--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lld/ELF/Arch/SPARCV9.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,154 @@
+//===- SPARCV9.cpp --------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "InputFiles.h"
+#include "Symbols.h"
+#include "SyntheticSections.h"
+#include "Target.h"
+#include "lld/Common/ErrorHandler.h"
+#include "llvm/Support/Endian.h"
+
+using namespace llvm;
+using namespace llvm::support::endian;
+using namespace llvm::ELF;
+
+namespace lld {
+namespace elf {
+
+namespace {
+class SPARCV9 final : public TargetInfo {
+public:
+  SPARCV9();
+  RelExpr getRelExpr(RelType type, const Symbol &s,
+                     const uint8_t *loc) const override;
+  void writePlt(uint8_t *buf, const Symbol &sym,
+                uint64_t pltEntryAddr) const override;
+  void relocate(uint8_t *loc, const Relocation &rel,
+                uint64_t val) const override;
+};
+} // namespace
+
+SPARCV9::SPARCV9() {
+  copyRel = R_SPARC_COPY;
+  gotRel = R_SPARC_GLOB_DAT;
+  noneRel = R_SPARC_NONE;
+  pltRel = R_SPARC_JMP_SLOT;
+  relativeRel = R_SPARC_RELATIVE;
+  symbolicRel = R_SPARC_64;
+  pltEntrySize = 32;
+  pltHeaderSize = 4 * pltEntrySize;
+
+  defaultCommonPageSize = 8192;
+  defaultMaxPageSize = 0x100000;
+  defaultImageBase = 0x100000;
+}
+
+RelExpr SPARCV9::getRelExpr(RelType type, const Symbol &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(getErrorLocation(loc) + "unknown relocation (" + Twine(type) +
+          ") against symbol " + toString(s));
+    return R_NONE;
+  }
+}
+
+void SPARCV9::relocate(uint8_t *loc, const Relocation &rel,
+                       uint64_t val) const {
+  switch (rel.type) {
+  case R_SPARC_32:
+  case R_SPARC_UA32:
+    // V-word32
+    checkUInt(loc, val, 32, rel);
+    write32be(loc, val);
+    break;
+  case R_SPARC_DISP32:
+    // V-disp32
+    checkInt(loc, val, 32, rel);
+    write32be(loc, val);
+    break;
+  case R_SPARC_WDISP30:
+  case R_SPARC_WPLT30:
+    // V-disp30
+    checkInt(loc, val, 32, rel);
+    write32be(loc, (read32be(loc) & ~0x3fffffff) | ((val >> 2) & 0x3fffffff));
+    break;
+  case R_SPARC_22:
+    // V-imm22
+    checkUInt(loc, val, 22, rel);
+    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(loc, val, 21, rel);
+    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:
+    // V-xword64
+    write64be(loc, val);
+    break;
+  default:
+    llvm_unreachable("unknown relocation");
+  }
+}
+
+void SPARCV9::writePlt(uint8_t *buf, const Symbol & /*sym*/,
+                       uint64_t pltEntryAddr) 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 = pltEntryAddr - in.plt->getVA();
+  relocateNoSym(buf, R_SPARC_22, off);
+  relocateNoSym(buf + 4, R_SPARC_WDISP19, -(off + 4 - pltEntrySize));
+}
+
+TargetInfo *getSPARCV9TargetInfo() {
+  static SPARCV9 target;
+  return ⌖
+}
+
+} // namespace elf
+} // namespace lld