Author: dim
Date: Wed Nov 24 18:35:11 2010
New Revision: 215801
URL: http://svn.freebsd.org/changeset/base/215801
Log:
Change ambiguous (or invalid, depending on how strict you want to be :)
assembly instruction "movw %rcx,2(%rax)" to "movw %cx,2(%rax)", since
the intent was to move 16 bits of data, in this case.
Found by: clang
Reviewed by: kib
Modified:
head/sys/amd64/amd64/cpu_switch.S
Modified: head/sys/amd64/amd64/cpu_switch.S
==============================================================================
--- head/sys/amd64/amd64/cpu_switch.S Wed Nov 24 16:02:58 2010
(r215800)
+++ head/sys/amd64/amd64/cpu_switch.S Wed Nov 24 18:35:11 2010
(r215801)
@@ -276,7 +276,7 @@ load_dr:
do_tss: movq %rdx,PCPU(TSSP)
movq %rdx,%rcx
movq PCPU(TSS),%rax
- movw %rcx,2(%rax)
+ movw %cx,2(%rax)
shrq $16,%rcx
movb %cl,4(%rax)
shrq $8,%rcx
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