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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 | |||
| 3474 | svoboda | 43 | /** Program Control Block. |
| 44 | * |
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| 2960 | svoboda | 45 | * Holds pointers to data passed from the program loader to the program |
| 46 | * and/or to the dynamic linker. This includes the program entry point, |
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| 3160 | svoboda | 47 | * arguments, environment variables etc. |
| 2960 | svoboda | 48 | */ |
| 49 | typedef struct { |
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| 50 | /** Program entry point */ |
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| 2964 | svoboda | 51 | entry_point_t entry; |
| 2965 | svoboda | 52 | |
| 3171 | svoboda | 53 | /** Number of command-line arguments */ |
| 54 | int argc; |
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| 55 | /** Command-line arguments */ |
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| 56 | char **argv; |
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| 57 | |||
| 2989 | svoboda | 58 | /* |
| 59 | * ELF-specific data |
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| 60 | */ |
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| 2965 | svoboda | 61 | /** Pointer to ELF dynamic section of the program */ |
| 3160 | svoboda | 62 | void *dynamic; |
| 2989 | svoboda | 63 | /** Pointer to dynamic section of the runtime linker */ |
| 64 | void *rtld_dynamic; |
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| 65 | /** Runtime-linker load bias */ |
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| 66 | uintptr_t rtld_bias; |
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| 2960 | svoboda | 67 | } pcb_t; |
| 68 | |||
| 3171 | svoboda | 69 | extern pcb_t *__pcb; |
| 3160 | svoboda | 70 | |
| 2960 | svoboda | 71 | #endif |
| 72 | |||
| 73 | /** |
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| 74 | * @} |
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| 75 | */ |