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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15 //
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26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28 #include "src/assembler.h"
29 #include "src/macro-assembler.h"
30 #include "test/cctest/cctest.h"
31
32 namespace v8 {
33 namespace internal {
34
WriteRinfo(RelocInfoWriter * writer,byte * pc,RelocInfo::Mode mode,intptr_t data)35 static 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.
TEST(Positions)44 TEST(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", pc, pos);
61 } else {
62 printf("TEST WRITING POSITION %p %d\n", 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 = {buffer.get(), buffer_size, code_size,
72 relocation_info_size, 0, &assm};
73
74 // Read only (non-statement) positions.
75 {
76 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::POSITION));
77 pc = buffer.get();
78 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) {
79 printf("TESTING 1: %d\n", i);
80 RelocInfo::Mode mode = (i % 2 == 0) ?
81 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION;
82 if (mode == RelocInfo::POSITION) {
83 CHECK_EQ(pc, it.rinfo()->pc());
84 CHECK_EQ(mode, it.rinfo()->rmode());
85 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data()));
86 it.next();
87 }
88 }
89 CHECK(it.done());
90 }
91
92 // Read only statement positions.
93 {
94 RelocIterator it(desc, RelocInfo::ModeMask(RelocInfo::STATEMENT_POSITION));
95 pc = buffer.get();
96 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) {
97 RelocInfo::Mode mode = (i % 2 == 0) ?
98 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION;
99 if (mode == RelocInfo::STATEMENT_POSITION) {
100 CHECK_EQ(pc, it.rinfo()->pc());
101 CHECK_EQ(mode, it.rinfo()->rmode());
102 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data()));
103 it.next();
104 }
105 }
106 CHECK(it.done());
107 }
108
109 // Read both types of positions.
110 {
111 RelocIterator it(desc, RelocInfo::kPositionMask);
112 pc = buffer.get();
113 for (int i = 0, pos = 0; i < 100; i++, pc += i, pos += i) {
114 RelocInfo::Mode mode = (i % 2 == 0) ?
115 RelocInfo::STATEMENT_POSITION : RelocInfo::POSITION;
116 CHECK_EQ(pc, it.rinfo()->pc());
117 CHECK_EQ(mode, it.rinfo()->rmode());
118 CHECK_EQ(pos, static_cast<int>(it.rinfo()->data()));
119 it.next();
120 }
121 CHECK(it.done());
122 }
123 }
124
125 } // namespace internal
126 } // namespace v8
127