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
|
/* Remote debugging interface to dBUG ROM monitor for GDB, the GNU debugger.
Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Written by Stan Shebs of Cygnus Support.
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* dBUG is a monitor supplied on various Motorola boards, including
m68k, ColdFire, and PowerPC-based designs. The code here assumes
the ColdFire, and (as of 9/25/96) has only been tested with a
ColdFire IDP board. */
#include "defs.h"
#include "gdbcore.h"
#include "target.h"
#include "monitor.h"
#include "serial.h"
#include "regcache.h"
#include "m68k-tdep.h"
static void dbug_open (char *args, int from_tty);
static void
dbug_supply_register (char *regname, int regnamelen, char *val, int vallen)
{
int regno;
if (regnamelen != 2)
return;
switch (regname[0])
{
case 'S':
if (regname[1] != 'R')
return;
regno = PS_REGNUM;
break;
case 'P':
if (regname[1] != 'C')
return;
regno = PC_REGNUM;
break;
case 'D':
if (regname[1] < '0' || regname[1] > '7')
return;
regno = regname[1] - '0' + M68K_D0_REGNUM;
break;
case 'A':
if (regname[1] < '0' || regname[1] > '7')
return;
regno = regname[1] - '0' + M68K_A0_REGNUM;
break;
default:
return;
}
monitor_supply_register (regno, val);
}
/* This array of registers needs to match the indexes used by GDB. The
whole reason this exists is because the various ROM monitors use
different names than GDB does, and don't support all the registers
either. So, typing "info reg sp" becomes an "A7". */
static const char *
dbug_regname (int index)
{
static char *regnames[] =
{
"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
"SR", "PC"
/* no float registers */
};
if ((index >= (sizeof (regnames) / sizeof (regnames[0])))
|| (index < 0) || (index >= NUM_REGS))
return NULL;
else
return regnames[index];
}
static struct target_ops dbug_ops;
static struct monitor_ops dbug_cmds;
static char *dbug_inits[] =
{"\r", NULL};
static void
init_dbug_cmds (void)
{
dbug_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR;
dbug_cmds.init = dbug_inits; /* Init strings */
dbug_cmds.cont = "go\r"; /* continue command */
dbug_cmds.step = "trace\r"; /* single step */
dbug_cmds.stop = NULL; /* interrupt command */
dbug_cmds.set_break = "br %x\r"; /* set a breakpoint */
dbug_cmds.clr_break = "br -r %x\r"; /* clear a breakpoint */
dbug_cmds.clr_all_break = "br -r\r"; /* clear all breakpoints */
dbug_cmds.fill = "bf.b %x %x %x\r"; /* fill (start end val) */
dbug_cmds.setmem.cmdb = "mm.b %x %x\r"; /* setmem.cmdb (addr, value) */
dbug_cmds.setmem.cmdw = "mm.w %x %x\r"; /* setmem.cmdw (addr, value) */
dbug_cmds.setmem.cmdl = "mm.l %x %x\r"; /* setmem.cmdl (addr, value) */
dbug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
dbug_cmds.setmem.resp_delim = NULL; /* setmem.resp_delim */
dbug_cmds.setmem.term = NULL; /* setmem.term */
dbug_cmds.setmem.term_cmd = NULL; /* setmem.term_cmd */
dbug_cmds.getmem.cmdb = "md.b %x %x\r"; /* getmem.cmdb (addr, addr2) */
dbug_cmds.getmem.cmdw = "md.w %x %x\r"; /* getmem.cmdw (addr, addr2) */
dbug_cmds.getmem.cmdl = "md.l %x %x\r"; /* getmem.cmdl (addr, addr2) */
dbug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, addr2) */
dbug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */
dbug_cmds.getmem.term = NULL; /* getmem.term */
dbug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */
dbug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */
dbug_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */
dbug_cmds.setreg.term = NULL; /* setreg.term */
dbug_cmds.setreg.term_cmd = NULL; /* setreg.term_cmd */
dbug_cmds.getreg.cmd = "rd %s\r"; /* getreg.cmd (name) */
dbug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */
dbug_cmds.getreg.term = NULL; /* getreg.term */
dbug_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */
dbug_cmds.dump_registers = "rd\r"; /* dump_registers */
dbug_cmds.register_pattern = "\\(\\w+\\) +:\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
dbug_cmds.supply_register = dbug_supply_register;
dbug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
dbug_cmds.load = "dl\r"; /* download command */
dbug_cmds.loadresp = "\n"; /* load response */
dbug_cmds.prompt = "dBUG>"; /* monitor command prompt */
dbug_cmds.line_term = "\r"; /* end-of-line terminator */
dbug_cmds.cmd_end = NULL; /* optional command terminator */
dbug_cmds.target = &dbug_ops; /* target operations */
dbug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
dbug_cmds.regnames = NULL; /* registers names */
dbug_cmds.regname = dbug_regname;
dbug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
} /* init_debug_ops */
static void
dbug_open (char *args, int from_tty)
{
monitor_open (args, &dbug_cmds, from_tty);
}
extern initialize_file_ftype _initialize_dbug_rom; /* -Wmissing-prototypes */
void
_initialize_dbug_rom (void)
{
init_dbug_cmds ();
init_monitor_ops (&dbug_ops);
dbug_ops.to_shortname = "dbug";
dbug_ops.to_longname = "dBUG monitor";
dbug_ops.to_doc = "Debug via the dBUG monitor.\n\
Specify the serial device it is connected to (e.g. /dev/ttya).";
dbug_ops.to_open = dbug_open;
add_target (&dbug_ops);
}
|
