opal_printf
void opal_printf(const char *fmt, ...);
opal_printf("r%d 0x%lx\r\n", i, frame->fixreg[i]);
opal_printf("ctr 0x%lx\r\n", frame->ctr);
opal_printf("xer 0x%lx\r\n", frame->xer);
opal_printf("cr 0x%lx\r\n", frame->cr);
opal_printf("lr 0x%lx\r\n", frame->lr);
opal_printf("srr0 0x%lx\r\n", frame->srr0);
opal_printf("srr1 0x%lx\r\n", frame->srr1);