Commit | Line | Data |
---|---|---|
3e5b698e | 1 | /* machine description file for IBM S390 in 64-bit mode |
49c1c3cc GM |
2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
3 | Free Software Foundation, Inc. | |
3e5b698e RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
eb3d11ef | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
3e5b698e | 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. | |
3e5b698e RS |
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/>. */ |
3e5b698e RS |
19 | |
20 | /* This file was made by copying the significant parts of amdx86-64.h | |
21 | into ibms390.h. */ | |
22 | ||
23 | ||
99dfbaf1 | 24 | /* The following line tells the configuration script what sort of |
3e5b698e RS |
25 | operating system this machine is likely to run. |
26 | USUAL-OPSYS="<name of system .h file here, without the s- or .h>" | |
27 | ||
28 | NOTE-START | |
29 | IBM s390 64 bits (-machine=ibms390x64) | |
30 | ||
31 | The possibilities for -opsystem are: gnu-linux. | |
32 | ||
33 | NOTE-END */ | |
34 | ||
35 | #define BITS_PER_LONG 64 | |
36 | #define BITS_PER_EMACS_INT 64 | |
37 | ||
22e9fe24 | 38 | /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word |
3e5b698e RS |
39 | is the most significant byte. */ |
40 | ||
41 | #define WORDS_BIG_ENDIAN | |
42 | ||
43 | /* Define NO_ARG_ARRAY if you cannot take the address of the first of a | |
44 | * group of arguments and treat it as an array of the arguments. */ | |
45 | ||
46 | #define NO_ARG_ARRAY | |
47 | ||
3e5b698e RS |
48 | /* Define the type to use. */ |
49 | #define EMACS_INT long | |
50 | #define EMACS_UINT unsigned long | |
3e5b698e RS |
51 | |
52 | /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend | |
53 | the 24-bit bit field into an int. In other words, if bit fields | |
54 | are always unsigned. | |
55 | ||
6e5cb96f | 56 | This flag only matters if you use USE_LISP_UNION_TYPE. */ |
3e5b698e RS |
57 | |
58 | #undef EXPLICIT_SIGN_EXTEND | |
59 | ||
60 | /* Data type of load average, as read out of kmem. */ | |
61 | ||
62 | #define LOAD_AVE_TYPE long | |
63 | ||
64 | /* Convert that into an integer that is 100 for a load average of 1.0 */ | |
65 | ||
66 | #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE) | |
67 | ||
68 | /* Define CANNOT_DUMP on machines where unexec does not work. | |
69 | Then the function dump-emacs will not be defined | |
70 | and temacs will do (load "loadup") automatically unless told otherwise. */ | |
71 | ||
72 | #undef CANNOT_DUMP | |
73 | ||
74 | /* Define VIRT_ADDR_VARIES if the virtual addresses of | |
75 | pure and impure space as loaded can vary, and even their | |
76 | relative order cannot be relied on. | |
77 | ||
78 | Otherwise Emacs assumes that text space precedes data space, | |
79 | numerically. */ | |
80 | ||
81 | #define VIRT_ADDR_VARIES | |
82 | ||
99dfbaf1 GM |
83 | /* Define HAVE_ALLOCA to say that the system provides a properly |
84 | working alloca function and it should be used. Undefine it if an | |
85 | assembler-language alloca in the file alloca.s should be used. */ | |
3e5b698e | 86 | |
3e5b698e RS |
87 | #define HAVE_ALLOCA |
88 | ||
89 | /* Define NO_REMAP if memory segmentation makes it not work well | |
90 | to change the boundary between the text section and data section | |
91 | when Emacs is dumped. If you define this, the preloaded Lisp | |
92 | code will not be sharable; but that's better than failing completely. */ | |
93 | ||
94 | #undef NO_REMAP | |
95 | ||
96 | /* Some really obscure 4.2-based systems (like Sequent DYNIX) | |
97 | * do not support asynchronous I/O (using SIGIO) on sockets, | |
98 | * even though it works fine on tty's. If you have one of | |
99 | * these systems, define the following, and then use it in | |
100 | * config.h (or elsewhere) to decide when (not) to use SIGIO. | |
101 | * | |
102 | * You'd think this would go in an operating-system description file, | |
103 | * but since it only occurs on some, but not all, BSD systems, the | |
104 | * reasonable place to select for it is in the machine description | |
105 | * file. | |
106 | */ | |
107 | ||
108 | #undef NO_SOCK_SIGIO | |
109 | ||
110 | ||
111 | /* After adding support for a new system, modify the large case | |
112 | statement in the `configure' script to recognize reasonable | |
113 | configuration names, and add a description of the system to | |
114 | `etc/MACHINES'. | |
115 | ||
116 | If you've just fixed a problem in an existing configuration file, | |
117 | you should also check `etc/MACHINES' to make sure its descriptions | |
118 | of known problems in that configuration should be updated. */ | |
119 | ||
120 | #define PNTR_COMPARISON_TYPE unsigned long | |
121 | ||
122 | /* On the 64 bit architecture, we can use 60 bits for addresses */ | |
123 | ||
124 | #define VALBITS 60 | |
125 | ||
3e5b698e RS |
126 | #define LINKER $(CC) -nostdlib |
127 | ||
3e5b698e RS |
128 | /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */ |
129 | ||
130 | #define XPNTR(a) XUINT (a) | |
853e72d9 | 131 | |
d7695a63 | 132 | #undef START_FILES |
ea7a608a | 133 | #ifdef HAVE_LIB64_DIR |
d7695a63 | 134 | #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o |
b16ed52d GM |
135 | #else |
136 | #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o | |
137 | #endif | |
d7695a63 AS |
138 | |
139 | #undef LIB_STANDARD | |
ea7a608a | 140 | #ifdef HAVE_LIB64_DIR |
d7695a63 | 141 | #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o |
b16ed52d GM |
142 | #else |
143 | #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o | |
144 | #endif | |
d7695a63 | 145 | |
853e72d9 MB |
146 | /* arch-tag: 4b87653c-6add-4663-8691-7d9dc17b5519 |
147 | (do not change this comment) */ |