| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) Paul Mackerras 1997. |
| 4 | * |
| 5 | * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner. |
| 6 | */ |
| 7 | #include <stdarg.h> |
| 8 | #include <stddef.h> |
| 9 | #include "elf.h" |
| 10 | #include "page.h" |
| 11 | #include "string.h" |
| 12 | #include "stdio.h" |
| 13 | |
| 14 | int parse_elf64(void *hdr, struct elf_info *info) |
| 15 | { |
| 16 | Elf64_Ehdr *elf64 = hdr; |
| 17 | Elf64_Phdr *elf64ph; |
| 18 | unsigned int i; |
| 19 | |
| 20 | if (!(elf64->e_ident[EI_MAG0] == ELFMAG0 && |
| 21 | elf64->e_ident[EI_MAG1] == ELFMAG1 && |
| 22 | elf64->e_ident[EI_MAG2] == ELFMAG2 && |
| 23 | elf64->e_ident[EI_MAG3] == ELFMAG3 && |
| 24 | elf64->e_ident[EI_CLASS] == ELFCLASS64 && |
| 25 | #ifdef __LITTLE_ENDIAN__ |
| 26 | elf64->e_ident[EI_DATA] == ELFDATA2LSB && |
| 27 | #else |
| 28 | elf64->e_ident[EI_DATA] == ELFDATA2MSB && |
| 29 | #endif |
| 30 | (elf64->e_type == ET_EXEC || |
| 31 | elf64->e_type == ET_DYN) && |
| 32 | elf64->e_machine == EM_PPC64)) |
| 33 | return 0; |
| 34 | |
| 35 | elf64ph = (Elf64_Phdr *)((unsigned long)elf64 + |
| 36 | (unsigned long)elf64->e_phoff); |
| 37 | for (i = 0; i < (unsigned int)elf64->e_phnum; i++, elf64ph++) |
| 38 | if (elf64ph->p_type == PT_LOAD) |
| 39 | break; |
| 40 | if (i >= (unsigned int)elf64->e_phnum) |
| 41 | return 0; |
| 42 | |
| 43 | info->loadsize = (unsigned long)elf64ph->p_filesz; |
| 44 | info->memsize = (unsigned long)elf64ph->p_memsz; |
| 45 | info->elfoffset = (unsigned long)elf64ph->p_offset; |
| 46 | |
| 47 | return 1; |
| 48 | } |
| 49 | |
| 50 | int parse_elf32(void *hdr, struct elf_info *info) |
| 51 | { |
| 52 | Elf32_Ehdr *elf32 = hdr; |
| 53 | Elf32_Phdr *elf32ph; |
| 54 | unsigned int i; |
| 55 | |
| 56 | if (!(elf32->e_ident[EI_MAG0] == ELFMAG0 && |
| 57 | elf32->e_ident[EI_MAG1] == ELFMAG1 && |
| 58 | elf32->e_ident[EI_MAG2] == ELFMAG2 && |
| 59 | elf32->e_ident[EI_MAG3] == ELFMAG3 && |
| 60 | elf32->e_ident[EI_CLASS] == ELFCLASS32 && |
| 61 | elf32->e_ident[EI_DATA] == ELFDATA2MSB && |
| 62 | (elf32->e_type == ET_EXEC || |
| 63 | elf32->e_type == ET_DYN) && |
| 64 | elf32->e_machine == EM_PPC)) |
| 65 | return 0; |
| 66 | |
| 67 | elf32ph = (Elf32_Phdr *) ((unsigned long)elf32 + elf32->e_phoff); |
| 68 | for (i = 0; i < elf32->e_phnum; i++, elf32ph++) |
| 69 | if (elf32ph->p_type == PT_LOAD) |
| 70 | break; |
| 71 | if (i >= elf32->e_phnum) |
| 72 | return 0; |
| 73 | |
| 74 | info->loadsize = elf32ph->p_filesz; |
| 75 | info->memsize = elf32ph->p_memsz; |
| 76 | info->elfoffset = elf32ph->p_offset; |
| 77 | return 1; |
| 78 | } |
| 79 |