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-rw-r--r--linux/src/include/asm-i386/string-486.h702
1 files changed, 0 insertions, 702 deletions
diff --git a/linux/src/include/asm-i386/string-486.h b/linux/src/include/asm-i386/string-486.h
deleted file mode 100644
index 1a337ba..0000000
--- a/linux/src/include/asm-i386/string-486.h
+++ /dev/null
@@ -1,702 +0,0 @@
-#ifndef _I386_STRING_I486_H_
-#define _I386_STRING_I486_H_
-
-/*
- * This string-include defines all string functions as inline
- * functions. Use gcc. It also assumes ds=es=data space, this should be
- * normal. Most of the string-functions are rather heavily hand-optimized,
- * see especially strtok,strstr,str[c]spn. They should work, but are not
- * very easy to understand. Everything is done entirely within the register
- * set, making the functions fast and clean.
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Revised and optimized for i486/pentium
- * 1994/03/15 by Alberto Vignani/Davide Parodi @crf.it
- *
- * Split into 2 CPU specific files by Alan Cox to keep #ifdef noise down.
- */
-
-#define __HAVE_ARCH_STRCPY
-extern inline char * strcpy(char * dest,const char *src)
-{
-register char *tmp= (char *)dest;
-register char dummy;
-__asm__ __volatile__(
- "\n1:\t"
- "movb (%0),%b2\n\t"
- "incl %0\n\t"
- "movb %b2,(%1)\n\t"
- "incl %1\n\t"
- "testb %b2,%b2\n\t"
- "jne 1b"
- :"=r" (src), "=r" (tmp), "=q" (dummy)
- :"0" (src), "1" (tmp)
- :"memory");
-return dest;
-}
-
-#define __HAVE_ARCH_STRNCPY
-extern inline char * strncpy(char * dest,const char *src,size_t count)
-{
-register char *tmp= (char *)dest;
-register char dummy;
-if (count) {
-__asm__ __volatile__(
- "\n1:\t"
- "movb (%0),%b2\n\t"
- "incl %0\n\t"
- "movb %b2,(%1)\n\t"
- "incl %1\n\t"
- "decl %3\n\t"
- "je 3f\n\t"
- "testb %b2,%b2\n\t"
- "jne 1b\n\t"
- "2:\tmovb %b2,(%1)\n\t"
- "incl %1\n\t"
- "decl %3\n\t"
- "jne 2b\n\t"
- "3:"
- :"=r" (src), "=r" (tmp), "=q" (dummy), "=r" (count)
- :"0" (src), "1" (tmp), "3" (count)
- :"memory");
- } /* if (count) */
-return dest;
-}
-
-#define __HAVE_ARCH_STRCAT
-extern inline char * strcat(char * dest,const char * src)
-{
-register char *tmp = (char *)(dest-1);
-register char dummy;
-__asm__ __volatile__(
- "\n1:\tincl %1\n\t"
- "cmpb $0,(%1)\n\t"
- "jne 1b\n"
- "2:\tmovb (%2),%b0\n\t"
- "incl %2\n\t"
- "movb %b0,(%1)\n\t"
- "incl %1\n\t"
- "testb %b0,%b0\n\t"
- "jne 2b\n"
- :"=q" (dummy), "=r" (tmp), "=r" (src)
- :"1" (tmp), "2" (src)
- :"memory");
-return dest;
-}
-
-#define __HAVE_ARCH_STRNCAT
-extern inline char * strncat(char * dest,const char * src,size_t count)
-{
-register char *tmp = (char *)(dest-1);
-register char dummy;
-__asm__ __volatile__(
- "\n1:\tincl %1\n\t"
- "cmpb $0,(%1)\n\t"
- "jne 1b\n"
- "2:\tdecl %3\n\t"
- "js 3f\n\t"
- "movb (%2),%b0\n\t"
- "incl %2\n\t"
- "movb %b0,(%1)\n\t"
- "incl %1\n\t"
- "testb %b0,%b0\n\t"
- "jne 2b\n"
- "3:\txorb %b0,%b0\n\t"
- "movb %b0,(%1)\n\t"
- :"=q" (dummy), "=r" (tmp), "=r" (src), "=r" (count)
- :"1" (tmp), "2" (src), "3" (count)
- :"memory");
-return dest;
-}
-
-#define __HAVE_ARCH_STRCMP
-extern inline int strcmp(const char * cs,const char * ct)
-{
-register int __res;
-__asm__ __volatile__(
- "\n1:\tmovb (%1),%b0\n\t"
- "incl %1\n\t"
- "cmpb %b0,(%2)\n\t"
- "jne 2f\n\t"
- "incl %2\n\t"
- "testb %b0,%b0\n\t"
- "jne 1b\n\t"
- "xorl %k0,%k0\n\t"
- "jmp 3f\n"
- "2:\tmovl $1,%k0\n\t"
- "jb 3f\n\t"
- "negl %k0\n"
- "3:"
- :"=q" (__res), "=r" (cs), "=r" (ct)
- :"1" (cs), "2" (ct)
- : "memory" );
-return __res;
-}
-
-#define __HAVE_ARCH_STRNCMP
-extern inline int strncmp(const char * cs,const char * ct,size_t count)
-{
-register int __res;
-__asm__ __volatile__(
- "\n1:\tdecl %3\n\t"
- "js 2f\n\t"
- "movb (%1),%b0\n\t"
- "incl %1\n\t"
- "cmpb %b0,(%2)\n\t"
- "jne 3f\n\t"
- "incl %2\n\t"
- "testb %b0,%b0\n\t"
- "jne 1b\n"
- "2:\txorl %k0,%k0\n\t"
- "jmp 4f\n"
- "3:\tmovl $1,%k0\n\t"
- "jb 4f\n\t"
- "negl %k0\n"
- "4:"
- :"=q" (__res), "=r" (cs), "=r" (ct), "=r" (count)
- :"1" (cs), "2" (ct), "3" (count));
-return __res;
-}
-
-#define __HAVE_ARCH_STRCHR
-extern inline char * strchr(const char * s, int c)
-{
-register char * __res;
-__asm__ __volatile__(
- "movb %%al,%%ah\n"
- "1:\tmovb (%1),%%al\n\t"
- "cmpb %%ah,%%al\n\t"
- "je 2f\n\t"
- "incl %1\n\t"
- "testb %%al,%%al\n\t"
- "jne 1b\n\t"
- "xorl %1,%1\n"
- "2:\tmovl %1,%0\n\t"
- :"=a" (__res), "=r" (s)
- :"0" (c), "1" (s));
-return __res;
-}
-
-#define __HAVE_ARCH_STRRCHR
-extern inline char * strrchr(const char * s, int c)
-{
-register char * __res;
-__asm__ __volatile__(
- "cld\n\t"
- "movb %%al,%%ah\n"
- "1:\tlodsb\n\t"
- "cmpb %%ah,%%al\n\t"
- "jne 2f\n\t"
- "leal -1(%%esi),%0\n"
- "2:\ttestb %%al,%%al\n\t"
- "jne 1b"
- :"=d" (__res):"0" (0),"S" (s),"a" (c):"ax","si");
-return __res;
-}
-
-#define __HAVE_ARCH_STRSPN
-extern inline size_t strspn(const char * cs, const char * ct)
-{
-register char * __res;
-__asm__ __volatile__(
- "cld\n\t"
- "movl %4,%%edi\n\t"
- "repne\n\t"
- "scasb\n\t"
- "notl %%ecx\n\t"
- "decl %%ecx\n\t"
- "movl %%ecx,%%edx\n"
- "1:\tlodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne\n\t"
- "scasb\n\t"
- "je 1b\n"
- "2:\tdecl %0"
- :"=S" (__res):"a" (0),"c" (0xffffffff),"0" (cs),"g" (ct)
- :"ax","cx","dx","di");
-return __res-cs;
-}
-
-#define __HAVE_ARCH_STRCSPN
-extern inline size_t strcspn(const char * cs, const char * ct)
-{
-register char * __res;
-__asm__ __volatile__(
- "cld\n\t"
- "movl %4,%%edi\n\t"
- "repne\n\t"
- "scasb\n\t"
- "notl %%ecx\n\t"
- "decl %%ecx\n\t"
- "movl %%ecx,%%edx\n"
- "1:\tlodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne\n\t"
- "scasb\n\t"
- "jne 1b\n"
- "2:\tdecl %0"
- :"=S" (__res):"a" (0),"c" (0xffffffff),"0" (cs),"g" (ct)
- :"ax","cx","dx","di");
-return __res-cs;
-}
-
-#define __HAVE_ARCH_STRPBRK
-extern inline char * strpbrk(const char * cs,const char * ct)
-{
-register char * __res;
-__asm__ __volatile__(
- "cld\n\t"
- "movl %4,%%edi\n\t"
- "repne\n\t"
- "scasb\n\t"
- "notl %%ecx\n\t"
- "decl %%ecx\n\t"
- "movl %%ecx,%%edx\n"
- "1:\tlodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 2f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne\n\t"
- "scasb\n\t"
- "jne 1b\n\t"
- "decl %0\n\t"
- "jmp 3f\n"
- "2:\txorl %0,%0\n"
- "3:"
- :"=S" (__res):"a" (0),"c" (0xffffffff),"0" (cs),"g" (ct)
- :"ax","cx","dx","di");
-return __res;
-}
-
-#define __HAVE_ARCH_STRSTR
-extern inline char * strstr(const char * cs,const char * ct)
-{
-register char * __res;
-__asm__ __volatile__(
- "cld\n\t" \
- "movl %4,%%edi\n\t"
- "repne\n\t"
- "scasb\n\t"
- "notl %%ecx\n\t"
- "decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
- "movl %%ecx,%%edx\n"
- "1:\tmovl %4,%%edi\n\t"
- "movl %%esi,%%eax\n\t"
- "movl %%edx,%%ecx\n\t"
- "repe\n\t"
- "cmpsb\n\t"
- "je 2f\n\t" /* also works for empty string, see above */
- "xchgl %%eax,%%esi\n\t"
- "incl %%esi\n\t"
- "cmpb $0,-1(%%eax)\n\t"
- "jne 1b\n\t"
- "xorl %%eax,%%eax\n\t"
- "2:"
- :"=a" (__res):"0" (0),"c" (0xffffffff),"S" (cs),"g" (ct)
- :"cx","dx","di","si");
-return __res;
-}
-
-#define __HAVE_ARCH_STRLEN
-extern inline size_t strlen(const char * s)
-{
-/*
- * slightly slower on a 486, but with better chances of
- * register allocation
- */
-register char dummy, *tmp= (char *)s;
-__asm__ __volatile__(
- "\n1:\t"
- "movb\t(%0),%1\n\t"
- "incl\t%0\n\t"
- "testb\t%1,%1\n\t"
- "jne\t1b"
- :"=r" (tmp),"=q" (dummy)
- :"0" (s)
- : "memory" );
-return (tmp-s-1);
-}
-
-/* Added by Gertjan van Wingerde to make minix and sysv module work */
-#define __HAVE_ARCH_STRNLEN
-extern inline size_t strnlen(const char * s, size_t count)
-{
-register int __res;
-__asm__ __volatile__(
- "movl %1,%0\n\t"
- "jmp 2f\n"
- "1:\tcmpb $0,(%0)\n\t"
- "je 3f\n\t"
- "incl %0\n"
- "2:\tdecl %2\n\t"
- "cmpl $-1,%2\n\t"
- "jne 1b\n"
- "3:\tsubl %1,%0"
- :"=a" (__res)
- :"c" (s),"d" (count)
- :"dx");
-return __res;
-}
-/* end of additional stuff */
-
-#define __HAVE_ARCH_STRTOK
-extern inline char * strtok(char * s,const char * ct)
-{
-register char * __res;
-__asm__ __volatile__(
- "testl %1,%1\n\t"
- "jne 1f\n\t"
- "testl %0,%0\n\t"
- "je 8f\n\t"
- "movl %0,%1\n"
- "1:\txorl %0,%0\n\t"
- "movl $-1,%%ecx\n\t"
- "xorl %%eax,%%eax\n\t"
- "cld\n\t"
- "movl %4,%%edi\n\t"
- "repne\n\t"
- "scasb\n\t"
- "notl %%ecx\n\t"
- "decl %%ecx\n\t"
- "je 7f\n\t" /* empty delimiter-string */
- "movl %%ecx,%%edx\n"
- "2:\tlodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 7f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne\n\t"
- "scasb\n\t"
- "je 2b\n\t"
- "decl %1\n\t"
- "cmpb $0,(%1)\n\t"
- "je 7f\n\t"
- "movl %1,%0\n"
- "3:\tlodsb\n\t"
- "testb %%al,%%al\n\t"
- "je 5f\n\t"
- "movl %4,%%edi\n\t"
- "movl %%edx,%%ecx\n\t"
- "repne\n\t"
- "scasb\n\t"
- "jne 3b\n\t"
- "decl %1\n\t"
- "cmpb $0,(%1)\n\t"
- "je 5f\n\t"
- "movb $0,(%1)\n\t"
- "incl %1\n\t"
- "jmp 6f\n"
- "5:\txorl %1,%1\n"
- "6:\tcmpb $0,(%0)\n\t"
- "jne 7f\n\t"
- "xorl %0,%0\n"
- "7:\ttestl %0,%0\n\t"
- "jne 8f\n\t"
- "movl %0,%1\n"
- "8:"
- :"=b" (__res),"=S" (___strtok)
- :"0" (___strtok),"1" (s),"g" (ct)
- :"ax","cx","dx","di","memory");
-return __res;
-}
-
-#define __memcpy_c(d,s,count) \
-((count%4==0) ? \
- __memcpy_by4((d),(s),(count)) : \
- ((count%2==0) ? \
- __memcpy_by2((d),(s),(count)) : \
- __memcpy_g((d),(s),(count))))
-
-#define __HAVE_ARCH_MEMCPY
-#define memcpy(d,s,count) \
-(count == 0 \
- ? d \
- : __builtin_constant_p(count) \
- ? __memcpy_c((d),(s),(count)) \
- : __memcpy_g((d),(s),(count)))
-
-/*
- * These ought to get tweaked to do some cache priming.
- */
-
-extern inline void * __memcpy_by4(void * to, const void * from, size_t n)
-{
-register void *tmp = (void *)to;
-register int dummy1,dummy2;
-__asm__ __volatile__ (
- "\n1:\tmovl (%2),%0\n\t"
- "addl $4,%2\n\t"
- "movl %0,(%1)\n\t"
- "addl $4,%1\n\t"
- "decl %3\n\t"
- "jnz 1b"
- :"=r" (dummy1), "=r" (tmp), "=r" (from), "=r" (dummy2)
- :"1" (tmp), "2" (from), "3" (n/4)
- :"memory");
-return to;
-}
-
-extern inline void * __memcpy_by2(void * to, const void * from, size_t n)
-{
-register void *tmp = (void *)to;
-register int dummy1,dummy2;
-__asm__ __volatile__ (
- "shrl $1,%3\n\t"
- "jz 2f\n" /* only a word */
- "1:\tmovl (%2),%0\n\t"
- "addl $4,%2\n\t"
- "movl %0,(%1)\n\t"
- "addl $4,%1\n\t"
- "decl %3\n\t"
- "jnz 1b\n"
- "2:\tmovw (%2),%w0\n\t"
- "movw %w0,(%1)"
- :"=r" (dummy1), "=r" (tmp), "=r" (from), "=r" (dummy2)
- :"1" (tmp), "2" (from), "3" (n/2)
- :"memory");
-return to;
-}
-
-extern inline void * __memcpy_g(void * to, const void * from, size_t n)
-{
-register void *tmp = (void *)to;
-__asm__ __volatile__ (
- "cld\n\t"
- "shrl $1,%%ecx\n\t"
- "jnc 1f\n\t"
- "movsb\n"
- "1:\tshrl $1,%%ecx\n\t"
- "jnc 2f\n\t"
- "movsw\n"
- "2:\trep\n\t"
- "movsl"
- : /* no output */
- :"c" (n),"D" ((long) tmp),"S" ((long) from)
- :"cx","di","si","memory");
-return to;
-}
-
-
-#define __HAVE_ARCH_MEMMOVE
-extern inline void * memmove(void * dest,const void * src, size_t n)
-{
-register void *tmp = (void *)dest;
-if (dest<src)
-__asm__ __volatile__ (
- "cld\n\t"
- "rep\n\t"
- "movsb"
- : /* no output */
- :"c" (n),"S" (src),"D" (tmp)
- :"cx","si","di");
-else
-__asm__ __volatile__ (
- "std\n\t"
- "rep\n\t"
- "movsb\n\t"
- "cld\n\t"
- : /* no output */
- :"c" (n), "S" (n-1+(const char *)src), "D" (n-1+(char *)tmp)
- :"cx","si","di","memory");
-return dest;
-}
-
-extern inline int memcmp(const void * cs,const void * ct,size_t count)
-{
-register int __res;
-__asm__ __volatile__(
- "cld\n\t"
- "repe\n\t"
- "cmpsb\n\t"
- "je 1f\n\t"
- "sbbl %0,%0\n\t"
- "orb $1,%b0\n"
- "1:"
- :"=abd" (__res):"0" (0),"S" (cs),"D" (ct),"c" (count)
- :"si","di","cx");
-return __res;
-}
-
-#define __HAVE_ARCH_MEMCHR
-extern inline void * memchr(const void * cs,int c,size_t count)
-{
-register void * __res;
-if (!count)
- return NULL;
-__asm__ __volatile__(
- "cld\n\t"
- "repne\n\t"
- "scasb\n\t"
- "je 1f\n\t"
- "movl $1,%0\n"
- "1:\tdecl %0"
- :"=D" (__res):"a" (c),"D" (cs),"c" (count)
- :"cx");
-return __res;
-}
-
-#define __memset_cc(s,c,count) \
-((count%4==0) ? \
- __memset_cc_by4((s),(c),(count)) : \
- ((count%2==0) ? \
- __memset_cc_by2((s),(c),(count)) : \
- __memset_cg((s),(c),(count))))
-
-#define __memset_gc(s,c,count) \
-((count%4==0) ? \
- __memset_gc_by4((s),(c),(count)) : \
- ((count%2==0) ? \
- __memset_gc_by2((s),(c),(count)) : \
- __memset_gg((s),(c),(count))))
-
-#define __HAVE_ARCH_MEMSET
-#define memset(s,c,count) \
-(count == 0 \
- ? s \
- : __builtin_constant_p(c) \
- ? __builtin_constant_p(count) \
- ? __memset_cc((s),(c),(count)) \
- : __memset_cg((s),(c),(count)) \
- : __builtin_constant_p(count) \
- ? __memset_gc((s),(c),(count)) \
- : __memset_gg((s),(c),(count)))
-
-extern inline void * __memset_cc_by4(void * s, char c, size_t count)
-{
-/*
- * register char *tmp = s;
- */
-register char *tmp = (char *)s;
-register int dummy;
-__asm__ __volatile__ (
- "\n1:\tmovl %2,(%0)\n\t"
- "addl $4,%0\n\t"
- "decl %1\n\t"
- "jnz 1b"
- :"=r" (tmp), "=r" (dummy)
- :"r" (0x01010101UL * (unsigned char) c), "0" (tmp), "1" (count/4)
- :"memory");
-return s;
-}
-
-extern inline void * __memset_cc_by2(void * s, char c, size_t count)
-{
-register void *tmp = (void *)s;
-register int dummy;
-__asm__ __volatile__ (
- "shrl $1,%1\n\t" /* may be divisible also by 4 */
- "jz 2f\n"
- "\n1:\tmovl %2,(%0)\n\t"
- "addl $4,%0\n\t"
- "decl %1\n\t"
- "jnz 1b\n"
- "2:\tmovw %w2,(%0)"
- :"=r" (tmp), "=r" (dummy)
- :"r" (0x01010101UL * (unsigned char) c), "0" (tmp), "1" (count/2)
- :"memory");
-return s;
-}
-
-extern inline void * __memset_gc_by4(void * s, char c, size_t count)
-{
-register void *tmp = (void *)s;
-register int dummy;
-__asm__ __volatile__ (
- "movb %b0,%h0\n"
- "pushw %w0\n\t"
- "shll $16,%k0\n\t"
- "popw %w0\n"
- "1:\tmovl %k0,(%1)\n\t"
- "addl $4,%1\n\t"
- "decl %2\n\t"
- "jnz 1b\n"
- :"=q" (c), "=r" (tmp), "=r" (dummy)
- :"0" ((unsigned) c), "1" (tmp), "2" (count/4)
- :"memory");
-return s;
-}
-
-extern inline void * __memset_gc_by2(void * s, char c, size_t count)
-{
-register void *tmp = (void *)s;
-register int dummy1,dummy2;
-__asm__ __volatile__ (
- "movb %b0,%h0\n\t"
- "shrl $1,%2\n\t" /* may be divisible also by 4 */
- "jz 2f\n\t"
- "pushw %w0\n\t"
- "shll $16,%k0\n\t"
- "popw %w0\n"
- "1:\tmovl %k0,(%1)\n\t"
- "addl $4,%1\n\t"
- "decl %2\n\t"
- "jnz 1b\n"
- "2:\tmovw %w0,(%1)"
- :"=q" (dummy1), "=r" (tmp), "=r" (dummy2)
- :"0" ((unsigned) c), "1" (tmp), "2" (count/2)
- :"memory");
-return s;
-}
-
-extern inline void * __memset_cg(void * s, char c, size_t count)
-{
-register void *tmp = (void *)s;
-__asm__ __volatile__ (
- "shrl $1,%%ecx\n\t"
- "cld\n\t"
- "rep\n\t"
- "stosw\n\t"
- "jnc 1f\n\t"
- "movb %%al,(%%edi)\n"
- "1:"
- : /* no output */
- :"c" (count),"D" (tmp), "a" (0x0101U * (unsigned char) c)
- :"cx","di","memory");
-return s;
-}
-
-extern inline void * __memset_gg(void * s,char c,size_t count)
-{
-register void *tmp = (void *)s;
-__asm__ __volatile__ (
- "movb %%al,%%ah\n\t"
- "shrl $1,%%ecx\n\t"
- "cld\n\t"
- "rep\n\t"
- "stosw\n\t"
- "jnc 1f\n\t"
- "movb %%al,(%%edi)\n"
- "1:"
- : /* no output */
- :"c" (count),"D" (tmp), "a" (c)
- :"cx","di","memory");
-return s;
-}
-
-
-/*
- * find the first occurrence of byte 'c', or 1 past the area if none
- */
-#define __HAVE_ARCH_MEMSCAN
-extern inline void * memscan(void * addr, int c, size_t size)
-{
- if (!size)
- return addr;
- __asm__("cld
- repnz; scasb
- jnz 1f
- dec %%edi
-1: "
- : "=D" (addr), "=c" (size)
- : "0" (addr), "1" (size), "a" (c));
- return addr;
-}
-
-#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 05:28:20 +0000