1 /* Remote target glue for the ROM68K ROM monitor.
2 Copyright 1988, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
30 static void rom68k_open (char *args
, int from_tty
);
32 /* Return true if C is a hex digit.
33 We can't use isxdigit here: that is affected by the current locale;
38 return (('0' <= c
&& c
<= '9')
39 || ('a' <= c
&& c
<= 'f')
40 || ('A' <= c
&& c
<= 'F'));
44 /* Convert hex digit A to a number. */
46 hex_digit_value (int a
)
48 if (a
>= '0' && a
<= '9')
50 else if (a
>= 'a' && a
<= 'f')
52 else if (a
>= 'A' && a
<= 'F')
55 error ("Invalid hex digit %d", a
);
59 /* Return true iff C is a whitespace character.
60 We can't use isspace here: that is affected by the current locale;
73 /* Parse a string of hex digits starting at HEX, supply them as the
74 value of register REGNO, skip any whitespace, and return a pointer
75 to the next character.
77 There is a function in monitor.c, monitor_supply_register, which is
78 supposed to do this job. However, there is some rather odd stuff
79 in there (whitespace characters don't terminate numbers, for
80 example) that is incorrect for ROM68k. It's basically impossible
81 to safely tweak monitor_supply_register --- it's used by a zillion
82 other monitors; who knows what behaviors they're depending on. So
83 instead, we'll just use our own function, which can behave exactly
84 the way we want it to. */
86 rom68k_supply_one_register (int regno
, unsigned char *hex
)
89 unsigned char regbuf
[MAX_REGISTER_RAW_SIZE
];
93 if (is_hex_digit (*hex
))
94 value
= (value
* 16) + hex_digit_value (*hex
++);
98 /* Skip any whitespace. */
99 while (is_whitespace (*hex
))
102 store_unsigned_integer (regbuf
, REGISTER_RAW_SIZE (regno
), value
);
103 supply_register (regno
, regbuf
);
110 rom68k_supply_register (char *regname
, int regnamelen
, char *val
, int vallen
)
122 if (regname
[1] == 'R')
126 if (regname
[1] == 'C')
130 if (regname
[1] != 'R')
136 if (regname
[1] != 'R')
142 else if (regnamelen
== 3)
146 if (regname
[1] == 'S' && regname
[2] == 'P')
151 while (numregs
-- > 0)
152 val
= rom68k_supply_one_register (regno
++, val
);
155 /* This array of registers need to match the indexes used by GDB.
156 This exists because the various ROM monitors use different strings
157 than does GDB, and don't necessarily support all the registers
158 either. So, typing "info reg sp" becomes a "r30". */
161 rom68k_regname (int index
)
164 static char *regnames
[] =
166 "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
167 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "ISP",
171 if ((index
>= (sizeof (regnames
) / sizeof(regnames
[0])))
172 || (index
< 0) || (index
>= NUM_REGS
))
175 return regnames
[index
];
179 /* Define the monitor command strings. Since these are passed directly
180 through to a printf style function, we may include formatting
181 strings. We also need a CR or LF on the end. */
183 static struct target_ops rom68k_ops
;
185 static char *rom68k_inits
[] =
186 {".\r\r", NULL
}; /* Exits pm/pr & download cmds */
188 static struct monitor_ops rom68k_cmds
;
191 init_rom68k_cmds (void)
193 rom68k_cmds
.flags
= MO_PRINT_PROGRAM_OUTPUT
;
194 rom68k_cmds
.init
= rom68k_inits
; /* monitor init string */
195 rom68k_cmds
.cont
= "go\r";
196 rom68k_cmds
.step
= "st\r";
197 rom68k_cmds
.stop
= NULL
;
198 rom68k_cmds
.set_break
= "db %x\r";
199 rom68k_cmds
.clr_break
= "cb %x\r";
200 rom68k_cmds
.clr_all_break
= "cb *\r";
201 rom68k_cmds
.fill
= "fm %x %x %x\r";
202 rom68k_cmds
.setmem
.cmdb
= "pm %x %x\r";
203 rom68k_cmds
.setmem
.cmdw
= "pm.w %x %x\r";
204 rom68k_cmds
.setmem
.cmdl
= "pm.l %x %x\r";
205 rom68k_cmds
.setmem
.cmdll
= NULL
;
206 rom68k_cmds
.setmem
.resp_delim
= NULL
;
207 rom68k_cmds
.setmem
.term
= NULL
;
208 rom68k_cmds
.setmem
.term_cmd
= NULL
;
209 rom68k_cmds
.getmem
.cmdb
= "dm %x %x\r";
210 rom68k_cmds
.getmem
.cmdw
= "dm.w %x %x\r";
211 rom68k_cmds
.getmem
.cmdl
= "dm.l %x %x\r";
212 rom68k_cmds
.getmem
.cmdll
= NULL
;
213 rom68k_cmds
.getmem
.resp_delim
= " ";
214 rom68k_cmds
.getmem
.term
= NULL
;
215 rom68k_cmds
.getmem
.term_cmd
= NULL
;
216 rom68k_cmds
.setreg
.cmd
= "pr %s %x\r";
217 rom68k_cmds
.setreg
.resp_delim
= NULL
;
218 rom68k_cmds
.setreg
.term
= NULL
;
219 rom68k_cmds
.setreg
.term_cmd
= NULL
;
220 rom68k_cmds
.getreg
.cmd
= "pr %s\r";
221 rom68k_cmds
.getreg
.resp_delim
= ": ";
222 rom68k_cmds
.getreg
.term
= "= ";
223 rom68k_cmds
.getreg
.term_cmd
= ".\r";
224 rom68k_cmds
.dump_registers
= "dr\r";
225 rom68k_cmds
.register_pattern
=
226 "\\(\\w+\\)=\\([0-9a-fA-F]+\\( +[0-9a-fA-F]+\\b\\)*\\)";
227 rom68k_cmds
.supply_register
= rom68k_supply_register
;
228 rom68k_cmds
.load_routine
= NULL
;
229 rom68k_cmds
.load
= "dc\r";
230 rom68k_cmds
.loadresp
= "Waiting for S-records from host... ";
231 rom68k_cmds
.prompt
= "ROM68K :-> ";
232 rom68k_cmds
.line_term
= "\r";
233 rom68k_cmds
.cmd_end
= ".\r";
234 rom68k_cmds
.target
= &rom68k_ops
;
235 rom68k_cmds
.stopbits
= SERIAL_1_STOPBITS
;
236 rom68k_cmds
.regnames
= NULL
;
237 rom68k_cmds
.regname
= rom68k_regname
;
238 rom68k_cmds
.magic
= MONITOR_OPS_MAGIC
;
239 } /* init_rom68k_cmds */
242 rom68k_open (char *args
, int from_tty
)
244 monitor_open (args
, &rom68k_cmds
, from_tty
);
248 _initialize_rom68k (void)
251 init_monitor_ops (&rom68k_ops
);
253 rom68k_ops
.to_shortname
= "rom68k";
254 rom68k_ops
.to_longname
= "Rom68k debug monitor for the IDP Eval board";
255 rom68k_ops
.to_doc
= "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\
256 Specify the serial device it is connected to (e.g. /dev/ttya).";
257 rom68k_ops
.to_open
= rom68k_open
;
259 add_target (&rom68k_ops
);
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