85 lines
3.0 KiB
C++
85 lines
3.0 KiB
C++
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// Copyright 2016 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 "src/objects.h"
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#include "test/cctest/cctest.h"
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using namespace v8::internal;
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TEST(CodeLayoutWithoutUnwindingInfo) {
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CcTest::InitializeVM();
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HandleScope handle_scope(CcTest::i_isolate());
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// "Hello, World!" in ASCII.
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byte buffer_array[13] = {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20,
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0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21};
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byte* buffer = &buffer_array[0];
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int buffer_size = sizeof(buffer_array);
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CodeDesc code_desc;
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code_desc.buffer = buffer;
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code_desc.buffer_size = buffer_size;
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code_desc.constant_pool_size = 0;
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code_desc.instr_size = buffer_size;
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code_desc.reloc_size = 0;
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code_desc.origin = nullptr;
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code_desc.unwinding_info = nullptr;
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code_desc.unwinding_info_size = 0;
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Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
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code_desc, 0, Handle<Object>::null());
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CHECK(!code->has_unwinding_info());
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CHECK_EQ(code->instruction_size(), buffer_size);
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CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0);
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CHECK_EQ(code->instruction_end() - reinterpret_cast<byte*>(*code),
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Code::kHeaderSize + buffer_size - kHeapObjectTag);
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}
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TEST(CodeLayoutWithUnwindingInfo) {
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CcTest::InitializeVM();
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HandleScope handle_scope(CcTest::i_isolate());
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// "Hello, World!" in ASCII.
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byte buffer_array[13] = {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20,
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0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21};
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// "JavaScript" in ASCII.
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byte unwinding_info_array[10] = {0x4a, 0x61, 0x76, 0x61, 0x53,
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0x63, 0x72, 0x69, 0x70, 0x74};
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byte* buffer = &buffer_array[0];
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int buffer_size = sizeof(buffer_array);
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byte* unwinding_info = &unwinding_info_array[0];
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int unwinding_info_size = sizeof(unwinding_info_array);
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CodeDesc code_desc;
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code_desc.buffer = buffer;
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code_desc.buffer_size = buffer_size;
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code_desc.constant_pool_size = 0;
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code_desc.instr_size = buffer_size;
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code_desc.reloc_size = 0;
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code_desc.origin = nullptr;
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code_desc.unwinding_info = unwinding_info;
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code_desc.unwinding_info_size = unwinding_info_size;
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Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
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code_desc, 0, Handle<Object>::null());
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CHECK(code->has_unwinding_info());
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CHECK_EQ(code->instruction_size(), buffer_size);
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CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0);
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CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8));
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CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
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CHECK(
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IsAligned(reinterpret_cast<uintptr_t>(code->unwinding_info_start()), 8));
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CHECK_EQ(
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memcmp(code->unwinding_info_start(), unwinding_info, unwinding_info_size),
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0);
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CHECK_EQ(code->unwinding_info_end() - reinterpret_cast<byte*>(*code),
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Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size +
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unwinding_info_size - kHeapObjectTag);
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}
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