| [c98e6ee] | 1 | /*
|
|---|
| 2 | * Copyright (c) 2008 Jiri Svoboda
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup fs
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | * @brief Program Control Block interface.
|
|---|
| 34 | */
|
|---|
| 35 |
|
|---|
| 36 | #ifndef LIBC_PCB_H_
|
|---|
| 37 | #define LIBC_PCB_H_
|
|---|
| 38 |
|
|---|
| 39 | #include <sys/types.h>
|
|---|
| 40 |
|
|---|
| 41 | typedef void (*entry_point_t)(void);
|
|---|
| 42 |
|
|---|
| [45454e9b] | 43 | /** Program Control Block.
|
|---|
| 44 | *
|
|---|
| [c98e6ee] | 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,
|
|---|
| 47 | * arguments, environment variables etc.
|
|---|
| [76d0d284] | 48 | *
|
|---|
| [c98e6ee] | 49 | */
|
|---|
| 50 | typedef struct {
|
|---|
| [49093a4] | 51 | /** Program entry point. */
|
|---|
| [c98e6ee] | 52 | entry_point_t entry;
|
|---|
| [76d0d284] | 53 |
|
|---|
| [622cdbe] | 54 | /** Current working directory. */
|
|---|
| 55 | char *cwd;
|
|---|
| [76d0d284] | 56 |
|
|---|
| [49093a4] | 57 | /** Number of command-line arguments. */
|
|---|
| [c98e6ee] | 58 | int argc;
|
|---|
| [49093a4] | 59 | /** Command-line arguments. */
|
|---|
| [c98e6ee] | 60 | char **argv;
|
|---|
| [76d0d284] | 61 |
|
|---|
| 62 | /** Number of preset files. */
|
|---|
| [7171760] | 63 | unsigned int filc;
|
|---|
| [76d0d284] | 64 |
|
|---|
| [c98e6ee] | 65 | /*
|
|---|
| [49093a4] | 66 | * ELF-specific data.
|
|---|
| [c98e6ee] | 67 | */
|
|---|
| [76d0d284] | 68 |
|
|---|
| [49093a4] | 69 | /** Pointer to ELF dynamic section of the program. */
|
|---|
| [c98e6ee] | 70 | void *dynamic;
|
|---|
| [1ea99cc] | 71 | /** Pointer to dynamic linker state structure (runtime_env_t). */
|
|---|
| 72 | void *rtld_runtime;
|
|---|
| [c98e6ee] | 73 | } pcb_t;
|
|---|
| 74 |
|
|---|
| [49093a4] | 75 | /**
|
|---|
| 76 | * A pointer to the program control block. Having received the PCB pointer,
|
|---|
| 77 | * the C library startup code stores it here for later use.
|
|---|
| 78 | */
|
|---|
| [c98e6ee] | 79 | extern pcb_t *__pcb;
|
|---|
| 80 |
|
|---|
| 81 | #endif
|
|---|
| 82 |
|
|---|
| 83 | /**
|
|---|
| 84 | * @}
|
|---|
| 85 | */
|
|---|
