53 lines
1.8 KiB
NASM
53 lines
1.8 KiB
NASM
; Copyright (c) 2024 Elaina Claus
|
|
;
|
|
; Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
; of this software and associated documentation files (the "Software"), to deal
|
|
; in the Software without restriction, including without limitation the rights
|
|
; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
; copies of the Software, and to permit persons to whom the Software is
|
|
; furnished to do so, subject to the following conditions:
|
|
;
|
|
; The above copyright notice and this permission notice shall be included in all
|
|
; copies or substantial portions of the Software.
|
|
;
|
|
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
; SOFTWARE.
|
|
|
|
%ifndef __INC_KMEMCPY5_FUNC
|
|
%include 'cdecl16.inc'
|
|
|
|
; uint8_t* kmemset(word dest_segment, word dest, word src_segment, word src, byte len);
|
|
; not overlap safe, only for
|
|
ALIGN 4, db 0x90
|
|
kmemcpy5:
|
|
__CDECL16_ENTRY
|
|
push ds
|
|
push es
|
|
.setup_segments:
|
|
mov ax, [bp + 4]
|
|
mov ds, ax ; destination segment
|
|
|
|
mov ax, [ bp + 8]
|
|
mov es, ax ; source segment
|
|
.func:
|
|
mov cx, [bp + 12] ; len
|
|
mov si, [bp + 10] ; src
|
|
mov di, [bp + 6] ; dest
|
|
|
|
cld ; ensure we are incrementing
|
|
rep movsb ; move ds:si -> es:di
|
|
mov ax, di ; return pointer to dest
|
|
.restore_segments:
|
|
pop es
|
|
pop ds
|
|
.endf:
|
|
__CDECL16_EXIT
|
|
ret
|
|
|
|
%define __INC_KMEMCPY5_FUNC
|
|
%endif |