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-rw-r--r--js/src/jit/mips32/Architecture-mips32.cpp94
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
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+/* -*- 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