97003a8aca
GCC has -mrtd but the args are pushed in reverse versus PASCAL. So asm routines have to use macros to obtain the stack arguments. For the complex call_nls assembly, revert the arguments in C using a preprocessor macro.
66 lines
1.9 KiB
NASM
66 lines
1.9 KiB
NASM
;
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; File:
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; wratclk.asm
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; Description:
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; WriteATClock - sysclock support
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;
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; Copyright (c) 1995
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; Pasquale J. Villani
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; All Rights Reserved
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;
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; This file is part of DOS-C.
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;
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; DOS-C is free software; you can redistribute it and/or
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; modify it under the terms of the GNU General Public License
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; as published by the Free Software Foundation; either version
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; 2, or (at your option) any later version.
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;
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; DOS-C is distributed in the hope that it will be useful, but
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; WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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; the GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public
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; License along with DOS-C; see the file COPYING. If not,
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; write to the Free Software Foundation, 675 Mass Ave,
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; Cambridge, MA 02139, USA.
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;
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; $Header$
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;
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%include "../kernel/segs.inc"
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%include "../hdr/stacks.inc"
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segment HMA_TEXT
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;
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; VOID WriteATClock(bcdDays, bcdHours, bcdMinutes, bcdSeconds)
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; BYTE *bcdDays;
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; BYTE bcdHours;
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; BYTE bcdMinutes;
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; BYTE bcdSeconds;
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;
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global WRITEATCLOCK
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WRITEATCLOCK:
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push bp
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mov bp,sp
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; bcdSeconds = 4
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; bcdMinutes = 6
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; bcdHours = 8
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; bcdDays = 10
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arg bcdDays, bcdHours, bcdMinutes, bcdSeconds
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mov ch,byte [.bcdHours]
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mov cl,byte [.bcdMinutes]
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mov dh,byte [.bcdSeconds]
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mov dl,0
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mov ah,3
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int 1ah
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mov bx,word [.bcdDays]
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mov dx,word [bx]
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mov cx,word [bx+2]
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mov ah,5
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int 1ah
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pop bp
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ret 8
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