Commit | Line | Data |
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23b0668c | 1 | /* Machine description file for intel 386. |
eb3d11ef | 2 | Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
49f70d46 | 3 | 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
20c428fd JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
eb3d11ef | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
20c428fd | 8 | it under the terms of the GNU General Public License as published by |
eb3d11ef GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
20c428fd JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
eb3d11ef | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
20c428fd JB |
19 | |
20 | ||
177c0ea7 | 21 | /* The following line tells the configuration script what sort of |
20c428fd JB |
22 | operating system this machine is likely to run. |
23 | USUAL-OPSYS="note" | |
24 | ||
25 | NOTE-START | |
f3041af1 | 26 | Intel 386 (-machine=intel386) |
20c428fd JB |
27 | |
28 | The possibilities for -opsystem are: bsd4-2, usg5-2-2, usg5-3, | |
f3041af1 | 29 | isc2-2, 386-ix, and linux. |
20c428fd JB |
30 | |
31 | 18.58 should support a wide variety of operating systems. | |
b2aaf43a JB |
32 | Use linux for Linux. |
33 | It isn't clear what to do on an SCO system. | |
20c428fd | 34 | |
20c428fd JB |
35 | NOTE-END */ |
36 | ||
22e9fe24 | 37 | /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word |
74d3f806 KH |
38 | is the most significant byte. */ |
39 | ||
40 | #undef WORDS_BIG_ENDIAN | |
41 | ||
20c428fd JB |
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 | ||
46b3f2be | 45 | #define NO_ARG_ARRAY |
20c428fd | 46 | |
20c428fd JB |
47 | /* crt0.c, if it is used, should use the i386-bsd style of entry. |
48 | with no extra dummy args. On USG and XENIX, | |
49 | NO_REMAP says this isn't used. */ | |
50 | ||
51 | #define CRT0_DUMMIES bogus_fp, | |
52 | ||
586b975c | 53 | #ifdef SOLARIS2 |
bb0807e7 RS |
54 | /* Data type of load average, as read out of kmem. */ |
55 | #define LOAD_AVE_TYPE long | |
56 | ||
57 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
58 | /* This is totally uncalibrated. */ | |
59 | #define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE)) | |
60 | ||
2eec96b2 | 61 | /* J.W.Hawtin@lut.ac.uk say Solaris 2.4 as well as Solaris 2.1 on X86 |
421e0af7 RS |
62 | requires -lkvm as well. |
63 | And handa@etl.gov.jp says that -lkvm needs -llelf, at least on 2.5. */ | |
64 | #define LIBS_MACHINE -lkvm -lelf | |
586b975c | 65 | |
7fa36802 RS |
66 | /* configure thinks solaris X86 has gethostname, but it does not work, |
67 | so undefine it. */ | |
bb0807e7 | 68 | #undef HAVE_GETHOSTNAME |
586b975c | 69 | |
5d32abe6 RS |
70 | #else /* not SOLARIS2 */ |
71 | #ifdef USG5_4 /* Older USG systems do not support the load average. */ | |
586b975c DN |
72 | /* Data type of load average, as read out of kmem. */ |
73 | ||
74 | #define LOAD_AVE_TYPE long | |
75 | ||
76 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
77 | /* This is totally uncalibrated. */ | |
78 | ||
79 | #define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE)) | |
5d32abe6 | 80 | #define FSCALE 256.0 |
c788afce | 81 | #endif /* USG5_4 */ |
5d32abe6 | 82 | #endif /* not SOLARIS2 */ |
bb0807e7 | 83 | |
20c428fd | 84 | #ifdef USG |
20c428fd | 85 | #define TEXT_START 0 |
ebfbbbe4 | 86 | #endif /* USG */ |
20c428fd | 87 | |
44177ab0 RS |
88 | #ifdef MSDOS |
89 | #define NO_REMAP | |
90 | #endif | |
8c147e40 KH |
91 | |
92 | #ifdef WINDOWSNT | |
93 | #define VIRT_ADDR_VARIES | |
8c147e40 | 94 | #define DATA_START get_data_start () |
6f4961eb | 95 | #define NO_ARG_ARRAY |
8c147e40 | 96 | #endif |
03d6a59e | 97 | |
7ab56cc4 | 98 | #ifdef GNU_LINUX |
03d6a59e RS |
99 | /* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */ |
100 | /* we cannot get the maximum address for brk */ | |
101 | #define ULIMIT_BREAK_VALUE (32*1024*1024) | |
102 | ||
103 | #define SEGMENT_MASK ((SEGMENT_SIZE)-1) | |
104 | #endif | |
ab5796a9 MB |
105 | |
106 | /* arch-tag: 746338f0-cb7b-4f49-a98c-cb50817cf2ec | |
107 | (do not change this comment) */ |