mirror of
https://github.com/pnx/m16vm
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44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* syscall.h
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*
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* Copyright (C) 2012,2014-2015 Henrik Hautakoski <henrik.hautakoski@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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 License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include "syscall.h"
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void vm_syscall(int16_t number, int8_t op, uint16_t* regs) {
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if (number == SYS_WRITE) {
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vm_syscall_write(op, regs[15]);
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}
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}
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void vm_syscall_write(int8_t op, int16_t value) {
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switch(op) {
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case SYSW_INT16 :
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printf("%i", value);
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break;
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case SYSW_INT8 :
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printf("%i", (int8_t) value);
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break;
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case SYSW_CHAR :
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default:
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printf("%c", (unsigned char) value);
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break;
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}
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}
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