mirror of https://gitee.com/openkylin/linux.git
m68k/m68knommu: merge MMU and non-MMU string.h
The MMU and non-MMU string.h varients (string_no.h and string_mm.h) and almost the same. Switch to using the string_mm.h one, merging in the necessary ColdFire support. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Greg Ungerer
Geert Uytterhoeven
parent
5bc5a70b62
commit
ea61bc461d
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@ -1,5 +1,133 @@
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#ifdef __uClinux__
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#include "string_no.h"
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#ifndef _M68K_STRING_H_
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#define _M68K_STRING_H_
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#include <linux/types.h>
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#include <linux/compiler.h>
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static inline size_t __kernel_strlen(const char *s)
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{
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const char *sc;
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for (sc = s; *sc++; )
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;
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return sc - s - 1;
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}
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static inline char *__kernel_strcpy(char *dest, const char *src)
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{
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char *xdest = dest;
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asm volatile ("\n"
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"1: move.b (%1)+,(%0)+\n"
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" jne 1b"
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: "+a" (dest), "+a" (src)
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: : "memory");
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return xdest;
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}
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#ifndef __IN_STRING_C
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#define __HAVE_ARCH_STRLEN
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#define strlen(s) (__builtin_constant_p(s) ? \
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__builtin_strlen(s) : \
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__kernel_strlen(s))
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#define __HAVE_ARCH_STRNLEN
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static inline size_t strnlen(const char *s, size_t count)
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{
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const char *sc = s;
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asm volatile ("\n"
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"1: subq.l #1,%1\n"
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" jcs 2f\n"
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" tst.b (%0)+\n"
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" jne 1b\n"
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" subq.l #1,%0\n"
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"2:"
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: "+a" (sc), "+d" (count));
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return sc - s;
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}
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#define __HAVE_ARCH_STRCPY
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#if __GNUC__ >= 4
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#define strcpy(d, s) (__builtin_constant_p(s) && \
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__builtin_strlen(s) <= 32 ? \
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__builtin_strcpy(d, s) : \
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__kernel_strcpy(d, s))
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#else
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#include "string_mm.h"
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#define strcpy(d, s) __kernel_strcpy(d, s)
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#endif
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#define __HAVE_ARCH_STRNCPY
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static inline char *strncpy(char *dest, const char *src, size_t n)
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{
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char *xdest = dest;
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asm volatile ("\n"
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" jra 2f\n"
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"1: move.b (%1),(%0)+\n"
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" jeq 2f\n"
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" addq.l #1,%1\n"
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"2: subq.l #1,%2\n"
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" jcc 1b\n"
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: "+a" (dest), "+a" (src), "+d" (n)
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: : "memory");
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return xdest;
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}
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#define __HAVE_ARCH_STRCAT
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#define strcat(d, s) ({ \
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char *__d = (d); \
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strcpy(__d + strlen(__d), (s)); \
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})
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#define __HAVE_ARCH_STRCHR
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static inline char *strchr(const char *s, int c)
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{
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char sc, ch = c;
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for (; (sc = *s++) != ch; ) {
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if (!sc)
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return NULL;
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}
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return (char *)s - 1;
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}
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#ifndef CONFIG_COLDFIRE
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#define __HAVE_ARCH_STRCMP
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static inline int strcmp(const char *cs, const char *ct)
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{
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char res;
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asm ("\n"
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"1: move.b (%0)+,%2\n" /* get *cs */
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" cmp.b (%1)+,%2\n" /* compare a byte */
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" jne 2f\n" /* not equal, break out */
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" tst.b %2\n" /* at end of cs? */
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" jne 1b\n" /* no, keep going */
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" jra 3f\n" /* strings are equal */
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"2: sub.b -(%1),%2\n" /* *cs - *ct */
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"3:"
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: "+a" (cs), "+a" (ct), "=d" (res));
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return res;
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}
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#define __HAVE_ARCH_MEMMOVE
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extern void *memmove(void *, const void *, __kernel_size_t);
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#define __HAVE_ARCH_MEMCMP
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extern int memcmp(const void *, const void *, __kernel_size_t);
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#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
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#endif /* CONFIG_COLDFIRE */
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#define __HAVE_ARCH_MEMSET
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extern void *memset(void *, int, __kernel_size_t);
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#define memset(d, c, n) __builtin_memset(d, c, n)
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#define __HAVE_ARCH_MEMCPY
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extern void *memcpy(void *, const void *, __kernel_size_t);
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#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
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#endif
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#endif /* _M68K_STRING_H_ */
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@ -1,131 +0,0 @@
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#ifndef _M68K_STRING_H_
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#define _M68K_STRING_H_
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#include <linux/types.h>
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#include <linux/compiler.h>
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static inline size_t __kernel_strlen(const char *s)
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{
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const char *sc;
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for (sc = s; *sc++; )
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;
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return sc - s - 1;
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}
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static inline char *__kernel_strcpy(char *dest, const char *src)
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{
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char *xdest = dest;
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asm volatile ("\n"
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"1: move.b (%1)+,(%0)+\n"
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" jne 1b"
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: "+a" (dest), "+a" (src)
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: : "memory");
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return xdest;
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}
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#ifndef __IN_STRING_C
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#define __HAVE_ARCH_STRLEN
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#define strlen(s) (__builtin_constant_p(s) ? \
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__builtin_strlen(s) : \
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__kernel_strlen(s))
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#define __HAVE_ARCH_STRNLEN
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static inline size_t strnlen(const char *s, size_t count)
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{
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const char *sc = s;
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asm volatile ("\n"
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"1: subq.l #1,%1\n"
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" jcs 2f\n"
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" tst.b (%0)+\n"
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" jne 1b\n"
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" subq.l #1,%0\n"
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"2:"
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: "+a" (sc), "+d" (count));
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return sc - s;
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}
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#define __HAVE_ARCH_STRCPY
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#if __GNUC__ >= 4
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#define strcpy(d, s) (__builtin_constant_p(s) && \
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__builtin_strlen(s) <= 32 ? \
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__builtin_strcpy(d, s) : \
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__kernel_strcpy(d, s))
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#else
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#define strcpy(d, s) __kernel_strcpy(d, s)
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#endif
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#define __HAVE_ARCH_STRNCPY
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static inline char *strncpy(char *dest, const char *src, size_t n)
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{
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char *xdest = dest;
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asm volatile ("\n"
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" jra 2f\n"
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"1: move.b (%1),(%0)+\n"
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" jeq 2f\n"
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" addq.l #1,%1\n"
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"2: subq.l #1,%2\n"
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" jcc 1b\n"
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: "+a" (dest), "+a" (src), "+d" (n)
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: : "memory");
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return xdest;
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}
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#define __HAVE_ARCH_STRCAT
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#define strcat(d, s) ({ \
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char *__d = (d); \
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strcpy(__d + strlen(__d), (s)); \
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})
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#define __HAVE_ARCH_STRCHR
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static inline char *strchr(const char *s, int c)
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{
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char sc, ch = c;
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for (; (sc = *s++) != ch; ) {
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if (!sc)
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return NULL;
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}
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return (char *)s - 1;
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}
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#define __HAVE_ARCH_STRCMP
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static inline int strcmp(const char *cs, const char *ct)
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{
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char res;
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asm ("\n"
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"1: move.b (%0)+,%2\n" /* get *cs */
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" cmp.b (%1)+,%2\n" /* compare a byte */
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" jne 2f\n" /* not equal, break out */
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" tst.b %2\n" /* at end of cs? */
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" jne 1b\n" /* no, keep going */
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" jra 3f\n" /* strings are equal */
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"2: sub.b -(%1),%2\n" /* *cs - *ct */
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"3:"
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: "+a" (cs), "+a" (ct), "=d" (res));
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return res;
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}
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#define __HAVE_ARCH_MEMSET
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extern void *memset(void *, int, __kernel_size_t);
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#define memset(d, c, n) __builtin_memset(d, c, n)
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#define __HAVE_ARCH_MEMCPY
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extern void *memcpy(void *, const void *, __kernel_size_t);
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#define memcpy(d, s, n) __builtin_memcpy(d, s, n)
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#define __HAVE_ARCH_MEMMOVE
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extern void *memmove(void *, const void *, __kernel_size_t);
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#define __HAVE_ARCH_MEMCMP
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extern int memcmp(const void *, const void *, __kernel_size_t);
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#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
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#endif
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#endif /* _M68K_STRING_H_ */
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@ -1,126 +0,0 @@
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#ifndef _M68KNOMMU_STRING_H_
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#define _M68KNOMMU_STRING_H_
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#ifdef __KERNEL__ /* only set these up for kernel code */
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#include <asm/setup.h>
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#include <asm/page.h>
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#define __HAVE_ARCH_STRCPY
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static inline char * strcpy(char * dest,const char *src)
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{
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char *xdest = dest;
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__asm__ __volatile__
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("1:\tmoveb %1@+,%0@+\n\t"
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"jne 1b"
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: "=a" (dest), "=a" (src)
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: "0" (dest), "1" (src) : "memory");
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return xdest;
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}
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#define __HAVE_ARCH_STRNCPY
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static inline char * strncpy(char *dest, const char *src, size_t n)
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{
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char *xdest = dest;
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if (n == 0)
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return xdest;
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__asm__ __volatile__
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("1:\tmoveb %1@+,%0@+\n\t"
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"jeq 2f\n\t"
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"subql #1,%2\n\t"
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"jne 1b\n\t"
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"2:"
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: "=a" (dest), "=a" (src), "=d" (n)
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: "0" (dest), "1" (src), "2" (n)
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: "memory");
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return xdest;
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}
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#ifndef CONFIG_COLDFIRE
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#define __HAVE_ARCH_STRCMP
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static inline int strcmp(const char * cs,const char * ct)
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{
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char __res;
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__asm__
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("1:\tmoveb %0@+,%2\n\t" /* get *cs */
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"cmpb %1@+,%2\n\t" /* compare a byte */
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"jne 2f\n\t" /* not equal, break out */
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"tstb %2\n\t" /* at end of cs? */
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"jne 1b\n\t" /* no, keep going */
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"jra 3f\n\t" /* strings are equal */
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"2:\tsubb %1@-,%2\n\t" /* *cs - *ct */
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"3:"
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: "=a" (cs), "=a" (ct), "=d" (__res)
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: "0" (cs), "1" (ct));
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return __res;
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}
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#define __HAVE_ARCH_STRNCMP
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static inline int strncmp(const char * cs,const char * ct,size_t count)
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{
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char __res;
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if (!count)
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return 0;
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__asm__
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("1:\tmovb %0@+,%3\n\t" /* get *cs */
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"cmpb %1@+,%3\n\t" /* compare a byte */
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"jne 3f\n\t" /* not equal, break out */
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"tstb %3\n\t" /* at end of cs? */
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"jeq 4f\n\t" /* yes, all done */
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"subql #1,%2\n\t" /* no, adjust count */
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"jne 1b\n\t" /* more to do, keep going */
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"2:\tmoveq #0,%3\n\t" /* strings are equal */
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"jra 4f\n\t"
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"3:\tsubb %1@-,%3\n\t" /* *cs - *ct */
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"4:"
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: "=a" (cs), "=a" (ct), "=d" (count), "=d" (__res)
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: "0" (cs), "1" (ct), "2" (count));
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return __res;
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}
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#endif /* CONFIG_COLDFIRE */
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#define __HAVE_ARCH_MEMSET
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extern void * memset(void * s, int c, size_t count);
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#define __HAVE_ARCH_MEMCPY
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extern void * memcpy(void *d, const void *s, size_t count);
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#else /* KERNEL */
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/*
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* let user libraries deal with these,
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* IMHO the kernel has no place defining these functions for user apps
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*/
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#define __HAVE_ARCH_STRCPY 1
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#define __HAVE_ARCH_STRNCPY 1
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#define __HAVE_ARCH_STRCAT 1
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#define __HAVE_ARCH_STRNCAT 1
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#define __HAVE_ARCH_STRCMP 1
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#define __HAVE_ARCH_STRNCMP 1
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#define __HAVE_ARCH_STRNICMP 1
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#define __HAVE_ARCH_STRCHR 1
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#define __HAVE_ARCH_STRRCHR 1
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#define __HAVE_ARCH_STRSTR 1
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#define __HAVE_ARCH_STRLEN 1
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#define __HAVE_ARCH_STRNLEN 1
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#define __HAVE_ARCH_MEMSET 1
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#define __HAVE_ARCH_MEMCPY 1
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#define __HAVE_ARCH_MEMMOVE 1
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#define __HAVE_ARCH_MEMSCAN 1
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#define __HAVE_ARCH_MEMCMP 1
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#define __HAVE_ARCH_MEMCHR 1
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#define __HAVE_ARCH_STRTOK 1
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#endif /* KERNEL */
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#endif /* _M68K_STRING_H_ */
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