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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: sw_arch.h,v 1.2 2004/04/08 01:52:19 mdw Exp $ |
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4 | * |
5 | * Messing with architectures |
6 | * |
7 | * (c) 1999 EBI |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of sw-tools. |
13 | * |
14 | * sw-tools is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * sw-tools is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with sw-tools; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
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29 | #ifndef SW_ARCH_H |
30 | #define SW_ARCH_H |
31 | |
32 | #ifdef __cplusplus |
33 | extern "C" { |
34 | #endif |
35 | |
36 | /*----- Header files ------------------------------------------------------*/ |
37 | |
38 | #include <mLib/dstr.h> |
39 | |
40 | /*----- Data structures ---------------------------------------------------*/ |
41 | |
42 | /* --- @archcons@ --- * |
43 | * |
44 | * Links architectures into a list. It's done like this so that we can have |
45 | * multiple lists all referring to the same data. |
46 | */ |
47 | |
48 | typedef struct archcons { |
49 | struct archent *car; |
50 | struct archcons *cdr; |
51 | } archcons; |
52 | |
53 | /* --- @archent@ --- * |
54 | * |
55 | * Records information extracted from the `archtab' file, together with some |
56 | * other data used at run-time for the parallel build stuff. |
57 | */ |
58 | |
59 | typedef struct archent { |
60 | struct archcons cons; /* Cons for linking these together */ |
61 | char *arch; /* The architecture name */ |
62 | char *host; /* The architecture representative */ |
63 | int status; /* Exit status from build process */ |
64 | struct sw_remote *r; /* Remote command control block */ |
65 | void *pres; /* Data for presentation handler */ |
66 | unsigned flags; /* Various other flags */ |
67 | } archent; |
68 | |
69 | /* --- Flags --- */ |
70 | |
71 | enum { |
72 | archFlag_touched = 1, /* Unique flag: see @arch_filter@ */ |
73 | archFlag_built = 2, /* This architecture is up-to-date */ |
74 | archFlag_home = 4 /* This is the current arch */ |
75 | }; |
76 | |
77 | /*----- Functions provided ------------------------------------------------*/ |
78 | |
79 | /* --- @arch_readtab@ --- * |
80 | * |
81 | * Arguments: --- |
82 | * |
83 | * Returns: The address of the archtab list. |
84 | * |
85 | * Use: Reads the archtab file (if necessary) and returns a list of |
86 | * its contents. |
87 | */ |
88 | |
89 | extern archcons *arch_readtab(void); |
90 | |
91 | /* --- @arch_lookup@ --- * |
92 | * |
93 | * Arguments: @const char *arch@ = pointer to archtecture name |
94 | * @int abbrev@ = whether abbreviations are OK |
95 | * |
96 | * Returns: Pointer to archtab block, or null. |
97 | * |
98 | * Use: Translates an architecture name into the name of a host |
99 | * supporting that architecture. |
100 | */ |
101 | |
102 | extern archent *arch_lookup(const char */*arch*/, int /*abbrev*/); |
103 | |
104 | /* --- @arch_filter@ --- * |
105 | * |
106 | * Arguments: @archcons *a@ = input list to filter |
107 | * @const char *p@ = pointer to a textual list of architectures |
108 | * @unsigned and@, @unsigned xor@ = flags to look for |
109 | * |
110 | * Returns: A newly constructed architecture list containing only the |
111 | * listed architectures. |
112 | * |
113 | * Use: Filters the architecture list down to a few interesting |
114 | * architectures. |
115 | * |
116 | * If @p@ is non-null, it is a textual list of architecture |
117 | * names (possibly abbreviated), and separated by whitespace |
118 | * and/or commas: only the named architectures are included in |
119 | * the resulting list. If @p@ is null, all architectures are |
120 | * considered. |
121 | * |
122 | * The list is further trimmed down by examining the flags words |
123 | * in each entry. Only entries with flags @f@ where @(f ^ xor) |
124 | * & and@ is zero are left in the resulting list. (To include |
125 | * all entries, clear @and@ to zero. To require a flag to be |
126 | * clear, set the corresponding bit in @and@. To require a flag |
127 | * to be set, set the corresponding bit in both @and@ and @xor@. |
128 | * |
129 | * (Don't try to filter on the @archFlag_touched@ flag. That |
130 | * flag is for the internal use of this routine.) |
131 | */ |
132 | |
133 | extern archcons *arch_filter(archcons */*a*/, const char */*p*/, |
134 | unsigned /*and*/, unsigned /*xor*/); |
135 | |
136 | /* --- @arch_free@ --- * |
137 | * |
138 | * Arguments: @archcons *a@ = pointer to a list |
139 | * |
140 | * Returns: --- |
141 | * |
142 | * Use: Contrary to anything you might have expected from the Lispy |
143 | * naming, old architecture lists don't get garbage collected. |
144 | * This routine throws away an old list when you don't want it |
145 | * any more. Don't call this on the main list! It will fail |
146 | * miserably, because the cons cells in the main list are |
147 | * faked. |
148 | */ |
149 | |
150 | extern void arch_free(archcons */*a*/); |
151 | |
152 | /* --- @arch_toText@ --- * |
153 | * |
154 | * Arguments: @dstr *d@ = pointer to dynamic string to build result in |
155 | * @archcons *a@ = list to write into the string |
156 | * @unsigned and@, @unsigned xor@ = flags to look for |
157 | * |
158 | * Returns: --- |
159 | * |
160 | * Use: Writes a textual list of architectures to a string. This can |
161 | * then be used (for example) as the `only-arch' list in the |
162 | * info file, by filling it into a skeleton and calling |
163 | * @swinfo_update@. The @and@ and @xor@ arguments work in the |
164 | * same way as with @arch_filter@. |
165 | */ |
166 | |
167 | extern void arch_toText(dstr */*d*/, archcons */*a*/, |
168 | unsigned /*and*/, unsigned /*xor*/); |
169 | |
170 | /* --- Subcommands --- */ |
171 | |
172 | extern int sw_arch(int /*argc*/, char */*argv*/[]); |
173 | extern int sw_listarch(int /*argc*/, char */*argv*/[]); |
174 | extern int sw_host(int /*argc*/, char */*argv*/[]); |
175 | extern int sw_only(int /*argc*/, char */*argv*/[]); |
176 | extern int sw_all(int /*argc*/, char */*argv*/[]); |
177 | |
178 | #ifdef CMD_LINK |
179 | static cmd cmd_only = { |
180 | CMD_LINK, "only-arch", sw_only, |
181 | "only-arch ARCH,...\n\ |
182 | Restrict builds to a selection of architectures. (This option is\n\ |
183 | persistent. An `--arch' command-line option takes precedence,\n\ |
184 | though.)\n" |
185 | }; |
186 | static cmd cmd_all = { |
187 | &cmd_only, "all-arch", sw_all, |
188 | "all-arch\n\ |
189 | Clears the `only-arch' list. Subsequent builds occur across all\n\ |
190 | architectures.\n" |
191 | }; |
192 | static cmd cmd_host = { |
193 | &cmd_all, "host", sw_host, |
194 | "host ARCH\n\ |
195 | Display the name of a host supporting architecture ARCH.\n" |
196 | }; |
197 | static cmd cmd_listarch = { |
198 | &cmd_host, "listarch", sw_listarch, |
199 | "listarch\n\ |
200 | Display a list of all architectures known.\n" |
201 | }; |
202 | static cmd cmd_arch = { |
203 | &cmd_listarch, "arch", sw_arch, |
204 | "arch\tDisplay the architecture name of the current host.\n" |
205 | }; |
206 | # undef CMD_LINK |
207 | # define CMD_LINK &cmd_arch |
208 | #endif |
209 | |
210 | /*----- That's all, folks -------------------------------------------------*/ |
211 | |
212 | #ifdef __cplusplus |
213 | } |
214 | #endif |
215 | |
216 | #endif |