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c906108c SS |
1 | /* Main simulator entry points specific to the FR30. |
2 | Copyright (C) 1998, 1999 Free Software Foundation, Inc. | |
3 | Contributed by Cygnus Solutions. | |
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 | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
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 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with this program; if not, write to the Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "sim-main.h" | |
22 | #ifdef HAVE_STDLIB_H | |
23 | #include <stdlib.h> | |
24 | #endif | |
25 | #include "sim-options.h" | |
26 | #include "libiberty.h" | |
27 | #include "bfd.h" | |
28 | ||
29 | static void free_state (SIM_DESC); | |
30 | static void print_fr30_misc_cpu (SIM_CPU *cpu, int verbose); | |
31 | ||
32 | /* Records simulator descriptor so utilities like fr30_dump_regs can be | |
33 | called from gdb. */ | |
34 | SIM_DESC current_state; | |
35 | \f | |
36 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
37 | ||
38 | static void | |
39 | free_state (SIM_DESC sd) | |
40 | { | |
41 | if (STATE_MODULES (sd) != NULL) | |
42 | sim_module_uninstall (sd); | |
43 | sim_cpu_free_all (sd); | |
44 | sim_state_free (sd); | |
45 | } | |
46 | ||
47 | /* Create an instance of the simulator. */ | |
48 | ||
49 | SIM_DESC | |
50 | sim_open (kind, callback, abfd, argv) | |
51 | SIM_OPEN_KIND kind; | |
52 | host_callback *callback; | |
53 | struct _bfd *abfd; | |
54 | char **argv; | |
55 | { | |
56 | char c; | |
57 | int i; | |
58 | SIM_DESC sd = sim_state_alloc (kind, callback); | |
59 | ||
60 | /* The cpu data is kept in a separately allocated chunk of memory. */ | |
61 | if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) | |
62 | { | |
63 | free_state (sd); | |
64 | return 0; | |
65 | } | |
66 | ||
67 | #if 0 /* FIXME: pc is in mach-specific struct */ | |
68 | /* FIXME: watchpoints code shouldn't need this */ | |
69 | { | |
70 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
71 | STATE_WATCHPOINTS (sd)->pc = &(PC); | |
72 | STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); | |
73 | } | |
74 | #endif | |
75 | ||
76 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
77 | { | |
78 | free_state (sd); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | #if 0 /* FIXME: 'twould be nice if we could do this */ | |
83 | /* These options override any module options. | |
84 | Obviously ambiguity should be avoided, however the caller may wish to | |
85 | augment the meaning of an option. */ | |
86 | if (extra_options != NULL) | |
87 | sim_add_option_table (sd, extra_options); | |
88 | #endif | |
89 | ||
90 | /* getopt will print the error message so we just have to exit if this fails. | |
91 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
92 | print_filtered. */ | |
93 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
94 | { | |
95 | free_state (sd); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | #if 0 | |
100 | /* Allocate a handler for the control registers and other devices | |
101 | if no memory for that range has been allocated by the user. | |
102 | All are allocated in one chunk to keep things from being | |
103 | unnecessarily complicated. */ | |
104 | if (sim_core_read_buffer (sd, NULL, read_map, &c, FR30_DEVICE_ADDR, 1) == 0) | |
105 | sim_core_attach (sd, NULL, | |
106 | 0 /*level*/, | |
107 | access_read_write, | |
108 | 0 /*space ???*/, | |
109 | FR30_DEVICE_ADDR, FR30_DEVICE_LEN /*nr_bytes*/, | |
110 | 0 /*modulo*/, | |
111 | &fr30_devices, | |
112 | NULL /*buffer*/); | |
113 | #endif | |
114 | ||
115 | /* Allocate core managed memory if none specified by user. | |
116 | Use address 4 here in case the user wanted address 0 unmapped. */ | |
117 | if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) | |
118 | sim_do_commandf (sd, "memory region 0,0x%lx", FR30_DEFAULT_MEM_SIZE); | |
119 | ||
120 | /* check for/establish the reference program image */ | |
121 | if (sim_analyze_program (sd, | |
122 | (STATE_PROG_ARGV (sd) != NULL | |
123 | ? *STATE_PROG_ARGV (sd) | |
124 | : NULL), | |
125 | abfd) != SIM_RC_OK) | |
126 | { | |
127 | free_state (sd); | |
128 | return 0; | |
129 | } | |
130 | ||
131 | /* Establish any remaining configuration options. */ | |
132 | if (sim_config (sd) != SIM_RC_OK) | |
133 | { | |
134 | free_state (sd); | |
135 | return 0; | |
136 | } | |
137 | ||
138 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
139 | { | |
140 | free_state (sd); | |
141 | return 0; | |
142 | } | |
143 | ||
144 | /* Open a copy of the cpu descriptor table. */ | |
145 | { | |
7a292a7a SS |
146 | CGEN_CPU_DESC cd = fr30_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, |
147 | CGEN_ENDIAN_BIG); | |
c906108c SS |
148 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) |
149 | { | |
150 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
151 | CPU_CPU_DESC (cpu) = cd; | |
152 | CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn; | |
153 | } | |
154 | fr30_cgen_init_dis (cd); | |
155 | } | |
156 | ||
157 | /* Initialize various cgen things not done by common framework. | |
158 | Must be done after fr30_cgen_cpu_open. */ | |
159 | cgen_init (sd); | |
160 | ||
161 | /* Store in a global so things like sparc32_dump_regs can be invoked | |
162 | from the gdb command line. */ | |
163 | current_state = sd; | |
164 | ||
165 | return sd; | |
166 | } | |
167 | ||
168 | void | |
169 | sim_close (sd, quitting) | |
170 | SIM_DESC sd; | |
171 | int quitting; | |
172 | { | |
173 | fr30_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0))); | |
174 | sim_module_uninstall (sd); | |
175 | } | |
176 | \f | |
177 | SIM_RC | |
178 | sim_create_inferior (sd, abfd, argv, envp) | |
179 | SIM_DESC sd; | |
180 | struct _bfd *abfd; | |
181 | char **argv; | |
182 | char **envp; | |
183 | { | |
184 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
185 | SIM_ADDR addr; | |
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 | ||
193 | #if 0 | |
194 | STATE_ARGV (sd) = sim_copy_argv (argv); | |
195 | STATE_ENVP (sd) = sim_copy_argv (envp); | |
196 | #endif | |
197 | ||
198 | return SIM_RC_OK; | |
199 | } | |
200 | ||
201 | void | |
202 | sim_do_command (sd, cmd) | |
203 | SIM_DESC sd; | |
204 | char *cmd; | |
205 | { | |
206 | if (sim_args_command (sd, cmd) != SIM_RC_OK) | |
207 | sim_io_eprintf (sd, "Unknown command `%s'\n", cmd); | |
208 | } |