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| Rev | Author | Line No. | Line |
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| 2963 | 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 generic |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 3101 | svoboda | 33 | * @brief ELF loader structures and public functions. |
| 2963 | svoboda | 34 | */ |
| 35 | |||
| 36 | #ifndef ELF_LOAD_H_ |
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| 37 | #define ELF_LOAD_H_ |
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| 38 | |||
| 39 | #include <arch/elf.h> |
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| 40 | #include <sys/types.h> |
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| 3160 | svoboda | 41 | #include <loader/pcb.h> |
| 2963 | svoboda | 42 | |
| 43 | #include "elf.h" |
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| 44 | |||
| 3552 | svoboda | 45 | typedef enum { |
| 46 | /** Leave all segments in RW access mode. */ |
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| 47 | ELDF_RW = 1 |
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| 48 | } eld_flags_t; |
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| 49 | |||
| 2964 | svoboda | 50 | /** |
| 51 | * Some data extracted from the headers are stored here |
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| 52 | */ |
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| 53 | typedef struct { |
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| 54 | /** Entry point */ |
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| 55 | entry_point_t entry; |
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| 2963 | svoboda | 56 | |
| 3004 | svoboda | 57 | /** ELF interpreter name or NULL if statically-linked */ |
| 58 | char *interp; |
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| 59 | |||
| 2964 | svoboda | 60 | /** Pointer to the dynamic section */ |
| 3004 | svoboda | 61 | void *dynamic; |
| 2964 | svoboda | 62 | } elf_info_t; |
| 63 | |||
| 64 | /** |
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| 65 | * Holds information about an ELF binary being loaded. |
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| 66 | */ |
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| 67 | typedef struct { |
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| 68 | /** Filedescriptor of the file from which we are loading */ |
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| 69 | int fd; |
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| 70 | |||
| 71 | /** Difference between run-time addresses and link-time addresses */ |
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| 72 | uintptr_t bias; |
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| 73 | |||
| 3552 | svoboda | 74 | /** Flags passed to the ELF loader. */ |
| 75 | eld_flags_t flags; |
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| 76 | |||
| 2964 | svoboda | 77 | /** A copy of the ELF file header */ |
| 78 | elf_header_t *header; |
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| 79 | |||
| 80 | /** Store extracted info here */ |
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| 81 | elf_info_t *info; |
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| 82 | } elf_ld_t; |
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| 83 | |||
| 3552 | svoboda | 84 | int elf_load_file(char *file_name, size_t so_bias, eld_flags_t flags, |
| 85 | elf_info_t *info); |
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| 3170 | svoboda | 86 | void elf_run(elf_info_t *info, pcb_t *pcb); |
| 87 | void elf_create_pcb(elf_info_t *info, pcb_t *pcb); |
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| 2964 | svoboda | 88 | |
| 2963 | svoboda | 89 | #endif |
| 90 | |||
| 91 | /** @} |
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| 92 | */ |