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 29 #include "cctest.h" 30 #include "assembler.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(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 const int code_size = 10 * KB; 46 int relocation_info_size = 10 * KB; 47 const int buffer_size = code_size + relocation_info_size; 48 SmartArrayPointer<byte> buffer(new byte[buffer_size]); 49 50 byte* pc = *buffer; 51 byte* buffer_end = *buffer + buffer_size; 52 53 RelocInfoWriter writer(buffer_end, pc); 54 byte* relocation_info_end = buffer_end - relocation_info_size; 55 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 56 RelocInfo::Mode mode = (i % 2 == 0) ? 57 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 58 WriteRinfo(&writer, pc, mode, pos); 59 CHECK(writer.pos() - RelocInfoWriter::kMaxSize >= relocation_info_end); 60 } 61 62 relocation_info_size = static_cast<int>(buffer_end - writer.pos()); 63 CodeDesc desc = { *buffer, buffer_size, code_size, 64 relocation_info_size, NULL }; 65 66 // Read only (non-statement) positions. 67 { 68 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::POSITION)); 69 pc = *buffer; 70 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 71 RelocInfo::Mode mode = (i % 2 == 0) ? 72 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 73 if (mode == RelocInfo::POSITION) { 74 CHECK_EQ(pc, it.rinfo()->pc()); 75 CHECK_EQ(mode, it.rinfo()->rmode()); 76 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 77 it.next(); 78 } 79 } 80 CHECK(it.done()); 81 } 82 83 // Read only statement positions. 84 { 85 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::STATEMENT_POSITION)); 86 pc = *buffer; 87 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 88 RelocInfo::Mode mode = (i % 2 == 0) ? 89 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 90 if (mode == RelocInfo::STATEMENT_POSITION) { 91 CHECK_EQ(pc, it.rinfo()->pc()); 92 CHECK_EQ(mode, it.rinfo()->rmode()); 93 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 94 it.next(); 95 } 96 } 97 CHECK(it.done()); 98 } 99 100 // Read both types of positions. 101 { 102 RelocIterator it(desc, RelocInfo::kPositionMask); 103 pc = *buffer; 104 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { 105 RelocInfo::Mode mode = (i % 2 == 0) ? 106 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; 107 CHECK_EQ(pc, it.rinfo()->pc()); 108 CHECK_EQ(mode, it.rinfo()->rmode()); 109 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); 110 it.next(); 111 } 112 CHECK(it.done()); 113 } 114 } 115 116 } } // namespace v8::internal 117
