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c906108c | 1 | /* Model support. |
9b254dd1 | 2 | Copyright (C) 1996, 1997, 1998, 2007, 2008 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" | |
21 | #include "libiberty.h" | |
22 | #include "sim-options.h" | |
23 | #include "sim-io.h" | |
24 | #include "sim-assert.h" | |
25 | #include "bfd.h" | |
26 | ||
27 | static void model_set (sim_cpu *, const MODEL *); | |
28 | ||
29 | static DECLARE_OPTION_HANDLER (model_option_handler); | |
30 | ||
31 | static MODULE_INIT_FN sim_model_init; | |
32 | ||
33 | #define OPTION_MODEL (OPTION_START + 0) | |
34 | ||
35 | static const OPTION model_options[] = { | |
36 | { {"model", required_argument, NULL, OPTION_MODEL}, | |
37 | '\0', "MODEL", "Specify model to simulate", | |
38 | model_option_handler }, | |
39 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } | |
40 | }; | |
41 | ||
42 | static SIM_RC | |
43 | model_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, | |
44 | char *arg, int is_command) | |
45 | { | |
46 | switch (opt) | |
47 | { | |
48 | case OPTION_MODEL : | |
49 | { | |
50 | const MODEL *model = sim_model_lookup (arg); | |
51 | if (! model) | |
52 | { | |
53a5351d | 53 | sim_io_eprintf (sd, "unknown model `%s'\n", arg); |
c906108c SS |
54 | return SIM_RC_FAIL; |
55 | } | |
56 | sim_model_set (sd, cpu, model); | |
57 | break; | |
58 | } | |
59 | } | |
60 | ||
61 | return SIM_RC_OK; | |
62 | } | |
63 | ||
64 | SIM_RC | |
65 | sim_model_install (SIM_DESC sd) | |
66 | { | |
67 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
68 | ||
69 | sim_add_option_table (sd, NULL, model_options); | |
70 | sim_module_add_init_fn (sd, sim_model_init); | |
71 | ||
72 | return SIM_RC_OK; | |
73 | } | |
74 | ||
75 | /* Subroutine of sim_model_set to set the model for one cpu. */ | |
76 | ||
77 | static void | |
78 | model_set (sim_cpu *cpu, const MODEL *model) | |
79 | { | |
80 | CPU_MACH (cpu) = MODEL_MACH (model); | |
81 | CPU_MODEL (cpu) = model; | |
82 | (* MACH_INIT_CPU (MODEL_MACH (model))) (cpu); | |
83 | (* MODEL_INIT (model)) (cpu); | |
84 | } | |
85 | ||
86 | /* Set the current model of CPU to MODEL. | |
87 | If CPU is NULL, all cpus are set to MODEL. */ | |
88 | ||
89 | void | |
90 | sim_model_set (SIM_DESC sd, sim_cpu *cpu, const MODEL *model) | |
91 | { | |
92 | if (! cpu) | |
93 | { | |
94 | int c; | |
95 | ||
96 | for (c = 0; c < MAX_NR_PROCESSORS; ++c) | |
97 | if (STATE_CPU (sd, c)) | |
98 | model_set (STATE_CPU (sd, c), model); | |
99 | } | |
100 | else | |
101 | { | |
102 | model_set (cpu, model); | |
103 | } | |
104 | } | |
105 | ||
106 | /* Look up model named NAME. | |
107 | Result is pointer to MODEL entry or NULL if not found. */ | |
108 | ||
109 | const MODEL * | |
110 | sim_model_lookup (const char *name) | |
111 | { | |
112 | const MACH **machp; | |
113 | const MODEL *model; | |
114 | ||
115 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
116 | { | |
117 | for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; ++model) | |
118 | { | |
119 | if (strcmp (MODEL_NAME (model), name) == 0) | |
120 | return model; | |
121 | } | |
122 | } | |
123 | return NULL; | |
124 | } | |
125 | ||
126 | /* Look up machine named NAME. | |
127 | Result is pointer to MACH entry or NULL if not found. */ | |
128 | ||
129 | const MACH * | |
130 | sim_mach_lookup (const char *name) | |
131 | { | |
132 | const MACH **machp; | |
133 | ||
134 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
135 | { | |
136 | if (strcmp (MACH_NAME (*machp), name) == 0) | |
137 | return *machp; | |
138 | } | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | /* Look up a machine via its bfd name. | |
143 | Result is pointer to MACH entry or NULL if not found. */ | |
144 | ||
145 | const MACH * | |
146 | sim_mach_lookup_bfd_name (const char *name) | |
147 | { | |
148 | const MACH **machp; | |
149 | ||
150 | for (machp = & sim_machs[0]; *machp != NULL; ++machp) | |
151 | { | |
152 | if (strcmp (MACH_BFD_NAME (*machp), name) == 0) | |
153 | return *machp; | |
154 | } | |
155 | return NULL; | |
156 | } | |
157 | ||
158 | /* Initialize model support. */ | |
159 | ||
160 | static SIM_RC | |
161 | sim_model_init (SIM_DESC sd) | |
162 | { | |
163 | SIM_CPU *cpu; | |
164 | ||
165 | /* If both cpu model and state architecture are set, ensure they're | |
166 | compatible. If only one is set, set the other. If neither are set, | |
167 | use the default model. STATE_ARCHITECTURE is the bfd_arch_info data | |
168 | for the selected "mach" (bfd terminology). */ | |
169 | ||
170 | /* Only check cpu 0. STATE_ARCHITECTURE is for that one only. */ | |
171 | /* ??? At present this only supports homogeneous multiprocessors. */ | |
172 | cpu = STATE_CPU (sd, 0); | |
173 | ||
174 | if (! STATE_ARCHITECTURE (sd) | |
175 | && ! CPU_MACH (cpu)) | |
176 | { | |
177 | /* Set the default model. */ | |
178 | const MODEL *model = sim_model_lookup (WITH_DEFAULT_MODEL); | |
179 | sim_model_set (sd, NULL, model); | |
180 | } | |
181 | ||
182 | if (STATE_ARCHITECTURE (sd) | |
183 | && CPU_MACH (cpu)) | |
184 | { | |
185 | if (strcmp (STATE_ARCHITECTURE (sd)->printable_name, | |
186 | MACH_BFD_NAME (CPU_MACH (cpu))) != 0) | |
187 | { | |
188 | sim_io_eprintf (sd, "invalid model `%s' for `%s'\n", | |
189 | MODEL_NAME (CPU_MODEL (cpu)), | |
190 | STATE_ARCHITECTURE (sd)->printable_name); | |
191 | return SIM_RC_FAIL; | |
192 | } | |
193 | } | |
194 | else if (STATE_ARCHITECTURE (sd)) | |
195 | { | |
196 | /* Use the default model for the selected machine. | |
197 | The default model is the first one in the list. */ | |
198 | const MACH *mach = sim_mach_lookup_bfd_name (STATE_ARCHITECTURE (sd)->printable_name); | |
9846de1b JM |
199 | |
200 | if (mach == NULL) | |
201 | { | |
202 | sim_io_eprintf (sd, "unsupported machine `%s'\n", | |
203 | STATE_ARCHITECTURE (sd)->printable_name); | |
204 | return SIM_RC_FAIL; | |
205 | } | |
c906108c SS |
206 | sim_model_set (sd, NULL, MACH_MODELS (mach)); |
207 | } | |
208 | else | |
209 | { | |
210 | STATE_ARCHITECTURE (sd) = bfd_scan_arch (MACH_BFD_NAME (CPU_MACH (cpu))); | |
211 | } | |
212 | ||
213 | return SIM_RC_OK; | |
214 | } |