| /* |
| * Copyright 2012 Google Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but without any warranty; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <arch/cache.h> |
| #include <string.h> |
| |
| #include "base/elf.h" |
| |
| void load_elf(Elf32_Ehdr *ehdr, void *param) |
| { |
| uintptr_t base = (uintptr_t)ehdr; |
| uintptr_t addr = (uintptr_t)ehdr + ehdr->e_phoff; |
| uintptr_t step = ehdr->e_phentsize; |
| int num = ehdr->e_phnum; |
| |
| // Copy over the ELF segments. |
| while (num--) { |
| Elf32_Phdr *phdr = (Elf32_Phdr *)addr; |
| addr += step; |
| |
| if (phdr->p_type != ElfPTypeLoad) |
| continue; |
| |
| uint8_t *dest = (uint8_t *)(uintptr_t)phdr->p_paddr; |
| uint8_t *src = (uint8_t *)(uintptr_t)(base + phdr->p_offset); |
| uint32_t filesz = phdr->p_filesz; |
| uint32_t memsz = phdr->p_memsz; |
| |
| if (filesz) |
| memcpy(dest, src, filesz); |
| if (memsz > filesz) |
| memset(dest + filesz, 0, memsz - filesz); |
| } |
| |
| cache_sync_instructions(); |
| |
| // Go for it! |
| typedef void (*entry_func)(void *); |
| ((entry_func)ehdr->e_entry)(param); |
| } |