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PR/45673 CVS commit: [netbsd-6-0] src/sys/arch/x86/include
The following reply was made to PR toolchain/45673; it has been noted by GNATS.
From: "Jeff Rizzo" <riz%netbsd.org@localhost>
Subject: PR/45673 CVS commit: [netbsd-6-0] src/sys/arch/x86/include
Date: Fri, 19 Oct 2012 17:33:38 +0000
Module Name: src
Committed By: riz
Date: Fri Oct 19 17:33:37 UTC 2012
src/sys/arch/x86/include [netbsd-6-0]: lock.h
Pull up following revision(s) (requested by apb in ticket #606):
sys/arch/x86/include/lock.h: revision 1.26
Change "=r" to "=qQ" in a register constraint in an asm statement
for a register that is used with the "xchgb" instruction in the
definition of __cpu_simple_lock_try(). This fixes PR 45673, or at
least works around the gcc bug that might be behind PR 45673.
The output from "objdump -d" before and after this change is
identical, for the amd64 GENERIC kernel, the i386 GENERIC kernel,
and the i386 MONOLITHIC kernel.
To generate a diff of this commit:
cvs rdiff -u -r1.25 -r220.127.116.11 src/sys/arch/x86/include/lock.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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