# elftypes.h

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    00001 /*
    00002  * PSP Software Development Kit - http://www.pspdev.org
    00003  * -----------------------------------------------------------------------
    00004  * Licensed under the BSD license, see LICENSE in PSPSDK root for details.
    00005  *
    00006  * elftypes.h - Definitions for the different ELF types.
    00007  *
    00008  * Copyright (c) 2005 James Forshaw <tyranid@gmail.com>
    00009  *
    00010  * $Id: elftypes.h 1095 2005-09-27 21:02:16Z jim $
    00011  */
    00012
    00013 #ifndef __ELF_TYPES_H__
    00014 #define __ELF_TYPES_H__
    00015
    00016 #include "types.h"
    00017
    00018 #define ELF_MACHINE_MIPS 0x0008
    00019 #define ELF_SH_STRTAB ".shstrtab"
    00020
    00021 #define ELF_SECT_MAX_NAME 128
    00022
    00023 /* Structure defining a single elf section */
    00024 struct ElfSection
    00025 {
    00026         /* Name index */
    00027         u32 iName;
    00028         /* Type of section */
    00029         u32 iType;
    00030         /* Section flags */
    00031         u32 iFlags;
    00032         /* Addr of section when loaded */
    00033         u32 iAddr;
    00034         /* Offset of the section in the elf */
    00035         u32 iOffset;
    00036         /* Size of the sections data */
    00037         u32 iSize;
    00038         /* Link info */
    00039         u32 iLink;
    00040         /* Info */
    00041         u32 iInfo;
    00042         /* Address alignment */
    00043         u32 iAddralign;
    00044         /* Entry size */
    00045         u32 iEntsize;
    00046
    00047         /* Aliased pointer to the data (in the original Elf) */
    00048         u8 *pData;
    00049         /* Name of the section */
    00050         char szName[ELF_SECT_MAX_NAME];
    00051         /* Index */
    00052         int iIndex;
    00053         /* Section Ref. Used for relocations */
    00054         struct ElfSection *pRef;
    00055         /* Indicates if this section is to be outputted */
    00056         int blOutput;
    00057 };
    00058
    00059 struct ElfProgram
    00060 {
    00061         u32 iType;
    00062         u32 iOffset;
    00063         u32 iVaddr;
    00064         u32 iPaddr;
    00065         u32 iFilesz;
    00066         u32 iMemsz;
    00067         u32 iFlags;
    00068         u32 iAlign;
    00069
    00070         /* Aliased pointer to the data (in the original Elf)*/
    00071         u8  *pData;
    00072 };
    00073
    00074 /* Structure to hold elf header data, in native format */
    00075 struct ElfHeader
    00076 {
    00077         u32 iMagic;
    00078         u32 iClass;
    00079         u32 iData;
    00080         u32 iIdver;
    00081         u32 iType;
    00082         u32 iMachine;
    00083         u32 iVersion;
    00084         u32 iEntry;
    00085         u32 iPhoff;
    00086         u32 iShoff;
    00087         u32 iFlags;
    00088         u32 iEhsize;
    00089         u32 iPhentsize;
    00090         u32 iPhnum;
    00091         u32 iShentsize;
    00092         u32 iShnum;
    00093         u32 iShstrndx;
    00094 };
    00095
    00096 struct ElfReloc
    00097 {
    00098         /* Pointer to the section name */
    00099         const char* secname;
    00100         /* Base address */
    00101         u32 base;
    00102         /* Type */
    00103         u32 type;
    00104         /* Symbol (if known) */
    00105         u32 symbol;
    00106         /* Offset into the file */
    00107         u32 offset;
    00108         /* New Address for the relocation (to do with what you will) */
    00109         u32 addr;
    00110 };
    00111
    00112 /* Define ELF types */
    00113 typedef u32 Elf32_Addr;
    00114 typedef u16 Elf32_Half;
    00115 typedef u32 Elf32_Off;
    00116 typedef s32 Elf32_Sword;
    00117 typedef u32 Elf32_Word;
    00118
    00119 #define ELF_MAGIC       0x464C457F
    00120
    00121 #define ELF_EXEC_TYPE 0x0002
    00122 #define ELF_PRX_TYPE  0xFFA0
    00123
    00124 #define SHT_NULL 0
    00125 #define SHT_PROGBITS 1
    00126 #define SHT_SYMTAB 2
    00127 #define SHT_STRTAB 3
    00128 #define SHT_RELA 4
    00129 #define SHT_HASH 5
    00130 #define SHT_DYNAMIC 6
    00131 #define SHT_NOTE 7
    00132 #define SHT_NOBITS 8
    00133 #define SHT_REL 9
    00134 #define SHT_SHLIB 10
    00135 #define SHT_DYNSYM 11
    00136 #define SHT_LOPROC 0x70000000
    00137 #define SHT_HIPROC 0x7fffffff
    00138 #define SHT_LOUSER 0x80000000
    00139 #define SHT_HIUSER 0xffffffff
    00140
    00141 #define SHT_PRXRELOC (SHT_LOPROC | 0xA0)
    00142
    00143 // MIPS Reloc Entry Types
    00144 #define R_MIPS_NONE     0
    00145 #define R_MIPS_16       1
    00146 #define R_MIPS_32       2
    00147 #define R_MIPS_REL32    3
    00148 #define R_MIPS_26       4
    00149 #define R_MIPS_HI16     5
    00150 #define R_MIPS_LO16     6
    00151 #define R_MIPS_GPREL16  7
    00152 #define R_MIPS_LITERAL  8
    00153 #define R_MIPS_GOT16    9
    00154 #define R_MIPS_PC16     10
    00155 #define R_MIPS_CALL16   11
    00156 #define R_MIPS_GPREL32  12
    00157
    00158 #define SHF_WRITE               1
    00159 #define SHF_ALLOC               2
    00160 #define SHF_EXECINSTR   4
    00161
    00162 #define PT_NULL                 0
    00163 #define PT_LOAD                 1
    00164 #define PT_DYNAMIC              2
    00165 #define PT_INTERP               3
    00166 #define PT_NOTE                 4
    00167 #define PT_SHLIB                5
    00168 #define PT_PHDR                 6
    00169 #define PT_LOPROC               0x70000000
    00170 #define PT_HIPROC               0x7fffffff
    00171
    00172 /* ELF file header */
    00173 typedef struct {
    00174         Elf32_Word e_magic;
    00175         u8 e_class;
    00176         u8 e_data;
    00177         u8 e_idver;
    00178         u8 e_pad[9];
    00179         Elf32_Half e_type;
    00180         Elf32_Half e_machine;
    00181         Elf32_Word e_version;
    00182         Elf32_Addr e_entry;
    00183         Elf32_Off e_phoff;
    00184         Elf32_Off e_shoff;
    00185         Elf32_Word e_flags;
    00186         Elf32_Half e_ehsize;
    00187         Elf32_Half e_phentsize;
    00188         Elf32_Half e_phnum;
    00189         Elf32_Half e_shentsize;
    00190         Elf32_Half e_shnum;
    00191         Elf32_Half e_shstrndx;
    00192 } __attribute__((packed)) Elf32_Ehdr;
    00193
    00194 /* ELF section header */
    00195 typedef struct {
    00196         Elf32_Word sh_name;
    00197         Elf32_Word sh_type;
    00198         Elf32_Word sh_flags;
    00199         Elf32_Addr sh_addr;
    00200         Elf32_Off sh_offset;
    00201         Elf32_Word sh_size;
    00202         Elf32_Word sh_link;
    00203         Elf32_Word sh_info;
    00204         Elf32_Word sh_addralign;
    00205         Elf32_Word sh_entsize;
    00206 } __attribute__((packed)) Elf32_Shdr;
    00207
    00208 typedef struct {
    00209         Elf32_Word p_type;
    00210         Elf32_Off p_offset;
    00211         Elf32_Addr p_vaddr;
    00212         Elf32_Addr p_paddr;
    00213         Elf32_Word p_filesz;
    00214         Elf32_Word p_memsz;
    00215         Elf32_Word p_flags;
    00216         Elf32_Word p_align;
    00217 } Elf32_Phdr;
    00218
    00219 #define ELF32_R_SYM(i) ((i)>>8)
    00220 #define ELF32_R_TYPE(i) ((u8)(i&0xFF))
    00221
    00222 typedef struct {
    00223         Elf32_Addr r_offset;
    00224         Elf32_Word r_info;
    00225 } Elf32_Rel;
    00226
    00227 typedef struct {
    00228         Elf32_Word st_name;
    00229         Elf32_Addr st_value;
    00230         Elf32_Word st_size;
    00231         unsigned char st_info;
    00232         unsigned char st_other;
    00233         Elf32_Half st_shndx;
    00234 } __attribute__((packed)) Elf32_Sym;
    00235
    00236 #endif