elf.h

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#define ELF_GOT         ".got"		/* global offset table */
#define ELF_HASH        ".hash"		/* symbol hash table */
#define ELF_INIT        ".init"		/* initialization code */
#define ELF_INIT_ARRAY	".init_array"	/* Array of constuctors */
#define ELF_INTERP	".interp"	/* Pathname of program interpreter */
#define ELF_LINE	".line"		/* Symbolic line numnber information */
#define ELF_NOTE	".note"		/* Contains note section */
#define ELF_PLT		".plt"		/* Procedure linkage table */
#define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
#define ELF_REL_DATA    ".rel.data"	/* relocation data */
#define ELF_REL_FINI    ".rel.fini"	/* relocation termination code */
#define ELF_REL_INIT    ".rel.init"	/* relocation initialization code */
#define ELF_REL_DYN     ".rel.dyn"	/* relocaltion dynamic link info */
#define ELF_REL_RODATA  ".rel.rodata"	/* relocation read-only data */
#define ELF_REL_TEXT    ".rel.text"	/* relocation code */
#define ELF_RODATA      ".rodata"	/* read-only data */
#define ELF_RODATA1     ".rodata1"	/* read-only data */
#define ELF_SHSTRTAB    ".shstrtab"	/* section header string table */
#define ELF_STRTAB      ".strtab"	/* string table */
#define ELF_SYMTAB      ".symtab"	/* symbol table */
#define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */
#define ELF_TBSS	".tbss"		/* thread local uninit data */
#define ELF_TDATA	".tdata"	/* thread local init data */
#define ELF_TDATA1	".tdata1"	/* thread local init data */
#define ELF_TEXT        ".text"		/* code */

/* Section Attribute Flags - sh_flags */
#define SHF_WRITE	0x1		/* Writable */
#define SHF_ALLOC	0x2		/* occupies memory */
#define SHF_EXECINSTR	0x4		/* executable */
#define SHF_MERGE	0x10		/* Might be merged */
#define SHF_STRINGS	0x20		/* Contains NULL terminated strings */
#define SHF_INFO_LINK	0x40		/* sh_info contains SHT index */
#define SHF_LINK_ORDER	0x80		/* Preserve order after combining*/
#define SHF_OS_NONCONFORMING 0x100	/* Non-standard OS specific handling */
#define SHF_GROUP	0x200		/* Member of section group */
#define SHF_TLS		0x400		/* Thread local storage */
#define SHF_MASKOS	0x0ff00000	/* OS specific */
#define SHF_MASKPROC	0xf0000000	/* reserved bits for processor */
					/*  specific section attributes */

/* Section Group Flags */
#define GRP_COMDAT	0x1		/* COMDAT group */
#define GRP_MASKOS	0x0ff00000	/* Mask OS specific flags */
#define GRP_MASKPROC	0xf0000000	/* Mask processor specific flags */

/* Symbol Table Entry */
typedef struct elf32_sym {
	Elf32_Word	st_name;	/* name - index into string table */
	Elf32_Addr	st_value;	/* symbol value */
	Elf32_Word	st_size;	/* symbol size */
	unsigned char	st_info;	/* type and binding */
	unsigned char	st_other;	/* 0 - no defined meaning */
	Elf32_Half	st_shndx;	/* section header index */
} Elf32_Sym;

/* Symbol table index */
#define STN_UNDEF	0		/* undefined */

/* Extract symbol info - st_info */
#define ELF32_ST_BIND(x)	((x) >> 4)
#define ELF32_ST_TYPE(x)	(((unsigned int) x) & 0xf)
#define ELF32_ST_INFO(b,t)	(((b) << 4) + ((t) & 0xf))
#define ELF32_ST_VISIBILITY(x)	((x) & 0x3)

/* Symbol Binding - ELF32_ST_BIND - st_info */
#define STB_LOCAL	0		/* Local symbol */
#define STB_GLOBAL	1		/* Global symbol */
#define STB_WEAK	2		/* like global - lower precedence */
#define STB_NUM		3		/* number of symbol bindings */
#define STB_LOOS	10		/* reserved range for operating */
#define STB_HIOS	12		/*   system specific symbol bindings */
#define STB_LOPROC	13		/* reserved range for processor */
#define STB_HIPROC	15		/*  specific symbol bindings */

/* Symbol type - ELF32_ST_TYPE - st_info */
#define STT_NOTYPE	0		/* not specified */
#define STT_OBJECT	1		/* data object */
#define STT_FUNC	2		/* function */
#define STT_SECTION	3		/* section */
#define STT_FILE	4		/* file */
#define STT_NUM		5		/* number of symbol types */
#define STT_TLS		6		/* Thread local storage symbol */
#define STT_LOOS	10		/* reserved range for operating */
#define STT_HIOS	12		/*  system specific symbol types */
#define STT_LOPROC	13		/* reserved range for processor */
#define STT_HIPROC	15		/*  specific symbol types */

/* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
#define STV_DEFAULT	0		/* Normal visibility rules */
#define STV_INTERNAL	1		/* Processor specific hidden class */
#define STV_HIDDEN	2		/* Symbol unavailable in other mods */
#define STV_PROTECTED	3		/* Not preemptible, not exported */


/* Relocation entry with implicit addend */
typedef struct
{
	Elf32_Addr	r_offset;	/* offset of relocation */
	Elf32_Word	r_info;		/* symbol table index and type */
} Elf32_Rel;

/* Relocation entry with explicit addend */
typedef struct
{
	Elf32_Addr	r_offset;	/* offset of relocation */
	Elf32_Word	r_info;		/* symbol table index and type */
	Elf32_Sword	r_addend;
} Elf32_Rela;

/* Extract relocation info - r_info */
#define ELF32_R_SYM(i)		((i) >> 8)
#define ELF32_R_TYPE(i)		((unsigned char) (i))
#define ELF32_R_INFO(s,t) 	(((s) << 8) + (unsigned char)(t))

/* Program Header */
typedef struct {
	Elf32_Word	p_type;		/* segment type */
	Elf32_Off	p_offset;	/* segment offset */
	Elf32_Addr	p_vaddr;	/* virtual address of segment */
	Elf32_Addr	p_paddr;	/* physical address - ignored? */
	Elf32_Word	p_filesz;	/* number of bytes in file for seg. */
	Elf32_Word	p_memsz;	/* number of bytes in mem. for seg. */
	Elf32_Word	p_flags;	/* flags */
	Elf32_Word	p_align;	/* memory alignment */
} Elf32_Phdr;

/* Segment types - p_type */
#define PT_NULL		0		/* unused */
#define PT_LOAD		1		/* loadable segment */
#define PT_DYNAMIC	2		/* dynamic linking section */
#define PT_INTERP	3		/* the RTLD */
#define PT_NOTE		4		/* auxiliary information */
#define PT_SHLIB	5		/* reserved - purpose undefined */
#define PT_PHDR		6		/* program header */
#define PT_TLS		7		/* Thread local storage template */
#define PT_NUM		8		/* Number of segment types */
#define PT_LOOS		0x60000000	/* reserved range for operating */
#define PT_HIOS		0x6fffffff	/*   system specific segment types */
#define PT_LOPROC	0x70000000	/* reserved range for processor */
#define PT_HIPROC	0x7fffffff	/*  specific segment types */

/* Segment flags - p_flags */
#define PF_X		0x1		/* Executable */
#define PF_W		0x2		/* Writable */
#define PF_R		0x4		/* Readable */
#define PF_MASKOS	0x0ff00000	/* OS specific segment flags */
#define PF_MASKPROC	0xf0000000	/* reserved bits for processor */
					/*  specific segment flags */
/* Dynamic structure */
typedef struct
{
	Elf32_Sword	d_tag;		/* controls meaning of d_val */
	union
	{
		Elf32_Word	d_val;	/* Multiple meanings - see d_tag */
		Elf32_Addr	d_ptr;	/* program virtual address */
	} d_un;
} Elf32_Dyn;

extern Elf32_Dyn	_DYNAMIC[];

/* Dynamic Array Tags - d_tag */
#define DT_NULL		0		/* marks end of _DYNAMIC array */
#define DT_NEEDED	1		/* string table offset of needed lib */
#define DT_PLTRELSZ	2		/* size of relocation entries in PLT */
#define DT_PLTGOT	3		/* address PLT/GOT */
#define DT_HASH		4		/* address of symbol hash table */
#define DT_STRTAB	5		/* address of string table */
#define DT_SYMTAB	6		/* address of symbol table */
#define DT_RELA		7		/* address of relocation table */
#define DT_RELASZ	8		/* size of relocation table */
#define DT_RELAENT	9		/* size of relocation entry */
#define DT_STRSZ	10		/* size of string table */
#define DT_SYMENT	11		/* size of symbol table entry */
#define DT_INIT		12		/* address of initialization func. */
#define DT_FINI		13		/* address of termination function */
#define DT_SONAME	14		/* string table offset of shared obj */
#define DT_RPATH	15		/* string table offset of library
					   search path */
#define DT_SYMBOLIC	16		/* start sym search in shared obj. */
#define DT_REL		17		/* address of rel. tbl. w addends */
#define DT_RELSZ	18		/* size of DT_REL relocation table */
#define DT_RELENT	19		/* size of DT_REL relocation entry */
#define DT_PLTREL	20		/* PLT referenced relocation entry */
#define DT_DEBUG	21		/* bugger */
#define DT_TEXTREL	22		/* Allow rel. mod. to unwritable seg */
#define DT_JMPREL	23		/* add. of PLT's relocation entries */
#define DT_BIND_NOW	24		/* Process relocations of object */
#define DT_INIT_ARRAY	25		/* Array with addresses of init fct */
#define DT_FINI_ARRAY	26		/* Array with addresses of fini fct */
#define DT_INIT_ARRAYSZ	27		/* Size in bytes of DT_INIT_ARRAY */
#define DT_FINI_ARRAYSZ	28		/* Size in bytes of DT_FINI_ARRAY */
#define DT_RUNPATH	29		/* Library search path */
#define DT_FLAGS	30		/* Flags for the object being loaded */
#define DT_ENCODING	32		/* Start of encoded range */
#define DT_PREINIT_ARRAY 32		/* Array with addresses of preinit fct*/
#define DT_PREINIT_ARRAYSZ 33		/* size in bytes of DT_PREINIT_ARRAY */
#define DT_NUM		34		/* Number used. */
#define DT_LOOS		0x60000000	/* reserved range for OS */
#define DT_HIOS		0x6fffffff	/*   specific dynamic array tags */
#define DT_LOPROC	0x70000000	/* reserved range for processor */
#define DT_HIPROC	0x7fffffff	/*  specific dynamic array tags */

/* Dynamic Tag Flags - d_un.d_val */
#define DF_ORIGIN	0x01		/* Object may use DF_ORIGIN */
#define DF_SYMBOLIC	0x02		/* Symbol resolutions starts here */
#define DF_TEXTREL	0x04		/* Object contains text relocations */
#define DF_BIND_NOW	0x08		/* No lazy binding for this object */
#define DF_STATIC_TLS	0x10		/* Static thread local storage */

/* Standard ELF hashing function */
unsigned long elf_hash(const unsigned char *name);

#define ELF_TARG_VER	1	/* The ver for which this code is intended */

/*
 * XXX - PowerPC defines really don't belong in here,
 * but we'll put them in for simplicity.
 */

/* Values for Elf32/64_Ehdr.e_flags.  */
#define EF_PPC_EMB              0x80000000      /* PowerPC embedded flag */

/* Cygnus local bits below */
#define EF_PPC_RELOCATABLE      0x00010000      /* PowerPC -mrelocatable flag*/
#define EF_PPC_RELOCATABLE_LIB  0x00008000      /* PowerPC -mrelocatable-lib
						   flag */

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE              0
#define R_PPC_ADDR32            1       /* 32bit absolute address */
#define R_PPC_ADDR24            2       /* 26bit address, 2 bits ignored.  */
#define R_PPC_ADDR16            3       /* 16bit absolute address */
#define R_PPC_ADDR16_LO         4       /* lower 16bit of absolute address */
#define R_PPC_ADDR16_HI         5       /* high 16bit of absolute address */
#define R_PPC_ADDR16_HA         6       /* adjusted high 16bit */
#define R_PPC_ADDR14            7       /* 16bit address, 2 bits ignored */
#define R_PPC_ADDR14_BRTAKEN    8
#define R_PPC_ADDR14_BRNTAKEN   9
#define R_PPC_REL24             10      /* PC relative 26 bit */
#define R_PPC_REL14             11      /* PC relative 16 bit */
#define R_PPC_REL14_BRTAKEN     12
#define R_PPC_REL14_BRNTAKEN    13
#define R_PPC_GOT16             14
#define R_PPC_GOT16_LO          15
#define R_PPC_GOT16_HI          16
#define R_PPC_GOT16_HA          17
#define R_PPC_PLTREL24          18
#define R_PPC_COPY              19
#define R_PPC_GLOB_DAT          20
#define R_PPC_JMP_SLOT          21
#define R_PPC_RELATIVE          22
#define R_PPC_LOCAL24PC         23
#define R_PPC_UADDR32           24
#define R_PPC_UADDR16           25
#define R_PPC_REL32             26
#define R_PPC_PLT32             27
#define R_PPC_PLTREL32          28
#define R_PPC_PLT16_LO          29
#define R_PPC_PLT16_HI          30
#define R_PPC_PLT16_HA          31
#define R_PPC_SDAREL16          32
#define R_PPC_SECTOFF           33
#define R_PPC_SECTOFF_LO        34
#define R_PPC_SECTOFF_HI        35
#define R_PPC_SECTOFF_HA        36
/* Keep this the last entry.  */
#define R_PPC_NUM               37

/* The remaining relocs are from the Embedded ELF ABI, and are not
   in the SVR4 ELF ABI.  */
#define R_PPC_EMB_NADDR32       101
#define R_PPC_EMB_NADDR16       102
#define R_PPC_EMB_NADDR16_LO    103
#define R_PPC_EMB_NADDR16_HI    104
#define R_PPC_EMB_NADDR16_HA    105
#define R_PPC_EMB_SDAI16        106
#define R_PPC_EMB_SDA2I16       107
#define R_PPC_EMB_SDA2REL       108
#define R_PPC_EMB_SDA21         109     /* 16 bit offset in SDA */
#define R_PPC_EMB_MRKREF        110
#define R_PPC_EMB_RELSEC16      111
#define R_PPC_EMB_RELST_LO      112
#define R_PPC_EMB_RELST_HI      113
#define R_PPC_EMB_RELST_HA      114
#define R_PPC_EMB_BIT_FLD       115
#define R_PPC_EMB_RELSDA        116     /* 16 bit relative offset in SDA */

/* Diab tool relocations.  */
#define R_PPC_DIAB_SDA21_LO     180     /* like EMB_SDA21, but lower 16 bit */
#define R_PPC_DIAB_SDA21_HI     181     /* like EMB_SDA21, but high 16 bit */
#define R_PPC_DIAB_SDA21_HA     182     /* like EMB_SDA21, adjusted high 16 */
#define R_PPC_DIAB_RELSDA_LO    183     /* like EMB_RELSDA, but lower 16 bit */
#define R_PPC_DIAB_RELSDA_HI    184     /* like EMB_RELSDA, but high 16 bit */
#define R_PPC_DIAB_RELSDA_HA    185     /* like EMB_RELSDA, adjusted high 16 */

/* This is a phony reloc to handle any old fashioned TOC16 references
   that may still be in object files.  */
#define R_PPC_TOC16             255

#endif /* _ELF_H */