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tools/elftypes.h

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+/*
+ * PSP Software Development Kit - http://www.pspdev.org
+ * -----------------------------------------------------------------------
+ * Licensed under the BSD license, see LICENSE in PSPSDK root for details.
+ *
+ * elftypes.h - Definitions for the different ELF types.
+ *
+ * Copyright (c) 2005 James Forshaw <tyranid@gmail.com>
+ *
+ * $Id: elftypes.h 1520 2005-12-04 20:09:36Z tyranid $
+ */
+
+#ifndef __ELF_TYPES_H__
+#define __ELF_TYPES_H__
+
+#include "types.h"
+
+#define ELF_MACHINE_MIPS 0x0008
+#define ELF_SH_STRTAB ".shstrtab"
+
+#define ELF_SECT_MAX_NAME 128
+
+/* Structure defining a single elf section */
+struct ElfSection
+{
+	/* Name index */
+	u32 iName;
+	/* Type of section */
+	u32 iType;
+	/* Section flags */
+	u32 iFlags;
+	/* Addr of section when loaded */
+	u32 iAddr;
+	/* Offset of the section in the elf */
+	u32 iOffset;
+	/* Size of the sections data */
+	u32 iSize;
+	/* Link info */
+	u32 iLink;
+	/* Info */
+	u32 iInfo;
+	/* Address alignment */
+	u32 iAddralign;
+	/* Entry size */
+	u32 iEntsize;
+
+	/* Aliased pointer to the data (in the original Elf) */
+	u8 *pData;
+	/* Name of the section */
+	char szName[ELF_SECT_MAX_NAME];
+	/* Index */
+	int iIndex;
+	/* Section Ref. Used for relocations */
+	struct ElfSection *pRef;
+	/* Indicates if this section is to be outputted */
+	int blOutput;
+};
+
+struct ElfProgram
+{
+	u32 iType;
+	u32 iOffset;
+	u32 iVaddr;
+	u32 iPaddr;
+	u32 iFilesz;
+	u32 iMemsz;
+	u32 iFlags;
+	u32 iAlign;
+
+	/* Aliased pointer to the data (in the original Elf)*/
+	u8  *pData;
+};
+
+/* Structure to hold elf header data, in native format */
+struct ElfHeader
+{
+	u32 iMagic;
+	u32 iClass;
+	u32 iData;
+	u32 iIdver;
+	u32 iType; 
+	u32 iMachine; 
+	u32 iVersion; 
+	u32 iEntry; 
+	u32 iPhoff; 
+	u32 iShoff; 
+	u32 iFlags; 
+	u32 iEhsize;
+	u32 iPhentsize; 
+	u32 iPhnum; 
+	u32 iShentsize; 
+	u32 iShnum; 
+	u32 iShstrndx; 
+};
+
+struct ElfReloc
+{
+	/* Pointer to the section name */
+	const char* secname;
+	/* Base address */
+	u32 base;
+	/* Type */
+	u32 type;
+	/* Symbol (if known) */
+	u32 symbol;
+	/* Offset into the file */
+	u32 offset;
+	/* New Address for the relocation (to do with what you will) */
+	u32 addr;
+};
+
+/* Define ELF types */
+typedef u32 Elf32_Addr; 
+typedef u16 Elf32_Half;
+typedef u32 Elf32_Off;
+typedef s32 Elf32_Sword;
+typedef u32 Elf32_Word;
+
+#define ELF_MAGIC	0x464C457F
+
+#define ELF_EXEC_TYPE 0x0002
+#define ELF_PRX_TYPE  0xFFA0
+
+#define SHT_NULL 0 
+#define SHT_PROGBITS 1 
+#define SHT_SYMTAB 2 
+#define SHT_STRTAB 3 
+#define SHT_RELA 4 
+#define SHT_HASH 5 
+#define SHT_DYNAMIC 6 
+#define SHT_NOTE 7 
+#define SHT_NOBITS 8 
+#define SHT_REL 9 
+#define SHT_SHLIB 10 
+#define SHT_DYNSYM 11 
+#define SHT_LOPROC 0x70000000 
+#define SHT_HIPROC 0x7fffffff 
+#define SHT_LOUSER 0x80000000 
+#define SHT_HIUSER 0xffffffff
+
+#define SHT_PRXRELOC (SHT_LOPROC | 0xA0)
+
+// MIPS Reloc Entry Types
+#define R_MIPS_NONE     0
+#define R_MIPS_16       1
+#define R_MIPS_32       2
+#define R_MIPS_REL32    3
+#define R_MIPS_26       4
+#define R_MIPS_HI16     5
+#define R_MIPS_LO16     6
+#define R_MIPS_GPREL16  7
+#define R_MIPS_LITERAL  8
+#define R_MIPS_GOT16    9
+#define R_MIPS_PC16     10
+#define R_MIPS_CALL16   11
+#define R_MIPS_GPREL32  12
+
+#define SHF_WRITE 		1
+#define SHF_ALLOC 		2
+#define SHF_EXECINSTR 	4
+
+#define PT_NULL 		0
+#define PT_LOAD 		1
+#define PT_DYNAMIC 		2
+#define PT_INTERP 		3
+#define PT_NOTE 		4
+#define PT_SHLIB 		5
+#define PT_PHDR 		6
+#define PT_LOPROC 		0x70000000
+#define PT_HIPROC 		0x7fffffff
+
+/* ELF file header */
+typedef struct { 
+	Elf32_Word e_magic;
+	u8 e_class;
+	u8 e_data;
+	u8 e_idver;
+	u8 e_pad[9];
+	Elf32_Half e_type; 
+	Elf32_Half e_machine; 
+	Elf32_Word e_version; 
+	Elf32_Addr e_entry; 
+	Elf32_Off e_phoff; 
+	Elf32_Off e_shoff; 
+	Elf32_Word e_flags; 
+	Elf32_Half e_ehsize; 
+	Elf32_Half e_phentsize; 
+	Elf32_Half e_phnum; 
+	Elf32_Half e_shentsize; 
+	Elf32_Half e_shnum; 
+	Elf32_Half e_shstrndx; 
+} __attribute__((packed)) Elf32_Ehdr;
+
+/* ELF section header */
+typedef struct { 
+	Elf32_Word sh_name; 
+	Elf32_Word sh_type; 
+	Elf32_Word sh_flags; 
+	Elf32_Addr sh_addr; 
+	Elf32_Off sh_offset; 
+	Elf32_Word sh_size; 
+	Elf32_Word sh_link; 
+	Elf32_Word sh_info; 
+	Elf32_Word sh_addralign; 
+	Elf32_Word sh_entsize; 
+} __attribute__((packed)) Elf32_Shdr;
+
+typedef struct { 
+	Elf32_Word p_type; 
+	Elf32_Off p_offset; 
+	Elf32_Addr p_vaddr; 
+	Elf32_Addr p_paddr; 
+	Elf32_Word p_filesz; 
+	Elf32_Word p_memsz; 
+	Elf32_Word p_flags; 
+	Elf32_Word p_align; 
+} Elf32_Phdr;
+
+#define ELF32_R_SYM(i) ((i)>>8) 
+#define ELF32_R_TYPE(i) ((u8)(i&0xFF))
+
+typedef struct { 
+	Elf32_Addr r_offset; 
+	Elf32_Word r_info; 
+} Elf32_Rel;
+
+typedef struct { 
+	Elf32_Word st_name; 
+	Elf32_Addr st_value; 
+	Elf32_Word st_size; 
+	unsigned char st_info; 
+	unsigned char st_other; 
+	Elf32_Half st_shndx; 
+} __attribute__((packed)) Elf32_Sym;
+
+#define STB_LOCAL 0
+#define STB_GLOBAL 1
+#define STB_WEAK 2
+#define STB_LOPROC 13
+#define STB_HIPROC 15
+
+#define ELF32_ST_BIND(i) ((i)>>4)
+#define ELF32_ST_TYPE(i) ((i)&0xf)
+#define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+
+#endif