diff options
Diffstat (limited to 'vbox.h')
| -rw-r--r-- | vbox.h | 73 |
1 files changed, 73 insertions, 0 deletions
@@ -0,0 +1,73 @@ +/* + * VBMouse - VirtualBox communication routines + * Copyright (C) 2022 Javier S. Pedro + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef VBOX_H +#define VBOX_H + +#include <stdbool.h> +#include <stdint.h> + +/** Logs a single character to the VBox debug message port. */ +static void vbox_logc(char c); +#pragma aux vbox_logc = \ + "mov dx, 0x504" \ + "out dx, al" \ + __parm [al] \ + __modify [dx] + +/** Logs a string to the VBox debug message port. */ +static void vbox_logs(const char __far *str); +#pragma aux vbox_logs = \ + "mov di, si" \ + "xor cx, cx" \ + "not cx" /* First we have to strlen(str), prepare -1 as max length */ \ + "xor al, al" /* The '\0' that we're searching for */ \ + "cld" \ + "repne scas byte ptr es:[di]" /* afterwards, cx = -(len+2) */ \ + "not cx" /* cx = (len+1) */ \ + "dec cx" /* cx = len */ \ + "mov dx, 0x504" /* And now we can write the string */ \ + "rep outs dx, byte ptr es:[si]" \ + __parm [es si] \ + __modify [ax cx dx si di] + +/** Logs a single character followed by '\n' to force log flush. + * A life-saver when there is no data segment available. */ +#define vbox_putc(c) do { \ + vbox_logc(c); vbox_logc('\n'); \ + } while (0); + +extern int vbox_init(void); + +extern int vbox_report_guest_info(uint32_t osType); + +extern int vbox_set_filter_mask(uint32_t add, uint32_t remove); + +extern int vbox_set_mouse(bool enable); + +extern int vbox_get_mouse(bool *abs, uint16_t *xpos, uint16_t *ypos); + +extern void vbox_init_callbacks(); +extern void vbox_deinit_callbacks(); + +// In CALLBACKS segment: + +extern int vbox_get_mouse_locked(bool *abs, uint16_t *xpos, uint16_t *ypos); + +#endif |