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turbo-assembler-ppc-unittest.cc
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turbo-assembler-ppc-unittest.cc
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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/codegen/macro-assembler.h"
#include "src/codegen/ppc/assembler-ppc-inl.h"
#include "src/execution/simulator.h"
#include "test/common/assembler-tester.h"
#include "test/unittests/test-utils.h"
#include "testing/gtest-support.h"
namespace v8 {
namespace internal {
#define __ tasm.
// Test the ppc 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.
class TurboAssemblerTest : public TestWithIsolate {};
TEST_F(TurboAssemblerTest, TestHardAbort) {
auto buffer = AllocateAssemblerBuffer();
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
buffer->CreateView());
__ set_root_array_available(false);
__ set_abort_hard(true);
__ Abort(AbortReason::kNoReason);
CodeDesc desc;
tasm.GetCode(isolate(), &desc);
buffer->MakeExecutable();
// We need an isolate here to execute in the simulator.
auto f = GeneratedCode<void>::FromBuffer(isolate(), buffer->start());
ASSERT_DEATH_IF_SUPPORTED({ f.Call(); }, "abort: no reason");
}
TEST_F(TurboAssemblerTest, TestCheck) {
auto buffer = AllocateAssemblerBuffer();
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
buffer->CreateView());
__ set_root_array_available(false);
__ set_abort_hard(true);
// Fail if the first parameter is 17.
__ mov(r4, Operand(17));
__ cmp(r3, r4); // 1st parameter is in {r3}.
__ Check(Condition::ne, AbortReason::kNoReason);
__ Ret();
CodeDesc desc;
tasm.GetCode(isolate(), &desc);
buffer->MakeExecutable();
// We need an isolate here to execute in the simulator.
auto f = GeneratedCode<void, int>::FromBuffer(isolate(), buffer->start());
f.Call(0);
f.Call(18);
ASSERT_DEATH_IF_SUPPORTED({ f.Call(17); }, "abort: no reason");
}
TEST_F(TurboAssemblerTest, ReverseBitsU64) {
struct {
uint64_t expected; uint64_t input;
} values[] = {
{0x0000000000000000, 0x0000000000000000},
{0xffffffffffffffff, 0xffffffffffffffff},
{0x8000000000000000, 0x0000000000000001},
{0x0000000000000001, 0x8000000000000000},
{0x800066aa22cc4488, 0x1122334455660001},
{0x1122334455660001, 0x800066aa22cc4488},
{0xffffffff00000000, 0x00000000ffffffff},
{0x00000000ffffffff, 0xffffffff00000000},
{0xff01020304050607, 0xe060a020c04080ff},
{0xe060a020c04080ff, 0xff01020304050607},
};
auto buffer = AllocateAssemblerBuffer();
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
buffer->CreateView());
__ set_root_array_available(false);
__ set_abort_hard(true);
__ Push(r4, r5);
__ ReverseBitsU64(r3, r3, r4, r5);
__ Pop(r4, r5);
__ Ret();
CodeDesc desc;
tasm.GetCode(isolate(), &desc);
buffer->MakeExecutable();
auto f = GeneratedCode<uint64_t, uint64_t>::FromBuffer(isolate(),
buffer->start());
for (unsigned int i=0; i < (sizeof(values) / sizeof(values[0])); i++) {
CHECK_EQ(values[i].expected, f.Call(values[i].input));
}
}
TEST_F(TurboAssemblerTest, ReverseBitsU32) {
struct {
uint64_t expected; uint64_t input;
} values[] = {
{0x00000000, 0x00000000},
{0xffffffff, 0xffffffff},
{0x00000001, 0x80000000},
{0x80000000, 0x00000001},
{0x22334455, 0xaa22cc44},
{0xaa22cc44, 0x22334455},
};
auto buffer = AllocateAssemblerBuffer();
TurboAssembler tasm(isolate(), AssemblerOptions{}, CodeObjectRequired::kNo,
buffer->CreateView());
__ set_root_array_available(false);
__ set_abort_hard(true);
__ Push(r4, r5);
__ ReverseBitsU32(r3, r3, r4, r5);
__ Pop(r4, r5);
__ Ret();
CodeDesc desc;
tasm.GetCode(isolate(), &desc);
buffer->MakeExecutable();
auto f = GeneratedCode<uint64_t, uint64_t>::FromBuffer(isolate(),
buffer->start());
for (unsigned int i=0; i < (sizeof(values) / sizeof(values[0])); i++) {
CHECK_EQ(values[i].expected, f.Call(values[i].input));
}
}
#undef __
} // namespace internal
} // namespace v8