| 1 | /* a.out specifics for Sequent Symmetry running Dynix 3.x
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| 2 |
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| 3 | Copyright 2001 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2 of the License, or
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| 8 | (at your option) any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 18 |
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| 19 | #ifndef A_OUT_DYNIX3_H
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| 20 | #define A_OUT_DYNIX3_H
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| 21 |
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| 22 | #define external_exec dynix_external_exec
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| 23 |
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| 24 | /* struct exec for Dynix 3
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| 25 |
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| 26 | a_gdtbl and a_bootstrap are only for standalone binaries.
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| 27 | Shared data fields are not supported by the kernel as of Dynix 3.1,
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| 28 | but are supported by Dynix compiler programs. */
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| 29 | struct dynix_external_exec
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| 30 | {
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| 31 | unsigned char e_info[4];
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| 32 | unsigned char e_text[4];
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| 33 | unsigned char e_data[4];
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| 34 | unsigned char e_bss[4];
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| 35 | unsigned char e_syms[4];
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| 36 | unsigned char e_entry[4];
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| 37 | unsigned char e_trsize[4];
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| 38 | unsigned char e_drsize[4];
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| 39 | unsigned char e_g_code[8];
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| 40 | unsigned char e_g_data[8];
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| 41 | unsigned char e_g_desc[8];
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| 42 | unsigned char e_shdata[4];
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| 43 | unsigned char e_shbss[4];
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| 44 | unsigned char e_shdrsize[4];
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| 45 | unsigned char e_bootstrap[44];
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| 46 | unsigned char e_reserved[12];
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| 47 | unsigned char e_version[4];
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| 48 | };
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| 49 |
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| 50 | #define EXEC_BYTES_SIZE (128)
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| 51 |
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| 52 | /* All executables under Dynix are demand paged with read-only text,
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| 53 | Thus no NMAGIC.
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| 54 |
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| 55 | ZMAGIC has a page of 0s at virtual 0,
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| 56 | XMAGIC has an invalid page at virtual 0. */
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| 57 | #define OMAGIC 0x12eb /* .o */
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| 58 | #define ZMAGIC 0x22eb /* zero @ 0, demand load */
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| 59 | #define XMAGIC 0x32eb /* invalid @ 0, demand load */
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| 60 | #define SMAGIC 0x42eb /* standalone, not supported here */
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| 61 |
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| 62 | #define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \
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| 63 | (ZMAGIC != N_MAGIC(x)) && \
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| 64 | (XMAGIC != N_MAGIC(x)) && \
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| 65 | (SMAGIC != N_MAGIC(x)))
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| 66 |
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| 67 | #define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0)
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| 68 |
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| 69 | #define N_TXTOFF(x) (EXEC_BYTES_SIZE)
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| 70 | #define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x))
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| 71 | #define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data)
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| 72 | #define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata)
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| 73 | #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize)
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| 74 | #define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize)
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| 75 | #define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize)
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| 76 | #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms)
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| 77 |
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| 78 | #define N_TXTADDR(x) \
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| 79 | (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \
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| 80 | : TEXT_START_ADDR + EXEC_BYTES_SIZE)
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| 81 |
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| 82 | #define N_TXTSIZE(x) \
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| 83 | (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \
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| 84 | : ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE))
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| 85 |
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| 86 | #endif /* A_OUT_DYNIX3_H */
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