87 lines
3.0 KiB
C
87 lines
3.0 KiB
C
/* a.out specifics for Sequent Symmetry running Dynix 3.x
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Copyright 2001 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef A_OUT_DYNIX3_H
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#define A_OUT_DYNIX3_H
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#define external_exec dynix_external_exec
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/* struct exec for Dynix 3
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a_gdtbl and a_bootstrap are only for standalone binaries.
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Shared data fields are not supported by the kernel as of Dynix 3.1,
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but are supported by Dynix compiler programs. */
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struct dynix_external_exec
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{
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unsigned char e_info[4];
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unsigned char e_text[4];
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unsigned char e_data[4];
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unsigned char e_bss[4];
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unsigned char e_syms[4];
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unsigned char e_entry[4];
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unsigned char e_trsize[4];
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unsigned char e_drsize[4];
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unsigned char e_g_code[8];
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unsigned char e_g_data[8];
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unsigned char e_g_desc[8];
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unsigned char e_shdata[4];
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unsigned char e_shbss[4];
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unsigned char e_shdrsize[4];
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unsigned char e_bootstrap[44];
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unsigned char e_reserved[12];
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unsigned char e_version[4];
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};
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#define EXEC_BYTES_SIZE (128)
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/* All executables under Dynix are demand paged with read-only text,
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Thus no NMAGIC.
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ZMAGIC has a page of 0s at virtual 0,
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XMAGIC has an invalid page at virtual 0. */
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#define OMAGIC 0x12eb /* .o */
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#define ZMAGIC 0x22eb /* zero @ 0, demand load */
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#define XMAGIC 0x32eb /* invalid @ 0, demand load */
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#define SMAGIC 0x42eb /* standalone, not supported here */
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#define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
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(ZMAGIC != N_MAGIC(x)) && \
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(XMAGIC != N_MAGIC(x)) && \
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(SMAGIC != N_MAGIC(x)))
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#define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
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#define N_TXTOFF(x) (EXEC_BYTES_SIZE)
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#define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
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#define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
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#define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
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#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
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#define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
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#define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
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#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
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#define N_TXTADDR(x) \
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(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
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: TEXT_START_ADDR + EXEC_BYTES_SIZE)
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#define N_TXTSIZE(x) \
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(((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
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: ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
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#endif /* A_OUT_DYNIX3_H */
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