elf_repl.h

linux下基于c++的处理器仿真平台。具有处理器流水线

#define STT_HIOS	12
#define STT_LOPROC	13
#define STT_HIPROC	15

/*
 * Macros for manipulating st_other
 */
#define ELF32_ST_VISIBILITY(o)	((o)&0x3)
#if __LIBELF64
#define ELF64_ST_VISIBILITY(o)	((o)&0x3)
#endif /* __LIBELF64 */

/*
 * Symbol visibility
 */
#define STV_DEFAULT	0
#define STV_INTERNAL	1
#define STV_HIDDEN	2
#define STV_PROTECTED	3

/*
 * Relocation
 */
typedef struct {
    Elf32_Addr		r_offset;
    Elf32_Word		r_info;
} Elf32_Rel;

typedef struct {
    Elf32_Addr		r_offset;
    Elf32_Word		r_info;
    Elf32_Sword		r_addend;
} Elf32_Rela;

#if __LIBELF64
typedef struct {
    Elf64_Addr		r_offset;
    Elf64_Xword		r_info;
} Elf64_Rel;

typedef struct {
    Elf64_Addr		r_offset;
    Elf64_Xword		r_info;
    Elf64_Sxword	r_addend;
} Elf64_Rela;
#endif /* __LIBELF64 */

/*
 * Macros for manipulating 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))

#if __LIBELF64
#define ELF64_R_SYM(i)		((Elf64_Xword)(i)>>32)
#define ELF64_R_TYPE(i)		((i)&0xffffffffL)
#define ELF64_R_INFO(s,t)	(((Elf64_Xword)(s)<<32)+((t)&0xffffffffL))
#endif /* __LIBELF64 */

/*
 * Note entry header
 */
typedef struct {
    Elf32_Word		n_namesz;	/* name size */
    Elf32_Word		n_descsz;	/* descriptor size */
    Elf32_Word		n_type;		/* descriptor type */
} Elf32_Nhdr;

#if __LIBELF64
/* Solaris and GNU use this layout.  Be compatible. */
/* XXX: Latest ELF specs say it's 64-bit?! */
typedef struct {
    Elf64_Word		n_namesz;	/* name size */
    Elf64_Word		n_descsz;	/* descriptor size */
    Elf64_Word		n_type;		/* descriptor type */
} Elf64_Nhdr;
#endif /* __LIBELF64 */

/*
 * Well-known descriptor types for ET_CORE files
 */
#define NT_PRSTATUS	1
#define NT_PRFPREG	2
#define NT_PRPSINFO	3

/*
 * Program header
 */
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;

#if __LIBELF64
typedef struct {
    Elf64_Word		p_type;
    Elf64_Word		p_flags;
    Elf64_Off		p_offset;
    Elf64_Addr		p_vaddr;
    Elf64_Addr		p_paddr;
    Elf64_Xword		p_filesz;
    Elf64_Xword		p_memsz;
    Elf64_Xword		p_align;
} Elf64_Phdr;
#endif /* __LIBELF64 */

/*
 * p_type
 */
#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_TLS		7
#define PT_NUM		8
#define PT_LOOS		0x60000000
#define PT_HIOS		0x6fffffff
#define PT_LOPROC	0x70000000
#define PT_HIPROC	0x7fffffff

/*
 * p_flags
 */
#define PF_X		0x1
#define PF_W		0x2
#define PF_R		0x4
#define PF_MASKOS	0x0ff00000
#define PF_MASKPROC	0xf0000000

/*
 * Dynamic structure
 */
typedef struct {
    Elf32_Sword		d_tag;
    union {
	Elf32_Word	d_val;
	Elf32_Addr	d_ptr;
    } d_un;
} Elf32_Dyn;

#if __LIBELF64
typedef struct {
    Elf64_Sxword	d_tag;
    union {
	Elf64_Xword	d_val;
	Elf64_Addr	d_ptr;
    } d_un;
} Elf64_Dyn;
#endif /* __LIBELF64 */

/*
 * Dynamic array tags
 */
					/* d_un   exec	 shared */
#define DT_NULL			0	/* ign.   mand.	 mand. */
#define DT_NEEDED		1	/* d_val  opt.	 opt.  */
#define DT_PLTRELSZ		2	/* d_val  opt.	 opt.  */
#define DT_PLTGOT		3	/* d_ptr  opt.	 opt.  */
#define DT_HASH			4	/* d_ptr  mand.	 mand. */
#define DT_STRTAB		5	/* d_ptr  mand.	 mand. */
#define DT_SYMTAB		6	/* d_ptr  mand.	 mand. */
#define DT_RELA			7	/* d_ptr  mand.	 opt.  */
#define DT_RELASZ		8	/* d_val  mand.	 opt.  */
#define DT_RELAENT		9	/* d_val  mand.	 opt.  */
#define DT_STRSZ		10	/* d_val  mand.	 mand. */
#define DT_SYMENT		11	/* d_val  mand.	 mand. */
#define DT_INIT			12	/* d_ptr  opt.	 opt.  */
#define DT_FINI			13	/* d_ptr  opt.	 opt.  */
#define DT_SONAME		14	/* d_val  ign.	 opt.  */
#define DT_RPATH		15	/* d_val  opt.	 ign.  */
#define DT_SYMBOLIC		16	/* ign.   ign.	 opt.  */
#define DT_REL			17	/* d_ptr  mand.	 opt.  */
#define DT_RELSZ		18	/* d_val  mand.	 opt.  */
#define DT_RELENT		19	/* d_val  mand.	 opt.  */
#define DT_PLTREL		20	/* d_val  opt.	 opt.  */
#define DT_DEBUG		21	/* d_ptr  opt.	 ign.  */
#define DT_TEXTREL		22	/* ign.   opt.	 opt.  */
#define DT_JMPREL		23	/* d_ptr  opt.	 opt.  */
#define DT_BIND_NOW		24	/* ign.   opt.	 opt.  */
#define DT_INIT_ARRAY		25	/* d_ptr  opt.	 opt.  */
#define DT_FINI_ARRAY		26	/* d_ptr  opt.	 opt.  */
#define DT_INIT_ARRAYSZ		27	/* d_val  opt.	 opt.  */
#define DT_FINI_ARRAYSZ		28	/* d_val  opt.	 opt.  */
#define DT_RUNPATH		29	/* d_val  opt.	 opt.  */
#define DT_FLAGS		30	/* d_val  opt.	 opt.  */
#define DT_ENCODING		32	/* odd/even encoding rule starts here */
#define DT_PREINIT_ARRAY	32	/* d_ptr  opt.	 ign.  */
#define DT_PREINIT_ARRAYSZ	33	/* d_val  opt.	 ign.  */
#define DT_NUM			34
#define DT_LOOS			0x6000000D
#define DT_HIOS			0x6ffff000
#define DT_LOPROC		0x70000000
#define DT_HIPROC		0x7fffffff

/*
 * DT_FLAGS values
 */
#define DF_ORIGIN	0x1
#define DF_SYMBOLIC	0x2
#define DF_TEXTREL	0x4
#define DF_BIND_NOW	0x8
#define DF_STATIC_TLS	0x10

/*
 * Solaris extensions
 */
#define DT_VALRNGLO	0x6ffffd00
#define DT_CHECKSUM	0x6ffffdf8
#define DT_PLTPADSZ	0x6ffffdf9
#define DT_MOVEENT	0x6ffffdfa
#define DT_MOVESZ	0x6ffffdfb
#define DT_FEATURE_1	0x6ffffdfc
#define DT_POSFLAG_1	0x6ffffdfd
#define DT_SYMINSZ	0x6ffffdfe
#define DT_SYMINENT	0x6ffffdff
#define DT_VALRNGHI	0x6ffffdff

#define DT_ADDRRNGLO	0x6ffffe00
#define DT_CONFIG	0x6ffffefa
#define DT_DEPAUDIT	0x6ffffefb
#define DT_AUDIT	0x6ffffefc
#define DT_PLTPAD	0x6ffffefd
#define DT_MOVETAB	0x6ffffefe
#define DT_SYMINFO	0x6ffffeff
#define DT_ADDRRNGHI	0x6ffffeff

#define DT_RELACOUNT	0x6ffffff9
#define DT_RELCOUNT	0x6ffffffa
#define DT_FLAGS_1	0x6ffffffb
#define DT_VERDEF	0x6ffffffc
#define DT_VERDEFNUM	0x6ffffffd
#define DT_VERNEED	0x6ffffffe
#define DT_VERNEEDNUM	0x6fffffff

#define DT_AUXILIARY	0x7ffffffd
#define DT_USED		0x7ffffffe
#define DT_FILTER	0x7fffffff

/*
 * GNU extensions
 */
#define DT_VERSYM	0x6ffffff0

/*
 * DT_FEATURE_1 values
 */
#define DTF_1_PARINIT	0x1
#define DTF_1_CONFEXP	0x2

/*
 * DT_POSFLAG_1 values
 */
#define DF_P1_LAZYLOAD	0x1
#define DF_P1_GROUPPERM	0x2

/*
 * DT_FLAGS_1 values
 */
#define DF_1_NOW	0x00000001
#define DF_1_GLOBAL	0x00000002
#define DF_1_GROUP	0x00000004
#define DF_1_NODELETE	0x00000008
#define DF_1_LOADFLTR	0x00000010
#define DF_1_INITFIRST	0x00000020
#define DF_1_NOOPEN	0x00000040
#define DF_1_ORIGIN	0x00000080
#define DF_1_DIRECT	0x00000100
#define DF_1_TRANS	0x00000200
#define DF_1_INTERPOSE	0x00000400
#define DF_1_NODEFLIB	0x00000800
#define DF_1_NODUMP	0x00001000
#define DF_1_CONFALT	0x00002000
#define DF_1_ENDFILTEE	0x00004000
#define DF_1_DISPRELDNE	0x00008000
#define DF_1_DISPRELPND	0x00010000

/*
 * Syminfo structure
 */
typedef struct {
    Elf32_Half		si_boundto;
    Elf32_Half		si_flags;
} Elf32_Syminfo;

#if __LIBELF64
typedef struct {
    Elf64_Half		si_boundto;
    Elf64_Half		si_flags;
} Elf64_Syminfo;
#endif /* __LIBELF64 */

/*
 * Syminfo version (stored in unused first entry)
 */
#define SYMINFO_NONE	0
#define SYMINFO_CURRENT	1
#define SYMINFO_NUM	2

/*
 * si_boundto special values
 */
#define SYMINFO_BT_LOWRESERVE	0xff00
#define SYMINFO_BT_PARENT	0xfffe	/* bound to parent */
#define SYMINFO_BT_SELF		0xffff	/* bound to self */

/*
 * si_flags
 */
#define SYMINFO_FLG_DIRECT	0x01	/* bound to an object */
#define SYMINFO_FLG_PASSTHRU	0x02	/* pass-thru symbol */
#define SYMINFO_FLG_COPY	0x04	/* result of a copy relocation */
#define SYMINFO_FLG_LAZYLOAD	0x08	/* bound to lazy-loaded object */

/*
 * Version definitions
 */
typedef struct {
    Elf32_Half		vd_version;
    Elf32_Half		vd_flags;
    Elf32_Half		vd_ndx;
    Elf32_Half		vd_cnt;
    Elf32_Word		vd_hash;
    Elf32_Word		vd_aux;
    Elf32_Word		vd_next;
} Elf32_Verdef;

typedef struct {
    Elf32_Word		vda_name;
    Elf32_Word		vda_next;
} Elf32_Verdaux;

typedef struct {
    Elf32_Half		vn_version;
    Elf32_Half		vn_cnt;
    Elf32_Word		vn_file;
    Elf32_Word		vn_aux;
    Elf32_Word		vn_next;
} Elf32_Verneed;

typedef struct {
    Elf32_Word		vna_hash;
    Elf32_Half		vna_flags;
    Elf32_Half		vna_other;
    Elf32_Word		vna_name;
    Elf32_Word		vna_next;
} Elf32_Vernaux;

typedef Elf32_Half	Elf32_Versym;

#if __LIBELF64

typedef struct {
    Elf64_Half		vd_version;
    Elf64_Half		vd_flags;
    Elf64_Half		vd_ndx;
    Elf64_Half		vd_cnt;
    Elf64_Word		vd_hash;
    Elf64_Word		vd_aux;
    Elf64_Word		vd_next;
} Elf64_Verdef;

typedef struct {
    Elf64_Word		vda_name;
    Elf64_Word		vda_next;
} Elf64_Verdaux;

typedef struct {
    Elf64_Half		vn_version;
    Elf64_Half		vn_cnt;
    Elf64_Word		vn_file;
    Elf64_Word		vn_aux;
    Elf64_Word		vn_next;
} Elf64_Verneed;

typedef struct {
    Elf64_Word		vna_hash;
    Elf64_Half		vna_flags;
    Elf64_Half		vna_other;
    Elf64_Word		vna_name;
    Elf64_Word		vna_next;
} Elf64_Vernaux;

typedef Elf64_Half	Elf64_Versym;

#endif /* __LIBELF64 */

/*
 * vd_version
 */
#define VER_DEF_NONE	0
#define VER_DEF_CURRENT	1
#define VER_DEF_NUM	2

/*
 * vn_version
 */
#define VER_NEED_NONE		0
#define VER_NEED_CURRENT	1
#define VER_NEED_NUM		2

/*
 * vd_flags / vna_flags
 */
#define VER_FLG_BASE	0x1	/* vd_flags only */
#define VER_FLG_WEAK	0x2

/*
 * Elf*_Versym special values
 */
#define VER_NDX_LOCAL	0
#define VER_NDX_GLOBAL	1

/*
 * Move section
 */
#if __LIBELF64

typedef struct {
    Elf32_Lword		m_value;
    Elf32_Word		m_info;
    Elf32_Word		m_poffset;
    Elf32_Half		m_repeat;
    Elf32_Half		m_stride;
} Elf32_Move;

typedef struct {
    Elf64_Lword		m_value;
    Elf64_Xword		m_info;
    Elf64_Xword		m_poffset;
    Elf64_Half		m_repeat;
    Elf64_Half		m_stride;
} Elf64_Move;

#define ELF32_M_SYM(info)	((info)>>8)
#define ELF32_M_SIZE(info)	((unsigned char)(info))
#define ELF32_M_INFO(sym, sz)	(((sym)<<8)+(unsigned char)(sz))

#define ELF64_M_SYM(info)	((Elf64_Xword)(info)>>8)
#define ELF64_M_SIZE(info)	((unsigned char)(info))
#define ELF64_M_INFO(sym, sz)	(((Elf64_Xword)(sym)<<8)+(unsigned char)(sz))

#endif /* __LIBELF64 */

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* _ELF_REPL_H */