[coreboot-gerrit] New patch to review for coreboot: 18f6ebf add memory clobber to ins{b, w, l}

[Gerd Hoffmann (kraxel@redhat.com)]

Gerd Hoffmann (kraxel at redhat.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4033

-gerrit

commit 18f6ebfa4ebcdc10654cdd356bbba773b8153188
Author: Gerd Hoffmann <kraxel at redhat.com>
Date:   Thu Nov 7 16:51:24 2013 +0100

    add memory clobber to ins{b,w,l}
    
    Change-Id: Ia710eb59f23a52afba2a8ef6e0ff2b2306107245
    Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 src/arch/x86/include/arch/io.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/arch/x86/include/arch/io.h b/src/arch/x86/include/arch/io.h
index 50264f6..955d8e2 100644
--- a/src/arch/x86/include/arch/io.h
+++ b/src/arch/x86/include/arch/io.h
@@ -113,6 +113,7 @@ static inline void insb(uint16_t port, void *addr, unsigned long count)
 		"cld ; rep ; insb "
 		: "=D" (addr), "=c" (count)
 		: "d"(port), "0"(addr), "1" (count)
+		: "memory"
 		);
 }
 
@@ -122,6 +123,7 @@ static inline void insw(uint16_t port, void *addr, unsigned long count)
 		"cld ; rep ; insw "
 		: "=D" (addr), "=c" (count)
 		: "d"(port), "0"(addr), "1" (count)
+		: "memory"
 		);
 }
 
@@ -131,6 +133,7 @@ static inline void insl(uint16_t port, void *addr, unsigned long count)
 		"cld ; rep ; insl "
 		: "=D" (addr), "=c" (count)
 		: "d"(port), "0"(addr), "1" (count)
+		: "memory"
 		);
 }