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/objects.h" 6 #include "test/cctest/cctest.h" 7 8 using namespace v8::internal; 9 10 TEST(CodeLayoutWithoutUnwindingInfo) { 11 CcTest::InitializeVM(); 12 HandleScope handle_scope(CcTest::i_isolate()); 13 14 // "Hello, World!" in ASCII. 15 byte buffer_array[13] = {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20, 16 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21}; 17 18 byte* buffer = &buffer_array[0]; 19 int buffer_size = sizeof(buffer_array); 20 21 CodeDesc code_desc; 22 code_desc.buffer = buffer; 23 code_desc.buffer_size = buffer_size; 24 code_desc.constant_pool_size = 0; 25 code_desc.instr_size = buffer_size; 26 code_desc.reloc_size = 0; 27 code_desc.origin = nullptr; 28 code_desc.unwinding_info = nullptr; 29 code_desc.unwinding_info_size = 0; 30 31 Handle<Code> code = CcTest::i_isolate()->factory()->NewCode( 32 code_desc, 0, Handle<Object>::null()); 33 34 CHECK(!code->has_unwinding_info()); 35 CHECK_EQ(code->instruction_size(), buffer_size); 36 CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0); 37 CHECK_EQ(code->instruction_end() - reinterpret_cast<byte*>(*code), 38 Code::kHeaderSize + buffer_size - kHeapObjectTag); 39 } 40 41 TEST(CodeLayoutWithUnwindingInfo) { 42 CcTest::InitializeVM(); 43 HandleScope handle_scope(CcTest::i_isolate()); 44 45 // "Hello, World!" in ASCII. 46 byte buffer_array[13] = {0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20, 47 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x21}; 48 49 // "JavaScript" in ASCII. 50 byte unwinding_info_array[10] = {0x4a, 0x61, 0x76, 0x61, 0x53, 51 0x63, 0x72, 0x69, 0x70, 0x74}; 52 53 byte* buffer = &buffer_array[0]; 54 int buffer_size = sizeof(buffer_array); 55 byte* unwinding_info = &unwinding_info_array[0]; 56 int unwinding_info_size = sizeof(unwinding_info_array); 57 58 CodeDesc code_desc; 59 code_desc.buffer = buffer; 60 code_desc.buffer_size = buffer_size; 61 code_desc.constant_pool_size = 0; 62 code_desc.instr_size = buffer_size; 63 code_desc.reloc_size = 0; 64 code_desc.origin = nullptr; 65 code_desc.unwinding_info = unwinding_info; 66 code_desc.unwinding_info_size = unwinding_info_size; 67 68 Handle<Code> code = CcTest::i_isolate()->factory()->NewCode( 69 code_desc, 0, Handle<Object>::null()); 70 71 CHECK(code->has_unwinding_info()); 72 CHECK_EQ(code->instruction_size(), buffer_size); 73 CHECK_EQ(memcmp(code->instruction_start(), buffer, buffer_size), 0); 74 CHECK(IsAligned(code->GetUnwindingInfoSizeOffset(), 8)); 75 CHECK_EQ(code->unwinding_info_size(), unwinding_info_size); 76 CHECK( 77 IsAligned(reinterpret_cast<uintptr_t>(code->unwinding_info_start()), 8)); 78 CHECK_EQ( 79 memcmp(code->unwinding_info_start(), unwinding_info, unwinding_info_size), 80 0); 81 CHECK_EQ(code->unwinding_info_end() - reinterpret_cast<byte*>(*code), 82 Code::kHeaderSize + RoundUp(buffer_size, kInt64Size) + kInt64Size + 83 unwinding_info_size - kHeapObjectTag); 84 } 85
