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1 #ifndef _PPC_BOOT_ELF_H_
2 #define _PPC_BOOT_ELF_H_
3 
4 /* 32-bit ELF base types. */
5 typedef unsigned int Elf32_Addr;
6 typedef unsigned short Elf32_Half;
7 typedef unsigned int Elf32_Off;
8 typedef signed int Elf32_Sword;
9 typedef unsigned int Elf32_Word;
10 
11 /* 64-bit ELF base types. */
12 typedef unsigned long long Elf64_Addr;
13 typedef unsigned short Elf64_Half;
14 typedef signed short Elf64_SHalf;
15 typedef unsigned long long Elf64_Off;
16 typedef signed int Elf64_Sword;
17 typedef unsigned int Elf64_Word;
18 typedef unsigned long long Elf64_Xword;
19 typedef signed long long Elf64_Sxword;
20 
21 /* These constants are for the segment types stored in the image headers */
22 #define PT_NULL    0
23 #define PT_LOAD    1
24 #define PT_DYNAMIC 2
25 #define PT_INTERP  3
26 #define PT_NOTE    4
27 #define PT_SHLIB   5
28 #define PT_PHDR    6
29 #define PT_TLS     7		/* Thread local storage segment */
30 #define PT_LOOS    0x60000000	/* OS-specific */
31 #define PT_HIOS    0x6fffffff	/* OS-specific */
32 #define PT_LOPROC  0x70000000
33 #define PT_HIPROC  0x7fffffff
34 #define PT_GNU_EH_FRAME		0x6474e550
35 
36 #define PT_GNU_STACK	(PT_LOOS + 0x474e551)
37 
38 /* These constants define the different elf file types */
39 #define ET_NONE   0
40 #define ET_REL    1
41 #define ET_EXEC   2
42 #define ET_DYN    3
43 #define ET_CORE   4
44 #define ET_LOPROC 0xff00
45 #define ET_HIPROC 0xffff
46 
47 /* These constants define the various ELF target machines */
48 #define EM_NONE  0
49 #define EM_PPC	       20	/* PowerPC */
50 #define EM_PPC64       21	/* PowerPC64 */
51 
52 #define EI_NIDENT	16
53 
54 typedef struct elf32_hdr {
55 	unsigned char e_ident[EI_NIDENT];
56 	Elf32_Half e_type;
57 	Elf32_Half e_machine;
58 	Elf32_Word e_version;
59 	Elf32_Addr e_entry;	/* Entry point */
60 	Elf32_Off e_phoff;
61 	Elf32_Off e_shoff;
62 	Elf32_Word e_flags;
63 	Elf32_Half e_ehsize;
64 	Elf32_Half e_phentsize;
65 	Elf32_Half e_phnum;
66 	Elf32_Half e_shentsize;
67 	Elf32_Half e_shnum;
68 	Elf32_Half e_shstrndx;
69 } Elf32_Ehdr;
70 
71 typedef struct elf64_hdr {
72 	unsigned char e_ident[16];	/* ELF "magic number" */
73 	Elf64_Half e_type;
74 	Elf64_Half e_machine;
75 	Elf64_Word e_version;
76 	Elf64_Addr e_entry;	/* Entry point virtual address */
77 	Elf64_Off e_phoff;	/* Program header table file offset */
78 	Elf64_Off e_shoff;	/* Section header table file offset */
79 	Elf64_Word e_flags;
80 	Elf64_Half e_ehsize;
81 	Elf64_Half e_phentsize;
82 	Elf64_Half e_phnum;
83 	Elf64_Half e_shentsize;
84 	Elf64_Half e_shnum;
85 	Elf64_Half e_shstrndx;
86 } Elf64_Ehdr;
87 
88 /* These constants define the permissions on sections in the program
89    header, p_flags. */
90 #define PF_R		0x4
91 #define PF_W		0x2
92 #define PF_X		0x1
93 
94 typedef struct elf32_phdr {
95 	Elf32_Word p_type;
96 	Elf32_Off p_offset;
97 	Elf32_Addr p_vaddr;
98 	Elf32_Addr p_paddr;
99 	Elf32_Word p_filesz;
100 	Elf32_Word p_memsz;
101 	Elf32_Word p_flags;
102 	Elf32_Word p_align;
103 } Elf32_Phdr;
104 
105 typedef struct elf64_phdr {
106 	Elf64_Word p_type;
107 	Elf64_Word p_flags;
108 	Elf64_Off p_offset;	/* Segment file offset */
109 	Elf64_Addr p_vaddr;	/* Segment virtual address */
110 	Elf64_Addr p_paddr;	/* Segment physical address */
111 	Elf64_Xword p_filesz;	/* Segment size in file */
112 	Elf64_Xword p_memsz;	/* Segment size in memory */
113 	Elf64_Xword p_align;	/* Segment alignment, file & memory */
114 } Elf64_Phdr;
115 
116 #define	EI_MAG0		0	/* e_ident[] indexes */
117 #define	EI_MAG1		1
118 #define	EI_MAG2		2
119 #define	EI_MAG3		3
120 #define	EI_CLASS	4
121 #define	EI_DATA		5
122 #define	EI_VERSION	6
123 #define	EI_OSABI	7
124 #define	EI_PAD		8
125 
126 #define	ELFMAG0		0x7f	/* EI_MAG */
127 #define	ELFMAG1		'E'
128 #define	ELFMAG2		'L'
129 #define	ELFMAG3		'F'
130 #define	ELFMAG		"\177ELF"
131 #define	SELFMAG		4
132 
133 #define	ELFCLASSNONE	0	/* EI_CLASS */
134 #define	ELFCLASS32	1
135 #define	ELFCLASS64	2
136 #define	ELFCLASSNUM	3
137 
138 #define ELFDATANONE	0	/* e_ident[EI_DATA] */
139 #define ELFDATA2LSB	1
140 #define ELFDATA2MSB	2
141 
142 #define EV_NONE		0	/* e_version, EI_VERSION */
143 #define EV_CURRENT	1
144 #define EV_NUM		2
145 
146 #define ELFOSABI_NONE	0
147 #define ELFOSABI_LINUX	3
148 
149 struct elf_info {
150 	unsigned long loadsize;
151 	unsigned long memsize;
152 	unsigned long elfoffset;
153 };
154 int parse_elf64(void *hdr, struct elf_info *info);
155 int parse_elf32(void *hdr, struct elf_info *info);
156 
157 #endif				/* _PPC_BOOT_ELF_H_ */
158