WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ia64/src/ski/ski.c


/*
 * Copyright (C) 2005 Jakub Jermar
 * 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/ski/ski.h>
 
/** Initialize debug console
 *
 * Issue SSC (Simulator System Call) to
 * to open debug console.
 */
void ski_init_console(void)
{
    __asm__ (
        "mov r15=%0\n"
        "break 0x80000\n"
        :
        : "i" (SKI_INIT_CONSOLE)
        : "r15", "r8"
    );
}
 
/** Display character on debug console
 *
 * Use SSC (Simulator System Call) to
 * display character on debug console.
 *
 * @param ch   Character to be printed.
 */
void ski_putchar(const char ch)
{
    __asm__ (
        "mov r15=%0\n"
        "mov r32=%1\n"      /* r32 is in0 */
        "break 0x80000\n"   /* modifies r8 */
        :
        : "i" (SKI_PUTCHAR), "r" (ch)
        : "r15", "in0", "r8"
    );
   
    if (ch == '\n') ski_putchar('\r');
}
 
/** Ask debug console if a key was pressed.
 *
 * Use SSC (Simulator System Call) to
 * get character from debug console.
 *
 * This call is non-blocking.
 *
 * @return ASCII code of pressed key or 0 if no key pressed.
 */
__s32 ski_getchar(void)
{
    __u64 ch;
   
    __asm__ (
        "mov r15=%0\n"
        "break 0x80000;;\n" /* modifies r8 */
        "mov %1=r8;;\n"    
 
        :
        : "i" (SKI_GETCHAR), "r" (ch)
        : "r15",  "r8"
    );
 
    return (__s32)ch;
}
 

Rev 532	Rev 534
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch/ski/ski.h>	29	#include <arch/ski/ski.h>
30		30
31	/** Initialize debug console	31	/** Initialize debug console
32	*	32	*
33	* Issue SSC (Simulator System Call) to	33	* Issue SSC (Simulator System Call) to
34	* to open debug console.	34	* to open debug console.
35	*/	35	*/
36	void ski_init_console(void)	36	void ski_init_console(void)
37	{	37	{
38	__asm__ (	38	__asm__ (
39	"mov r15=%0\n"	39	"mov r15=%0\n"
40	"break 0x80000\n"	40	"break 0x80000\n"
41	:	41	:
42	: "i" (SKI_INIT_CONSOLE)	42	: "i" (SKI_INIT_CONSOLE)
43	: "r15", "r8"	43	: "r15", "r8"
44	);	44	);
45	}	45	}
46		46
47	/** Display character on debug console	47	/** Display character on debug console
48	*	48	*
49	* Use SSC (Simulator System Call) to	49	* Use SSC (Simulator System Call) to
50	* display character on debug console.	50	* display character on debug console.
51	*	51	*
52	* @param ch Character to be printed.	52	* @param ch Character to be printed.
53	*/	53	*/
54	void ski_putchar(const char ch)	54	void ski_putchar(const char ch)
55	{	55	{
56	__asm__ (	56	__asm__ (
57	"mov r15=%0\n"	57	"mov r15=%0\n"
58	"mov r32=%1\n" /* r32 is in0 */	58	"mov r32=%1\n" /* r32 is in0 */
59	"break 0x80000\n" /* modifies r8 */	59	"break 0x80000\n" /* modifies r8 */
60	:	60	:
61	: "i" (SKI_PUTCHAR), "r" (ch)	61	: "i" (SKI_PUTCHAR), "r" (ch)
62	: "r15", "in0", "r8"	62	: "r15", "in0", "r8"
63	);	63	);
64		64
65	if (ch == '\n') ski_putchar('\r');	65	if (ch == '\n') ski_putchar('\r');
66	}	66	}
67		67
68	/** Ask debug console if a key was pressed.	68	/** Ask debug console if a key was pressed.
69	*	69	*
70	* Use SSC (Simulator System Call) to	70	* Use SSC (Simulator System Call) to
71	* get character from debug console.	71	* get character from debug console.
72	*	72	*
73	* This call is non-blocking.	73	* This call is non-blocking.
74	*	74	*
75	* @return ASCII code of pressed key or 0 if no key pressed.	75	* @return ASCII code of pressed key or 0 if no key pressed.
76	*/	76	*/
77	__s32 ski_getchar(void)	77	__s32 ski_getchar(void)
78	{	78	{
79	__u64 ch;	79	__u64 ch;
80		80
81	__asm__ (	81	__asm__ (
82	"mov r15=%0\n"	82	"mov r15=%0\n"
83	"break 0x80000;;\n" /* modifies r8 */	83	"break 0x80000;;\n" /* modifies r8 */
84	"mov %1=r8;;\n"	84	"mov %1=r8;;\n"
85		85
86	:	86	:
87	: "i" (SKI_GETCHAR), "r" (ch)	87	: "i" (SKI_GETCHAR), "r" (ch)
88	: "r15", "r8"	88	: "r15", "r8"
89	);	89	);
90		90
91	return (__s32)ch;	91	return (__s32)ch;
92	}	92	}
93		93

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ia64/src/ski/ski.c – Rev 532 → 534