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
|
// RUN: %clangxx -DSHARED %s -shared -o %T/get_module_and_offset_for_pc.so -fPIC
// RUN: %clangxx -DSO_DIR=\"%T\" -O0 %s -ldl -o %t
// RUN: %run %t 2>&1 | FileCheck %s
// UNSUPPORTED: i386-darwin
// XFAIL: android
// Tests __sanitizer_get_module_and_offset_for_pc.
#include <assert.h>
#include <dlfcn.h>
#include <sanitizer/common_interface_defs.h>
#include <stdio.h>
#ifdef SHARED
extern "C" {
int foo() { return 1; }
}
#else
void Test(void *pc, const char *name) {
char module_name[1024];
void *offset;
int ok = __sanitizer_get_module_and_offset_for_pc(
pc, module_name, sizeof(module_name), &offset);
if (!ok) {
printf("NOT FOUND %s: %p\n", name, pc);
} else {
printf("FOUND %s: %s %p\n", name, module_name, offset);
}
}
void TestCallerPc() { Test(__builtin_return_address(0), "callerpc"); }
void TestDlsym() {
void *handle = dlopen(SO_DIR "/get_module_and_offset_for_pc.so", RTLD_LAZY);
assert(handle);
void *foo = dlsym(handle, "foo");
assert(foo);
Test(foo, "foo");
dlclose(handle);
}
// Call __sanitizer_get_module_and_offset_for_pc lots of times
// to make sure it is not too slow.
void TestLoop() {
void *pc = __builtin_return_address(0);
char module_name[1024];
void *offset;
for (int i = 0; i < 1000000; ++i) {
__sanitizer_get_module_and_offset_for_pc(pc, module_name,
sizeof(module_name), &offset);
}
}
int main() {
Test(0, "null");
TestCallerPc();
TestDlsym();
TestLoop();
}
#endif
// CHECK: NOT FOUND null: {{.*}}
// CHECK-NEXT: FOUND callerpc: {{.*}}/get_module_and_offset_for_pc.cc.tmp {{.*}}
// CHECK-NEXT: FOUND foo: {{.*}}/get_module_and_offset_for_pc.so {{.*}}
|
