| 1 | /*
|
|---|
| 2 | * Copyright (c) 2016 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 libc
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 |
|
|---|
| 33 | /**
|
|---|
| 34 | * @file
|
|---|
| 35 | * @brief Userspace ELF loader.
|
|---|
| 36 | */
|
|---|
| 37 |
|
|---|
| 38 | #include <elf/elf_load.h>
|
|---|
| 39 | #include <elf/elf_mod.h>
|
|---|
| 40 | #include <errno.h>
|
|---|
| 41 | #include <stdio.h>
|
|---|
| 42 | #include <stdlib.h>
|
|---|
| 43 | #include <vfs/vfs.h>
|
|---|
| 44 |
|
|---|
| 45 | #ifdef CONFIG_RTLD
|
|---|
| 46 | #include <rtld/rtld.h>
|
|---|
| 47 | #endif
|
|---|
| 48 |
|
|---|
| 49 | #define DPRINTF(...)
|
|---|
| 50 |
|
|---|
| 51 | /** Load ELF program.
|
|---|
| 52 | *
|
|---|
| 53 | * @param file File handle
|
|---|
| 54 | * @param info Place to store ELF program information
|
|---|
| 55 | * @return EOK on success or an error code
|
|---|
| 56 | */
|
|---|
| 57 | errno_t elf_load(int file, elf_info_t *info)
|
|---|
| 58 | {
|
|---|
| 59 | errno_t rc = EOK;
|
|---|
| 60 |
|
|---|
| 61 | rc = elf_load_file(file, 0, &info->finfo);
|
|---|
| 62 | if (rc != EOK) {
|
|---|
| 63 | DPRINTF("Failed to load executable '%s'.\n", file_name);
|
|---|
| 64 | return rc;
|
|---|
| 65 | }
|
|---|
| 66 |
|
|---|
| 67 | #ifdef CONFIG_RTLD
|
|---|
| 68 | rtld_t *env;
|
|---|
| 69 | rc = rtld_prog_process(&info->finfo, &env);
|
|---|
| 70 | info->env = env;
|
|---|
| 71 | #else
|
|---|
| 72 | rc = ENOTSUP;
|
|---|
| 73 | #endif
|
|---|
| 74 | return rc;
|
|---|
| 75 | }
|
|---|
| 76 |
|
|---|
| 77 | /** Set ELF-related PCB entries.
|
|---|
| 78 | *
|
|---|
| 79 | * Fills the program control block @a pcb with information from
|
|---|
| 80 | * @a info.
|
|---|
| 81 | *
|
|---|
| 82 | * @param info Program info structure
|
|---|
| 83 | * @param pcb PCB
|
|---|
| 84 | */
|
|---|
| 85 | void elf_set_pcb(elf_info_t *info, pcb_t *pcb)
|
|---|
| 86 | {
|
|---|
| 87 | pcb->entry = info->finfo.entry;
|
|---|
| 88 | pcb->dynamic = info->finfo.dynamic;
|
|---|
| 89 | pcb->rtld_runtime = info->env;
|
|---|
| 90 | }
|
|---|
| 91 |
|
|---|
| 92 | /** @}
|
|---|
| 93 | */
|
|---|
