[bpt/emacs.git] / src / m / ibms390.h

/* machine description file template.
   Copyright (C) 1985, 1986, 2001, 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="<name of system .h file here, without the s- or .h>"  */

/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
   is the most significant byte.  */

#define WORDS_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 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:
   Ones defined so far include vax, m68000, ns16000, pyramid,
   orion, tahoe, APOLLO and many others */

#define s390

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

#define NO_UNION_TYPE

/* 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 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 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*/


/* After adding support for a new system, modify the large case
   statement in the `configure' script to recognize reasonable
   configuration names, and add a description of the system to
   `etc/MACHINES'.

   If you've just fixed a problem in an existing configuration file,
   you should also check `etc/MACHINES' to make sure its descriptions
   of known problems in that configuration should be updated.  */

/* arch-tag: d8a0ffa4-a8f0-4736-90d3-7fd7b21b8314
   (do not change this comment) */
Commit	Line	Data
e64fed1d	1	/* machine description file template.
b908093d	2	Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004,
aaef169d	3	2005, 2006 Free Software Foundation, Inc.
e64fed1d EZ	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. */
e64fed1d EZ	21
e64fed1d EZ	22
177c0ea7	23	/* The following line tells the configuration script what sort of
e64fed1d EZ	24	operating system this machine is likely to run.
	25	USUAL-OPSYS="<name of system .h file here, without the s- or .h>" */
	26
	27	/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
	28	is the most significant byte. */
	29
	30	#define WORDS_BIG_ENDIAN
	31
	32	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	33	* group of arguments and treat it as an array of the arguments. */
	34
	35	#define NO_ARG_ARRAY
	36
	37	/* Define WORD_MACHINE if addresses and such have
	38	* to be corrected before they can be used as byte counts. */
	39
	40	#define WORD_MACHINE
	41
	42	/* Now define a symbol for the cpu type, if your compiler
	43	does not define it automatically:
	44	Ones defined so far include vax, m68000, ns16000, pyramid,
	45	orion, tahoe, APOLLO and many others */
	46
	47	#define s390
	48
	49	/* Use type int rather than a union, to represent Lisp_Object */
	50	/* This is desirable for most machines. */
	51
	52	#define NO_UNION_TYPE
	53
	54	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	55	the 24-bit bit field into an int. In other words, if bit fields
	56	are always unsigned.
	57
	58	If you use NO_UNION_TYPE, this flag does not matter. */
	59
	60	#define EXPLICIT_SIGN_EXTEND
	61
	62	/* Data type of load average, as read out of kmem. */
	63
	64	#define LOAD_AVE_TYPE long
	65
	66	/* Convert that into an integer that is 100 for a load average of 1.0 */
	67
	68	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
	69
	70	/* Define CANNOT_DUMP on machines where unexec does not work.
	71	Then the function dump-emacs will not be defined
	72	and temacs will do (load "loadup") automatically unless told otherwise. */
	73
	74	/* #define CANNOT_DUMP */
	75
	76	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	77	pure and impure space as loaded can vary, and even their
	78	relative order cannot be relied on.
	79
	80	Otherwise Emacs assumes that text space precedes data space,
	81	numerically. */
	82
	83	#define VIRT_ADDR_VARIES
	84
e64fed1d EZ	85	/* Define NO_REMAP if memory segmentation makes it not work well
	86	to change the boundary between the text section and data section
	87	when Emacs is dumped. If you define this, the preloaded Lisp
	88	code will not be sharable; but that's better than failing completely. */
	89
	90	/#define NO_REMAP /
	91
	92	/* Some really obscure 4.2-based systems (like Sequent DYNIX)
	93	* do not support asynchronous I/O (using SIGIO) on sockets,
	94	* even though it works fine on tty's. If you have one of
	95	* these systems, define the following, and then use it in
	96	* config.h (or elsewhere) to decide when (not) to use SIGIO.
	97	*
	98	* You'd think this would go in an operating-system description file,
	99	* but since it only occurs on some, but not all, BSD systems, the
	100	* reasonable place to select for it is in the machine description
	101	* file.
	102	*/
	103
	104	/#define NO_SOCK_SIGIO/
	105
	106
	107	/* After adding support for a new system, modify the large case
	108	statement in the `configure' script to recognize reasonable
	109	configuration names, and add a description of the system to
	110	`etc/MACHINES'.
	111
	112	If you've just fixed a problem in an existing configuration file,
	113	you should also check `etc/MACHINES' to make sure its descriptions
	114	of known problems in that configuration should be updated. */
ab5796a9 MB	115
	116	/* arch-tag: d8a0ffa4-a8f0-4736-90d3-7fd7b21b8314
	117	(do not change this comment) */