Subversion Repositories HelenOS-historic

Rev

Rev 532 | Rev 577 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 532 Rev 534
Line -... Line 1...
- 
 
 1 
/*
- 
 
 2 
 * Copyright (C) 2005 Jakub Jermar
- 
 
 3 
 * All rights reserved.
- 
 
 4 
 *
- 
 
 5 
 * Redistribution and use in source and binary forms, with or without
- 
 
 6 
 * modification, are permitted provided that the following conditions
- 
 
 7 
 * are met:
- 
 
 8 
 *
- 
 
 9 
 * - Redistributions of source code must retain the above copyright
- 
 
 10 
 *   notice, this list of conditions and the following disclaimer.
- 
 
 11 
 * - Redistributions in binary form must reproduce the above copyright
- 
 
 12 
 *   notice, this list of conditions and the following disclaimer in the
- 
 
 13 
 *   documentation and/or other materials provided with the distribution.
- 
 
 14 
 * - The name of the author may not be used to endorse or promote products
- 
 
 15 
 *   derived from this software without specific prior written permission.
- 
 
 16 
 *
- 
 
 17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- 
 
 18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- 
 
 19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- 
 
 20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- 
 
 21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- 
 
 22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- 
 
 23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- 
 
 24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- 
 
 25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- 
 
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- 
 
 27 
 */
- 
 
 28 
 
- 
 
 29 
#include <arch/ski/ski.h>
- 
 
 30 
 
- 
 
 31 
/** Initialize debug console
- 
 
 32 
 *
- 
 
 33 
 * Issue SSC (Simulator System Call) to
- 
 
 34 
 * to open debug console.
- 
 
 35 
 */
- 
 
 36 
void ski_init_console(void)
- 
 
 37 
{
- 
 
 38 
    __asm__ (
- 
 
 39 
        "mov r15=%0\n"
- 
 
 40 
        "break 0x80000\n"
- 
 
 41 
        :
- 
 
 42 
        : "i" (SKI_INIT_CONSOLE)
- 
 
 43 
        : "r15", "r8"
- 
 
 44 
    );
- 
 
 45 
}
- 
 
 46 
 
- 
 
 47 
/** Display character on debug console
- 
 
 48 
 *
- 
 
 49 
 * Use SSC (Simulator System Call) to
- 
 
 50 
 * display character on debug console.
- 
 
 51 
 *
- 
 
 52 
 * @param ch   Character to be printed.
- 
 
 53 
 */
- 
 
 54 
void ski_putchar(const char ch)
- 
 
 55 
{
- 
 
 56 
    __asm__ (
- 
 
 57 
        "mov r15=%0\n"
- 
 
 58 
        "mov r32=%1\n"      /* r32 is in0 */
- 
 
 59 
        "break 0x80000\n"   /* modifies r8 */
- 
 
 60 
        :
- 
 
 61 
        : "i" (SKI_PUTCHAR), "r" (ch)
- 
 
 62 
        : "r15", "in0", "r8"
- 
 
 63 
    );
- 
 
 64 
   
- 
 
 65 
    if (ch == '\n') ski_putchar('\r');
- 
 
 66 
}
- 
 
 67 
 
- 
 
 68 
/** Ask debug console if a key was pressed.
- 
 
 69 
 *
- 
 
 70 
 * Use SSC (Simulator System Call) to
- 
 
 71 
 * get character from debug console.
- 
 
 72 
 *
- 
 
 73 
 * This call is non-blocking.
- 
 
 74 
 *
- 
 
 75 
 * @return ASCII code of pressed key or 0 if no key pressed.
- 
 
 76 
 */
- 
 
 77 
__s32 ski_getchar(void)
- 
 
 78 
{
- 
 
 79 
    __u64 ch;
- 
 
 80 
   
- 
 
 81 
    __asm__ (
- 
 
 82 
        "mov r15=%0\n"
- 
 
 83 
        "break 0x80000;;\n" /* modifies r8 */
- 
 
 84 
        "mov %1=r8;;\n"    
- 
 
 85 
 
- 
 
 86 
        :
- 
 
 87 
        : "i" (SKI_GETCHAR), "r" (ch)
- 
 
 88 
        : "r15",  "r8"
- 
 
 89 
    );
- 
 
 90 
 
- 
 
 91 
    return (__s32)ch;
- 
 
 92 
}