diff options
author | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2003-03-12 00:15:31 +0000 |
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committer | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2003-03-12 00:15:31 +0000 |
commit | ee53d3b8685245febda44ac761877871ec4cd0f4 (patch) | |
tree | 67e5392c3f16c0716b3ca8356cd93cd244b58d4b /xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h | |
parent | 7c2ffc6c5043e0a49fbe1b81f9da465ec68a9e64 (diff) | |
download | xen-ee53d3b8685245febda44ac761877871ec4cd0f4.tar.gz xen-ee53d3b8685245febda44ac761877871ec4cd0f4.tar.bz2 xen-ee53d3b8685245febda44ac761877871ec4cd0f4.zip |
bitkeeper revision 1.122.1.5 (3e6e7c23wQxW8Ugs0UKsqigrHkcXQg)
mkbuildtree:
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Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h')
-rw-r--r-- | xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h | 617 |
1 files changed, 0 insertions, 617 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h deleted file mode 100644 index 51bfd051bc..0000000000 --- a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h +++ /dev/null @@ -1,617 +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. - * - * 1999/10/5 Proper register args for newer GCCs and minor bugs - * fixed - Petko Manolov (petkan@spct.net) - * 1999/10/14 3DNow memscpy() added - Petkan - * 2000/05/09 extern changed to static in function definitions - * and a few cleanups - Petkan - */ - -#define __HAVE_ARCH_STRCPY -static inline char * strcpy(char * dest,const char *src) -{ -register char *tmp= (char *)dest; -register char dummy; -__asm__ __volatile__( - "\n1:\t" - "movb (%0),%2\n\t" - "incl %0\n\t" - "movb %2,(%1)\n\t" - "incl %1\n\t" - "testb %2,%2\n\t" - "jne 1b" - :"=r" (src), "=r" (tmp), "=q" (dummy) - :"0" (src), "1" (tmp) - :"memory"); -return dest; -} - -#define __HAVE_ARCH_STRNCPY -static 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),%2\n\t" - "incl %0\n\t" - "movb %2,(%1)\n\t" - "incl %1\n\t" - "decl %3\n\t" - "je 3f\n\t" - "testb %2,%2\n\t" - "jne 1b\n\t" - "2:\tmovb %2,(%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 -static 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 -static 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 %0,%0\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 -static 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 %0,%0\n\t" - "jmp 3f\n" - "2:\tmovl $1,%0\n\t" - "jb 3f\n\t" - "negl %0\n" - "3:" - :"=q" (__res), "=r" (cs), "=r" (ct) - :"1" (cs), "2" (ct) - : "memory" ); -return __res; -} - -#define __HAVE_ARCH_STRNCMP -static 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 %0,%0\n\t" - "jmp 4f\n" - "3:\tmovl $1,%0\n\t" - "jb 4f\n\t" - "negl %0\n" - "4:" - :"=q" (__res), "=r" (cs), "=r" (ct), "=r" (count) - :"1" (cs), "2" (ct), "3" (count)); -return __res; -} - -#define __HAVE_ARCH_STRCHR -static 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 -static inline char * strrchr(const char * s, int c) -{ -int d0, d1; -register char * __res; -__asm__ __volatile__( - "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), "=&S" (d0), "=&a" (d1) - :"0" (0), "1" (s), "2" (c)); -return __res; -} - - -#define __HAVE_ARCH_STRCSPN -static inline size_t strcspn(const char * cs, const char * ct) -{ -int d0, d1; -register char * __res; -__asm__ __volatile__( - "movl %6,%%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 %6,%%edi\n\t" - "movl %%edx,%%ecx\n\t" - "repne\n\t" - "scasb\n\t" - "jne 1b\n" - "2:\tdecl %0" - :"=S" (__res), "=&a" (d0), "=&c" (d1) - :"0" (cs), "1" (0), "2" (0xffffffff), "g" (ct) - :"dx", "di"); -return __res-cs; -} - - -#define __HAVE_ARCH_STRLEN -static 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 -static inline size_t strnlen(const char * s, size_t count) -{ -int d0; -register int __res; -__asm__ __volatile__( - "movl %3,%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 %3,%0" - :"=a" (__res), "=&d" (d0) - :"1" (count), "c" (s)); -return __res; -} -/* end of additional stuff */ - - -/* - * These ought to get tweaked to do some cache priming. - */ - -static 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); -} - -static 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); -} - -static inline void * __memcpy_g(void * to, const void * from, size_t n) -{ -int d0, d1, d2; -register void *tmp = (void *)to; -__asm__ __volatile__ ( - "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" - :"=&c" (d0), "=&D" (d1), "=&S" (d2) - :"0" (n), "1" ((long) tmp), "2" ((long) from) - :"memory"); -return (to); -} - -#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 __memcpy(d,s,count) \ -(__builtin_constant_p(count) ? \ - __memcpy_c((d),(s),(count)) : \ - __memcpy_g((d),(s),(count))) - -#define __HAVE_ARCH_MEMCPY - -#include <linux/config.h> - -#ifdef CONFIG_X86_USE_3DNOW - -#include <asm/mmx.h> - -/* -** This CPU favours 3DNow strongly (eg AMD K6-II, K6-III, Athlon) -*/ - -static inline void * __constant_memcpy3d(void * to, const void * from, size_t len) -{ - if (len < 512) - return __memcpy_c(to, from, len); - return _mmx_memcpy(to, from, len); -} - -static inline void *__memcpy3d(void *to, const void *from, size_t len) -{ - if(len < 512) - return __memcpy_g(to, from, len); - return _mmx_memcpy(to, from, len); -} - -#define memcpy(d, s, count) \ -(__builtin_constant_p(count) ? \ - __constant_memcpy3d((d),(s),(count)) : \ - __memcpy3d((d),(s),(count))) - -#else /* CONFIG_X86_USE_3DNOW */ - -/* -** Generic routines -*/ - - -#define memcpy(d, s, count) __memcpy(d, s, count) - -#endif /* CONFIG_X86_USE_3DNOW */ - - -extern void __struct_cpy_bug( void ); - -#define struct_cpy(x,y) \ -({ \ - if (sizeof(*(x)) != sizeof(*(y))) \ - __struct_cpy_bug; \ - memcpy(x, y, sizeof(*(x))); \ -}) - - -#define __HAVE_ARCH_MEMMOVE -static inline void * memmove(void * dest,const void * src, size_t n) -{ -int d0, d1, d2; -register void *tmp = (void *)dest; -if (dest<src) -__asm__ __volatile__ ( - "rep\n\t" - "movsb" - :"=&c" (d0), "=&S" (d1), "=&D" (d2) - :"0" (n), "1" (src), "2" (tmp) - :"memory"); -else -__asm__ __volatile__ ( - "std\n\t" - "rep\n\t" - "movsb\n\t" - "cld" - :"=&c" (d0), "=&S" (d1), "=&D" (d2) - :"0" (n), "1" (n-1+(const char *)src), "2" (n-1+(char *)tmp) - :"memory"); -return dest; -} - - -#define __HAVE_ARCH_MEMCMP -static inline int memcmp(const void * cs,const void * ct,size_t count) -{ -int d0, d1, d2; -register int __res; -__asm__ __volatile__( - "repe\n\t" - "cmpsb\n\t" - "je 1f\n\t" - "sbbl %0,%0\n\t" - "orb $1,%b0\n" - "1:" - :"=a" (__res), "=&S" (d0), "=&D" (d1), "=&c" (d2) - :"0" (0), "1" (cs), "2" (ct), "3" (count)); -return __res; -} - - -#define __HAVE_ARCH_MEMCHR -static inline void * memchr(const void * cs,int c,size_t count) -{ -int d0; -register void * __res; -if (!count) - return NULL; -__asm__ __volatile__( - "repne\n\t" - "scasb\n\t" - "je 1f\n\t" - "movl $1,%0\n" - "1:\tdecl %0" - :"=D" (__res), "=&c" (d0) - :"a" (c), "0" (cs), "1" (count)); -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) \ -(__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)))) - -static 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) - :"q" (0x01010101UL * (unsigned char) c), "0" (tmp), "1" (count/4) - :"memory"); -return s; -} - -static 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) - :"q" (0x01010101UL * (unsigned char) c), "0" (tmp), "1" (count/2) - :"memory"); -return s; -} - -static 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,%0\n\t" - "popw %w0\n" - "1:\tmovl %0,(%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; -} - -static 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,%0\n\t" - "popw %w0\n" - "1:\tmovl %0,(%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; -} - -static inline void * __memset_cg(void * s, char c, size_t count) -{ -int d0, d1; -register void *tmp = (void *)s; -__asm__ __volatile__ ( - "shrl $1,%%ecx\n\t" - "rep\n\t" - "stosw\n\t" - "jnc 1f\n\t" - "movb %%al,(%%edi)\n" - "1:" - :"=&c" (d0), "=&D" (d1) - :"a" (0x0101U * (unsigned char) c), "0" (count), "1" (tmp) - :"memory"); -return s; -} - -static inline void * __memset_gg(void * s,char c,size_t count) -{ -int d0, d1, d2; -register void *tmp = (void *)s; -__asm__ __volatile__ ( - "movb %%al,%%ah\n\t" - "shrl $1,%%ecx\n\t" - "rep\n\t" - "stosw\n\t" - "jnc 1f\n\t" - "movb %%al,(%%edi)\n" - "1:" - :"=&c" (d0), "=&D" (d1), "=&D" (d2) - :"0" (count), "1" (tmp), "2" (c) - :"memory"); -return s; -} - - -/* - * find the first occurrence of byte 'c', or 1 past the area if none - */ -#define __HAVE_ARCH_MEMSCAN -static inline void * memscan(void * addr, int c, size_t size) -{ - if (!size) - return addr; - __asm__("repnz; scasb - jnz 1f - dec %%edi -1: " - : "=D" (addr), "=c" (size) - : "0" (addr), "1" (size), "a" (c)); - return addr; -} - -#endif |