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2960 | svoboda | 1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
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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 | /** @addtogroup fs |
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30 | * @{ |
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3101 | svoboda | 31 | */ |
32 | /** @file |
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33 | * @brief Program Control Block interface. |
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34 | */ |
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2960 | svoboda | 35 | |
3160 | svoboda | 36 | #ifndef LIBC_PCB_H_ |
37 | #define LIBC_PCB_H_ |
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2960 | svoboda | 38 | |
2989 | svoboda | 39 | #include <sys/types.h> |
2960 | svoboda | 40 | |
2964 | svoboda | 41 | typedef void (*entry_point_t)(void); |
42 | |||
2960 | svoboda | 43 | /** |
44 | * Holds pointers to data passed from the program loader to the program |
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45 | * and/or to the dynamic linker. This includes the program entry point, |
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3160 | svoboda | 46 | * arguments, environment variables etc. |
2960 | svoboda | 47 | */ |
48 | typedef struct { |
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49 | /** Program entry point */ |
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2964 | svoboda | 50 | entry_point_t entry; |
2965 | svoboda | 51 | |
2989 | svoboda | 52 | /* |
53 | * ELF-specific data |
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54 | */ |
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2965 | svoboda | 55 | /** Pointer to ELF dynamic section of the program */ |
3160 | svoboda | 56 | void *dynamic; |
2989 | svoboda | 57 | /** Pointer to dynamic section of the runtime linker */ |
58 | void *rtld_dynamic; |
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59 | /** Runtime-linker load bias */ |
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60 | uintptr_t rtld_bias; |
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2960 | svoboda | 61 | } pcb_t; |
62 | |||
3160 | svoboda | 63 | // FIXME |
64 | #define PCB_ADDRESS 0x6fff0000 |
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65 | |||
2991 | svoboda | 66 | static inline pcb_t *__pcb_get(void) { |
2990 | svoboda | 67 | return (pcb_t *)PCB_ADDRESS; |
68 | } |
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69 | |||
2960 | svoboda | 70 | #endif |
71 | |||
72 | /** |
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73 | * @} |
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74 | */ |