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c906108c | 1 | /* Model support. |
618f726f | 2 | Copyright (C) 1996-2016 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
c906108c SS |
11 | |
12 | This program 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 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
19 | |
20 | #include "sim-main.h" | |
fd87baa9 | 21 | #include "sim-model.h" |
c906108c SS |
22 | #include "libiberty.h" |
23 | #include "sim-options.h" | |
24 | #include "sim-io.h" | |
25 | #include "sim-assert.h" | |
26 | #include "bfd.h" | |
27 | ||
8a0ebee6 | 28 | static void model_set (sim_cpu *, const SIM_MODEL *); |
c906108c SS |
29 | |
30 | static DECLARE_OPTION_HANDLER (model_option_handler); | |
31 | ||
32 | static MODULE_INIT_FN sim_model_init; | |
33 | ||
bd0bd508 MF |
34 | enum { |
35 | OPTION_MODEL = OPTION_START, | |
36 | OPTION_MODEL_INFO, | |
37 | }; | |
c906108c SS |
38 | |
39 | static const OPTION model_options[] = { | |
40 | { {"model", required_argument, NULL, OPTION_MODEL}, | |
41 | '\0', "MODEL", "Specify model to simulate", | |
21cf617c | 42 | model_option_handler, NULL }, |
bd0bd508 MF |
43 | |
44 | { {"model-info", no_argument, NULL, OPTION_MODEL_INFO}, | |
45 | '\0', NULL, "List selectable models", | |
46 | model_option_handler, NULL }, | |
47 | { {"info-model", no_argument, NULL, OPTION_MODEL_INFO}, | |
48 | '\0', NULL, NULL, | |
49 | model_option_handler, NULL }, | |
50 | ||
21cf617c | 51 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL, NULL } |
c906108c SS |
52 | }; |
53 | ||
54 | static SIM_RC | |
55 | model_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, | |
56 | char *arg, int is_command) | |
57 | { | |
58 | switch (opt) | |
59 | { | |
60 | case OPTION_MODEL : | |
61 | { | |
8a0ebee6 | 62 | const SIM_MODEL *model = sim_model_lookup (arg); |
c906108c SS |
63 | if (! model) |
64 | { | |
53a5351d | 65 | sim_io_eprintf (sd, "unknown model `%s'\n", arg); |
c906108c SS |
66 | return SIM_RC_FAIL; |
67 | } | |
68 | sim_model_set (sd, cpu, model); | |
69 | break; | |
70 | } | |
bd0bd508 MF |
71 | |
72 | case OPTION_MODEL_INFO : | |
73 | { | |
8a0ebee6 MF |
74 | const SIM_MACH **machp; |
75 | const SIM_MODEL *model; | |
bd0bd508 MF |
76 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) |
77 | { | |
78 | sim_io_printf (sd, "Models for architecture `%s':\n", | |
79 | MACH_NAME (*machp)); | |
80 | for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; | |
81 | ++model) | |
82 | sim_io_printf (sd, " %s", MODEL_NAME (model)); | |
83 | sim_io_printf (sd, "\n"); | |
84 | } | |
85 | break; | |
86 | } | |
c906108c SS |
87 | } |
88 | ||
89 | return SIM_RC_OK; | |
90 | } | |
91 | ||
92 | SIM_RC | |
93 | sim_model_install (SIM_DESC sd) | |
94 | { | |
95 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
96 | ||
97 | sim_add_option_table (sd, NULL, model_options); | |
98 | sim_module_add_init_fn (sd, sim_model_init); | |
99 | ||
100 | return SIM_RC_OK; | |
101 | } | |
102 | ||
103 | /* Subroutine of sim_model_set to set the model for one cpu. */ | |
104 | ||
105 | static void | |
8a0ebee6 | 106 | model_set (sim_cpu *cpu, const SIM_MODEL *model) |
c906108c SS |
107 | { |
108 | CPU_MACH (cpu) = MODEL_MACH (model); | |
109 | CPU_MODEL (cpu) = model; | |
110 | (* MACH_INIT_CPU (MODEL_MACH (model))) (cpu); | |
111 | (* MODEL_INIT (model)) (cpu); | |
112 | } | |
113 | ||
114 | /* Set the current model of CPU to MODEL. | |
115 | If CPU is NULL, all cpus are set to MODEL. */ | |
116 | ||
117 | void | |
8a0ebee6 | 118 | sim_model_set (SIM_DESC sd, sim_cpu *cpu, const SIM_MODEL *model) |
c906108c SS |
119 | { |
120 | if (! cpu) | |
121 | { | |
122 | int c; | |
123 | ||
124 | for (c = 0; c < MAX_NR_PROCESSORS; ++c) | |
125 | if (STATE_CPU (sd, c)) | |
126 | model_set (STATE_CPU (sd, c), model); | |
127 | } | |
128 | else | |
129 | { | |
130 | model_set (cpu, model); | |
131 | } | |
132 | } | |
133 | ||
134 | /* Look up model named NAME. | |
135 | Result is pointer to MODEL entry or NULL if not found. */ | |
136 | ||
8a0ebee6 | 137 | const SIM_MODEL * |
c906108c SS |
138 | sim_model_lookup (const char *name) |
139 | { | |
8a0ebee6 MF |
140 | const SIM_MACH **machp; |
141 | const SIM_MODEL *model; | |
c906108c SS |
142 | |
143 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
144 | { | |
145 | for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; ++model) | |
146 | { | |
147 | if (strcmp (MODEL_NAME (model), name) == 0) | |
148 | return model; | |
149 | } | |
150 | } | |
151 | return NULL; | |
152 | } | |
153 | ||
154 | /* Look up machine named NAME. | |
155 | Result is pointer to MACH entry or NULL if not found. */ | |
156 | ||
8a0ebee6 | 157 | const SIM_MACH * |
c906108c SS |
158 | sim_mach_lookup (const char *name) |
159 | { | |
8a0ebee6 | 160 | const SIM_MACH **machp; |
c906108c SS |
161 | |
162 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
163 | { | |
164 | if (strcmp (MACH_NAME (*machp), name) == 0) | |
165 | return *machp; | |
166 | } | |
167 | return NULL; | |
168 | } | |
169 | ||
170 | /* Look up a machine via its bfd name. | |
171 | Result is pointer to MACH entry or NULL if not found. */ | |
172 | ||
8a0ebee6 | 173 | const SIM_MACH * |
c906108c SS |
174 | sim_mach_lookup_bfd_name (const char *name) |
175 | { | |
8a0ebee6 | 176 | const SIM_MACH **machp; |
c906108c SS |
177 | |
178 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
179 | { | |
180 | if (strcmp (MACH_BFD_NAME (*machp), name) == 0) | |
181 | return *machp; | |
182 | } | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | /* Initialize model support. */ | |
187 | ||
188 | static SIM_RC | |
189 | sim_model_init (SIM_DESC sd) | |
190 | { | |
191 | SIM_CPU *cpu; | |
192 | ||
0d585950 MF |
193 | if (!WITH_MODEL_P) |
194 | return SIM_RC_OK; | |
195 | ||
c906108c SS |
196 | /* If both cpu model and state architecture are set, ensure they're |
197 | compatible. If only one is set, set the other. If neither are set, | |
198 | use the default model. STATE_ARCHITECTURE is the bfd_arch_info data | |
199 | for the selected "mach" (bfd terminology). */ | |
200 | ||
201 | /* Only check cpu 0. STATE_ARCHITECTURE is for that one only. */ | |
202 | /* ??? At present this only supports homogeneous multiprocessors. */ | |
203 | cpu = STATE_CPU (sd, 0); | |
204 | ||
205 | if (! STATE_ARCHITECTURE (sd) | |
206 | && ! CPU_MACH (cpu)) | |
207 | { | |
208 | /* Set the default model. */ | |
8a0ebee6 | 209 | const SIM_MODEL *model = sim_model_lookup (WITH_DEFAULT_MODEL); |
ccd4b295 | 210 | SIM_ASSERT (model != NULL); |
c906108c SS |
211 | sim_model_set (sd, NULL, model); |
212 | } | |
213 | ||
214 | if (STATE_ARCHITECTURE (sd) | |
215 | && CPU_MACH (cpu)) | |
216 | { | |
217 | if (strcmp (STATE_ARCHITECTURE (sd)->printable_name, | |
218 | MACH_BFD_NAME (CPU_MACH (cpu))) != 0) | |
219 | { | |
220 | sim_io_eprintf (sd, "invalid model `%s' for `%s'\n", | |
221 | MODEL_NAME (CPU_MODEL (cpu)), | |
222 | STATE_ARCHITECTURE (sd)->printable_name); | |
223 | return SIM_RC_FAIL; | |
224 | } | |
225 | } | |
226 | else if (STATE_ARCHITECTURE (sd)) | |
227 | { | |
228 | /* Use the default model for the selected machine. | |
229 | The default model is the first one in the list. */ | |
8a0ebee6 | 230 | const SIM_MACH *mach = sim_mach_lookup_bfd_name (STATE_ARCHITECTURE (sd)->printable_name); |
9846de1b JM |
231 | |
232 | if (mach == NULL) | |
233 | { | |
234 | sim_io_eprintf (sd, "unsupported machine `%s'\n", | |
235 | STATE_ARCHITECTURE (sd)->printable_name); | |
236 | return SIM_RC_FAIL; | |
237 | } | |
c906108c SS |
238 | sim_model_set (sd, NULL, MACH_MODELS (mach)); |
239 | } | |
240 | else | |
241 | { | |
242 | STATE_ARCHITECTURE (sd) = bfd_scan_arch (MACH_BFD_NAME (CPU_MACH (cpu))); | |
243 | } | |
244 | ||
245 | return SIM_RC_OK; | |
246 | } | |
0d585950 MF |
247 | \f |
248 | #if !WITH_MODEL_P | |
249 | /* Set up basic model support. This is a stub for ports that do not define | |
250 | models. See sim-model.h for more details. */ | |
251 | const SIM_MACH *sim_machs[] = | |
252 | { | |
253 | NULL | |
254 | }; | |
255 | #endif |