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c906108c | 1 | /* Model support. |
3666a048 | 2 | Copyright (C) 1996-2021 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 | 19 | |
6df01ab8 MF |
20 | /* This must come before any other includes. */ |
21 | #include "defs.h" | |
22 | ||
c906108c | 23 | #include "sim-main.h" |
fd87baa9 | 24 | #include "sim-model.h" |
c906108c SS |
25 | #include "libiberty.h" |
26 | #include "sim-options.h" | |
27 | #include "sim-io.h" | |
28 | #include "sim-assert.h" | |
29 | #include "bfd.h" | |
30 | ||
8a0ebee6 | 31 | static void model_set (sim_cpu *, const SIM_MODEL *); |
c906108c SS |
32 | |
33 | static DECLARE_OPTION_HANDLER (model_option_handler); | |
34 | ||
35 | static MODULE_INIT_FN sim_model_init; | |
36 | ||
bd0bd508 MF |
37 | enum { |
38 | OPTION_MODEL = OPTION_START, | |
39 | OPTION_MODEL_INFO, | |
40 | }; | |
c906108c SS |
41 | |
42 | static const OPTION model_options[] = { | |
43 | { {"model", required_argument, NULL, OPTION_MODEL}, | |
44 | '\0', "MODEL", "Specify model to simulate", | |
21cf617c | 45 | model_option_handler, NULL }, |
bd0bd508 MF |
46 | |
47 | { {"model-info", no_argument, NULL, OPTION_MODEL_INFO}, | |
48 | '\0', NULL, "List selectable models", | |
49 | model_option_handler, NULL }, | |
50 | { {"info-model", no_argument, NULL, OPTION_MODEL_INFO}, | |
51 | '\0', NULL, NULL, | |
52 | model_option_handler, NULL }, | |
53 | ||
21cf617c | 54 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL, NULL } |
c906108c SS |
55 | }; |
56 | ||
57 | static SIM_RC | |
58 | model_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, | |
59 | char *arg, int is_command) | |
60 | { | |
61 | switch (opt) | |
62 | { | |
63 | case OPTION_MODEL : | |
64 | { | |
8a0ebee6 | 65 | const SIM_MODEL *model = sim_model_lookup (arg); |
c906108c SS |
66 | if (! model) |
67 | { | |
53a5351d | 68 | sim_io_eprintf (sd, "unknown model `%s'\n", arg); |
c906108c SS |
69 | return SIM_RC_FAIL; |
70 | } | |
71 | sim_model_set (sd, cpu, model); | |
72 | break; | |
73 | } | |
bd0bd508 MF |
74 | |
75 | case OPTION_MODEL_INFO : | |
76 | { | |
8a0ebee6 MF |
77 | const SIM_MACH **machp; |
78 | const SIM_MODEL *model; | |
bd0bd508 MF |
79 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) |
80 | { | |
81 | sim_io_printf (sd, "Models for architecture `%s':\n", | |
82 | MACH_NAME (*machp)); | |
83 | for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; | |
84 | ++model) | |
85 | sim_io_printf (sd, " %s", MODEL_NAME (model)); | |
86 | sim_io_printf (sd, "\n"); | |
87 | } | |
88 | break; | |
89 | } | |
c906108c SS |
90 | } |
91 | ||
92 | return SIM_RC_OK; | |
93 | } | |
94 | ||
95 | SIM_RC | |
96 | sim_model_install (SIM_DESC sd) | |
97 | { | |
98 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
99 | ||
100 | sim_add_option_table (sd, NULL, model_options); | |
101 | sim_module_add_init_fn (sd, sim_model_init); | |
102 | ||
103 | return SIM_RC_OK; | |
104 | } | |
105 | ||
106 | /* Subroutine of sim_model_set to set the model for one cpu. */ | |
107 | ||
108 | static void | |
8a0ebee6 | 109 | model_set (sim_cpu *cpu, const SIM_MODEL *model) |
c906108c SS |
110 | { |
111 | CPU_MACH (cpu) = MODEL_MACH (model); | |
112 | CPU_MODEL (cpu) = model; | |
113 | (* MACH_INIT_CPU (MODEL_MACH (model))) (cpu); | |
114 | (* MODEL_INIT (model)) (cpu); | |
115 | } | |
116 | ||
117 | /* Set the current model of CPU to MODEL. | |
118 | If CPU is NULL, all cpus are set to MODEL. */ | |
119 | ||
120 | void | |
8a0ebee6 | 121 | sim_model_set (SIM_DESC sd, sim_cpu *cpu, const SIM_MODEL *model) |
c906108c SS |
122 | { |
123 | if (! cpu) | |
124 | { | |
125 | int c; | |
126 | ||
127 | for (c = 0; c < MAX_NR_PROCESSORS; ++c) | |
128 | if (STATE_CPU (sd, c)) | |
129 | model_set (STATE_CPU (sd, c), model); | |
130 | } | |
131 | else | |
132 | { | |
133 | model_set (cpu, model); | |
134 | } | |
135 | } | |
136 | ||
137 | /* Look up model named NAME. | |
138 | Result is pointer to MODEL entry or NULL if not found. */ | |
139 | ||
8a0ebee6 | 140 | const SIM_MODEL * |
c906108c SS |
141 | sim_model_lookup (const char *name) |
142 | { | |
8a0ebee6 MF |
143 | const SIM_MACH **machp; |
144 | const SIM_MODEL *model; | |
c906108c SS |
145 | |
146 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
147 | { | |
148 | for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; ++model) | |
149 | { | |
150 | if (strcmp (MODEL_NAME (model), name) == 0) | |
151 | return model; | |
152 | } | |
153 | } | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | /* Look up machine named NAME. | |
158 | Result is pointer to MACH entry or NULL if not found. */ | |
159 | ||
8a0ebee6 | 160 | const SIM_MACH * |
c906108c SS |
161 | sim_mach_lookup (const char *name) |
162 | { | |
8a0ebee6 | 163 | const SIM_MACH **machp; |
c906108c SS |
164 | |
165 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
166 | { | |
167 | if (strcmp (MACH_NAME (*machp), name) == 0) | |
168 | return *machp; | |
169 | } | |
170 | return NULL; | |
171 | } | |
172 | ||
173 | /* Look up a machine via its bfd name. | |
174 | Result is pointer to MACH entry or NULL if not found. */ | |
175 | ||
8a0ebee6 | 176 | const SIM_MACH * |
c906108c SS |
177 | sim_mach_lookup_bfd_name (const char *name) |
178 | { | |
8a0ebee6 | 179 | const SIM_MACH **machp; |
c906108c SS |
180 | |
181 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
182 | { | |
183 | if (strcmp (MACH_BFD_NAME (*machp), name) == 0) | |
184 | return *machp; | |
185 | } | |
186 | return NULL; | |
187 | } | |
188 | ||
189 | /* Initialize model support. */ | |
190 | ||
191 | static SIM_RC | |
192 | sim_model_init (SIM_DESC sd) | |
193 | { | |
194 | SIM_CPU *cpu; | |
195 | ||
0d585950 MF |
196 | if (!WITH_MODEL_P) |
197 | return SIM_RC_OK; | |
198 | ||
c906108c SS |
199 | /* If both cpu model and state architecture are set, ensure they're |
200 | compatible. If only one is set, set the other. If neither are set, | |
201 | use the default model. STATE_ARCHITECTURE is the bfd_arch_info data | |
202 | for the selected "mach" (bfd terminology). */ | |
203 | ||
204 | /* Only check cpu 0. STATE_ARCHITECTURE is for that one only. */ | |
205 | /* ??? At present this only supports homogeneous multiprocessors. */ | |
206 | cpu = STATE_CPU (sd, 0); | |
207 | ||
208 | if (! STATE_ARCHITECTURE (sd) | |
209 | && ! CPU_MACH (cpu)) | |
210 | { | |
211 | /* Set the default model. */ | |
8a0ebee6 | 212 | const SIM_MODEL *model = sim_model_lookup (WITH_DEFAULT_MODEL); |
ccd4b295 | 213 | SIM_ASSERT (model != NULL); |
c906108c SS |
214 | sim_model_set (sd, NULL, model); |
215 | } | |
216 | ||
217 | if (STATE_ARCHITECTURE (sd) | |
218 | && CPU_MACH (cpu)) | |
219 | { | |
220 | if (strcmp (STATE_ARCHITECTURE (sd)->printable_name, | |
221 | MACH_BFD_NAME (CPU_MACH (cpu))) != 0) | |
222 | { | |
223 | sim_io_eprintf (sd, "invalid model `%s' for `%s'\n", | |
224 | MODEL_NAME (CPU_MODEL (cpu)), | |
225 | STATE_ARCHITECTURE (sd)->printable_name); | |
226 | return SIM_RC_FAIL; | |
227 | } | |
228 | } | |
229 | else if (STATE_ARCHITECTURE (sd)) | |
230 | { | |
231 | /* Use the default model for the selected machine. | |
232 | The default model is the first one in the list. */ | |
8a0ebee6 | 233 | const SIM_MACH *mach = sim_mach_lookup_bfd_name (STATE_ARCHITECTURE (sd)->printable_name); |
9846de1b JM |
234 | |
235 | if (mach == NULL) | |
236 | { | |
237 | sim_io_eprintf (sd, "unsupported machine `%s'\n", | |
238 | STATE_ARCHITECTURE (sd)->printable_name); | |
239 | return SIM_RC_FAIL; | |
240 | } | |
c906108c SS |
241 | sim_model_set (sd, NULL, MACH_MODELS (mach)); |
242 | } | |
243 | else | |
244 | { | |
245 | STATE_ARCHITECTURE (sd) = bfd_scan_arch (MACH_BFD_NAME (CPU_MACH (cpu))); | |
246 | } | |
247 | ||
248 | return SIM_RC_OK; | |
249 | } | |
0d585950 MF |
250 | \f |
251 | #if !WITH_MODEL_P | |
252 | /* Set up basic model support. This is a stub for ports that do not define | |
253 | models. See sim-model.h for more details. */ | |
254 | const SIM_MACH *sim_machs[] = | |
255 | { | |
256 | NULL | |
257 | }; | |
258 | #endif |