Line data    Source code

       1             : // Copyright 2016 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/heap/factory.h"
       6             : #include "src/isolate.h"
       7             : #include "src/objects-inl.h"
       8             : #include "test/cctest/cctest.h"
       9             : 
      10             : namespace v8 {
      11             : namespace internal {
      12             : 
      13       28342 : TEST(CodeLayoutWithoutUnwindingInfo) {
      14           5 :   CcTest::InitializeVM();
      15             :   HandleScope handle_scope(CcTest::i_isolate());
      16             : 
      17             :   // "Hello, World!" in ASCII.
      18             :   byte buffer_array[13] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20,
      19           5 :                            0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21};
      20             : 
      21             :   byte* buffer = &buffer_array[0];
      22             :   int buffer_size = sizeof(buffer_array);
      23             : 
      24           5 :   CodeDesc code_desc;
      25           5 :   code_desc.buffer = buffer;
      26           5 :   code_desc.buffer_size = buffer_size;
      27             :   code_desc.constant_pool_size = 0;
      28           5 :   code_desc.instr_size = buffer_size;
      29             :   code_desc.reloc_size = 0;
      30             :   code_desc.origin = nullptr;
      31             :   code_desc.unwinding_info = nullptr;
      32             :   code_desc.unwinding_info_size = 0;
      33             :   code_desc.code_comments_size = 0;
      34             : 
      35             :   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
      36          10 :       code_desc, Code::STUB, Handle<Object>::null());
      37             : 
      38           5 :   CHECK(!code->has_unwinding_info());
      39           5 :   CHECK_EQ(code->raw_instruction_size(), buffer_size);
      40           5 :   CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
      41             :                      buffer, buffer_size));
      42          10 :   CHECK_EQ(code->raw_instruction_end() - code->address(),
      43             :            Code::kHeaderSize + buffer_size);
      44           5 : }
      45             : 
      46       28342 : TEST(CodeLayoutWithUnwindingInfo) {
      47           5 :   CcTest::InitializeVM();
      48             :   HandleScope handle_scope(CcTest::i_isolate());
      49             : 
      50             :   // "Hello, World!" in ASCII.
      51             :   byte buffer_array[13] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20,
      52           5 :                            0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21};
      53             : 
      54             :   // "JavaScript" in ASCII.
      55             :   byte unwinding_info_array[10] = {0x4A, 0x61, 0x76, 0x61, 0x53,
      56           5 :                                    0x63, 0x72, 0x69, 0x70, 0x74};
      57             : 
      58             :   byte* buffer = &buffer_array[0];
      59             :   int buffer_size = sizeof(buffer_array);
      60             :   byte* unwinding_info = &unwinding_info_array[0];
      61             :   int unwinding_info_size = sizeof(unwinding_info_array);
      62             : 
      63           5 :   CodeDesc code_desc;
      64           5 :   code_desc.buffer = buffer;
      65           5 :   code_desc.buffer_size = buffer_size;
      66             :   code_desc.constant_pool_size = 0;
      67           5 :   code_desc.instr_size = buffer_size;
      68             :   code_desc.reloc_size = 0;
      69             :   code_desc.origin = nullptr;
      70           5 :   code_desc.unwinding_info = unwinding_info;
      71           5 :   code_desc.unwinding_info_size = unwinding_info_size;
      72             :   code_desc.code_comments_size = 0;
      73             : 
      74             :   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
      75          10 :       code_desc, Code::STUB, Handle<Object>::null());
      76             : 
      77           5 :   CHECK(code->has_unwinding_info());
      78           5 :   CHECK_EQ(code->raw_instruction_size(), buffer_size);
      79           5 :   CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
      80             :                      buffer, buffer_size));
      81             :   CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8));
      82           5 :   CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
      83           5 :   CHECK(IsAligned(code->unwinding_info_start(), 8));
      84           5 :   CHECK_EQ(memcmp(reinterpret_cast<void*>(code->unwinding_info_start()),
      85             :                   unwinding_info, unwinding_info_size),
      86             :            0);
      87          10 :   CHECK_EQ(code->unwinding_info_end() - code->address(),
      88             :            Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size +
      89             :                unwinding_info_size);
      90           5 : }
      91             : 
      92             : }  // namespace internal
      93       85011 : }  // namespace v8