1 files changed, 100 insertions, 0 deletions
diff --git a/js/src/jit/riscv64/Architecture-riscv64.cpp b/js/src/jit/riscv64/Architecture-riscv64.cpp
new file mode 100644
index 0000000000..ea4a364b92
--- /dev/null
+++ b/js/src/jit/riscv64/Architecture-riscv64.cpp
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jit/riscv64/Architecture-riscv64.h"
+
+#include "jit/FlushICache.h"  // js::jit::FlushICache
+#include "jit/RegisterSets.h"
+#include "jit/Simulator.h"
+namespace js {
+namespace jit {
+Registers::Code Registers::FromName(const char* name) {
+  for (size_t i = 0; i < Total; i++) {
+    if (strcmp(GetName(i), name) == 0) {
+      return Code(i);
+    }
+  }
+
+  return Invalid;
+}
+
+FloatRegisters::Code FloatRegisters::FromName(const char* name) {
+  for (size_t i = 0; i < Total; i++) {
+    if (strcmp(GetName(i), name) == 0) {
+      return Code(i);
+    }
+  }
+
+  return Invalid;
+}
+
+FloatRegisterSet FloatRegister::ReduceSetForPush(const FloatRegisterSet& s) {
+#ifdef ENABLE_WASM_SIMD
+#  error "Needs more careful logic if SIMD is enabled"
+#endif
+
+  LiveFloatRegisterSet mod;
+  for (FloatRegisterIterator iter(s); iter.more(); ++iter) {
+    if ((*iter).isSingle()) {
+      // Even for single size registers save complete double register.
+      mod.addUnchecked((*iter).doubleOverlay());
+    } else {
+      mod.addUnchecked(*iter);
+    }
+  }
+  return mod.set();
+}
+
+FloatRegister FloatRegister::singleOverlay() const {
+  MOZ_ASSERT(!isInvalid());
+  if (kind_ == Codes::Double) {
+    return FloatRegister(encoding_, Codes::Single);
+  }
+  return *this;
+}
+
+FloatRegister FloatRegister::doubleOverlay() const {
+  MOZ_ASSERT(!isInvalid());
+  if (kind_ != Codes::Double) {
+    return FloatRegister(encoding_, Codes::Double);
+  }
+  return *this;
+}
+
+uint32_t FloatRegister::GetPushSizeInBytes(
+    const TypedRegisterSet<FloatRegister>& s) {
+#ifdef ENABLE_WASM_SIMD
+#  error "Needs more careful logic if SIMD is enabled"
+#endif
+
+  return s.size() * sizeof(double);
+}
+void FlushICache(void* code, size_t size) {
+#if defined(JS_SIMULATOR)
+  js::jit::SimulatorProcess::FlushICache(code, size);
+
+#elif defined(__linux__)
+#  if defined(__GNUC__)
+  intptr_t end = reinterpret_cast<intptr_t>(code) + size;
+  __builtin___clear_cache(reinterpret_cast<char*>(code),
+                          reinterpret_cast<char*>(end));
+
+#  else
+  _flush_cache(reinterpret_cast<char*>(code), size, BCACHE);
+#  endif
+#else
+#  error "Unsupported platform"
+#endif
+}
+
+bool CPUFlagsHaveBeenComputed() {
+  // TODO Add CPU flags support
+  // Flags were computed above.
+  return true;
+}
+
+}  // namespace jit
+}  // namespace js