1/* m- file for Mips machines. 2 Copyright (C) 1987, 1992, 1999, 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="note" 26 27NOTE-START 28Use mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world. 29Note that the proper m file for the Decstation is pmax.h. 30NOTE-END */ 31 32/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word 33 is the most significant byte. */ 34 35#if ! (defined (__MIPSEL__) || defined (MIPSEL) || defined (_MIPSEL)) 36#define WORDS_BIG_ENDIAN 37#endif 38 39/* Define NO_ARG_ARRAY if you cannot take the address of the first of a 40 * group of arguments and treat it as an array of the arguments. */ 41 42#define NO_ARG_ARRAY 43 44/* Define WORD_MACHINE if addresses and such have 45 * to be corrected before they can be used as byte counts. */ 46 47#undef WORD_MACHINE 48 49/* Define how to take a char and sign-extend into an int. 50 On machines where char is signed, this is a no-op. */ 51 52#define SIGN_EXTEND_CHAR(c) ((signed char)(c)) 53 54/* Now define a symbol for the cpu type, if your compiler 55 does not define it automatically: 56 Ones defined so far include vax, m68000, ns16000, pyramid, 57 orion, tahoe, APOLLO and many others */ 58#ifndef mips 59# define mips 60#endif 61 62/* Use type int rather than a union, to represent Lisp_Object */ 63/* This is desirable for most machines. */ 64 65#define NO_UNION_TYPE 66 67/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend 68 the 24-bit bit field into an int. In other words, if bit fields 69 are always unsigned. 70 71 If you use NO_UNION_TYPE, this flag does not matter. */ 72 73#define EXPLICIT_SIGN_EXTEND 74 75/* Data type of load average, as read out of kmem. */ 76 77#define LOAD_AVE_TYPE long 78 79/* Convert that into an integer that is 100 for a load average of 1.0 */ 80 81#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0) 82 83/* CDC EP/IX 1.4.3 uses /unix */ 84 85#ifndef __linux__ 86#undef KERNEL_FILE 87#define KERNEL_FILE "/unix" 88#endif /* not __linux__ */ 89 90/* Define CANNOT_DUMP on machines where unexec does not work. 91 Then the function dump-emacs will not be defined 92 and temacs will do (load "loadup") automatically unless told otherwise. */ 93 94#undef CANNOT_DUMP 95 96/* Define VIRT_ADDR_VARIES if the virtual addresses of 97 pure and impure space as loaded can vary, and even their 98 relative order cannot be relied on. 99 100 Otherwise Emacs assumes that text space precedes data space, 101 numerically. */ 102 103/* #define VIRT_ADDR_VARIES */ 104 105/* Define NO_REMAP if memory segmentation makes it not work well 106 to change the boundary between the text section and data section 107 when Emacs is dumped. If you define this, the preloaded Lisp 108 code will not be sharable; but that's better than failing completely. */ 109 110#define NO_REMAP 111 112/* This machine requires completely different unexec code 113 which lives in a separate file. Specify the file name. */ 114 115#if !defined(__linux__) && !defined(__NetBSD__) 116#undef UNEXEC 117#define UNEXEC unexmips.o 118#endif /* not __linux__ && not __NetBSD__ */ 119 120/* Describe layout of the address space in an executing process. */ 121 122#ifdef __linux__ 123#define TEXT_START 0x00400000 124#define DATA_START 0x10000000 125#define DATA_SEG_BITS 0x10000000 126#else /* not __linux__ */ 127#define TEXT_START 0x400000 128#define DATA_START 0x800000 129#endif /* __linux__ */ 130 131/* Alter some of the options used when linking. */ 132 133#if !defined(NEWSOS5) && !defined(__linux__) 134#ifdef BSD_SYSTEM 135 136/* DECstations don't have this library. 137 #define LIBS_MACHINE -lmld */ 138 139#define LD_SWITCH_MACHINE -D 800000 140#define LIBS_DEBUG 141 142#if defined (__NetBSD__) || defined (__OpenBSD__) 143#else /* bsd with elf */ 144#define LINKER /bsd43/bin/ld 145 146#define LD_SWITCH_MACHINE -D 800000 -g3 147#define START_FILES pre-crt0.o /usr/lib/crt1.o 148#define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o 149#define LIBS_TERMCAP -lcurses 150 151#define C_SWITCH_MACHINE -I/usr/include/bsd 152#define C_DEBUG_SWITCH -O -g3 153 154#endif /* bsd with elf */ 155#else /* not BSD_SYSTEM */ 156 157#if defined(__GNUC__) && defined(_ABIN32) 158#define LIBS_MACHINE 159#else 160#define LIBS_MACHINE -lmld 161#endif 162 163#endif /* not BSD_SYSTEM */ 164#endif /* not NEWSOS5 && not __linux__ */ 165 166/* The standard definitions of these macros would work ok, 167 but these are faster because the constants are short. */ 168 169#define XUINT(a) (((unsigned)(a) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS)) 170 171#define XSET(var, type, ptr) \ 172 ((var) = \ 173 ((int)(type) << VALBITS) \ 174 + (((unsigned) (ptr) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS))) 175 176#if !defined (NEWSOS5) && !defined (__linux__) 177#ifdef USG 178 179/* Cancel certain parts of standard sysV support. */ 180#undef NONSYSTEM_DIR_LIBRARY 181#define SYSV_SYSTEM_DIR 182#undef static 183 184/* Don't try to use SIGIO or FIONREAD even though they are defined. */ 185#define BROKEN_SIGIO 186#define BROKEN_FIONREAD 187 188/* Describe special kernel features. */ 189 190#define HAVE_SYSVIPC 191 192#if defined(emacs) && !defined(INHIBIT_BSD_TIME) 193#include <bsd/sys/time.h> 194#endif 195 196/* The `select' in the system won't work for pipes, so don't use it. */ 197#undef HAVE_SELECT /* override configuration decision */ 198 199#define HAVE_PTYS 200#define HAVE_SOCKETS 201 202#undef NOMULTIPLEJOBS 203 204/* ??? */ 205#define IRIS 206 207#endif /* USG */ 208 209#ifdef BSD_SYSTEM 210#define COFF 211#define TERMINFO 212#undef MAIL_USE_FLOCK /* Someone should check this. */ 213#undef HAVE_UNION_WAIT 214#endif /* BSD_SYSTEM */ 215 216#endif /* not NEWSOS5 && not __linux__ */ 217 218/* arch-tag: 8fd020ee-78a7-4d87-96ce-6129f52f7bee 219 (do not change this comment) */ 220