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
18int 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
54int 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