Date: Fri, 19 Jul 2002 17:23:30 -0400 (EDT) From: Andy <andy@wantpackets.com> To: freebsd-ppc@freebsd.org Subject: debug output Message-ID: <1027113810.3d38835229cdb@www.wantpackets.com>
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Hello Peter G,
I put a breakpoint in panic, and was able to get a useful
debug output..
init died (signal 6, exit 0)
Breakpoint 1, panic (fmt=0x262610 "Going nowhere without my init!") at
machine/cpufunc.h:154
154 __asm ("mfsprg %0, 0" : "=r"(ret));
(gdb) where
#0 panic (fmt=0x262610 "Going nowhere without my init!") at machine/cpufunc.h:154
#1 0x00171fc4 in exit1 (td=0xe00d4000, rv=-482334504) at
../../../kern/kern_exit.c:182
#2 0x001710e8 in execve (td=0xe00d4000, uap=0xe3402d50) at
../../../kern/kern_exec.c:539
#3 0x00165010 in start_init (dummy=0x262610) at ../../../kern/init_main.c:627
#4 0x00174ae0 in fork_exit (callout=0x164bd4 <start_init>, arg=0x0,
frame=0xe3402ddc)
at ../../../kern/kern_fork.c:861
#5 0x0025309c in fork_trampoline () at ../../../powerpc/powerpc/swtch.s:153
#6 0x7c0802a6 in ?? ()
Now, let me peek in line 539 and the relevent info on 193 or so, and show you:
(file kern_exec.c)
under "exec_fail:" there is
if (imgp->vmspace_destroyed) {
/* sorry, no more process anymore. exit gracefully */
exit1(td, W_EXITCODE(0, SIGABRT));
/* NOT REACHED */
error = 0;
}
"exec_fail:" is jumped to by the statement in 193 or so which says:
imgp->stringbase = (char *)kmem_alloc_wait(exec_map, ARG_MAX + PAGE_SIZE);
if (imgp->stringbase == NULL) {
error = ENOMEM;
mtx_lock(&Giant);
goto exec_fail;
}
Just for your entertainment, you should know I am using gcc 3.1 for this
stuff. Any ideas?
thanks,
andrew
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