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

/* machine description file for SEQUENT machines running DYNIX/ptx
   Copyright (C) 1985, 1986, 2002, 2003, 2004,
                 2005, 2006 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, 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.  */

#undef LOAD_AVE_TYPE
#define LOAD_AVE_TYPE unsigned long

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

#undef FSCALE
#define	FSCALE	1000.0
#undef LOAD_AVE_CVT
#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 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

/* arch-tag: 0494629b-7e11-4f6f-865f-62254ac46099
   (do not change this comment) */
Commit	Line	Data
59915a53	1	/* machine description file for SEQUENT machines running DYNIX/ptx
b908093d	2	Copyright (C) 1985, 1986, 2002, 2003, 2004,
aaef169d	3	2005, 2006 Free Software Foundation, Inc.
59915a53 RS	4
	5	This file is part of GNU Emacs.
	6
	7	GNU Emacs is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2, or (at your option)
	10	any later version.
	11
	12	GNU Emacs is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GNU Emacs; see the file COPYING. If not, write to
364c38d3 LK	19	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
364c38d3 LK	20	Boston, MA 02110-1301, USA. */
59915a53 RS	21
59915a53 RS	22
177c0ea7	23	/* The following line tells the configuration script what sort of
59915a53 RS	24	operating system this machine is likely to run.
	25	USUAL-OPSYS="ptx" */
	26
	27	#include "intel386.h"
	28
	29	/* Define how to take a char and sign-extend into an int.
	30	On machines where char is signed, this is a no-op. */
	31	/* CHECK THIS */
	32	#define SIGN_EXTEND_CHAR(c) (c)
	33
	34	/* Now define a symbol for the cpu type, if your compiler
	35	does not define it automatically:
	36	Ones defined so far include vax, m68000, ns16000, pyramid,
	37	orion, tahoe, APOLLO and many others. */
	38
	39	/* BTW: ptx defines _SEQUENT_, i386 */
	40
	41	/* Use type int rather than a union, to represent Lisp_Object */
	42	/* This is desirable for most machines. */
	43
	44	#define NO_UNION_TYPE
	45
	46	/* crt0.c should use the vax-bsd style of entry, with these dummy args. */
	47	/* Already defined. Assume prior definition works for PTX. */
	48	#if 0
	49	#undef CRT0_DUMMIES
	50	#define CRT0_DUMMIES dummy1, dummy2, dummy3,
	51	#endif
	52
	53	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	54	the 24-bit bit field into an int. In other words, if bit fields
	55	are always unsigned.
	56
	57	If you use NO_UNION_TYPE, this flag does not matter. */
	58
	59	#define EXPLICIT_SIGN_EXTEND
	60
	61	/* Data type of load average, as read out of kmem. */
	62
cda40aea	63	#undef LOAD_AVE_TYPE
59915a53 RS	64	#define LOAD_AVE_TYPE unsigned long
	65
	66	/* Convert that into an integer that is 100 for a load average of 1.0 */
	67
cda40aea	68	#undef FSCALE
59915a53	69	#define FSCALE 1000.0
cda40aea	70	#undef LOAD_AVE_CVT
59915a53 RS	71	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
	72
	73	/* Define CANNOT_DUMP on machines where unexec does not work.
	74	Then the function dump-emacs will not be defined
	75	and temacs will do (load "loadup") automatically unless told otherwise. */
	76
	77	/* #define CANNOT_DUMP */
	78
	79	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	80	pure and impure space as loaded can vary, and even their
	81	relative order cannot be relied on.
	82
	83	Otherwise Emacs assumes that text space precedes data space,
	84	numerically. */
	85
	86	/* #define VIRT_ADDR_VARIES */
	87
59915a53 RS	88	/* Define NO_REMAP if memory segmentation makes it not work well
	89	to change the boundary between the text section and data section
	90	when Emacs is dumped. If you define this, the preloaded Lisp
	91	code will not be sharable; but that's better than failing completely. */
	92	/* On PTX, can't seem to get a valid executable unless NO_REMAP is
	93	defined. This did work in the Sequent patched Emacs 18.57. */
	94	#ifndef NO_REMAP
	95	#define NO_REMAP
	96	#endif
	97	/* #undef NO_REMAP */
	98
177c0ea7	99	/* If a valid PTX executable could be dumped without NO_REMAP defined,
59915a53 RS	100	here's a guess at some defines to make it work. */
	101	#ifndef NO_REMAP
	102
	103	/* PTX has getpagesize() but it returns 296. Using the default method of
	104	including getpagesize.h in unexec.c returns 4096 which seems more
	105	reasonable. */
3abc2d46	106	#undef HAVE_GETPAGESIZE
59915a53 RS	107
	108	/* Override magic number for a.out header. */
	109	#define EXEC_MAGIC 0411 /* from a.out.h: separated I&D */
	110
	111	#define ADJUST_TEXT_SCNHDR_SIZE
	112	#define ADJUST_TEXTBASE
	113
	114	/* The file sections in the Symmetry a.out must be on 4K boundaries. */
	115	/* #define DATA_SECTION_ALIGNMENT (4096-1) */
	116
	117	#endif /* ifndef NO_REMAP */
	118
	119	/* Avoids a compiler bug. */
	120	#define TAHOE_REGISTER_BUG
	121
	122	/* (short) negative-int doesn't sign-extend correctly. */
	123	#define SHORT_CAST_BUG
	124
	125	/* Cause compilations to be done in parallel in ymakefile. */
	126	#define MAKE_PARALLEL $&
	127
	128	/* Use terminfo library. */
	129	#define LIBS_TERMCAP -ltermlib
	130
ab5796a9 MB	131	/* arch-tag: 0494629b-7e11-4f6f-865f-62254ac46099
ab5796a9 MB	132	(do not change this comment) */