1/* machine description file for Convex (all models). 2 Copyright (C) 1987, 1994, 2001, 2002, 2003, 2004, 3 2005, 2006, 2007 Free Software Foundation, Inc. 4 5This file is part of GNU Emacs. 6 7GNU Emacs is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU Emacs is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU Emacs; see the file COPYING. If not, write to 19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22 23/* The following line tells the configuration script what sort of 24 operating system this machine is likely to run. 25 USUAL-OPSYS="bsd4-3" */ 26 27/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word 28 is the most significant byte. */ 29 30#define WORDS_BIG_ENDIAN 31 32/* Define NO_ARG_ARRAY if you cannot take the address of the first of a 33 * group of arguments and treat it as an array of the arguments. 34 * Maybe it would be better to simply correct the code. */ 35 36#define NO_ARG_ARRAY 37 38/* Define WORD_MACHINE if addresses and such have 39 * to be corrected before they can be used as byte counts. */ 40 41/* #define WORD_MACHINE */ 42 43/* Now define a symbol for the cpu type, if your compiler 44 does not define it automatically. */ 45#ifndef convex /* The compiler doesn't always do this. */ 46#define convex 47#endif 48 49/* Use type int rather than a union, to represent Lisp_Object */ 50/* This is desirable for most machines. */ 51 52#define NO_UNION_TYPE 53 54#ifndef __GNUC__ /* David M. Cooke <dcooke@haven.larc.nasa.gov> 55 and Ralph Sobek <Ralph.Sobek@cerfacs.fr> agree 56 must ignore one arg when compiled with convex compiler. */ 57#define CRT0_DUMMIES ignore, 58#else 59#define CRT0_DUMMIES 60#endif 61 62/* crt0.c should define a symbol `start' and do .globl with a dot. */ 63 64#define DOT_GLOBAL_START 65 66/* Data type of load average, as read out of kmem. */ 67 68#define LOAD_AVE_TYPE double 69 70/* Convert that into an integer that is 100 for a load average of 1.0 */ 71 72#define LOAD_AVE_CVT(x) (int) ((x) * 100.0) 73 74/* Define CANNOT_DUMP on machines where unexec does not work. 75 Then the function dump-emacs will not be defined 76 and temacs will do (load "loadup") automatically unless told otherwise. */ 77 78/* #define CANNOT_DUMP */ 79 80/* Define VIRT_ADDR_VARIES if the virtual addresses of 81 pure and impure space as loaded can vary, and even their 82 relative order cannot be relied on. 83 84 Otherwise Emacs assumes that text space precedes data space, 85 numerically. */ 86 87/*#define VIRT_ADDR_VARIES*/ 88 89/* Must use the system's termcap. It does special things. */ 90 91#define LIBS_TERMCAP -ltermcap 92 93/* Define NO_REMAP if memory segmentation makes it not work well 94 to change the boundary between the text section and data section 95 when Emacs is dumped. If you define this, the preloaded Lisp 96 code will not be sharable; but that's better than failing completely. */ 97 98/* #define NO_REMAP */ 99 100/* Addresses on the Convex have the high bit set. */ 101#define DATA_SEG_BITS (1 << (BITS_PER_INT-1)) 102 103/* Right shift is logical shift. 104 And the usual way of handling such machines, which involves 105 copying the number into sign_extend_temp, does not work 106 for reasons as yet unknown. */ 107 108#define XINT(a) sign_extend_lisp_int (a) 109 110/* Convex uses a special version of unexec. */ 111 112#define UNEXEC unexconvex.o 113 114/* you gotta define 'COFF' for post 6.1 unexec. */ 115 116#define COFF 117#define TEXT_START 0x80001000 118 119/* Posix stuff for Convex OS 8.1 and up. */ 120 121#define LD_SWITCH_MACHINE \ 122 -e__start -L /usr/lib \ 123 '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema' 124 125/* Use <dirent.h>. */ 126#define SYSV_SYSTEM_DIR 127 128#ifdef _POSIX_SOURCE 129 130/* These symbols have been undefined to advance the state of the art. */ 131 132#define S_IFMT _S_IFMT 133#define S_IFDIR _S_IFDIR 134 135#define S_IREAD _S_IREAD 136#define S_IWRITE _S_IWRITE 137#define S_IEXEC _S_IEXEC 138 139#endif 140 141/* Ptys may start below ptyp0; call a routine to hunt for where. */ 142 143#undef FIRST_PTY_LETTER 144#define FIRST_PTY_LETTER first_pty_letter() 145 146#if 0 147/* 148 * Force a K&R compilation and libraries with the Convex V 4.0 C compiler 149 */ 150#define C_SWITCH_MACHINE -pcc 151#define LIB_STANDARD -lc_old 152#define LIBS_MACHINE -lC2_old 153#define LD_SWITCH_MACHINE -X -NL -fn -Enoposix -A__iob=___ap\$$iob \ 154 -A_use_libc_sema=___ap\$$use_libc_sema -L /usr/lib 155#endif 156 157/* Avoid error in xrdb.c - d.m.cooke@larc.nasa.gov. */ 158#define DECLARE_GETPWUID_WITH_UID_T 159 160/* Call getpgrp properly. */ 161#define GETPGRP_NO_ARG 162 163/* Tested for both Convex C and GNUC by d.m.cooke@larc.nasa.gov. */ 164#define LIBS_MACHINE -lC2 165 166/* Avoid error in getloadavg.c. */ 167#define NLIST_NAME_UNION 1 168 169#if 0 /* This is supposed to be an improvement. 170 It would be good for people to try enabling this code 171 and report the results. */ 172/* gcc -nostdlib prevents some math symbols from being included. 173 So we have to use -nostartfiles instead. */ 174#define LINKER $(CC) -nostartfiles 175 176#define ORDINARY_LINK 177 178#undef LD_SWITCH_MACHINE 179#define LD_SWITCH_MACHINE \ 180 -L /usr/lib \ 181 '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema' 182#endif 183 184/* There is some indication that the convex has sys/wait.h 185 but it does not work right. */ 186#undef HAVE_SYS_WAIT_H 187 188/* arch-tag: 127e5ae1-4f03-40c0-a87e-d2cb02c59de8 189 (do not change this comment) */ 190