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
|
# DExTer : Debugging Experience Tester
# ~~~~~~ ~ ~~ ~ ~~
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
import os
from .utils import *
class Frame(object):
def __init__(self, frame, idx, Symbols):
# Store some base information about the frame
self.ip = frame.InstructionOffset
self.scope_idx = idx
self.virtual = frame.Virtual
self.inline_frame_context = frame.InlineFrameContext
self.func_tbl_entry = frame.FuncTableEntry
# Fetch the module/symbol we're in, with displacement. Useful for debugging.
self.descr = Symbols.GetNearNameByOffset(self.ip)
split = self.descr.split("!")[0]
self.module = split[0]
self.symbol = split[1]
# Fetch symbol group for this scope.
prevscope = Symbols.GetCurrentScopeFrameIndex()
if Symbols.SetScopeFrameByIndex(idx):
symgroup = Symbols.GetScopeSymbolGroup2()
Symbols.SetScopeFrameByIndex(prevscope)
self.symgroup = symgroup
else:
self.symgroup = None
# Fetch the name according to the line-table, using inlining context.
name = Symbols.GetNameByInlineContext(self.ip, self.inline_frame_context)
self.function_name = name.split("!")[-1]
try:
tup = Symbols.GetLineByInlineContext(self.ip, self.inline_frame_context)
self.source_file, self.line_no = tup
except WinError as e:
# Fall back to trying to use a non-inlining-aware line number
# XXX - this is not inlining aware
sym = Symbols.GetLineByOffset(self.ip)
if sym is not None:
self.source_file, self.line_no = sym
else:
self.source_file = None
self.line_no = None
self.basename = None
if self.source_file is not None:
self.basename = os.path.basename(self.source_file)
else:
self.basename = None
def __str__(self):
return "{}:{}({}) {}".format(
self.basename, self.line, self.descr, self.function_name
)
def main_on_stack(Symbols, frames):
module_name = Symbols.get_exefile_module_name()
main_name = "{}!main".format(module_name)
for x in frames:
if main_name in x.descr: # Could be less hard coded...
return True
return False
def probe_state(Client):
# Fetch the state of the program -- represented by the stack frames.
frames, numframes = Client.Control.GetStackTraceEx()
the_frames = [Frame(frames[x], x, Client.Symbols) for x in range(numframes)]
if not main_on_stack(Client.Symbols, the_frames):
return None
return the_frames
|
