src/m/mips-siemens.h

   1 /* m- file for Mips machines.
   2    Copyright (C) 1987, 1992, 1993, 1995, 2001, 2002, 2003, 2004, 2005,
   3                  2006, 2007, 2008  Free Software Foundation, Inc.
   4
   5    This file contains some changes for our SVR4 based SINIX-Mips 5.4.
   6    I hope this is helpful to port the emacs to our RM?00 series and
   7    maybe to the DC/OSx (Mips-based) machines of Pyramid Inc.
   8      (Marco.Walther@mch.sni.de)
   9
  10 This file is part of GNU Emacs.
  11
  12 GNU Emacs is free software: you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation, either version 3 of the License, or
  15 (at your option) any later version.
  16
  17 GNU Emacs is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  24
  25
  26 /* The following line tells the configuration script what sort of
  27    operating system this machine is likely to run.
  28    USUAL-OPSYS="note"
  29
  30 NOTE-START
  31 Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
  32 Note that the proper m- file for the Decstation is m-pmax.h.
  33 This is the m- file for SNI RM*00 machines. Use s- sinix5-4.h file!
  34 With this the file mips-siemens.h is obsolete.
  35 NOTE-END  */
  36
  37 /* Define BIG_ENDIAN if lowest-numbered byte in a word
  38    is the most significant byte.  */
  39
  40 #define BIG_ENDIAN
  41
  42 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  43  * group of arguments and treat it as an array of the arguments.  */
  44
  45 #define NO_ARG_ARRAY
  46
  47 /* Define WORD_MACHINE if addresses and such have
  48  * to be corrected before they can be used as byte counts.  */
  49
  50 #undef WORD_MACHINE
  51
  52 /* Define how to take a char and sign-extend into an int.
  53    On machines where char is signed, this is a no-op.  */
  54
  55 #define SIGN_EXTEND_CHAR(c) ((signed char)(c))
  56
  57 /* Now define a symbol for the cpu type, if your compiler
  58    does not define it automatically:
  59    Ones defined so far include vax, m68000, ns16000, pyramid,
  60    orion, tahoe, APOLLO and many others */
  61 #ifndef mips
  62 #       define mips
  63 #endif
  64
  65 /* Use type int rather than a union, to represent Lisp_Object */
  66 /* This is desirable for most machines.  */
  67
  68 #define NO_UNION_TYPE
  69
  70 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  71    the 24-bit bit field into an int.  In other words, if bit fields
  72    are always unsigned.
  73
  74    If you use NO_UNION_TYPE, this flag does not matter.  */
  75
  76 #define EXPLICIT_SIGN_EXTEND
  77
  78 /* Data type of load average, as read out of kmem.  */
  79
  80 #define LOAD_AVE_TYPE long
  81
  82 /* Convert that into an integer that is 100 for a load average of 1.0  */
  83
  84 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
  85
  86 /* CDC EP/IX 1.4.3 uses /unix */
  87
  88 #undef KERNEL_FILE
  89 #define KERNEL_FILE "/unix"
  90
  91 /* Define CANNOT_DUMP on machines where unexec does not work.
  92    Then the function dump-emacs will not be defined
  93    and temacs will do (load "loadup") automatically unless told otherwise.  */
  94
  95 #undef CANNOT_DUMP
  96
  97 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  98    pure and impure space as loaded can vary, and even their
  99    relative order cannot be relied on.
 100
 101    Otherwise Emacs assumes that text space precedes data space,
 102    numerically.  */
 103
 104 /* #define VIRT_ADDR_VARIES */
 105
 106 /* Define NO_REMAP if memory segmentation makes it not work well
 107    to change the boundary between the text section and data section
 108    when Emacs is dumped.  If you define this, the preloaded Lisp
 109    code will not be sharable; but that's better than failing completely.  */
 110
 111 #define NO_REMAP
 112
 113 /* Describe layout of the address space in an executing process.  */
 114 /* MARCO ???
 115 */
 116 #define TEXT_START 0x400000
 117 /*
 118 #define DATA_START 0x10000000
 119 #define DATA_SEG_BITS   0x10000000
 120 */
 121 #ifdef UNEXEC
 122 #undef UNEXEC
 123 #endif
 124 #define UNEXEC unexsni.o
 125
 126 #undef ORDINARY_LINK
 127
 128 #undef LIBS_DEBUG
 129
 130 /* Alter some of the options used when linking.  */
 131
 132 #define LIBS_MACHINE -lmld
 133 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
 134
 135 #ifdef LIB_STANDARD
 136 #undef LIB_STANDARD
 137 #endif
 138 #define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
 139
 140 #ifdef __GNUC__
 141 #define C_DEBUG_SWITCH
 142 #define LD_SWITCH_MACHINE
 143 #else
 144 #define C_DEBUG_SWITCH -DSYSV
 145 #define C_OPTIMIZE_SWITCH -DSYSV
 146 #define LD_SWITCH_MACHINE
 147 #endif
 148
 149 \f
 150 /* The standard definitions of these macros would work ok,
 151    but these are faster because the constants are short.  */
 152
 153 #define XUINT(a) (((unsigned)(a) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS))
 154
 155 #define XSET(var, type, ptr)                                            \
 156   ((var) =                                                              \
 157    ((int)(type) << VALBITS)                                             \
 158    + (((unsigned) (ptr) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS)))
 159
 160 /* arch-tag: a4f5c090-0bd5-48f0-9724-b7d531f9b6c8
 161    (do not change this comment) */