diff options
Diffstat (limited to 'newlib/libc/machine/i960/strcspn.S')
| -rw-r--r-- | newlib/libc/machine/i960/strcspn.S | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/newlib/libc/machine/i960/strcspn.S b/newlib/libc/machine/i960/strcspn.S new file mode 100644 index 0000000..cd7b2e6 --- /dev/null +++ b/newlib/libc/machine/i960/strcspn.S @@ -0,0 +1,94 @@ +/******************************************************************************* + * + * Copyright (c) 1993 Intel Corporation + * + * Intel hereby grants you permission to copy, modify, and distribute this + * software and its documentation. Intel grants this permission provided + * that the above copyright notice appears in all copies and that both the + * copyright notice and this permission notice appear in supporting + * documentation. In addition, Intel grants this permission provided that + * you prominently mark as "not part of the original" any modifications + * made to this software or documentation, and that the name of Intel + * Corporation not be used in advertising or publicity pertaining to + * distribution of the software or the documentation without specific, + * written prior permission. + * + * Intel Corporation provides this AS IS, WITHOUT ANY WARRANTY, EXPRESS OR + * IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY + * OR FITNESS FOR A PARTICULAR PURPOSE. Intel makes no guarantee or + * representations regarding the use of, or the results of the use of, + * the software and documentation in terms of correctness, accuracy, + * reliability, currentness, or otherwise; and you rely on the software, + * documentation and results solely at your own risk. + * + * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY LOSS OF USE, LOSS OF BUSINESS, + * LOSS OF PROFITS, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES + * OF ANY KIND. IN NO EVENT SHALL INTEL'S TOTAL LIABILITY EXCEED THE SUM + * PAID TO INTEL FOR THE PRODUCT LICENSED HEREUNDER. + * + ******************************************************************************/ + + .file "strcspn.s" +#ifdef __PIC + .pic +#endif +#ifdef __PID + .pid +#endif +/* + * (c) copyright 1989,1993 Intel Corp., all rights reserved + */ + +/* + procedure strcspn (optimized assembler version: 80960K series, 80960CA) + + len = strcspn (string, charset) + + Return the number of characters in the maximum leading segment + of string which consists solely of characters NOT from charset. + + At the time of this writing, only g0 thru g7 and g13 are available + for use in this leafproc; other registers would have to be saved and + restored. These nine registers, plus tricky use of g14 are sufficient + to implement the routine. +*/ + + .globl _strcspn + .globl __strcspn + .leafproc _strcspn, __strcspn + .align 2 + +_strcspn: +#ifndef __PIC + lda Lrett,g14 +#else + lda Lrett-(.+8)(ip),g14 +#endif +__strcspn: + mov g14,g13 # save return address + lda (g0),g3 # copy string pointer + mov 0,g14 # conform to register conventions + +Lnext_char: + ldob (g3),g7 # fetch next character of string + addo 1,g1,g2 # g2 will be the charset ptr + ldob (g1),g6 # fetch first character of charset + cmpobe.f 0,g7,Lexit # quit if at end of string +Lscan_set: + cmpo g6,g7 # is charset char same as string char? + ldob (g2),g5 # fetch next charset char + addo 1,g2,g2 # bump charset ptr + be.f Lexit + cmpo g6,0 # is charset exhausted? + lda (g5),g6 + bne.t Lscan_set # check next character of charset + addo 1,g3,g3 # check next character of string + b Lnext_char + +Lexit: + subo g0,g3,g0 # compute string length + bx (g13) +Lrett: + ret + +/* end of strcspn */ |