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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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
* or http://www.opensolaris.org/os/licensing.
* 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
*/
/*
* Copyright 1989 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef _sparc_a_out_h
#define _sparc_a_out_h
#include <sys/exec.h>
/*
* memory management parameters
*/
#define PAGSIZ 0x02000
#define SEGSIZ PAGSIZ
#define OLD_PAGSIZ 0x00800 /* Page size under Release 2.0 */
#define OLD_SEGSIZ 0x08000 /* Segment size under Release 2.0 */
/*
* returns 1 if an object file type is invalid, i.e., if the other macros
* defined below will not yield the correct offsets. Note that a file may
* have N_BADMAG(x) = 0 and may be fully linked, but still may not be
* executable.
*/
#define N_BADMAG(x) \
((x).a_magic!=OMAGIC && (x).a_magic!=NMAGIC && (x).a_magic!=ZMAGIC)
/*
* relocation parameters. These are architecture-dependent
* and can be deduced from the machine type. They are used
* to calculate offsets of segments within the object file;
* See N_TXTOFF(x), etc. below.
*/
#define N_PAGSIZ(x) \
((x).a_machtype == M_OLDSUN2? OLD_PAGSIZ : PAGSIZ)
#define N_SEGSIZ(x) \
((x).a_machtype == M_OLDSUN2? OLD_SEGSIZ : SEGSIZ)
/*
* offsets of various sections of an object file.
*/
#define N_TXTOFF(x) \
/* text segment */ \
( (x).a_machtype == M_OLDSUN2 \
? ((x).a_magic==ZMAGIC ? N_PAGSIZ(x) : sizeof (struct exec)) \
: ((x).a_magic==ZMAGIC ? 0 : sizeof (struct exec)) )
#define N_DATOFF(x) /* data segment */ \
(N_TXTOFF(x) + (x).a_text)
#define N_TRELOFF(x) /* text reloc'n */ \
(N_DATOFF(x) + (x).a_data)
#define N_DRELOFF(x) /* data relocation*/ \
(N_TRELOFF(x) + (x).a_trsize)
#define N_SYMOFF(x) \
/* symbol table */ \
(N_TXTOFF(x)+(x).a_text+(x).a_data+(x).a_trsize+(x).a_drsize)
#define N_STROFF(x) \
/* string table */ \
(N_SYMOFF(x) + (x).a_syms)
/*
* Macros which take exec structures as arguments and tell where the
* various pieces will be loaded.
*/
#define _N_BASEADDR(x) \
(((x).a_magic == ZMAGIC) && ((x).a_entry < N_PAGSIZ(x)) ? \
0 : N_PAGSIZ(x))
#define N_TXTADDR(x) \
((x).a_machtype == M_OLDSUN2 ? N_SEGSIZ(x) : _N_BASEADDR(x))
#define N_DATADDR(x) \
(((x).a_magic==OMAGIC)? (N_TXTADDR(x)+(x).a_text) \
: (N_SEGSIZ(x)+((N_TXTADDR(x)+(x).a_text-1) & ~(N_SEGSIZ(x)-1))))
#define N_BSSADDR(x) (N_DATADDR(x)+(x).a_data)
/*
* Format of a relocation datum.
*/
/*
* Sparc relocation types
*/
enum reloc_type
{
RELOC_8, RELOC_16, RELOC_32, /* simplest relocs */
RELOC_DISP8, RELOC_DISP16, RELOC_DISP32, /* Disp's (pc-rel) */
RELOC_WDISP30, RELOC_WDISP22, /* SR word disp's */
RELOC_HI22, RELOC_22, /* SR 22-bit relocs */
RELOC_13, RELOC_LO10, /* SR 13&10-bit relocs*/
RELOC_SFA_BASE, RELOC_SFA_OFF13, /* SR S.F.A. relocs */
RELOC_BASE10, RELOC_BASE13, RELOC_BASE22, /* base_relative pic */
RELOC_PC10, RELOC_PC22, /* special pc-rel pic*/
RELOC_JMP_TBL, /* jmp_tbl_rel in pic */
RELOC_SEGOFF16, /* ShLib offset-in-seg*/
RELOC_GLOB_DAT, RELOC_JMP_SLOT, RELOC_RELATIVE, /* rtld relocs */
};
/*
* Format of a relocation datum.
*/
struct reloc_info_sparc /* used when header.a_machtype == M_SPARC */
{
unsigned long int r_address; /* relocation addr (offset in segment)*/
unsigned int r_index :24; /* segment index or symbol index */
unsigned int r_extern : 1; /* if F, r_index==SEG#; if T, SYM idx */
int : 2; /* <unused> */
enum reloc_type r_type : 5; /* type of relocation to perform */
long int r_addend; /* addend for relocation value */
};
/*
* 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;
unsigned char n_type; /* type flag (N_TEXT,..) */
char n_other; /* unused */
short n_desc; /* see <stab.h> */
unsigned long n_value; /* value of symbol (or sdb offset) */
};
/*
* Simple values for n_type.
*/
#define N_UNDF 0x0 /* undefined */
#define N_ABS 0x2 /* absolute */
#define N_TEXT 0x4 /* text */
#define N_DATA 0x6 /* data */
#define N_BSS 0x8 /* bss */
#define N_COMM 0x12 /* common (internal to ld) */
#define N_FN 0x1e /* file name symbol */
#define N_EXT 01 /* external bit, or'ed in */
#define N_TYPE 0x1e /* mask for all the type bits */
/*
* Dbx entries have some of the N_STAB bits set.
* These are given in <stab.h>
*/
#define N_STAB 0xe0 /* if any of these bits set, a dbx symbol */
/*
* Format for namelist values.
*/
#define N_FORMAT "%08x"
/*
* secondary sections.
* this stuff follows the string table.
* not even its presence or absence is noted in the
* exec header (?). the secondary header gives
* the number of sections. following it is an
* array of "extra_nsects" int's which give the
* sizeof of the individual sections. the presence of
* even the header is optional.
*/
#define EXTRA_MAGIC 1040 /* taxing concept */
#define EXTRA_IDENT 0 /* ident's in 0th extra section */
struct extra_sections {
int extra_magic; /* should be EXTRA_MAGIC */
int extra_nsects; /* number of extra sections */
};
#endif /*!_sparc_a_out_h*/
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