[bpt/emacs.git] / src / m / sequent-ptx.h

/* machine description file for SEQUENT machines running DYNIX/ptx
   Copyright (C) 1985, 1986 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, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


/* The following line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="ptx"  */

#include "intel386.h"

/* Define how to take a char and sign-extend into an int.
   On machines where char is signed, this is a no-op.  */
/* CHECK THIS */
#define SIGN_EXTEND_CHAR(c) (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.  */

/* BTW: ptx defines _SEQUENT_, i386 */

/* Use type int rather than a union, to represent Lisp_Object */
/* This is desirable for most machines.  */

#define NO_UNION_TYPE

/* crt0.c should use the vax-bsd style of entry, with these dummy args.  */
/* Already defined.  Assume prior definition works for PTX.  */
#if 0
#undef CRT0_DUMMIES
#define CRT0_DUMMIES dummy1, dummy2, dummy3,
#endif

/* 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 unsigned long

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define	FSCALE	1000.0
#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.  */

#ifndef __GNUC__
#define C_ALLOCA
#undef HAVE_ALLOCA
#endif

/* 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.  */
/* On PTX, can't seem to get a valid executable unless NO_REMAP is
   defined.  This did work in the Sequent patched Emacs 18.57.  */
#ifndef NO_REMAP
#define NO_REMAP
#endif
/* #undef NO_REMAP */

/* If a valid PTX executable could be dumped without NO_REMAP defined, 
   here's a guess at some defines to make it work.  */
#ifndef NO_REMAP

/* PTX has getpagesize() but it returns 296. Using the default method of
   including getpagesize.h in unexec.c returns 4096 which seems more
   reasonable.  */
#undef HAVE_GETPAGESIZE

/* Override magic number for a.out header.  */
#define EXEC_MAGIC 0411		/* from a.out.h: separated I&D */

#define ADJUST_TEXT_SCNHDR_SIZE
#define ADJUST_TEXTBASE

/* The file sections in the Symmetry a.out must be on 4K boundaries.  */
/* #define DATA_SECTION_ALIGNMENT       (4096-1) */

#endif  /* ifndef NO_REMAP */

/* Avoids a compiler bug.  */
#define TAHOE_REGISTER_BUG

/* (short) negative-int doesn't sign-extend correctly.  */
#define SHORT_CAST_BUG

/* Cause compilations to be done in parallel in ymakefile.  */
#define MAKE_PARALLEL $&

/* Use terminfo library.  */
#define LIBS_TERMCAP -ltermlib
Commit	Line	Data
59915a53 RS	1	/* machine description file for SEQUENT machines running DYNIX/ptx
	2	Copyright (C) 1985, 1986 Free Software Foundation, Inc.
	3
	4	This file is part of GNU Emacs.
	5
	6	GNU Emacs is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	GNU Emacs is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs; see the file COPYING. If not, write to
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
59915a53 RS	20
	21
	22	/* The following line tells the configuration script what sort of
	23	operating system this machine is likely to run.
	24	USUAL-OPSYS="ptx" */
	25
	26	#include "intel386.h"
	27
	28	/* Define how to take a char and sign-extend into an int.
	29	On machines where char is signed, this is a no-op. */
	30	/* CHECK THIS */
	31	#define SIGN_EXTEND_CHAR(c) (c)
	32
	33	/* Now define a symbol for the cpu type, if your compiler
	34	does not define it automatically:
	35	Ones defined so far include vax, m68000, ns16000, pyramid,
	36	orion, tahoe, APOLLO and many others. */
	37
	38	/* BTW: ptx defines _SEQUENT_, i386 */
	39
	40	/* Use type int rather than a union, to represent Lisp_Object */
	41	/* This is desirable for most machines. */
	42
	43	#define NO_UNION_TYPE
	44
	45	/* crt0.c should use the vax-bsd style of entry, with these dummy args. */
	46	/* Already defined. Assume prior definition works for PTX. */
	47	#if 0
	48	#undef CRT0_DUMMIES
	49	#define CRT0_DUMMIES dummy1, dummy2, dummy3,
	50	#endif
	51
	52	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	53	the 24-bit bit field into an int. In other words, if bit fields
	54	are always unsigned.
	55
	56	If you use NO_UNION_TYPE, this flag does not matter. */
	57
	58	#define EXPLICIT_SIGN_EXTEND
	59
	60	/* Data type of load average, as read out of kmem. */
	61
	62	#define LOAD_AVE_TYPE unsigned long
	63
	64	/* Convert that into an integer that is 100 for a load average of 1.0 */
	65
	66	#define FSCALE 1000.0
	67	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
	68
	69	/* Define CANNOT_DUMP on machines where unexec does not work.
	70	Then the function dump-emacs will not be defined
	71	and temacs will do (load "loadup") automatically unless told otherwise. */
	72
	73	/* #define CANNOT_DUMP */
	74
	75	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	76	pure and impure space as loaded can vary, and even their
	77	relative order cannot be relied on.
	78
	79	Otherwise Emacs assumes that text space precedes data space,
	80	numerically. */
	81
	82	/* #define VIRT_ADDR_VARIES */
	83
84	/* Define C_ALLOCA if this machine does not support a true alloca
85	and the one written in C should be used instead.
86	Define HAVE_ALLOCA to say that the system provides a properly
87	working alloca function and it should be used.
88	Define neither one if an assembler-language alloca
89	in the file alloca.s should be used. */
90
91	#ifndef __GNUC__
92	#define C_ALLOCA
93	#undef HAVE_ALLOCA
94	#endif
95
96	/* Define NO_REMAP if memory segmentation makes it not work well
97	to change the boundary between the text section and data section
98	when Emacs is dumped. If you define this, the preloaded Lisp
99	code will not be sharable; but that's better than failing completely. */
100	/* On PTX, can't seem to get a valid executable unless NO_REMAP is
101	defined. This did work in the Sequent patched Emacs 18.57. */
102	#ifndef NO_REMAP
103	#define NO_REMAP
104	#endif
105	/* #undef NO_REMAP */
106
107	/* If a valid PTX executable could be dumped without NO_REMAP defined,
108	here's a guess at some defines to make it work. */
109	#ifndef NO_REMAP
110
111	/* PTX has getpagesize() but it returns 296. Using the default method of
112	including getpagesize.h in unexec.c returns 4096 which seems more
113	reasonable. */
3abc2d46	114	#undef HAVE_GETPAGESIZE
59915a53 RS	115
	116	/* Override magic number for a.out header. */
	117	#define EXEC_MAGIC 0411 /* from a.out.h: separated I&D */
	118
	119	#define ADJUST_TEXT_SCNHDR_SIZE
	120	#define ADJUST_TEXTBASE
	121
	122	/* The file sections in the Symmetry a.out must be on 4K boundaries. */
	123	/* #define DATA_SECTION_ALIGNMENT (4096-1) */
	124
	125	#endif /* ifndef NO_REMAP */
	126
	127	/* Avoids a compiler bug. */
	128	#define TAHOE_REGISTER_BUG
	129
	130	/* (short) negative-int doesn't sign-extend correctly. */
	131	#define SHORT_CAST_BUG
	132
	133	/* Cause compilations to be done in parallel in ymakefile. */
	134	#define MAKE_PARALLEL $&
	135
	136	/* Use terminfo library. */
	137	#define LIBS_TERMCAP -ltermlib
	138