mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
144 lines
3.0 KiB
C
144 lines
3.0 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (c) 1994, 95, 96, 97, 98, 2000, 01 Ralf Baechle
|
|
* Copyright (c) 2000 by Silicon Graphics, Inc.
|
|
* Copyright (c) 2001 MIPS Technologies, Inc.
|
|
*/
|
|
#ifndef _ASM_STRING_H
|
|
#define _ASM_STRING_H
|
|
|
|
|
|
/*
|
|
* Most of the inline functions are rather naive implementations so I just
|
|
* didn't bother updating them for 64-bit ...
|
|
*/
|
|
#ifdef CONFIG_32BIT
|
|
|
|
#ifndef IN_STRING_C
|
|
|
|
#define __HAVE_ARCH_STRCPY
|
|
static __inline__ char *strcpy(char *__dest, __const__ char *__src)
|
|
{
|
|
char *__xdest = __dest;
|
|
|
|
__asm__ __volatile__(
|
|
".set\tnoreorder\n\t"
|
|
".set\tnoat\n"
|
|
"1:\tlbu\t$1,(%1)\n\t"
|
|
"addiu\t%1,1\n\t"
|
|
"sb\t$1,(%0)\n\t"
|
|
"bnez\t$1,1b\n\t"
|
|
"addiu\t%0,1\n\t"
|
|
".set\tat\n\t"
|
|
".set\treorder"
|
|
: "=r" (__dest), "=r" (__src)
|
|
: "0" (__dest), "1" (__src)
|
|
: "memory");
|
|
|
|
return __xdest;
|
|
}
|
|
|
|
#define __HAVE_ARCH_STRNCPY
|
|
static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n)
|
|
{
|
|
char *__xdest = __dest;
|
|
|
|
if (__n == 0)
|
|
return __xdest;
|
|
|
|
__asm__ __volatile__(
|
|
".set\tnoreorder\n\t"
|
|
".set\tnoat\n"
|
|
"1:\tlbu\t$1,(%1)\n\t"
|
|
"subu\t%2,1\n\t"
|
|
"sb\t$1,(%0)\n\t"
|
|
"beqz\t$1,2f\n\t"
|
|
"addiu\t%0,1\n\t"
|
|
"bnez\t%2,1b\n\t"
|
|
"addiu\t%1,1\n"
|
|
"2:\n\t"
|
|
".set\tat\n\t"
|
|
".set\treorder"
|
|
: "=r" (__dest), "=r" (__src), "=r" (__n)
|
|
: "0" (__dest), "1" (__src), "2" (__n)
|
|
: "memory");
|
|
|
|
return __xdest;
|
|
}
|
|
|
|
#define __HAVE_ARCH_STRCMP
|
|
static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct)
|
|
{
|
|
int __res;
|
|
|
|
__asm__ __volatile__(
|
|
".set\tnoreorder\n\t"
|
|
".set\tnoat\n\t"
|
|
"lbu\t%2,(%0)\n"
|
|
"1:\tlbu\t$1,(%1)\n\t"
|
|
"addiu\t%0,1\n\t"
|
|
"bne\t$1,%2,2f\n\t"
|
|
"addiu\t%1,1\n\t"
|
|
"bnez\t%2,1b\n\t"
|
|
"lbu\t%2,(%0)\n\t"
|
|
#if defined(CONFIG_CPU_R3000)
|
|
"nop\n\t"
|
|
#endif
|
|
"move\t%2,$1\n"
|
|
"2:\tsubu\t%2,$1\n"
|
|
"3:\t.set\tat\n\t"
|
|
".set\treorder"
|
|
: "=r" (__cs), "=r" (__ct), "=r" (__res)
|
|
: "0" (__cs), "1" (__ct));
|
|
|
|
return __res;
|
|
}
|
|
|
|
#endif /* !defined(IN_STRING_C) */
|
|
|
|
#define __HAVE_ARCH_STRNCMP
|
|
static __inline__ int
|
|
strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count)
|
|
{
|
|
int __res;
|
|
|
|
__asm__ __volatile__(
|
|
".set\tnoreorder\n\t"
|
|
".set\tnoat\n"
|
|
"1:\tlbu\t%3,(%0)\n\t"
|
|
"beqz\t%2,2f\n\t"
|
|
"lbu\t$1,(%1)\n\t"
|
|
"subu\t%2,1\n\t"
|
|
"bne\t$1,%3,3f\n\t"
|
|
"addiu\t%0,1\n\t"
|
|
"bnez\t%3,1b\n\t"
|
|
"addiu\t%1,1\n"
|
|
"2:\n\t"
|
|
#if defined(CONFIG_CPU_R3000)
|
|
"nop\n\t"
|
|
#endif
|
|
"move\t%3,$1\n"
|
|
"3:\tsubu\t%3,$1\n\t"
|
|
".set\tat\n\t"
|
|
".set\treorder"
|
|
: "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res)
|
|
: "0" (__cs), "1" (__ct), "2" (__count));
|
|
|
|
return __res;
|
|
}
|
|
#endif /* CONFIG_32BIT */
|
|
|
|
#define __HAVE_ARCH_MEMSET
|
|
extern void *memset(void *__s, int __c, size_t __count);
|
|
|
|
#define __HAVE_ARCH_MEMCPY
|
|
extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
|
|
|
|
#define __HAVE_ARCH_MEMMOVE
|
|
extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
|
|
|
|
#endif /* _ASM_STRING_H */
|