forked from Imagelibrary/rtems
49 lines
1.5 KiB
ArmAsm
49 lines
1.5 KiB
ArmAsm
/*
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* videoAsm.S - This file contains code for displaying cursor on the console
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*
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* Copyright (C) 1998 valette@crf.canon.fr
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*
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* This code is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This code 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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.file "videoAsm.s"
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#include <crt.h>
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.text
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.align 4
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.globl wr_cursor /* Move cursor position */
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/*
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* void wr_cursor(newPosition, ioBaseAddr)
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*/
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wr_cursor: pushl %ecx
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movl 8(%esp), %ecx /* Get new cursor position */
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movb $CC_CURSHIGH, %al /* Cursor high location */
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movl 12(%esp), %edx /* Get IO base address */
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outb (%dx)
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incw %dx /* Program Data register */
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movb %ch, %al
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outb (%dx) /* Update high location cursor */
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decw %dx /* Program Index Register */
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movb $CC_CURSLOW, %al /* Cursor low location */
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outb (%dx)
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incw %dx /* Program Data Register */
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movb %cl, %al
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outb (%dx) /* Update low location cursor */
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popl %ecx
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ret
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