_a.out.h revision 4870e0a7381ec2ec57437062574e6ddc3dd48d7f
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
*/
#ifndef _A_DOT_OUT_DOT_H
#define _A_DOT_OUT_DOT_H
#include <a.out.h>
#include <_rtld.h>
#ifdef __cplusplus
extern "C" {
#endif
#define max(a, b) ((a) < (b) ? (b) : (a))
typedef struct link_dynamic Link_dynamic;
/*
* Extern functions for a.out format file class.
*/
Rt_map *, int *);
extern void aout_rtbndr(caddr_t);
Rej_desc *);
/*
* Private data for an a.out format file class.
*/
typedef struct _rt_aout_private {
} Rt_aoutp;
/*
* Special defines for a.out format file class.
*/
/*
* Format of a symbol table entry.
*/
struct nlist {
union {
char *n_name; /* for use when in-core */
long n_strx; /* index into file string table */
} n_un;
char n_other; /* unused */
};
/*
* Link editor public definitions.
*/
#ifndef _link_h
#define _link_h
/*
* Structure describing logical name and requirements on an object
* which is to be loaded dynamically.
*/
struct old_link_object {
char *lo_name; /* name of object */
lo_unused : 31;
short lo_major; /* major version number */
short lo_minor; /* minor version number */
};
struct link_object {
long lo_name; /* name (often relative) */
lo_unused : 31;
short lo_major; /* major version number */
short lo_minor; /* minor version number */
long lo_next; /* next one (often relative) */
};
typedef struct link_object Lnk_obj;
/*
* Structure describing name and placement of dynamically loaded
* objects in a process' address space.
*/
typedef struct a_link_map A_link_map;
struct a_link_map {
char *lm_name; /* full name of loaded object */
};
/*
* Version 1 of dynamic linking information. With the exception of
* ld_loaded (determined at execution time) and ld_stab_hash (a special
* case of relocation handled at execution time), the values in this
* structure reflect offsets from the containing link_dynamic structure.
*/
struct link_dynamic_1 {
long ld_need; /* list of needed objects */
long ld_rules; /* search rules for library objects */
long ld_got; /* global offset table */
long ld_plt; /* procedure linkage table */
long ld_rel; /* relocation table */
long ld_hash; /* symbol hash table */
long ld_stab; /* symbol table itself */
long (*ld_stab_hash)(); /* "pointer" to symbol hash function */
long ld_buckets; /* number of hash buckets */
long ld_symbols; /* symbol strings */
long ld_symb_size; /* size of symbol strings */
long ld_text; /* size of text area */
};
struct link_dynamic_2 {
long ld_need; /* list of needed objects */
long ld_rules; /* search rules for library objects */
long ld_got; /* global offset table */
long ld_plt; /* procedure linkage table */
long ld_rel; /* relocation table */
long ld_hash; /* symbol hash table */
long ld_stab; /* symbol table itself */
long (*ld_stab_hash)(); /* "pointer" to symbol hash function */
long ld_buckets; /* number of hash buckets */
long ld_symbols; /* symbol strings */
long ld_symb_size; /* size of symbol strings */
long ld_text; /* size of text area */
long ld_plt_sz; /* size of procedure linkage table */
};
/*
* Structure pointing to run time allocated common symbols and
* its string.
*/
struct rtc_symb {
};
/*
* Debugger interface structure.
*/
struct ld_debug {
int ldd_version; /* version # of interface */
int ldd_in_debugger; /* a debugger is running us */
int ldd_sym_loaded; /* we loaded some symbols */
char *ldd_bp_addr; /* place for ld-generated bpt */
int ldd_bp_inst; /* instruction which was there */
};
/*
* Structure associated with each object which may be or which requires
* execution-time link editing. Used by the run-time linkage editor to
* identify needed objects and symbol definitions and references.
*/
struct old_link_dynamic {
int ld_version; /* version # of this structure */
union {
struct link_dynamic_1 ld_1;
} ld_un;
int in_debugging;
int sym_loaded;
char *bp_addr;
int bp_inst;
/* allocated common symbols. */
};
struct link_dynamic {
int ld_version; /* version # of this structure */
union {
struct link_dynamic_1 *ld_1;
struct link_dynamic_2 *ld_2;
} ld_un;
};
/*
* Get size of relocations.
*/
#endif /* !_link_h */
/*
* Macros for getting to linker a.out format private data.
*/
/*
* Most of the above macros are used from AOUT specific routines, however there
* are a couple of instances where we need to ensure the file being processed
* is AOUT before dereferencing the macro.
*/
/*
* Code collapsing macros.
*/
struct jbind {
};
struct fshash {
int fssymbno; /* ordinal symbol number */
int next; /* index to the hash array pointed by fs_hash */
};
/*
* Sparc relocation types.
*/
enum reloc_type
{
RELOC_JMP_TBL, /* jmp_tbl_rel in pic */
RELOC_SEGOFF16, /* Shlib off-in-seg */
};
/*
* Format of a relocation datum.
*/
#define r_symbolnum r_index
struct relocation_info /* used when header.a_machtype == M_SPARC */
{
int : 2; /* <unused> */
long r_addend; /* addend for relocation value */
};
struct ld_private {
char *lp_symstr; /* symbol strings */
long lp_refcnt; /* reference count of link map */
};
/*
* Offsets of various sections of an object file.
*/
#define PAGSIZ 0x02000
#define N_TXTOFF(x) \
/* text segment */ \
#define N_SYMOFF(x) \
/* symbol table */ \
#define SIZE(x) \
/* round to segment size */ \
#ifdef __cplusplus
}
#endif
#endif /* _A_DOT_OUT_DOT_H */