1// Copyright 2011 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
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27
28#include "src/assembler.h"
29#include "src/macro-assembler.h"
30#include "test/cctest/cctest.h"
31
32namespace v8 {
33namespace internal {
34
35static 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.
44TEST(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