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- /* machine description file For the alpha chip.
- Copyright (C) 1994 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. */
-
- /* Synched up with: FSF 19.29. */
-
- /* 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=osf1
- NOTE-END
-
- */
-
- #define DEC_ALPHA /* Digital Alpha AXP */
-
- /* Define WORD_MACHINE if addresses and such have
- * to be corrected before they can be used as byte counts. */
-
- /* #define WORD_MACHINE */
-
- /* XEmacs addition: is this necessary? */
-
- /* XEmacs: Apparently not Andrew Cohen 8/24/95 */
- /* 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 */
-
- /* __alpha defined automatically */
-
-
- /* Use type EMACS_INT rather than a union, to represent Lisp_Object */
- /* This is desirable for most machines. */
-
- /* XEmacs change: something is not quite right with this defined. */
- /* #define NO_UNION_TYPE */
-
- /* Define the type to use. */
- #define EMACS_INT long
- #define EMACS_UINT unsigned long
- #define SPECIAL_EMACS_INT
-
- /* 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
-
- /* Data type of load average, as read out of kmem. */
- /* Load average requires special crocks. Version 19 has them.
- For now, don't define this. */
-
- #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 / FSCALE)
-
- /* 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. */
-
- /* #define 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 HAVE_ALLOCA
-
- /* GNU malloc and the relocating allocator do not work together
- with X. [Who wrote that?] */
-
- /* May 1995: reportedly [Rainer Schoepf <schoepf@uni-mainz.de>] both the
- system and the gnu malloc system work with "alpha-dec-osf3.0" and
- "alpha-dec-osf3.2". */
-
- /* May 1995: it seems to me [Morten Welinder <terra@diku.dk>] that both
- mallocs work with "alpha-dec-osf2.0", but I daren't break anything
- right now. Feel free to play if you want. */
-
- /* #define SYSTEM_MALLOC */
-
- /* 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 */
-
- /* Some really obscure 4.2-based systems (like Sequent DYNIX)
- * do not support asynchronous I/O (using SIGIO) on sockets,
- * even though it works fine on tty's. If you have one of
- * these systems, define the following, and then use it in
- * config.h (or elsewhere) to decide when (not) to use SIGIO.
- *
- * You'd think this would go in an operating-system description file,
- * but since it only occurs on some, but not all, BSD systems, the
- * reasonable place to select for it is in the machine description
- * file.
- */
-
- /* #define NO_SOCK_SIGIO */
-
-
- #define HAVE_X11R4
- #define HAVE_X11R5
-
-
- /* Describe layout of the address space in an executing process. */
-
- #define TEXT_START 0x120000000
- #define DATA_START 0x140000000
-
- #if 0 /* #### XEmacs: see below */
-
- /* This is necessary for mem-limits.h, so that start_of_data gives
- the correct value */
-
- #define DATA_SEG_BITS 0x140000000
-
- #endif
-
-
- #define ORDINARY_LINK
-
- /* Some systems seem to have this, others don't. */
- #ifdef HAVE_LIBDNET
- #define LIBS_MACHINE -ldnet
- #else
- #define LIBS_MACHINE -ldnet_stub
- #endif
-
- #if 0 /* Rainer Schoepf <schoepf@uni-mainz.de> says this loses with X11R6
- since it has only shared libraries. */
- #ifndef __GNUC__
- /* This apparently is for the system ld as opposed to Gnu ld. */
- #ifdef OSF1
- #define LD_SWITCH_MACHINE -non_shared
- #endif
- #endif
- #endif /* 0 */
-
- #define LIBS_DEBUG
-
- /* XEmacs change: */
- /* A.C. Do NOT include /usr/lib/cmplrs/cc/crt0.o here! */
- #define START_FILES pre-crt0.o
-
-
- /* The program to be used for unexec. */
-
- #define UNEXEC unexalpha.o
-
- #define PNTR_COMPARISON_TYPE unsigned long
-
- #if 1 /* #### XEmacs: I think that XEmacs has not been yet restructured
- to allow this. */
- /* I think that maybe it has Andrew Cohen 08/23/95 */
-
- /* On the 64 bit architecture, we can use 60 bits for addresses */
-
- #define VALBITS 60
-
-
- /* This definition of MARKBIT is necessary because of the comparison of
- ARRAY_MARK_FLAG and MARKBIT in an #if in lisp.h, which cpp doesn't like. */
-
- #define MARKBIT 0x8000000000000000L
-
-
- /* Define XINT and XUINT so that they can take arguments of type int */
-
- #define XINT(a) (((long) (a) << (LONGBITS - VALBITS)) >> (LONGBITS - VALBITS))
- #define XUINT(a) ((long) (a) & VALMASK)
-
- /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
-
- #define XPNTR(a) XUINT (a)
-
- /* Declare malloc and realloc in a way that is clean.
- But not in makefiles! */
-
- #ifndef NOT_C_CODE
- #ifndef THIS_IS_YMAKEFILE
- /* We need these because pointers are larger than the default ints. */
- #include <alloca.h>
-
- #endif /* not THIS_IS_YMAKEFILE */
- #endif /* not NOT_C_CODE */
-
- #endif /* 1 */
-
- /* XEmacs addition */
-
- #ifndef PURESIZE
- #define PURESIZE 800000
- #endif
-
- /* XEmacs: The Dec CC compiler (but apparently not GCC, which uses different
- macros due to its own compiler bug) breaks spectacularly
- when MACROIZE_ERROR_CHECKING is turned on. */
- #define BROKEN_MACROIZE_ERROR_CHECKING
-