janssen@milano.UUCP (02/08/88)
Here are the files our local Sun people have provided:
First, the header file "m-sparc.h":
=======================================
/* m- file for Sun 4 SPARC.
Copyright (C) 1987 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY. No author or distributor
accepts responsibility to anyone for the consequences of using it
or for whether it serves any particular purpose or works at all,
unless he says so in writing. Refer to the GNU Emacs General Public
License for full details.
Everyone is granted permission to copy, modify and redistribute
GNU Emacs, but only under the conditions described in the
GNU Emacs General Public License. A copy of this license is
supposed to have been given to you along with GNU Emacs so you
can know your rights and responsibilities. It should be in a
file named COPYING. Among other things, the copyright notice
and this notice must be preserved on all copies. */
/* 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 */
/* SPARC has lowest-numbered byte as most significant */
#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 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) (c)
/* Say this machine is a sparc */
#ifndef sparc
#define sparc
#endif
/* This level of optimization is reported to work. */
#define C_OPTIMIZE_SWITCH -O2
/* Use type int rather than a union, to represent Lisp_Object */
#define NO_UNION_TYPE
/* XINT must explicitly sign-extend */
#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 / FSCALE)
/* 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
#include <alloca.h>
/* Must use the system's termcap. It does special things. */
#define LIBS_TERMCAP -ltermcap
/* Mask for address bits within a memory segment */
#define SEGMENT_MASK (SEGSIZ - 1)
/* Arrange to link with sun windows, if requested. */
/* For details on emacstool and sunfns, see etc/SUN-SUPPORT */
/* These programs require Sun UNIX 4.2 Release 3.2 or greater */
#ifdef HAVE_SUN_WINDOWS
#define OTHER_FILES ${etcdir}emacstool
#define LIBS_MACHINE -lsuntool -lsunwindow -lpixrect
#define OBJECTS_MACHINE sunfns.o
#define SYMS_MACHINE syms_of_sunfns ()
#define PURESIZE 130000
#endif
/* Say that the text segment of a.out includes the header;
the header actually occupies the first few bytes of the text segment
and is counted in hdr.a_text. */
#define A_TEXT_OFFSET(HDR) sizeof (HDR)
===============================
And here are the lines that need to be added to crt0.c (just add them to
the end of the file):
===============================
#ifdef sparc
asm (".global __start");
asm (".text");
asm ("__start:");
asm (" mov 0, %fp");
asm (" ld [%sp + 64], %o0");
asm (" add %sp, 68, %o1");
asm (" sll %o0, 2, %o2");
asm (" add %o2, 4, %o2");
asm (" add %o1, %o2, %o2");
asm (" sethi %hi(_environ), %o3");
asm (" st %o2, [%o3+%lo(_environ)]");
asm (" andn %sp, 7, %sp");
asm (" call _main");
asm (" sub %sp, 24, %sp");
asm (" call __exit");
asm (" nop");
#endif /* sparc */
========================
Enjoy.
Bill
--
Bill Janssen, MCC Software Technology Program
ARPA: janssen@sw.mcc.com
UUCP: {seismo,harvard,gatech,pyramid}!ut-sally!im4u!milano!janssen