Author: ian
Date: Sun Mar 29 17:30:08 2020
New Revision: 359423
URL: https://svnweb.freebsd.org/changeset/base/359423
Log:
Add a missing suffix that was causing a whole word to get loaded instead
of the proper 8 or 16 bits when the macro was expanded for those sizes.
Fixes a hang in the armv7 kernel.
Submitted by: Thomas Skibo
Pointy hat: ian@
Modified:
head/sys/arm/include/atomic-v6.h
Modified: head/sys/arm/include/atomic-v6.h
==============================================================================
--- head/sys/arm/include/atomic-v6.h Sun Mar 29 15:43:00 2020
(r359422)
+++ head/sys/arm/include/atomic-v6.h Sun Mar 29 17:30:08 2020
(r359423)
@@ -196,7 +196,7 @@ ATOMIC_ACQ_REL_LONG(clear)
\
__asm __volatile( \
"1: ldrex" SUF " %[tmp], [%[ptr]] \n" \
- " ldr %[ret], [%[oldv]] \n" \
+ " ldr" SUF " %[ret], [%[oldv]] \n" \
" teq %[tmp], %[ret] \n" \
" ittee ne \n" \
" str" SUF "ne %[tmp], [%[oldv]] \n" \
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