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Small performance optimization. Clobber only cr0, rather than the entire CR.

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Discussed with:	rdivacky,nwhitehorn
MFC after:	3 weeks
This commit is contained in:
Justin Hibbits 2014-04-11 06:17:44 +00:00
parent bdc8dbd208
commit 181ca73b1a
3 changed files with 21 additions and 21 deletions
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36
sys/powerpc/include/atomic.h
View File

@ -74,7 +74,7 @@
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_add_int */
#ifdef __powerpc64__
@ -86,7 +86,7 @@
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_add_long */
#else
#define __atomic_add_long(p, v, t) \
@ -97,7 +97,7 @@
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_add_long */
#endif
@ -160,7 +160,7 @@ _ATOMIC_ADD(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_clear_int */
#ifdef __powerpc64__
@ -172,7 +172,7 @@ _ATOMIC_ADD(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_clear_long */
#else
#define __atomic_clear_long(p, v, t) \
@ -183,7 +183,7 @@ _ATOMIC_ADD(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_clear_long */
#endif
@ -262,7 +262,7 @@ _ATOMIC_CLEAR(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_set_int */
#ifdef __powerpc64__
@ -274,7 +274,7 @@ _ATOMIC_CLEAR(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_set_long */
#else
#define __atomic_set_long(p, v, t) \
@ -285,7 +285,7 @@ _ATOMIC_CLEAR(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_set_long */
#endif
@ -348,7 +348,7 @@ _ATOMIC_SET(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_subtract_int */
#ifdef __powerpc64__
@ -360,7 +360,7 @@ _ATOMIC_SET(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_subtract_long */
#else
#define __atomic_subtract_long(p, v, t) \
@ -371,7 +371,7 @@ _ATOMIC_SET(long)
" bne- 1b\n" \
: "=&r" (t), "=m" (*p) \
: "r" (p), "r" (v), "m" (*p) \
: "cc", "memory") \
: "cr0", "memory") \
/* __atomic_subtract_long */
#endif
@ -444,7 +444,7 @@ atomic_readandclear_int(volatile u_int *addr)
"bne- 1b\n\t" /* spin if failed */
: "=&r"(result), "=&r"(temp), "=m" (*addr)
: "r" (addr), "m" (*addr)
: "cc", "memory");
: "cr0", "memory");
#endif
return (result);
@ -465,7 +465,7 @@ atomic_readandclear_long(volatile u_long *addr)
"bne- 1b\n\t" /* spin if failed */
: "=&r"(result), "=&r"(temp), "=m" (*addr)
: "r" (addr), "m" (*addr)
: "cc", "memory");
: "cr0", "memory");
#endif
return (result);
@ -568,7 +568,7 @@ atomic_cmpset_int(volatile u_int* p, u_int cmpval, u_int newval)
"3:\n\t"
: "=&r" (ret), "=m" (*p)
: "r" (p), "r" (cmpval), "r" (newval), "m" (*p)
: "cc", "memory");
: "cr0", "memory");
#endif
return (ret);
@ -604,7 +604,7 @@ atomic_cmpset_long(volatile u_long* p, u_long cmpval, u_long newval)
"3:\n\t"
: "=&r" (ret), "=m" (*p)
: "r" (p), "r" (cmpval), "r" (newval), "m" (*p)
: "cc", "memory");
: "cr0", "memory");
#endif
return (ret);
@ -695,7 +695,7 @@ atomic_swap_32(volatile u_int *p, u_int v)
" bne- 1b\n"
: "=&r" (prev), "+m" (*(volatile u_int *)p)
: "r" (p), "r" (v)
: "cc", "memory");
: "cr0", "memory");
return (prev);
}
@ -712,7 +712,7 @@ atomic_swap_64(volatile u_long *p, u_long v)
" bne- 1b\n"
: "=&r" (prev), "+m" (*(volatile u_long *)p)
: "r" (p), "r" (v)
: "cc", "memory");
: "cr0", "memory");
return (prev);
}

2
sys/powerpc/include/counter.h
View File

@ -95,7 +95,7 @@ counter_u64_add(counter_u64_t c, int64_t inc)
"bne- 1b"
: "=&b" (ccpu), "=&r" (old)
: "r" ((char *)c - (char *)&__pcpu[0]), "r" (inc)
: "cc", "memory");
: "cr0", "memory");
}
#else /* !64bit */

4
sys/powerpc/powerpc/copyinout.c
View File

@ -503,7 +503,7 @@ casuword32(volatile uint32_t *addr, uint32_t old, uint32_t new)
"3:\n\t"
: "=&r" (val), "=m" (*p)
: "r" (p), "r" (old), "r" (new), "m" (*p)
: "cc", "memory");
: "cr0", "memory");
td->td_pcb->pcb_onfault = NULL;
@ -551,7 +551,7 @@ casuword(volatile u_long *addr, u_long old, u_long new)
"3:\n\t"
: "=&r" (val), "=m" (*p)
: "r" (p), "r" (old), "r" (new), "m" (*p)
: "cc", "memory");
: "cr0", "memory");
td->td_pcb->pcb_onfault = NULL;