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
|
/* Remote debugging interface to Xilinx MicroBlaze.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
This file is part of GDB.
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/>. */
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
#include "monitor.h"
#include "gdb_string.h"
#include "serial.h"
#include "regcache.h"
void _initialize_picobug_rom (void);
static char *picobug_inits[] =
{"\r", NULL};
static struct target_ops picobug_ops;
static struct monitor_ops picobug_cmds;
/* Picobug only supports a subset of registers from MCore. In reality,
it doesn't support ss1, either. */
static char *picobug_regnames[] = {
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
"psr", "vbr", "epsr", "fpsr", "epc", "fpc", 0, "ss1",
"ss2", "ss3", "ss4", 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
"pc" };
static void
picobug_open (char *args, int from_tty)
{
monitor_open (args, &picobug_cmds, from_tty);
}
/* We choose to write our own dumpregs routine, since the output of
the register dumping is rather difficult to encapsulate in a
regexp:
picobug> rd
pc 2f00031e epc 2f00031e fpc 00000000
psr 80000101 epsr 80000101 fpsr 00000000
ss0-ss4 bad0beef 00000000 00000000 00000000 00000000 vbr 30005c00
r0-r7 2f0fff4c 00000090 00000001 00000002 00000003 00000004 00000005 00000006
r8-r15 2f0fff64 00000000 00000000 00000000 00000000 00000000 00000000 2f00031e
*/
static int
picobug_dumpregs (struct regcache *regcache)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
char buf[1024];
int resp_len;
char *p;
/* Send the dump register command to the monitor and
get the reply. */
monitor_printf (picobug_cmds.dump_registers);
resp_len = monitor_expect_prompt (buf, sizeof (buf));
p = strtok (buf, " \t\r\n");
while (p)
{
if (strchr (p, '-'))
{
/* Got a range. Either r0-r7, r8-r15 or ss0-ss4. */
if (strncmp (p, "r0", 2) == 0 || strncmp (p, "r8", 2) == 0)
{
int rn = (p[1] == '0' ? 0 : 8);
int i = 0;
/* Get the next 8 values and record them. */
while (i < 8)
{
p = strtok (NULL, " \t\r\n");
if (p)
monitor_supply_register (regcache, rn + i, p);
i++;
}
}
else if (strncmp (p, "ss", 2) == 0)
{
/* Get the next five values, ignoring the first. */
int rn;
p = strtok (NULL, " \t\r\n");
for (rn = 39; rn < 43; rn++)
{
p = strtok (NULL, " \t\r\n");
if (p)
monitor_supply_register (regcache, rn, p);
}
}
else
{
break;
}
}
else
{
/* Simple register type, paired. */
char *name = p;
int i;
/* Get and record value. */
p = strtok (NULL, " \t\r\n");
if (p)
{
for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
{
if (picobug_regnames[i]
&& strcmp (picobug_regnames[i], name) == 0)
break;
}
if (i <= gdbarch_num_regs (gdbarch))
monitor_supply_register (regcache, i, p);
}
}
p = strtok (NULL, " \t\r\n");
}
return 0;
}
static void
init_picobug_cmds (void)
{
picobug_cmds.flags = MO_GETMEM_NEEDS_RANGE | MO_CLR_BREAK_USES_ADDR
| MO_PRINT_PROGRAM_OUTPUT;
picobug_cmds.init = picobug_inits; /* Init strings */
picobug_cmds.cont = "g\n"; /* continue command */
picobug_cmds.step = "s\n"; /* single step */
picobug_cmds.set_break = "br %x\n"; /* set a breakpoint */
picobug_cmds.clr_break = "nobr %x\n"; /* clear a breakpoint */
picobug_cmds.clr_all_break = "nobr\n"; /* clear all breakpoints */
picobug_cmds.setmem.cmdb = "mm %x %x ;b\n"; /* setmem.cmdb (addr, value) */
picobug_cmds.setmem.cmdw = "mm %x %x ;h\n"; /* setmem.cmdw (addr, value) */
picobug_cmds.setmem.cmdl = "mm %x %x ;w\n"; /* setmem.cmdl (addr, value) */
picobug_cmds.getmem.cmdb = "md %x %x\n"; /* getmem.cmdb (start addr,
end addr) */
picobug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */
picobug_cmds.setreg.cmd = "rm %s %x\n"; /* setreg.cmd (name, value) */
picobug_cmds.getreg.cmd = "rd %s\n"; /* getreg.cmd (name) */
picobug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */
picobug_cmds.dump_registers = "rd\n"; /* dump_registers */
picobug_cmds.dumpregs = picobug_dumpregs; /* dump registers parser */
picobug_cmds.load = "lo\n"; /* download command */
picobug_cmds.prompt = "picobug> "; /* monitor command prompt */
picobug_cmds.line_term = "\n"; /* end-of-line terminator */
picobug_cmds.target = &picobug_ops; /* target operations */
picobug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
picobug_cmds.regnames = picobug_regnames; /* registers names */
picobug_cmds.num_breakpoints = 20; /* number of breakpoints */
picobug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
}
void
_initialize_picobug_rom (void)
{
int i;
/* Initialize m32r RevC monitor target. */
init_picobug_cmds ();
init_monitor_ops (&picobug_ops);
picobug_ops.to_shortname = "picobug";
picobug_ops.to_longname = "picobug monitor";
picobug_ops.to_doc = "Debug via the picobug monitor.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).";
picobug_ops.to_open = picobug_open;
add_target (&picobug_ops);
}
|
