Initial revision

1 files changed, 213 insertions, 0 deletions

diff --git a/src/m/mips.h b/src/m/mips.h
new file mode 100644
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+/* machine description file for Mips machines.
+   Copyright (C) 1987, 1990 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 1, or (at your option)
+any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* The following line tells the configuration script what sort of 
+   operating system this machine is likely to run.
+   USUAL-OPSYS="note"
+
+NOTE-START
+Use -opsystem=usg5-2-2 normally, or -opsystem=bsd4-3 with the BSD
+world.
+NOTE-END  */
+
+/* The following three symbols give information on
+ the size of various data types.  */
+
+#define SHORTBITS 16		/* Number of bits in a short */
+
+#define INTBITS 32		/* Number of bits in an int */
+
+#define LONGBITS 32		/* Number of bits in a long */
+
+/* Define BIG_ENDIAN iff lowest-numbered byte in a word
+   is the most significant byte.  */
+
+#define BIG_ENDIAN
+
+/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
+ * group of arguments and treat it as an array of the arguments.  */
+
+#define NO_ARG_ARRAY
+
+/* Define WORD_MACHINE if addresses and such have
+ * to be corrected before they can be used as byte counts.  */
+
+#undef WORD_MACHINE
+
+/* Define how to take a char and sign-extend into an int.
+   On machines where char is signed, this is a no-op.  */
+
+#define SIGN_EXTEND_CHAR(c) ((signed char)(c))
+
+/* Now define a symbol for the cpu type, if your compiler
+   does not define it automatically:
+   Ones defined so far include vax, m68000, ns16000, pyramid,
+   orion, tahoe, APOLLO and many others */
+#ifndef mips
+#	define mips
+#endif
+
+/* Use type int rather than a union, to represent Lisp_Object */
+/* This is desirable for most machines.  */
+
+#define NO_UNION_TYPE
+
+/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
+   the 24-bit bit field into an int.  In other words, if bit fields
+   are always unsigned.
+
+   If you use NO_UNION_TYPE, this flag does not matter.  */
+
+#define EXPLICIT_SIGN_EXTEND
+
+/* Data type of load average, as read out of kmem.  */
+
+#define LOAD_AVE_TYPE long
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
+
+/* Define CANNOT_DUMP on machines where unexec does not work.
+   Then the function dump-emacs will not be defined
+   and temacs will do (load "loadup") automatically unless told otherwise.  */
+
+#undef CANNOT_DUMP
+
+/* Define VIRT_ADDR_VARIES if the virtual addresses of
+   pure and impure space as loaded can vary, and even their
+   relative order cannot be relied on.
+
+   Otherwise Emacs assumes that text space precedes data space,
+   numerically.  */
+
+/* #define VIRT_ADDR_VARIES */
+
+/* Define C_ALLOCA if this machine does not support a true alloca
+   and the one written in C should be used instead.
+   Define HAVE_ALLOCA to say that the system provides a properly
+   working alloca function and it should be used.
+   Define neither one if an assembler-language alloca
+   in the file alloca.s should be used.  */
+
+#define C_ALLOCA
+/* #define HAVE_ALLOCA */
+
+/* Define NO_REMAP if memory segmentation makes it not work well
+   to change the boundary between the text section and data section
+   when Emacs is dumped.  If you define this, the preloaded Lisp
+   code will not be sharable; but that's better than failing completely.  */
+
+#define NO_REMAP
+
+/* This machine requires completely different unexec code
+   which lives in a separate file.  Specify the file name.  */
+
+#define UNEXEC unexmips.o
+
+/* Describe layout of the address space in an executing process.  */
+
+#define TEXT_START 0x400000
+#define DATA_START 0x800000
+
+/* Alter some of the options used when linking.  */
+
+#ifdef BSD
+
+/* Supposedly the dec machine doesn't have this library.
+   #define LIBS_MACHINE -lmld  */
+
+#define LD_SWITCH_MACHINE -D 800000
+#define LIBS_DEBUG
+
+#else
+
+#define LIBS_MACHINE -lmld
+#define LD_SWITCH_MACHINE -D 800000 -g3
+#define START_FILES pre-crt0.o /usr/lib/crt1.o
+#define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
+#define LIBS_TERMCAP -lcurses
+
+#define C_SWITCH_SYSTEM -I/usr/include/bsd
+#define C_DEBUG_SWITCH -O -g3
+
+#if defined(HAVE_X_WINDOWS) && defined(HAVE_X11)
+#define HAVE_VFORK		/* Graciously provided by libX.a */
+#endif
+#endif
+
+/* The standard definitions of these macros would work ok,
+   but these are faster because the constants are short.  */
+
+#define XUINT(a) (((unsigned)(a) << INTBITS-VALBITS) >> INTBITS-VALBITS)
+
+#define XSET(var, type, ptr) \
+   ((var) = ((int)(type) << VALBITS) + (((unsigned) (ptr) << INTBITS-VALBITS) >> INTBITS-VALBITS))
+
+#define XSETINT(a, b)  XSET(a, XTYPE(a), b)
+#define XSETUINT(a, b) XSET(a, XTYPE(a), b)
+#define XSETPNTR(a, b) XSET(a, XTYPE(a), b)
+
+#define XUNMARK(a) ((a) = (((unsigned)(a) << INTBITS-GCTYPEBITS-VALBITS) >> INTBITS-GCTYPEBITS-VALBITS))
+#ifdef USG
+
+/* Cancel certain parts of standard sysV support.  */
+#undef NONSYSTEM_DIR_LIBRARY
+#define SYSV_SYSTEM_DIR
+#undef static
+
+/* Don't try to use SIGIO or FIONREAD even though they are defined.  */
+#undef SIGIO
+#define BROKEN_FIONREAD
+
+/* Describe special kernel features.  */
+
+#define HAVE_SYSVIPC
+
+#define HAVE_TIMEVAL
+#if defined(emacs)
+#include <bsd/sys/time.h>
+#endif
+
+/* #define HAVE_SELECT
+   The `select' in the system won't work for pipes,
+   so don't use it.  */
+
+#define HAVE_DUP2
+#define HAVE_GETWD
+#define HAVE_GETTIMEOFDAY
+
+#define HAVE_PTYS
+#define HAVE_SOCKETS
+
+#undef NOMULTIPLEJOBS
+#define utimes utime  /* Someone should check this.  */
+
+/* ??? */
+#define IRIS
+
+#endif
+
+#ifdef BSD
+#define COFF
+#define TERMINFO
+#undef MAIL_USE_FLOCK  /* Someone should check this.  */
+#undef HAVE_UNION_WAIT
+#endif /* BSD */