94b088ca3c
This is a first step towards moving Turbofan code generation off the main thread. Summary of the changes: - AssemblerBase no longer has a pointer to the isolate. Instead, its constructor receives the few things that it needs from the isolate (on most architectures this is just the serializer_enabled flag). - RelocInfo no longer has a pointer to the isolate. Instead, the functions that need it take it as an argument. (There are currently still a few that implicitly access the isolate through a HeapObject.) - The MacroAssembler now explicitly holds a pointer to the isolate (before, it used to get it from the Assembler). - The jit_cookie also moved from AssemblerBase to the MacroAssemblers, since it's not used at all in the Assemblers. - A few architectures implemented parts of the Assembler with the help of a Codepatcher that is based on MacroAssembler. Since the Assembler no longer has the isolate, but the MacroAssembler still needs it, this doesn't work anymore. Instead, these Assemblers now use a new PatchingAssembler. BUG=v8:6048 Review-Url: https://codereview.chromium.org/2732273003 Cr-Commit-Position: refs/heads/master@{#43890}
143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdlib.h>
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#include "src/v8.h"
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#include "src/debug/debug.h"
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#include "src/disasm.h"
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#include "src/disassembler.h"
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#include "src/ia32/frames-ia32.h"
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#include "src/ic/ic.h"
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#include "src/macro-assembler.h"
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#include "test/cctest/cctest.h"
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#include "test/cctest/compiler/c-signature.h"
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#include "test/cctest/compiler/call-tester.h"
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using namespace v8::internal;
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using namespace v8::internal::compiler;
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#define __ assm.
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static int32_t DummyStaticFunction(Object* result) { return 1; }
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TEST(WasmRelocationIa32MemoryReference) {
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Isolate* isolate = CcTest::i_isolate();
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Zone zone(isolate->allocator(), ZONE_NAME);
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HandleScope scope(isolate);
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v8::internal::byte buffer[4096];
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Assembler assm(isolate, buffer, sizeof buffer);
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DummyStaticFunction(NULL);
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int32_t imm = 1234567;
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__ mov(eax, Immediate(reinterpret_cast<Address>(imm),
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RelocInfo::WASM_MEMORY_REFERENCE));
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__ nop();
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__ ret(0);
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CSignature0<int32_t> csig;
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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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USE(code);
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CodeRunner<int32_t> runnable(isolate, code, &csig);
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int32_t ret_value = runnable.Call();
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CHECK_EQ(ret_value, imm);
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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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byte* begin = code->instruction_start();
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byte* end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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int offset = 1234;
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// Relocating references by offset
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int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE);
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for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
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DCHECK(RelocInfo::IsWasmMemoryReference(it.rinfo()->rmode()));
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it.rinfo()->update_wasm_memory_reference(
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isolate, it.rinfo()->wasm_memory_reference(),
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it.rinfo()->wasm_memory_reference() + offset, SKIP_ICACHE_FLUSH);
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}
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// Check if immediate is updated correctly
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ret_value = runnable.Call();
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CHECK_EQ(ret_value, imm + offset);
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#ifdef OBJECT_PRINT
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code->Print(os);
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begin = code->instruction_start();
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end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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}
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TEST(WasmRelocationIa32MemorySizeReference) {
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CcTest::InitializeVM();
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Isolate* isolate = CcTest::i_isolate();
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Zone zone(isolate->allocator(), ZONE_NAME);
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HandleScope scope(isolate);
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v8::internal::byte buffer[4096];
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Assembler assm(isolate, buffer, sizeof buffer);
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DummyStaticFunction(NULL);
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int32_t size = 80;
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Label fail;
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__ mov(eax, Immediate(reinterpret_cast<Address>(size),
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RelocInfo::WASM_MEMORY_SIZE_REFERENCE));
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__ cmp(eax, Immediate(reinterpret_cast<Address>(size),
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RelocInfo::WASM_MEMORY_SIZE_REFERENCE));
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__ j(not_equal, &fail);
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__ ret(0);
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__ bind(&fail);
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__ mov(eax, 0xdeadbeef);
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__ ret(0);
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CSignature0<int32_t> csig;
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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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USE(code);
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CodeRunner<int32_t> runnable(isolate, code, &csig);
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int32_t ret_value = runnable.Call();
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CHECK_NE(ret_value, bit_cast<int32_t>(0xdeadbeef));
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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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byte* begin = code->instruction_start();
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byte* end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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size_t offset = 10;
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int mode_mask = (1 << RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
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for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
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DCHECK(RelocInfo::IsWasmMemorySizeReference(it.rinfo()->rmode()));
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it.rinfo()->update_wasm_memory_size(
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isolate, it.rinfo()->wasm_memory_size_reference(),
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it.rinfo()->wasm_memory_size_reference() + offset, SKIP_ICACHE_FLUSH);
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}
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ret_value = runnable.Call();
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CHECK_NE(ret_value, bit_cast<int32_t>(0xdeadbeef));
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#ifdef OBJECT_PRINT
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code->Print(os);
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begin = code->instruction_start();
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end = begin + code->instruction_size();
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disasm::Disassembler::Disassemble(stdout, begin, end);
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#endif
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}
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#undef __
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