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lampret |
/*******************************************************************************
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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 "strdup.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 strdup (optimized assembler version: 80960K series, 80960CA)
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dest_addr = strdup (src_addr)
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Allocate memory and copy thereto the string pointed to by src_addr.
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Return the address of the copy, or null if unable to perform the
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operation.
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*/
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.text
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.align 2
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.globl _strdup
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_strdup:
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mov g0,r3 # Keep a copy of the original string addr
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callj _strlen # Determine how much to allocate
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addo 1,g0,g0 # Add one byte for the null byte at end
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callj _malloc # Allocate the storage
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cmpo 0,g0
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mov r3,g1 # Original string addr is now src for copy
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bne.t _strcpy # Jump if allocation was successful
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ret # Return the null ptr otherwise
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/* end of strdup */
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