mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
101 lines
3.4 KiB
ArmAsm
101 lines
3.4 KiB
ArmAsm
/*******************************************************************************
|
|
*
|
|
* 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* (c) copyright 1989,1993 Intel Corp., all rights reserved
|
|
*/
|
|
|
|
/*
|
|
procedure strpbrk (optimized assembler version: 80960K series, 80960CA)
|
|
|
|
char_addr = strpbrk (string, brkset_string)
|
|
|
|
Return the address of the first character in string that is NOT
|
|
in the brkset_string. Return NULL if none exists.
|
|
|
|
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.
|
|
|
|
This routine stays out of g3 and g4 altogether. They may be used by
|
|
the strtok routine, which calls this routine in an incestuous way.
|
|
*/
|
|
#ifdef __PIC
|
|
.pic
|
|
#endif
|
|
#ifdef __PID
|
|
.pid
|
|
#endif
|
|
|
|
.file "strprk.s"
|
|
.globl _strpbrk
|
|
.globl __strpbrk
|
|
.leafproc _strpbrk, __strpbrk
|
|
.align 2
|
|
|
|
_strpbrk:
|
|
#ifdef __PIC
|
|
lda Lrett-(.+8)(ip),g14
|
|
b __strpbrk
|
|
#else
|
|
lda Lrett,g14
|
|
b __strpbrk
|
|
#endif
|
|
|
|
Lrett: ret
|
|
|
|
__strpbrk:
|
|
|
|
Lnext_char_strpbrk:
|
|
addo 1,g1,g2 # g2 will be the brkset ptr
|
|
ldob (g0),g7 # fetch next character of string
|
|
ldob (g1),g6 # fetch first character of brkset
|
|
cmpobe.f 0,g7,Lexit_char_not_found # quit if at end of string
|
|
Lscan_set_strpbrk:
|
|
cmpo g6,g7 # is brkset char equal to string char?
|
|
ldob (g2),g5 # fetch next brkset char
|
|
addo 1,g2,g2 # bump brkset ptr
|
|
be.f Lexit_char_found
|
|
cmpo g6,0 # is brkset_string exhausted?
|
|
lda (g5),g6
|
|
bne.t Lscan_set_strpbrk # check next character of brkset
|
|
addo 1,g0,g0 # check next character of string
|
|
b Lnext_char_strpbrk
|
|
|
|
Lexit_char_not_found:
|
|
mov 0,g0 # return null if brkset char not found in string
|
|
Lexit_char_found:
|
|
mov g14,g13 # save return address
|
|
lda 0,g14 # conform to register conventions
|
|
bx (g13)
|
|
|
|
/* end of strpbrk */
|