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c906108c 1/* Remote debugging interface to dBUG ROM monitor for GDB, the GNU debugger.
6aba47ca
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2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2007
3 Free Software Foundation, Inc.
c906108c
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4
5 Written by Stan Shebs of Cygnus Support.
6
c5aa993b 7 This file is part of GDB.
c906108c 8
c5aa993b
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9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
c906108c 13
c5aa993b
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14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
c906108c 18
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19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
197e01b6
EZ
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
c906108c
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23
24/* dBUG is a monitor supplied on various Motorola boards, including
25 m68k, ColdFire, and PowerPC-based designs. The code here assumes
26 the ColdFire, and (as of 9/25/96) has only been tested with a
27 ColdFire IDP board. */
28
29#include "defs.h"
30#include "gdbcore.h"
31#include "target.h"
32#include "monitor.h"
33#include "serial.h"
4e052eda 34#include "regcache.h"
c906108c 35
32eeb91a
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36#include "m68k-tdep.h"
37
a14ed312 38static void dbug_open (char *args, int from_tty);
c906108c
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39
40static void
fba45db2 41dbug_supply_register (char *regname, int regnamelen, char *val, int vallen)
c906108c
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42{
43 int regno;
44
45 if (regnamelen != 2)
46 return;
47
48 switch (regname[0])
49 {
50 case 'S':
51 if (regname[1] != 'R')
52 return;
53 regno = PS_REGNUM;
54 break;
55 case 'P':
56 if (regname[1] != 'C')
57 return;
58 regno = PC_REGNUM;
59 break;
60 case 'D':
61 if (regname[1] < '0' || regname[1] > '7')
62 return;
32eeb91a 63 regno = regname[1] - '0' + M68K_D0_REGNUM;
c906108c
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64 break;
65 case 'A':
66 if (regname[1] < '0' || regname[1] > '7')
67 return;
32eeb91a 68 regno = regname[1] - '0' + M68K_A0_REGNUM;
c906108c
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69 break;
70 default:
71 return;
72 }
73
74 monitor_supply_register (regno, val);
75}
76
77/* This array of registers needs to match the indexes used by GDB. The
78 whole reason this exists is because the various ROM monitors use
79 different names than GDB does, and don't support all the registers
80 either. So, typing "info reg sp" becomes an "A7". */
81
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82static const char *
83dbug_regname (int index)
c906108c 84{
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85 static char *regnames[] =
86 {
87 "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
88 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
89 "SR", "PC"
90 /* no float registers */
91 };
92
93 if ((index >= (sizeof (regnames) / sizeof (regnames[0])))
94 || (index < 0) || (index >= NUM_REGS))
95 return NULL;
96 else
97 return regnames[index];
98
99}
100
c906108c 101static struct target_ops dbug_ops;
c5aa993b 102static struct monitor_ops dbug_cmds;
c906108c 103
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104static char *dbug_inits[] =
105{"\r", NULL};
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106
107
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108static void
109init_dbug_cmds (void)
c906108c 110{
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111 dbug_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR;
112 dbug_cmds.init = dbug_inits; /* Init strings */
113 dbug_cmds.cont = "go\r"; /* continue command */
114 dbug_cmds.step = "trace\r"; /* single step */
115 dbug_cmds.stop = NULL; /* interrupt command */
116 dbug_cmds.set_break = "br %x\r"; /* set a breakpoint */
117 dbug_cmds.clr_break = "br -r %x\r"; /* clear a breakpoint */
118 dbug_cmds.clr_all_break = "br -r\r"; /* clear all breakpoints */
119 dbug_cmds.fill = "bf.b %x %x %x\r"; /* fill (start end val) */
120 dbug_cmds.setmem.cmdb = "mm.b %x %x\r"; /* setmem.cmdb (addr, value) */
121 dbug_cmds.setmem.cmdw = "mm.w %x %x\r"; /* setmem.cmdw (addr, value) */
122 dbug_cmds.setmem.cmdl = "mm.l %x %x\r"; /* setmem.cmdl (addr, value) */
123 dbug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
124 dbug_cmds.setmem.resp_delim = NULL; /* setmem.resp_delim */
125 dbug_cmds.setmem.term = NULL; /* setmem.term */
126 dbug_cmds.setmem.term_cmd = NULL; /* setmem.term_cmd */
127 dbug_cmds.getmem.cmdb = "md.b %x %x\r"; /* getmem.cmdb (addr, addr2) */
128 dbug_cmds.getmem.cmdw = "md.w %x %x\r"; /* getmem.cmdw (addr, addr2) */
129 dbug_cmds.getmem.cmdl = "md.l %x %x\r"; /* getmem.cmdl (addr, addr2) */
130 dbug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, addr2) */
131 dbug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */
132 dbug_cmds.getmem.term = NULL; /* getmem.term */
133 dbug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */
134 dbug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */
135 dbug_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */
136 dbug_cmds.setreg.term = NULL; /* setreg.term */
137 dbug_cmds.setreg.term_cmd = NULL; /* setreg.term_cmd */
138 dbug_cmds.getreg.cmd = "rd %s\r"; /* getreg.cmd (name) */
139 dbug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */
140 dbug_cmds.getreg.term = NULL; /* getreg.term */
141 dbug_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */
142 dbug_cmds.dump_registers = "rd\r"; /* dump_registers */
143 dbug_cmds.register_pattern = "\\(\\w+\\) +:\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
23a6d369 144 dbug_cmds.supply_register = dbug_supply_register;
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145 dbug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
146 dbug_cmds.load = "dl\r"; /* download command */
147 dbug_cmds.loadresp = "\n"; /* load response */
148 dbug_cmds.prompt = "dBUG>"; /* monitor command prompt */
149 dbug_cmds.line_term = "\r"; /* end-of-line terminator */
150 dbug_cmds.cmd_end = NULL; /* optional command terminator */
151 dbug_cmds.target = &dbug_ops; /* target operations */
152 dbug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
1c617db8
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153 dbug_cmds.regnames = NULL; /* registers names */
154 dbug_cmds.regname = dbug_regname;
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155 dbug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
156} /* init_debug_ops */
c906108c
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157
158static void
fba45db2 159dbug_open (char *args, int from_tty)
c906108c
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160{
161 monitor_open (args, &dbug_cmds, from_tty);
162}
163
a78f21af
AC
164extern initialize_file_ftype _initialize_dbug_rom; /* -Wmissing-prototypes */
165
c906108c 166void
fba45db2 167_initialize_dbug_rom (void)
c906108c 168{
c5aa993b 169 init_dbug_cmds ();
c906108c
SS
170 init_monitor_ops (&dbug_ops);
171
172 dbug_ops.to_shortname = "dbug";
173 dbug_ops.to_longname = "dBUG monitor";
174 dbug_ops.to_doc = "Debug via the dBUG monitor.\n\
175Specify the serial device it is connected to (e.g. /dev/ttya).";
176 dbug_ops.to_open = dbug_open;
177
178 add_target (&dbug_ops);
179}