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- /* machine description file for Iris-4D machines. Use with s/irix*.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 2, 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. */
-
- /* Synched up with: FSF 19.29. */
-
- /* Define WORD_MACHINE if addresses and such have
- * to be corrected before they can be used as byte counts. */
-
- #undef WORD_MACHINE
-
- /* 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 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
-
- /* jg@genmagic.genmagic.com (John Giannandrea) says this is unnecessary. */
- #if 0
- /* 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)
-
- /* s-iris3-6.h uses /vmunix */
-
- #undef KERNEL_FILE
- #define KERNEL_FILE "/unix"
- #endif
-
- /* 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 */ /* Sjoerd.Mullender@cwi.nl says no need. */
- /* #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. */
-
- #ifdef USG5_4
- #undef UNEXEC
- #define UNEXEC unexelfsgi.o
- #else
- #define UNEXEC unexmips.o
- #endif
-
- #define TEXT_START 0x400000
-
- /*
- * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
- * were stored in a Lisp_Object (as Emacs uses fewer than 32 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
-
- #ifndef USG5_4
- #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 -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 -lc
- #endif
- #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 */
-
- #undef STACK_DIRECTION
- #define STACK_DIRECTION -1
-
- #ifndef __GNUC__
- /* Turn off some "helpful" error checks for type mismatches
- that we can't fix without breaking other machines. */
- #ifdef IRIX_FORCE_32_BITS
- /* XEmacs change -- cognot@elfgrc.co.uk
- Otherwise cpp defaults to no-ansi and does not understand
- anything about concatenation (##) directives. */
- /* #define C_SWITCH_MACHINE -32 */
- #endif /* IRIX_FORCE_32_BITS */
- #endif /* not __GNUC__ */
-