Date: Wed, 31 Jan 2001 03:17:01 -0800 (PST) From: Doug Rabson <dfr@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/alpha exception.s genassym.c machdep.c swtch.s Message-ID: <200101311117.f0VBH1j60082@freefall.freebsd.org>
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dfr 2001/01/31 03:17:01 PST
Modified files:
sys/alpha/alpha exception.s genassym.c machdep.c swtch.s
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 +158 -5 src/sys/alpha/alpha/exception.s
1.23 +3 -1 src/sys/alpha/alpha/genassym.c
1.110 +6 -1 src/sys/alpha/alpha/machdep.c
1.21 +1 -111 src/sys/alpha/alpha/swtch.s
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