1 files changed, 88 insertions, 0 deletions
diff --git a/js/src/jit/arm64/Architecture-arm64.cpp b/js/src/jit/arm64/Architecture-arm64.cpp
new file mode 100644
index 0000000000..872510c40d
--- /dev/null
+++ b/js/src/jit/arm64/Architecture-arm64.cpp
@@ -0,0 +1,88 @@
+/* -*- 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/arm64/Architecture-arm64.h"
+
+#include <cstring>
+
+#include "jit/arm64/vixl/Cpu-vixl.h"
+#include "jit/FlushICache.h"  // js::jit::FlushICache
+#include "jit/RegisterSets.h"
+
+namespace js {
+namespace jit {
+
+Registers::Code Registers::FromName(const char* name) {
+  // Check for some register aliases first.
+  if (strcmp(name, "ip0") == 0) {
+    return ip0;
+  }
+  if (strcmp(name, "ip1") == 0) {
+    return ip1;
+  }
+  if (strcmp(name, "fp") == 0) {
+    return fp;
+  }
+
+  for (uint32_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;
+}
+
+// These assume no SIMD registers as the register sets do not directly support
+// SIMD.  When SIMD is needed (wasm baseline + stubs), other routines are used.
+
+FloatRegisterSet FloatRegister::ReduceSetForPush(const FloatRegisterSet& s) {
+  LiveFloatRegisterSet ret;
+  for (FloatRegisterIterator iter(s); iter.more(); ++iter) {
+    ret.addUnchecked(FromCode((*iter).encoding()));
+  }
+  return ret.set();
+}
+
+uint32_t FloatRegister::GetPushSizeInBytes(const FloatRegisterSet& s) {
+  return s.size() * sizeof(double);
+}
+
+uint32_t FloatRegister::getRegisterDumpOffsetInBytes() {
+  // Although registers are 128-bits wide, only the first 64 need saving per
+  // ABI.
+  return encoding() * sizeof(double);
+}
+
+#if defined(ENABLE_WASM_SIMD)
+uint32_t FloatRegister::GetPushSizeInBytesForWasmStubs(
+    const FloatRegisterSet& s) {
+  return s.size() * SizeOfSimd128;
+}
+#endif
+
+uint32_t GetARM64Flags() { return 0; }
+
+void FlushICache(void* code, size_t size, bool codeIsThreadLocal) {
+  vixl::CPU::EnsureIAndDCacheCoherency(code, size, codeIsThreadLocal);
+}
+
+bool CanFlushICacheFromBackgroundThreads() {
+  return vixl::CPU::CanFlushICacheFromBackgroundThreads();
+}
+
+}  // namespace jit
+}  // namespace js