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       26644 : 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           5 :   code_desc.instr_size = buffer_size;
      28           5 :   code_desc.safepoint_table_offset = buffer_size;
      29             :   code_desc.safepoint_table_size = 0;
      30           5 :   code_desc.handler_table_offset = buffer_size;
      31             :   code_desc.handler_table_size = 0;
      32           5 :   code_desc.constant_pool_offset = buffer_size;
      33             :   code_desc.constant_pool_size = 0;
      34           5 :   code_desc.code_comments_offset = buffer_size;
      35             :   code_desc.code_comments_size = 0;
      36           5 :   code_desc.reloc_offset = buffer_size;
      37             :   code_desc.reloc_size = 0;
      38             :   code_desc.unwinding_info = nullptr;
      39             :   code_desc.unwinding_info_size = 0;
      40             :   code_desc.origin = nullptr;
      41             : 
      42             :   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
      43          10 :       code_desc, Code::STUB, Handle<Object>::null());
      44             : 
      45           5 :   CHECK(!code->has_unwinding_info());
      46           5 :   CHECK_EQ(code->raw_instruction_size(), buffer_size);
      47           5 :   CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
      48             :                      buffer, buffer_size));
      49          10 :   CHECK_EQ(code->raw_instruction_end() - code->address(),
      50             :            Code::kHeaderSize + buffer_size);
      51           5 : }
      52             : 
      53       26644 : TEST(CodeLayoutWithUnwindingInfo) {
      54           5 :   CcTest::InitializeVM();
      55             :   HandleScope handle_scope(CcTest::i_isolate());
      56             : 
      57             :   // "Hello, World!" in ASCII.
      58             :   byte buffer_array[13] = {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20,
      59           5 :                            0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21};
      60             : 
      61             :   // "JavaScript" in ASCII.
      62             :   byte unwinding_info_array[10] = {0x4A, 0x61, 0x76, 0x61, 0x53,
      63           5 :                                    0x63, 0x72, 0x69, 0x70, 0x74};
      64             : 
      65             :   byte* buffer = &buffer_array[0];
      66             :   int buffer_size = sizeof(buffer_array);
      67             :   byte* unwinding_info = &unwinding_info_array[0];
      68             :   int unwinding_info_size = sizeof(unwinding_info_array);
      69             : 
      70           5 :   CodeDesc code_desc;
      71           5 :   code_desc.buffer = buffer;
      72           5 :   code_desc.buffer_size = buffer_size;
      73           5 :   code_desc.instr_size = buffer_size;
      74           5 :   code_desc.safepoint_table_offset = buffer_size;
      75             :   code_desc.safepoint_table_size = 0;
      76           5 :   code_desc.handler_table_offset = buffer_size;
      77             :   code_desc.handler_table_size = 0;
      78           5 :   code_desc.constant_pool_offset = buffer_size;
      79             :   code_desc.constant_pool_size = 0;
      80           5 :   code_desc.code_comments_offset = buffer_size;
      81             :   code_desc.code_comments_size = 0;
      82           5 :   code_desc.reloc_offset = buffer_size;
      83             :   code_desc.reloc_size = 0;
      84           5 :   code_desc.unwinding_info = unwinding_info;
      85           5 :   code_desc.unwinding_info_size = unwinding_info_size;
      86             :   code_desc.origin = nullptr;
      87             : 
      88             :   Handle<Code> code = CcTest::i_isolate()->factory()->NewCode(
      89          10 :       code_desc, Code::STUB, Handle<Object>::null());
      90             : 
      91           5 :   CHECK(code->has_unwinding_info());
      92           5 :   CHECK_EQ(code->raw_instruction_size(), buffer_size);
      93           5 :   CHECK_EQ(0, memcmp(reinterpret_cast<void*>(code->raw_instruction_start()),
      94             :                      buffer, buffer_size));
      95             :   CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8));
      96           5 :   CHECK_EQ(code->unwinding_info_size(), unwinding_info_size);
      97           5 :   CHECK(IsAligned(code->unwinding_info_start(), 8));
      98           5 :   CHECK_EQ(memcmp(reinterpret_cast<void*>(code->unwinding_info_start()),
      99             :                   unwinding_info, unwinding_info_size),
     100             :            0);
     101          10 :   CHECK_EQ(code->unwinding_info_end() - code->address(),
     102             :            Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size +
     103             :                unwinding_info_size);
     104           5 : }
     105             : 
     106             : }  // namespace internal
     107       79917 : }  // namespace v8