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Diffstat (limited to 'newlib/libc/machine/microblaze/strcpy.c')
| -rw-r--r-- | newlib/libc/machine/microblaze/strcpy.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/newlib/libc/machine/microblaze/strcpy.c b/newlib/libc/machine/microblaze/strcpy.c deleted file mode 100644 index 6f0ad05e7..000000000 --- a/newlib/libc/machine/microblaze/strcpy.c +++ /dev/null @@ -1,183 +0,0 @@ -/* Copyright (c) 2009 Xilinx, Inc. All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - 1. Redistributions source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - 3. Neither the name of Xilinx nor the names of its contributors may be - used to endorse or promote products derived from this software without - specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS - IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED - TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - -FUNCTION - <<strcpy>>---copy string - -INDEX - strcpy - -ANSI_SYNOPSIS - #include <string.h> - char *strcpy(char *<[dst]>, const char *<[src]>); - -TRAD_SYNOPSIS - #include <string.h> - char *strcpy(<[dst]>, <[src]>) - char *<[dst]>; - char *<[src]>; - -DESCRIPTION - <<strcpy>> copies the string pointed to by <[src]> - (including the terminating null character) to the array - pointed to by <[dst]>. - -RETURNS - This function returns the initial value of <[dst]>. - -PORTABILITY -<<strcpy>> is ANSI C. - -<<strcpy>> requires no supporting OS subroutines. - -QUICKREF - strcpy ansi pure -*/ - -#include <string.h> -#include <limits.h> - -/*SUPPRESS 560*/ -/*SUPPRESS 530*/ - -/* Nonzero if either X or Y is not aligned on a "long" boundary. */ -#define UNALIGNED(X, Y) \ - (((long)X & (sizeof (long) - 1)) | ((long)Y & (sizeof (long) - 1))) - -#if LONG_MAX == 2147483647L -#define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080) -#else -#if LONG_MAX == 9223372036854775807L -/* Nonzero if X (a long int) contains a NULL byte. */ -#define DETECTNULL(X) (((X) - 0x0101010101010101) & ~(X) & 0x8080808080808080) -#else -#error long int is not a 32bit or 64bit type. -#endif -#endif - -#ifndef DETECTNULL -#error long int is not a 32bit or 64bit byte -#endif - -char* -_DEFUN (strcpy, (dst0, src0), - char *dst0 _AND - _CONST char *src0) -{ - -#ifndef HAVE_HW_PCMP - -#if defined(PREFER_SIZE_OVER_SPEED) || defined(__OPTIMIZE_SIZE__) - char *s = dst0; - - while (*dst0++ = *src0++) - ; - - return s; -#else - char *dst = dst0; - _CONST char *src = src0; - long *aligned_dst; - _CONST long *aligned_src; - - /* If SRC or DEST is unaligned, then copy bytes. */ - if (!UNALIGNED (src, dst)) - { - aligned_dst = (long*)dst; - aligned_src = (long*)src; - - /* SRC and DEST are both "long int" aligned, try to do "long int" - sized copies. */ - while (!DETECTNULL(*aligned_src)) - { - *aligned_dst++ = *aligned_src++; - } - - dst = (char*)aligned_dst; - src = (char*)aligned_src; - } - - while (*dst++ = *src++) - ; - return dst0; -#endif /* not PREFER_SIZE_OVER_SPEED */ - -#else - - asm volatile (" \ - or r9, r0, r0 /* Index register */ \n\ -check_alignment: \n\ - andi r3, r5, 3 \n\ - andi r4, r6, 3 \n\ - bnei r3, try_align_args \n\ - bnei r4, regular_strcpy /* At this point we dont have a choice */ \n\ -cpy_loop: \n\ - lw r3, r6, r9 \n\ - pcmpbf r4, r0, r3 \n\ - bnei r4, cpy_bytes /* If r4 != 0, then null present within string */\n\ - sw r3, r5, r9 \n\ - brid cpy_loop \n\ - addik r9, r9, 4 \n\ -cpy_bytes: \n\ - lbu r3, r6, r9 \n\ - sb r3, r5, r9 \n\ - addik r4, r4, -1 \n\ - bneid r4, cpy_bytes \n\ - addik r9, r9, 1 /* delay slot */\n\ -cpy_null: \n\ - rtsd r15, 8 \n\ - or r3, r0, r5 /* Return strcpy result */\n\ -try_align_args: \n\ - xor r7, r4, r3 \n\ - bnei r7, regular_strcpy /* cannot align args */\n\ - rsubik r10, r3, 4 /* Number of initial bytes to align */\n\ -align_loop: \n\ - lbu r3, r6, r9 \n\ - sb r3, r5, r9 \n\ - beqid r3, end_cpy /* Break if we have seen null character */\n\ - addik r10, r10, -1 \n\ - bneid r10, align_loop \n\ - addik r9, r9, 1 \n\ - bri cpy_loop \n\ -regular_strcpy: \n\ - lbu r3, r6, r9 \n\ - sb r3, r5, r9 \n\ - bneid r3, regular_strcpy \n\ - addik r9, r9, 1 \n\ -end_cpy: \n\ - rtsd r15, 8 \n\ - or r3, r0, r5 /* Return strcpy result */"); -#endif /* ! HAVE_HW_PCMP */ -} - - - - - |