linux-kernel - [PATCH] x86, asm, boot: Use CC_SET()/CC

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Message-Id: <20180629142844.15200-1-ubizjak@gmail.com>
Date:   Fri, 29 Jun 2018 16:28:44 +0200
From:   Uros Bizjak <ubizjak@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, Uros Bizjak <ubizjak@...il.com>
Subject: [PATCH] x86, asm, boot: Use CC_SET()/CC_OUT() in arch/x86/boot/

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

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
---
 arch/x86/boot/bitops.h | 3 ++-
 arch/x86/boot/string.c | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/boot/bitops.h b/arch/x86/boot/bitops.h
index 0d41d68131cc..2e1382486e91 100644
--- a/arch/x86/boot/bitops.h
+++ b/arch/x86/boot/bitops.h
@@ -17,6 +17,7 @@
 #define _LINUX_BITOPS_H		/* Inhibit inclusion of <linux/bitops.h> */
 
 #include <linux/types.h>
+#include <asm/asm.h>
 
 static inline bool constant_test_bit(int nr, const void *addr)
 {
@@ -28,7 +29,7 @@ static inline bool variable_test_bit(int nr, const void *addr)
 	bool v;
 	const u32 *p = (const u32 *)addr;
 
-	asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
+	asm("btl %2,%1" CC_SET(c) : CC_OUT(c) (v) : "m" (*p), "Ir" (nr));
 	return v;
 }
 
diff --git a/arch/x86/boot/string.c b/arch/x86/boot/string.c
index 16f49123d747..c4428a176973 100644
--- a/arch/x86/boot/string.c
+++ b/arch/x86/boot/string.c
@@ -13,6 +13,7 @@
  */
 
 #include <linux/types.h>
+#include <asm/asm.h>
 #include "ctype.h"
 #include "string.h"
 
@@ -28,8 +29,8 @@
 int memcmp(const void *s1, const void *s2, size_t len)
 {
 	bool diff;
-	asm("repe; cmpsb; setnz %0"
-	    : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm("repe; cmpsb" CC_SET(nz)
+	    : CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 
-- 
2.17.1