annotate src/m/sparc.h @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* machine description file for Sun 4 SPARC.
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2 Copyright (C) 1987, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /* The following line tells the configuration script what sort of
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24 operating system this machine is likely to run.
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25 USUAL-OPSYS="note"
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26
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27 NOTE-START
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28 Use -opsystem=sunos4 for operating system version 4, and
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29 -opsystem=bsd4-2 for earlier versions.
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30 NOTE-END */
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31
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32 /* XEmacs change */
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33 /* Say this machine is a sparc if we are not generating the Makefiles.
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34 In that case say we are a SPARC. Otherwise people who have sparc
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35 in a path will not be happy. */
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36
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37 #ifdef NOT_C_CODE
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38 # define SPARC
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39 #else
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40 # ifndef sparc
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41 # define sparc
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42 # endif
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43 #endif
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44
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45 #ifdef __GNUC__
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46 # define C_OPTIMIZE_SWITCH -O
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47 #else
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48 /* XEmacs change */
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49 # ifdef USE_LCC
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50 # define C_OPTIMIZE_SWITCH -O4 -Oi
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51 # else
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52 /* This level of optimization is reported to work. */
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53 # define C_OPTIMIZE_SWITCH -O2
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54 # endif
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55 #endif
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56
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57 /* XINT must explicitly sign-extend */
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58
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59 #define EXPLICIT_SIGN_EXTEND
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60
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61 /* Data type of load average, as read out of kmem. */
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62
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63 #define LOAD_AVE_TYPE long
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64
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65 /* Convert that into an integer that is 100 for a load average of 1.0 */
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66
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67 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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68
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69 /* Define C_ALLOCA if this machine does not support a true alloca
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70 and the one written in C should be used instead.
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71 Define HAVE_ALLOCA to say that the system provides a properly
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72 working alloca function and it should be used.
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73 Define neither one if an assembler-language alloca
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74 in the file alloca.s should be used. */
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75
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76 #define HAVE_ALLOCA
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77 #ifndef NOT_C_CODE
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78 #if __GNUC__ < 2 /* Modern versions of GCC handle alloca directly. */
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79 #include <alloca.h>
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80 #endif
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81 #endif
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82
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83 /* Solaris defines alloca to __builtin_alloca & does not provide a prototype */
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84 #ifdef __SUNPRO_C
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85 # ifndef NOT_C_CODE
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86 # include <alloca.h>
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87 void *__builtin_alloca (unsigned int);
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88 # endif
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89 #endif
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90
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91 /* Must use the system's termcap, if we use any termcap.
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92 It does special things. */
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93
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94 #ifndef TERMINFO
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95 #define LIBS_TERMCAP -ltermcap
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96 #endif
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97
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98 /* Mask for address bits within a memory segment */
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99
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100 #define SEGMENT_MASK (SEGSIZ - 1)
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101
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102 /* Arrange to link with sun windows, if requested. */
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103 /* For details on emacstool and sunfns, see etc/SUN-SUPPORT */
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104 /* These programs require Sun UNIX 4.2 Release 3.2 or greater */
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105
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106 #ifdef HAVE_SUN_WINDOWS
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107 #define OTHER_FILES ${etcdir}emacstool
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108 #define LIBS_MACHINE -lsuntool -lsunwindow -lpixrect
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109 #define OBJECTS_MACHINE sunfns.o
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110 #define SYMS_MACHINE syms_of_sunfns ()
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111 #define SYSTEM_PURESIZE_EXTRA 10000
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112 #endif
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113
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114 #ifndef __NetBSD__
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115 #ifndef __linux__
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116 /* This really belongs in s/sun.h. */
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117
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118 /* Say that the text segment of a.out includes the header;
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119 the header actually occupies the first few bytes of the text segment
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120 and is counted in hdr.a_text. */
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121
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122 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
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123
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124 /* This is the offset of the executable's text, from the start of the file. */
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125
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126 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
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127
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128 #endif /* __linux__ */
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129 #endif /* __NetBSD__ */