// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "v8.h"
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/v8.h"
#if V8_TARGET_ARCH_IA32
-#include "bootstrapper.h"
-#include "codegen.h"
-#include "cpu-profiler.h"
-#include "debug.h"
-#include "isolate-inl.h"
-#include "runtime.h"
-#include "serialize.h"
+#include "src/bootstrapper.h"
+#include "src/codegen.h"
+#include "src/cpu-profiler.h"
+#include "src/debug.h"
+#include "src/isolate-inl.h"
+#include "src/runtime.h"
+#include "src/serialize.h"
namespace v8 {
namespace internal {
void MacroAssembler::Load(Register dst, const Operand& src, Representation r) {
- ASSERT(!r.IsDouble());
+ DCHECK(!r.IsDouble());
if (r.IsInteger8()) {
movsx_b(dst, src);
} else if (r.IsUInteger8()) {
void MacroAssembler::Store(Register src, const Operand& dst, Representation r) {
- ASSERT(!r.IsDouble());
+ DCHECK(!r.IsDouble());
if (r.IsInteger8() || r.IsUInteger8()) {
mov_b(dst, src);
} else if (r.IsInteger16() || r.IsUInteger16()) {
mov_w(dst, src);
} else {
+ if (r.IsHeapObject()) {
+ AssertNotSmi(src);
+ } else if (r.IsSmi()) {
+ AssertSmi(src);
+ }
mov(dst, src);
}
}
void MacroAssembler::StoreRoot(Register source,
Register scratch,
Heap::RootListIndex index) {
- ASSERT(Heap::RootCanBeWrittenAfterInitialization(index));
+ DCHECK(Heap::RootCanBeWrittenAfterInitialization(index));
ExternalReference roots_array_start =
ExternalReference::roots_array_start(isolate());
mov(scratch, Immediate(index));
void MacroAssembler::CompareRoot(Register with, Heap::RootListIndex index) {
- ASSERT(isolate()->heap()->RootCanBeTreatedAsConstant(index));
+ DCHECK(isolate()->heap()->RootCanBeTreatedAsConstant(index));
Handle<Object> value(&isolate()->heap()->roots_array_start()[index]);
cmp(with, value);
}
void MacroAssembler::CompareRoot(const Operand& with,
Heap::RootListIndex index) {
- ASSERT(isolate()->heap()->RootCanBeTreatedAsConstant(index));
+ DCHECK(isolate()->heap()->RootCanBeTreatedAsConstant(index));
Handle<Object> value(&isolate()->heap()->roots_array_start()[index]);
cmp(with, value);
}
Condition cc,
Label* condition_met,
Label::Distance condition_met_distance) {
- ASSERT(cc == equal || cc == not_equal);
+ DCHECK(cc == equal || cc == not_equal);
if (scratch.is(object)) {
and_(scratch, Immediate(~Page::kPageAlignmentMask));
} else {
and_(scratch, object);
}
// Check that we can use a test_b.
- ASSERT(MemoryChunk::IN_FROM_SPACE < 8);
- ASSERT(MemoryChunk::IN_TO_SPACE < 8);
+ DCHECK(MemoryChunk::IN_FROM_SPACE < 8);
+ DCHECK(MemoryChunk::IN_TO_SPACE < 8);
int mask = (1 << MemoryChunk::IN_FROM_SPACE)
| (1 << MemoryChunk::IN_TO_SPACE);
// If non-zero, the page belongs to new-space.
ret(0);
bind(&buffer_overflowed);
} else {
- ASSERT(and_then == kFallThroughAtEnd);
+ DCHECK(and_then == kFallThroughAtEnd);
j(equal, &done, Label::kNear);
}
StoreBufferOverflowStub store_buffer_overflow =
- StoreBufferOverflowStub(save_fp);
+ StoreBufferOverflowStub(isolate(), save_fp);
CallStub(&store_buffer_overflow);
if (and_then == kReturnAtEnd) {
ret(0);
} else {
- ASSERT(and_then == kFallThroughAtEnd);
+ DCHECK(and_then == kFallThroughAtEnd);
bind(&done);
}
}
Register result_reg) {
Label done;
Label conv_failure;
- pxor(scratch_reg, scratch_reg);
+ xorps(scratch_reg, scratch_reg);
cvtsd2si(result_reg, input_reg);
test(result_reg, Immediate(0xFFFFFF00));
j(zero, &done, Label::kNear);
- cmp(result_reg, Immediate(0x80000000));
- j(equal, &conv_failure, Label::kNear);
+ cmp(result_reg, Immediate(0x1));
+ j(overflow, &conv_failure, Label::kNear);
mov(result_reg, Immediate(0));
- setcc(above, result_reg);
+ setcc(sign, result_reg);
sub(result_reg, Immediate(1));
and_(result_reg, Immediate(255));
jmp(&done, Label::kNear);
bind(&conv_failure);
- Set(result_reg, Immediate(0));
+ Move(result_reg, Immediate(0));
ucomisd(input_reg, scratch_reg);
j(below, &done, Label::kNear);
- Set(result_reg, Immediate(255));
+ Move(result_reg, Immediate(255));
bind(&done);
}
void MacroAssembler::SlowTruncateToI(Register result_reg,
Register input_reg,
int offset) {
- DoubleToIStub stub(input_reg, result_reg, offset, true);
- call(stub.GetCode(isolate()), RelocInfo::CODE_TARGET);
+ DoubleToIStub stub(isolate(), input_reg, result_reg, offset, true);
+ call(stub.GetCode(), RelocInfo::CODE_TARGET);
}
XMMRegister input_reg) {
Label done;
cvttsd2si(result_reg, Operand(input_reg));
- cmp(result_reg, 0x80000000u);
- j(not_equal, &done, Label::kNear);
+ cmp(result_reg, 0x1);
+ j(no_overflow, &done, Label::kNear);
sub(esp, Immediate(kDoubleSize));
movsd(MemOperand(esp, 0), input_reg);
}
-void MacroAssembler::TruncateX87TOSToI(Register result_reg) {
- sub(esp, Immediate(kDoubleSize));
- fst_d(MemOperand(esp, 0));
- SlowTruncateToI(result_reg, esp, 0);
- add(esp, Immediate(kDoubleSize));
-}
-
-
-void MacroAssembler::X87TOSToI(Register result_reg,
- MinusZeroMode minus_zero_mode,
- Label* conversion_failed,
- Label::Distance dst) {
- Label done;
- sub(esp, Immediate(kPointerSize));
- fld(0);
- fist_s(MemOperand(esp, 0));
- fild_s(MemOperand(esp, 0));
- pop(result_reg);
- FCmp();
- j(not_equal, conversion_failed, dst);
- j(parity_even, conversion_failed, dst);
- if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
- test(result_reg, Operand(result_reg));
- j(not_zero, &done, Label::kNear);
- // To check for minus zero, we load the value again as float, and check
- // if that is still 0.
- sub(esp, Immediate(kPointerSize));
- fst_s(MemOperand(esp, 0));
- pop(result_reg);
- test(result_reg, Operand(result_reg));
- j(not_zero, conversion_failed, dst);
- }
- bind(&done);
-}
-
-
void MacroAssembler::DoubleToI(Register result_reg,
XMMRegister input_reg,
XMMRegister scratch,
MinusZeroMode minus_zero_mode,
Label* conversion_failed,
Label::Distance dst) {
- ASSERT(!input_reg.is(scratch));
+ DCHECK(!input_reg.is(scratch));
cvttsd2si(result_reg, Operand(input_reg));
Cvtsi2sd(scratch, Operand(result_reg));
ucomisd(scratch, input_reg);
fstp(0);
SlowTruncateToI(result_reg, input_reg);
}
- } else if (CpuFeatures::IsSupported(SSE2)) {
- CpuFeatureScope scope(this, SSE2);
+ } else {
movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
cvttsd2si(result_reg, Operand(xmm0));
- cmp(result_reg, 0x80000000u);
- j(not_equal, &done, Label::kNear);
+ cmp(result_reg, 0x1);
+ j(no_overflow, &done, Label::kNear);
// Check if the input was 0x8000000 (kMinInt).
// If no, then we got an overflow and we deoptimize.
ExternalReference min_int = ExternalReference::address_of_min_int();
} else {
SlowTruncateToI(result_reg, input_reg);
}
- } else {
- SlowTruncateToI(result_reg, input_reg);
}
bind(&done);
}
MinusZeroMode minus_zero_mode,
Label* lost_precision) {
Label done;
- ASSERT(!temp.is(xmm0));
+ DCHECK(!temp.is(xmm0));
cmp(FieldOperand(input_reg, HeapObject::kMapOffset),
isolate()->factory()->heap_number_map());
j(not_equal, lost_precision, Label::kNear);
- if (CpuFeatures::IsSafeForSnapshot(SSE2)) {
- ASSERT(!temp.is(no_xmm_reg));
- CpuFeatureScope scope(this, SSE2);
+ DCHECK(!temp.is(no_xmm_reg));
- movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
- cvttsd2si(result_reg, Operand(xmm0));
- Cvtsi2sd(temp, Operand(result_reg));
- ucomisd(xmm0, temp);
- RecordComment("Deferred TaggedToI: lost precision");
- j(not_equal, lost_precision, Label::kNear);
- RecordComment("Deferred TaggedToI: NaN");
- j(parity_even, lost_precision, Label::kNear);
- if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
- test(result_reg, Operand(result_reg));
- j(not_zero, &done, Label::kNear);
- movmskpd(result_reg, xmm0);
- and_(result_reg, 1);
- RecordComment("Deferred TaggedToI: minus zero");
- j(not_zero, lost_precision, Label::kNear);
- }
- } else {
- // TODO(olivf) Converting a number on the fpu is actually quite slow. We
- // should first try a fast conversion and then bailout to this slow case.
- Label lost_precision_pop, zero_check;
- Label* lost_precision_int = (minus_zero_mode == FAIL_ON_MINUS_ZERO)
- ? &lost_precision_pop : lost_precision;
- sub(esp, Immediate(kPointerSize));
- fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset));
- if (minus_zero_mode == FAIL_ON_MINUS_ZERO) fld(0);
- fist_s(MemOperand(esp, 0));
- fild_s(MemOperand(esp, 0));
- FCmp();
- pop(result_reg);
- j(not_equal, lost_precision_int, Label::kNear);
- j(parity_even, lost_precision_int, Label::kNear); // NaN.
- if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
- test(result_reg, Operand(result_reg));
- j(zero, &zero_check, Label::kNear);
- fstp(0);
- jmp(&done, Label::kNear);
- bind(&zero_check);
- // To check for minus zero, we load the value again as float, and check
- // if that is still 0.
- sub(esp, Immediate(kPointerSize));
- fstp_s(Operand(esp, 0));
- pop(result_reg);
- test(result_reg, Operand(result_reg));
- j(zero, &done, Label::kNear);
- jmp(lost_precision, Label::kNear);
-
- bind(&lost_precision_pop);
- fstp(0);
- jmp(lost_precision, Label::kNear);
- }
+ movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset));
+ cvttsd2si(result_reg, Operand(xmm0));
+ Cvtsi2sd(temp, Operand(result_reg));
+ ucomisd(xmm0, temp);
+ RecordComment("Deferred TaggedToI: lost precision");
+ j(not_equal, lost_precision, Label::kNear);
+ RecordComment("Deferred TaggedToI: NaN");
+ j(parity_even, lost_precision, Label::kNear);
+ if (minus_zero_mode == FAIL_ON_MINUS_ZERO) {
+ test(result_reg, Operand(result_reg));
+ j(not_zero, &done, Label::kNear);
+ movmskpd(result_reg, xmm0);
+ and_(result_reg, 1);
+ RecordComment("Deferred TaggedToI: minus zero");
+ j(not_zero, lost_precision, Label::kNear);
}
bind(&done);
}
void MacroAssembler::LoadUint32(XMMRegister dst,
- Register src,
- XMMRegister scratch) {
+ Register src) {
Label done;
cmp(src, Immediate(0));
ExternalReference uint32_bias =
ExternalReference::address_of_uint32_bias();
- movsd(scratch, Operand::StaticVariable(uint32_bias));
Cvtsi2sd(dst, src);
j(not_sign, &done, Label::kNear);
- addsd(dst, scratch);
+ addsd(dst, Operand::StaticVariable(uint32_bias));
bind(&done);
}
-void MacroAssembler::LoadUint32NoSSE2(Register src) {
- Label done;
- push(src);
- fild_s(Operand(esp, 0));
- cmp(src, Immediate(0));
- j(not_sign, &done, Label::kNear);
- ExternalReference uint32_bias =
- ExternalReference::address_of_uint32_bias();
- fld_d(Operand::StaticVariable(uint32_bias));
- faddp(1);
- bind(&done);
- add(esp, Immediate(kPointerSize));
-}
-
-
-void MacroAssembler::RecordWriteArray(Register object,
- Register value,
- Register index,
- SaveFPRegsMode save_fp,
- RememberedSetAction remembered_set_action,
- SmiCheck smi_check) {
+void MacroAssembler::RecordWriteArray(
+ Register object,
+ Register value,
+ Register index,
+ SaveFPRegsMode save_fp,
+ RememberedSetAction remembered_set_action,
+ SmiCheck smi_check,
+ PointersToHereCheck pointers_to_here_check_for_value) {
// First, check if a write barrier is even needed. The tests below
// catch stores of Smis.
Label done;
// Skip barrier if writing a smi.
if (smi_check == INLINE_SMI_CHECK) {
- ASSERT_EQ(0, kSmiTag);
+ DCHECK_EQ(0, kSmiTag);
test(value, Immediate(kSmiTagMask));
j(zero, &done);
}
lea(dst, Operand(object, index, times_half_pointer_size,
FixedArray::kHeaderSize - kHeapObjectTag));
- RecordWrite(
- object, dst, value, save_fp, remembered_set_action, OMIT_SMI_CHECK);
+ RecordWrite(object, dst, value, save_fp, remembered_set_action,
+ OMIT_SMI_CHECK, pointers_to_here_check_for_value);
bind(&done);
Register dst,
SaveFPRegsMode save_fp,
RememberedSetAction remembered_set_action,
- SmiCheck smi_check) {
+ SmiCheck smi_check,
+ PointersToHereCheck pointers_to_here_check_for_value) {
// First, check if a write barrier is even needed. The tests below
// catch stores of Smis.
Label done;
// Although the object register is tagged, the offset is relative to the start
// of the object, so so offset must be a multiple of kPointerSize.
- ASSERT(IsAligned(offset, kPointerSize));
+ DCHECK(IsAligned(offset, kPointerSize));
lea(dst, FieldOperand(object, offset));
if (emit_debug_code()) {
bind(&ok);
}
- RecordWrite(
- object, dst, value, save_fp, remembered_set_action, OMIT_SMI_CHECK);
+ RecordWrite(object, dst, value, save_fp, remembered_set_action,
+ OMIT_SMI_CHECK, pointers_to_here_check_for_value);
bind(&done);
bind(&ok);
}
- ASSERT(!object.is(value));
- ASSERT(!object.is(address));
- ASSERT(!value.is(address));
+ DCHECK(!object.is(value));
+ DCHECK(!object.is(address));
+ DCHECK(!value.is(address));
AssertNotSmi(object);
if (!FLAG_incremental_marking) {
return;
}
- // Count number of write barriers in generated code.
- isolate()->counters()->write_barriers_static()->Increment();
- IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1);
+ // Compute the address.
+ lea(address, FieldOperand(object, HeapObject::kMapOffset));
// A single check of the map's pages interesting flag suffices, since it is
// only set during incremental collection, and then it's also guaranteed that
// the from object's page's interesting flag is also set. This optimization
// relies on the fact that maps can never be in new space.
- ASSERT(!isolate()->heap()->InNewSpace(*map));
+ DCHECK(!isolate()->heap()->InNewSpace(*map));
CheckPageFlagForMap(map,
MemoryChunk::kPointersToHereAreInterestingMask,
zero,
&done,
Label::kNear);
- // Delay the initialization of |address| and |value| for the stub until it's
- // known that the will be needed. Up until this point their values are not
- // needed since they are embedded in the operands of instructions that need
- // them.
- lea(address, FieldOperand(object, HeapObject::kMapOffset));
- mov(value, Immediate(map));
- RecordWriteStub stub(object, value, address, OMIT_REMEMBERED_SET, save_fp);
+ RecordWriteStub stub(isolate(), object, value, address, OMIT_REMEMBERED_SET,
+ save_fp);
CallStub(&stub);
bind(&done);
+ // Count number of write barriers in generated code.
+ isolate()->counters()->write_barriers_static()->Increment();
+ IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1);
+
// Clobber clobbered input registers when running with the debug-code flag
// turned on to provoke errors.
if (emit_debug_code()) {
}
-void MacroAssembler::RecordWrite(Register object,
- Register address,
- Register value,
- SaveFPRegsMode fp_mode,
- RememberedSetAction remembered_set_action,
- SmiCheck smi_check) {
- ASSERT(!object.is(value));
- ASSERT(!object.is(address));
- ASSERT(!value.is(address));
+void MacroAssembler::RecordWrite(
+ Register object,
+ Register address,
+ Register value,
+ SaveFPRegsMode fp_mode,
+ RememberedSetAction remembered_set_action,
+ SmiCheck smi_check,
+ PointersToHereCheck pointers_to_here_check_for_value) {
+ DCHECK(!object.is(value));
+ DCHECK(!object.is(address));
+ DCHECK(!value.is(address));
AssertNotSmi(object);
if (remembered_set_action == OMIT_REMEMBERED_SET &&
bind(&ok);
}
- // Count number of write barriers in generated code.
- isolate()->counters()->write_barriers_static()->Increment();
- IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1);
-
// First, check if a write barrier is even needed. The tests below
// catch stores of Smis and stores into young gen.
Label done;
JumpIfSmi(value, &done, Label::kNear);
}
- CheckPageFlag(value,
- value, // Used as scratch.
- MemoryChunk::kPointersToHereAreInterestingMask,
- zero,
- &done,
- Label::kNear);
+ if (pointers_to_here_check_for_value != kPointersToHereAreAlwaysInteresting) {
+ CheckPageFlag(value,
+ value, // Used as scratch.
+ MemoryChunk::kPointersToHereAreInterestingMask,
+ zero,
+ &done,
+ Label::kNear);
+ }
CheckPageFlag(object,
value, // Used as scratch.
MemoryChunk::kPointersFromHereAreInterestingMask,
&done,
Label::kNear);
- RecordWriteStub stub(object, value, address, remembered_set_action, fp_mode);
+ RecordWriteStub stub(isolate(), object, value, address, remembered_set_action,
+ fp_mode);
CallStub(&stub);
bind(&done);
+ // Count number of write barriers in generated code.
+ isolate()->counters()->write_barriers_static()->Increment();
+ IncrementCounter(isolate()->counters()->write_barriers_dynamic(), 1);
+
// Clobber clobbered registers when running with the debug-code flag
// turned on to provoke errors.
if (emit_debug_code()) {
}
-#ifdef ENABLE_DEBUGGER_SUPPORT
void MacroAssembler::DebugBreak() {
- Set(eax, Immediate(0));
+ Move(eax, Immediate(0));
mov(ebx, Immediate(ExternalReference(Runtime::kDebugBreak, isolate())));
- CEntryStub ces(1);
- call(ces.GetCode(isolate()), RelocInfo::DEBUG_BREAK);
+ CEntryStub ces(isolate(), 1);
+ call(ces.GetCode(), RelocInfo::DEBUG_BREAK);
}
-#endif
void MacroAssembler::Cvtsi2sd(XMMRegister dst, const Operand& src) {
}
-void MacroAssembler::Set(Register dst, const Immediate& x) {
- if (x.is_zero()) {
- xor_(dst, dst); // Shorter than mov.
- } else {
- mov(dst, x);
- }
-}
-
-
-void MacroAssembler::Set(const Operand& dst, const Immediate& x) {
- mov(dst, x);
-}
-
-
bool MacroAssembler::IsUnsafeImmediate(const Immediate& x) {
static const int kMaxImmediateBits = 17;
if (!RelocInfo::IsNone(x.rmode_)) return false;
}
-void MacroAssembler::SafeSet(Register dst, const Immediate& x) {
+void MacroAssembler::SafeMove(Register dst, const Immediate& x) {
if (IsUnsafeImmediate(x) && jit_cookie() != 0) {
- Set(dst, Immediate(x.x_ ^ jit_cookie()));
+ Move(dst, Immediate(x.x_ ^ jit_cookie()));
xor_(dst, jit_cookie());
} else {
- Set(dst, x);
+ Move(dst, x);
}
}
Register scratch1,
XMMRegister scratch2,
Label* fail,
- bool specialize_for_processor,
int elements_offset) {
Label smi_value, done, maybe_nan, not_nan, is_nan, have_double_value;
JumpIfSmi(maybe_number, &smi_value, Label::kNear);
bind(¬_nan);
ExternalReference canonical_nan_reference =
ExternalReference::address_of_canonical_non_hole_nan();
- if (CpuFeatures::IsSupported(SSE2) && specialize_for_processor) {
- CpuFeatureScope use_sse2(this, SSE2);
- movsd(scratch2, FieldOperand(maybe_number, HeapNumber::kValueOffset));
- bind(&have_double_value);
- movsd(FieldOperand(elements, key, times_4,
- FixedDoubleArray::kHeaderSize - elements_offset),
- scratch2);
- } else {
- fld_d(FieldOperand(maybe_number, HeapNumber::kValueOffset));
- bind(&have_double_value);
- fstp_d(FieldOperand(elements, key, times_4,
- FixedDoubleArray::kHeaderSize - elements_offset));
- }
+ movsd(scratch2, FieldOperand(maybe_number, HeapNumber::kValueOffset));
+ bind(&have_double_value);
+ movsd(FieldOperand(elements, key, times_4,
+ FixedDoubleArray::kHeaderSize - elements_offset),
+ scratch2);
jmp(&done);
bind(&maybe_nan);
cmp(FieldOperand(maybe_number, HeapNumber::kValueOffset), Immediate(0));
j(zero, ¬_nan);
bind(&is_nan);
- if (CpuFeatures::IsSupported(SSE2) && specialize_for_processor) {
- CpuFeatureScope use_sse2(this, SSE2);
- movsd(scratch2, Operand::StaticVariable(canonical_nan_reference));
- } else {
- fld_d(Operand::StaticVariable(canonical_nan_reference));
- }
+ movsd(scratch2, Operand::StaticVariable(canonical_nan_reference));
jmp(&have_double_value, Label::kNear);
bind(&smi_value);
// Preserve original value.
mov(scratch1, maybe_number);
SmiUntag(scratch1);
- if (CpuFeatures::IsSupported(SSE2) && specialize_for_processor) {
- CpuFeatureScope fscope(this, SSE2);
- Cvtsi2sd(scratch2, scratch1);
- movsd(FieldOperand(elements, key, times_4,
- FixedDoubleArray::kHeaderSize - elements_offset),
- scratch2);
- } else {
- push(scratch1);
- fild_s(Operand(esp, 0));
- pop(scratch1);
- fstp_d(FieldOperand(elements, key, times_4,
- FixedDoubleArray::kHeaderSize - elements_offset));
- }
+ Cvtsi2sd(scratch2, scratch1);
+ movsd(FieldOperand(elements, key, times_4,
+ FixedDoubleArray::kHeaderSize - elements_offset),
+ scratch2);
bind(&done);
}
void MacroAssembler::FCmp() {
- if (CpuFeatures::IsSupported(CMOV)) {
- fucomip();
- fstp(0);
- } else {
- fucompp();
- push(eax);
- fnstsw_ax();
- sahf();
- pop(eax);
- }
+ fucomip();
+ fstp(0);
}
}
+void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) {
+ if (emit_debug_code()) {
+ Label done_checking;
+ AssertNotSmi(object);
+ cmp(object, isolate()->factory()->undefined_value());
+ j(equal, &done_checking);
+ cmp(FieldOperand(object, 0),
+ Immediate(isolate()->factory()->allocation_site_map()));
+ Assert(equal, kExpectedUndefinedOrCell);
+ bind(&done_checking);
+ }
+}
+
+
void MacroAssembler::AssertNotSmi(Register object) {
if (emit_debug_code()) {
test(object, Immediate(kSmiTagMask));
}
-void MacroAssembler::Prologue(PrologueFrameMode frame_mode) {
- if (frame_mode == BUILD_STUB_FRAME) {
+void MacroAssembler::StubPrologue() {
+ push(ebp); // Caller's frame pointer.
+ mov(ebp, esp);
+ push(esi); // Callee's context.
+ push(Immediate(Smi::FromInt(StackFrame::STUB)));
+}
+
+
+void MacroAssembler::Prologue(bool code_pre_aging) {
+ PredictableCodeSizeScope predictible_code_size_scope(this,
+ kNoCodeAgeSequenceLength);
+ if (code_pre_aging) {
+ // Pre-age the code.
+ call(isolate()->builtins()->MarkCodeAsExecutedOnce(),
+ RelocInfo::CODE_AGE_SEQUENCE);
+ Nop(kNoCodeAgeSequenceLength - Assembler::kCallInstructionLength);
+ } else {
push(ebp); // Caller's frame pointer.
mov(ebp, esp);
push(esi); // Callee's context.
- push(Immediate(Smi::FromInt(StackFrame::STUB)));
- } else {
- PredictableCodeSizeScope predictible_code_size_scope(this,
- kNoCodeAgeSequenceLength);
- if (isolate()->IsCodePreAgingActive()) {
- // Pre-age the code.
- call(isolate()->builtins()->MarkCodeAsExecutedOnce(),
- RelocInfo::CODE_AGE_SEQUENCE);
- Nop(kNoCodeAgeSequenceLength - Assembler::kCallInstructionLength);
- } else {
- push(ebp); // Caller's frame pointer.
- mov(ebp, esp);
- push(esi); // Callee's context.
- push(edi); // Callee's JS function.
- }
+ push(edi); // Callee's JS function.
}
}
void MacroAssembler::EnterExitFramePrologue() {
// Set up the frame structure on the stack.
- ASSERT(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize);
- ASSERT(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize);
- ASSERT(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize);
+ DCHECK(ExitFrameConstants::kCallerSPDisplacement == +2 * kPointerSize);
+ DCHECK(ExitFrameConstants::kCallerPCOffset == +1 * kPointerSize);
+ DCHECK(ExitFrameConstants::kCallerFPOffset == 0 * kPointerSize);
push(ebp);
mov(ebp, esp);
// Reserve room for entry stack pointer and push the code object.
- ASSERT(ExitFrameConstants::kSPOffset == -1 * kPointerSize);
+ DCHECK(ExitFrameConstants::kSPOffset == -1 * kPointerSize);
push(Immediate(0)); // Saved entry sp, patched before call.
push(Immediate(CodeObject())); // Accessed from ExitFrame::code_slot.
void MacroAssembler::EnterExitFrameEpilogue(int argc, bool save_doubles) {
// Optionally save all XMM registers.
if (save_doubles) {
- CpuFeatureScope scope(this, SSE2);
- int space = XMMRegister::kNumRegisters * kSIMD128Size +
- argc * kPointerSize;
+ int space = XMMRegister::kMaxNumRegisters * kDoubleSize +
+ argc * kPointerSize;
sub(esp, Immediate(space));
const int offset = -2 * kPointerSize;
- for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+ for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
XMMRegister reg = XMMRegister::from_code(i);
- movups(Operand(ebp, offset - ((i + 1) * kSIMD128Size)), reg);
+ movsd(Operand(ebp, offset - ((i + 1) * kDoubleSize)), reg);
}
} else {
sub(esp, Immediate(argc * kPointerSize));
}
// Get the required frame alignment for the OS.
- const int kFrameAlignment = OS::ActivationFrameAlignment();
+ const int kFrameAlignment = base::OS::ActivationFrameAlignment();
if (kFrameAlignment > 0) {
- ASSERT(IsPowerOf2(kFrameAlignment));
+ DCHECK(IsPowerOf2(kFrameAlignment));
and_(esp, -kFrameAlignment);
}
void MacroAssembler::LeaveExitFrame(bool save_doubles) {
// Optionally restore all XMM registers.
if (save_doubles) {
- CpuFeatureScope scope(this, SSE2);
const int offset = -2 * kPointerSize;
- for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+ for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
XMMRegister reg = XMMRegister::from_code(i);
- movups(reg, Operand(ebp, offset - ((i + 1) * kSIMD128Size)));
+ movsd(reg, Operand(ebp, offset - ((i + 1) * kDoubleSize)));
}
}
Label* miss) {
Label same_contexts;
- ASSERT(!holder_reg.is(scratch1));
- ASSERT(!holder_reg.is(scratch2));
- ASSERT(!scratch1.is(scratch2));
+ DCHECK(!holder_reg.is(scratch1));
+ DCHECK(!holder_reg.is(scratch2));
+ DCHECK(!scratch1.is(scratch2));
// Load current lexical context from the stack frame.
mov(scratch1, Operand(ebp, StandardFrameConstants::kContextOffset));
// Compute the hash code from the untagged key. This must be kept in sync with
-// ComputeIntegerHash in utils.h and KeyedLoadGenericElementStub in
+// ComputeIntegerHash in utils.h and KeyedLoadGenericStub in
// code-stub-hydrogen.cc
//
// Note: r0 will contain hash code
void MacroAssembler::GetNumberHash(Register r0, Register scratch) {
// Xor original key with a seed.
- if (Serializer::enabled()) {
+ if (serializer_enabled()) {
ExternalReference roots_array_start =
ExternalReference::roots_array_start(isolate());
mov(scratch, Immediate(Heap::kHashSeedRootIndex));
and_(r2, r1);
// Scale the index by multiplying by the entry size.
- ASSERT(SeededNumberDictionary::kEntrySize == 3);
+ DCHECK(SeededNumberDictionary::kEntrySize == 3);
lea(r2, Operand(r2, r2, times_2, 0)); // r2 = r2 * 3
// Check if the key matches.
// Check that the value is a normal propety.
const int kDetailsOffset =
SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize;
- ASSERT_EQ(NORMAL, 0);
+ DCHECK_EQ(NORMAL, 0);
test(FieldOperand(elements, r2, times_pointer_size, kDetailsOffset),
Immediate(PropertyDetails::TypeField::kMask << kSmiTagSize));
j(not_zero, miss);
// Just return if allocation top is already known.
if ((flags & RESULT_CONTAINS_TOP) != 0) {
// No use of scratch if allocation top is provided.
- ASSERT(scratch.is(no_reg));
+ DCHECK(scratch.is(no_reg));
#ifdef DEBUG
// Assert that result actually contains top on entry.
cmp(result, Operand::StaticVariable(allocation_top));
Register scratch,
Label* gc_required,
AllocationFlags flags) {
- ASSERT((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0);
- ASSERT(object_size <= Page::kMaxRegularHeapObjectSize);
+ DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0);
+ DCHECK(object_size <= Page::kMaxRegularHeapObjectSize);
if (!FLAG_inline_new) {
if (emit_debug_code()) {
// Trash the registers to simulate an allocation failure.
jmp(gc_required);
return;
}
- ASSERT(!result.is(result_end));
+ DCHECK(!result.is(result_end));
// Load address of new object into result.
LoadAllocationTopHelper(result, scratch, flags);
// Align the next allocation. Storing the filler map without checking top is
// safe in new-space because the limit of the heap is aligned there.
if ((flags & DOUBLE_ALIGNMENT) != 0) {
- ASSERT((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
- ASSERT(kPointerAlignment * 2 == kDoubleAlignment);
+ DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
+ DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
Label aligned;
test(result, Immediate(kDoubleAlignmentMask));
j(zero, &aligned, Label::kNear);
sub(result, Immediate(object_size));
}
} else if (tag_result) {
- ASSERT(kHeapObjectTag == 1);
+ DCHECK(kHeapObjectTag == 1);
inc(result);
}
}
Register scratch,
Label* gc_required,
AllocationFlags flags) {
- ASSERT((flags & SIZE_IN_WORDS) == 0);
+ DCHECK((flags & SIZE_IN_WORDS) == 0);
if (!FLAG_inline_new) {
if (emit_debug_code()) {
// Trash the registers to simulate an allocation failure.
jmp(gc_required);
return;
}
- ASSERT(!result.is(result_end));
+ DCHECK(!result.is(result_end));
// Load address of new object into result.
LoadAllocationTopHelper(result, scratch, flags);
// Align the next allocation. Storing the filler map without checking top is
// safe in new-space because the limit of the heap is aligned there.
if ((flags & DOUBLE_ALIGNMENT) != 0) {
- ASSERT((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
- ASSERT(kPointerAlignment * 2 == kDoubleAlignment);
+ DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
+ DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
Label aligned;
test(result, Immediate(kDoubleAlignmentMask));
j(zero, &aligned, Label::kNear);
STATIC_ASSERT(static_cast<ScaleFactor>(times_2 - 1) == times_1);
STATIC_ASSERT(static_cast<ScaleFactor>(times_4 - 1) == times_2);
STATIC_ASSERT(static_cast<ScaleFactor>(times_8 - 1) == times_4);
- ASSERT(element_size >= times_2);
- ASSERT(kSmiTagSize == 1);
+ DCHECK(element_size >= times_2);
+ DCHECK(kSmiTagSize == 1);
element_size = static_cast<ScaleFactor>(element_size - 1);
} else {
- ASSERT(element_count_type == REGISTER_VALUE_IS_INT32);
+ DCHECK(element_count_type == REGISTER_VALUE_IS_INT32);
}
lea(result_end, Operand(element_count, element_size, header_size));
add(result_end, result);
j(above, gc_required);
if ((flags & TAG_OBJECT) != 0) {
- ASSERT(kHeapObjectTag == 1);
+ DCHECK(kHeapObjectTag == 1);
inc(result);
}
Register scratch,
Label* gc_required,
AllocationFlags flags) {
- ASSERT((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0);
+ DCHECK((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0);
if (!FLAG_inline_new) {
if (emit_debug_code()) {
// Trash the registers to simulate an allocation failure.
jmp(gc_required);
return;
}
- ASSERT(!result.is(result_end));
+ DCHECK(!result.is(result_end));
// Load address of new object into result.
LoadAllocationTopHelper(result, scratch, flags);
// Align the next allocation. Storing the filler map without checking top is
// safe in new-space because the limit of the heap is aligned there.
if ((flags & DOUBLE_ALIGNMENT) != 0) {
- ASSERT((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
- ASSERT(kPointerAlignment * 2 == kDoubleAlignment);
+ DCHECK((flags & PRETENURE_OLD_POINTER_SPACE) == 0);
+ DCHECK(kPointerAlignment * 2 == kDoubleAlignment);
Label aligned;
test(result, Immediate(kDoubleAlignmentMask));
j(zero, &aligned, Label::kNear);
// Tag result if requested.
if ((flags & TAG_OBJECT) != 0) {
- ASSERT(kHeapObjectTag == 1);
+ DCHECK(kHeapObjectTag == 1);
inc(result);
}
void MacroAssembler::AllocateHeapNumber(Register result,
Register scratch1,
Register scratch2,
- Label* gc_required) {
+ Label* gc_required,
+ MutableMode mode) {
// Allocate heap number in new space.
Allocate(HeapNumber::kSize, result, scratch1, scratch2, gc_required,
TAG_OBJECT);
- // Set the map.
- mov(FieldOperand(result, HeapObject::kMapOffset),
- Immediate(isolate()->factory()->heap_number_map()));
-}
-
-
-void MacroAssembler::AllocateSIMDHeapObject(int size,
- Register result,
- Register scratch,
- Label* gc_required,
- Heap::RootListIndex map_index) {
- Allocate(size, result, scratch, no_reg, gc_required, TAG_OBJECT);
+ Handle<Map> map = mode == MUTABLE
+ ? isolate()->factory()->mutable_heap_number_map()
+ : isolate()->factory()->heap_number_map();
// Set the map.
- switch (map_index) {
- case Heap::kFloat32x4MapRootIndex:
- mov(FieldOperand(result, HeapObject::kMapOffset),
- Immediate(isolate()->factory()->float32x4_map()));
- break;
- case Heap::kInt32x4MapRootIndex:
- mov(FieldOperand(result, HeapObject::kMapOffset),
- Immediate(isolate()->factory()->int32x4_map()));
- break;
- default:
- UNREACHABLE();
- }
+ mov(FieldOperand(result, HeapObject::kMapOffset), Immediate(map));
}
Label* gc_required) {
// Calculate the number of bytes needed for the characters in the string while
// observing object alignment.
- ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0);
- ASSERT(kShortSize == 2);
+ DCHECK((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0);
+ DCHECK(kShortSize == 2);
// scratch1 = length * 2 + kObjectAlignmentMask.
lea(scratch1, Operand(length, length, times_1, kObjectAlignmentMask));
and_(scratch1, Immediate(~kObjectAlignmentMask));
Label* gc_required) {
// Calculate the number of bytes needed for the characters in the string while
// observing object alignment.
- ASSERT((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0);
+ DCHECK((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0);
mov(scratch1, length);
- ASSERT(kCharSize == 1);
+ DCHECK(kCharSize == 1);
add(scratch1, Immediate(kObjectAlignmentMask));
and_(scratch1, Immediate(~kObjectAlignmentMask));
Register scratch1,
Register scratch2,
Label* gc_required) {
- ASSERT(length > 0);
+ DCHECK(length > 0);
// Allocate ASCII string in new space.
Allocate(SeqOneByteString::SizeFor(length), result, scratch1, scratch2,
Register scratch1,
Register scratch2,
Label* gc_required) {
- Label allocate_new_space, install_map;
- AllocationFlags flags = TAG_OBJECT;
-
- ExternalReference high_promotion_mode = ExternalReference::
- new_space_high_promotion_mode_active_address(isolate());
-
- test(Operand::StaticVariable(high_promotion_mode), Immediate(1));
- j(zero, &allocate_new_space);
-
Allocate(ConsString::kSize,
result,
scratch1,
scratch2,
gc_required,
- static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE));
- jmp(&install_map);
-
- bind(&allocate_new_space);
- Allocate(ConsString::kSize,
- result,
- scratch1,
- scratch2,
- gc_required,
- flags);
+ TAG_OBJECT);
- bind(&install_map);
// Set the map. The other fields are left uninitialized.
mov(FieldOperand(result, HeapObject::kMapOffset),
Immediate(isolate()->factory()->cons_ascii_string_map()));
Register length,
Register scratch) {
Label short_loop, len4, len8, len12, done, short_string;
- ASSERT(source.is(esi));
- ASSERT(destination.is(edi));
- ASSERT(length.is(ecx));
+ DCHECK(source.is(esi));
+ DCHECK(destination.is(edi));
+ DCHECK(length.is(ecx));
cmp(length, Immediate(4));
j(below, &short_string, Label::kNear);
int field_offset,
int bit_index) {
bit_index += kSmiTagSize + kSmiShiftSize;
- ASSERT(IsPowerOf2(kBitsPerByte));
+ DCHECK(IsPowerOf2(kBitsPerByte));
int byte_index = bit_index / kBitsPerByte;
int byte_bit_index = bit_index & (kBitsPerByte - 1);
test_b(FieldOperand(object, field_offset + byte_index),
Register scratch,
Label* miss,
bool miss_on_bound_function) {
- // Check that the receiver isn't a smi.
- JumpIfSmi(function, miss);
+ Label non_instance;
+ if (miss_on_bound_function) {
+ // Check that the receiver isn't a smi.
+ JumpIfSmi(function, miss);
- // Check that the function really is a function.
- CmpObjectType(function, JS_FUNCTION_TYPE, result);
- j(not_equal, miss);
+ // Check that the function really is a function.
+ CmpObjectType(function, JS_FUNCTION_TYPE, result);
+ j(not_equal, miss);
- if (miss_on_bound_function) {
// If a bound function, go to miss label.
mov(scratch,
FieldOperand(function, JSFunction::kSharedFunctionInfoOffset));
BooleanBitTest(scratch, SharedFunctionInfo::kCompilerHintsOffset,
SharedFunctionInfo::kBoundFunction);
j(not_zero, miss);
- }
- // Make sure that the function has an instance prototype.
- Label non_instance;
- movzx_b(scratch, FieldOperand(result, Map::kBitFieldOffset));
- test(scratch, Immediate(1 << Map::kHasNonInstancePrototype));
- j(not_zero, &non_instance);
+ // Make sure that the function has an instance prototype.
+ movzx_b(scratch, FieldOperand(result, Map::kBitFieldOffset));
+ test(scratch, Immediate(1 << Map::kHasNonInstancePrototype));
+ j(not_zero, &non_instance);
+ }
// Get the prototype or initial map from the function.
mov(result,
// Get the prototype from the initial map.
mov(result, FieldOperand(result, Map::kPrototypeOffset));
- jmp(&done);
- // Non-instance prototype: Fetch prototype from constructor field
- // in initial map.
- bind(&non_instance);
- mov(result, FieldOperand(result, Map::kConstructorOffset));
+ if (miss_on_bound_function) {
+ jmp(&done);
+
+ // Non-instance prototype: Fetch prototype from constructor field
+ // in initial map.
+ bind(&non_instance);
+ mov(result, FieldOperand(result, Map::kConstructorOffset));
+ }
// All done.
bind(&done);
void MacroAssembler::CallStub(CodeStub* stub, TypeFeedbackId ast_id) {
- ASSERT(AllowThisStubCall(stub)); // Calls are not allowed in some stubs.
- call(stub->GetCode(isolate()), RelocInfo::CODE_TARGET, ast_id);
+ DCHECK(AllowThisStubCall(stub)); // Calls are not allowed in some stubs.
+ call(stub->GetCode(), RelocInfo::CODE_TARGET, ast_id);
}
void MacroAssembler::TailCallStub(CodeStub* stub) {
- jmp(stub->GetCode(isolate()), RelocInfo::CODE_TARGET);
+ jmp(stub->GetCode(), RelocInfo::CODE_TARGET);
}
void MacroAssembler::StubReturn(int argc) {
- ASSERT(argc >= 1 && generating_stub());
+ DCHECK(argc >= 1 && generating_stub());
ret((argc - 1) * kPointerSize);
}
}
-void MacroAssembler::IllegalOperation(int num_arguments) {
- if (num_arguments > 0) {
- add(esp, Immediate(num_arguments * kPointerSize));
- }
- mov(eax, Immediate(isolate()->factory()->undefined_value()));
-}
-
-
void MacroAssembler::IndexFromHash(Register hash, Register index) {
// The assert checks that the constants for the maximum number of digits
// for an array index cached in the hash field and the number of bits
// reserved for it does not conflict.
- ASSERT(TenToThe(String::kMaxCachedArrayIndexLength) <
+ DCHECK(TenToThe(String::kMaxCachedArrayIndexLength) <
(1 << String::kArrayIndexValueBits));
- // We want the smi-tagged index in key. kArrayIndexValueMask has zeros in
- // the low kHashShift bits.
- and_(hash, String::kArrayIndexValueMask);
- STATIC_ASSERT(String::kHashShift >= kSmiTagSize && kSmiTag == 0);
- if (String::kHashShift > kSmiTagSize) {
- shr(hash, String::kHashShift - kSmiTagSize);
- }
if (!index.is(hash)) {
mov(index, hash);
}
+ DecodeFieldToSmi<String::ArrayIndexValueBits>(index);
}
// If the expected number of arguments of the runtime function is
// constant, we check that the actual number of arguments match the
// expectation.
- if (f->nargs >= 0 && f->nargs != num_arguments) {
- IllegalOperation(num_arguments);
- return;
- }
+ CHECK(f->nargs < 0 || f->nargs == num_arguments);
// TODO(1236192): Most runtime routines don't need the number of
// arguments passed in because it is constant. At some point we
// should remove this need and make the runtime routine entry code
// smarter.
- Set(eax, Immediate(num_arguments));
+ Move(eax, Immediate(num_arguments));
mov(ebx, Immediate(ExternalReference(f, isolate())));
- CEntryStub ces(1, CpuFeatures::IsSupported(SSE2) ? save_doubles
- : kDontSaveFPRegs);
+ CEntryStub ces(isolate(), 1, save_doubles);
CallStub(&ces);
}
mov(eax, Immediate(num_arguments));
mov(ebx, Immediate(ref));
- CEntryStub stub(1);
+ CEntryStub stub(isolate(), 1);
CallStub(&stub);
}
// arguments passed in because it is constant. At some point we
// should remove this need and make the runtime routine entry code
// smarter.
- Set(eax, Immediate(num_arguments));
+ Move(eax, Immediate(num_arguments));
JumpToExternalReference(ext);
}
void MacroAssembler::CallApiFunctionAndReturn(
Register function_address,
- Address thunk_address,
+ ExternalReference thunk_ref,
Operand thunk_last_arg,
int stack_space,
Operand return_value_operand,
ExternalReference level_address =
ExternalReference::handle_scope_level_address(isolate());
- ASSERT(edx.is(function_address));
+ DCHECK(edx.is(function_address));
// Allocate HandleScope in callee-save registers.
mov(ebx, Operand::StaticVariable(next_address));
mov(edi, Operand::StaticVariable(limit_address));
Label profiler_disabled;
Label end_profiler_check;
- bool* is_profiling_flag =
- isolate()->cpu_profiler()->is_profiling_address();
- STATIC_ASSERT(sizeof(*is_profiling_flag) == 1);
- mov(eax, Immediate(reinterpret_cast<Address>(is_profiling_flag)));
+ mov(eax, Immediate(ExternalReference::is_profiling_address(isolate())));
cmpb(Operand(eax, 0), 0);
j(zero, &profiler_disabled);
// Additional parameter is the address of the actual getter function.
mov(thunk_last_arg, function_address);
// Call the api function.
- call(thunk_address, RelocInfo::RUNTIME_ENTRY);
+ mov(eax, Immediate(thunk_ref));
+ call(eax);
jmp(&end_profiler_check);
bind(&profiler_disabled);
void MacroAssembler::JumpToExternalReference(const ExternalReference& ext) {
// Set the entry point and jump to the C entry runtime stub.
mov(ebx, Immediate(ext));
- CEntryStub ces(1);
- jmp(ces.GetCode(isolate()), RelocInfo::CODE_TARGET);
+ CEntryStub ces(isolate(), 1);
+ jmp(ces.GetCode(), RelocInfo::CODE_TARGET);
}
*definitely_mismatches = false;
Label invoke;
if (expected.is_immediate()) {
- ASSERT(actual.is_immediate());
+ DCHECK(actual.is_immediate());
if (expected.immediate() == actual.immediate()) {
definitely_matches = true;
} else {
// IC mechanism.
cmp(expected.reg(), actual.immediate());
j(equal, &invoke);
- ASSERT(expected.reg().is(ebx));
+ DCHECK(expected.reg().is(ebx));
mov(eax, actual.immediate());
} else if (!expected.reg().is(actual.reg())) {
// Both expected and actual are in (different) registers. This
// is the case when we invoke functions using call and apply.
cmp(expected.reg(), actual.reg());
j(equal, &invoke);
- ASSERT(actual.reg().is(eax));
- ASSERT(expected.reg().is(ebx));
+ DCHECK(actual.reg().is(eax));
+ DCHECK(expected.reg().is(ebx));
}
}
InvokeFlag flag,
const CallWrapper& call_wrapper) {
// You can't call a function without a valid frame.
- ASSERT(flag == JUMP_FUNCTION || has_frame());
+ DCHECK(flag == JUMP_FUNCTION || has_frame());
Label done;
bool definitely_mismatches = false;
call(code);
call_wrapper.AfterCall();
} else {
- ASSERT(flag == JUMP_FUNCTION);
+ DCHECK(flag == JUMP_FUNCTION);
jmp(code);
}
bind(&done);
InvokeFlag flag,
const CallWrapper& call_wrapper) {
// You can't call a function without a valid frame.
- ASSERT(flag == JUMP_FUNCTION || has_frame());
+ DCHECK(flag == JUMP_FUNCTION || has_frame());
- ASSERT(fun.is(edi));
+ DCHECK(fun.is(edi));
mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
mov(ebx, FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset));
InvokeFlag flag,
const CallWrapper& call_wrapper) {
// You can't call a function without a valid frame.
- ASSERT(flag == JUMP_FUNCTION || has_frame());
+ DCHECK(flag == JUMP_FUNCTION || has_frame());
- ASSERT(fun.is(edi));
+ DCHECK(fun.is(edi));
mov(esi, FieldOperand(edi, JSFunction::kContextOffset));
InvokeCode(FieldOperand(edi, JSFunction::kCodeEntryOffset),
InvokeFlag flag,
const CallWrapper& call_wrapper) {
// You can't call a builtin without a valid frame.
- ASSERT(flag == JUMP_FUNCTION || has_frame());
+ DCHECK(flag == JUMP_FUNCTION || has_frame());
// Rely on the assertion to check that the number of provided
// arguments match the expected number of arguments. Fake a
void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
- ASSERT(!target.is(edi));
+ DCHECK(!target.is(edi));
// Load the JavaScript builtin function from the builtins object.
GetBuiltinFunction(edi, id);
// Load the code entry point from the function into the target register.
}
-void MacroAssembler::LoadInitialArrayMap(
- Register function_in, Register scratch,
- Register map_out, bool can_have_holes) {
- ASSERT(!function_in.is(map_out));
- Label done;
- mov(map_out, FieldOperand(function_in,
- JSFunction::kPrototypeOrInitialMapOffset));
- if (!FLAG_smi_only_arrays) {
- ElementsKind kind = can_have_holes ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS;
- LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
- kind,
- map_out,
- scratch,
- &done);
- } else if (can_have_holes) {
- LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS,
- FAST_HOLEY_SMI_ELEMENTS,
- map_out,
- scratch,
- &done);
- }
- bind(&done);
-}
-
-
-void MacroAssembler::LoadGlobalContext(Register global_context) {
- // Load the global or builtins object from the current context.
- mov(global_context,
- Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
- // Load the native context from the global or builtins object.
- mov(global_context,
- FieldOperand(global_context, GlobalObject::kNativeContextOffset));
-}
-
-
void MacroAssembler::LoadGlobalFunction(int index, Register function) {
// Load the global or builtins object from the current context.
mov(function,
// The registers are pushed starting with the lowest encoding,
// which means that lowest encodings are furthest away from
// the stack pointer.
- ASSERT(reg_code >= 0 && reg_code < kNumSafepointRegisters);
+ DCHECK(reg_code >= 0 && reg_code < kNumSafepointRegisters);
return kNumSafepointRegisters - reg_code - 1;
}
}
-void MacroAssembler::VerifyX87StackDepth(uint32_t depth) {
- // Make sure the floating point stack is either empty or has depth items.
- ASSERT(depth <= 7);
- // This is very expensive.
- ASSERT(FLAG_debug_code && FLAG_enable_slow_asserts);
-
- // The top-of-stack (tos) is 7 if there is one item pushed.
- int tos = (8 - depth) % 8;
- const int kTopMask = 0x3800;
- push(eax);
- fwait();
- fnstsw_ax();
- and_(eax, kTopMask);
- shr(eax, 11);
- cmp(eax, Immediate(tos));
- Check(equal, kUnexpectedFPUStackDepthAfterInstruction);
- fnclex();
- pop(eax);
-}
-
-
void MacroAssembler::Drop(int stack_elements) {
if (stack_elements > 0) {
add(esp, Immediate(stack_elements * kPointerSize));
}
+void MacroAssembler::Move(Register dst, const Immediate& x) {
+ if (x.is_zero()) {
+ xor_(dst, dst); // Shorter than mov of 32-bit immediate 0.
+ } else {
+ mov(dst, x);
+ }
+}
+
+
+void MacroAssembler::Move(const Operand& dst, const Immediate& x) {
+ mov(dst, x);
+}
+
+
+void MacroAssembler::Move(XMMRegister dst, double val) {
+ // TODO(titzer): recognize double constants with ExternalReferences.
+ uint64_t int_val = BitCast<uint64_t, double>(val);
+ if (int_val == 0) {
+ xorps(dst, dst);
+ } else {
+ int32_t lower = static_cast<int32_t>(int_val);
+ int32_t upper = static_cast<int32_t>(int_val >> kBitsPerInt);
+ push(Immediate(upper));
+ push(Immediate(lower));
+ movsd(dst, Operand(esp, 0));
+ add(esp, Immediate(kDoubleSize));
+ }
+}
+
+
void MacroAssembler::SetCounter(StatsCounter* counter, int value) {
if (FLAG_native_code_counters && counter->Enabled()) {
mov(Operand::StaticVariable(ExternalReference(counter)), Immediate(value));
void MacroAssembler::IncrementCounter(StatsCounter* counter, int value) {
- ASSERT(value > 0);
+ DCHECK(value > 0);
if (FLAG_native_code_counters && counter->Enabled()) {
Operand operand = Operand::StaticVariable(ExternalReference(counter));
if (value == 1) {
void MacroAssembler::DecrementCounter(StatsCounter* counter, int value) {
- ASSERT(value > 0);
+ DCHECK(value > 0);
if (FLAG_native_code_counters && counter->Enabled()) {
Operand operand = Operand::StaticVariable(ExternalReference(counter));
if (value == 1) {
void MacroAssembler::IncrementCounter(Condition cc,
StatsCounter* counter,
int value) {
- ASSERT(value > 0);
+ DCHECK(value > 0);
if (FLAG_native_code_counters && counter->Enabled()) {
Label skip;
j(NegateCondition(cc), &skip);
void MacroAssembler::DecrementCounter(Condition cc,
StatsCounter* counter,
int value) {
- ASSERT(value > 0);
+ DCHECK(value > 0);
if (FLAG_native_code_counters && counter->Enabled()) {
Label skip;
j(NegateCondition(cc), &skip);
void MacroAssembler::CheckStackAlignment() {
- int frame_alignment = OS::ActivationFrameAlignment();
+ int frame_alignment = base::OS::ActivationFrameAlignment();
int frame_alignment_mask = frame_alignment - 1;
if (frame_alignment > kPointerSize) {
- ASSERT(IsPowerOf2(frame_alignment));
+ DCHECK(IsPowerOf2(frame_alignment));
Label alignment_as_expected;
test(esp, Immediate(frame_alignment_mask));
j(zero, &alignment_as_expected);
void MacroAssembler::Abort(BailoutReason reason) {
- // We want to pass the msg string like a smi to avoid GC
- // problems, however msg is not guaranteed to be aligned
- // properly. Instead, we pass an aligned pointer that is
- // a proper v8 smi, but also pass the alignment difference
- // from the real pointer as a smi.
- const char* msg = GetBailoutReason(reason);
- intptr_t p1 = reinterpret_cast<intptr_t>(msg);
- intptr_t p0 = (p1 & ~kSmiTagMask) + kSmiTag;
- ASSERT(reinterpret_cast<Object*>(p0)->IsSmi());
#ifdef DEBUG
+ const char* msg = GetBailoutReason(reason);
if (msg != NULL) {
RecordComment("Abort message: ");
RecordComment(msg);
}
#endif
- push(eax);
- push(Immediate(p0));
- push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(p1 - p0))));
+ push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(reason))));
// Disable stub call restrictions to always allow calls to abort.
if (!has_frame_) {
// We don't actually want to generate a pile of code for this, so just
// claim there is a stack frame, without generating one.
FrameScope scope(this, StackFrame::NONE);
- CallRuntime(Runtime::kAbort, 2);
- } else {
- CallRuntime(Runtime::kAbort, 2);
- }
- // will not return here
- int3();
-}
-
-
-void MacroAssembler::Throw(BailoutReason reason) {
-#ifdef DEBUG
- const char* msg = GetBailoutReason(reason);
- if (msg != NULL) {
- RecordComment("Throw message: ");
- RecordComment(msg);
- }
-#endif
-
- push(eax);
- push(Immediate(Smi::FromInt(reason)));
- // Disable stub call restrictions to always allow calls to throw.
- if (!has_frame_) {
- // We don't actually want to generate a pile of code for this, so just
- // claim there is a stack frame, without generating one.
- FrameScope scope(this, StackFrame::NONE);
- CallRuntime(Runtime::kThrowMessage, 1);
+ CallRuntime(Runtime::kAbort, 1);
} else {
- CallRuntime(Runtime::kThrowMessage, 1);
+ CallRuntime(Runtime::kAbort, 1);
}
// will not return here
int3();
}
-void MacroAssembler::ThrowIf(Condition cc, BailoutReason reason) {
- Label L;
- j(NegateCondition(cc), &L);
- Throw(reason);
- // will not return here
- bind(&L);
-}
-
-
void MacroAssembler::LoadInstanceDescriptors(Register map,
Register descriptors) {
mov(descriptors, FieldOperand(map, Map::kDescriptorsOffset));
void MacroAssembler::LoadPowerOf2(XMMRegister dst,
Register scratch,
int power) {
- ASSERT(is_uintn(power + HeapNumber::kExponentBias,
+ DCHECK(is_uintn(power + HeapNumber::kExponentBias,
HeapNumber::kExponentBits));
mov(scratch, Immediate(power + HeapNumber::kExponentBias));
movd(dst, scratch);
times_twice_pointer_size,
FixedArray::kHeaderSize));
JumpIfSmi(probe, not_found);
- if (CpuFeatures::IsSupported(SSE2)) {
- CpuFeatureScope fscope(this, SSE2);
- movsd(xmm0, FieldOperand(object, HeapNumber::kValueOffset));
- ucomisd(xmm0, FieldOperand(probe, HeapNumber::kValueOffset));
- } else {
- fld_d(FieldOperand(object, HeapNumber::kValueOffset));
- fld_d(FieldOperand(probe, HeapNumber::kValueOffset));
- FCmp();
- }
+ movsd(xmm0, FieldOperand(object, HeapNumber::kValueOffset));
+ ucomisd(xmm0, FieldOperand(probe, HeapNumber::kValueOffset));
j(parity_even, not_found); // Bail out if NaN is involved.
j(not_equal, not_found); // The cache did not contain this value.
jmp(&load_result_from_cache, Label::kNear);
const int kFlatAsciiStringTag =
kStringTag | kOneByteStringTag | kSeqStringTag;
// Interleave bits from both instance types and compare them in one check.
- ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3));
+ DCHECK_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3));
and_(scratch1, kFlatAsciiStringMask);
and_(scratch2, kFlatAsciiStringMask);
lea(scratch1, Operand(scratch1, scratch2, times_8, 0));
void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) {
- int frame_alignment = OS::ActivationFrameAlignment();
+ int frame_alignment = base::OS::ActivationFrameAlignment();
if (frame_alignment != 0) {
// Make stack end at alignment and make room for num_arguments words
// and the original value of esp.
mov(scratch, esp);
sub(esp, Immediate((num_arguments + 1) * kPointerSize));
- ASSERT(IsPowerOf2(frame_alignment));
+ DCHECK(IsPowerOf2(frame_alignment));
and_(esp, -frame_alignment);
mov(Operand(esp, num_arguments * kPointerSize), scratch);
} else {
void MacroAssembler::CallCFunction(Register function,
int num_arguments) {
- ASSERT(has_frame());
+ DCHECK(has_frame());
// Check stack alignment.
if (emit_debug_code()) {
CheckStackAlignment();
}
call(function);
- if (OS::ActivationFrameAlignment() != 0) {
+ if (base::OS::ActivationFrameAlignment() != 0) {
mov(esp, Operand(esp, num_arguments * kPointerSize));
} else {
add(esp, Immediate(num_arguments * kPointerSize));
}
-bool AreAliased(Register r1, Register r2, Register r3, Register r4) {
- if (r1.is(r2)) return true;
- if (r1.is(r3)) return true;
- if (r1.is(r4)) return true;
- if (r2.is(r3)) return true;
- if (r2.is(r4)) return true;
- if (r3.is(r4)) return true;
- return false;
+#ifdef DEBUG
+bool AreAliased(Register reg1,
+ Register reg2,
+ Register reg3,
+ Register reg4,
+ Register reg5,
+ Register reg6,
+ Register reg7,
+ Register reg8) {
+ int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() +
+ reg3.is_valid() + reg4.is_valid() + reg5.is_valid() + reg6.is_valid() +
+ reg7.is_valid() + reg8.is_valid();
+
+ RegList regs = 0;
+ if (reg1.is_valid()) regs |= reg1.bit();
+ if (reg2.is_valid()) regs |= reg2.bit();
+ if (reg3.is_valid()) regs |= reg3.bit();
+ if (reg4.is_valid()) regs |= reg4.bit();
+ if (reg5.is_valid()) regs |= reg5.bit();
+ if (reg6.is_valid()) regs |= reg6.bit();
+ if (reg7.is_valid()) regs |= reg7.bit();
+ if (reg8.is_valid()) regs |= reg8.bit();
+ int n_of_non_aliasing_regs = NumRegs(regs);
+
+ return n_of_valid_regs != n_of_non_aliasing_regs;
}
+#endif
CodePatcher::CodePatcher(byte* address, int size)
// Create a new macro assembler pointing to the address of the code to patch.
// The size is adjusted with kGap on order for the assembler to generate size
// bytes of instructions without failing with buffer size constraints.
- ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
+ DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
}
CodePatcher::~CodePatcher() {
// Indicate that code has changed.
- CPU::FlushICache(address_, size_);
+ CpuFeatures::FlushICache(address_, size_);
// Check that the code was patched as expected.
- ASSERT(masm_.pc_ == address_ + size_);
- ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
+ DCHECK(masm_.pc_ == address_ + size_);
+ DCHECK(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
}
Condition cc,
Label* condition_met,
Label::Distance condition_met_distance) {
- ASSERT(cc == zero || cc == not_zero);
+ DCHECK(cc == zero || cc == not_zero);
if (scratch.is(object)) {
and_(scratch, Immediate(~Page::kPageAlignmentMask));
} else {
Condition cc,
Label* condition_met,
Label::Distance condition_met_distance) {
- ASSERT(cc == zero || cc == not_zero);
+ DCHECK(cc == zero || cc == not_zero);
Page* page = Page::FromAddress(map->address());
+ DCHECK(!serializer_enabled()); // Serializer cannot match page_flags.
ExternalReference reference(ExternalReference::page_flags(page));
// The inlined static address check of the page's flags relies
// on maps never being compacted.
- ASSERT(!isolate()->heap()->mark_compact_collector()->
+ DCHECK(!isolate()->heap()->mark_compact_collector()->
IsOnEvacuationCandidate(*map));
if (mask < (1 << kBitsPerByte)) {
test_b(Operand::StaticVariable(reference), static_cast<uint8_t>(mask));
if (map->CanBeDeprecated()) {
mov(scratch, map);
mov(scratch, FieldOperand(scratch, Map::kBitField3Offset));
- and_(scratch, Immediate(Smi::FromInt(Map::Deprecated::kMask)));
+ and_(scratch, Immediate(Map::Deprecated::kMask));
j(not_zero, if_deprecated);
}
}
HasColor(object, scratch0, scratch1,
on_black, on_black_near,
1, 0); // kBlackBitPattern.
- ASSERT(strcmp(Marking::kBlackBitPattern, "10") == 0);
+ DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0);
}
Label::Distance has_color_distance,
int first_bit,
int second_bit) {
- ASSERT(!AreAliased(object, bitmap_scratch, mask_scratch, ecx));
+ DCHECK(!AreAliased(object, bitmap_scratch, mask_scratch, ecx));
GetMarkBits(object, bitmap_scratch, mask_scratch);
void MacroAssembler::GetMarkBits(Register addr_reg,
Register bitmap_reg,
Register mask_reg) {
- ASSERT(!AreAliased(addr_reg, mask_reg, bitmap_reg, ecx));
+ DCHECK(!AreAliased(addr_reg, mask_reg, bitmap_reg, ecx));
mov(bitmap_reg, Immediate(~Page::kPageAlignmentMask));
and_(bitmap_reg, addr_reg);
mov(ecx, addr_reg);
Register mask_scratch,
Label* value_is_white_and_not_data,
Label::Distance distance) {
- ASSERT(!AreAliased(value, bitmap_scratch, mask_scratch, ecx));
+ DCHECK(!AreAliased(value, bitmap_scratch, mask_scratch, ecx));
GetMarkBits(value, bitmap_scratch, mask_scratch);
// If the value is black or grey we don't need to do anything.
- ASSERT(strcmp(Marking::kWhiteBitPattern, "00") == 0);
- ASSERT(strcmp(Marking::kBlackBitPattern, "10") == 0);
- ASSERT(strcmp(Marking::kGreyBitPattern, "11") == 0);
- ASSERT(strcmp(Marking::kImpossibleBitPattern, "01") == 0);
+ DCHECK(strcmp(Marking::kWhiteBitPattern, "00") == 0);
+ DCHECK(strcmp(Marking::kBlackBitPattern, "10") == 0);
+ DCHECK(strcmp(Marking::kGreyBitPattern, "11") == 0);
+ DCHECK(strcmp(Marking::kImpossibleBitPattern, "01") == 0);
Label done;
bind(¬_heap_number);
// Check for strings.
- ASSERT(kIsIndirectStringTag == 1 && kIsIndirectStringMask == 1);
- ASSERT(kNotStringTag == 0x80 && kIsNotStringMask == 0x80);
+ DCHECK(kIsIndirectStringTag == 1 && kIsIndirectStringMask == 1);
+ DCHECK(kNotStringTag == 0x80 && kIsNotStringMask == 0x80);
// If it's a string and it's not a cons string then it's an object containing
// no GC pointers.
Register instance_type = ecx;
Label not_external;
// External strings are the only ones with the kExternalStringTag bit
// set.
- ASSERT_EQ(0, kSeqStringTag & kExternalStringTag);
- ASSERT_EQ(0, kConsStringTag & kExternalStringTag);
+ DCHECK_EQ(0, kSeqStringTag & kExternalStringTag);
+ DCHECK_EQ(0, kConsStringTag & kExternalStringTag);
test_b(instance_type, kExternalStringTag);
j(zero, ¬_external, Label::kNear);
mov(length, Immediate(ExternalString::kSize));
bind(¬_external);
// Sequential string, either ASCII or UC16.
- ASSERT(kOneByteStringTag == 0x04);
+ DCHECK(kOneByteStringTag == 0x04);
and_(length, Immediate(kStringEncodingMask));
xor_(length, Immediate(kStringEncodingMask));
add(length, Immediate(0x04));
// Value now either 4 (if ASCII) or 8 (if UC16), i.e., char-size shifted
// by 2. If we multiply the string length as smi by this, it still
// won't overflow a 32-bit value.
- ASSERT_EQ(SeqOneByteString::kMaxSize, SeqTwoByteString::kMaxSize);
- ASSERT(SeqOneByteString::kMaxSize <=
+ DCHECK_EQ(SeqOneByteString::kMaxSize, SeqTwoByteString::kMaxSize);
+ DCHECK(SeqOneByteString::kMaxSize <=
static_cast<int>(0xffffffffu >> (2 + kSmiTagSize)));
imul(length, FieldOperand(value, String::kLengthOffset));
shr(length, 2 + kSmiTagSize + kSmiShiftSize);
void MacroAssembler::EnumLength(Register dst, Register map) {
STATIC_ASSERT(Map::EnumLengthBits::kShift == 0);
mov(dst, FieldOperand(map, Map::kBitField3Offset));
- and_(dst, Immediate(Smi::FromInt(Map::EnumLengthBits::kMask)));
+ and_(dst, Immediate(Map::EnumLengthBits::kMask));
+ SmiTag(dst);
}
Register scratch0,
Register scratch1,
Label* found) {
- ASSERT(!scratch1.is(scratch0));
+ DCHECK(!scratch1.is(scratch0));
Factory* factory = isolate()->factory();
Register current = scratch0;
Label loop_again;
bind(&loop_again);
mov(current, FieldOperand(current, HeapObject::kMapOffset));
mov(scratch1, FieldOperand(current, Map::kBitField2Offset));
- and_(scratch1, Map::kElementsKindMask);
- shr(scratch1, Map::kElementsKindShift);
+ DecodeField<Map::ElementsKindBits>(scratch1);
cmp(scratch1, Immediate(DICTIONARY_ELEMENTS));
j(equal, found);
mov(current, FieldOperand(current, Map::kPrototypeOffset));
}
-void MacroAssembler::absps(XMMRegister dst) {
- static const struct V8_ALIGNED(16) {
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- } float_absolute_constant =
- { 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF };
- andps(dst,
- Operand(reinterpret_cast<int32_t>(&float_absolute_constant),
- RelocInfo::NONE32));
-}
-
-
-void MacroAssembler::notps(XMMRegister dst) {
- static const struct V8_ALIGNED(16) {
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- } float_not_constant =
- { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
- xorps(dst,
- Operand(reinterpret_cast<int32_t>(&float_not_constant),
- RelocInfo::NONE32));
-}
-
-
-void MacroAssembler::negateps(XMMRegister dst) {
- static const struct V8_ALIGNED(16) {
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- } float_negate_constant =
- { 0x80000000, 0x80000000, 0x80000000, 0x80000000 };
- xorps(dst,
- Operand(reinterpret_cast<int32_t>(&float_negate_constant),
- RelocInfo::NONE32));
-}
-
-
-void MacroAssembler::pnegd(XMMRegister dst) {
- static const struct V8_ALIGNED(16) {
- uint32_t a;
- uint32_t b;
- uint32_t c;
- uint32_t d;
- } int32_one_constant = { 0x1, 0x1, 0x1, 0x1 };
- notps(dst);
- paddd(dst,
- Operand(reinterpret_cast<int32_t>(&int32_one_constant),
- RelocInfo::NONE32));
+void MacroAssembler::TruncatingDiv(Register dividend, int32_t divisor) {
+ DCHECK(!dividend.is(eax));
+ DCHECK(!dividend.is(edx));
+ MultiplierAndShift ms(divisor);
+ mov(eax, Immediate(ms.multiplier()));
+ imul(dividend);
+ if (divisor > 0 && ms.multiplier() < 0) add(edx, dividend);
+ if (divisor < 0 && ms.multiplier() > 0) sub(edx, dividend);
+ if (ms.shift() > 0) sar(edx, ms.shift());
+ mov(eax, dividend);
+ shr(eax, 31);
+ add(edx, eax);
}
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