v8/test/cctest/test-code-stubs-x64.cc

153 lines
5.3 KiB
C++

// Copyright 2013 the V8 project authors. All rights reserved.
// Rrdistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Rrdistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Rrdistributions 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 "cctest.h"
#include "code-stubs.h"
#include "test-code-stubs.h"
#include "factory.h"
#include "macro-assembler.h"
#include "platform.h"
using namespace v8::internal;
#define __ assm.
ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
Register source_reg,
Register destination_reg) {
// 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(isolate);
MacroAssembler assm(isolate, buffer, static_cast<int>(actual_size));
int offset =
source_reg.is(rsp) ? 0 : (HeapNumber::kValueOffset - kSmiTagSize);
DoubleToIStub stub(source_reg, destination_reg, offset, true);
byte* start = stub.GetCode(isolate)->instruction_start();
__ pushq(rbx);
__ pushq(rcx);
__ pushq(rdx);
__ pushq(rsi);
__ pushq(rdi);
if (!source_reg.is(rsp)) {
// The argument we pass to the stub is not a heap number, but instead
// stack-allocated and offset-wise made to look like a heap number for
// the stub. We create that "heap number" after pushing all allocatable
// registers.
int double_argument_slot =
(Register::NumAllocatableRegisters() - 1) * kPointerSize + kDoubleSize;
__ lea(source_reg, MemOperand(rsp, -double_argument_slot - offset));
}
// Save registers make sure they don't get clobbered.
int reg_num = 0;
for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
Register reg = Register::FromAllocationIndex(reg_num);
if (!reg.is(rsp) && !reg.is(rbp) && !reg.is(destination_reg)) {
__ pushq(reg);
}
}
// Put the double argument into the designated double argument slot.
__ subq(rsp, Immediate(kDoubleSize));
__ movsd(MemOperand(rsp, 0), xmm0);
// Call through to the actual stub
__ Call(start, RelocInfo::EXTERNAL_REFERENCE);
__ addq(rsp, Immediate(kDoubleSize));
// Make sure no registers have been unexpectedly clobbered
for (--reg_num; reg_num >= 0; --reg_num) {
Register reg = Register::FromAllocationIndex(reg_num);
if (!reg.is(rsp) && !reg.is(rbp) && !reg.is(destination_reg)) {
__ cmpq(reg, MemOperand(rsp, 0));
__ Assert(equal, kRegisterWasClobbered);
__ addq(rsp, Immediate(kPointerSize));
}
}
__ movq(rax, destination_reg);
__ popq(rdi);
__ popq(rsi);
__ popq(rdx);
__ popq(rcx);
__ popq(rbx);
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
return reinterpret_cast<ConvertDToIFunc>(
reinterpret_cast<intptr_t>(buffer));
}
#undef __
static Isolate* GetIsolateFrom(LocalContext* context) {
return reinterpret_cast<Isolate*>((*context)->GetIsolate());
}
TEST(ConvertDToI) {
CcTest::InitializeVM();
LocalContext context;
Isolate* isolate = GetIsolateFrom(&context);
HandleScope scope(isolate);
#if DEBUG
// Verify that the tests actually work with the C version. In the release
// code, the compiler optimizes it away because it's all constant, but does it
// wrong, triggering an assert on gcc.
RunAllTruncationTests(&ConvertDToICVersion);
#endif
Register source_registers[] = {rsp, rax, rbx, rcx, rdx, rsi, rdi, r8, r9};
Register dest_registers[] = {rax, rbx, rcx, rdx, rsi, rdi, r8, r9};
for (size_t s = 0; s < sizeof(source_registers) / sizeof(Register); s++) {
for (size_t d = 0; d < sizeof(dest_registers) / sizeof(Register); d++) {
RunAllTruncationTests(
MakeConvertDToIFuncTrampoline(isolate,
source_registers[s],
dest_registers[d]));
}
}
}