Remove position info from relocation info.

test/cctest/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,
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-// 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
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-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "src/assembler.h"
-#include "src/macro-assembler.h"
-#include "test/cctest/cctest.h"
-
-namespace v8 {
-namespace internal {
-
-static void WriteRinfo(RelocInfoWriter* writer,
-                       byte* pc, RelocInfo::Mode mode, intptr_t data) {
-  RelocInfo rinfo(CcTest::i_isolate(), 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) {
-  CcTest::InitializeVM();
-  const int code_size = 10 * KB;
-  int relocation_info_size = 10 * KB;
-  const int buffer_size = code_size + relocation_info_size;
-  v8::base::SmartArrayPointer<byte> buffer(new byte[buffer_size]);
-
-  byte* pc = buffer.get();
-  byte* buffer_end = buffer.get() + 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;
-    if (mode == RelocInfo::STATEMENT_POSITION) {
-      printf("TEST WRITING STATEMENT %p %d\n", static_cast<void*>(pc), pos);
-    } else {
-      printf("TEST WRITING POSITION %p %d\n", static_cast<void*>(pc), pos);
-    }
-    WriteRinfo(&writer, pc, mode, pos);
-    CHECK(writer.pos() - RelocInfoWriter::kMaxSize >= relocation_info_end);
-  }
-
-  writer.Finish();
-  relocation_info_size = static_cast<int>(buffer_end - writer.pos());
-  MacroAssembler assm(CcTest::i_isolate(), nullptr, 0, CodeObjectRequired::kNo);
-  CodeDesc desc = {
-      buffer.get(), buffer_size, code_size, relocation_info_size, 0,
-      nullptr,      0,           &assm};
-
-  // Read only (non-statement) positions.
-  {
-    RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::POSITION));
-    pc = buffer.get();
-    for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) {
-      printf("TESTING 1: %d\n", 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.get();
-    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.get();
-    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 internal
-}  // namespace v8