I was wondering if it was not a good idea to add some test suits to
assure the proper use of libunwind. The idea would be to have some more
complexes standalone tests that use libunwind after successfully
compiled and them run this tests and scripts that check the result for
each arch.
What do you people think of if?
I'm sending a very simple back trace test that I use in power, I have
other ones.
Thanks!
--
Jose Flavio Aguilar Paulino
([EMAIL PROTECTED])
System / Software Engineer
Toolchain Team
LTC, Linux Technology Center
IBM Brazil
#include <stdio.h>
#include <libunwind.h>
void show_stack_by_direct_access(long * stack_p, int num) {
long * cur_stack_p;
int i;
cur_stack_p = stack_p;
for(i = 0; i < num; i++) {
printf("0x%lx ", *cur_stack_p);
cur_stack_p = cur_stack_p - 1;
}
}
int third_function(int num, int num2) {
unw_cursor_t cursor;
unw_context_t context;
unw_proc_info_t proc_info;
int reg_ip_ok, reg_sp_ok, proc_name_ok;
size_t name_size = 255;
char name[255];
unw_word_t ip, sp;
unw_word_t greg;
printf("... the last parameters should be %i and %i.\n", num, num2);
printf("Back tracing...\n\n");
unw_tdep_getcontext(&context);
unw_init_local(&cursor, &context);
do {
proc_name_ok = unw_get_proc_name(&cursor, (char *)&name, name_size, NULL);
if(proc_name_ok == 0) {
printf("function %s(...)\n", name);
reg_ip_ok = unw_get_reg(&cursor, UNW_REG_IP, &ip);
reg_sp_ok = unw_get_reg(&cursor, UNW_REG_SP, &sp);
if(reg_ip_ok == 0 && reg_sp_ok == 0) {
printf("ip = 0x%lx, sp = 0x%lx\n",
(long) ip, (long) sp);
}
else {
printf("Error getting IP and/or SP register(s).");
}
printf("stack: ");
show_stack_by_direct_access((long *)sp, 8);
printf(" ...\n\n");
}
} while (unw_step(&cursor) > 0);
printf("backtrace finished.\n\n");
}
int second_function(int num, int num2) {
third_function(num + 1, num2 * 2);
}
int first_function(int num) {
second_function(num * 2, num + 1);
}
int main(int argc, char ** argv) {
int pid;
printf("Testing basic features of libunwind.\n");
first_function(2);
return 0;
}
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