Date: Sun, 02 May 1999 07:57:51 +0900 From: Seigo TANIMURA <tanimura@naklab.dnj.ynu.ac.jp> To: freebsd-current@freebsd.org Cc: Seigo TANIMURA <tanimura@naklab.dnj.ynu.ac.jp> Subject: apmconf(8) -e ends to panic in apm_bios_call Message-ID: <19990502075751N.tanimura@sakuramail.com>
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Hi!
When I cvsuped, made and installed the new world and kernel on 1st May 1999,
the kernel paniced in apm_bios_call called from apmconf(8) -e...
[sys/i386/apm/apm_setup.s:_apm_bios_call]
movl 8(%ebp),%ecx
movl 4(%ebp),%ebx
movl 0(%ebp),%eax
pushl %ebp
lcall _apm_addr <--- paniced here
popl %ebp
movl %eax,0(%ebp)
Strangely, the kernel attaches the APM BIOS without any problem at all.
[a part of /var/log/messages with APM_DEBUG]
May 1 14:15:20 silver /kernel: apm0: <APM BIOS> on motherboard
May 1 14:15:20 silver /kernel: apm: APM BIOS version 0102
May 1 14:15:20 silver /kernel: apm: Code32 0xc00f0000, Code16 0xc00f0000, Data 0xc00fdbd0
May 1 14:15:20 silver /kernel: apm: Code entry 0x000078a8, Idling CPU disabled, Management enabled
May 1 14:15:20 silver /kernel: apm: CS32_limit=0x1e, CS16_limit=0x1e, DS_limit=0x66ae
May 1 14:15:20 silver /kernel: apm: Engaged control enabled
May 1 14:15:20 silver /kernel: apm: found APM BIOS version 1.2
May 1 14:15:20 silver /kernel: apm: Slow Idling CPU disabled
May 1 14:15:20 silver /kernel: Add hook "default suspend"
May 1 14:15:20 silver /kernel: Add hook "default resume"
May 1 14:15:20 silver /kernel: called apm_event_enable()
On attaching, apm_event_enable() calls apm_bios_call successfully.
I traced to watch _apm_addr, which pointed the correct entry(0x000078a8)
in both situations. The only one difference was CS... Has anyone got a clue?
Thanks in advance!
Seigo TANIMURA |M2, Nakagawa Lab, Dept of Electronics & CS
=========================|Faculty of Engineering, Yokohama National Univ
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(25th Apr 1999) & muesli.|tanimura@naklab.dnj.ynu.ac.jp tcarrot@sakuramail.com
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