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// 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"
#include "simulator.h"
using namespace v8::internal;
#define __ masm.
ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
Register source_reg,
Register destination_reg,
bool inline_fastpath) {
// 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 masm(isolate, buffer, static_cast<int>(actual_size));
DoubleToIStub stub(source_reg, destination_reg, 0, true, inline_fastpath);
byte* start = stub.GetCode(isolate)->instruction_start();
Label done;
// Save callee save registers.
__ Push(r7, r6, r5, r4);
__ Push(lr);
// For softfp, move the input value into d0.
if (!masm.use_eabi_hardfloat()) {
__ vmov(d0, r0, r1);
}
// Push the double argument.
__ sub(sp, sp, Operand(kDoubleSize));
__ vstr(d0, sp, 0);
if (!source_reg.is(sp)) {
__ mov(source_reg, sp);
}
// Save registers make sure they don't get clobbered.
int source_reg_offset = kDoubleSize;
int reg_num = 0;
for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) {
Register reg = Register::from_code(reg_num);
if (!reg.is(destination_reg)) {
__ push(reg);
source_reg_offset += kPointerSize;
}
}
// Re-push the double argument.
__ sub(sp, sp, Operand(kDoubleSize));
__ vstr(d0, sp, 0);
// Call through to the actual stub
if (inline_fastpath) {
__ vldr(d0, MemOperand(source_reg));
__ TryInlineTruncateDoubleToI(destination_reg, d0, &done);
if (destination_reg.is(source_reg) && !source_reg.is(sp)) {
// Restore clobbered source_reg.
__ add(source_reg, sp, Operand(source_reg_offset));
}
}
__ Call(start, RelocInfo::EXTERNAL_REFERENCE);
__ bind(&done);
__ add(sp, sp, Operand(kDoubleSize));
// Make sure no registers have been unexpectedly clobbered
for (--reg_num; reg_num >= 0; --reg_num) {
Register reg = Register::from_code(reg_num);
if (!reg.is(destination_reg)) {
__ ldr(ip, MemOperand(sp, 0));
__ cmp(reg, ip);
__ Assert(eq, kRegisterWasClobbered);
__ add(sp, sp, Operand(kPointerSize));
}
}
__ add(sp, sp, Operand(kDoubleSize));
if (!destination_reg.is(r0))
__ mov(r0, destination_reg);
// Restore callee save registers.
__ Pop(lr);
__ Pop(r7, r6, r5, r4);
__ Ret(0);
CodeDesc desc;
masm.GetCode(&desc);
CPU::FlushICache(buffer, actual_size);
return (reinterpret_cast<ConvertDToIFunc>(
reinterpret_cast<intptr_t>(buffer)));
}
#undef __
static Isolate* GetIsolateFrom(LocalContext* context) {
return reinterpret_cast<Isolate*>((*context)->GetIsolate());
}
int32_t RunGeneratedCodeCallWrapper(ConvertDToIFunc func,
double from) {
#ifdef USE_SIMULATOR
return CALL_GENERATED_FP_INT(func, from, 0);
#else
return (*func)(from);
#endif
}
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[] = {sp, r0, r1, r2, r3, r4, r5, r6, r7};
Register dest_registers[] = {r0, r1, r2, r3, r4, r5, r6, r7};
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(
RunGeneratedCodeCallWrapper,
MakeConvertDToIFuncTrampoline(isolate,
source_registers[s],
dest_registers[d],
false));
RunAllTruncationTests(
RunGeneratedCodeCallWrapper,
MakeConvertDToIFuncTrampoline(isolate,
source_registers[s],
dest_registers[d],
true));
}
}
}