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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
// Copyright 2022 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/execution/isolate.h"
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#include "src/heap/factory.h"
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#include "src/objects/objects-inl.h"
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#include "test/unittests/test-utils.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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using CodeLayoutTest = TestWithContext;
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namespace internal {
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TEST_F(CodeLayoutTest, CodeLayoutWithoutUnwindingInfo) {
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HandleScope handle_scope(i_isolate());
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// "Hello, World!" in ASCII, padded to kCodeAlignment.
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uint8_t buffer_array[16] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20, 0x57,
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0x6F, 0x72, 0x6C, 0x64, 0x21, 0xcc, 0xcc, 0xcc};
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uint8_t* 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.instr_size = buffer_size;
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code_desc.safepoint_table_offset = buffer_size;
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code_desc.safepoint_table_size = 0;
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code_desc.handler_table_offset = buffer_size;
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code_desc.handler_table_size = 0;
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code_desc.constant_pool_offset = buffer_size;
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code_desc.constant_pool_size = 0;
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code_desc.code_comments_offset = buffer_size;
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code_desc.code_comments_size = 0;
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code_desc.reloc_offset = buffer_size;
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code_desc.reloc_size = 0;
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code_desc.unwinding_info = nullptr;
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code_desc.unwinding_info_size = 0;
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code_desc.origin = nullptr;
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DirectHandle<Code> code =
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Factory::CodeBuilder(i_isolate(), code_desc, CodeKind::FOR_TESTING)
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.Build();
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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(0, memcmp(reinterpret_cast<void*>(code->instruction_start()), buffer,
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buffer_size));
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CHECK_EQ(
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static_cast<int>(code->instruction_end() - code->instruction_start()),
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buffer_size);
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}
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TEST_F(CodeLayoutTest, CodeLayoutWithUnwindingInfo) {
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HandleScope handle_scope(i_isolate());
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// "Hello, World!" in ASCII, padded to kCodeAlignment.
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uint8_t buffer_array[16] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20, 0x57,
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0x6F, 0x72, 0x6C, 0x64, 0x21, 0xcc, 0xcc, 0xcc};
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// "JavaScript" in ASCII.
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uint8_t unwinding_info_array[10] = {0x4A, 0x61, 0x76, 0x61, 0x53,
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0x63, 0x72, 0x69, 0x70, 0x74};
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uint8_t* buffer = &buffer_array[0];
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int buffer_size = sizeof(buffer_array);
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uint8_t* 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.instr_size = buffer_size;
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code_desc.safepoint_table_offset = buffer_size;
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code_desc.safepoint_table_size = 0;
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code_desc.handler_table_offset = buffer_size;
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code_desc.handler_table_size = 0;
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code_desc.constant_pool_offset = buffer_size;
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code_desc.constant_pool_size = 0;
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code_desc.code_comments_offset = buffer_size;
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code_desc.code_comments_size = 0;
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code_desc.reloc_offset = buffer_size;
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code_desc.reloc_size = 0;
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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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code_desc.origin = nullptr;
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DirectHandle<Code> code =
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Factory::CodeBuilder(i_isolate(), code_desc, CodeKind::FOR_TESTING)
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.Build();
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CHECK(code->has_unwinding_info());
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CHECK_EQ(code->body_size(), buffer_size + unwinding_info_size);
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CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->instruction_start()), buffer,
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buffer_size));
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CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
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CHECK_EQ(memcmp(reinterpret_cast<void*>(code->unwinding_info_start()),
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unwinding_info, unwinding_info_size),
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0);
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CHECK_EQ(
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static_cast<int>(code->unwinding_info_end() - code->instruction_start()),
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buffer_size + unwinding_info_size);
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}
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} // namespace internal
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} // namespace v8
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