1 |
1181 |
sfurman |
/* 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.
|
4 |
|
|
|
5 |
|
|
This file is part of GDB.
|
6 |
|
|
|
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.
|
11 |
|
|
|
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.
|
16 |
|
|
|
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. */
|
21 |
|
|
|
22 |
|
|
#include "defs.h"
|
23 |
|
|
#include "gdbcore.h"
|
24 |
|
|
#include "target.h"
|
25 |
|
|
#include "monitor.h"
|
26 |
|
|
#include "serial.h"
|
27 |
|
|
#include "regcache.h"
|
28 |
|
|
#include "value.h"
|
29 |
|
|
|
30 |
|
|
static void rom68k_open (char *args, int from_tty);
|
31 |
|
|
|
32 |
|
|
/* Return true if C is a hex digit.
|
33 |
|
|
We can't use isxdigit here: that is affected by the current locale;
|
34 |
|
|
ROM68K is not. */
|
35 |
|
|
static int
|
36 |
|
|
is_hex_digit (int c)
|
37 |
|
|
{
|
38 |
|
|
return (('0' <= c && c <= '9')
|
39 |
|
|
|| ('a' <= c && c <= 'f')
|
40 |
|
|
|| ('A' <= c && c <= 'F'));
|
41 |
|
|
}
|
42 |
|
|
|
43 |
|
|
|
44 |
|
|
/* Convert hex digit A to a number. */
|
45 |
|
|
static int
|
46 |
|
|
hex_digit_value (int a)
|
47 |
|
|
{
|
48 |
|
|
if (a >= '0' && a <= '9')
|
49 |
|
|
return a - '0';
|
50 |
|
|
else if (a >= 'a' && a <= 'f')
|
51 |
|
|
return a - 'a' + 10;
|
52 |
|
|
else if (a >= 'A' && a <= 'F')
|
53 |
|
|
return a - 'A' + 10;
|
54 |
|
|
else
|
55 |
|
|
error ("Invalid hex digit %d", a);
|
56 |
|
|
}
|
57 |
|
|
|
58 |
|
|
|
59 |
|
|
/* Return true iff C is a whitespace character.
|
60 |
|
|
We can't use isspace here: that is affected by the current locale;
|
61 |
|
|
ROM68K is not. */
|
62 |
|
|
static int
|
63 |
|
|
is_whitespace (int c)
|
64 |
|
|
{
|
65 |
|
|
return (c == ' '
|
66 |
|
|
|| c == '\r'
|
67 |
|
|
|| c == '\n'
|
68 |
|
|
|| c == '\t'
|
69 |
|
|
|| c == '\f');
|
70 |
|
|
}
|
71 |
|
|
|
72 |
|
|
|
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.
|
76 |
|
|
|
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. */
|
85 |
|
|
static char *
|
86 |
|
|
rom68k_supply_one_register (int regno, unsigned char *hex)
|
87 |
|
|
{
|
88 |
|
|
ULONGEST value;
|
89 |
|
|
unsigned char regbuf[MAX_REGISTER_RAW_SIZE];
|
90 |
|
|
|
91 |
|
|
value = 0;
|
92 |
|
|
while (*hex != '\0')
|
93 |
|
|
if (is_hex_digit (*hex))
|
94 |
|
|
value = (value * 16) + hex_digit_value (*hex++);
|
95 |
|
|
else
|
96 |
|
|
break;
|
97 |
|
|
|
98 |
|
|
/* Skip any whitespace. */
|
99 |
|
|
while (is_whitespace (*hex))
|
100 |
|
|
hex++;
|
101 |
|
|
|
102 |
|
|
store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), value);
|
103 |
|
|
supply_register (regno, regbuf);
|
104 |
|
|
|
105 |
|
|
return hex;
|
106 |
|
|
}
|
107 |
|
|
|
108 |
|
|
|
109 |
|
|
static void
|
110 |
|
|
rom68k_supply_register (char *regname, int regnamelen, char *val, int vallen)
|
111 |
|
|
{
|
112 |
|
|
int numregs;
|
113 |
|
|
int regno;
|
114 |
|
|
|
115 |
|
|
numregs = 1;
|
116 |
|
|
regno = -1;
|
117 |
|
|
|
118 |
|
|
if (regnamelen == 2)
|
119 |
|
|
switch (regname[0])
|
120 |
|
|
{
|
121 |
|
|
case 'S':
|
122 |
|
|
if (regname[1] == 'R')
|
123 |
|
|
regno = PS_REGNUM;
|
124 |
|
|
break;
|
125 |
|
|
case 'P':
|
126 |
|
|
if (regname[1] == 'C')
|
127 |
|
|
regno = PC_REGNUM;
|
128 |
|
|
break;
|
129 |
|
|
case 'D':
|
130 |
|
|
if (regname[1] != 'R')
|
131 |
|
|
break;
|
132 |
|
|
regno = D0_REGNUM;
|
133 |
|
|
numregs = 8;
|
134 |
|
|
break;
|
135 |
|
|
case 'A':
|
136 |
|
|
if (regname[1] != 'R')
|
137 |
|
|
break;
|
138 |
|
|
regno = A0_REGNUM;
|
139 |
|
|
numregs = 7;
|
140 |
|
|
break;
|
141 |
|
|
}
|
142 |
|
|
else if (regnamelen == 3)
|
143 |
|
|
switch (regname[0])
|
144 |
|
|
{
|
145 |
|
|
case 'I':
|
146 |
|
|
if (regname[1] == 'S' && regname[2] == 'P')
|
147 |
|
|
regno = SP_REGNUM;
|
148 |
|
|
}
|
149 |
|
|
|
150 |
|
|
if (regno >= 0)
|
151 |
|
|
while (numregs-- > 0)
|
152 |
|
|
val = rom68k_supply_one_register (regno++, val);
|
153 |
|
|
}
|
154 |
|
|
|
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". */
|
159 |
|
|
|
160 |
|
|
static const char *
|
161 |
|
|
rom68k_regname (int index)
|
162 |
|
|
{
|
163 |
|
|
|
164 |
|
|
static char *regnames[] =
|
165 |
|
|
{
|
166 |
|
|
"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
|
167 |
|
|
"A0", "A1", "A2", "A3", "A4", "A5", "A6", "ISP",
|
168 |
|
|
"SR", "PC"
|
169 |
|
|
};
|
170 |
|
|
|
171 |
|
|
if ((index >= (sizeof (regnames) / sizeof(regnames[0])))
|
172 |
|
|
|| (index < 0) || (index >= NUM_REGS))
|
173 |
|
|
return NULL;
|
174 |
|
|
else
|
175 |
|
|
return regnames[index];
|
176 |
|
|
|
177 |
|
|
}
|
178 |
|
|
|
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. */
|
182 |
|
|
|
183 |
|
|
static struct target_ops rom68k_ops;
|
184 |
|
|
|
185 |
|
|
static char *rom68k_inits[] =
|
186 |
|
|
{".\r\r", NULL}; /* Exits pm/pr & download cmds */
|
187 |
|
|
|
188 |
|
|
static struct monitor_ops rom68k_cmds;
|
189 |
|
|
|
190 |
|
|
static void
|
191 |
|
|
init_rom68k_cmds (void)
|
192 |
|
|
{
|
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 */
|
240 |
|
|
|
241 |
|
|
static void
|
242 |
|
|
rom68k_open (char *args, int from_tty)
|
243 |
|
|
{
|
244 |
|
|
monitor_open (args, &rom68k_cmds, from_tty);
|
245 |
|
|
}
|
246 |
|
|
|
247 |
|
|
void
|
248 |
|
|
_initialize_rom68k (void)
|
249 |
|
|
{
|
250 |
|
|
init_rom68k_cmds ();
|
251 |
|
|
init_monitor_ops (&rom68k_ops);
|
252 |
|
|
|
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;
|
258 |
|
|
|
259 |
|
|
add_target (&rom68k_ops);
|
260 |
|
|
}
|