Author: kib
Date: Sun Sep 11 18:00:46 2011
New Revision: 225483
URL: http://svn.freebsd.org/changeset/base/225483
Log:
The jump target shall be after the padding, not into it.
Reported by: alc
Approved by: re (bz)
MFC after: 2 weeks
Modified:
head/sys/amd64/amd64/exception.S
Modified: head/sys/amd64/amd64/exception.S
==============================================================================
--- head/sys/amd64/amd64/exception.S Sun Sep 11 17:39:51 2011
(r225482)
+++ head/sys/amd64/amd64/exception.S Sun Sep 11 18:00:46 2011
(r225483)
@@ -398,8 +398,9 @@ IDTVEC(fast_syscall)
movq %rsp, %rdi
call ast
jmp 1b
-2: /* Restore preserved registers. */
+
.align 16
+2: /* Restore preserved registers. */
MEXITCOUNT
movq TF_RDI(%rsp),%rdi /* bonus; preserve arg 1 */
movq TF_RSI(%rsp),%rsi /* bonus: preserve arg 2 */
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