JezK
Edit File: test-reloc-info.cc
// Copyright 2011 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include "cctest.h" #include "assembler.h" namespace v8 { namespace internal { static void WriteRinfo(RelocInfoWriter* writer, byte* pc, RelocInfo::Mode mode, intptr_t data) { RelocInfo rinfo(pc, mode, data, NULL); writer->Write(&rinfo); } // Tests that writing both types of positions and then reading either // or both works as expected. TEST(Positions) { const int code_size = 10 * KB; int relocation_info_size = 10 * KB; const int buffer_size = code_size + relocation_info_size; SmartArrayPointer<byte> buffer(new byte[buffer_size]); byte* pc = *buffer; byte* buffer_end = *buffer + buffer_size; RelocInfoWriter writer(buffer_end, pc); byte* relocation_info_end = buffer_end - relocation_info_size; for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { RelocInfo::Mode mode = (i % 2 == 0) ? RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; WriteRinfo(&writer, pc, mode, pos); CHECK(writer.pos() - RelocInfoWriter::kMaxSize >= relocation_info_end); } relocation_info_size = static_cast<int>(buffer_end - writer.pos()); CodeDesc desc = { *buffer, buffer_size, code_size, relocation_info_size, NULL }; // Read only (non-statement) positions. { RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::POSITION)); pc = *buffer; for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { RelocInfo::Mode mode = (i % 2 == 0) ? RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; if (mode == RelocInfo::POSITION) { CHECK_EQ(pc, it.rinfo()->pc()); CHECK_EQ(mode, it.rinfo()->rmode()); CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); it.next(); } } CHECK(it.done()); } // Read only statement positions. { RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::STATEMENT_POSITION)); pc = *buffer; for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { RelocInfo::Mode mode = (i % 2 == 0) ? RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; if (mode == RelocInfo::STATEMENT_POSITION) { CHECK_EQ(pc, it.rinfo()->pc()); CHECK_EQ(mode, it.rinfo()->rmode()); CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); it.next(); } } CHECK(it.done()); } // Read both types of positions. { RelocIterator it(desc, RelocInfo::kPositionMask); pc = *buffer; for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) { RelocInfo::Mode mode = (i % 2 == 0) ? RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION; CHECK_EQ(pc, it.rinfo()->pc()); CHECK_EQ(mode, it.rinfo()->rmode()); CHECK_EQ(pos, static_cast<int>(it.rinfo()->data())); it.next(); } CHECK(it.done()); } } } } // namespace v8::internal