1// RUN: mkdir -p %t-dir
2// RUN: %clangxx -DSHARED %s -shared -o %t-dir/get_module_and_offset_for_pc.so -fPIC
3// RUN: %clangxx -DSO_DIR=\"%t-dir\" -O0 %s -o %t
4// RUN: %run %t 2>&1 | FileCheck %s
5
6// UNSUPPORTED: i386-darwin
7// XFAIL: android
8
9// Tests __sanitizer_get_module_and_offset_for_pc.
10
11#include <assert.h>
12#include <dlfcn.h>
13#include <sanitizer/common_interface_defs.h>
14#include <stdio.h>
15
16#ifdef SHARED
17extern "C" {
18int foo() { return 1; }
19}
20#else
21
22void Test(void *pc, const char *name) {
23 char module_name[1024];
24 void *offset = 0;
25 int ok = __sanitizer_get_module_and_offset_for_pc(
26 pc, module_path: module_name, module_path_len: sizeof(module_name), pc_offset: &offset);
27 if (!ok) {
28 printf(format: "NOT FOUND %s: %p\n", name, pc);
29 } else {
30 printf(format: "FOUND %s: %s %p\n", name, module_name, offset);
31 }
32}
33
34void TestCallerPc() { Test(pc: __builtin_return_address(0), name: "callerpc"); }
35
36void TestDlsym() {
37 void *handle = dlopen(SO_DIR "/get_module_and_offset_for_pc.so", RTLD_LAZY);
38 assert(handle);
39 void *foo = dlsym(handle: handle, name: "foo");
40 assert(foo);
41 Test(pc: foo, name: "foo");
42 dlclose(handle: handle);
43}
44
45// Call __sanitizer_get_module_and_offset_for_pc lots of times
46// to make sure it is not too slow.
47void TestLoop() {
48 void *pc = __builtin_return_address(0);
49 char module_name[1024];
50 void *offset;
51 for (int i = 0; i < 1000000; ++i) {
52 __sanitizer_get_module_and_offset_for_pc(pc, module_path: module_name,
53 module_path_len: sizeof(module_name), pc_offset: &offset);
54 }
55}
56
57int main() {
58 Test(pc: 0, name: "null");
59 TestCallerPc();
60 TestDlsym();
61 TestLoop();
62}
63#endif
64// CHECK: NOT FOUND null: {{.*}}
65// CHECK-NEXT: FOUND callerpc: {{.*}}/get_module_and_offset_for_pc.cpp.tmp {{.*}}
66// CHECK-NEXT: FOUND foo: {{.*}}/get_module_and_offset_for_pc.so {{.*}}
67

source code of compiler-rt/test/sanitizer_common/TestCases/get_module_and_offset_for_pc.cpp