Subversion Repositories HelenOS

Rev

Rev 4337 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1 
/*
2071 jermar 2 
 * Copyright (c) 2001-2004 Jakub Jermar
1 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 
 
1757 jermar 29 
/** @addtogroup generic
1702 cejka 30 
 * @{
31 
 */
32 
 
1264 jermar 33 
/**
1702 cejka 34 
 * @file
1264 jermar 35 
 * @brief	Miscellaneous functions.
36 
 */
37 
 
1 jermar 38 
#include <func.h>
39 
#include <print.h>
40 
#include <cpu.h>
41 
#include <arch/asm.h>
42 
#include <arch.h>
607 palkovsky 43 
#include <console/kconsole.h>
1 jermar 44 
 
631 palkovsky 45 
atomic_t haltstate = {0}; /**< Halt flag */
1 jermar 46 
 
62 decky 47 
 
48 
/** Halt wrapper
49 
 *
50 
 * Set halt flag and halt the cpu.
51 
 *
52 
 */
631 palkovsky 53 
void halt()
1 jermar 54 
{
631 palkovsky 55 
#ifdef CONFIG_DEBUG
659 jermar 56 
	bool rundebugger = false;
631 palkovsky 57 
 
58 
	if (!atomic_get(&haltstate)) {
59 
		atomic_set(&haltstate, 1);
60 
		rundebugger = true;
61 
	}
62 
#else
1100 palkovsky 63 
	atomic_set(&haltstate, 1);
631 palkovsky 64 
#endif
65 
 
413 jermar 66 
	interrupts_disable();
4337 svoboda 67 
 
68 
#if (defined(CONFIG_DEBUG)) && (defined(CONFIG_KCONSOLE))
69 
	if (rundebugger)
70 
		kconsole("panic", "\nLast resort kernel console ready\n", false);
71 
#endif
72 
 
227 jermar 73 
	if (CPU)
3149 svoboda 74 
		printf("cpu%u: halted\n", CPU->id);
227 jermar 75 
	else
76 
		printf("cpu: halted\n");
1 jermar 77 
	cpu_halt();
78 
}
79 
 
1780 jermar 80 
/** Convert ascii representation to unative_t
582 palkovsky 81 
 *
82 
 * Supports 0x for hexa & 0 for octal notation.
83 
 * Does not check for overflows, does not support negative numbers
84 
 *
85 
 * @param text Textual representation of number
86 
 * @return Converted number or 0 if no valid number ofund
87 
 */
1780 jermar 88 
unative_t atoi(const char *text)
582 palkovsky 89 
{
90 
	int base = 10;
1780 jermar 91 
	unative_t result = 0;
582 palkovsky 92 
 
93 
	if (text[0] == '0' && text[1] == 'x') {
94 
		base = 16;
95 
		text += 2;
96 
	} else if (text[0] == '0')
97 
		base = 8;
98 
 
99 
	while (*text) {
603 palkovsky 100 
		if (base != 16 && \
101 
		    ((*text >= 'A' && *text <= 'F' )
102 
		     || (*text >='a' && *text <='f')))
582 palkovsky 103 
			break;
104 
		if (base == 8 && *text >='8')
105 
			break;
106 
 
591 palkovsky 107 
		if (*text >= '0' && *text <= '9') {
108 
			result *= base;
582 palkovsky 109 
			result += *text - '0';
591 palkovsky 110 
		} else if (*text >= 'A' && *text <= 'F') {
111 
			result *= base;
582 palkovsky 112 
			result += *text - 'A' + 10;
603 palkovsky 113 
		} else if (*text >= 'a' && *text <= 'f') {
114 
			result *= base;
115 
			result += *text - 'a' + 10;
591 palkovsky 116 
		} else
582 palkovsky 117 
			break;
118 
		text++;
119 
	}
120 
 
121 
	return result;
122 
}
1702 cejka 123 
 
2050 decky 124 
 
125 
void order(const uint64_t val, uint64_t *rv, char *suffix)
126 
{
2184 decky 127 
	if (val > 10000000000000000000ULL) {
128 
		*rv = val / 1000000000000000000ULL;
129 
		*suffix = 'Z';
130 
	} else if (val > 1000000000000000000ULL) {
131 
		*rv = val / 1000000000000000ULL;
2050 decky 132 
		*suffix = 'E';
2184 decky 133 
	} else if (val > 1000000000000000ULL) {
134 
		*rv = val / 1000000000000ULL;
2050 decky 135 
		*suffix = 'T';
2184 decky 136 
	} else if (val > 1000000000000ULL) {
137 
		*rv = val / 1000000000ULL;
2104 decky 138 
		*suffix = 'G';
2184 decky 139 
	} else if (val > 1000000000ULL) {
140 
		*rv = val / 1000000ULL;
2050 decky 141 
		*suffix = 'M';
2184 decky 142 
	} else if (val > 1000000ULL) {
143 
		*rv = val / 1000ULL;
2104 decky 144 
		*suffix = 'k';
2050 decky 145 
	} else {
146 
		*rv = val;
147 
		*suffix = ' ';
148 
	}
149 
}
150 
 
1757 jermar 151 
/** @}
1702 cejka 152 
 */