1 /* a.out specifics for Sequent Symmetry running Dynix 3.x 2 3 Copyright 2001 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19 #ifndef A_OUT_DYNIX3_H 20 #define A_OUT_DYNIX3_H 21 22 #define external_exec dynix_external_exec 23 24 /* struct exec for Dynix 3 25 26 a_gdtbl and a_bootstrap are only for standalone binaries. 27 Shared data fields are not supported by the kernel as of Dynix 3.1, 28 but are supported by Dynix compiler programs. */ 29 struct dynix_external_exec 30 { 31 unsigned char e_info[4]; 32 unsigned char e_text[4]; 33 unsigned char e_data[4]; 34 unsigned char e_bss[4]; 35 unsigned char e_syms[4]; 36 unsigned char e_entry[4]; 37 unsigned char e_trsize[4]; 38 unsigned char e_drsize[4]; 39 unsigned char e_g_code[8]; 40 unsigned char e_g_data[8]; 41 unsigned char e_g_desc[8]; 42 unsigned char e_shdata[4]; 43 unsigned char e_shbss[4]; 44 unsigned char e_shdrsize[4]; 45 unsigned char e_bootstrap[44]; 46 unsigned char e_reserved[12]; 47 unsigned char e_version[4]; 48 }; 49 50 #define EXEC_BYTES_SIZE (128) 51 52 /* All executables under Dynix are demand paged with read-only text, 53 Thus no NMAGIC. 54 55 ZMAGIC has a page of 0s at virtual 0, 56 XMAGIC has an invalid page at virtual 0. */ 57 #define OMAGIC 0x12eb /* .o */ 58 #define ZMAGIC 0x22eb /* zero @ 0, demand load */ 59 #define XMAGIC 0x32eb /* invalid @ 0, demand load */ 60 #define SMAGIC 0x42eb /* standalone, not supported here */ 61 62 #define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \ 63 (ZMAGIC != N_MAGIC(x)) && \ 64 (XMAGIC != N_MAGIC(x)) && \ 65 (SMAGIC != N_MAGIC(x))) 66 67 #define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0) 68 69 #define N_TXTOFF(x) (EXEC_BYTES_SIZE) 70 #define N_DATOFF(x) (N_TXTOFF(x) + N_TXTSIZE(x)) 71 #define N_SHDATOFF(x) (N_DATOFF(x) + (x).a_data) 72 #define N_TRELOFF(x) (N_SHDATOFF(x) + (x).a_shdata) 73 #define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) 74 #define N_SHDRELOFF(x) (N_DRELOFF(x) + (x).a_drsize) 75 #define N_SYMOFF(x) (N_SHDRELOFF(x) + (x).a_shdrsize) 76 #define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) 77 78 #define N_TXTADDR(x) \ 79 (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \ 80 : TEXT_START_ADDR + EXEC_BYTES_SIZE) 81 82 #define N_TXTSIZE(x) \ 83 (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? ((x).a_text) \ 84 : ((x).a_text - N_ADDRADJ(x) - EXEC_BYTES_SIZE)) 85 86 #endif /* A_OUT_DYNIX3_H */ 87