dynix3.h
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/* a.out specifics for Sequent Symmetry running Dynix 3.x
Copyright 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef A_OUT_DYNIX3_H
#define A_OUT_DYNIX3_H
#define external_exec dynix_external_exec
/* struct exec for Dynix 3
a_gdtbl and a_bootstrap are only for standalone binaries.
Shared data fields are not supported by the kernel as of Dynix 3.1,
but are supported by Dynix compiler programs. */
struct dynix_external_exec
{
unsigned char e_info[4];
unsigned char e_text[4];
unsigned char e_data[4];
unsigned char e_bss[4];
unsigned char e_syms[4];
unsigned char e_entry[4];
unsigned char e_trsize[4];
unsigned char e_drsize[4];
unsigned char e_g_code[8];
unsigned char e_g_data[8];
unsigned char e_g_desc[8];
unsigned char e_shdata[4];
unsigned char e_shbss[4];
unsigned char e_shdrsize[4];
unsigned char e_bootstrap[44];
unsigned char e_reserved[12];
unsigned char e_version[4];
};
#define EXEC_BYTES_SIZE (128)
/* All executables under Dynix are demand paged with read-only text,
Thus no NMAGIC.
ZMAGIC has a page of 0s at virtual 0,
XMAGIC has an invalid page at virtual 0. */
#define OMAGIC 0x12eb /* .o */
#define ZMAGIC 0x22eb /* zero @ 0, demand load */
#define XMAGIC 0x32eb /* invalid @ 0, demand load */
#define SMAGIC 0x42eb /* standalone, not supported here */
#define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
(ZMAGIC != N_MAGIC(x)) && \
(XMAGIC != N_MAGIC(x)) && \
(SMAGIC != N_MAGIC(x)))
#define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
#define N_TXTOFF(x) (EXEC_BYTES_SIZE)
#define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
#define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
#define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
#define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
#define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
#define N_TXTADDR(x) \
(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
: TEXT_START_ADDR + EXEC_BYTES_SIZE)
#define N_TXTSIZE(x) \
(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
: ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
#endif /* A_OUT_DYNIX3_H */