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- /* machine description file for Convex (all models).
- Copyright (C) 1987, 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 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. */
-
- /* The following line tells the configuration script what sort of
- operating system this machine is likely to run.
- USUAL-OPSYS="bsd4-3" */
-
- /* Define WORD_MACHINE if addresses and such have
- * to be corrected before they can be used as byte counts. */
-
- /* #define WORD_MACHINE */
-
- /* Now define a symbol for the cpu type, if your compiler
- does not define it automatically. */
- #ifndef convex /* The compiler doesn't always do this. */
- #define convex
- #endif
-
- /* Use type int rather than a union, to represent Lisp_Object */
- /* This is desirable for most machines. */
-
- #define NO_UNION_TYPE
-
- #ifndef __GNUC__ /* David M. Cooke <dcooke@haven.larc.nasa.gov>
- and Ralph Sobek <Ralph.Sobek@cerfacs.fr> agree
- must ignore one arg when compiled with convex compiler. */
- #define CRT0_DUMMIES ignore,
- #else
- #define CRT0_DUMMIES
- #endif
-
- /* crt0.c should define a symbol `start' and do .globl with a dot. */
-
- #define DOT_GLOBAL_START
-
- /* Data type of load average, as read out of kmem. */
-
- #define LOAD_AVE_TYPE double
-
- /* Convert that into an integer that is 100 for a load average of 1.0 */
-
- #define LOAD_AVE_CVT(x) (int) ((x) * 100.0)
-
- /* 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. */
-
- /* #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 C_ALLOCA */
- #define HAVE_ALLOCA
-
- /* Must use the system's termcap. It does special things. */
-
- #define LIBS_TERMCAP -ltermcap
-
- /* 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 */
-
- /* Addresses on the Convex have the high bit set. */
- #define DATA_SEG_BITS (1 << (INTBITS-1))
-
- /* Right shift is logical shift.
- And the usual way of handling such machines, which involves
- copying the number into sign_extend_temp, does not work
- for reasons as yet unknown. */
-
- #define XINT(a) sign_extend_lisp_int (a)
-
- /* Convex uses a special version of unexec. */
-
- #define UNEXEC unexconvex.o
-
- /* you gotta define 'COFF' for post 6.1 unexec. */
-
- #define COFF
- #define TEXT_START 0x80001000
-
- /* Posix stuff for Convex OS 8.1 and up. */
-
- #define LD_SWITCH_MACHINE \
- -e__start -L /usr/lib \
- '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'
-
- #ifdef _POSIX_SOURCE
-
- /* These symbols have been undefined to advance the state of the art. */
-
- #define S_IFMT _S_IFMT
- #define S_IFDIR _S_IFDIR
-
- #define S_IREAD _S_IREAD
- #define S_IWRITE _S_IWRITE
- #define S_IEXEC _S_IEXEC
-
- #endif
-
- /* Ptys may start below ptyp0; call a routine to hunt for where. */
-
- #undef FIRST_PTY_LETTER
- #define FIRST_PTY_LETTER first_pty_letter()
-
- #if 0
- /*
- * Force a K&R compilation and libraries with the Convex V 4.0 C compiler
- */
- #define C_SWITCH_MACHINE -pcc
- #define LIB_STANDARD -lc_old
- #define LIBS_MACHINE -lC2_old
- #define LD_SWITCH_MACHINE -X -NL -fn -Enoposix -A__iob=___ap\$$iob \
- -A_use_libc_sema=___ap\$$use_libc_sema -L /usr/lib
- #endif
-
- /* Avoid error in xrdb.c - d.m.cooke@larc.nasa.gov. */
- #define DECLARE_GETPWUID_WITH_UID_T
-
- /* Call getpgrp properly. */
- #define GETPGRP_NO_ARG
-
- /* Tested for both Convex C and GNUC by d.m.cooke@larc.nasa.gov. */
- #define LIBS_MACHINE -lC2
-
- /* Avoid error in getloadavg.c. */
- #define NLIST_NAME_UNION 1
-
- #if 0 /* This is supposed to be an improvement.
- It would be good for people to try enabling this code
- and report the results. */
- /* gcc -nostdlib prevents some math symbols from being included.
- So we have to use -nostartfiles instead. */
- #define LINKER $(CC) -nostartfiles
-
- #define ORDINARY_LINK
-
- #undef LD_SWITCH_MACHINE
- #define LD_SWITCH_MACHINE \
- -L /usr/lib \
- '-A__iob=___ap$$iob' '-A_use_libc_sema=___ap$$use_libc_sema'
- #endif
-