// Copyright 2015 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 <stdlib.h> #include "src/v8.h" #include "src/debug/debug.h" #include "src/disasm.h" #include "src/disassembler.h" #include "src/ic/ic.h" #include "src/macro-assembler.h" #include "src/objects-inl.h" #include "src/ostreams.h" #include "test/cctest/cctest.h" #include "test/cctest/compiler/c-signature.h" #include "test/cctest/compiler/call-tester.h" using namespace v8::internal; using namespace v8::internal::compiler; #define __ assm. static int32_t DummyStaticFunction(Object* result) { return 1; } TEST(WasmRelocationX64MemoryReference) { Isolate* isolate = CcTest::i_isolate(); HandleScope scope(isolate); v8::internal::byte buffer[4096]; Assembler assm(isolate, buffer, sizeof buffer); DummyStaticFunction(NULL); int64_t imm = 1234567; __ movq(rax, imm, RelocInfo::WASM_MEMORY_REFERENCE); __ nop(); __ ret(0); CodeDesc desc; assm.GetCode(&desc); Handle<Code> code = isolate->factory()->NewCode( desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); USE(code); CSignature0<int64_t> csig; CodeRunner<int64_t> runnable(isolate, code, &csig); int64_t ret_value = runnable.Call(); CHECK_EQ(ret_value, imm); #ifdef OBJECT_PRINT OFStream os(stdout); code->Print(os); byte* begin = code->instruction_start(); byte* end = begin + code->instruction_size(); disasm::Disassembler::Disassemble(stdout, begin, end); #endif int offset = 1234; // Relocating references by offset int mode_mask = (1 << RelocInfo::WASM_MEMORY_REFERENCE); for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { DCHECK(RelocInfo::IsWasmMemoryReference(it.rinfo()->rmode())); it.rinfo()->update_wasm_memory_reference( isolate, it.rinfo()->wasm_memory_reference(), it.rinfo()->wasm_memory_reference() + offset, SKIP_ICACHE_FLUSH); } // Check if immediate is updated correctly ret_value = runnable.Call(); CHECK_EQ(ret_value, imm + offset); #ifdef OBJECT_PRINT code->Print(os); begin = code->instruction_start(); end = begin + code->instruction_size(); disasm::Disassembler::Disassemble(stdout, begin, end); #endif } TEST(WasmRelocationX64WasmMemorySizeReference) { CcTest::InitializeVM(); Isolate* isolate = CcTest::i_isolate(); HandleScope scope(isolate); v8::internal::byte buffer[4096]; Assembler assm(isolate, buffer, sizeof buffer); DummyStaticFunction(NULL); int32_t size = 512; Label fail; __ movl(rax, Immediate(size, RelocInfo::WASM_MEMORY_SIZE_REFERENCE)); __ cmpl(rax, Immediate(size, RelocInfo::WASM_MEMORY_SIZE_REFERENCE)); __ j(not_equal, &fail); __ ret(0); __ bind(&fail); __ movl(rax, Immediate(0xdeadbeef)); __ ret(0); CodeDesc desc; assm.GetCode(&desc); Handle<Code> code = isolate->factory()->NewCode( desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); USE(code); CSignature0<int64_t> csig; CodeRunner<int64_t> runnable(isolate, code, &csig); int64_t ret_value = runnable.Call(); CHECK_NE(ret_value, bit_cast<uint32_t>(0xdeadbeef)); #ifdef OBJECT_PRINT OFStream os(stdout); code->Print(os); byte* begin = code->instruction_start(); byte* end = begin + code->instruction_size(); disasm::Disassembler::Disassemble(stdout, begin, end); #endif int32_t diff = 512; int mode_mask = (1 << RelocInfo::WASM_MEMORY_SIZE_REFERENCE); for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) { DCHECK(RelocInfo::IsWasmMemorySizeReference(it.rinfo()->rmode())); it.rinfo()->update_wasm_memory_size( isolate, it.rinfo()->wasm_memory_size_reference(), it.rinfo()->wasm_memory_size_reference() + diff, SKIP_ICACHE_FLUSH); } ret_value = runnable.Call(); CHECK_NE(ret_value, bit_cast<uint32_t>(0xdeadbeef)); #ifdef OBJECT_PRINT code->Print(os); begin = code->instruction_start(); end = begin + code->instruction_size(); disasm::Disassembler::Disassemble(stdout, begin, end); #endif } #undef __