Date: Fri, 2 Feb 2001 02:20:30 -0800 (PST) From: Doug Rabson <dfr@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/include frame.h Message-ID: <200102021020.f12AKUQ25261@freefall.freebsd.org>
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dfr 2001/02/02 02:20:30 PST
Modified files:
sys/alpha/include frame.h
Log:
* Move exception_return to exception.s which is a more logical home for it.
* Optimise the return path for syscalls so that they only restore a minimal
set of registers instead of performing a full exception_return.
A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
Revision Changes Path
1.5 +7 -9 src/sys/alpha/include/frame.h
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