Author: bde
Date: Sat Jun 2 09:59:27 2018
New Revision: 334528
URL: https://svnweb.freebsd.org/changeset/base/334528
Log:
Oops, the last minute reduction in the clobber list for i386
MCOUNT_OVERHEAD() in r334522 was too agressive. Only mcount exit
preserves %eax and %edx.
Modified:
head/sys/i386/include/profile.h
Modified: head/sys/i386/include/profile.h
==============================================================================
--- head/sys/i386/include/profile.h Sat Jun 2 08:46:09 2018
(r334527)
+++ head/sys/i386/include/profile.h Sat Jun 2 09:59:27 2018
(r334528)
@@ -64,7 +64,7 @@
__asm __volatile("pushl %0; call __mcount; popl %%ecx" \
: \
: "i" (label) \
- : "cx", "memory")
+ : "ax", "dx", "cx", "memory")
#define MEXITCOUNT_OVERHEAD()
\
__asm __volatile("call .mexitcount; 1:" \
: : \
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