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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 /* XINT must explicitly sign-extend */
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46
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47 #define EXPLICIT_SIGN_EXTEND
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48
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49 /* Data type of load average, as read out of kmem. */
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50
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51 #define LOAD_AVE_TYPE long
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52
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53 /* Convert that into an integer that is 100 for a load average of 1.0 */
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54
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55 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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56
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57 /* Mask for address bits within a memory segment */
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58
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59 #define SEGMENT_MASK (SEGSIZ - 1)
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60
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61 #ifndef __NetBSD__
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62 #ifndef __linux__
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63 /* This really belongs in s/sun.h. */
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64
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65 /* Say that the text segment of a.out includes the header;
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66 the header actually occupies the first few bytes of the text segment
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67 and is counted in hdr.a_text. */
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68
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69 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
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70
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71 /* This is the offset of the executable's text, from the start of the file. */
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72
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73 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
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74
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75 #endif /* __linux__ */
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76 #endif /* __NetBSD__ */
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