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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include <func.h> |
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30 | #include <print.h> |
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31 | #include <cpu.h> |
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32 | #include <arch/asm.h> |
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33 | #include <arch.h> |
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517 | jermar | 34 | #include <typedefs.h> |
1 | jermar | 35 | |
62 | decky | 36 | __u32 haltstate = 0; /**< Halt flag */ |
1 | jermar | 37 | |
62 | decky | 38 | |
39 | /** Halt wrapper |
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40 | * |
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41 | * Set halt flag and halt the cpu. |
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42 | * |
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43 | */ |
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1 | jermar | 44 | void halt(void) |
45 | { |
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46 | haltstate = 1; |
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413 | jermar | 47 | interrupts_disable(); |
227 | jermar | 48 | if (CPU) |
49 | printf("cpu%d: halted\n", CPU->id); |
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50 | else |
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51 | printf("cpu: halted\n"); |
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1 | jermar | 52 | cpu_halt(); |
53 | } |
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54 | |||
517 | jermar | 55 | /** Return number of characters in a string. |
56 | * |
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57 | * @param str NULL terminated string. |
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58 | * |
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59 | * @return Number of characters in str. |
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60 | */ |
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61 | size_t strlen(const char *str) |
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62 | { |
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63 | int i; |
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64 | |||
65 | for (i = 0; str[i]; i++) |
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66 | ; |
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67 | |||
68 | return i; |
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69 | } |
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1 | jermar | 70 | |
62 | decky | 71 | /** Compare two NULL terminated strings |
72 | * |
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517 | jermar | 73 | * Do a char-by-char comparison of two NULL terminated strings. |
74 | * The strings are considered equal iff they consist of the same |
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75 | * characters on the minimum of their lengths and specified maximal |
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76 | * length. |
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62 | decky | 77 | * |
78 | * @param src First string to compare. |
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79 | * @param dst Second string to compare. |
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517 | jermar | 80 | * @param len Maximal length for comparison. |
62 | decky | 81 | * |
82 | * @return 0 if the strings are equal, 1 otherwise. |
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83 | * |
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1 | jermar | 84 | */ |
517 | jermar | 85 | int strcmp(const char *src, const char *dst, size_t len) |
1 | jermar | 86 | { |
87 | int i; |
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88 | |||
89 | i = 0; |
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517 | jermar | 90 | while ((i < len) && (src[i] == dst[i])) { |
91 | if ((i == len - 1) || (src[i] == '\0')) |
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1 | jermar | 92 | return 0; |
93 | i++; |
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94 | } |
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95 | return 1; |
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96 | } |
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331 | bondari | 97 |