sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}()

This mirrors commit ff60fab71b
(x86: Use __builtin_memset and __builtin_memcpy for memset/memcpy)

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2009-12-10 23:32:10 -08:00
parent fb34035e7b
commit 4d14a45985
7 changed files with 6 additions and 112 deletions

View File

@@ -16,8 +16,6 @@
#ifdef __KERNEL__
extern void __memmove(void *,const void *,__kernel_size_t);
extern __kernel_size_t __memcpy(void *,const void *,__kernel_size_t);
extern __kernel_size_t __memset(void *,int,__kernel_size_t);
#ifndef EXPORT_SYMTAB_STROPS
@@ -32,82 +30,10 @@ extern __kernel_size_t __memset(void *,int,__kernel_size_t);
})
#define __HAVE_ARCH_MEMCPY
static inline void *__constant_memcpy(void *to, const void *from, __kernel_size_t n)
{
extern void __copy_1page(void *, const void *);
if(n <= 32) {
__builtin_memcpy(to, from, n);
} else if (((unsigned int) to & 7) != 0) {
/* Destination is not aligned on the double-word boundary */
__memcpy(to, from, n);
} else {
switch(n) {
case PAGE_SIZE:
__copy_1page(to, from);
break;
default:
__memcpy(to, from, n);
break;
}
}
return to;
}
static inline void *__nonconstant_memcpy(void *to, const void *from, __kernel_size_t n)
{
__memcpy(to, from, n);
return to;
}
#undef memcpy
#define memcpy(t, f, n) \
(__builtin_constant_p(n) ? \
__constant_memcpy((t),(f),(n)) : \
__nonconstant_memcpy((t),(f),(n)))
#define memcpy(t, f, n) __builtin_memcpy(t, f, n)
#define __HAVE_ARCH_MEMSET
static inline void *__constant_c_and_count_memset(void *s, char c, __kernel_size_t count)
{
extern void bzero_1page(void *);
extern __kernel_size_t __bzero(void *, __kernel_size_t);
if(!c) {
if(count == PAGE_SIZE)
bzero_1page(s);
else
__bzero(s, count);
} else {
__memset(s, c, count);
}
return s;
}
static inline void *__constant_c_memset(void *s, char c, __kernel_size_t count)
{
extern __kernel_size_t __bzero(void *, __kernel_size_t);
if(!c)
__bzero(s, count);
else
__memset(s, c, count);
return s;
}
static inline void *__nonconstant_memset(void *s, char c, __kernel_size_t count)
{
__memset(s, c, count);
return s;
}
#undef memset
#define memset(s, c, count) \
(__builtin_constant_p(c) ? (__builtin_constant_p(count) ? \
__constant_c_and_count_memset((s), (c), (count)) : \
__constant_c_memset((s), (c), (count))) \
: __nonconstant_memset((s), (c), (count)))
#define memset(s, c, count) __builtin_memset(s, c, count)
#define __HAVE_ARCH_MEMSCAN