/*
- * Copyright (C) 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "MacroAssemblerX86Common.h"
+#if USE(MASM_PROBE)
+#include <wtf/StdLibExtras.h>
+#endif
+
namespace JSC {
class MacroAssemblerX86 : public MacroAssemblerX86Common {
public:
- MacroAssemblerX86()
- : m_isSSE2Present(isSSE2Present())
- {
- }
-
static const Scale ScalePtr = TimesFour;
using MacroAssemblerX86Common::add32;
using MacroAssemblerX86Common::and32;
+ using MacroAssemblerX86Common::branchAdd32;
+ using MacroAssemblerX86Common::branchSub32;
using MacroAssemblerX86Common::sub32;
using MacroAssemblerX86Common::or32;
using MacroAssemblerX86Common::load32;
+ using MacroAssemblerX86Common::load8;
using MacroAssemblerX86Common::store32;
+ using MacroAssemblerX86Common::store8;
using MacroAssemblerX86Common::branch32;
using MacroAssemblerX86Common::call;
+ using MacroAssemblerX86Common::jump;
+ using MacroAssemblerX86Common::addDouble;
using MacroAssemblerX86Common::loadDouble;
+ using MacroAssemblerX86Common::storeDouble;
using MacroAssemblerX86Common::convertInt32ToDouble;
+ using MacroAssemblerX86Common::branch8;
+ using MacroAssemblerX86Common::branchTest8;
- void add32(Imm32 imm, RegisterID src, RegisterID dest)
+ void add32(TrustedImm32 imm, RegisterID src, RegisterID dest)
{
m_assembler.leal_mr(imm.m_value, src, dest);
}
- void add32(Imm32 imm, AbsoluteAddress address)
+ void add32(TrustedImm32 imm, AbsoluteAddress address)
{
m_assembler.addl_im(imm.m_value, address.m_ptr);
}
- void addWithCarry32(Imm32 imm, AbsoluteAddress address)
+ void add32(AbsoluteAddress address, RegisterID dest)
{
- m_assembler.adcl_im(imm.m_value, address.m_ptr);
+ m_assembler.addl_mr(address.m_ptr, dest);
}
- void and32(Imm32 imm, AbsoluteAddress address)
+ void add64(TrustedImm32 imm, AbsoluteAddress address)
+ {
+ m_assembler.addl_im(imm.m_value, address.m_ptr);
+ m_assembler.adcl_im(imm.m_value >> 31, reinterpret_cast<const char*>(address.m_ptr) + sizeof(int32_t));
+ }
+
+ void and32(TrustedImm32 imm, AbsoluteAddress address)
{
m_assembler.andl_im(imm.m_value, address.m_ptr);
}
- void or32(Imm32 imm, AbsoluteAddress address)
+ void or32(TrustedImm32 imm, AbsoluteAddress address)
{
m_assembler.orl_im(imm.m_value, address.m_ptr);
}
-
- void sub32(Imm32 imm, AbsoluteAddress address)
+
+ void or32(RegisterID reg, AbsoluteAddress address)
+ {
+ m_assembler.orl_rm(reg, address.m_ptr);
+ }
+
+ void sub32(TrustedImm32 imm, AbsoluteAddress address)
{
m_assembler.subl_im(imm.m_value, address.m_ptr);
}
- void load32(void* address, RegisterID dest)
+ void load32(const void* address, RegisterID dest)
{
m_assembler.movl_mr(address, dest);
}
+
+ void load8(const void* address, RegisterID dest)
+ {
+ m_assembler.movzbl_mr(address, dest);
+ }
+
+ void abortWithReason(AbortReason reason)
+ {
+ move(TrustedImm32(reason), X86Registers::eax);
+ breakpoint();
+ }
+
+ void abortWithReason(AbortReason reason, intptr_t misc)
+ {
+ move(TrustedImm32(misc), X86Registers::edx);
+ abortWithReason(reason);
+ }
+
+ ConvertibleLoadLabel convertibleLoadPtr(Address address, RegisterID dest)
+ {
+ ConvertibleLoadLabel result = ConvertibleLoadLabel(this);
+ m_assembler.movl_mr(address.offset, address.base, dest);
+ return result;
+ }
- void loadDouble(const void* address, FPRegisterID dest)
+ void addDouble(AbsoluteAddress address, FPRegisterID dest)
+ {
+ m_assembler.addsd_mr(address.m_ptr, dest);
+ }
+
+ void storeDouble(FPRegisterID src, TrustedImmPtr address)
{
ASSERT(isSSE2Present());
- m_assembler.movsd_mr(address, dest);
+ ASSERT(address.m_value);
+ m_assembler.movsd_rm(src, address.m_value);
}
void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
m_assembler.cvtsi2sd_mr(src.m_ptr, dest);
}
- void store32(Imm32 imm, void* address)
+ void store32(TrustedImm32 imm, void* address)
{
m_assembler.movl_i32m(imm.m_value, address);
}
{
m_assembler.movl_rm(src, address);
}
+
+ void store8(RegisterID src, void* address)
+ {
+ m_assembler.movb_rm(src, address);
+ }
- Jump branch32(Condition cond, AbsoluteAddress left, RegisterID right)
+ void store8(TrustedImm32 imm, void* address)
+ {
+ ASSERT(-128 <= imm.m_value && imm.m_value < 128);
+ m_assembler.movb_i8m(imm.m_value, address);
+ }
+
+ // Possibly clobbers src.
+ // FIXME: Don't do that.
+ // https://bugs.webkit.org/show_bug.cgi?id=131690
+ void moveDoubleToInts(FPRegisterID src, RegisterID dest1, RegisterID dest2)
+ {
+ movePackedToInt32(src, dest1);
+ rshiftPacked(TrustedImm32(32), src);
+ movePackedToInt32(src, dest2);
+ }
+
+ void moveIntsToDouble(RegisterID src1, RegisterID src2, FPRegisterID dest, FPRegisterID scratch)
+ {
+ moveInt32ToPacked(src1, dest);
+ moveInt32ToPacked(src2, scratch);
+ lshiftPacked(TrustedImm32(32), scratch);
+ orPacked(scratch, dest);
+ }
+
+ Jump branchAdd32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
+ {
+ m_assembler.addl_im(imm.m_value, dest.m_ptr);
+ return Jump(m_assembler.jCC(x86Condition(cond)));
+ }
+
+ Jump branchSub32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
+ {
+ m_assembler.subl_im(imm.m_value, dest.m_ptr);
+ return Jump(m_assembler.jCC(x86Condition(cond)));
+ }
+
+ Jump branch32(RelationalCondition cond, AbsoluteAddress left, RegisterID right)
{
m_assembler.cmpl_rm(right, left.m_ptr);
return Jump(m_assembler.jCC(x86Condition(cond)));
}
- Jump branch32(Condition cond, AbsoluteAddress left, Imm32 right)
+ Jump branch32(RelationalCondition cond, AbsoluteAddress left, TrustedImm32 right)
{
m_assembler.cmpl_im(right.m_value, left.m_ptr);
return Jump(m_assembler.jCC(x86Condition(cond)));
return Call(m_assembler.call(), Call::Linkable);
}
+ // Address is a memory location containing the address to jump to
+ void jump(AbsoluteAddress address)
+ {
+ m_assembler.jmp_m(address.m_ptr);
+ }
+
Call tailRecursiveCall()
{
return Call::fromTailJump(jump());
}
- DataLabelPtr moveWithPatch(ImmPtr initialValue, RegisterID dest)
+ DataLabelPtr moveWithPatch(TrustedImmPtr initialValue, RegisterID dest)
{
+ padBeforePatch();
m_assembler.movl_i32r(initialValue.asIntptr(), dest);
return DataLabelPtr(this);
}
+
+ Jump branch8(RelationalCondition cond, AbsoluteAddress left, TrustedImm32 right)
+ {
+ m_assembler.cmpb_im(right.m_value, left.m_ptr);
+ return Jump(m_assembler.jCC(x86Condition(cond)));
+ }
- Jump branchPtrWithPatch(Condition cond, RegisterID left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
+ Jump branchTest8(ResultCondition cond, AbsoluteAddress address, TrustedImm32 mask = TrustedImm32(-1))
{
+ ASSERT(mask.m_value >= -128 && mask.m_value <= 255);
+ if (mask.m_value == -1)
+ m_assembler.cmpb_im(0, address.m_ptr);
+ else
+ m_assembler.testb_im(mask.m_value, address.m_ptr);
+ return Jump(m_assembler.jCC(x86Condition(cond)));
+ }
+
+ Jump branchPtrWithPatch(RelationalCondition cond, RegisterID left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
+ {
+ padBeforePatch();
m_assembler.cmpl_ir_force32(initialRightValue.asIntptr(), left);
dataLabel = DataLabelPtr(this);
return Jump(m_assembler.jCC(x86Condition(cond)));
}
- Jump branchPtrWithPatch(Condition cond, Address left, DataLabelPtr& dataLabel, ImmPtr initialRightValue = ImmPtr(0))
+ Jump branchPtrWithPatch(RelationalCondition cond, Address left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
{
+ padBeforePatch();
m_assembler.cmpl_im_force32(initialRightValue.asIntptr(), left.offset, left.base);
dataLabel = DataLabelPtr(this);
return Jump(m_assembler.jCC(x86Condition(cond)));
}
- DataLabelPtr storePtrWithPatch(ImmPtr initialValue, ImplicitAddress address)
+ Jump branch32WithPatch(RelationalCondition cond, Address left, DataLabel32& dataLabel, TrustedImm32 initialRightValue = TrustedImm32(0))
+ {
+ padBeforePatch();
+ m_assembler.cmpl_im_force32(initialRightValue.m_value, left.offset, left.base);
+ dataLabel = DataLabel32(this);
+ return Jump(m_assembler.jCC(x86Condition(cond)));
+ }
+
+ DataLabelPtr storePtrWithPatch(TrustedImmPtr initialValue, ImplicitAddress address)
{
+ padBeforePatch();
m_assembler.movl_i32m(initialValue.asIntptr(), address.offset, address.base);
return DataLabelPtr(this);
}
- Label loadPtrWithPatchToLEA(Address address, RegisterID dest)
+ static bool supportsFloatingPoint() { return isSSE2Present(); }
+ // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
+ static bool supportsFloatingPointTruncate() { return isSSE2Present(); }
+ static bool supportsFloatingPointSqrt() { return isSSE2Present(); }
+ static bool supportsFloatingPointAbs() { return isSSE2Present(); }
+
+ static FunctionPtr readCallTarget(CodeLocationCall call)
{
- Label label(this);
- load32(address, dest);
- return label;
+ intptr_t offset = reinterpret_cast<int32_t*>(call.dataLocation())[-1];
+ return FunctionPtr(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(call.dataLocation()) + offset));
}
- bool supportsFloatingPoint() const { return m_isSSE2Present; }
- // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
- bool supportsFloatingPointTruncate() const { return m_isSSE2Present; }
- bool supportsFloatingPointSqrt() const { return m_isSSE2Present; }
+ static bool canJumpReplacePatchableBranchPtrWithPatch() { return true; }
+ static bool canJumpReplacePatchableBranch32WithPatch() { return true; }
+
+ static CodeLocationLabel startOfBranchPtrWithPatchOnRegister(CodeLocationDataLabelPtr label)
+ {
+ const int opcodeBytes = 1;
+ const int modRMBytes = 1;
+ const int immediateBytes = 4;
+ const int totalBytes = opcodeBytes + modRMBytes + immediateBytes;
+ ASSERT(totalBytes >= maxJumpReplacementSize());
+ return label.labelAtOffset(-totalBytes);
+ }
+
+ static CodeLocationLabel startOfPatchableBranchPtrWithPatchOnAddress(CodeLocationDataLabelPtr label)
+ {
+ const int opcodeBytes = 1;
+ const int modRMBytes = 1;
+ const int offsetBytes = 0;
+ const int immediateBytes = 4;
+ const int totalBytes = opcodeBytes + modRMBytes + offsetBytes + immediateBytes;
+ ASSERT(totalBytes >= maxJumpReplacementSize());
+ return label.labelAtOffset(-totalBytes);
+ }
+
+ static CodeLocationLabel startOfPatchableBranch32WithPatchOnAddress(CodeLocationDataLabel32 label)
+ {
+ const int opcodeBytes = 1;
+ const int modRMBytes = 1;
+ const int offsetBytes = 0;
+ const int immediateBytes = 4;
+ const int totalBytes = opcodeBytes + modRMBytes + offsetBytes + immediateBytes;
+ ASSERT(totalBytes >= maxJumpReplacementSize());
+ return label.labelAtOffset(-totalBytes);
+ }
+
+ static void revertJumpReplacementToBranchPtrWithPatch(CodeLocationLabel instructionStart, RegisterID reg, void* initialValue)
+ {
+ X86Assembler::revertJumpTo_cmpl_ir_force32(instructionStart.executableAddress(), reinterpret_cast<intptr_t>(initialValue), reg);
+ }
-private:
- const bool m_isSSE2Present;
+ static void revertJumpReplacementToPatchableBranchPtrWithPatch(CodeLocationLabel instructionStart, Address address, void* initialValue)
+ {
+ ASSERT(!address.offset);
+ X86Assembler::revertJumpTo_cmpl_im_force32(instructionStart.executableAddress(), reinterpret_cast<intptr_t>(initialValue), 0, address.base);
+ }
+ static void revertJumpReplacementToPatchableBranch32WithPatch(CodeLocationLabel instructionStart, Address address, int32_t initialValue)
+ {
+ ASSERT(!address.offset);
+ X86Assembler::revertJumpTo_cmpl_im_force32(instructionStart.executableAddress(), initialValue, 0, address.base);
+ }
+
+#if USE(MASM_PROBE)
+ // For details about probe(), see comment in MacroAssemblerX86_64.h.
+ void probe(ProbeFunction, void* arg1 = 0, void* arg2 = 0);
+#endif // USE(MASM_PROBE)
+
+private:
friend class LinkBuffer;
friend class RepatchBuffer;
static void linkCall(void* code, Call call, FunctionPtr function)
{
- X86Assembler::linkCall(code, call.m_jmp, function.value());
+ X86Assembler::linkCall(code, call.m_label, function.value());
}
static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
{
X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
}
+
+#if USE(MASM_PROBE)
+ inline TrustedImm32 trustedImm32FromPtr(void* ptr)
+ {
+ return TrustedImm32(TrustedImmPtr(ptr));
+ }
+
+ inline TrustedImm32 trustedImm32FromPtr(ProbeFunction function)
+ {
+ return TrustedImm32(TrustedImmPtr(reinterpret_cast<void*>(function)));
+ }
+
+ inline TrustedImm32 trustedImm32FromPtr(void (*function)())
+ {
+ return TrustedImm32(TrustedImmPtr(reinterpret_cast<void*>(function)));
+ }
+#endif
};
+#if USE(MASM_PROBE)
+
+extern "C" void ctiMasmProbeTrampoline();
+
+// For details on "What code is emitted for the probe?" and "What values are in
+// the saved registers?", see comment for MacroAssemblerX86::probe() in
+// MacroAssemblerX86_64.h.
+
+inline void MacroAssemblerX86::probe(MacroAssemblerX86::ProbeFunction function, void* arg1, void* arg2)
+{
+ push(RegisterID::esp);
+ push(RegisterID::eax);
+ push(trustedImm32FromPtr(arg2));
+ push(trustedImm32FromPtr(arg1));
+ push(trustedImm32FromPtr(function));
+
+ move(trustedImm32FromPtr(ctiMasmProbeTrampoline), RegisterID::eax);
+ call(RegisterID::eax);
+}
+#endif // USE(MASM_PROBE)
+
} // namespace JSC
#endif // ENABLE(ASSEMBLER)
projects / apple / javascriptcore.git / blobdiff