1 files changed, 94 insertions, 0 deletions
diff --git a/js/src/jit/mips32/Architecture-mips32.cpp b/js/src/jit/mips32/Architecture-mips32.cpp
new file mode 100644
index 0000000000..598551eafe
--- /dev/null
+++ b/js/src/jit/mips32/Architecture-mips32.cpp
@@ -0,0 +1,94 @@
+/* -*- 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/mips32/Architecture-mips32.h"
+
+#include "jit/RegisterSets.h"
+
+namespace js {
+namespace jit {
+
+const char* const Registers::RegNames[] = {
+    "zero", "at", "v0", "v1", "a0", "a1", "a2", "a3", "t0", "t1", "t2",
+    "t3",   "t4", "t5", "t6", "t7", "s0", "s1", "s2", "s3", "s4", "s5",
+    "s6",   "s7", "t8", "t9", "k0", "k1", "gp", "sp", "fp", "ra"};
+
+const uint32_t Allocatable = 14;
+
+const Registers::SetType Registers::ArgRegMask = Registers::SharedArgRegMask;
+
+const Registers::SetType Registers::JSCallMask =
+    (1 << Registers::a2) | (1 << Registers::a3);
+
+const Registers::SetType Registers::CallMask =
+    (1 << Registers::v0) |
+    (1 << Registers::v1);  // used for double-size returns
+
+FloatRegisters::Encoding FloatRegisters::FromName(const char* name) {
+  for (size_t i = 0; i < RegisterIdLimit; i++) {
+    if (strcmp(GetName(i), name) == 0) {
+      return Encoding(i);
+    }
+  }
+
+  return Invalid;
+}
+
+FloatRegister FloatRegister::doubleOverlay() const {
+  MOZ_ASSERT(isNotOdd());
+  if (isSingle()) {
+    return FloatRegister(code_, Double);
+  }
+  return *this;
+}
+
+FloatRegister FloatRegister::singleOverlay() const {
+  MOZ_ASSERT(isNotOdd());
+  if (isDouble()) {
+    return FloatRegister(code_, Single);
+  }
+  return *this;
+}
+
+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) {
+    // Even for single size registers save complete double register.
+    mod.addUnchecked((*iter).doubleOverlay());
+  }
+  return mod.set();
+}
+
+uint32_t FloatRegister::GetPushSizeInBytes(const FloatRegisterSet& s) {
+#ifdef ENABLE_WASM_SIMD
+#  error "Needs more careful logic if SIMD is enabled"
+#endif
+
+  FloatRegisterSet ss = s.reduceSetForPush();
+  uint64_t bits = ss.bits();
+  // We are only pushing double registers.
+  MOZ_ASSERT((bits & 0xFFFF) == 0);
+  uint32_t ret = mozilla::CountPopulation32(bits) * sizeof(double);
+
+  // Additional space needed by MacroAssembler::PushRegsInMask to ensure
+  // correct alignment of double values.
+  if (ret) {
+    ret += sizeof(double);
+  }
+
+  return ret;
+}
+uint32_t FloatRegister::getRegisterDumpOffsetInBytes() {
+  MOZ_ASSERT(isNotOdd());
+  return id() * sizeof(float);
+}
+
+}  // namespace jit
+}  // namespace js