Date: Wed, 13 Sep 2000 07:08:51 -0700 (PDT) From: Bruce Evans <bde@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 locore.s Message-ID: <200009131408.HAA48495@freefall.freebsd.org>
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bde 2000/09/13 07:08:50 PDT
Modified files:
sys/i386/i386 locore.s
Log:
Be more careful about cleaning up the stack after function calls early
in the boot. The cleanup must be done in one of the few ways that
db_numargs() understands, so that early backtraces in ddb don't underrun
the stack. The underruns caused reboots a few years ago when there
was an unmapped page above the stack (trapping to abort the command
doesn't work early).
Cleaned up some nearby code.
Revision Changes Path
1.138 +17 -12 src/sys/i386/i386/locore.s
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