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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994,1995,1996, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | ||
23 | /* For backward compatibility only - load a standalone cache macro table */ | |
24 | ||
25 | /* Instruction unpacking: | |
26 | ||
27 | Once the instruction has been decoded, the register (and other) | |
28 | fields within the instruction need to be extracted. | |
29 | ||
30 | The table that follows determines how each field should be treated. | |
31 | Importantly it considers the case where the extracted field is to | |
32 | be used immediatly or stored in an instruction cache. | |
33 | ||
34 | <type> | |
35 | ||
36 | Indicates what to do with the cache entry. If a cache is to be | |
37 | used. SCRATCH and CACHE values are defined when a cache entry is | |
38 | being filled while CACHE and COMPUTE values are defined in the | |
39 | semantic code. | |
40 | ||
41 | Zero marks the end of the table. More importantly 1. indicates | |
42 | that the entry is valid and can be cached. 2. indicates that that | |
43 | the entry is valid but can not be cached. | |
44 | ||
45 | <field_name> | |
46 | ||
47 | The field name as given in the instruction spec. | |
48 | ||
49 | <derived_name> | |
50 | ||
51 | A new name for <field_name> once it has been extracted from the | |
52 | instruction (and possibly stored in the instruction cache). | |
53 | ||
54 | <type> | |
55 | ||
56 | String specifying the storage type for <new_name> (the extracted | |
57 | field>. | |
58 | ||
59 | <expression> | |
60 | ||
61 | Specifies how to get <new_name> from <old_name>. If null, old and | |
62 | new name had better be the same. */ | |
63 | ||
64 | ||
65 | extern cache_entry *load_cache_table | |
66 | (char *file_name); |