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// Copyright 2016 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 "src/heap/factory.h"
#include "src/isolate.h"
#include "src/objects-inl.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
TEST(CodeLayoutWithoutUnwindingInfo) {
CcTest::InitializeVM();
HandleScope handle_scope(CcTest::i_isolate());
// "Hello, World!" in ASCII.
byte buffer_array[13] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20,
0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21};
byte* buffer = &buffer_array[0];
int buffer_size = sizeof(buffer_array);
CodeDesc code_desc;
code_desc.buffer = buffer;
code_desc.buffer_size = buffer_size;
code_desc.constant_pool_size = 0;
code_desc.instr_size = buffer_size;
code_desc.reloc_size = 0;
code_desc.origin = nullptr;
code_desc.unwinding_info = nullptr;
code_desc.unwinding_info_size = 0;
Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
code_desc, Code::STUB, Handle<Object>::null());
CHECK(!code->has_unwinding_info());
CHECK_EQ(code->raw_instruction_size(), buffer_size);
CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
buffer, buffer_size));
CHECK_EQ(code->raw_instruction_end() - code->address(),
Code::kHeaderSize + buffer_size);
}
TEST(CodeLayoutWithUnwindingInfo) {
CcTest::InitializeVM();
HandleScope handle_scope(CcTest::i_isolate());
// "Hello, World!" in ASCII.
byte buffer_array[13] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20,
0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21};
// "JavaScript" in ASCII.
byte unwinding_info_array[10] = {0x4A, 0x61, 0x76, 0x61, 0x53,
0x63, 0x72, 0x69, 0x70, 0x74};
byte* buffer = &buffer_array[0];
int buffer_size = sizeof(buffer_array);
byte* unwinding_info = &unwinding_info_array[0];
int unwinding_info_size = sizeof(unwinding_info_array);
CodeDesc code_desc;
code_desc.buffer = buffer;
code_desc.buffer_size = buffer_size;
code_desc.constant_pool_size = 0;
code_desc.instr_size = buffer_size;
code_desc.reloc_size = 0;
code_desc.origin = nullptr;
code_desc.unwinding_info = unwinding_info;
code_desc.unwinding_info_size = unwinding_info_size;
Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
code_desc, Code::STUB, Handle<Object>::null());
CHECK(code->has_unwinding_info());
CHECK_EQ(code->raw_instruction_size(), buffer_size);
CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
buffer, buffer_size));
CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8));
CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
CHECK(IsAligned(code->unwinding_info_start(), 8));
CHECK_EQ(memcmp(reinterpret_cast<void*>(code->unwinding_info_start()),
unwinding_info, unwinding_info_size),
0);
CHECK_EQ(code->unwinding_info_end() - code->address(),
Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size +
unwinding_info_size);
}
} // namespace internal
} // namespace v8
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