1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "stack_map.h"
#include "stack_map_stream.h"
#include "utils/arena_bit_vector.h"
#include "gtest/gtest.h"
namespace art {
bool SameBits(MemoryRegion region, const BitVector& bit_vector) {
for (size_t i = 0; i < region.size_in_bits(); ++i) {
if (region.LoadBit(i) != bit_vector.IsBitSet(i)) {
return false;
}
}
return true;
}
TEST(StackMapTest, Test1) {
ArenaPool pool;
ArenaAllocator arena(&pool);
StackMapStream stream(&arena);
ArenaBitVector sp_mask(&arena, 0, false);
stream.AddStackMapEntry(0, 64, 0x3, &sp_mask, 2, 0);
stream.AddDexRegisterEntry(DexRegisterMap::kInStack, 0);
stream.AddDexRegisterEntry(DexRegisterMap::kConstant, -2);
size_t size = stream.ComputeNeededSize();
void* memory = arena.Alloc(size, kArenaAllocMisc);
MemoryRegion region(memory, size);
stream.FillIn(region);
CodeInfo code_info(region);
ASSERT_EQ(0u, code_info.GetStackMaskSize());
ASSERT_EQ(1u, code_info.GetNumberOfStackMaps());
StackMap stack_map = code_info.GetStackMapAt(0);
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(0)));
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePcOffset(64)));
ASSERT_EQ(0u, stack_map.GetDexPc());
ASSERT_EQ(64u, stack_map.GetNativePcOffset());
ASSERT_EQ(0x3u, stack_map.GetRegisterMask());
ASSERT_FALSE(stack_map.HasInlineInfo());
MemoryRegion stack_mask = stack_map.GetStackMask();
ASSERT_TRUE(SameBits(stack_mask, sp_mask));
DexRegisterMap dex_registers = code_info.GetDexRegisterMapOf(stack_map, 2);
ASSERT_EQ(DexRegisterMap::kInStack, dex_registers.GetLocationKind(0));
ASSERT_EQ(DexRegisterMap::kConstant, dex_registers.GetLocationKind(1));
ASSERT_EQ(0, dex_registers.GetValue(0));
ASSERT_EQ(-2, dex_registers.GetValue(1));
}
TEST(StackMapTest, Test2) {
ArenaPool pool;
ArenaAllocator arena(&pool);
StackMapStream stream(&arena);
ArenaBitVector sp_mask1(&arena, 0, true);
sp_mask1.SetBit(2);
sp_mask1.SetBit(4);
stream.AddStackMapEntry(0, 64, 0x3, &sp_mask1, 2, 2);
stream.AddDexRegisterEntry(DexRegisterMap::kInStack, 0);
stream.AddDexRegisterEntry(DexRegisterMap::kConstant, -2);
stream.AddInlineInfoEntry(42);
stream.AddInlineInfoEntry(82);
ArenaBitVector sp_mask2(&arena, 0, true);
sp_mask2.SetBit(3);
sp_mask1.SetBit(8);
stream.AddStackMapEntry(1, 128, 0xFF, &sp_mask2, 1, 0);
stream.AddDexRegisterEntry(DexRegisterMap::kInRegister, 0);
size_t size = stream.ComputeNeededSize();
void* memory = arena.Alloc(size, kArenaAllocMisc);
MemoryRegion region(memory, size);
stream.FillIn(region);
CodeInfo code_info(region);
ASSERT_EQ(1u, code_info.GetStackMaskSize());
ASSERT_EQ(2u, code_info.GetNumberOfStackMaps());
StackMap stack_map = code_info.GetStackMapAt(0);
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(0)));
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePcOffset(64)));
ASSERT_EQ(0u, stack_map.GetDexPc());
ASSERT_EQ(64u, stack_map.GetNativePcOffset());
ASSERT_EQ(0x3u, stack_map.GetRegisterMask());
MemoryRegion stack_mask = stack_map.GetStackMask();
ASSERT_TRUE(SameBits(stack_mask, sp_mask1));
DexRegisterMap dex_registers = code_info.GetDexRegisterMapOf(stack_map, 2);
ASSERT_EQ(DexRegisterMap::kInStack, dex_registers.GetLocationKind(0));
ASSERT_EQ(DexRegisterMap::kConstant, dex_registers.GetLocationKind(1));
ASSERT_EQ(0, dex_registers.GetValue(0));
ASSERT_EQ(-2, dex_registers.GetValue(1));
InlineInfo inline_info = code_info.GetInlineInfoOf(stack_map);
ASSERT_EQ(2u, inline_info.GetDepth());
ASSERT_EQ(42u, inline_info.GetMethodReferenceIndexAtDepth(0));
ASSERT_EQ(82u, inline_info.GetMethodReferenceIndexAtDepth(1));
stack_map = code_info.GetStackMapAt(1);
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForDexPc(1u)));
ASSERT_TRUE(stack_map.Equals(code_info.GetStackMapForNativePcOffset(128u)));
ASSERT_EQ(1u, stack_map.GetDexPc());
ASSERT_EQ(128u, stack_map.GetNativePcOffset());
ASSERT_EQ(0xFFu, stack_map.GetRegisterMask());
stack_mask = stack_map.GetStackMask();
ASSERT_TRUE(SameBits(stack_mask, sp_mask2));
ASSERT_FALSE(stack_map.HasInlineInfo());
}
} // namespace art
|
