0,0 → 1,92 |
/* |
* Copyright (C) 2005 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
#include <arch/vga.h> |
#include <putchar.h> |
#include <mm/page.h> |
#include <synch/spinlock.h> |
#include <arch/types.h> |
#include <arch/asm.h> |
|
static spinlock_t vgalock; |
static __u32 vga_cursor; |
|
void vga_move_cursor(void); |
|
void vga_init(void) |
{ |
} |
|
void vga_display_char(char ch) |
{ |
// __u8 *vram = (__u8 *) PA2KA(VIDEORAM); |
|
// vram[vga_cursor*2] = ch; |
} |
|
/* |
* This function takes care of scrolling. |
*/ |
void vga_check_cursor(void) |
{ |
} |
|
void vga_putchar(const char ch) |
{ |
pri_t pri; |
|
pri = cpu_priority_high(); |
spinlock_lock(&vgalock); |
|
switch (ch) { |
case '\n': |
vga_cursor = (vga_cursor + ROW) - vga_cursor % ROW; |
break; |
case '\t': |
vga_cursor = (vga_cursor + 8) - vga_cursor % 8; |
break; |
default: |
vga_display_char(ch); |
vga_cursor++; |
break; |
} |
vga_check_cursor(); |
vga_move_cursor(); |
|
spinlock_unlock(&vgalock); |
cpu_priority_restore(pri); |
} |
|
void vga_move_cursor(void) |
{ |
} |
|
void putchar(const char ch) |
{ |
vga_putchar(ch); |
} |