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x86/boot: Use CC_SET()/CC_OUT() instead of open coding it

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Remove open-coded uses of set instructions with CC_SET()/CC_OUT().

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20180629142844.15200-1-ubizjak@gmail.com
This commit is contained in:
Uros Bizjak 2018-06-29 16:28:44 +02:00 • committed by Thomas Gleixner
parent 5db1b1e1ee
commit 216a37202f
2 changed files with 5 additions and 3 deletions
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3
arch/x86/boot/bitops.h
View file

@ -17,6 +17,7 @@
#define _LINUX_BITOPS_H /* Inhibit inclusion of <linux/bitops.h> */ #define _LINUX_BITOPS_H /* Inhibit inclusion of <linux/bitops.h> */
#include <linux/types.h> #include <linux/types.h>
#include <asm/asm.h>
static inline bool constant_test_bit(int nr, const void *addr) 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; bool v;
const u32 *p = (const u32 *)addr; 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; return v;
} }

5
arch/x86/boot/string.c
View file

@ -13,6 +13,7 @@
*/ */
#include <linux/types.h> #include <linux/types.h>
#include <asm/asm.h>
#include "ctype.h" #include "ctype.h"
#include "string.h" #include "string.h"
@ -28,8 +29,8 @@
int memcmp(const void *s1, const void *s2, size_t len) int memcmp(const void *s1, const void *s2, size_t len)
{ {
bool diff; bool diff;
asm("repe; cmpsb; setnz %0" asm("repe; cmpsb" CC_SET(nz)
: "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); : CC_OUT(nz) (diff), "+D" (s1), "+S" (s2), "+c" (len));
return diff; return diff;
} }