Subversion Repositories HelenOS

Rev

Rev 3386 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3386 Rev 4153
Line 45... Line 45...
45
atomic_t haltstate = {0}; /**< Halt flag */
45
atomic_t haltstate = {0}; /**< Halt flag */
46
 
46
 
47
 
47
 
48
/** Halt wrapper
48
/** Halt wrapper
49
 *
49
 *
50
 * Set halt flag and halt the cpu.
50
 * Set halt flag and halt the CPU.
51
 *
51
 *
52
 */
52
 */
53
void halt()
53
void halt()
54
{
54
{
55
#ifdef CONFIG_DEBUG
55
#ifdef CONFIG_DEBUG
56
    bool rundebugger = false;
56
    bool rundebugger = false;
57
 
57
   
58
//      TODO test_and_set not defined on all arches
-
 
59
//  if (!test_and_set(&haltstate))
-
 
60
    if (!atomic_get(&haltstate)) {
58
    if (!atomic_get(&haltstate)) {
61
        atomic_set(&haltstate, 1);
59
        atomic_set(&haltstate, 1);
62
        rundebugger = true;
60
        rundebugger = true;
63
    }
61
    }
64
#else
62
#else
65
    atomic_set(&haltstate, 1);
63
    atomic_set(&haltstate, 1);
66
#endif
64
#endif
67
 
65
   
68
    interrupts_disable();
66
    interrupts_disable();
-
 
67
   
69
#ifdef CONFIG_DEBUG
68
#if (defined(CONFIG_DEBUG)) && (defined(CONFIG_KCONSOLE))
70
    if (rundebugger) {
69
    if ((rundebugger) && (kconsole_check_poll()))
71
        printf("\n");
-
 
72
        kconsole("panic"); /* Run kconsole as a last resort to user */
70
        kconsole("panic", "\nLast resort kernel console ready.\n", false);
-
 
71
#endif
73
    }
72
   
74
#endif      
-
 
75
    if (CPU)
73
    if (CPU)
76
        printf("cpu%u: halted\n", CPU->id);
74
        printf("cpu%u: halted\n", CPU->id);
77
    else
75
    else
78
        printf("cpu: halted\n");
76
        printf("cpu: halted\n");
79
    cpu_halt();
-
 
80
}
-
 
81
 
-
 
82
/** Return number of characters in a string.
-
 
83
 *
-
 
84
 * @param str NULL terminated string.
-
 
85
 *
-
 
86
 * @return Number of characters in str.
-
 
87
 */
-
 
88
size_t strlen(const char *str)
-
 
89
{
-
 
90
    int i;
-
 
91
   
-
 
92
    for (i = 0; str[i]; i++)
-
 
93
        ;
-
 
94
   
77
   
95
    return i;
-
 
96
}
-
 
97
 
-
 
98
/** Compare two NULL terminated strings
-
 
99
 *
-
 
100
 * Do a char-by-char comparison of two NULL terminated strings.
-
 
101
 * The strings are considered equal iff they consist of the same
-
 
102
 * characters on the minimum of their lengths.
-
 
103
 *
-
 
104
 * @param src First string to compare.
-
 
105
 * @param dst Second string to compare.
-
 
106
 *
-
 
107
 * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller.
-
 
108
 *
-
 
109
 */
-
 
110
int strcmp(const char *src, const char *dst)
-
 
111
{
-
 
112
    for (; *src && *dst; src++, dst++) {
-
 
113
        if (*src < *dst)
-
 
114
            return -1;
-
 
115
        if (*src > *dst)
-
 
116
            return 1;
-
 
117
    }
-
 
118
    if (*src == *dst)
-
 
119
        return 0;
-
 
120
    if (!*src)
-
 
121
        return -1;
-
 
122
    return 1;
-
 
123
}
-
 
124
 
-
 
125
 
-
 
126
/** Compare two NULL terminated strings
-
 
127
 *
-
 
128
 * Do a char-by-char comparison of two NULL terminated strings.
-
 
129
 * The strings are considered equal iff they consist of the same
-
 
130
 * characters on the minimum of their lengths and specified maximal
-
 
131
 * length.
-
 
132
 *
-
 
133
 * @param src First string to compare.
-
 
134
 * @param dst Second string to compare.
-
 
135
 * @param len Maximal length for comparison.
-
 
136
 *
-
 
137
 * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller.
-
 
138
 *
-
 
139
 */
-
 
140
int strncmp(const char *src, const char *dst, size_t len)
-
 
141
{
-
 
142
    unsigned int i;
-
 
143
   
-
 
144
    for (i = 0; (*src) && (*dst) && (i < len); src++, dst++, i++) {
-
 
145
        if (*src < *dst)
-
 
146
            return -1;
-
 
147
        if (*src > *dst)
-
 
148
            return 1;
-
 
149
    }
-
 
150
    if (i == len || *src == *dst)
-
 
151
        return 0;
-
 
152
    if (!*src)
-
 
153
        return -1;
78
    cpu_halt();
154
    return 1;
-
 
155
}
-
 
156
 
-
 
157
 
-
 
158
 
-
 
159
/** Copy NULL terminated string.
-
 
160
 *
-
 
161
 * Copy at most 'len' characters from string 'src' to 'dest'.
-
 
162
 * If 'src' is shorter than 'len', '\0' is inserted behind the
-
 
163
 * last copied character.
-
 
164
 *
-
 
165
 * @param src Source string.
-
 
166
 * @param dest Destination buffer.
-
 
167
 * @param len Size of destination buffer.
-
 
168
 */
-
 
169
void strncpy(char *dest, const char *src, size_t len)
-
 
170
{
-
 
171
    unsigned int i;
-
 
172
    for (i = 0; i < len; i++) {
-
 
173
        if (!(dest[i] = src[i]))
-
 
174
            return;
-
 
175
    }
-
 
176
    dest[i-1] = '\0';
-
 
177
}
79
}
178
 
80
 
179
/** Convert ascii representation to unative_t
81
/** Convert ascii representation to unative_t
180
 *
82
 *
181
 * Supports 0x for hexa & 0 for octal notation.
83
 * Supports 0x for hexa & 0 for octal notation.