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Annotation of 43BSDReno/contrib/emacs-18.55/src/m-vax.h, revision 1.1.1.1

1.1       root        1: /* m- file for vax.
                      2:    Copyright (C) 1985, 1986 Free Software Foundation, Inc.
                      3: 
                      4: This file is part of GNU Emacs.
                      5: 
                      6: GNU Emacs is distributed in the hope that it will be useful,
                      7: but WITHOUT ANY WARRANTY.  No author or distributor
                      8: accepts responsibility to anyone for the consequences of using it
                      9: or for whether it serves any particular purpose or works at all,
                     10: unless he says so in writing.  Refer to the GNU Emacs General Public
                     11: License for full details.
                     12: 
                     13: Everyone is granted permission to copy, modify and redistribute
                     14: GNU Emacs, but only under the conditions described in the
                     15: GNU Emacs General Public License.   A copy of this license is
                     16: supposed to have been given to you along with GNU Emacs so you
                     17: can know your rights and responsibilities.  It should be in a
                     18: file named COPYING.  Among other things, the copyright notice
                     19: and this notice must be preserved on all copies.  */
                     20: 
                     21: 
                     22: /* The following three symbols give information on
                     23:  the size of various data types.  */
                     24: 
                     25: #define SHORTBITS 16           /* Number of bits in a short */
                     26: 
                     27: #define INTBITS 32             /* Number of bits in an int */
                     28: 
                     29: #define LONGBITS 32            /* Number of bits in a long */
                     30: 
                     31: /* Vax is not big-endian: lowest numbered byte is least significant. */
                     32: 
                     33: /* #undef BIG_ENDIAN */
                     34: 
                     35: /* Define how to take a char and sign-extend into an int.
                     36:    On machines where char is signed, this is a no-op.  */
                     37: 
                     38: #define SIGN_EXTEND_CHAR(c) (c)
                     39: 
                     40: /* #define vax    -- appears to be done automatically  */
                     41: 
                     42: /* Use type int rather than a union, to represent Lisp_Object */
                     43: 
                     44: #define NO_UNION_TYPE
                     45: 
                     46: /* crt0.c should use the vax-bsd style of entry, with no dummy args.  */
                     47: 
                     48: #define CRT0_DUMMIES
                     49: 
                     50: /* crt0.c should define a symbol `start' and do .globl with a dot.  */
                     51: 
                     52: #define DOT_GLOBAL_START
                     53: 
                     54: #ifdef BSD
                     55: /* USG systems I know of running on Vaxes do not actually
                     56:    support the load average, so disable it for them.  */
                     57: 
                     58: /* Data type of load average, as read out of kmem.  */
                     59: 
                     60: #define LOAD_AVE_TYPE double
                     61: 
                     62: /* Convert that into an integer that is 100 for a load average of 1.0  */
                     63: 
                     64: #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
                     65: 
                     66: #endif /* BSD */
                     67: 
                     68: #ifdef VMS
                     69: 
                     70: /* Data type of load average, as read out of driver.  */
                     71: 
                     72: #define LOAD_AVE_TYPE float
                     73: 
                     74: /* Convert that into an integer that is 100 for a load average of 1.0  */
                     75: 
                     76: #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
                     77: 
                     78: #endif /* VMS */
                     79: 
                     80: /* Vax sysV has alloca in the PW library.  */
                     81: 
                     82: #ifdef USG
                     83: #define LIB_STANDARD -lPW -lc
                     84: #define HAVE_ALLOCA
                     85: 
                     86: /* There is some bug in unexec in for usg 5.2 on a vax
                     87:    which nobody who runs such a system has yet tracked down. */
                     88: #ifndef USG5_0
                     89: #define NO_REMAP
                     90: #endif /* USG 5_0 */
                     91: 
                     92: #define TEXT_START 0
                     93: #endif /* USG */
                     94: 
                     95: #ifdef BSD
                     96: #define HAVE_ALLOCA
                     97: #endif /* BSD */
                     98: 
                     99: #ifdef VMS
                    100: #define C_ALLOCA
                    101: #endif

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