be(Loc) & ~0x000003ff) | (Val & 0x000003ff));
+    break;
+  case R_SPARC_64:
+  case R_SPARC_UA64:
+  case R_SPARC_GLOB_DAT:
+    // V-xword64
+    write64be(Loc, Val);
+    break;
+  default:
+    error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
+  }
+}
+
+void SPARCV9::writePlt(uint8_t *Buf, uint64_t GotEntryAddr,
+                       uint64_t PltEntryAddr, int32_t Index,
+                       unsigned RelOff) const {
+  const uint8_t PltData[] = {
+      0x03, 0x00, 0x00, 0x00, // sethi   (. - .PLT0), %g1
+      0x30, 0x68, 0x00, 0x00, // ba,a    %xcc, .PLT1
+      0x01, 0x00, 0x00, 0x00, // nop
+      0x01, 0x00, 0x00, 0x00, // nop
+      0x01, 0x00, 0x00, 0x00, // nop
+      0x01, 0x00, 0x00, 0x00, // nop
+      0x01, 0x00, 0x00, 0x00, // nop
+      0x01, 0x00, 0x00, 0x00  // nop
+  };
+  memcpy(Buf, PltData, sizeof(PltData));
+
+  uint64_t Off = PltHeaderSize + Index * PltEntrySize;
+  relocateOne(Buf, R_SPARC_22, Off);
+  relocateOne(Buf + 4, R_SPARC_WDISP19, -(Off + 4 - PltEntrySize));
+}
+
+TargetInfo *elf::getSPARCV9TargetInfo() {
+  static SPARCV9 Target;
+  return &Target;
+}