1 /* 2 * Copyright (C) Paul Mackerras 1997. 3 * 4 * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 #include <stdarg.h> 12 #include <stddef.h> 13 #include "elf.h" 14 #include "page.h" 15 #include "string.h" 16 #include "stdio.h" 17 18 int parse_elf64(void *hdr, struct elf_info *info) 19 { 20 Elf64_Ehdr *elf64 = hdr; 21 Elf64_Phdr *elf64ph; 22 unsigned int i; 23 24 if (!(elf64->e_ident[EI_MAG0] == ELFMAG0 && 25 elf64->e_ident[EI_MAG1] == ELFMAG1 && 26 elf64->e_ident[EI_MAG2] == ELFMAG2 && 27 elf64->e_ident[EI_MAG3] == ELFMAG3 && 28 elf64->e_ident[EI_CLASS] == ELFCLASS64 && 29 #ifdef __LITTLE_ENDIAN__ 30 elf64->e_ident[EI_DATA] == ELFDATA2LSB && 31 #else 32 elf64->e_ident[EI_DATA] == ELFDATA2MSB && 33 #endif 34 (elf64->e_type == ET_EXEC || 35 elf64->e_type == ET_DYN) && 36 elf64->e_machine == EM_PPC64)) 37 return 0; 38 39 elf64ph = (Elf64_Phdr *)((unsigned long)elf64 + 40 (unsigned long)elf64->e_phoff); 41 for (i = 0; i < (unsigned int)elf64->e_phnum; i++, elf64ph++) 42 if (elf64ph->p_type == PT_LOAD) 43 break; 44 if (i >= (unsigned int)elf64->e_phnum) 45 return 0; 46 47 info->loadsize = (unsigned long)elf64ph->p_filesz; 48 info->memsize = (unsigned long)elf64ph->p_memsz; 49 info->elfoffset = (unsigned long)elf64ph->p_offset; 50 51 return 1; 52 } 53 54 int parse_elf32(void *hdr, struct elf_info *info) 55 { 56 Elf32_Ehdr *elf32 = hdr; 57 Elf32_Phdr *elf32ph; 58 unsigned int i; 59 60 if (!(elf32->e_ident[EI_MAG0] == ELFMAG0 && 61 elf32->e_ident[EI_MAG1] == ELFMAG1 && 62 elf32->e_ident[EI_MAG2] == ELFMAG2 && 63 elf32->e_ident[EI_MAG3] == ELFMAG3 && 64 elf32->e_ident[EI_CLASS] == ELFCLASS32 && 65 elf32->e_ident[EI_DATA] == ELFDATA2MSB && 66 (elf32->e_type == ET_EXEC || 67 elf32->e_type == ET_DYN) && 68 elf32->e_machine == EM_PPC)) 69 return 0; 70 71 elf32ph = (Elf32_Phdr *) ((unsigned long)elf32 + elf32->e_phoff); 72 for (i = 0; i < elf32->e_phnum; i++, elf32ph++) 73 if (elf32ph->p_type == PT_LOAD) 74 break; 75 if (i >= elf32->e_phnum) 76 return 0; 77 78 info->loadsize = elf32ph->p_filesz; 79 info->memsize = elf32ph->p_memsz; 80 info->elfoffset = elf32ph->p_offset; 81 return 1; 82 } 83