johnsonjh/duma

// Print a stacktrace on i386 with
// signal support (on Linux at least)
// Does not do symbol lookup.
// need to write binutils map file
// parser, or steal code from
// addr2line
void printStackTrace(void)
{
    volatile void *firstvar;
    char *frame, *pf, *eip;

    frame = ((char *)(&firstvar)) + 4;
    while(1)
    {
        eip = (char *)(*(int *)(frame + 4));
        if(!memcmp(eip, "\x58\xb8\x77\x00\x00\x00\xcd\x80", 8))
        {
            printf("Signal hander for signal %i\n", *(int *)(frame + 8));
            pf = (char *)(*(int *)(frame + 36));
            eip = (char *)(*(int *)(frame + 68));
        }
        else
        {
            pf = (char *)(*(int *)frame);
        }

        printf("Prev frame: %p, Prev EIP: %p\n", pf, eip);

        frame = pf;
        if(frame == NULL)
            break;
    }
}


// end