llvm-project/libunwind/test/libunwind_01.pass.cpp

145 lines
2.8 KiB
C++

// TODO: Investigate these failures
// XFAIL: asan, tsan, ubsan
// TODO: Investigate these failures on x86_64 macOS back deployment
// UNSUPPORTED: target=x86_64-apple-darwin{{.+}}
#include <libunwind.h>
#include <stdlib.h>
#include <string.h>
void backtrace(int lower_bound) {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
int n = 0;
do {
++n;
if (n > 100) {
abort();
}
} while (unw_step(&cursor) > 0);
if (n < lower_bound) {
abort();
}
}
void test1(int i) {
backtrace(i);
}
void test2(int i, int j) {
backtrace(i);
test1(j);
}
void test3(int i, int j, int k) {
backtrace(i);
test2(j, k);
}
void test_no_info() {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
unw_proc_info_t info;
int ret = unw_get_proc_info(&cursor, &info);
if (ret != UNW_ESUCCESS)
abort();
// Set the IP to an address clearly outside any function.
unw_set_reg(&cursor, UNW_REG_IP, (unw_word_t)0);
ret = unw_get_proc_info(&cursor, &info);
if (ret != UNW_ENOINFO)
abort();
}
void test_reg_names() {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
int max_reg_num = -100;
#if defined(__i386__)
max_reg_num = 7;
#elif defined(__x86_64__)
max_reg_num = 32;
#endif
const char prefix[] = "unknown";
for (int i = -2; i < max_reg_num; ++i) {
if (strncmp(prefix, unw_regname(&cursor, i), sizeof(prefix) - 1) == 0)
abort();
}
if (strncmp(prefix, unw_regname(&cursor, max_reg_num + 1),
sizeof(prefix) - 1) != 0)
abort();
}
#if defined(__x86_64__)
void test_reg_get_set() {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
for (int i = 0; i < 17; ++i) {
const unw_word_t set_value = 7;
if (unw_set_reg(&cursor, i, set_value) != UNW_ESUCCESS)
abort();
unw_word_t get_value = 0;
if (unw_get_reg(&cursor, i, &get_value) != UNW_ESUCCESS)
abort();
if (set_value != get_value)
abort();
}
}
void test_fpreg_get_set() {
unw_context_t context;
unw_getcontext(&context);
unw_cursor_t cursor;
unw_init_local(&cursor, &context);
// get/set is not implemented for x86_64 fpregs.
for (int i = 17; i < 33; ++i) {
const unw_fpreg_t set_value = 7;
if (unw_set_fpreg(&cursor, i, set_value) != UNW_EBADREG)
abort();
unw_fpreg_t get_value = 0;
if (unw_get_fpreg(&cursor, i, &get_value) != UNW_EBADREG)
abort();
}
}
#else
void test_reg_get_set() {}
void test_fpreg_get_set() {}
#endif
int main(int, char**) {
test1(1);
test2(1, 2);
test3(1, 2, 3);
test_no_info();
test_reg_names();
test_reg_get_set();
test_fpreg_get_set();
return 0;
}