WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/src/lib/func.c


/*
 * Copyright (C) 2001-2004 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 <func.h>
#include <print.h>
#include <cpu.h>
#include <arch/asm.h>
#include <arch.h>
 
__u32   haltstate = 0; /**< Halt flag */
 
 
/** Halt wrapper
 *
 * Set halt flag and halt the cpu.
 *
 */
void halt(void)
{
    haltstate = 1;
    interrupts_disable();
    if (CPU)
        printf("cpu%d: halted\n", CPU->id);
    else
        printf("cpu: halted\n");
    cpu_halt();
}
 
 
/** Compare two NULL terminated strings
 *
 * Do a char-by-char comparment of two NULL terminated strings.
 * The strings are considered equal iff they have the same
 * length and consist of the same characters.
 *
 * @param src First string to compare.
 * @param dst Second string to compare.
 *
 * @return 0 if the strings are equal, 1 otherwise.
 *
 */
int strcmp(const char *src, const char *dst)
{
    int i;
   
    i = 0;
    while (src[i] == dst[i]) {
        if (src[i] == '\0')
            return 0;
        i++;
    }
    return 1;
}
 
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/lib/func.c @ 806 – Rev 331 → 413

Rev 331		Rev 413
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 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 <func.h>	29	#include <func.h>
30	#include <print.h>	30	#include <print.h>
31	#include <cpu.h>	31	#include <cpu.h>
32	#include <arch/asm.h>	32	#include <arch/asm.h>
33	#include <arch.h>	33	#include <arch.h>
34		34
35	__u32 haltstate = 0; /*< Halt flag /	35	__u32 haltstate = 0; /*< Halt flag /
36		36
37		37
38	/** Halt wrapper	38	/** Halt wrapper
39	*	39	*
40	* Set halt flag and halt the cpu.	40	* Set halt flag and halt the cpu.
41	*	41	*
42	*/	42	*/
43	void halt(void)	43	void halt(void)
44	{	44	{
45	haltstate = 1;	45	haltstate = 1;
46	cpu_priority_high();	46	interrupts_disable();
47	if (CPU)	47	if (CPU)
48	printf("cpu%d: halted\n", CPU->id);	48	printf("cpu%d: halted\n", CPU->id);
49	else	49	else
50	printf("cpu: halted\n");	50	printf("cpu: halted\n");
51	cpu_halt();	51	cpu_halt();
52	}	52	}
53		53
54		54
55	/** Compare two NULL terminated strings	55	/** Compare two NULL terminated strings
56	*	56	*
57	* Do a char-by-char comparment of two NULL terminated strings.	57	* Do a char-by-char comparment of two NULL terminated strings.
58	* The strings are considered equal iff they have the same	58	* The strings are considered equal iff they have the same
59	* length and consist of the same characters.	59	* length and consist of the same characters.
60	*	60	*
61	* @param src First string to compare.	61	* @param src First string to compare.
62	* @param dst Second string to compare.	62	* @param dst Second string to compare.
63	*	63	*
64	* @return 0 if the strings are equal, 1 otherwise.	64	* @return 0 if the strings are equal, 1 otherwise.
65	*	65	*
66	*/	66	*/
67	int strcmp(const char src, const char dst)	67	int strcmp(const char src, const char dst)
68	{	68	{
69	int i;	69	int i;
70		70
71	i = 0;	71	i = 0;
72	while (src[i] == dst[i]) {	72	while (src[i] == dst[i]) {
73	if (src[i] == '\0')	73	if (src[i] == '\0')
74	return 0;	74	return 0;
75	i++;	75	i++;
76	}	76	}
77	return 1;	77	return 1;
78	}	78	}
79		79
80		80