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78 jermar 1
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/ski/ski.h>
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79 jermar 31
/** Initialize debug console
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 *
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 * Issue SSC (Simulator System Call) to
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 * to open debug console.
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 */
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void ski_init_console(void)
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{
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    __asm__ (
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        "mov r15=%0\n"
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        "break 0x80000\n"
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        :
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        : "i" (SKI_INIT_CONSOLE)
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        : "r15", "r8"
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    );
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}
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/** Display character on debug console
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 *
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 * Use SSC (Simulator System Call) to
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 * display character on debug console.
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 *
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 * @param ch   Character to be printed.
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 */
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void ski_putchar(const char ch)
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{
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    __asm__ (
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        "mov r15=%0\n"
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        "mov r32=%1\n"      /* r32 is in0 */
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        "break 0x80000\n"   /* modifies r8 */
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        :
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        : "i" (SKI_PUTCHAR), "r" (ch)
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        : "r15", "in0", "r8"
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    );
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    if (ch == '\n') ski_putchar('\r');
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}