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451 lines
11 KiB
451 lines
11 KiB
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "src/v8.h"
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#include "src/base/platform/platform.h"
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#include "src/base/utils/random-number-generator.h"
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#include "src/disassembler.h"
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#include "src/factory.h"
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#include "src/macro-assembler.h"
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#include "src/ostreams.h"
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#include "test/cctest/cctest.h"
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using namespace v8::internal;
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typedef int (*F0)();
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typedef int (*F1)(int x);
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typedef int (*F2)(int x, int y);
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#define __ assm.
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TEST(AssemblerIa320) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[256];
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Assembler assm(isolate, buffer, sizeof buffer);
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__ mov(eax, Operand(esp, 4));
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__ add(eax, Operand(esp, 8));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F2 f = FUNCTION_CAST<F2>(code->entry());
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int res = f(3, 4);
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::printf("f() = %d\n", res);
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CHECK_EQ(7, res);
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}
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TEST(AssemblerIa321) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[256];
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Assembler assm(isolate, buffer, sizeof buffer);
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Label L, C;
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__ mov(edx, Operand(esp, 4));
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__ xor_(eax, eax); // clear eax
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__ jmp(&C);
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__ bind(&L);
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__ add(eax, edx);
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__ sub(edx, Immediate(1));
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__ bind(&C);
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__ test(edx, edx);
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__ j(not_zero, &L);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F1 f = FUNCTION_CAST<F1>(code->entry());
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int res = f(100);
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::printf("f() = %d\n", res);
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CHECK_EQ(5050, res);
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}
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TEST(AssemblerIa322) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[256];
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Assembler assm(isolate, buffer, sizeof buffer);
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Label L, C;
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__ mov(edx, Operand(esp, 4));
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__ mov(eax, 1);
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__ jmp(&C);
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__ bind(&L);
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__ imul(eax, edx);
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__ sub(edx, Immediate(1));
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__ bind(&C);
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__ test(edx, edx);
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__ j(not_zero, &L);
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__ ret(0);
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// some relocated stuff here, not executed
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__ mov(eax, isolate->factory()->true_value());
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__ jmp(NULL, RelocInfo::RUNTIME_ENTRY);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F1 f = FUNCTION_CAST<F1>(code->entry());
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int res = f(10);
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::printf("f() = %d\n", res);
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CHECK_EQ(3628800, res);
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}
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typedef int (*F3)(float x);
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typedef int (*F4)(double x);
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static int baz = 42;
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TEST(AssemblerIa325) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[256];
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Assembler assm(isolate, buffer, sizeof buffer);
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__ mov(eax, Operand(reinterpret_cast<intptr_t>(&baz), RelocInfo::NONE32));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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F0 f = FUNCTION_CAST<F0>(code->entry());
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int res = f();
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CHECK_EQ(42, res);
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}
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typedef int (*F7)(double x, double y);
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TEST(AssemblerIa329) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[256];
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MacroAssembler assm(isolate, buffer, sizeof(buffer),
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v8::internal::CodeObjectRequired::kYes);
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enum { kEqual = 0, kGreater = 1, kLess = 2, kNaN = 3, kUndefined = 4 };
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Label equal_l, less_l, greater_l, nan_l;
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__ fld_d(Operand(esp, 3 * kPointerSize));
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__ fld_d(Operand(esp, 1 * kPointerSize));
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__ FCmp();
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__ j(parity_even, &nan_l);
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__ j(equal, &equal_l);
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__ j(below, &less_l);
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__ j(above, &greater_l);
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__ mov(eax, kUndefined);
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__ ret(0);
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__ bind(&equal_l);
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__ mov(eax, kEqual);
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__ ret(0);
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__ bind(&greater_l);
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__ mov(eax, kGreater);
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__ ret(0);
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__ bind(&less_l);
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__ mov(eax, kLess);
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__ ret(0);
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__ bind(&nan_l);
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__ mov(eax, kNaN);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F7 f = FUNCTION_CAST<F7>(code->entry());
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CHECK_EQ(kLess, f(1.1, 2.2));
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CHECK_EQ(kEqual, f(2.2, 2.2));
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CHECK_EQ(kGreater, f(3.3, 2.2));
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CHECK_EQ(kNaN, f(std::numeric_limits<double>::quiet_NaN(), 1.1));
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}
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TEST(AssemblerIa3210) {
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// Test chaining of label usages within instructions (issue 1644).
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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Assembler assm(isolate, NULL, 0);
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Label target;
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__ j(equal, &target);
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__ j(not_equal, &target);
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__ bind(&target);
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__ nop();
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}
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TEST(AssemblerMultiByteNop) {
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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v8::internal::byte buffer[1024];
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Assembler assm(isolate, buffer, sizeof(buffer));
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__ push(ebx);
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__ push(ecx);
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__ push(edx);
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__ push(edi);
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__ push(esi);
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__ mov(eax, 1);
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__ mov(ebx, 2);
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__ mov(ecx, 3);
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__ mov(edx, 4);
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__ mov(edi, 5);
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__ mov(esi, 6);
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for (int i = 0; i < 16; i++) {
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int before = assm.pc_offset();
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__ Nop(i);
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CHECK_EQ(assm.pc_offset() - before, i);
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}
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Label fail;
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__ cmp(eax, 1);
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__ j(not_equal, &fail);
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__ cmp(ebx, 2);
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__ j(not_equal, &fail);
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__ cmp(ecx, 3);
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__ j(not_equal, &fail);
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__ cmp(edx, 4);
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__ j(not_equal, &fail);
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__ cmp(edi, 5);
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__ j(not_equal, &fail);
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__ cmp(esi, 6);
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__ j(not_equal, &fail);
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__ mov(eax, 42);
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__ pop(esi);
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__ pop(edi);
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__ pop(edx);
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__ pop(ecx);
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__ pop(ebx);
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__ ret(0);
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__ bind(&fail);
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__ mov(eax, 13);
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__ pop(esi);
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__ pop(edi);
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__ pop(edx);
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__ pop(ecx);
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__ pop(ebx);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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CHECK(code->IsCode());
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F0 f = FUNCTION_CAST<F0>(code->entry());
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int res = f();
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CHECK_EQ(42, res);
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}
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TEST(AssemblerIa32JumpTables1) {
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// Test jump tables with forward jumps.
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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Assembler assm(isolate, nullptr, 0);
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const int kNumCases = 512;
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int values[kNumCases];
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isolate->random_number_generator()->NextBytes(values, sizeof(values));
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Label labels[kNumCases];
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Label done, table;
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__ mov(eax, Operand(esp, 4));
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__ jmp(Operand::JumpTable(eax, times_4, &table));
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__ ud2();
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__ bind(&table);
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for (int i = 0; i < kNumCases; ++i) {
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__ dd(&labels[i]);
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}
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for (int i = 0; i < kNumCases; ++i) {
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__ bind(&labels[i]);
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__ mov(eax, Immediate(values[i]));
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__ jmp(&done);
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}
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__ bind(&done);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F1 f = FUNCTION_CAST<F1>(code->entry());
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for (int i = 0; i < kNumCases; ++i) {
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int res = f(i);
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::printf("f(%d) = %d\n", i, res);
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CHECK_EQ(values[i], res);
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}
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}
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TEST(AssemblerIa32JumpTables2) {
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// Test jump tables with backward jumps.
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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Assembler assm(isolate, nullptr, 0);
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const int kNumCases = 512;
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int values[kNumCases];
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isolate->random_number_generator()->NextBytes(values, sizeof(values));
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Label labels[kNumCases];
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Label done, table;
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__ mov(eax, Operand(esp, 4));
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__ jmp(Operand::JumpTable(eax, times_4, &table));
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__ ud2();
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for (int i = 0; i < kNumCases; ++i) {
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__ bind(&labels[i]);
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__ mov(eax, Immediate(values[i]));
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__ jmp(&done);
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}
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__ bind(&table);
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for (int i = 0; i < kNumCases; ++i) {
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__ dd(&labels[i]);
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}
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__ bind(&done);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F1 f = FUNCTION_CAST<F1>(code->entry());
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for (int i = 0; i < kNumCases; ++i) {
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int res = f(i);
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::printf("f(%d) = %d\n", i, res);
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CHECK_EQ(values[i], res);
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}
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}
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TEST(Regress621926) {
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// Bug description:
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// The opcodes for cmpw r/m16, r16 and cmpw r16, r/m16 were swapped.
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// This was causing non-commutative comparisons to produce the wrong result.
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CcTest::InitializeVM();
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Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
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HandleScope scope(isolate);
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Assembler assm(isolate, nullptr, 0);
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uint16_t a = 42;
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Label fail;
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__ push(ebx);
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__ mov(ebx, Immediate(reinterpret_cast<intptr_t>(&a)));
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__ mov(eax, Immediate(41));
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__ cmpw(eax, Operand(ebx, 0));
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__ j(above_equal, &fail);
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__ cmpw(Operand(ebx, 0), eax);
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__ j(below_equal, &fail);
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__ mov(eax, 1);
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__ pop(ebx);
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__ ret(0);
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__ bind(&fail);
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__ mov(eax, 0);
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__ pop(ebx);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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#ifdef OBJECT_PRINT
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OFStream os(stdout);
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code->Print(os);
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#endif
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F0 f = FUNCTION_CAST<F0>(code->entry());
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CHECK_EQ(f(), 1);
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}
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#undef __
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