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// 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
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