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edece237 | 1 | /* Main simulator entry points specific to the IQ2000. |
32d0add0 | 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
edece237 CV |
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 | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
edece237 CV |
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 | ||
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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/>. */ | |
edece237 CV |
19 | |
20 | #include "sim-main.h" | |
21 | #ifdef HAVE_STDLIB_H | |
22 | #include <stdlib.h> | |
23 | #endif | |
24 | #include "sim-options.h" | |
25 | #include "libiberty.h" | |
26 | #include "bfd.h" | |
27 | ||
28 | static void free_state (SIM_DESC); | |
29 | ||
30 | /* Records simulator descriptor so utilities like iq2000_dump_regs can be | |
31 | called from gdb. */ | |
32 | SIM_DESC current_state; | |
33 | \f | |
34 | /* Cover function for sim_cgen_disassemble_insn. */ | |
35 | ||
36 | void | |
37 | iq2000bf_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn, | |
38 | const ARGBUF *abuf, IADDR pc, char *buf) | |
39 | { | |
40 | sim_cgen_disassemble_insn(cpu, insn, abuf, pc, buf); | |
41 | } | |
42 | ||
43 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
44 | ||
45 | static void | |
46 | free_state (SIM_DESC sd) | |
47 | { | |
48 | if (STATE_MODULES (sd) != NULL) | |
49 | sim_module_uninstall (sd); | |
50 | sim_cpu_free_all (sd); | |
51 | sim_state_free (sd); | |
52 | } | |
53 | ||
54 | /* Create an instance of the simulator. */ | |
55 | ||
56 | SIM_DESC | |
57 | sim_open (kind, callback, abfd, argv) | |
58 | SIM_OPEN_KIND kind; | |
59 | host_callback *callback; | |
60 | struct bfd *abfd; | |
61 | char **argv; | |
62 | { | |
63 | char c; | |
64 | int i; | |
65 | SIM_DESC sd = sim_state_alloc (kind, callback); | |
66 | ||
67 | /* The cpu data is kept in a separately allocated chunk of memory. */ | |
68 | if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) | |
69 | { | |
70 | free_state (sd); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | #if 0 /* FIXME: pc is in mach-specific struct */ | |
75 | /* FIXME: watchpoints code shouldn't need this */ | |
76 | { | |
77 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
78 | STATE_WATCHPOINTS (sd)->pc = &(PC); | |
79 | STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); | |
80 | } | |
81 | #endif | |
82 | ||
83 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
84 | { | |
85 | free_state (sd); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | #if 0 /* FIXME: 'twould be nice if we could do this */ | |
90 | /* These options override any module options. | |
91 | Obviously ambiguity should be avoided, however the caller may wish to | |
92 | augment the meaning of an option. */ | |
93 | if (extra_options != NULL) | |
94 | sim_add_option_table (sd, extra_options); | |
95 | #endif | |
96 | ||
97 | /* getopt will print the error message so we just have to exit if this fails. | |
98 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
99 | print_filtered. */ | |
100 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
101 | { | |
102 | free_state (sd); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | /* Allocate core managed memory. */ | |
107 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_INSN_VALUE, IQ2000_INSN_MEM_SIZE); | |
108 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", IQ2000_DATA_VALUE, IQ2000_DATA_MEM_SIZE); | |
109 | ||
110 | /* check for/establish the reference program image */ | |
111 | if (sim_analyze_program (sd, | |
112 | (STATE_PROG_ARGV (sd) != NULL | |
113 | ? *STATE_PROG_ARGV (sd) | |
114 | : NULL), | |
115 | abfd) != SIM_RC_OK) | |
116 | { | |
117 | free_state (sd); | |
118 | return 0; | |
119 | } | |
120 | ||
121 | /* Establish any remaining configuration options. */ | |
122 | if (sim_config (sd) != SIM_RC_OK) | |
123 | { | |
124 | free_state (sd); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
129 | { | |
130 | free_state (sd); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | /* Open a copy of the cpu descriptor table. */ | |
135 | { | |
136 | CGEN_CPU_DESC cd = iq2000_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, | |
137 | CGEN_ENDIAN_BIG); | |
138 | ||
139 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
140 | { | |
141 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
142 | CPU_CPU_DESC (cpu) = cd; | |
143 | CPU_DISASSEMBLER (cpu) = iq2000bf_disassemble_insn; | |
144 | } | |
145 | iq2000_cgen_init_dis (cd); | |
146 | } | |
147 | ||
148 | /* Initialize various cgen things not done by common framework. | |
149 | Must be done after iq2000_cgen_cpu_open. */ | |
150 | cgen_init (sd); | |
151 | ||
152 | /* Store in a global so things like sparc32_dump_regs can be invoked | |
153 | from the gdb command line. */ | |
154 | current_state = sd; | |
155 | ||
156 | return sd; | |
157 | } | |
158 | ||
159 | void | |
160 | sim_close (sd, quitting) | |
161 | SIM_DESC sd; | |
162 | int quitting; | |
163 | { | |
164 | iq2000_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0))); | |
165 | sim_module_uninstall (sd); | |
166 | } | |
167 | \f | |
168 | SIM_RC | |
169 | sim_create_inferior (sd, abfd, argv, envp) | |
170 | SIM_DESC sd; | |
171 | struct bfd *abfd; | |
172 | char **argv; | |
173 | char **envp; | |
174 | { | |
175 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
176 | SIM_ADDR addr; | |
177 | ||
178 | if (abfd != NULL) | |
179 | addr = bfd_get_start_address (abfd); | |
180 | else | |
181 | addr = CPU2INSN(0); | |
182 | sim_pc_set (current_cpu, addr); | |
183 | ||
184 | #if 0 | |
185 | STATE_ARGV (sd) = sim_copy_argv (argv); | |
186 | STATE_ENVP (sd) = sim_copy_argv (envp); | |
187 | #endif | |
188 | ||
189 | return SIM_RC_OK; | |
190 | } |