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x86, asm, boot: Use CC_SET()/CC_OUT() in arch/x86/boot/boot.h

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Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
arch/x86/boot/boot.h.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1465414726-197858-10-git-send-email-hpa@linux.intel.com
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This commit is contained in:
H. Peter Anvin 2016-06-08 12:38:45 -07:00
parent 35ccfb7114
commit 66928b4eb9
1 changed files with 5 additions and 4 deletions
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9
arch/x86/boot/boot.h
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@ -24,6 +24,7 @@
#include <linux/types.h>
#include <linux/edd.h>
#include <asm/setup.h>
#include <asm/asm.h>
#include "bitops.h"
#include "ctype.h"
#include "cpuflags.h"
@ -179,15 +180,15 @@ static inline void wrgs32(u32 v, addr_t addr)
static inline bool memcmp_fs(const void *s1, addr_t s2, size_t len)
{
bool diff;
asm volatile("fs; repe; cmpsb; setnz %0"
: "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
asm volatile("fs; repe; cmpsb" CC_SET(nz)
: CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
return diff;
}
static inline bool memcmp_gs(const void *s1, addr_t s2, size_t len)
{
bool diff;
asm volatile("gs; repe; cmpsb; setnz %0"
: "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
asm volatile("gs; repe; cmpsb" CC_SET(nz)
: CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
return diff;
}