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[thirdparty/binutils-gdb.git] / gdb / abug-rom.c
1 /* Remote debugging interface for ABug Rom monitor for GDB, the GNU debugger.
2 Copyright 1995, 1996, 1998 Free Software Foundation, Inc.
3
4 Written by Rob Savoye of Cygnus Support
5
6 This file is part of GDB.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 #include "defs.h"
24 #include "gdbcore.h"
25 #include "target.h"
26 #include "monitor.h"
27 #include "serial.h"
28
29 /* Prototypes for local functions. */
30
31 static void abug_open PARAMS ((char *args, int from_tty));
32
33 static void
34 abug_supply_register (regname, regnamelen, val, vallen)
35 char *regname;
36 int regnamelen;
37 char *val;
38 int vallen;
39 {
40 int regno;
41
42 if (regnamelen != 2)
43 return;
44
45 switch (regname[0])
46 {
47 case 'S':
48 if (regname[1] != 'R')
49 return;
50 regno = PS_REGNUM;
51 break;
52 case 'P':
53 if (regname[1] != 'C')
54 return;
55 regno = PC_REGNUM;
56 break;
57 case 'D':
58 if (regname[1] < '0' || regname[1] > '7')
59 return;
60 regno = regname[1] - '0' + D0_REGNUM;
61 break;
62 case 'A':
63 if (regname[1] < '0' || regname[1] > '7')
64 return;
65 regno = regname[1] - '0' + A0_REGNUM;
66 break;
67 default:
68 return;
69 }
70
71 monitor_supply_register (regno, val);
72 }
73
74 /*
75 * This array of registers needs to match the indexes used by GDB. The
76 * whole reason this exists is because the various ROM monitors use
77 * different names than GDB does, and don't support all the
78 * registers either. So, typing "info reg sp" becomes an "A7".
79 */
80
81 static char *abug_regnames[NUM_REGS] =
82 {
83 "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
84 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
85 "PC",
86 };
87
88 /*
89 * Define the monitor command strings. Since these are passed directly
90 * through to a printf style function, we need can include formatting
91 * strings. We also need a CR or LF on the end.
92 */
93
94 static struct target_ops abug_ops;
95
96 static char *abug_inits[] =
97 {"\r", NULL};
98
99 static struct monitor_ops abug_cmds;
100
101 static void
102 init_abug_cmds (void)
103 {
104 abug_cmds.flags = MO_CLR_BREAK_USES_ADDR;
105 abug_cmds.init = abug_inits; /* Init strings */
106 abug_cmds.cont = "g\r"; /* continue command */
107 abug_cmds.step = "t\r"; /* single step */
108 abug_cmds.stop = NULL; /* interrupt command */
109 abug_cmds.set_break = "br %x\r"; /* set a breakpoint */
110 abug_cmds.clr_break = "nobr %x\r"; /* clear a breakpoint */
111 abug_cmds.clr_all_break = "nobr\r"; /* clear all breakpoints */
112 abug_cmds.fill = "bf %x:%x %x;b\r"; /* fill (start count val) */
113 abug_cmds.setmem.cmdb = "ms %x %02x\r"; /* setmem.cmdb (addr, value) */
114 abug_cmds.setmem.cmdw = "ms %x %04x\r"; /* setmem.cmdw (addr, value) */
115 abug_cmds.setmem.cmdl = "ms %x %08x\r"; /* setmem.cmdl (addr, value) */
116 abug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
117 abug_cmds.setmem.resp_delim = NULL; /* setreg.resp_delim */
118 abug_cmds.setmem.term = NULL; /* setreg.term */
119 abug_cmds.setmem.term_cmd = NULL; /* setreg.term_cmd */
120 abug_cmds.getmem.cmdb = "md %x:%x;b\r"; /* getmem.cmdb (addr, len) */
121 abug_cmds.getmem.cmdw = "md %x:%x;b\r"; /* getmem.cmdw (addr, len) */
122 abug_cmds.getmem.cmdl = "md %x:%x;b\r"; /* getmem.cmdl (addr, len) */
123 abug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */
124 abug_cmds.getmem.resp_delim = " "; /* getmem.resp_delim */
125 abug_cmds.getmem.term = NULL; /* getmem.term */
126 abug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */
127 abug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */
128 abug_cmds.setreg.resp_delim = "="; /* setreg.resp_delim */
129 abug_cmds.setreg.term = "? "; /* setreg.term */
130 abug_cmds.setreg.term_cmd = ".\r"; /* setreg.term_cmd */
131 abug_cmds.getreg.cmd = "rm %s\r"; /* getreg.cmd (name) */
132 abug_cmds.getreg.resp_delim = "="; /* getreg.resp_delim */
133 abug_cmds.getreg.term = "? "; /* getreg.term */
134 abug_cmds.getreg.term_cmd = ".\r"; /* getreg.term_cmd */
135 abug_cmds.dump_registers = "rd\r"; /* dump_registers */
136 abug_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
137 abug_cmds.supply_register = abug_supply_register; /* supply_register */
138 abug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
139 abug_cmds.load = "lo 0\r"; /* download command */
140 abug_cmds.loadresp = "\n"; /* load response */
141 abug_cmds.prompt = "135Bug>"; /* monitor command prompt */
142 abug_cmds.line_term = "\r"; /* end-of-line terminator */
143 abug_cmds.cmd_end = NULL; /* optional command terminator */
144 abug_cmds.target = &abug_ops; /* target operations */
145 abug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
146 abug_cmds.regnames = abug_regnames; /* registers names */
147 abug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
148 };
149
150 static void
151 abug_open (args, from_tty)
152 char *args;
153 int from_tty;
154 {
155 monitor_open (args, &abug_cmds, from_tty);
156 }
157
158 void
159 _initialize_abug_rom ()
160 {
161 init_abug_cmds ();
162 init_monitor_ops (&abug_ops);
163
164 abug_ops.to_shortname = "abug";
165 abug_ops.to_longname = "ABug monitor";
166 abug_ops.to_doc = "Debug via the ABug monitor.\n\
167 Specify the serial device it is connected to (e.g. /dev/ttya).";
168 abug_ops.to_open = abug_open;
169
170 add_target (&abug_ops);
171 }