v8/test/cctest/test-macro-assembler-mips64.cc
balazs.kilvady 48995988a9 MIPS64: Fix BlockTrampolinePoolFor() to emit trampoline before blocking, if needed.
Port f0d1106a3f

Fixes possible failure in AssembleArchTableSwitch().

BUG=v8:4294
LOG=y

Review URL: https://codereview.chromium.org/1235883004

Cr-Commit-Position: refs/heads/master@{#29621}
2015-07-13 18:26:33 +00:00

307 lines
8.7 KiB
C++

// Copyright 2013 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 <iostream> // NOLINT(readability/streams)
#include "src/v8.h"
#include "test/cctest/cctest.h"
#include "src/base/utils/random-number-generator.h"
#include "src/macro-assembler.h"
#include "src/mips64/macro-assembler-mips64.h"
#include "src/mips64/simulator-mips64.h"
using namespace v8::internal;
typedef void* (*F)(int64_t x, int64_t y, int p2, int p3, int p4);
typedef Object* (*F1)(int x, int p1, int p2, int p3, int p4);
#define __ masm->
static byte to_non_zero(int n) {
return static_cast<unsigned>(n) % 255 + 1;
}
static bool all_zeroes(const byte* beg, const byte* end) {
CHECK(beg);
CHECK(beg <= end);
while (beg < end) {
if (*beg++ != 0)
return false;
}
return true;
}
TEST(CopyBytes) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
HandleScope handles(isolate);
const int data_size = 1 * KB;
size_t act_size;
// Allocate two blocks to copy data between.
byte* src_buffer =
static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
CHECK(src_buffer);
CHECK(act_size >= static_cast<size_t>(data_size));
byte* dest_buffer =
static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
CHECK(dest_buffer);
CHECK(act_size >= static_cast<size_t>(data_size));
// Storage for a0 and a1.
byte* a0_;
byte* a1_;
MacroAssembler assembler(isolate, NULL, 0);
MacroAssembler* masm = &assembler;
// Code to be generated: The stuff in CopyBytes followed by a store of a0 and
// a1, respectively.
__ CopyBytes(a0, a1, a2, a3);
__ li(a2, Operand(reinterpret_cast<int64_t>(&a0_)));
__ li(a3, Operand(reinterpret_cast<int64_t>(&a1_)));
__ sd(a0, MemOperand(a2));
__ jr(ra);
__ sd(a1, MemOperand(a3));
CodeDesc desc;
masm->GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
::F f = FUNCTION_CAST< ::F>(code->entry());
// Initialise source data with non-zero bytes.
for (int i = 0; i < data_size; i++) {
src_buffer[i] = to_non_zero(i);
}
const int fuzz = 11;
for (int size = 0; size < 600; size++) {
for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) {
for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) {
memset(dest_buffer, 0, data_size);
CHECK(dest + size < dest_buffer + data_size);
(void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(src),
reinterpret_cast<int64_t>(dest),
size, 0, 0);
// a0 and a1 should point at the first byte after the copied data.
CHECK_EQ(src + size, a0_);
CHECK_EQ(dest + size, a1_);
// Check that we haven't written outside the target area.
CHECK(all_zeroes(dest_buffer, dest));
CHECK(all_zeroes(dest + size, dest_buffer + data_size));
// Check the target area.
CHECK_EQ(0, memcmp(src, dest, size));
}
}
}
// Check that the source data hasn't been clobbered.
for (int i = 0; i < data_size; i++) {
CHECK(src_buffer[i] == to_non_zero(i));
}
}
TEST(LoadConstants) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
HandleScope handles(isolate);
int64_t refConstants[64];
int64_t result[64];
int64_t mask = 1;
for (int i = 0; i < 64; i++) {
refConstants[i] = ~(mask << i);
}
MacroAssembler assembler(isolate, NULL, 0);
MacroAssembler* masm = &assembler;
__ mov(a4, a0);
for (int i = 0; i < 64; i++) {
// Load constant.
__ li(a5, Operand(refConstants[i]));
__ sd(a5, MemOperand(a4));
__ Daddu(a4, a4, Operand(kPointerSize));
}
__ jr(ra);
__ nop();
CodeDesc desc;
masm->GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
::F f = FUNCTION_CAST< ::F>(code->entry());
(void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(result),
0, 0, 0, 0);
// Check results.
for (int i = 0; i < 64; i++) {
CHECK(refConstants[i] == result[i]);
}
}
TEST(LoadAddress) {
CcTest::InitializeVM();
Isolate* isolate = Isolate::Current();
HandleScope handles(isolate);
MacroAssembler assembler(isolate, NULL, 0);
MacroAssembler* masm = &assembler;
Label to_jump, skip;
__ mov(a4, a0);
__ Branch(&skip);
__ bind(&to_jump);
__ nop();
__ nop();
__ jr(ra);
__ nop();
__ bind(&skip);
__ li(a4, Operand(masm->jump_address(&to_jump)), ADDRESS_LOAD);
int check_size = masm->InstructionsGeneratedSince(&skip);
CHECK_EQ(check_size, 4);
__ jr(a4);
__ nop();
__ stop("invalid");
__ stop("invalid");
__ stop("invalid");
__ stop("invalid");
__ stop("invalid");
CodeDesc desc;
masm->GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
::F f = FUNCTION_CAST< ::F>(code->entry());
(void) CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0);
// Check results.
}
TEST(jump_tables4) {
// Similar to test-assembler-mips jump_tables1, with extra test for branch
// trampoline required before emission of the dd table (where trampolines are
// blocked), and proper transition to long-branch mode.
// Regression test for v8:4294.
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
HandleScope scope(isolate);
MacroAssembler assembler(isolate, NULL, 0);
MacroAssembler* masm = &assembler;
const int kNumCases = 512;
int values[kNumCases];
isolate->random_number_generator()->NextBytes(values, sizeof(values));
Label labels[kNumCases];
Label near_start, end;
__ daddiu(sp, sp, -8);
__ sd(ra, MemOperand(sp));
if ((masm->pc_offset() & 7) == 0) {
__ nop();
}
__ mov(v0, zero_reg);
__ Branch(&end);
__ bind(&near_start);
// Generate slightly less than 32K instructions, which will soon require
// trampoline for branch distance fixup.
for (int i = 0; i < 32768 - 256; ++i) {
__ addiu(v0, v0, 1);
}
Label done;
{
__ BlockTrampolinePoolFor(kNumCases * 2 + 6);
PredictableCodeSizeScope predictable(
masm, (kNumCases * 2 + 6) * Assembler::kInstrSize);
Label here;
__ bal(&here);
__ dsll(at, a0, 3); // In delay slot.
__ bind(&here);
__ daddu(at, at, ra);
__ ld(at, MemOperand(at, 4 * Assembler::kInstrSize));
__ jr(at);
__ nop(); // Branch delay slot nop.
for (int i = 0; i < kNumCases; ++i) {
__ dd(&labels[i]);
}
}
for (int i = 0; i < kNumCases; ++i) {
__ bind(&labels[i]);
__ lui(v0, (values[i] >> 16) & 0xffff);
__ ori(v0, v0, values[i] & 0xffff);
__ Branch(&done);
}
__ bind(&done);
__ ld(ra, MemOperand(sp));
__ daddiu(sp, sp, 8);
__ jr(ra);
__ nop();
__ bind(&end);
__ Branch(&near_start);
CodeDesc desc;
masm->GetCode(&desc);
Handle<Code> code = isolate->factory()->NewCode(
desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
#ifdef OBJECT_PRINT
code->Print(std::cout);
#endif
F1 f = FUNCTION_CAST<F1>(code->entry());
for (int i = 0; i < kNumCases; ++i) {
int64_t res =
reinterpret_cast<int64_t>(CALL_GENERATED_CODE(f, i, 0, 0, 0, 0));
::printf("f(%d) = %" PRId64 "\n", i, res);
CHECK_EQ(values[i], res);
}
}
#undef __