58 lines
1.9 KiB
PHP
58 lines
1.9 KiB
PHP
; Copyright (c) 2024 Elaina Claus
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;
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; Permission is hereby granted, free of charge, to any person obtaining a copy
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; of this software and associated documentation files (the "Software"), to deal
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; in the Software without restriction, including without limitation the rights
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; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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; copies of the Software, and to permit persons to whom the Software is
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; furnished to do so, subject to the following conditions:
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;
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; The above copyright notice and this permission notice shall be included in all
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; copies or substantial portions of the Software.
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;
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; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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; SOFTWARE.
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%ifndef __INC_KMEM_FUNC
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%include 'cdecl16.inc'
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; uint8_t* kmemset_byte(void* dst, uint8_t val, uint16_t len);
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ALIGN 4, db 0x90
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kmemset:
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__CDECL16_ENTRY
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.func:
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mov cx, [bp + 8] ; size_t len
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mov al, [bp + 6] ; uint8_t val
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mov di, [bp + 4] ; void * dst
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cld
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rep stosb
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mov ax, di ; return pointer to dest
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.endp:
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__CDECL16_EXIT
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ret
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; uint8_t* kmemset(uint8_t* dest, uint8_t* src, uint8_t len);
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; not overlap safe
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ALIGN 4, db 0x90
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kmemcpy:
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__CDECL16_ENTRY
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.func:
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mov cx, [bp + 8] ; len
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mov si, [bp + 6] ; src
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mov di, [bp + 4] ; dest
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cld ; ensure we are incrementing
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rep movsb
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mov ax, di ; return pointer to dest
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.endf:
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__CDECL16_EXIT
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ret
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%endif
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%define __INC_KMEM_FUNC |