/*
* db_panic: Called by panic(). May print a stack trace; may enter the
* kernel debugger; may just return so that panic() will continue to
* halt or reboot the system.
*/
void db_panic(void)
{
if (db_onpanic == 1)
Debugger();
else if (db_onpanic >= 0) {
static int intrace = 0;
if (intrace == 0) {
intrace = 1;
printf("cpu%u: Begin traceback...\n",
cpu_index(curcpu()));
db_stack_trace_print(
(db_expr_t)(intptr_t)__builtin_frame_address(0),
true, 65535, "", printf);
printf("cpu%u: End traceback...\n",
cpu_index(curcpu()));
intrace = 0;
} else
printf("Faulted in mid-traceback; aborting...");
if (db_onpanic == 2)
Debugger();
}
return;
}
void
db_stack_dump(void)
{
static int intrace;
if (intrace) {
printf("Faulted in traceback, aborting...\n");
return;
}
intrace = 1;
printf("Starting stack trace...\n");
db_stack_trace_print((db_expr_t)__builtin_frame_address(0), TRUE,
256 /* low limit */, "", printf);
printf("End of stack trace.\n");
intrace = 0;
}
void
db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
char *modif)
{
db_stack_trace_print(addr, have_addr, count, modif, db_printf);
}
