home *** CD-ROM | disk | FTP | other *** search
- /* m- file for Iris-4D machines. Use with s-irix3-3.h.
- Copyright (C) 1987 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 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
-
- #ifndef IRIS_4D
- #define IRIS_4D
- #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 /* This doesn't quite work on the 4D */
-
- /* Convert that into an integer that is 100 for a load average of 1.0 */
-
- #define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
-
- #undef KERNEL_FILE
- #define KERNEL_FILE "/unix"
-
- /* 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
-
- #define TEXT_START 0x400000
-
- /*
- * DATA_SEG_BITS forces that bit to be or'd in with any pointers which
- * are trying to access pure strings (as gnu-emacs only allows 24 bits
- * for the value field of a LISP_OBJECT).
- */
-
- #define DATA_START 0x10000000
- #define DATA_SEG_BITS 0x10000000
-
- #undef LIBS_MACHINE
- /* -lsun in case using Yellow Pages for passwords. */
- #define LIBS_MACHINE -lsun -lmld
- #define LIBS_DEBUG
-
- /* Define this if you have a fairly recent system,
- in which crt1.o and crt1.n should be used. */
- #define HAVE_CRTN
-
- #ifdef HAVE_CRTN
- /* Must define START-FILES so that the linker can find /usr/lib/crt0.o. */
- #define START_FILES pre-crt0.o /usr/lib/crt1.o
- #define LIB_STANDARD -lbsd -lc /usr/lib/crtn.o
- #else
- #define START_FILES pre-crt0.o /usr/lib/crt0.o
- /* The entry-point label (start of text segment) is `start', not `__start'. */
- #define DEFAULT_ENTRY_ADDRESS start
- #define LIB_STANDARD -lbsd -lc
- #endif
-
- /* Use terminfo instead of termcap. */
-
- #define TERMINFO
-
- /* Letter to use in finding device name of first pty,
- if system supports pty's. 'a' means it is /dev/ptya0 */
-
- #undef FIRST_PTY_LETTER
- #define FIRST_PTY_LETTER 'q'
-
- /* Define STACK_DIRECTION for alloca.c */
-
- #define STACK_DIRECTION -1
-
- /* 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 XMARKBIT(a) ((a) < 0)
- #define XSETMARKBIT(a,b) ((a) = ((a) & ~MARKBIT) | ((b) ? MARKBIT : 0))
- #define XUNMARK(a) ((a) = (((unsigned)(a) << (INTBITS-GCTYPEBITS-VALBITS)) >> (INTBITS-GCTYPEBITS-VALBITS)))
-
- #if 0 /* This was a mistake. It is needed only on irix 4.0,
- but s-irix4-0.h already does it. */
- /* Turn off some "helpful" error checks for type mismatches
- that we can't fix without breaking other machines. */
- #define C_SWITCH_MACHINE -cckr
- #endif
-