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Redefine the memset/memmove/bcopy/bzero/memset macros to use more agressive 

constraints in their inline asm.  Gcc generates much better code now.
This commit is contained in:
matt 2001-01-02 04:03:42 +00:00
parent 834e92eedc
commit 4622cfafe0
1 changed files with 21 additions and 21 deletions
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42
sys/arch/vax/include/macros.h
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@ -1,4 +1,4 @@
/* $NetBSD: macros.h,v 1.21 2000/08/27 00:21:46 matt Exp $ */ /* $NetBSD: macros.h,v 1.22 2001/01/02 04:03:42 matt Exp $ */
/* /*
* Copyright (c) 1994, 1998, 2000 Ludd, University of Lule}, Sweden. * Copyright (c) 1994, 1998, 2000 Ludd, University of Lule}, Sweden.
@ -42,10 +42,10 @@ ffs(int reg)
{ {
register int val; register int val;
__asm__ __volatile ("ffs $0,$32,%1,%0 __asm__ __volatile ("ffs $0,$32,%1,%0
bneq 1f bneq 1f
mnegl $1,%0 mnegl $1,%0
1: incl %0" 1: incl %0"
: "=&r" (val) : "=&r" (val)
: "r" (reg) ); : "r" (reg) );
return val; return val;
@ -63,37 +63,37 @@ _remque(void *p)
static __inline__ void static __inline__ void
_insque(void *p, void *q) _insque(void *p, void *q)
{ {
__asm__ __volatile ("insque (%0), (%1)" __asm__ __volatile ("insque (%0),(%1)"
: :
: "r" (p),"r" (q) : "r" (p),"r" (q)
: "memory" ); : "memory" );
} }
static __inline__ void * static __inline__ void *
memcpy(void *toe, const void *from, size_t len) memcpy(void *to, const void *from, size_t len)
{ {
__asm__ __volatile ("movc3 %0,(%1),(%2)" __asm__ __volatile ("movc3 %0,%1,%2"
: :
: "r" (len),"r" (from),"r"(toe) : "g" (len), "m" (*(char *)from), "m" (*(char *)to)
:"r0","r1","r2","r3","r4","r5","memory","cc"); :"r0","r1","r2","r3","r4","r5","memory","cc");
return toe; return to;
} }
static __inline__ void * static __inline__ void *
memmove(void *toe, const void *from, size_t len) memmove(void *to, const void *from, size_t len)
{ {
__asm__ __volatile ("movc3 %0,(%1),(%2)" __asm__ __volatile ("movc3 %0,%1,%2"
: :
: "r" (len),"r" (from),"r"(toe) : "g" (len), "m" (*(char *)from), "m" (*(char *)to)
:"r0","r1","r2","r3","r4","r5","memory","cc"); :"r0","r1","r2","r3","r4","r5","memory","cc");
return toe; return to;
} }
static __inline__ void static __inline__ void
bcopy(const void *from, void *toe, size_t len) bcopy(const void *from, void *to, size_t len)
{ {
__asm__ __volatile ("movc3 %0,(%1),(%2)" __asm__ __volatile ("movc3 %0,%1,%2"
: :
: "r" (len),"r" (from),"r"(toe) : "g" (len), "m" (*(char *)from), "m" (*(char *)to)
:"r0","r1","r2","r3","r4","r5","memory","cc"); :"r0","r1","r2","r3","r4","r5","memory","cc");
} }
@ -105,9 +105,9 @@ memset(void *block, int c, size_t len)
if (len > 65535) if (len > 65535)
blkclr(block, len); blkclr(block, len);
else { else {
__asm__ __volatile ("movc5 $0,(%0),%2,%1,(%0)" __asm__ __volatile ("movc5 $0,(sp),%2,%1,%0"
: :
: "r" (block), "r" (len), "r"(c) : "m" (*(char *)block), "g" (len), "g" (c)
:"r0","r1","r2","r3","r4","r5","memory","cc"); :"r0","r1","r2","r3","r4","r5","memory","cc");
} }
return block; return block;
@ -119,9 +119,9 @@ bzero(void *block, size_t len)
if (len > 65535) if (len > 65535)
blkclr(block, len); blkclr(block, len);
else { else {
__asm__ __volatile ("movc5 $0,(%0),$0,%1,(%0)" __asm__ __volatile ("movc5 $0,(sp),$0,%1,%0"
: :
: "r" (block), "r" (len) : "m" (*(char *)block), "g" (len)
:"r0","r1","r2","r3","r4","r5","memory","cc"); :"r0","r1","r2","r3","r4","r5","memory","cc");
} }
} }