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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [machine/] [i960/] [strcspn.S] - Blame information for rev 207

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1 207 jeremybenn
/*******************************************************************************
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 *
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 * Copyright (c) 1993 Intel Corporation
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 *
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 * Intel hereby grants you permission to copy, modify, and distribute this
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 * software and its documentation.  Intel grants this permission provided
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 * that the above copyright notice appears in all copies and that both the
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 * copyright notice and this permission notice appear in supporting
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 * documentation.  In addition, Intel grants this permission provided that
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 * you prominently mark as "not part of the original" any modifications
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 * made to this software or documentation, and that the name of Intel
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 * Corporation not be used in advertising or publicity pertaining to
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 * distribution of the software or the documentation without specific,
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 * written prior permission.
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 *
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 * Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR
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 * IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY
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 * OR FITNESS FOR A PARTICULAR PURPOSE.  Intel makes no guarantee or
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 * representations regarding the use of, or the results of the use of,
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 * the software and documentation in terms of correctness, accuracy,
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 * reliability, currentness, or otherwise; and you rely on the software,
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 * documentation and results solely at your own risk.
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 *
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 * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS,
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 * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES
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 * OF ANY KIND.  IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM
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 * PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER.
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 *
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 ******************************************************************************/
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        .file "strcspn.s"
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#ifdef  __PIC
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        .pic
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#endif
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#ifdef  __PID
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        .pid
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#endif
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/*
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 * (c) copyright 1989,1993 Intel Corp., all rights reserved
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 */
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/*
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        procedure strcspn  (optimized assembler version: 80960K series, 80960CA)
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        len = strcspn (string, charset)
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        Return the number of characters in the maximum leading segment
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        of string which consists solely of characters NOT from charset.
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        At the time of this writing, only g0 thru g7 and g13 are available
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        for use in this leafproc;  other registers would have to be saved and
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        restored.  These nine registers, plus tricky use of g14 are sufficient
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        to implement the routine.
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*/
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        .globl  _strcspn
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        .globl  __strcspn
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        .leafproc       _strcspn, __strcspn
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        .align  2
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_strcspn:
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#ifndef __PIC
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        lda     Lrett,g14
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#else
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        lda     Lrett-(.+8)(ip),g14
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#endif
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__strcspn:
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        mov     g14,g13         # save return address
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         lda    (g0),g3         # copy string pointer
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        mov     0,g14           # conform to register conventions
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Lnext_char:
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        ldob    (g3),g7         # fetch next character of string
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        addo    1,g1,g2         # g2 will be the charset ptr
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        ldob    (g1),g6         # fetch first character of charset
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        cmpobe.f 0,g7,Lexit     # quit if at end of string
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Lscan_set:
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        cmpo    g6,g7           # is charset char same as string char?
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        ldob    (g2),g5         # fetch next charset char
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        addo    1,g2,g2         # bump charset ptr
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        be.f    Lexit
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        cmpo    g6,0            # is charset exhausted?
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        lda     (g5),g6
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        bne.t   Lscan_set       # check next character of charset
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        addo    1,g3,g3         # check next character of string
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        b       Lnext_char
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Lexit:
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        subo    g0,g3,g0        # compute string length
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        bx      (g13)
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Lrett:
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        ret
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/* end of strcspn */

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