1 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #include "src/assembler.h" 29 #include "src/macro-assembler.h" 30 #include "test/cctest/cctest.h" 31 32 namespace v8 { 33 namespace internal { 34 35 static void WriteRinfo(RelocInfoWriter* writer, 36 byte* pc, RelocInfo::Mode mode, intptr_t data) { 37 RelocInfo rinfo(CcTest::i_isolate(), pc, mode, data, NULL); 38 writer->Write(&rinfo); 39 } 40 41 42 // Tests that writing both types of positions and then reading either 43 // or both works as expected. 44 TEST(Positions) { 45 CcTest::InitializeVM(); 46 const int code_size = 10 * KB; 47 int relocation_info_size = 10 * KB; 48 const int buffer_size = code_size + relocation_info_size; 49 v8::base::SmartArrayPointer<byte> buffer(new byte[buffer_size]); 50 51 byte* pc = buffer.get(); 52 byte* buffer_end = buffer.get() + buffer_size; 53 54 RelocInfoWriter writer(buffer_end, pc); 55 byte* relocation_info_end = buffer_end - relocation_info_size; 56 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 57 RelocInfo::Mode mode = (i % 2 == 0) ? 58 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 59 if (mode == RelocInfo::STATEMENT_POSITION) { 60 printf("TEST WRITING STATEMENT %p %d\n", static_cast<void*>(pc), pos); 61 } else { 62 printf("TEST WRITING POSITION %p %d\n", static_cast<void*>(pc), pos); 63 } 64 WriteRinfo(&writer, pc, mode, pos); 65 CHECK(writer.pos() - RelocInfoWriter::kMaxSize >= relocation_info_end); 66 } 67 68 writer.Finish(); 69 relocation_info_size = static_cast<int>(buffer_end - writer.pos()); 70 MacroAssembler assm(CcTest::i_isolate(), nullptr, 0, CodeObjectRequired::kNo); 71 CodeDesc desc = { 72 buffer.get(), buffer_size, code_size, relocation_info_size, 0, 73 nullptr, 0, &assm}; 74 75 // Read only (non-statement) positions. 76 { 77 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::POSITION)); 78 pc = buffer.get(); 79 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 80 printf("TESTING 1: %d\n", i); 81 RelocInfo::Mode mode = (i % 2 == 0) ? 82 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 83 if (mode == RelocInfo::POSITION) { 84 CHECK_EQ(pc, it.rinfo()->pc()); 85 CHECK_EQ(mode, it.rinfo()->rmode()); 86 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 87 it.next(); 88 } 89 } 90 CHECK(it.done()); 91 } 92 93 // Read only statement positions. 94 { 95 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::STATEMENT_POSITION)); 96 pc = buffer.get(); 97 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 98 RelocInfo::Mode mode = (i % 2 == 0) ? 99 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 100 if (mode == RelocInfo::STATEMENT_POSITION) { 101 CHECK_EQ(pc, it.rinfo()->pc()); 102 CHECK_EQ(mode, it.rinfo()->rmode()); 103 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 104 it.next(); 105 } 106 } 107 CHECK(it.done()); 108 } 109 110 // Read both types of positions. 111 { 112 RelocIterator it(desc, RelocInfo::kPositionMask); 113 pc = buffer.get(); 114 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 115 RelocInfo::Mode mode = (i % 2 == 0) ? 116 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 117 CHECK_EQ(pc, it.rinfo()->pc()); 118 CHECK_EQ(mode, it.rinfo()->rmode()); 119 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 120 it.next(); 121 } 122 CHECK(it.done()); 123 } 124 } 125 126 } // namespace internal 127 } // namespace v8 128
