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therubyracer/ext/v8/upstream/2.0.6/test/cctest/test-macro-assembler-x64.cc
Charles Lowell 205c52c5bf import v8 source 
move v8 src to google dir

moving v8 source into main extension

move google upstream source dir into v8 ext dir

include v8 library in generated bundle

prep for 0.4.7

roll the upstream build into the main extension build

Documentation was confusing the gem packager.

simplify build instructions with bundled v8.

Only install scons and build v8 if it has not been built already.

Missing CVS.py from the scons library due to ignore patterns.

Don't need libv8 anymore, only python 2.5 which is required to build it.
2010-02-04 13:41:54 -06:00

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// Copyright 2009 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 <stdlib.h>
#include "v8.h"
#include "macro-assembler.h"
#include "factory.h"
#include "platform.h"
#include "serialize.h"
#include "cctest.h"
using v8::internal::byte;
using v8::internal::OS;
using v8::internal::Assembler;
using v8::internal::Condition;
using v8::internal::MacroAssembler;
using v8::internal::HandleScope;
using v8::internal::Operand;
using v8::internal::Immediate;
using v8::internal::SmiIndex;
using v8::internal::Label;
using v8::internal::RelocInfo;
using v8::internal::rax;
using v8::internal::rbx;
using v8::internal::rsi;
using v8::internal::rdi;
using v8::internal::rcx;
using v8::internal::rdx;
using v8::internal::rbp;
using v8::internal::rsp;
using v8::internal::r8;
using v8::internal::r9;
using v8::internal::r11;
using v8::internal::r12; // Remember: r12..r15 are callee save!
using v8::internal::r13;
using v8::internal::r14;
using v8::internal::r15;
using v8::internal::FUNCTION_CAST;
using v8::internal::CodeDesc;
using v8::internal::less_equal;
using v8::internal::not_equal;
using v8::internal::not_zero;
using v8::internal::greater;
using v8::internal::greater_equal;
using v8::internal::carry;
using v8::internal::not_carry;
using v8::internal::negative;
using v8::internal::positive;
using v8::internal::Smi;
using v8::internal::kSmiTagMask;
using v8::internal::kSmiValueSize;
// Test the x64 assembler by compiling some simple functions into
// a buffer and executing them. These tests do not initialize the
// V8 library, create a context, or use any V8 objects.
// The AMD64 calling convention is used, with the first five arguments
// in RSI, RDI, RDX, RCX, R8, and R9, and floating point arguments in
// the XMM registers. The return value is in RAX.
// This calling convention is used on Linux, with GCC, and on Mac OS,
// with GCC. A different convention is used on 64-bit windows.
typedef int (*F0)();
#define __ masm->
TEST(Smi) {
// Check that C++ Smi operations work as expected.
int64_t test_numbers[] = {
0, 1, -1, 127, 128, -128, -129, 255, 256, -256, -257,
Smi::kMaxValue, static_cast<int64_t>(Smi::kMaxValue) + 1,
Smi::kMinValue, static_cast<int64_t>(Smi::kMinValue) - 1
};
int test_number_count = 15;
for (int i = 0; i < test_number_count; i++) {
int64_t number = test_numbers[i];
bool is_valid = Smi::IsValid(number);
bool is_in_range = number >= Smi::kMinValue && number <= Smi::kMaxValue;
CHECK_EQ(is_in_range, is_valid);
if (is_valid) {
Smi* smi_from_intptr = Smi::FromIntptr(number);
if (static_cast<int>(number) == number) { // Is a 32-bit int.
Smi* smi_from_int = Smi::FromInt(static_cast<int32_t>(number));
CHECK_EQ(smi_from_int, smi_from_intptr);
}
int64_t smi_value = smi_from_intptr->value();
CHECK_EQ(number, smi_value);
}
}
}
static void TestMoveSmi(MacroAssembler* masm, Label* exit, int id, Smi* value) {
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(0));
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(0)));
__ cmpq(rcx, rdx);
__ j(not_equal, exit);
}
// Test that we can move a Smi value literally into a register.
TEST(SmiMove) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler; // Create a pointer for the __ macro.
masm->set_allow_stub_calls(false);
Label exit;
TestMoveSmi(masm, &exit, 1, Smi::FromInt(0));
TestMoveSmi(masm, &exit, 2, Smi::FromInt(127));
TestMoveSmi(masm, &exit, 3, Smi::FromInt(128));
TestMoveSmi(masm, &exit, 4, Smi::FromInt(255));
TestMoveSmi(masm, &exit, 5, Smi::FromInt(256));
TestMoveSmi(masm, &exit, 6, Smi::FromInt(Smi::kMaxValue));
TestMoveSmi(masm, &exit, 7, Smi::FromInt(-1));
TestMoveSmi(masm, &exit, 8, Smi::FromInt(-128));
TestMoveSmi(masm, &exit, 9, Smi::FromInt(-129));
TestMoveSmi(masm, &exit, 10, Smi::FromInt(-256));
TestMoveSmi(masm, &exit, 11, Smi::FromInt(-257));
TestMoveSmi(masm, &exit, 12, Smi::FromInt(Smi::kMinValue));
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiCompare(MacroAssembler* masm, Label* exit, int id, int x, int y) {
__ Move(rcx, Smi::FromInt(x));
__ movq(r8, rcx);
__ Move(rdx, Smi::FromInt(y));
__ movq(r9, rdx);
__ SmiCompare(rcx, rdx);
if (x < y) {
__ movl(rax, Immediate(id + 1));
__ j(greater_equal, exit);
} else if (x > y) {
__ movl(rax, Immediate(id + 2));
__ j(less_equal, exit);
} else {
ASSERT_EQ(x, y);
__ movl(rax, Immediate(id + 3));
__ j(not_equal, exit);
}
__ movl(rax, Immediate(id + 4));
__ cmpq(rcx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ cmpq(rdx, r9);
__ j(not_equal, exit);
if (x != y) {
__ SmiCompare(rdx, rcx);
if (y < x) {
__ movl(rax, Immediate(id + 9));
__ j(greater_equal, exit);
} else {
ASSERT(y > x);
__ movl(rax, Immediate(id + 10));
__ j(less_equal, exit);
}
} else {
__ SmiCompare(rcx, rcx);
__ movl(rax, Immediate(id + 11));
__ j(not_equal, exit);
__ incq(rax);
__ cmpq(rcx, r8);
__ j(not_equal, exit);
}
}
// Test that we can compare smis for equality (and more).
TEST(SmiCompare) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiCompare(masm, &exit, 0x10, 0, 0);
TestSmiCompare(masm, &exit, 0x20, 0, 1);
TestSmiCompare(masm, &exit, 0x30, 1, 0);
TestSmiCompare(masm, &exit, 0x40, 1, 1);
TestSmiCompare(masm, &exit, 0x50, 0, -1);
TestSmiCompare(masm, &exit, 0x60, -1, 0);
TestSmiCompare(masm, &exit, 0x70, -1, -1);
TestSmiCompare(masm, &exit, 0x80, 0, Smi::kMinValue);
TestSmiCompare(masm, &exit, 0x90, Smi::kMinValue, 0);
TestSmiCompare(masm, &exit, 0xA0, 0, Smi::kMaxValue);
TestSmiCompare(masm, &exit, 0xB0, Smi::kMaxValue, 0);
TestSmiCompare(masm, &exit, 0xC0, -1, Smi::kMinValue);
TestSmiCompare(masm, &exit, 0xD0, Smi::kMinValue, -1);
TestSmiCompare(masm, &exit, 0xE0, -1, Smi::kMaxValue);
TestSmiCompare(masm, &exit, 0xF0, Smi::kMaxValue, -1);
TestSmiCompare(masm, &exit, 0x100, Smi::kMinValue, Smi::kMinValue);
TestSmiCompare(masm, &exit, 0x110, Smi::kMinValue, Smi::kMaxValue);
TestSmiCompare(masm, &exit, 0x120, Smi::kMaxValue, Smi::kMinValue);
TestSmiCompare(masm, &exit, 0x130, Smi::kMaxValue, Smi::kMaxValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
TEST(Integer32ToSmi) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
__ movq(rax, Immediate(1)); // Test number.
__ movl(rcx, Immediate(0));
__ Integer32ToSmi(rcx, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(0)));
__ SmiCompare(rcx, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(2)); // Test number.
__ movl(rcx, Immediate(1024));
__ Integer32ToSmi(rcx, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(1024)));
__ SmiCompare(rcx, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(3)); // Test number.
__ movl(rcx, Immediate(-1));
__ Integer32ToSmi(rcx, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(-1)));
__ SmiCompare(rcx, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(4)); // Test number.
__ movl(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(rcx, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(Smi::kMaxValue)));
__ SmiCompare(rcx, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(5)); // Test number.
__ movl(rcx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(rcx, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(Smi::kMinValue)));
__ SmiCompare(rcx, rdx);
__ j(not_equal, &exit);
// Different target register.
__ movq(rax, Immediate(6)); // Test number.
__ movl(rcx, Immediate(0));
__ Integer32ToSmi(r8, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(0)));
__ SmiCompare(r8, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(7)); // Test number.
__ movl(rcx, Immediate(1024));
__ Integer32ToSmi(r8, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(1024)));
__ SmiCompare(r8, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(8)); // Test number.
__ movl(rcx, Immediate(-1));
__ Integer32ToSmi(r8, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(-1)));
__ SmiCompare(r8, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(9)); // Test number.
__ movl(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(r8, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(Smi::kMaxValue)));
__ SmiCompare(r8, rdx);
__ j(not_equal, &exit);
__ movq(rax, Immediate(10)); // Test number.
__ movl(rcx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(r8, rcx);
__ Set(rdx, reinterpret_cast<intptr_t>(Smi::FromInt(Smi::kMinValue)));
__ SmiCompare(r8, rdx);
__ j(not_equal, &exit);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestI64PlusConstantToSmi(MacroAssembler* masm,
Label* exit,
int id,
int64_t x,
int y) {
int64_t result = x + y;
ASSERT(Smi::IsValid(result));
__ movl(rax, Immediate(id));
__ Move(r8, Smi::FromInt(static_cast<int>(result)));
__ movq(rcx, x, RelocInfo::NONE);
__ movq(r11, rcx);
__ Integer64PlusConstantToSmi(rdx, rcx, y);
__ SmiCompare(rdx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ Integer64PlusConstantToSmi(rcx, rcx, y);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
}
TEST(Integer64PlusConstantToSmi) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
int64_t twice_max = static_cast<int64_t>(Smi::kMaxValue) * 2;
TestI64PlusConstantToSmi(masm, &exit, 0x10, 0, 0);
TestI64PlusConstantToSmi(masm, &exit, 0x20, 0, 1);
TestI64PlusConstantToSmi(masm, &exit, 0x30, 1, 0);
TestI64PlusConstantToSmi(masm, &exit, 0x40, Smi::kMaxValue - 5, 5);
TestI64PlusConstantToSmi(masm, &exit, 0x50, Smi::kMinValue + 5, 5);
TestI64PlusConstantToSmi(masm, &exit, 0x60, twice_max, -Smi::kMaxValue);
TestI64PlusConstantToSmi(masm, &exit, 0x70, -twice_max, Smi::kMaxValue);
TestI64PlusConstantToSmi(masm, &exit, 0x80, 0, Smi::kMinValue);
TestI64PlusConstantToSmi(masm, &exit, 0x90, 0, Smi::kMaxValue);
TestI64PlusConstantToSmi(masm, &exit, 0xA0, Smi::kMinValue, 0);
TestI64PlusConstantToSmi(masm, &exit, 0xB0, Smi::kMaxValue, 0);
TestI64PlusConstantToSmi(masm, &exit, 0xC0, twice_max, Smi::kMinValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
TEST(SmiCheck) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
Condition cond;
__ movl(rax, Immediate(1)); // Test number.
// CheckSmi
__ movl(rcx, Immediate(0));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckSmi(rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckSmi(rcx);
__ j(cond, &exit);
__ incq(rax);
__ movl(rcx, Immediate(-1));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckSmi(rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckSmi(rcx);
__ j(cond, &exit);
__ incq(rax);
__ movl(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckSmi(rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckSmi(rcx);
__ j(cond, &exit);
__ incq(rax);
__ movl(rcx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckSmi(rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckSmi(rcx);
__ j(cond, &exit);
// CheckPositiveSmi
__ incq(rax);
__ movl(rcx, Immediate(0));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckPositiveSmi(rcx); // Zero counts as positive.
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckPositiveSmi(rcx); // "zero" non-smi.
__ j(cond, &exit);
__ incq(rax);
__ movq(rcx, Immediate(-1));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckPositiveSmi(rcx); // Negative smis are not positive.
__ j(cond, &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckPositiveSmi(rcx); // Most negative smi is not positive.
__ j(cond, &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckPositiveSmi(rcx); // "Negative" non-smi.
__ j(cond, &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckPositiveSmi(rcx); // Most positive smi is positive.
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckPositiveSmi(rcx); // "Positive" non-smi.
__ j(cond, &exit);
// CheckIsMinSmi
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckIsMinSmi(rcx);
__ j(cond, &exit);
__ incq(rax);
__ movq(rcx, Immediate(0));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckIsMinSmi(rcx);
__ j(cond, &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckIsMinSmi(rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMinValue + 1));
__ Integer32ToSmi(rcx, rcx);
cond = masm->CheckIsMinSmi(rcx);
__ j(cond, &exit);
// CheckBothSmi
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMaxValue));
__ Integer32ToSmi(rcx, rcx);
__ movq(rdx, Immediate(Smi::kMinValue));
__ Integer32ToSmi(rdx, rdx);
cond = masm->CheckBothSmi(rcx, rdx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckBothSmi(rcx, rdx);
__ j(cond, &exit);
__ incq(rax);
__ xor_(rdx, Immediate(kSmiTagMask));
cond = masm->CheckBothSmi(rcx, rdx);
__ j(cond, &exit);
__ incq(rax);
__ xor_(rcx, Immediate(kSmiTagMask));
cond = masm->CheckBothSmi(rcx, rdx);
__ j(cond, &exit);
__ incq(rax);
cond = masm->CheckBothSmi(rcx, rcx);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
cond = masm->CheckBothSmi(rdx, rdx);
__ j(cond, &exit);
// CheckInteger32ValidSmiValue
__ incq(rax);
__ movq(rcx, Immediate(0));
cond = masm->CheckInteger32ValidSmiValue(rax);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ movq(rcx, Immediate(-1));
cond = masm->CheckInteger32ValidSmiValue(rax);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMaxValue));
cond = masm->CheckInteger32ValidSmiValue(rax);
__ j(NegateCondition(cond), &exit);
__ incq(rax);
__ movq(rcx, Immediate(Smi::kMinValue));
cond = masm->CheckInteger32ValidSmiValue(rax);
__ j(NegateCondition(cond), &exit);
// Success
__ xor_(rax, rax);
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiNeg(MacroAssembler* masm, Label* exit, int id, int x) {
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
if (x == Smi::kMinValue || x == 0) {
// Negation fails.
__ movl(rax, Immediate(id + 8));
__ SmiNeg(r9, rcx, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiNeg(rcx, rcx, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
} else {
Label smi_ok, smi_ok2;
int result = -x;
__ movl(rax, Immediate(id));
__ Move(r8, Smi::FromInt(result));
__ SmiNeg(r9, rcx, &smi_ok);
__ jmp(exit);
__ bind(&smi_ok);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiNeg(rcx, rcx, &smi_ok2);
__ jmp(exit);
__ bind(&smi_ok2);
__ incq(rax);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
}
}
TEST(SmiNeg) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiNeg(masm, &exit, 0x10, 0);
TestSmiNeg(masm, &exit, 0x20, 1);
TestSmiNeg(masm, &exit, 0x30, -1);
TestSmiNeg(masm, &exit, 0x40, 127);
TestSmiNeg(masm, &exit, 0x50, 65535);
TestSmiNeg(masm, &exit, 0x60, Smi::kMinValue);
TestSmiNeg(masm, &exit, 0x70, Smi::kMaxValue);
TestSmiNeg(masm, &exit, 0x80, -Smi::kMaxValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
static void SmiAddTest(MacroAssembler* masm,
Label* exit,
int id,
int first,
int second) {
__ movl(rcx, Immediate(first));
__ Integer32ToSmi(rcx, rcx);
__ movl(rdx, Immediate(second));
__ Integer32ToSmi(rdx, rdx);
__ movl(r8, Immediate(first + second));
__ Integer32ToSmi(r8, r8);
__ movl(rax, Immediate(id)); // Test number.
__ SmiAdd(r9, rcx, rdx, exit);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiAdd(rcx, rcx, rdx, exit); \
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ movl(rcx, Immediate(first));
__ Integer32ToSmi(rcx, rcx);
__ incq(rax);
__ SmiAddConstant(r9, rcx, Smi::FromInt(second));
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ SmiAddConstant(rcx, rcx, Smi::FromInt(second));
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ movl(rcx, Immediate(first));
__ Integer32ToSmi(rcx, rcx);
__ incq(rax);
__ SmiAddConstant(r9, rcx, Smi::FromInt(second), exit);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiAddConstant(rcx, rcx, Smi::FromInt(second), exit);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
}
TEST(SmiAdd) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
// No-overflow tests.
SmiAddTest(masm, &exit, 0x10, 1, 2);
SmiAddTest(masm, &exit, 0x20, 1, -2);
SmiAddTest(masm, &exit, 0x30, -1, 2);
SmiAddTest(masm, &exit, 0x40, -1, -2);
SmiAddTest(masm, &exit, 0x50, 0x1000, 0x2000);
SmiAddTest(masm, &exit, 0x60, Smi::kMinValue, 5);
SmiAddTest(masm, &exit, 0x70, Smi::kMaxValue, -5);
SmiAddTest(masm, &exit, 0x80, Smi::kMaxValue, Smi::kMinValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
static void SmiSubTest(MacroAssembler* masm,
Label* exit,
int id,
int first,
int second) {
__ Move(rcx, Smi::FromInt(first));
__ Move(rdx, Smi::FromInt(second));
__ Move(r8, Smi::FromInt(first - second));
__ movl(rax, Immediate(id)); // Test 0.
__ SmiSub(r9, rcx, rdx, exit);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax); // Test 1.
__ SmiSub(rcx, rcx, rdx, exit);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ Move(rcx, Smi::FromInt(first));
__ incq(rax); // Test 2.
__ SmiSubConstant(r9, rcx, Smi::FromInt(second));
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax); // Test 3.
__ SmiSubConstant(rcx, rcx, Smi::FromInt(second));
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ Move(rcx, Smi::FromInt(first));
__ incq(rax); // Test 4.
__ SmiSubConstant(r9, rcx, Smi::FromInt(second), exit);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax); // Test 5.
__ SmiSubConstant(rcx, rcx, Smi::FromInt(second), exit);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
}
static void SmiSubOverflowTest(MacroAssembler* masm,
Label* exit,
int id,
int x) {
// Subtracts a Smi from x so that the subtraction overflows.
ASSERT(x != -1); // Can't overflow by subtracting a Smi.
int y_max = (x < 0) ? (Smi::kMaxValue + 0) : (Smi::kMinValue + 0);
int y_min = (x < 0) ? (Smi::kMaxValue + x + 2) : (Smi::kMinValue + x);
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx); // Store original Smi value of x in r11.
__ Move(rdx, Smi::FromInt(y_min));
{
Label overflow_ok;
__ SmiSub(r9, rcx, rdx, &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
{
Label overflow_ok;
__ incq(rax);
__ SmiSub(rcx, rcx, rdx, &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
__ movq(rcx, r11);
{
Label overflow_ok;
__ incq(rax);
__ SmiSubConstant(r9, rcx, Smi::FromInt(y_min), &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
{
Label overflow_ok;
__ incq(rax);
__ SmiSubConstant(rcx, rcx, Smi::FromInt(y_min), &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
__ Move(rdx, Smi::FromInt(y_max));
{
Label overflow_ok;
__ incq(rax);
__ SmiSub(r9, rcx, rdx, &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
{
Label overflow_ok;
__ incq(rax);
__ SmiSub(rcx, rcx, rdx, &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
__ movq(rcx, r11);
{
Label overflow_ok;
__ incq(rax);
__ SmiSubConstant(r9, rcx, Smi::FromInt(y_max), &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
{
Label overflow_ok;
__ incq(rax);
__ SmiSubConstant(rcx, rcx, Smi::FromInt(y_max), &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
}
TEST(SmiSub) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
SmiSubTest(masm, &exit, 0x10, 1, 2);
SmiSubTest(masm, &exit, 0x20, 1, -2);
SmiSubTest(masm, &exit, 0x30, -1, 2);
SmiSubTest(masm, &exit, 0x40, -1, -2);
SmiSubTest(masm, &exit, 0x50, 0x1000, 0x2000);
SmiSubTest(masm, &exit, 0x60, Smi::kMinValue, -5);
SmiSubTest(masm, &exit, 0x70, Smi::kMaxValue, 5);
SmiSubTest(masm, &exit, 0x80, -Smi::kMaxValue, Smi::kMinValue);
SmiSubTest(masm, &exit, 0x90, 0, Smi::kMaxValue);
SmiSubOverflowTest(masm, &exit, 0xA0, 1);
SmiSubOverflowTest(masm, &exit, 0xB0, 1024);
SmiSubOverflowTest(masm, &exit, 0xC0, Smi::kMaxValue);
SmiSubOverflowTest(masm, &exit, 0xD0, -2);
SmiSubOverflowTest(masm, &exit, 0xE0, -42000);
SmiSubOverflowTest(masm, &exit, 0xF0, Smi::kMinValue);
SmiSubOverflowTest(masm, &exit, 0x100, 0);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiMul(MacroAssembler* masm, Label* exit, int id, int x, int y) {
int64_t result = static_cast<int64_t>(x) * static_cast<int64_t>(y);
bool negative_zero = (result == 0) && (x < 0 || y < 0);
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ Move(rdx, Smi::FromInt(y));
if (Smi::IsValid(result) && !negative_zero) {
__ movl(rax, Immediate(id));
__ Move(r8, Smi::FromIntptr(result));
__ SmiMul(r9, rcx, rdx, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiMul(rcx, rcx, rdx, exit);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
} else {
__ movl(rax, Immediate(id + 8));
Label overflow_ok, overflow_ok2;
__ SmiMul(r9, rcx, rdx, &overflow_ok);
__ jmp(exit);
__ bind(&overflow_ok);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiMul(rcx, rcx, rdx, &overflow_ok2);
__ jmp(exit);
__ bind(&overflow_ok2);
// 31-bit version doesn't preserve rcx on failure.
// __ incq(rax);
// __ SmiCompare(r11, rcx);
// __ j(not_equal, exit);
}
}
TEST(SmiMul) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiMul(masm, &exit, 0x10, 0, 0);
TestSmiMul(masm, &exit, 0x20, -1, 0);
TestSmiMul(masm, &exit, 0x30, 0, -1);
TestSmiMul(masm, &exit, 0x40, -1, -1);
TestSmiMul(masm, &exit, 0x50, 0x10000, 0x10000);
TestSmiMul(masm, &exit, 0x60, 0x10000, 0xffff);
TestSmiMul(masm, &exit, 0x70, 0x10000, 0xffff);
TestSmiMul(masm, &exit, 0x80, Smi::kMaxValue, -1);
TestSmiMul(masm, &exit, 0x90, Smi::kMaxValue, -2);
TestSmiMul(masm, &exit, 0xa0, Smi::kMaxValue, 2);
TestSmiMul(masm, &exit, 0xb0, (Smi::kMaxValue / 2), 2);
TestSmiMul(masm, &exit, 0xc0, (Smi::kMaxValue / 2) + 1, 2);
TestSmiMul(masm, &exit, 0xd0, (Smi::kMinValue / 2), 2);
TestSmiMul(masm, &exit, 0xe0, (Smi::kMinValue / 2) - 1, 2);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiDiv(MacroAssembler* masm, Label* exit, int id, int x, int y) {
bool division_by_zero = (y == 0);
bool negative_zero = (x == 0 && y < 0);
#ifdef V8_TARGET_ARCH_X64
bool overflow = (x == Smi::kMinValue && y < 0); // Safe approx. used.
#else
bool overflow = (x == Smi::kMinValue && y == -1);
#endif
bool fraction = !division_by_zero && !overflow && (x % y != 0);
__ Move(r11, Smi::FromInt(x));
__ Move(r12, Smi::FromInt(y));
if (!fraction && !overflow && !negative_zero && !division_by_zero) {
// Division succeeds
__ movq(rcx, r11);
__ movq(r15, Immediate(id));
int result = x / y;
__ Move(r8, Smi::FromInt(result));
__ SmiDiv(r9, rcx, r12, exit);
// Might have destroyed rcx and r12.
__ incq(r15);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(r15);
__ movq(rcx, r11);
__ Move(r12, Smi::FromInt(y));
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(r15);
__ SmiDiv(rcx, rcx, r12, exit);
__ incq(r15);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
} else {
// Division fails.
__ movq(r15, Immediate(id + 8));
Label fail_ok, fail_ok2;
__ movq(rcx, r11);
__ SmiDiv(r9, rcx, r12, &fail_ok);
__ jmp(exit);
__ bind(&fail_ok);
__ incq(r15);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(r15);
__ SmiDiv(rcx, rcx, r12, &fail_ok2);
__ jmp(exit);
__ bind(&fail_ok2);
__ incq(r15);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
}
TEST(SmiDiv) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
__ push(r12);
__ push(r15);
TestSmiDiv(masm, &exit, 0x10, 1, 1);
TestSmiDiv(masm, &exit, 0x20, 1, 0);
TestSmiDiv(masm, &exit, 0x30, -1, 0);
TestSmiDiv(masm, &exit, 0x40, 0, 1);
TestSmiDiv(masm, &exit, 0x50, 0, -1);
TestSmiDiv(masm, &exit, 0x60, 4, 2);
TestSmiDiv(masm, &exit, 0x70, -4, 2);
TestSmiDiv(masm, &exit, 0x80, 4, -2);
TestSmiDiv(masm, &exit, 0x90, -4, -2);
TestSmiDiv(masm, &exit, 0xa0, 3, 2);
TestSmiDiv(masm, &exit, 0xb0, 3, 4);
TestSmiDiv(masm, &exit, 0xc0, 1, Smi::kMaxValue);
TestSmiDiv(masm, &exit, 0xd0, -1, Smi::kMaxValue);
TestSmiDiv(masm, &exit, 0xe0, Smi::kMaxValue, 1);
TestSmiDiv(masm, &exit, 0xf0, Smi::kMaxValue, Smi::kMaxValue);
TestSmiDiv(masm, &exit, 0x100, Smi::kMaxValue, -Smi::kMaxValue);
TestSmiDiv(masm, &exit, 0x110, Smi::kMaxValue, -1);
TestSmiDiv(masm, &exit, 0x120, Smi::kMinValue, 1);
TestSmiDiv(masm, &exit, 0x130, Smi::kMinValue, Smi::kMinValue);
TestSmiDiv(masm, &exit, 0x140, Smi::kMinValue, -1);
__ xor_(r15, r15); // Success.
__ bind(&exit);
__ movq(rax, r15);
__ pop(r15);
__ pop(r12);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiMod(MacroAssembler* masm, Label* exit, int id, int x, int y) {
bool division_by_zero = (y == 0);
bool division_overflow = (x == Smi::kMinValue) && (y == -1);
bool fraction = !division_by_zero && !division_overflow && ((x % y) != 0);
bool negative_zero = (!fraction && x < 0);
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ Move(r12, Smi::FromInt(y));
if (!division_overflow && !negative_zero && !division_by_zero) {
// Modulo succeeds
__ movq(r15, Immediate(id));
int result = x % y;
__ Move(r8, Smi::FromInt(result));
__ SmiMod(r9, rcx, r12, exit);
__ incq(r15);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(r15);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(r15);
__ SmiMod(rcx, rcx, r12, exit);
__ incq(r15);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
} else {
// Modulo fails.
__ movq(r15, Immediate(id + 8));
Label fail_ok, fail_ok2;
__ SmiMod(r9, rcx, r12, &fail_ok);
__ jmp(exit);
__ bind(&fail_ok);
__ incq(r15);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(r15);
__ SmiMod(rcx, rcx, r12, &fail_ok2);
__ jmp(exit);
__ bind(&fail_ok2);
__ incq(r15);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
}
}
TEST(SmiMod) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
__ push(r12);
__ push(r15);
TestSmiMod(masm, &exit, 0x10, 1, 1);
TestSmiMod(masm, &exit, 0x20, 1, 0);
TestSmiMod(masm, &exit, 0x30, -1, 0);
TestSmiMod(masm, &exit, 0x40, 0, 1);
TestSmiMod(masm, &exit, 0x50, 0, -1);
TestSmiMod(masm, &exit, 0x60, 4, 2);
TestSmiMod(masm, &exit, 0x70, -4, 2);
TestSmiMod(masm, &exit, 0x80, 4, -2);
TestSmiMod(masm, &exit, 0x90, -4, -2);
TestSmiMod(masm, &exit, 0xa0, 3, 2);
TestSmiMod(masm, &exit, 0xb0, 3, 4);
TestSmiMod(masm, &exit, 0xc0, 1, Smi::kMaxValue);
TestSmiMod(masm, &exit, 0xd0, -1, Smi::kMaxValue);
TestSmiMod(masm, &exit, 0xe0, Smi::kMaxValue, 1);
TestSmiMod(masm, &exit, 0xf0, Smi::kMaxValue, Smi::kMaxValue);
TestSmiMod(masm, &exit, 0x100, Smi::kMaxValue, -Smi::kMaxValue);
TestSmiMod(masm, &exit, 0x110, Smi::kMaxValue, -1);
TestSmiMod(masm, &exit, 0x120, Smi::kMinValue, 1);
TestSmiMod(masm, &exit, 0x130, Smi::kMinValue, Smi::kMinValue);
TestSmiMod(masm, &exit, 0x140, Smi::kMinValue, -1);
__ xor_(r15, r15); // Success.
__ bind(&exit);
__ movq(rax, r15);
__ pop(r15);
__ pop(r12);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiIndex(MacroAssembler* masm, Label* exit, int id, int x) {
__ movl(rax, Immediate(id));
for (int i = 0; i < 8; i++) {
__ Move(rcx, Smi::FromInt(x));
SmiIndex index = masm->SmiToIndex(rdx, rcx, i);
ASSERT(index.reg.is(rcx) || index.reg.is(rdx));
__ shl(index.reg, Immediate(index.scale));
__ Set(r8, static_cast<intptr_t>(x) << i);
__ SmiCompare(index.reg, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rcx, Smi::FromInt(x));
index = masm->SmiToIndex(rcx, rcx, i);
ASSERT(index.reg.is(rcx));
__ shl(rcx, Immediate(index.scale));
__ Set(r8, static_cast<intptr_t>(x) << i);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rcx, Smi::FromInt(x));
index = masm->SmiToNegativeIndex(rdx, rcx, i);
ASSERT(index.reg.is(rcx) || index.reg.is(rdx));
__ shl(index.reg, Immediate(index.scale));
__ Set(r8, static_cast<intptr_t>(-x) << i);
__ SmiCompare(index.reg, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rcx, Smi::FromInt(x));
index = masm->SmiToNegativeIndex(rcx, rcx, i);
ASSERT(index.reg.is(rcx));
__ shl(rcx, Immediate(index.scale));
__ Set(r8, static_cast<intptr_t>(-x) << i);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ incq(rax);
}
}
TEST(SmiIndex) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiIndex(masm, &exit, 0x10, 0);
TestSmiIndex(masm, &exit, 0x20, 1);
TestSmiIndex(masm, &exit, 0x30, 100);
TestSmiIndex(masm, &exit, 0x40, 1000);
TestSmiIndex(masm, &exit, 0x50, Smi::kMaxValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSelectNonSmi(MacroAssembler* masm, Label* exit, int id, int x, int y) {
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(x));
__ Move(rdx, Smi::FromInt(y));
__ xor_(rdx, Immediate(kSmiTagMask));
__ SelectNonSmi(r9, rcx, rdx, exit);
__ incq(rax);
__ SmiCompare(r9, rdx);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rcx, Smi::FromInt(x));
__ Move(rdx, Smi::FromInt(y));
__ xor_(rcx, Immediate(kSmiTagMask));
__ SelectNonSmi(r9, rcx, rdx, exit);
__ incq(rax);
__ SmiCompare(r9, rcx);
__ j(not_equal, exit);
__ incq(rax);
Label fail_ok;
__ Move(rcx, Smi::FromInt(x));
__ Move(rdx, Smi::FromInt(y));
__ xor_(rcx, Immediate(kSmiTagMask));
__ xor_(rdx, Immediate(kSmiTagMask));
__ SelectNonSmi(r9, rcx, rdx, &fail_ok);
__ jmp(exit);
__ bind(&fail_ok);
}
TEST(SmiSelectNonSmi) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false); // Avoid inline checks.
Label exit;
TestSelectNonSmi(masm, &exit, 0x10, 0, 0);
TestSelectNonSmi(masm, &exit, 0x20, 0, 1);
TestSelectNonSmi(masm, &exit, 0x30, 1, 0);
TestSelectNonSmi(masm, &exit, 0x40, 0, -1);
TestSelectNonSmi(masm, &exit, 0x50, -1, 0);
TestSelectNonSmi(masm, &exit, 0x60, -1, -1);
TestSelectNonSmi(masm, &exit, 0x70, 1, 1);
TestSelectNonSmi(masm, &exit, 0x80, Smi::kMinValue, Smi::kMaxValue);
TestSelectNonSmi(masm, &exit, 0x90, Smi::kMinValue, Smi::kMinValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiAnd(MacroAssembler* masm, Label* exit, int id, int x, int y) {
int result = x & y;
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ Move(rdx, Smi::FromInt(y));
__ Move(r8, Smi::FromInt(result));
__ SmiAnd(r9, rcx, rdx);
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiAnd(rcx, rcx, rdx);
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
__ movq(rcx, r11);
__ incq(rax);
__ SmiAndConstant(r9, rcx, Smi::FromInt(y));
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiAndConstant(rcx, rcx, Smi::FromInt(y));
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
}
TEST(SmiAnd) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiAnd(masm, &exit, 0x10, 0, 0);
TestSmiAnd(masm, &exit, 0x20, 0, 1);
TestSmiAnd(masm, &exit, 0x30, 1, 0);
TestSmiAnd(masm, &exit, 0x40, 0, -1);
TestSmiAnd(masm, &exit, 0x50, -1, 0);
TestSmiAnd(masm, &exit, 0x60, -1, -1);
TestSmiAnd(masm, &exit, 0x70, 1, 1);
TestSmiAnd(masm, &exit, 0x80, Smi::kMinValue, Smi::kMaxValue);
TestSmiAnd(masm, &exit, 0x90, Smi::kMinValue, Smi::kMinValue);
TestSmiAnd(masm, &exit, 0xA0, Smi::kMinValue, -1);
TestSmiAnd(masm, &exit, 0xB0, Smi::kMinValue, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiOr(MacroAssembler* masm, Label* exit, int id, int x, int y) {
int result = x | y;
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ Move(rdx, Smi::FromInt(y));
__ Move(r8, Smi::FromInt(result));
__ SmiOr(r9, rcx, rdx);
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiOr(rcx, rcx, rdx);
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
__ movq(rcx, r11);
__ incq(rax);
__ SmiOrConstant(r9, rcx, Smi::FromInt(y));
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiOrConstant(rcx, rcx, Smi::FromInt(y));
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
}
TEST(SmiOr) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiOr(masm, &exit, 0x10, 0, 0);
TestSmiOr(masm, &exit, 0x20, 0, 1);
TestSmiOr(masm, &exit, 0x30, 1, 0);
TestSmiOr(masm, &exit, 0x40, 0, -1);
TestSmiOr(masm, &exit, 0x50, -1, 0);
TestSmiOr(masm, &exit, 0x60, -1, -1);
TestSmiOr(masm, &exit, 0x70, 1, 1);
TestSmiOr(masm, &exit, 0x80, Smi::kMinValue, Smi::kMaxValue);
TestSmiOr(masm, &exit, 0x90, Smi::kMinValue, Smi::kMinValue);
TestSmiOr(masm, &exit, 0xA0, Smi::kMinValue, -1);
TestSmiOr(masm, &exit, 0xB0, 0x05555555, 0x01234567);
TestSmiOr(masm, &exit, 0xC0, 0x05555555, 0x0fedcba9);
TestSmiOr(masm, &exit, 0xD0, Smi::kMinValue, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiXor(MacroAssembler* masm, Label* exit, int id, int x, int y) {
int result = x ^ y;
__ movl(rax, Immediate(id));
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ Move(rdx, Smi::FromInt(y));
__ Move(r8, Smi::FromInt(result));
__ SmiXor(r9, rcx, rdx);
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiXor(rcx, rcx, rdx);
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
__ movq(rcx, r11);
__ incq(rax);
__ SmiXorConstant(r9, rcx, Smi::FromInt(y));
__ SmiCompare(r8, r9);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiXorConstant(rcx, rcx, Smi::FromInt(y));
__ SmiCompare(r8, rcx);
__ j(not_equal, exit);
}
TEST(SmiXor) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiXor(masm, &exit, 0x10, 0, 0);
TestSmiXor(masm, &exit, 0x20, 0, 1);
TestSmiXor(masm, &exit, 0x30, 1, 0);
TestSmiXor(masm, &exit, 0x40, 0, -1);
TestSmiXor(masm, &exit, 0x50, -1, 0);
TestSmiXor(masm, &exit, 0x60, -1, -1);
TestSmiXor(masm, &exit, 0x70, 1, 1);
TestSmiXor(masm, &exit, 0x80, Smi::kMinValue, Smi::kMaxValue);
TestSmiXor(masm, &exit, 0x90, Smi::kMinValue, Smi::kMinValue);
TestSmiXor(masm, &exit, 0xA0, Smi::kMinValue, -1);
TestSmiXor(masm, &exit, 0xB0, 0x5555555, 0x01234567);
TestSmiXor(masm, &exit, 0xC0, 0x5555555, 0x0fedcba9);
TestSmiXor(masm, &exit, 0xD0, Smi::kMinValue, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiNot(MacroAssembler* masm, Label* exit, int id, int x) {
int result = ~x;
__ movl(rax, Immediate(id));
__ Move(r8, Smi::FromInt(result));
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ SmiNot(r9, rcx);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx);
__ j(not_equal, exit);
__ incq(rax);
__ SmiNot(rcx, rcx);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
}
TEST(SmiNot) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiNot(masm, &exit, 0x10, 0);
TestSmiNot(masm, &exit, 0x20, 1);
TestSmiNot(masm, &exit, 0x30, -1);
TestSmiNot(masm, &exit, 0x40, 127);
TestSmiNot(masm, &exit, 0x50, 65535);
TestSmiNot(masm, &exit, 0x60, Smi::kMinValue);
TestSmiNot(masm, &exit, 0x70, Smi::kMaxValue);
TestSmiNot(masm, &exit, 0x80, 0x05555555);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiShiftLeft(MacroAssembler* masm, Label* exit, int id, int x) {
const int shifts[] = { 0, 1, 7, 24, kSmiValueSize - 1};
const int kNumShifts = 5;
__ movl(rax, Immediate(id));
for (int i = 0; i < kNumShifts; i++) {
// rax == id + i * 10.
int shift = shifts[i];
int result = x << shift;
if (Smi::IsValid(result)) {
__ Move(r8, Smi::FromInt(result));
__ Move(rcx, Smi::FromInt(x));
__ SmiShiftLeftConstant(r9, rcx, shift, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rcx, Smi::FromInt(x));
__ SmiShiftLeftConstant(rcx, rcx, shift, exit);
__ incq(rax);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(rcx, Smi::FromInt(shift));
__ SmiShiftLeft(r9, rdx, rcx, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(r11, Smi::FromInt(shift));
__ SmiShiftLeft(r9, rdx, r11, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(r11, Smi::FromInt(shift));
__ SmiShiftLeft(rdx, rdx, r11, exit);
__ incq(rax);
__ SmiCompare(rdx, r8);
__ j(not_equal, exit);
__ incq(rax);
} else {
// Cannot happen with long smis.
Label fail_ok;
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ SmiShiftLeftConstant(r9, rcx, shift, &fail_ok);
__ jmp(exit);
__ bind(&fail_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(rax);
Label fail_ok2;
__ SmiShiftLeftConstant(rcx, rcx, shift, &fail_ok2);
__ jmp(exit);
__ bind(&fail_ok2);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(rax);
__ Move(r8, Smi::FromInt(shift));
Label fail_ok3;
__ SmiShiftLeft(r9, rcx, r8, &fail_ok3);
__ jmp(exit);
__ bind(&fail_ok3);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(rax);
__ Move(r8, Smi::FromInt(shift));
__ movq(rdx, r11);
Label fail_ok4;
__ SmiShiftLeft(rdx, rdx, r8, &fail_ok4);
__ jmp(exit);
__ bind(&fail_ok4);
__ incq(rax);
__ SmiCompare(rdx, r11);
__ j(not_equal, exit);
__ addq(rax, Immediate(3));
}
}
}
TEST(SmiShiftLeft) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 3,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiShiftLeft(masm, &exit, 0x10, 0);
TestSmiShiftLeft(masm, &exit, 0x50, 1);
TestSmiShiftLeft(masm, &exit, 0x90, 127);
TestSmiShiftLeft(masm, &exit, 0xD0, 65535);
TestSmiShiftLeft(masm, &exit, 0x110, Smi::kMaxValue);
TestSmiShiftLeft(masm, &exit, 0x150, Smi::kMinValue);
TestSmiShiftLeft(masm, &exit, 0x190, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiShiftLogicalRight(MacroAssembler* masm,
Label* exit,
int id,
int x) {
const int shifts[] = { 0, 1, 7, 24, kSmiValueSize - 1};
const int kNumShifts = 5;
__ movl(rax, Immediate(id));
for (int i = 0; i < kNumShifts; i++) {
int shift = shifts[i];
intptr_t result = static_cast<unsigned int>(x) >> shift;
if (Smi::IsValid(result)) {
__ Move(r8, Smi::FromInt(static_cast<int>(result)));
__ Move(rcx, Smi::FromInt(x));
__ SmiShiftLogicalRightConstant(r9, rcx, shift, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(rcx, Smi::FromInt(shift));
__ SmiShiftLogicalRight(r9, rdx, rcx, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(r11, Smi::FromInt(shift));
__ SmiShiftLogicalRight(r9, rdx, r11, exit);
__ incq(rax);
__ SmiCompare(r9, r8);
__ j(not_equal, exit);
__ incq(rax);
} else {
// Cannot happen with long smis.
Label fail_ok;
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ SmiShiftLogicalRightConstant(r9, rcx, shift, &fail_ok);
__ jmp(exit);
__ bind(&fail_ok);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ incq(rax);
__ Move(r8, Smi::FromInt(shift));
Label fail_ok3;
__ SmiShiftLogicalRight(r9, rcx, r8, &fail_ok3);
__ jmp(exit);
__ bind(&fail_ok3);
__ incq(rax);
__ SmiCompare(rcx, r11);
__ j(not_equal, exit);
__ addq(rax, Immediate(3));
}
}
}
TEST(SmiShiftLogicalRight) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiShiftLogicalRight(masm, &exit, 0x10, 0);
TestSmiShiftLogicalRight(masm, &exit, 0x30, 1);
TestSmiShiftLogicalRight(masm, &exit, 0x50, 127);
TestSmiShiftLogicalRight(masm, &exit, 0x70, 65535);
TestSmiShiftLogicalRight(masm, &exit, 0x90, Smi::kMaxValue);
TestSmiShiftLogicalRight(masm, &exit, 0xB0, Smi::kMinValue);
TestSmiShiftLogicalRight(masm, &exit, 0xD0, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestSmiShiftArithmeticRight(MacroAssembler* masm,
Label* exit,
int id,
int x) {
const int shifts[] = { 0, 1, 7, 24, kSmiValueSize - 1};
const int kNumShifts = 5;
__ movl(rax, Immediate(id));
for (int i = 0; i < kNumShifts; i++) {
int shift = shifts[i];
// Guaranteed arithmetic shift.
int result = (x < 0) ? ~((~x) >> shift) : (x >> shift);
__ Move(r8, Smi::FromInt(result));
__ Move(rcx, Smi::FromInt(x));
__ SmiShiftArithmeticRightConstant(rcx, rcx, shift);
__ SmiCompare(rcx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ Move(rdx, Smi::FromInt(x));
__ Move(r11, Smi::FromInt(shift));
__ SmiShiftArithmeticRight(rdx, rdx, r11);
__ SmiCompare(rdx, r8);
__ j(not_equal, exit);
__ incq(rax);
}
}
TEST(SmiShiftArithmeticRight) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestSmiShiftArithmeticRight(masm, &exit, 0x10, 0);
TestSmiShiftArithmeticRight(masm, &exit, 0x20, 1);
TestSmiShiftArithmeticRight(masm, &exit, 0x30, 127);
TestSmiShiftArithmeticRight(masm, &exit, 0x40, 65535);
TestSmiShiftArithmeticRight(masm, &exit, 0x50, Smi::kMaxValue);
TestSmiShiftArithmeticRight(masm, &exit, 0x60, Smi::kMinValue);
TestSmiShiftArithmeticRight(masm, &exit, 0x70, -1);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
void TestPositiveSmiPowerUp(MacroAssembler* masm, Label* exit, int id, int x) {
ASSERT(x >= 0);
int powers[] = { 0, 1, 2, 3, 8, 16, 24, 31 };
int power_count = 8;
__ movl(rax, Immediate(id));
for (int i = 0; i < power_count; i++) {
int power = powers[i];
intptr_t result = static_cast<intptr_t>(x) << power;
__ Set(r8, result);
__ Move(rcx, Smi::FromInt(x));
__ movq(r11, rcx);
__ PositiveSmiTimesPowerOfTwoToInteger64(rdx, rcx, power);
__ SmiCompare(rdx, r8);
__ j(not_equal, exit);
__ incq(rax);
__ SmiCompare(r11, rcx); // rcx unchanged.
__ j(not_equal, exit);
__ incq(rax);
__ PositiveSmiTimesPowerOfTwoToInteger64(rcx, rcx, power);
__ SmiCompare(rdx, r8);
__ j(not_equal, exit);
__ incq(rax);
}
}
TEST(PositiveSmiTimesPowerOfTwoToInteger64) {
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer =
static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize * 2,
&actual_size,
true));
CHECK(buffer);
HandleScope handles;
MacroAssembler assembler(buffer, static_cast<int>(actual_size));
MacroAssembler* masm = &assembler;
masm->set_allow_stub_calls(false);
Label exit;
TestPositiveSmiPowerUp(masm, &exit, 0x20, 0);
TestPositiveSmiPowerUp(masm, &exit, 0x40, 1);
TestPositiveSmiPowerUp(masm, &exit, 0x60, 127);
TestPositiveSmiPowerUp(masm, &exit, 0x80, 128);
TestPositiveSmiPowerUp(masm, &exit, 0xA0, 255);
TestPositiveSmiPowerUp(masm, &exit, 0xC0, 256);
TestPositiveSmiPowerUp(masm, &exit, 0x100, 65535);
TestPositiveSmiPowerUp(masm, &exit, 0x120, 65536);
TestPositiveSmiPowerUp(masm, &exit, 0x140, Smi::kMaxValue);
__ xor_(rax, rax); // Success.
__ bind(&exit);
__ ret(0);
CodeDesc desc;
masm->GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(0, result);
}
#undef __
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