-
Notifications
You must be signed in to change notification settings - Fork 274
Expand file tree
/
Copy pathplugin.cpp
More file actions
133 lines (121 loc) · 2.89 KB
/
plugin.cpp
File metadata and controls
133 lines (121 loc) · 2.89 KB
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
#include <binaryninjaapi.h>
#include <thread>
using namespace BinaryNinja;
class StackRenderLayer: public RenderLayer
{
public:
StackRenderLayer(): RenderLayer("Annotate Stack Offset") {}
void ApplyToLines(
Ref<BasicBlock> block,
std::vector<DisassemblyTextLine>& lines
)
{
for (auto& line: lines)
{
// Skip blank lines (block separators)
if (line.tokens.empty())
{
continue;
}
// Insert tokens after the address separator
int64_t sep = -1;
for (int64_t i = 0; i < line.tokens.size(); i ++)
{
if (line.tokens[i].type == AddressSeparatorToken)
{
sep = i;
break;
}
}
// Don't annotate lines which don't have an address separator
// (these are usually annotations like { Does not return }
if (sep == -1)
{
continue;
}
RegisterValue stackOffset;
RegisterValue stackOffsetAfter;
if (block->GetFunction()->GetMediumLevelILIfAvailable())
{
// Grab stack offset value from function
stackOffset = block->GetFunction()->GetRegisterValueAtInstruction(
block->GetArchitecture(),
line.addr,
block->GetArchitecture()->GetStackPointerRegister()
);
stackOffsetAfter = block->GetFunction()->GetRegisterValueAfterInstruction(
block->GetArchitecture(),
line.addr,
block->GetArchitecture()->GetStackPointerRegister()
);
}
if (stackOffset.state == StackFrameOffset)
{
// Stack pointer is resolved to an offset: show the offset
// (but negative because that is how other tools do it)
line.tokens.emplace(
line.tokens.begin() + sep + 1,
AnnotationToken,
fmt::format("{:4x}", -stackOffset.value),
-stackOffset.value
);
}
else
{
// Stack pointer is not resolved, show ??
line.tokens.emplace(
line.tokens.begin() + sep + 1,
AnnotationToken,
" ??",
0
);
}
// And put a spacer after the offset token
if (stackOffset != stackOffsetAfter)
{
line.tokens.emplace(
line.tokens.begin() + sep + 2,
AnnotationToken,
"* "
);
}
else
{
line.tokens.emplace(
line.tokens.begin() + sep + 2,
AnnotationToken,
" "
);
}
}
}
virtual void ApplyToDisassemblyBlock(
Ref<BasicBlock> block,
std::vector<DisassemblyTextLine>& lines
) override
{
// Break this out into a helper so we don't have to write it twice
ApplyToLines(block, lines);
}
virtual void ApplyToLowLevelILBlock(
Ref<BasicBlock> block,
std::vector<DisassemblyTextLine>& lines
) override
{
// Break this out into a helper so we don't have to write it twice
ApplyToLines(block, lines);
}
};
extern "C" {
BN_DECLARE_CORE_ABI_VERSION
#ifdef DEMO_EDITION
bool StackRenderLayerPluginInit()
#else
BINARYNINJAPLUGIN bool CorePluginInit()
#endif
{
static StackRenderLayer* layer = new StackRenderLayer();
RenderLayer::Register(layer, DisabledByDefaultRenderLayerDefaultEnableState);
return true;
}
}