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b34f6357 | 1 | /* Main simulator entry points specific to the FRV. |
213516ef | 2 | Copyright (C) 1998-2023 Free Software Foundation, Inc. |
b34f6357 DB |
3 | Contributed by Red Hat. |
4 | ||
5 | This file is part of the GNU simulators. | |
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. | |
b34f6357 DB |
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/>. */ | |
b34f6357 | 19 | |
6df01ab8 MF |
20 | /* This must come before any other includes. */ |
21 | #include "defs.h" | |
22 | ||
8cfc9a18 MF |
23 | #include <stdlib.h> |
24 | ||
25 | #include "sim/callback.h" | |
26 | ||
b34f6357 DB |
27 | #define WANT_CPU |
28 | #define WANT_CPU_FRVBF | |
29 | #include "sim-main.h" | |
b34f6357 DB |
30 | #include "sim-options.h" |
31 | #include "libiberty.h" | |
32 | #include "bfd.h" | |
33 | #include "elf-bfd.h" | |
34 | ||
35 | static void free_state (SIM_DESC); | |
b34f6357 DB |
36 | \f |
37 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
38 | ||
39 | static void | |
40 | free_state (SIM_DESC sd) | |
41 | { | |
42 | if (STATE_MODULES (sd) != NULL) | |
43 | sim_module_uninstall (sd); | |
44 | sim_cpu_free_all (sd); | |
45 | sim_state_free (sd); | |
46 | } | |
47 | ||
1c636da0 MF |
48 | extern const SIM_MACH * const frv_sim_machs[]; |
49 | ||
b34f6357 DB |
50 | /* Create an instance of the simulator. */ |
51 | ||
52 | SIM_DESC | |
81e6e8ae TT |
53 | sim_open (SIM_OPEN_KIND kind, host_callback *callback, bfd *abfd, |
54 | char * const *argv) | |
b34f6357 DB |
55 | { |
56 | char c; | |
57 | int i; | |
58 | unsigned long elf_flags = 0; | |
59 | SIM_DESC sd = sim_state_alloc (kind, callback); | |
60 | ||
ba307cdd | 61 | /* Set default options before parsing user options. */ |
1c636da0 | 62 | STATE_MACHS (sd) = frv_sim_machs; |
d414eb3e | 63 | STATE_MODEL_NAME (sd) = "fr500"; |
ba307cdd | 64 | current_alignment = STRICT_ALIGNMENT; |
f9a4d543 | 65 | current_target_byte_order = BFD_ENDIAN_BIG; |
ba307cdd | 66 | |
b34f6357 | 67 | /* The cpu data is kept in a separately allocated chunk of memory. */ |
883be197 | 68 | if (sim_cpu_alloc_all_extra (sd, 0, sizeof (struct frv_sim_cpu)) != SIM_RC_OK) |
b34f6357 DB |
69 | { |
70 | free_state (sd); | |
71 | return 0; | |
72 | } | |
73 | ||
b34f6357 DB |
74 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
75 | { | |
76 | free_state (sd); | |
77 | return 0; | |
78 | } | |
79 | ||
80 | /* These options override any module options. | |
81 | Obviously ambiguity should be avoided, however the caller may wish to | |
82 | augment the meaning of an option. */ | |
83 | sim_add_option_table (sd, NULL, frv_options); | |
84 | ||
77cf2ef5 | 85 | /* The parser will print an error message for us, so we silently return. */ |
b34f6357 DB |
86 | if (sim_parse_args (sd, argv) != SIM_RC_OK) |
87 | { | |
88 | free_state (sd); | |
89 | return 0; | |
90 | } | |
91 | ||
b34f6357 DB |
92 | /* Allocate core managed memory if none specified by user. |
93 | Use address 4 here in case the user wanted address 0 unmapped. */ | |
94 | if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) | |
2b83b958 | 95 | sim_do_commandf (sd, "memory region 0,0x%x", FRV_DEFAULT_MEM_SIZE); |
b34f6357 DB |
96 | |
97 | /* check for/establish the reference program image */ | |
e8f20a28 | 98 | if (sim_analyze_program (sd, STATE_PROG_FILE (sd), abfd) != SIM_RC_OK) |
b34f6357 DB |
99 | { |
100 | free_state (sd); | |
101 | return 0; | |
102 | } | |
103 | ||
104 | /* set machine and architecture correctly instead of defaulting to frv */ | |
105 | { | |
106 | bfd *prog_bfd = STATE_PROG_BFD (sd); | |
107 | if (prog_bfd != NULL) | |
108 | { | |
dd5ef931 | 109 | const struct elf_backend_data *backend_data; |
b34f6357 DB |
110 | |
111 | if (bfd_get_arch (prog_bfd) != bfd_arch_frv) | |
112 | { | |
113 | sim_io_eprintf (sd, "%s: \"%s\" is not a FRV object file\n", | |
114 | STATE_MY_NAME (sd), | |
115 | bfd_get_filename (prog_bfd)); | |
116 | free_state (sd); | |
117 | return 0; | |
118 | } | |
119 | ||
120 | backend_data = get_elf_backend_data (prog_bfd); | |
121 | ||
122 | if (backend_data != NULL) | |
123 | backend_data->elf_backend_object_p (prog_bfd); | |
124 | ||
125 | elf_flags = elf_elfheader (prog_bfd)->e_flags; | |
126 | } | |
127 | } | |
128 | ||
129 | /* Establish any remaining configuration options. */ | |
130 | if (sim_config (sd) != SIM_RC_OK) | |
131 | { | |
132 | free_state (sd); | |
133 | return 0; | |
134 | } | |
135 | ||
136 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
137 | { | |
138 | free_state (sd); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | /* Open a copy of the cpu descriptor table. */ | |
143 | { | |
144 | CGEN_CPU_DESC cd = frv_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, | |
145 | CGEN_ENDIAN_BIG); | |
146 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
147 | { | |
148 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
149 | CPU_CPU_DESC (cpu) = cd; | |
150 | CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn; | |
151 | CPU_ELF_FLAGS (cpu) = elf_flags; | |
152 | } | |
153 | frv_cgen_init_dis (cd); | |
154 | } | |
155 | ||
b34f6357 DB |
156 | /* CPU specific initialization. */ |
157 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
158 | { | |
159 | SIM_CPU* cpu = STATE_CPU (sd, i); | |
160 | frv_initialize (cpu, sd); | |
161 | } | |
162 | ||
b34f6357 DB |
163 | return sd; |
164 | } | |
165 | ||
166 | void | |
81e6e8ae | 167 | frv_sim_close (SIM_DESC sd, int quitting) |
b34f6357 DB |
168 | { |
169 | int i; | |
170 | /* Terminate cache support. */ | |
171 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
172 | { | |
173 | SIM_CPU* cpu = STATE_CPU (sd, i); | |
174 | frv_cache_term (CPU_INSN_CACHE (cpu)); | |
175 | frv_cache_term (CPU_DATA_CACHE (cpu)); | |
176 | } | |
b34f6357 DB |
177 | } |
178 | \f | |
179 | SIM_RC | |
81e6e8ae | 180 | sim_create_inferior (SIM_DESC sd, bfd *abfd, char * const *argv, |
54f7a83a | 181 | char * const *env) |
b34f6357 DB |
182 | { |
183 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
8cfc9a18 | 184 | host_callback *cb = STATE_CALLBACK (sd); |
20fea663 | 185 | bfd_vma addr; |
b34f6357 DB |
186 | |
187 | if (abfd != NULL) | |
188 | addr = bfd_get_start_address (abfd); | |
189 | else | |
190 | addr = 0; | |
191 | sim_pc_set (current_cpu, addr); | |
192 | ||
0e967299 MF |
193 | /* Standalone mode (i.e. `run`) will take care of the argv for us in |
194 | sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim' | |
195 | with `gdb`), we need to handle it because the user can change the | |
196 | argv on the fly via gdb's 'run'. */ | |
197 | if (STATE_PROG_ARGV (sd) != argv) | |
198 | { | |
199 | freeargv (STATE_PROG_ARGV (sd)); | |
200 | STATE_PROG_ARGV (sd) = dupargv (argv); | |
201 | } | |
b34f6357 | 202 | |
54f7a83a MF |
203 | if (STATE_PROG_ENVP (sd) != env) |
204 | { | |
205 | freeargv (STATE_PROG_ENVP (sd)); | |
206 | STATE_PROG_ENVP (sd) = dupargv (env); | |
207 | } | |
208 | ||
8cfc9a18 MF |
209 | cb->argv = STATE_PROG_ARGV (sd); |
210 | cb->envp = STATE_PROG_ENVP (sd); | |
211 | ||
b34f6357 DB |
212 | return SIM_RC_OK; |
213 | } |