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diff --git a/js/src/jit/x86/MacroAssembler-x86.cpp b/js/src/jit/x86/MacroAssembler-x86.cpp
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+++ b/js/src/jit/x86/MacroAssembler-x86.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/x86/MacroAssembler-x86.h"
+
+#include "mozilla/Alignment.h"
+#include "mozilla/Casting.h"
+
+#include "jit/AtomicOp.h"
+#include "jit/Bailouts.h"
+#include "jit/BaselineFrame.h"
+#include "jit/JitFrames.h"
+#include "jit/JitRuntime.h"
+#include "jit/MacroAssembler.h"
+#include "jit/MoveEmitter.h"
+#include "util/Memory.h"
+#include "vm/BigIntType.h"
+#include "vm/JitActivation.h" // js::jit::JitActivation
+#include "vm/JSContext.h"
+#include "vm/StringType.h"
+
+#include "jit/MacroAssembler-inl.h"
+#include "vm/JSScript-inl.h"
+
+using namespace js;
+using namespace js::jit;
+
+void MacroAssemblerX86::loadConstantDouble(double d, FloatRegister dest) {
+ if (maybeInlineDouble(d, dest)) {
+ return;
+ }
+ Double* dbl = getDouble(d);
+ if (!dbl) {
+ return;
+ }
+ masm.vmovsd_mr(nullptr, dest.encoding());
+ propagateOOM(dbl->uses.append(CodeOffset(masm.size())));
+}
+
+void MacroAssemblerX86::loadConstantFloat32(float f, FloatRegister dest) {
+ if (maybeInlineFloat(f, dest)) {
+ return;
+ }
+ Float* flt = getFloat(f);
+ if (!flt) {
+ return;
+ }
+ masm.vmovss_mr(nullptr, dest.encoding());
+ propagateOOM(flt->uses.append(CodeOffset(masm.size())));
+}
+
+void MacroAssemblerX86::loadConstantSimd128Int(const SimdConstant& v,
+ FloatRegister dest) {
+ if (maybeInlineSimd128Int(v, dest)) {
+ return;
+ }
+ SimdData* i4 = getSimdData(v);
+ if (!i4) {
+ return;
+ }
+ masm.vmovdqa_mr(nullptr, dest.encoding());
+ propagateOOM(i4->uses.append(CodeOffset(masm.size())));
+}
+
+void MacroAssemblerX86::loadConstantSimd128Float(const SimdConstant& v,
+ FloatRegister dest) {
+ if (maybeInlineSimd128Float(v, dest)) {
+ return;
+ }
+ SimdData* f4 = getSimdData(v);
+ if (!f4) {
+ return;
+ }
+ masm.vmovaps_mr(nullptr, dest.encoding());
+ propagateOOM(f4->uses.append(CodeOffset(masm.size())));
+}
+
+void MacroAssemblerX86::vpPatchOpSimd128(
+ const SimdConstant& v, FloatRegister src, FloatRegister dest,
+ void (X86Encoding::BaseAssemblerX86::*op)(
+ const void* address, X86Encoding::XMMRegisterID srcId,
+ X86Encoding::XMMRegisterID destId)) {
+ SimdData* val = getSimdData(v);
+ if (!val) {
+ return;
+ }
+ (masm.*op)(nullptr, src.encoding(), dest.encoding());
+ propagateOOM(val->uses.append(CodeOffset(masm.size())));
+}
+
+void MacroAssemblerX86::vpPatchOpSimd128(
+ const SimdConstant& v, FloatRegister src, FloatRegister dest,
+ size_t (X86Encoding::BaseAssemblerX86::*op)(
+ const void* address, X86Encoding::XMMRegisterID srcId,
+ X86Encoding::XMMRegisterID destId)) {
+ SimdData* val = getSimdData(v);
+ if (!val) {
+ return;
+ }
+ size_t patchOffsetFromEnd =
+ (masm.*op)(nullptr, src.encoding(), dest.encoding());
+ propagateOOM(val->uses.append(CodeOffset(masm.size() - patchOffsetFromEnd)));
+}
+
+void MacroAssemblerX86::vpaddbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddb_mr);
+}
+
+void MacroAssemblerX86::vpaddwSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddw_mr);
+}
+
+void MacroAssemblerX86::vpadddSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddd_mr);
+}
+
+void MacroAssemblerX86::vpaddqSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddq_mr);
+}
+
+void MacroAssemblerX86::vpsubbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubb_mr);
+}
+
+void MacroAssemblerX86::vpsubwSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubw_mr);
+}
+
+void MacroAssemblerX86::vpsubdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubd_mr);
+}
+
+void MacroAssemblerX86::vpsubqSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubq_mr);
+}
+
+void MacroAssemblerX86::vpmullwSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmullw_mr);
+}
+
+void MacroAssemblerX86::vpmulldSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmulld_mr);
+}
+
+void MacroAssemblerX86::vpaddsbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddsb_mr);
+}
+
+void MacroAssemblerX86::vpaddusbSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddusb_mr);
+}
+
+void MacroAssemblerX86::vpaddswSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddsw_mr);
+}
+
+void MacroAssemblerX86::vpadduswSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpaddusw_mr);
+}
+
+void MacroAssemblerX86::vpsubsbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubsb_mr);
+}
+
+void MacroAssemblerX86::vpsubusbSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubusb_mr);
+}
+
+void MacroAssemblerX86::vpsubswSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubsw_mr);
+}
+
+void MacroAssemblerX86::vpsubuswSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpsubusw_mr);
+}
+
+void MacroAssemblerX86::vpminsbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminsb_mr);
+}
+
+void MacroAssemblerX86::vpminubSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminub_mr);
+}
+
+void MacroAssemblerX86::vpminswSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminsw_mr);
+}
+
+void MacroAssemblerX86::vpminuwSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminuw_mr);
+}
+
+void MacroAssemblerX86::vpminsdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminsd_mr);
+}
+
+void MacroAssemblerX86::vpminudSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpminud_mr);
+}
+
+void MacroAssemblerX86::vpmaxsbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxsb_mr);
+}
+
+void MacroAssemblerX86::vpmaxubSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxub_mr);
+}
+
+void MacroAssemblerX86::vpmaxswSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxsw_mr);
+}
+
+void MacroAssemblerX86::vpmaxuwSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxuw_mr);
+}
+
+void MacroAssemblerX86::vpmaxsdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxsd_mr);
+}
+
+void MacroAssemblerX86::vpmaxudSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaxud_mr);
+}
+
+void MacroAssemblerX86::vpandSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpand_mr);
+}
+
+void MacroAssemblerX86::vpxorSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpxor_mr);
+}
+
+void MacroAssemblerX86::vporSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpor_mr);
+}
+
+void MacroAssemblerX86::vaddpsSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vaddps_mr);
+}
+
+void MacroAssemblerX86::vaddpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vaddpd_mr);
+}
+
+void MacroAssemblerX86::vsubpsSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vsubps_mr);
+}
+
+void MacroAssemblerX86::vsubpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vsubpd_mr);
+}
+
+void MacroAssemblerX86::vdivpsSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vdivps_mr);
+}
+
+void MacroAssemblerX86::vdivpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vdivpd_mr);
+}
+
+void MacroAssemblerX86::vmulpsSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vmulps_mr);
+}
+
+void MacroAssemblerX86::vmulpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vmulpd_mr);
+}
+
+void MacroAssemblerX86::vandpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vandpd_mr);
+}
+
+void MacroAssemblerX86::vminpdSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vminpd_mr);
+}
+
+void MacroAssemblerX86::vpacksswbSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpacksswb_mr);
+}
+
+void MacroAssemblerX86::vpackuswbSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpackuswb_mr);
+}
+
+void MacroAssemblerX86::vpackssdwSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpackssdw_mr);
+}
+
+void MacroAssemblerX86::vpackusdwSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpackusdw_mr);
+}
+
+void MacroAssemblerX86::vpunpckldqSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpunpckldq_mr);
+}
+
+void MacroAssemblerX86::vunpcklpsSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vunpcklps_mr);
+}
+
+void MacroAssemblerX86::vpshufbSimd128(const SimdConstant& v, FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpshufb_mr);
+}
+
+void MacroAssemblerX86::vptestSimd128(const SimdConstant& v,
+ FloatRegister lhs) {
+ vpPatchOpSimd128(v, lhs, &X86Encoding::BaseAssemblerX86::vptest_mr);
+}
+
+void MacroAssemblerX86::vpmaddwdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaddwd_mr);
+}
+
+void MacroAssemblerX86::vpcmpeqbSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpeqb_mr);
+}
+
+void MacroAssemblerX86::vpcmpgtbSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpgtb_mr);
+}
+
+void MacroAssemblerX86::vpcmpeqwSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpeqw_mr);
+}
+
+void MacroAssemblerX86::vpcmpgtwSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpgtw_mr);
+}
+
+void MacroAssemblerX86::vpcmpeqdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpeqd_mr);
+}
+
+void MacroAssemblerX86::vpcmpgtdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpcmpgtd_mr);
+}
+
+void MacroAssemblerX86::vcmpeqpsSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpeqps_mr);
+}
+
+void MacroAssemblerX86::vcmpneqpsSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpneqps_mr);
+}
+
+void MacroAssemblerX86::vcmpltpsSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpltps_mr);
+}
+
+void MacroAssemblerX86::vcmplepsSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpleps_mr);
+}
+
+void MacroAssemblerX86::vcmpgepsSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpgeps_mr);
+}
+
+void MacroAssemblerX86::vcmpeqpdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpeqpd_mr);
+}
+
+void MacroAssemblerX86::vcmpneqpdSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpneqpd_mr);
+}
+
+void MacroAssemblerX86::vcmpltpdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmpltpd_mr);
+}
+
+void MacroAssemblerX86::vcmplepdSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vcmplepd_mr);
+}
+
+void MacroAssemblerX86::vpmaddubswSimd128(const SimdConstant& v,
+ FloatRegister lhs,
+ FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmaddubsw_mr);
+}
+
+void MacroAssemblerX86::vpmuludqSimd128(const SimdConstant& v,
+ FloatRegister lhs, FloatRegister dest) {
+ vpPatchOpSimd128(v, lhs, dest, &X86Encoding::BaseAssemblerX86::vpmuludq_mr);
+}
+
+void MacroAssemblerX86::finish() {
+ // Last instruction may be an indirect jump so eagerly insert an undefined
+ // instruction byte to prevent processors from decoding data values into
+ // their pipelines. See Intel performance guides.
+ masm.ud2();
+
+ if (!doubles_.empty()) {
+ masm.haltingAlign(sizeof(double));
+ }
+ for (const Double& d : doubles_) {
+ CodeOffset cst(masm.currentOffset());
+ for (CodeOffset use : d.uses) {
+ addCodeLabel(CodeLabel(use, cst));
+ }
+ masm.doubleConstant(d.value);
+ if (!enoughMemory_) {
+ return;
+ }
+ }
+
+ if (!floats_.empty()) {
+ masm.haltingAlign(sizeof(float));
+ }
+ for (const Float& f : floats_) {
+ CodeOffset cst(masm.currentOffset());
+ for (CodeOffset use : f.uses) {
+ addCodeLabel(CodeLabel(use, cst));
+ }
+ masm.floatConstant(f.value);
+ if (!enoughMemory_) {
+ return;
+ }
+ }
+
+ // SIMD memory values must be suitably aligned.
+ if (!simds_.empty()) {
+ masm.haltingAlign(SimdMemoryAlignment);
+ }
+ for (const SimdData& v : simds_) {
+ CodeOffset cst(masm.currentOffset());
+ for (CodeOffset use : v.uses) {
+ addCodeLabel(CodeLabel(use, cst));
+ }
+ masm.simd128Constant(v.value.bytes());
+ if (!enoughMemory_) {
+ return;
+ }
+ }
+}
+
+void MacroAssemblerX86::handleFailureWithHandlerTail(Label* profilerExitTail,
+ Label* bailoutTail) {
+ // Reserve space for exception information.
+ subl(Imm32(sizeof(ResumeFromException)), esp);
+ movl(esp, eax);
+
+ // Call the handler.
+ using Fn = void (*)(ResumeFromException * rfe);
+ asMasm().setupUnalignedABICall(ecx);
+ asMasm().passABIArg(eax);
+ asMasm().callWithABI<Fn, HandleException>(
+ MoveOp::GENERAL, CheckUnsafeCallWithABI::DontCheckHasExitFrame);
+
+ Label entryFrame;
+ Label catch_;
+ Label finally;
+ Label returnBaseline;
+ Label returnIon;
+ Label bailout;
+ Label wasm;
+ Label wasmCatch;
+
+ loadPtr(Address(esp, ResumeFromException::offsetOfKind()), eax);
+ asMasm().branch32(Assembler::Equal, eax,
+ Imm32(ExceptionResumeKind::EntryFrame), &entryFrame);
+ asMasm().branch32(Assembler::Equal, eax, Imm32(ExceptionResumeKind::Catch),
+ &catch_);
+ asMasm().branch32(Assembler::Equal, eax, Imm32(ExceptionResumeKind::Finally),
+ &finally);
+ asMasm().branch32(Assembler::Equal, eax,
+ Imm32(ExceptionResumeKind::ForcedReturnBaseline),
+ &returnBaseline);
+ asMasm().branch32(Assembler::Equal, eax,
+ Imm32(ExceptionResumeKind::ForcedReturnIon), &returnIon);
+ asMasm().branch32(Assembler::Equal, eax, Imm32(ExceptionResumeKind::Bailout),
+ &bailout);
+ asMasm().branch32(Assembler::Equal, eax, Imm32(ExceptionResumeKind::Wasm),
+ &wasm);
+ asMasm().branch32(Assembler::Equal, eax,
+ Imm32(ExceptionResumeKind::WasmCatch), &wasmCatch);
+
+ breakpoint(); // Invalid kind.
+
+ // No exception handler. Load the error value, restore state and return from
+ // the entry frame.
+ bind(&entryFrame);
+ asMasm().moveValue(MagicValue(JS_ION_ERROR), JSReturnOperand);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ ret();
+
+ // If we found a catch handler, this must be a baseline frame. Restore state
+ // and jump to the catch block.
+ bind(&catch_);
+ loadPtr(Address(esp, ResumeFromException::offsetOfTarget()), eax);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ jmp(Operand(eax));
+
+ // If we found a finally block, this must be a baseline frame. Push two
+ // values expected by the finally block: the exception and BooleanValue(true).
+ bind(&finally);
+ ValueOperand exception = ValueOperand(ecx, edx);
+ loadValue(Address(esp, ResumeFromException::offsetOfException()), exception);
+
+ loadPtr(Address(esp, ResumeFromException::offsetOfTarget()), eax);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+
+ pushValue(exception);
+ pushValue(BooleanValue(true));
+ jmp(Operand(eax));
+
+ // Return BaselineFrame->returnValue() to the caller.
+ // Used in debug mode and for GeneratorReturn.
+ Label profilingInstrumentation;
+ bind(&returnBaseline);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ loadValue(Address(ebp, BaselineFrame::reverseOffsetOfReturnValue()),
+ JSReturnOperand);
+ jump(&profilingInstrumentation);
+
+ // Return the given value to the caller.
+ bind(&returnIon);
+ loadValue(Address(esp, ResumeFromException::offsetOfException()),
+ JSReturnOperand);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+
+ // If profiling is enabled, then update the lastProfilingFrame to refer to
+ // caller frame before returning. This code is shared by ForcedReturnIon
+ // and ForcedReturnBaseline.
+ bind(&profilingInstrumentation);
+ {
+ Label skipProfilingInstrumentation;
+ // Test if profiler enabled.
+ AbsoluteAddress addressOfEnabled(
+ asMasm().runtime()->geckoProfiler().addressOfEnabled());
+ asMasm().branch32(Assembler::Equal, addressOfEnabled, Imm32(0),
+ &skipProfilingInstrumentation);
+ jump(profilerExitTail);
+ bind(&skipProfilingInstrumentation);
+ }
+
+ movl(ebp, esp);
+ pop(ebp);
+ ret();
+
+ // If we are bailing out to baseline to handle an exception, jump to the
+ // bailout tail stub. Load 1 (true) in ReturnReg to indicate success.
+ bind(&bailout);
+ loadPtr(Address(esp, ResumeFromException::offsetOfBailoutInfo()), ecx);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ move32(Imm32(1), ReturnReg);
+ jump(bailoutTail);
+
+ // If we are throwing and the innermost frame was a wasm frame, reset SP and
+ // FP; SP is pointing to the unwound return address to the wasm entry, so
+ // we can just ret().
+ bind(&wasm);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ movePtr(ImmPtr((const void*)wasm::FailInstanceReg), InstanceReg);
+ masm.ret();
+
+ // Found a wasm catch handler, restore state and jump to it.
+ bind(&wasmCatch);
+ loadPtr(Address(esp, ResumeFromException::offsetOfTarget()), eax);
+ loadPtr(Address(esp, ResumeFromException::offsetOfFramePointer()), ebp);
+ loadPtr(Address(esp, ResumeFromException::offsetOfStackPointer()), esp);
+ jmp(Operand(eax));
+}
+
+void MacroAssemblerX86::profilerEnterFrame(Register framePtr,
+ Register scratch) {
+ asMasm().loadJSContext(scratch);
+ loadPtr(Address(scratch, offsetof(JSContext, profilingActivation_)), scratch);
+ storePtr(framePtr,
+ Address(scratch, JitActivation::offsetOfLastProfilingFrame()));
+ storePtr(ImmPtr(nullptr),
+ Address(scratch, JitActivation::offsetOfLastProfilingCallSite()));
+}
+
+void MacroAssemblerX86::profilerExitFrame() {
+ jump(asMasm().runtime()->jitRuntime()->getProfilerExitFrameTail());
+}
+
+Assembler::Condition MacroAssemblerX86::testStringTruthy(
+ bool truthy, const ValueOperand& value) {
+ Register string = value.payloadReg();
+ cmp32(Operand(string, JSString::offsetOfLength()), Imm32(0));
+ return truthy ? Assembler::NotEqual : Assembler::Equal;
+}
+
+Assembler::Condition MacroAssemblerX86::testBigIntTruthy(
+ bool truthy, const ValueOperand& value) {
+ Register bi = value.payloadReg();
+ cmp32(Operand(bi, JS::BigInt::offsetOfDigitLength()), Imm32(0));
+ return truthy ? Assembler::NotEqual : Assembler::Equal;
+}
+
+MacroAssembler& MacroAssemblerX86::asMasm() {
+ return *static_cast<MacroAssembler*>(this);
+}
+
+const MacroAssembler& MacroAssemblerX86::asMasm() const {
+ return *static_cast<const MacroAssembler*>(this);
+}
+
+void MacroAssembler::subFromStackPtr(Imm32 imm32) {
+ if (imm32.value) {
+ // On windows, we cannot skip very far down the stack without touching the
+ // memory pages in-between. This is a corner-case code for situations where
+ // the Ion frame data for a piece of code is very large. To handle this
+ // special case, for frames over 4k in size we allocate memory on the stack
+ // incrementally, touching it as we go.
+ //
+ // When the amount is quite large, which it can be, we emit an actual loop,
+ // in order to keep the function prologue compact. Compactness is a
+ // requirement for eg Wasm's CodeRange data structure, which can encode only
+ // 8-bit offsets.
+ uint32_t amountLeft = imm32.value;
+ uint32_t fullPages = amountLeft / 4096;
+ if (fullPages <= 8) {
+ while (amountLeft > 4096) {
+ subl(Imm32(4096), StackPointer);
+ store32(Imm32(0), Address(StackPointer, 0));
+ amountLeft -= 4096;
+ }
+ subl(Imm32(amountLeft), StackPointer);
+ } else {
+ // Save scratch register.
+ push(eax);
+ amountLeft -= 4;
+ fullPages = amountLeft / 4096;
+
+ Label top;
+ move32(Imm32(fullPages), eax);
+ bind(&top);
+ subl(Imm32(4096), StackPointer);
+ store32(Imm32(0), Address(StackPointer, 0));
+ subl(Imm32(1), eax);
+ j(Assembler::NonZero, &top);
+ amountLeft -= fullPages * 4096;
+ if (amountLeft) {
+ subl(Imm32(amountLeft), StackPointer);
+ }
+
+ // Restore scratch register.
+ movl(Operand(StackPointer, uint32_t(imm32.value) - 4), eax);
+ }
+ }
+}
+
+//{{{ check_macroassembler_style
+// ===============================================================
+// ABI function calls.
+
+void MacroAssembler::setupUnalignedABICall(Register scratch) {
+ setupNativeABICall();
+ dynamicAlignment_ = true;
+
+ movl(esp, scratch);
+ andl(Imm32(~(ABIStackAlignment - 1)), esp);
+ push(scratch);
+}
+
+void MacroAssembler::callWithABIPre(uint32_t* stackAdjust, bool callFromWasm) {
+ MOZ_ASSERT(inCall_);
+ uint32_t stackForCall = abiArgs_.stackBytesConsumedSoFar();
+
+ if (dynamicAlignment_) {
+ // sizeof(intptr_t) accounts for the saved stack pointer pushed by
+ // setupUnalignedABICall.
+ stackForCall += ComputeByteAlignment(stackForCall + sizeof(intptr_t),
+ ABIStackAlignment);
+ } else {
+ uint32_t alignmentAtPrologue = callFromWasm ? sizeof(wasm::Frame) : 0;
+ stackForCall += ComputeByteAlignment(
+ stackForCall + framePushed() + alignmentAtPrologue, ABIStackAlignment);
+ }
+
+ *stackAdjust = stackForCall;
+ reserveStack(stackForCall);
+
+ // Position all arguments.
+ {
+ enoughMemory_ &= moveResolver_.resolve();
+ if (!enoughMemory_) {
+ return;
+ }
+
+ MoveEmitter emitter(*this);
+ emitter.emit(moveResolver_);
+ emitter.finish();
+ }
+
+ assertStackAlignment(ABIStackAlignment);
+}
+
+void MacroAssembler::callWithABIPost(uint32_t stackAdjust, MoveOp::Type result,
+ bool callFromWasm) {
+ freeStack(stackAdjust);
+
+ // Calls to native functions in wasm pass through a thunk which already
+ // fixes up the return value for us.
+ if (!callFromWasm) {
+ if (result == MoveOp::DOUBLE) {
+ reserveStack(sizeof(double));
+ fstp(Operand(esp, 0));
+ loadDouble(Operand(esp, 0), ReturnDoubleReg);
+ freeStack(sizeof(double));
+ } else if (result == MoveOp::FLOAT32) {
+ reserveStack(sizeof(float));
+ fstp32(Operand(esp, 0));
+ loadFloat32(Operand(esp, 0), ReturnFloat32Reg);
+ freeStack(sizeof(float));
+ }
+ }
+
+ if (dynamicAlignment_) {
+ pop(esp);
+ }
+
+#ifdef DEBUG
+ MOZ_ASSERT(inCall_);
+ inCall_ = false;
+#endif
+}
+
+void MacroAssembler::callWithABINoProfiler(Register fun, MoveOp::Type result) {
+ uint32_t stackAdjust;
+ callWithABIPre(&stackAdjust);
+ call(fun);
+ callWithABIPost(stackAdjust, result);
+}
+
+void MacroAssembler::callWithABINoProfiler(const Address& fun,
+ MoveOp::Type result) {
+ uint32_t stackAdjust;
+ callWithABIPre(&stackAdjust);
+ call(fun);
+ callWithABIPost(stackAdjust, result);
+}
+
+// ===============================================================
+// Move instructions
+
+void MacroAssembler::moveValue(const TypedOrValueRegister& src,
+ const ValueOperand& dest) {
+ if (src.hasValue()) {
+ moveValue(src.valueReg(), dest);
+ return;
+ }
+
+ MIRType type = src.type();
+ AnyRegister reg = src.typedReg();
+
+ if (!IsFloatingPointType(type)) {
+ if (reg.gpr() != dest.payloadReg()) {
+ movl(reg.gpr(), dest.payloadReg());
+ }
+ mov(ImmWord(MIRTypeToTag(type)), dest.typeReg());
+ return;
+ }
+
+ ScratchDoubleScope scratch(*this);
+ FloatRegister freg = reg.fpu();
+ if (type == MIRType::Float32) {
+ convertFloat32ToDouble(freg, scratch);
+ freg = scratch;
+ }
+ boxDouble(freg, dest, scratch);
+}
+
+void MacroAssembler::moveValue(const ValueOperand& src,
+ const ValueOperand& dest) {
+ Register s0 = src.typeReg();
+ Register s1 = src.payloadReg();
+ Register d0 = dest.typeReg();
+ Register d1 = dest.payloadReg();
+
+ // Either one or both of the source registers could be the same as a
+ // destination register.
+ if (s1 == d0) {
+ if (s0 == d1) {
+ // If both are, this is just a swap of two registers.
+ xchgl(d0, d1);
+ return;
+ }
+ // If only one is, copy that source first.
+ std::swap(s0, s1);
+ std::swap(d0, d1);
+ }
+
+ if (s0 != d0) {
+ movl(s0, d0);
+ }
+ if (s1 != d1) {
+ movl(s1, d1);
+ }
+}
+
+void MacroAssembler::moveValue(const Value& src, const ValueOperand& dest) {
+ movl(Imm32(src.toNunboxTag()), dest.typeReg());
+ if (src.isGCThing()) {
+ movl(ImmGCPtr(src.toGCThing()), dest.payloadReg());
+ } else {
+ movl(Imm32(src.toNunboxPayload()), dest.payloadReg());
+ }
+}
+
+// ===============================================================
+// Branch functions
+
+void MacroAssembler::loadStoreBuffer(Register ptr, Register buffer) {
+ if (ptr != buffer) {
+ movePtr(ptr, buffer);
+ }
+ andPtr(Imm32(~gc::ChunkMask), buffer);
+ loadPtr(Address(buffer, gc::ChunkStoreBufferOffset), buffer);
+}
+
+void MacroAssembler::branchPtrInNurseryChunk(Condition cond, Register ptr,
+ Register temp, Label* label) {
+ MOZ_ASSERT(temp != InvalidReg); // A temp register is required for x86.
+ MOZ_ASSERT(ptr != temp);
+ movePtr(ptr, temp);
+ branchPtrInNurseryChunkImpl(cond, temp, label);
+}
+
+void MacroAssembler::branchPtrInNurseryChunk(Condition cond,
+ const Address& address,
+ Register temp, Label* label) {
+ MOZ_ASSERT(temp != InvalidReg); // A temp register is required for x86.
+ loadPtr(address, temp);
+ branchPtrInNurseryChunkImpl(cond, temp, label);
+}
+
+void MacroAssembler::branchPtrInNurseryChunkImpl(Condition cond, Register ptr,
+ Label* label) {
+ MOZ_ASSERT(cond == Assembler::Equal || cond == Assembler::NotEqual);
+
+ andPtr(Imm32(~gc::ChunkMask), ptr);
+ branchPtr(InvertCondition(cond), Address(ptr, gc::ChunkStoreBufferOffset),
+ ImmWord(0), label);
+}
+
+void MacroAssembler::branchValueIsNurseryCell(Condition cond,
+ const Address& address,
+ Register temp, Label* label) {
+ MOZ_ASSERT(cond == Assembler::Equal || cond == Assembler::NotEqual);
+
+ Label done;
+
+ branchTestGCThing(Assembler::NotEqual, address,
+ cond == Assembler::Equal ? &done : label);
+ branchPtrInNurseryChunk(cond, ToPayload(address), temp, label);
+
+ bind(&done);
+}
+
+void MacroAssembler::branchValueIsNurseryCell(Condition cond,
+ ValueOperand value, Register temp,
+ Label* label) {
+ MOZ_ASSERT(cond == Assembler::Equal || cond == Assembler::NotEqual);
+
+ Label done;
+
+ branchTestGCThing(Assembler::NotEqual, value,
+ cond == Assembler::Equal ? &done : label);
+ branchPtrInNurseryChunk(cond, value.payloadReg(), temp, label);
+
+ bind(&done);
+}
+
+void MacroAssembler::branchTestValue(Condition cond, const ValueOperand& lhs,
+ const Value& rhs, Label* label) {
+ MOZ_ASSERT(cond == Equal || cond == NotEqual);
+ if (rhs.isGCThing()) {
+ cmpPtr(lhs.payloadReg(), ImmGCPtr(rhs.toGCThing()));
+ } else {
+ cmpPtr(lhs.payloadReg(), ImmWord(rhs.toNunboxPayload()));
+ }
+
+ if (cond == Equal) {
+ Label done;
+ j(NotEqual, &done);
+ {
+ cmp32(lhs.typeReg(), Imm32(rhs.toNunboxTag()));
+ j(Equal, label);
+ }
+ bind(&done);
+ } else {
+ j(NotEqual, label);
+
+ cmp32(lhs.typeReg(), Imm32(rhs.toNunboxTag()));
+ j(NotEqual, label);
+ }
+}
+
+// ========================================================================
+// Memory access primitives.
+template <typename T>
+void MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value,
+ MIRType valueType, const T& dest) {
+ MOZ_ASSERT(valueType < MIRType::Value);
+
+ if (valueType == MIRType::Double) {
+ storeDouble(value.reg().typedReg().fpu(), dest);
+ return;
+ }
+
+ // Store the type tag.
+ storeTypeTag(ImmType(ValueTypeFromMIRType(valueType)), Operand(dest));
+
+ // Store the payload.
+ if (value.constant()) {
+ storePayload(value.value(), Operand(dest));
+ } else {
+ storePayload(value.reg().typedReg().gpr(), Operand(dest));
+ }
+}
+
+template void MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value,
+ MIRType valueType,
+ const Address& dest);
+template void MacroAssembler::storeUnboxedValue(
+ const ConstantOrRegister& value, MIRType valueType,
+ const BaseObjectElementIndex& dest);
+
+// wasm specific methods, used in both the wasm baseline compiler and ion.
+
+void MacroAssembler::wasmLoad(const wasm::MemoryAccessDesc& access,
+ Operand srcAddr, AnyRegister out) {
+ MOZ_ASSERT(srcAddr.kind() == Operand::MEM_REG_DISP ||
+ srcAddr.kind() == Operand::MEM_SCALE);
+
+ MOZ_ASSERT_IF(
+ access.isZeroExtendSimd128Load(),
+ access.type() == Scalar::Float32 || access.type() == Scalar::Float64);
+ MOZ_ASSERT_IF(
+ access.isSplatSimd128Load(),
+ access.type() == Scalar::Uint8 || access.type() == Scalar::Uint16 ||
+ access.type() == Scalar::Float32 || access.type() == Scalar::Float64);
+ MOZ_ASSERT_IF(access.isWidenSimd128Load(), access.type() == Scalar::Float64);
+
+ // NOTE: the generated code must match the assembly code in gen_load in
+ // GenerateAtomicOperations.py
+ memoryBarrierBefore(access.sync());
+
+ append(access, size());
+ switch (access.type()) {
+ case Scalar::Int8:
+ movsbl(srcAddr, out.gpr());
+ break;
+ case Scalar::Uint8:
+ if (access.isSplatSimd128Load()) {
+ vbroadcastb(srcAddr, out.fpu());
+ } else {
+ movzbl(srcAddr, out.gpr());
+ }
+ break;
+ case Scalar::Int16:
+ movswl(srcAddr, out.gpr());
+ break;
+ case Scalar::Uint16:
+ if (access.isSplatSimd128Load()) {
+ vbroadcastw(srcAddr, out.fpu());
+ } else {
+ movzwl(srcAddr, out.gpr());
+ }
+ break;
+ case Scalar::Int32:
+ case Scalar::Uint32:
+ movl(srcAddr, out.gpr());
+ break;
+ case Scalar::Float32:
+ if (access.isSplatSimd128Load()) {
+ vbroadcastss(srcAddr, out.fpu());
+ } else {
+ // vmovss does the right thing also for access.isZeroExtendSimd128Load()
+ vmovss(srcAddr, out.fpu());
+ }
+ break;
+ case Scalar::Float64:
+ if (access.isSplatSimd128Load()) {
+ vmovddup(srcAddr, out.fpu());
+ } else if (access.isWidenSimd128Load()) {
+ switch (access.widenSimdOp()) {
+ case wasm::SimdOp::V128Load8x8S:
+ vpmovsxbw(srcAddr, out.fpu());
+ break;
+ case wasm::SimdOp::V128Load8x8U:
+ vpmovzxbw(srcAddr, out.fpu());
+ break;
+ case wasm::SimdOp::V128Load16x4S:
+ vpmovsxwd(srcAddr, out.fpu());
+ break;
+ case wasm::SimdOp::V128Load16x4U:
+ vpmovzxwd(srcAddr, out.fpu());
+ break;
+ case wasm::SimdOp::V128Load32x2S:
+ vpmovsxdq(srcAddr, out.fpu());
+ break;
+ case wasm::SimdOp::V128Load32x2U:
+ vpmovzxdq(srcAddr, out.fpu());
+ break;
+ default:
+ MOZ_CRASH("Unexpected widening op for wasmLoad");
+ }
+ } else {
+ // vmovsd does the right thing also for access.isZeroExtendSimd128Load()
+ vmovsd(srcAddr, out.fpu());
+ }
+ break;
+ case Scalar::Simd128:
+ vmovups(srcAddr, out.fpu());
+ break;
+ case Scalar::Int64:
+ case Scalar::Uint8Clamped:
+ case Scalar::BigInt64:
+ case Scalar::BigUint64:
+ case Scalar::MaxTypedArrayViewType:
+ MOZ_CRASH("unexpected type");
+ }
+
+ memoryBarrierAfter(access.sync());
+}
+
+void MacroAssembler::wasmLoadI64(const wasm::MemoryAccessDesc& access,
+ Operand srcAddr, Register64 out) {
+ // Atomic i64 load must use lock_cmpxchg8b.
+ MOZ_ASSERT_IF(access.isAtomic(), access.byteSize() <= 4);
+ MOZ_ASSERT(srcAddr.kind() == Operand::MEM_REG_DISP ||
+ srcAddr.kind() == Operand::MEM_SCALE);
+ MOZ_ASSERT(!access.isZeroExtendSimd128Load()); // Use wasmLoad()
+ MOZ_ASSERT(!access.isSplatSimd128Load()); // Use wasmLoad()
+ MOZ_ASSERT(!access.isWidenSimd128Load()); // Use wasmLoad()
+
+ memoryBarrierBefore(access.sync());
+
+ append(access, size());
+ switch (access.type()) {
+ case Scalar::Int8:
+ MOZ_ASSERT(out == Register64(edx, eax));
+ movsbl(srcAddr, out.low);
+
+ cdq();
+ break;
+ case Scalar::Uint8:
+ movzbl(srcAddr, out.low);
+
+ xorl(out.high, out.high);
+ break;
+ case Scalar::Int16:
+ MOZ_ASSERT(out == Register64(edx, eax));
+ movswl(srcAddr, out.low);
+
+ cdq();
+ break;
+ case Scalar::Uint16:
+ movzwl(srcAddr, out.low);
+
+ xorl(out.high, out.high);
+ break;
+ case Scalar::Int32:
+ MOZ_ASSERT(out == Register64(edx, eax));
+ movl(srcAddr, out.low);
+
+ cdq();
+ break;
+ case Scalar::Uint32:
+ movl(srcAddr, out.low);
+
+ xorl(out.high, out.high);
+ break;
+ case Scalar::Int64: {
+ if (srcAddr.kind() == Operand::MEM_SCALE) {
+ MOZ_RELEASE_ASSERT(srcAddr.toBaseIndex().base != out.low &&
+ srcAddr.toBaseIndex().index != out.low);
+ }
+ if (srcAddr.kind() == Operand::MEM_REG_DISP) {
+ MOZ_RELEASE_ASSERT(srcAddr.toAddress().base != out.low);
+ }
+
+ movl(LowWord(srcAddr), out.low);
+
+ append(access, size());
+ movl(HighWord(srcAddr), out.high);
+
+ break;
+ }
+ case Scalar::Float32:
+ case Scalar::Float64:
+ MOZ_CRASH("non-int64 loads should use load()");
+ case Scalar::Simd128:
+ case Scalar::Uint8Clamped:
+ case Scalar::BigInt64:
+ case Scalar::BigUint64:
+ case Scalar::MaxTypedArrayViewType:
+ MOZ_CRASH("unexpected array type");
+ }
+
+ memoryBarrierAfter(access.sync());
+}
+
+void MacroAssembler::wasmStore(const wasm::MemoryAccessDesc& access,
+ AnyRegister value, Operand dstAddr) {
+ MOZ_ASSERT(dstAddr.kind() == Operand::MEM_REG_DISP ||
+ dstAddr.kind() == Operand::MEM_SCALE);
+
+ // NOTE: the generated code must match the assembly code in gen_store in
+ // GenerateAtomicOperations.py
+ memoryBarrierBefore(access.sync());
+
+ append(access, size());
+ switch (access.type()) {
+ case Scalar::Int8:
+ case Scalar::Uint8Clamped:
+ case Scalar::Uint8:
+ movb(value.gpr(), dstAddr);
+ break;
+ case Scalar::Int16:
+ case Scalar::Uint16:
+ movw(value.gpr(), dstAddr);
+ break;
+ case Scalar::Int32:
+ case Scalar::Uint32:
+ movl(value.gpr(), dstAddr);
+ break;
+ case Scalar::Float32:
+ vmovss(value.fpu(), dstAddr);
+ break;
+ case Scalar::Float64:
+ vmovsd(value.fpu(), dstAddr);
+ break;
+ case Scalar::Simd128:
+ vmovups(value.fpu(), dstAddr);
+ break;
+ case Scalar::Int64:
+ MOZ_CRASH("Should be handled in storeI64.");
+ case Scalar::MaxTypedArrayViewType:
+ case Scalar::BigInt64:
+ case Scalar::BigUint64:
+ MOZ_CRASH("unexpected type");
+ }
+
+ memoryBarrierAfter(access.sync());
+}
+
+void MacroAssembler::wasmStoreI64(const wasm::MemoryAccessDesc& access,
+ Register64 value, Operand dstAddr) {
+ // Atomic i64 store must use lock_cmpxchg8b.
+ MOZ_ASSERT(!access.isAtomic());
+ MOZ_ASSERT(dstAddr.kind() == Operand::MEM_REG_DISP ||
+ dstAddr.kind() == Operand::MEM_SCALE);
+
+ // Store the high word first so as to hit guard-page-based OOB checks without
+ // writing partial data.
+ append(access, size());
+ movl(value.high, HighWord(dstAddr));
+
+ append(access, size());
+ movl(value.low, LowWord(dstAddr));
+}
+
+template <typename T>
+static void AtomicLoad64(MacroAssembler& masm,
+ const wasm::MemoryAccessDesc* access, const T& address,
+ Register64 temp, Register64 output) {
+ MOZ_ASSERT(temp.low == ebx);
+ MOZ_ASSERT(temp.high == ecx);
+ MOZ_ASSERT(output.high == edx);
+ MOZ_ASSERT(output.low == eax);
+
+ // In the event edx:eax matches what's in memory, ecx:ebx will be
+ // stored. The two pairs must therefore have the same values.
+ masm.movl(edx, ecx);
+ masm.movl(eax, ebx);
+
+ if (access) {
+ masm.append(*access, masm.size());
+ }
+ masm.lock_cmpxchg8b(edx, eax, ecx, ebx, Operand(address));
+}
+
+void MacroAssembler::wasmAtomicLoad64(const wasm::MemoryAccessDesc& access,
+ const Address& mem, Register64 temp,
+ Register64 output) {
+ AtomicLoad64(*this, &access, mem, temp, output);
+}
+
+void MacroAssembler::wasmAtomicLoad64(const wasm::MemoryAccessDesc& access,
+ const BaseIndex& mem, Register64 temp,
+ Register64 output) {
+ AtomicLoad64(*this, &access, mem, temp, output);
+}
+
+template <typename T>
+static void CompareExchange64(MacroAssembler& masm,
+ const wasm::MemoryAccessDesc* access,
+ const T& mem, Register64 expected,
+ Register64 replacement, Register64 output) {
+ MOZ_ASSERT(expected == output);
+ MOZ_ASSERT(expected.high == edx);
+ MOZ_ASSERT(expected.low == eax);
+ MOZ_ASSERT(replacement.high == ecx);
+ MOZ_ASSERT(replacement.low == ebx);
+
+ // NOTE: the generated code must match the assembly code in gen_cmpxchg in
+ // GenerateAtomicOperations.py
+ if (access) {
+ masm.append(*access, masm.size());
+ }
+ masm.lock_cmpxchg8b(edx, eax, ecx, ebx, Operand(mem));
+}
+
+void MacroAssembler::wasmCompareExchange64(const wasm::MemoryAccessDesc& access,
+ const Address& mem,
+ Register64 expected,
+ Register64 replacement,
+ Register64 output) {
+ CompareExchange64(*this, &access, mem, expected, replacement, output);
+}
+
+void MacroAssembler::wasmCompareExchange64(const wasm::MemoryAccessDesc& access,
+ const BaseIndex& mem,
+ Register64 expected,
+ Register64 replacement,
+ Register64 output) {
+ CompareExchange64(*this, &access, mem, expected, replacement, output);
+}
+
+template <typename T>
+static void AtomicExchange64(MacroAssembler& masm,
+ const wasm::MemoryAccessDesc* access, const T& mem,
+ Register64 value, Register64 output) {
+ MOZ_ASSERT(value.low == ebx);
+ MOZ_ASSERT(value.high == ecx);
+ MOZ_ASSERT(output.high == edx);
+ MOZ_ASSERT(output.low == eax);
+
+ // edx:eax has garbage initially, and that is the best we can do unless
+ // we can guess with high probability what's in memory.
+
+ MOZ_ASSERT(mem.base != edx && mem.base != eax);
+ if constexpr (std::is_same_v<T, BaseIndex>) {
+ MOZ_ASSERT(mem.index != edx && mem.index != eax);
+ } else {
+ static_assert(std::is_same_v<T, Address>);
+ }
+
+ Label again;
+ masm.bind(&again);
+ if (access) {
+ masm.append(*access, masm.size());
+ }
+ masm.lock_cmpxchg8b(edx, eax, ecx, ebx, Operand(mem));
+ masm.j(MacroAssembler::NonZero, &again);
+}
+
+void MacroAssembler::wasmAtomicExchange64(const wasm::MemoryAccessDesc& access,
+ const Address& mem, Register64 value,
+ Register64 output) {
+ AtomicExchange64(*this, &access, mem, value, output);
+}
+
+void MacroAssembler::wasmAtomicExchange64(const wasm::MemoryAccessDesc& access,
+ const BaseIndex& mem,
+ Register64 value, Register64 output) {
+ AtomicExchange64(*this, &access, mem, value, output);
+}
+
+template <typename T>
+static void AtomicFetchOp64(MacroAssembler& masm,
+ const wasm::MemoryAccessDesc* access, AtomicOp op,
+ const Address& value, const T& mem, Register64 temp,
+ Register64 output) {
+ // We don't have enough registers for all the operands on x86, so the rhs
+ // operand is in memory.
+
+#define ATOMIC_OP_BODY(OPERATE) \
+ do { \
+ MOZ_ASSERT(output.low == eax); \
+ MOZ_ASSERT(output.high == edx); \
+ MOZ_ASSERT(temp.low == ebx); \
+ MOZ_ASSERT(temp.high == ecx); \
+ if (access) { \
+ masm.append(*access, masm.size()); \
+ } \
+ masm.load64(mem, output); \
+ Label again; \
+ masm.bind(&again); \
+ masm.move64(output, temp); \
+ masm.OPERATE(Operand(value), temp); \
+ masm.lock_cmpxchg8b(edx, eax, ecx, ebx, Operand(mem)); \
+ masm.j(MacroAssembler::NonZero, &again); \
+ } while (0)
+
+ switch (op) {
+ case AtomicFetchAddOp:
+ ATOMIC_OP_BODY(add64FromMemory);
+ break;
+ case AtomicFetchSubOp:
+ ATOMIC_OP_BODY(sub64FromMemory);
+ break;
+ case AtomicFetchAndOp:
+ ATOMIC_OP_BODY(and64FromMemory);
+ break;
+ case AtomicFetchOrOp:
+ ATOMIC_OP_BODY(or64FromMemory);
+ break;
+ case AtomicFetchXorOp:
+ ATOMIC_OP_BODY(xor64FromMemory);
+ break;
+ default:
+ MOZ_CRASH();
+ }
+
+#undef ATOMIC_OP_BODY
+}
+
+void MacroAssembler::wasmAtomicFetchOp64(const wasm::MemoryAccessDesc& access,
+ AtomicOp op, const Address& value,
+ const Address& mem, Register64 temp,
+ Register64 output) {
+ AtomicFetchOp64(*this, &access, op, value, mem, temp, output);
+}
+
+void MacroAssembler::wasmAtomicFetchOp64(const wasm::MemoryAccessDesc& access,
+ AtomicOp op, const Address& value,
+ const BaseIndex& mem, Register64 temp,
+ Register64 output) {
+ AtomicFetchOp64(*this, &access, op, value, mem, temp, output);
+}
+
+void MacroAssembler::wasmTruncateDoubleToUInt32(FloatRegister input,
+ Register output,
+ bool isSaturating,
+ Label* oolEntry) {
+ Label done;
+ vcvttsd2si(input, output);
+ branch32(Assembler::Condition::NotSigned, output, Imm32(0), &done);
+
+ ScratchDoubleScope fpscratch(*this);
+ loadConstantDouble(double(int32_t(0x80000000)), fpscratch);
+ addDouble(input, fpscratch);
+ vcvttsd2si(fpscratch, output);
+
+ branch32(Assembler::Condition::Signed, output, Imm32(0), oolEntry);
+ or32(Imm32(0x80000000), output);
+
+ bind(&done);
+}
+
+void MacroAssembler::wasmTruncateFloat32ToUInt32(FloatRegister input,
+ Register output,
+ bool isSaturating,
+ Label* oolEntry) {
+ Label done;
+ vcvttss2si(input, output);
+ branch32(Assembler::Condition::NotSigned, output, Imm32(0), &done);
+
+ ScratchFloat32Scope fpscratch(*this);
+ loadConstantFloat32(float(int32_t(0x80000000)), fpscratch);
+ addFloat32(input, fpscratch);
+ vcvttss2si(fpscratch, output);
+
+ branch32(Assembler::Condition::Signed, output, Imm32(0), oolEntry);
+ or32(Imm32(0x80000000), output);
+
+ bind(&done);
+}
+
+void MacroAssembler::wasmTruncateDoubleToInt64(
+ FloatRegister input, Register64 output, bool isSaturating, Label* oolEntry,
+ Label* oolRejoin, FloatRegister tempReg) {
+ Label ok;
+ Register temp = output.high;
+
+ reserveStack(2 * sizeof(int32_t));
+ storeDouble(input, Operand(esp, 0));
+
+ truncateDoubleToInt64(Address(esp, 0), Address(esp, 0), temp);
+ load64(Address(esp, 0), output);
+
+ cmpl(Imm32(0), Operand(esp, 0));
+ j(Assembler::NotEqual, &ok);
+
+ cmpl(Imm32(1), Operand(esp, 4));
+ j(Assembler::Overflow, oolEntry);
+
+ bind(&ok);
+ bind(oolRejoin);
+
+ freeStack(2 * sizeof(int32_t));
+}
+
+void MacroAssembler::wasmTruncateFloat32ToInt64(
+ FloatRegister input, Register64 output, bool isSaturating, Label* oolEntry,
+ Label* oolRejoin, FloatRegister tempReg) {
+ Label ok;
+ Register temp = output.high;
+
+ reserveStack(2 * sizeof(int32_t));
+ storeFloat32(input, Operand(esp, 0));
+
+ truncateFloat32ToInt64(Address(esp, 0), Address(esp, 0), temp);
+ load64(Address(esp, 0), output);
+
+ cmpl(Imm32(0), Operand(esp, 0));
+ j(Assembler::NotEqual, &ok);
+
+ cmpl(Imm32(1), Operand(esp, 4));
+ j(Assembler::Overflow, oolEntry);
+
+ bind(&ok);
+ bind(oolRejoin);
+
+ freeStack(2 * sizeof(int32_t));
+}
+
+void MacroAssembler::wasmTruncateDoubleToUInt64(
+ FloatRegister input, Register64 output, bool isSaturating, Label* oolEntry,
+ Label* oolRejoin, FloatRegister tempReg) {
+ Label fail, convert;
+ Register temp = output.high;
+
+ // Make sure input fits in uint64.
+ reserveStack(2 * sizeof(int32_t));
+ storeDouble(input, Operand(esp, 0));
+ branchDoubleNotInUInt64Range(Address(esp, 0), temp, &fail);
+ size_t stackBeforeBranch = framePushed();
+ jump(&convert);
+
+ bind(&fail);
+ freeStack(2 * sizeof(int32_t));
+ jump(oolEntry);
+ if (isSaturating) {
+ // The OOL path computes the right values.
+ setFramePushed(stackBeforeBranch);
+ } else {
+ // The OOL path just checks the input values.
+ bind(oolRejoin);
+ reserveStack(2 * sizeof(int32_t));
+ storeDouble(input, Operand(esp, 0));
+ }
+
+ // Convert the double/float to uint64.
+ bind(&convert);
+ truncateDoubleToUInt64(Address(esp, 0), Address(esp, 0), temp, tempReg);
+
+ // Load value into int64 register.
+ load64(Address(esp, 0), output);
+ freeStack(2 * sizeof(int32_t));
+
+ if (isSaturating) {
+ bind(oolRejoin);
+ }
+}
+
+void MacroAssembler::wasmTruncateFloat32ToUInt64(
+ FloatRegister input, Register64 output, bool isSaturating, Label* oolEntry,
+ Label* oolRejoin, FloatRegister tempReg) {
+ Label fail, convert;
+ Register temp = output.high;
+
+ // Make sure input fits in uint64.
+ reserveStack(2 * sizeof(int32_t));
+ storeFloat32(input, Operand(esp, 0));
+ branchFloat32NotInUInt64Range(Address(esp, 0), temp, &fail);
+ size_t stackBeforeBranch = framePushed();
+ jump(&convert);
+
+ bind(&fail);
+ freeStack(2 * sizeof(int32_t));
+ jump(oolEntry);
+ if (isSaturating) {
+ // The OOL path computes the right values.
+ setFramePushed(stackBeforeBranch);
+ } else {
+ // The OOL path just checks the input values.
+ bind(oolRejoin);
+ reserveStack(2 * sizeof(int32_t));
+ storeFloat32(input, Operand(esp, 0));
+ }
+
+ // Convert the float to uint64.
+ bind(&convert);
+ truncateFloat32ToUInt64(Address(esp, 0), Address(esp, 0), temp, tempReg);
+
+ // Load value into int64 register.
+ load64(Address(esp, 0), output);
+ freeStack(2 * sizeof(int32_t));
+
+ if (isSaturating) {
+ bind(oolRejoin);
+ }
+}
+
+// ========================================================================
+// Primitive atomic operations.
+
+void MacroAssembler::atomicLoad64(const Synchronization&, const Address& mem,
+ Register64 temp, Register64 output) {
+ AtomicLoad64(*this, nullptr, mem, temp, output);
+}
+
+void MacroAssembler::atomicLoad64(const Synchronization&, const BaseIndex& mem,
+ Register64 temp, Register64 output) {
+ AtomicLoad64(*this, nullptr, mem, temp, output);
+}
+
+void MacroAssembler::atomicStore64(const Synchronization&, const Address& mem,
+ Register64 value, Register64 temp) {
+ AtomicExchange64(*this, nullptr, mem, value, temp);
+}
+
+void MacroAssembler::atomicStore64(const Synchronization&, const BaseIndex& mem,
+ Register64 value, Register64 temp) {
+ AtomicExchange64(*this, nullptr, mem, value, temp);
+}
+
+void MacroAssembler::compareExchange64(const Synchronization&,
+ const Address& mem, Register64 expected,
+ Register64 replacement,
+ Register64 output) {
+ CompareExchange64(*this, nullptr, mem, expected, replacement, output);
+}
+
+void MacroAssembler::compareExchange64(const Synchronization&,
+ const BaseIndex& mem,
+ Register64 expected,
+ Register64 replacement,
+ Register64 output) {
+ CompareExchange64(*this, nullptr, mem, expected, replacement, output);
+}
+
+void MacroAssembler::atomicExchange64(const Synchronization&,
+ const Address& mem, Register64 value,
+ Register64 output) {
+ AtomicExchange64(*this, nullptr, mem, value, output);
+}
+
+void MacroAssembler::atomicExchange64(const Synchronization&,
+ const BaseIndex& mem, Register64 value,
+ Register64 output) {
+ AtomicExchange64(*this, nullptr, mem, value, output);
+}
+
+void MacroAssembler::atomicFetchOp64(const Synchronization&, AtomicOp op,
+ const Address& value, const Address& mem,
+ Register64 temp, Register64 output) {
+ AtomicFetchOp64(*this, nullptr, op, value, mem, temp, output);
+}
+
+void MacroAssembler::atomicFetchOp64(const Synchronization&, AtomicOp op,
+ const Address& value, const BaseIndex& mem,
+ Register64 temp, Register64 output) {
+ AtomicFetchOp64(*this, nullptr, op, value, mem, temp, output);
+}
+
+// ========================================================================
+// Convert floating point.
+
+bool MacroAssembler::convertUInt64ToDoubleNeedsTemp() { return HasSSE3(); }
+
+void MacroAssembler::convertUInt64ToDouble(Register64 src, FloatRegister dest,
+ Register temp) {
+ // SUBPD needs SSE2, HADDPD needs SSE3.
+ if (!HasSSE3()) {
+ MOZ_ASSERT(temp == Register::Invalid());
+
+ // Zero the dest register to break dependencies, see convertInt32ToDouble.
+ zeroDouble(dest);
+
+ Push(src.high);
+ Push(src.low);
+ fild(Operand(esp, 0));
+
+ Label notNegative;
+ branch32(Assembler::NotSigned, src.high, Imm32(0), &notNegative);
+ double add_constant = 18446744073709551616.0; // 2^64
+ store64(Imm64(mozilla::BitwiseCast<uint64_t>(add_constant)),
+ Address(esp, 0));
+ fld(Operand(esp, 0));
+ faddp();
+ bind(&notNegative);
+
+ fstp(Operand(esp, 0));
+ vmovsd(Address(esp, 0), dest);
+ freeStack(2 * sizeof(intptr_t));
+ return;
+ }
+
+ // Following operation uses entire 128-bit of dest XMM register.
+ // Currently higher 64-bit is free when we have access to lower 64-bit.
+ MOZ_ASSERT(dest.size() == 8);
+ FloatRegister dest128 =
+ FloatRegister(dest.encoding(), FloatRegisters::Simd128);
+
+ // Assume that src is represented as following:
+ // src = 0x HHHHHHHH LLLLLLLL
+
+ {
+ // Move src to dest (=dest128) and ScratchInt32x4Reg (=scratch):
+ // dest = 0x 00000000 00000000 00000000 LLLLLLLL
+ // scratch = 0x 00000000 00000000 00000000 HHHHHHHH
+ ScratchSimd128Scope scratch(*this);
+ vmovd(src.low, dest128);
+ vmovd(src.high, scratch);
+
+ // Unpack and interleave dest and scratch to dest:
+ // dest = 0x 00000000 00000000 HHHHHHHH LLLLLLLL
+ vpunpckldq(scratch, dest128, dest128);
+ }
+
+ // Unpack and interleave dest and a constant C1 to dest:
+ // C1 = 0x 00000000 00000000 45300000 43300000
+ // dest = 0x 45300000 HHHHHHHH 43300000 LLLLLLLL
+ // here, each 64-bit part of dest represents following double:
+ // HI(dest) = 0x 1.00000HHHHHHHH * 2**84 == 2**84 + 0x HHHHHHHH 00000000
+ // LO(dest) = 0x 1.00000LLLLLLLL * 2**52 == 2**52 + 0x 00000000 LLLLLLLL
+ // See convertUInt64ToDouble for the details.
+ static const int32_t CST1[4] = {
+ 0x43300000,
+ 0x45300000,
+ 0x0,
+ 0x0,
+ };
+
+ vpunpckldqSimd128(SimdConstant::CreateX4(CST1), dest128, dest128);
+
+ // Subtract a constant C2 from dest, for each 64-bit part:
+ // C2 = 0x 45300000 00000000 43300000 00000000
+ // here, each 64-bit part of C2 represents following double:
+ // HI(C2) = 0x 1.0000000000000 * 2**84 == 2**84
+ // LO(C2) = 0x 1.0000000000000 * 2**52 == 2**52
+ // after the operation each 64-bit part of dest represents following:
+ // HI(dest) = double(0x HHHHHHHH 00000000)
+ // LO(dest) = double(0x 00000000 LLLLLLLL)
+ static const int32_t CST2[4] = {
+ 0x0,
+ 0x43300000,
+ 0x0,
+ 0x45300000,
+ };
+
+ vsubpdSimd128(SimdConstant::CreateX4(CST2), dest128, dest128);
+
+ // Add HI(dest) and LO(dest) in double and store it into LO(dest),
+ // LO(dest) = double(0x HHHHHHHH 00000000) + double(0x 00000000 LLLLLLLL)
+ // = double(0x HHHHHHHH LLLLLLLL)
+ // = double(src)
+ vhaddpd(dest128, dest128);
+}
+
+void MacroAssembler::convertInt64ToDouble(Register64 input,
+ FloatRegister output) {
+ // Zero the output register to break dependencies, see convertInt32ToDouble.
+ zeroDouble(output);
+
+ Push(input.high);
+ Push(input.low);
+ fild(Operand(esp, 0));
+
+ fstp(Operand(esp, 0));
+ vmovsd(Address(esp, 0), output);
+ freeStack(2 * sizeof(intptr_t));
+}
+
+void MacroAssembler::convertUInt64ToFloat32(Register64 input,
+ FloatRegister output,
+ Register temp) {
+ // Zero the dest register to break dependencies, see convertInt32ToDouble.
+ zeroDouble(output);
+
+ // Set the FPU precision to 80 bits.
+ reserveStack(2 * sizeof(intptr_t));
+ fnstcw(Operand(esp, 0));
+ load32(Operand(esp, 0), temp);
+ orl(Imm32(0x300), temp);
+ store32(temp, Operand(esp, sizeof(intptr_t)));
+ fldcw(Operand(esp, sizeof(intptr_t)));
+
+ Push(input.high);
+ Push(input.low);
+ fild(Operand(esp, 0));
+
+ Label notNegative;
+ branch32(Assembler::NotSigned, input.high, Imm32(0), &notNegative);
+ double add_constant = 18446744073709551616.0; // 2^64
+ uint64_t add_constant_u64 = mozilla::BitwiseCast<uint64_t>(add_constant);
+ store64(Imm64(add_constant_u64), Address(esp, 0));
+
+ fld(Operand(esp, 0));
+ faddp();
+ bind(&notNegative);
+
+ fstp32(Operand(esp, 0));
+ vmovss(Address(esp, 0), output);
+ freeStack(2 * sizeof(intptr_t));
+
+ // Restore FPU precision to the initial value.
+ fldcw(Operand(esp, 0));
+ freeStack(2 * sizeof(intptr_t));
+}
+
+void MacroAssembler::convertInt64ToFloat32(Register64 input,
+ FloatRegister output) {
+ // Zero the output register to break dependencies, see convertInt32ToDouble.
+ zeroDouble(output);
+
+ Push(input.high);
+ Push(input.low);
+ fild(Operand(esp, 0));
+
+ fstp32(Operand(esp, 0));
+ vmovss(Address(esp, 0), output);
+ freeStack(2 * sizeof(intptr_t));
+}
+
+void MacroAssembler::convertIntPtrToDouble(Register src, FloatRegister dest) {
+ convertInt32ToDouble(src, dest);
+}
+
+void MacroAssembler::PushBoxed(FloatRegister reg) { Push(reg); }
+
+CodeOffset MacroAssembler::moveNearAddressWithPatch(Register dest) {
+ return movWithPatch(ImmPtr(nullptr), dest);
+}
+
+void MacroAssembler::patchNearAddressMove(CodeLocationLabel loc,
+ CodeLocationLabel target) {
+ PatchDataWithValueCheck(loc, ImmPtr(target.raw()), ImmPtr(nullptr));
+}
+
+void MacroAssembler::wasmBoundsCheck64(Condition cond, Register64 index,
+ Register64 boundsCheckLimit, Label* ok) {
+ Label notOk;
+ cmp32(index.high, Imm32(0));
+ j(Assembler::NonZero, &notOk);
+ wasmBoundsCheck32(cond, index.low, boundsCheckLimit.low, ok);
+ bind(&notOk);
+}
+
+void MacroAssembler::wasmBoundsCheck64(Condition cond, Register64 index,
+ Address boundsCheckLimit, Label* ok) {
+ Label notOk;
+ cmp32(index.high, Imm32(0));
+ j(Assembler::NonZero, &notOk);
+ wasmBoundsCheck32(cond, index.low, boundsCheckLimit, ok);
+ bind(&notOk);
+}
+
+//}}} check_macroassembler_style
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 23:14:20 +0000