4084e698c3
The ARM and MIPS assemblers had a bug where they did not handle the last element in the list of code positions correctly during the fixup of offsets for forward jumps. This happened when the first instruction contained a forward jump to a label, and that label was used in a forward jump later, too. Unified the code for Assembler::next on ARM and MIPS while we were there. Added test cases, even for ia32/x64, which seem to be correct, even I don't fully understand why... %-} BUG=v8:1644 Review URL: http://codereview.chromium.org/7786001 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9063 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
412 lines
11 KiB
C++
412 lines
11 KiB
C++
// Copyright 2006-2008 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 "v8.h"
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#include "disassembler.h"
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#include "factory.h"
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#include "macro-assembler.h"
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#include "platform.h"
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#include "serialize.h"
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#include "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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static v8::Persistent<v8::Context> env;
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static void InitializeVM() {
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if (env.IsEmpty()) {
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env = v8::Context::New();
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}
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}
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#define __ assm.
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TEST(AssemblerIa320) {
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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), 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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Object* code = HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
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CHECK(code->IsCode());
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#ifdef OBJECT_PRINT
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Code::cast(code)->Print();
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#endif
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F2 f = FUNCTION_CAST<F2>(Code::cast(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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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), 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, Operand(eax)); // clear eax
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__ jmp(&C);
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__ bind(&L);
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__ add(eax, Operand(edx));
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__ sub(Operand(edx), Immediate(1));
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__ bind(&C);
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__ test(edx, Operand(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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Object* code = HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
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CHECK(code->IsCode());
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#ifdef OBJECT_PRINT
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Code::cast(code)->Print();
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#endif
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F1 f = FUNCTION_CAST<F1>(Code::cast(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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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), 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, Operand(edx));
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__ sub(Operand(edx), Immediate(1));
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__ bind(&C);
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__ test(edx, Operand(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, 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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Object* code = HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
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CHECK(code->IsCode());
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#ifdef OBJECT_PRINT
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Code::cast(code)->Print();
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#endif
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F1 f = FUNCTION_CAST<F1>(Code::cast(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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TEST(AssemblerIa323) {
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InitializeVM();
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if (!CpuFeatures::IsSupported(SSE2)) return;
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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CHECK(CpuFeatures::IsSupported(SSE2));
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{ CpuFeatures::Scope fscope(SSE2);
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__ cvttss2si(eax, Operand(esp, 4));
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__ ret(0);
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}
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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// don't print the code - our disassembler can't handle cvttss2si
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// instead print bytes
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Disassembler::Dump(stdout,
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code->instruction_start(),
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code->instruction_start() + code->instruction_size());
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F3 f = FUNCTION_CAST<F3>(code->entry());
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int res = f(static_cast<float>(-3.1415));
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::printf("f() = %d\n", res);
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CHECK_EQ(-3, res);
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}
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typedef int (*F4)(double x);
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TEST(AssemblerIa324) {
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InitializeVM();
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if (!CpuFeatures::IsSupported(SSE2)) return;
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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CHECK(CpuFeatures::IsSupported(SSE2));
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CpuFeatures::Scope fscope(SSE2);
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__ cvttsd2si(eax, Operand(esp, 4));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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// don't print the code - our disassembler can't handle cvttsd2si
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// instead print bytes
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Disassembler::Dump(stdout,
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code->instruction_start(),
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code->instruction_start() + code->instruction_size());
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F4 f = FUNCTION_CAST<F4>(code->entry());
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int res = f(2.718281828);
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::printf("f() = %d\n", res);
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CHECK_EQ(2, res);
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}
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static int baz = 42;
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TEST(AssemblerIa325) {
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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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__ mov(eax, Operand(reinterpret_cast<intptr_t>(&baz), RelocInfo::NONE));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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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 double (*F5)(double x, double y);
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TEST(AssemblerIa326) {
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InitializeVM();
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if (!CpuFeatures::IsSupported(SSE2)) return;
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v8::HandleScope scope;
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CHECK(CpuFeatures::IsSupported(SSE2));
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CpuFeatures::Scope fscope(SSE2);
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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__ movdbl(xmm0, Operand(esp, 1 * kPointerSize));
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__ movdbl(xmm1, Operand(esp, 3 * kPointerSize));
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__ addsd(xmm0, xmm1);
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__ mulsd(xmm0, xmm1);
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__ subsd(xmm0, xmm1);
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__ divsd(xmm0, xmm1);
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// Copy xmm0 to st(0) using eight bytes of stack.
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__ sub(Operand(esp), Immediate(8));
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__ movdbl(Operand(esp, 0), xmm0);
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__ fld_d(Operand(esp, 0));
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__ add(Operand(esp), Immediate(8));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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#ifdef DEBUG
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::printf("\n---\n");
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// don't print the code - our disassembler can't handle SSE instructions
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// instead print bytes
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Disassembler::Dump(stdout,
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code->instruction_start(),
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code->instruction_start() + code->instruction_size());
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#endif
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F5 f = FUNCTION_CAST<F5>(code->entry());
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double res = f(2.2, 1.1);
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::printf("f() = %f\n", res);
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CHECK(2.29 < res && res < 2.31);
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}
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typedef double (*F6)(int x);
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TEST(AssemblerIa328) {
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InitializeVM();
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if (!CpuFeatures::IsSupported(SSE2)) return;
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v8::HandleScope scope;
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CHECK(CpuFeatures::IsSupported(SSE2));
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CpuFeatures::Scope fscope(SSE2);
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v8::internal::byte buffer[256];
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Assembler assm(Isolate::Current(), buffer, sizeof buffer);
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__ mov(eax, Operand(esp, 4));
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__ cvtsi2sd(xmm0, Operand(eax));
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// Copy xmm0 to st(0) using eight bytes of stack.
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__ sub(Operand(esp), Immediate(8));
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__ movdbl(Operand(esp, 0), xmm0);
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__ fld_d(Operand(esp, 0));
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__ add(Operand(esp), Immediate(8));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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CHECK(code->IsCode());
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#ifdef OBJECT_PRINT
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Code::cast(code)->Print();
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#endif
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F6 f = FUNCTION_CAST<F6>(Code::cast(code)->entry());
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double res = f(12);
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::printf("f() = %f\n", res);
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CHECK(11.99 < res && res < 12.001);
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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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InitializeVM();
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v8::HandleScope scope;
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v8::internal::byte buffer[256];
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MacroAssembler assm(Isolate::Current(), buffer, sizeof buffer);
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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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Code* code = Code::cast(HEAP->CreateCode(
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desc,
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Code::ComputeFlags(Code::STUB),
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Handle<Object>(HEAP->undefined_value()))->ToObjectChecked());
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CHECK(code->IsCode());
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#ifdef OBJECT_PRINT
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Code::cast(code)->Print();
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#endif
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F7 f = FUNCTION_CAST<F7>(Code::cast(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(OS::nan_value(), 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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InitializeVM();
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v8::HandleScope scope;
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Assembler assm(Isolate::Current(), 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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#undef __
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