Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 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 | } |