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[/] [forwardcom/] [libraries/] [strcpy.as] - Blame information for rev 146
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/********************************* strcpy.as ********************************
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* Author: Agner Fog
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* date created: 2018-03-25
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* Last modified: 2018-03-25
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* Version: 1.00
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* Project: ForwardCom library libc.li
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* Description: strcpy function. Copy zero-terminated string
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* C declaration: char *strcpy(char *dest, const char *src)
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*
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* Copyright 2018 GNU General Public License http://www.gnu.org/licenses
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*****************************************************************************/
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extern _strlen: function, reguse = 0xF, 0x7
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extern _memcpy: function, reguse = 0x1F, 1
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code section execute align = 4
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// r0 = destination
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// r1 = source
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_strcpy function public reguse = 0x1F, 0x7
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push (r0, r1) // save source and destination
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int64 r0 = r1
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call _strlen // length of source
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int64 r2 = r0 + 1 // length including terminating zero
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pop (r1, r0)
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jump _memcpy // tail call. return dest in r0 unchanged
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_strcpy end
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code end
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