-/* machine description file For the alpha chip.
- Copyright (C) 1994, 1997, 1999, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007 Free Software Foundation, Inc.
+/* Machine description file for the alpha chip.
+
+Copyright (C) 1994, 1997, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
+ 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+
+Author: Rainer Schoepf
+(according to authors.el)
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+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 3, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, 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
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="note"
-
-NOTE-START
-Use -opsystem=osf1
-NOTE-END
-
-*/
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _LP64
-#define _LP64 /* This doesn't appear to be necessary
- on OSF 4/5 -- fx. */
+#define _LP64 /* This doesn't appear to be necessary on OSF 4/5 -- fx. */
#endif
/* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
is the most significant byte. */
-
#undef 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
-
/* 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 */
-
+ does not define it automatically. */
/* __alpha defined automatically */
-/* Use type EMACS_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. */
-
+ This flag only matters if you use USE_LISP_UNION_TYPE. */
#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)
/* GNU malloc and the relocating allocator do not work together
/* #define SYSTEM_MALLOC */
#ifdef __ELF__
-/* With ELF, make sure that all common symbols get allocated to in the
- data section. Otherwise, the dump of temacs may miss variables in
- the shared library that have been initialized. For example, with
- GNU libc, __malloc_initialized would normally be resolved to the
- shared library's .bss section, which is fatal. */
-# ifdef __GNUC__
-# define C_SWITCH_MACHINE -fno-common
-# else
-# error What gives? Fix me if DEC Unix supports ELF now.
-# endif
-#endif
-#ifdef __ELF__
#undef UNEXEC
#define UNEXEC unexelf.o
-#ifndef LINUX
+#if !defined(GNU_LINUX) && !defined(__NetBSD__)
#define DATA_START 0x140000000
#endif
+
+#if (defined (__NetBSD__) || defined (__OpenBSD__))
+#define HAVE_TEXT_START
#endif
-#ifndef __ELF__
+#else /* not __ELF__ */
/* Describe layout of the address space in an executing process. */
-
#define TEXT_START 0x120000000
#define DATA_START 0x140000000
/* The program to be used for unexec. */
-
#define UNEXEC unexalpha.o
-#endif /* notdef __ELF__ */
-
-#if defined (LINUX) && __GNU_LIBRARY__ - 0 < 6
-/* This controls a conditional in main. */
-#define LINUX_SBRK_BUG
-#endif
+#endif /* __ELF__ */
/* On the Alpha it's best to avoid including TERMIO since struct
termio and struct termios are mutually incompatible. */
#define NO_TERMIO
-#if defined (LINUX) || defined (__NetBSD__) || defined (__OpenBSD__)
-# define TEXT_END ({ extern int _etext; &_etext; })
+#if defined (GNU_LINUX) || defined (__NetBSD__) || defined (__OpenBSD__)
# ifndef __ELF__
# define COFF
-# define DATA_END ({ extern int _EDATA; &_EDATA; })
# endif /* notdef __ELF__ */
#endif
-#if (defined (__NetBSD__) || defined (__OpenBSD__)) && defined (__ELF__)
-#define HAVE_TEXT_START
-#endif
-
/* Many Alpha implementations (e.g. gas 2.8) can't handle DBL_MIN:
they generate code that uses a signaling NaN instead of DBL_MIN.
Define DBL_MIN_REPLACEMENT to be the next value larger than DBL_MIN: