1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/* Main simulator entry points specific to the FRV.
Copyright (C) 1998-2015 Free Software Foundation, Inc.
Contributed by Red Hat.
This file is part of the GNU simulators.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#define WANT_CPU
#define WANT_CPU_FRVBF
#include "sim-main.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "sim-options.h"
#include "libiberty.h"
#include "bfd.h"
#include "elf-bfd.h"
static void free_state (SIM_DESC);
static void print_frv_misc_cpu (SIM_CPU *cpu, int verbose);
/* Records simulator descriptor so utilities like frv_dump_regs can be
called from gdb. */
SIM_DESC current_state;
/* Cover function of sim_state_free to free the cpu buffers as well. */
static void
free_state (SIM_DESC sd)
{
if (STATE_MODULES (sd) != NULL)
sim_module_uninstall (sd);
sim_cpu_free_all (sd);
sim_state_free (sd);
}
/* Create an instance of the simulator. */
SIM_DESC
sim_open (kind, callback, abfd, argv)
SIM_OPEN_KIND kind;
host_callback *callback;
bfd *abfd;
char **argv;
{
char c;
int i;
unsigned long elf_flags = 0;
SIM_DESC sd = sim_state_alloc (kind, callback);
/* The cpu data is kept in a separately allocated chunk of memory. */
if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
#if 0 /* FIXME: pc is in mach-specific struct */
/* FIXME: watchpoints code shouldn't need this */
{
SIM_CPU *current_cpu = STATE_CPU (sd, 0);
STATE_WATCHPOINTS (sd)->pc = &(PC);
STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
}
#endif
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
/* These options override any module options.
Obviously ambiguity should be avoided, however the caller may wish to
augment the meaning of an option. */
sim_add_option_table (sd, NULL, frv_options);
/* getopt will print the error message so we just have to exit if this fails.
FIXME: Hmmm... in the case of gdb we need getopt to call
print_filtered. */
if (sim_parse_args (sd, argv) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
/* Allocate core managed memory if none specified by user.
Use address 4 here in case the user wanted address 0 unmapped. */
if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0)
sim_do_commandf (sd, "memory region 0,0x%lx", FRV_DEFAULT_MEM_SIZE);
/* check for/establish the reference program image */
if (sim_analyze_program (sd,
(STATE_PROG_ARGV (sd) != NULL
? *STATE_PROG_ARGV (sd)
: NULL),
abfd) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
/* set machine and architecture correctly instead of defaulting to frv */
{
bfd *prog_bfd = STATE_PROG_BFD (sd);
if (prog_bfd != NULL)
{
struct elf_backend_data *backend_data;
if (bfd_get_arch (prog_bfd) != bfd_arch_frv)
{
sim_io_eprintf (sd, "%s: \"%s\" is not a FRV object file\n",
STATE_MY_NAME (sd),
bfd_get_filename (prog_bfd));
free_state (sd);
return 0;
}
backend_data = get_elf_backend_data (prog_bfd);
if (backend_data != NULL)
backend_data->elf_backend_object_p (prog_bfd);
elf_flags = elf_elfheader (prog_bfd)->e_flags;
}
}
/* Establish any remaining configuration options. */
if (sim_config (sd) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
if (sim_post_argv_init (sd) != SIM_RC_OK)
{
free_state (sd);
return 0;
}
/* Open a copy of the cpu descriptor table. */
{
CGEN_CPU_DESC cd = frv_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name,
CGEN_ENDIAN_BIG);
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU *cpu = STATE_CPU (sd, i);
CPU_CPU_DESC (cpu) = cd;
CPU_DISASSEMBLER (cpu) = sim_cgen_disassemble_insn;
CPU_ELF_FLAGS (cpu) = elf_flags;
}
frv_cgen_init_dis (cd);
}
/* Initialize various cgen things not done by common framework.
Must be done after frv_cgen_cpu_open. */
cgen_init (sd);
/* CPU specific initialization. */
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU* cpu = STATE_CPU (sd, i);
frv_initialize (cpu, sd);
}
/* Store in a global so things like sparc32_dump_regs can be invoked
from the gdb command line. */
current_state = sd;
return sd;
}
void
frv_sim_close (sd, quitting)
SIM_DESC sd;
int quitting;
{
int i;
/* Terminate cache support. */
for (i = 0; i < MAX_NR_PROCESSORS; ++i)
{
SIM_CPU* cpu = STATE_CPU (sd, i);
frv_cache_term (CPU_INSN_CACHE (cpu));
frv_cache_term (CPU_DATA_CACHE (cpu));
}
}
SIM_RC
sim_create_inferior (sd, abfd, argv, envp)
SIM_DESC sd;
bfd *abfd;
char **argv;
char **envp;
{
SIM_CPU *current_cpu = STATE_CPU (sd, 0);
SIM_ADDR addr;
if (abfd != NULL)
addr = bfd_get_start_address (abfd);
else
addr = 0;
sim_pc_set (current_cpu, addr);
/* Standalone mode (i.e. `run`) will take care of the argv for us in
sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim'
with `gdb`), we need to handle it because the user can change the
argv on the fly via gdb's 'run'. */
if (STATE_PROG_ARGV (sd) != argv)
{
freeargv (STATE_PROG_ARGV (sd));
STATE_PROG_ARGV (sd) = dupargv (argv);
}
return SIM_RC_OK;
}
|
