1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
2 GDB, the GNU debugger.
3 Copyright (C) 1997-2013 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 3 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, see <http://www.gnu.org/licenses/>. */
19
20 #include "defs.h"
21 #include "gdbcore.h"
22 #include "target.h"
23 #include "monitor.h"
24 #include "serial.h"
25 #include "symfile.h" /* For generic_load() */
26 #include "inferior.h"
27 #include "regcache.h"
28
29 static void dink32_open (char *args, int from_tty);
30
31 static void
dink32_supply_register(struct regcache * regcache,char * regname,int regnamelen,char * val,int vallen)32 dink32_supply_register (struct regcache *regcache, char *regname,
33 int regnamelen, char *val, int vallen)
34 {
35 int regno = 0;
36
37 if (regnamelen < 2 || regnamelen > 4)
38 return;
39
40 switch (regname[0])
41 {
42 case 'R':
43 if (regname[1] < '0' || regname[1] > '9')
44 return;
45 if (regnamelen == 2)
46 regno = regname[1] - '0';
47 else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
48 regno = (regname[1] - '0') * 10 + (regname[2] - '0');
49 else
50 return;
51 break;
52 case 'F':
53 if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
54 return;
55 if (regnamelen == 3)
56 regno = 32 + regname[2] - '0';
57 else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
58 regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
59 else
60 return;
61 break;
62 case 'I':
63 if (regnamelen != 2 || regname[1] != 'P')
64 return;
65 regno = 64;
66 break;
67 case 'M':
68 if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
69 return;
70 regno = 65;
71 break;
72 case 'C':
73 if (regnamelen != 2 || regname[1] != 'R')
74 return;
75 regno = 66;
76 break;
77 case 'S':
78 if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
79 return;
80 else if (regname[3] == '8')
81 regno = 67;
82 else if (regname[3] == '9')
83 regno = 68;
84 else if (regname[3] == '1')
85 regno = 69;
86 else if (regname[3] == '0')
87 regno = 70;
88 else
89 return;
90 break;
91 default:
92 return;
93 }
94
95 monitor_supply_register (regcache, regno, val);
96 }
97
98 /* This array of registers needs to match the indexes used by GDB.
99 The whole reason this exists is because the various ROM monitors
100 use different names than GDB does, and don't support all the
101 registers either. */
102
103 static char *dink32_regnames[] =
104 {
105 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
106 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
107 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
108 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
109
110 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
111 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
112 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
113 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
114
115 "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
116 };
117
118 static struct target_ops dink32_ops;
119
120 static char *dink32_inits[] =
121 {"\r", NULL};
122
123 static struct monitor_ops dink32_cmds;
124
125 static void
dink32_open(char * args,int from_tty)126 dink32_open (char *args, int from_tty)
127 {
128 monitor_open (args, &dink32_cmds, from_tty);
129 }
130
131 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
132
133 void
_initialize_dink32_rom(void)134 _initialize_dink32_rom (void)
135 {
136 dink32_cmds.flags = MO_HEX_PREFIX | MO_GETMEM_NEEDS_RANGE
137 | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED
138 | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE
139 | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK
140 | MO_SREC_ACK_ROTATE;
141 dink32_cmds.init = dink32_inits;
142 dink32_cmds.cont = "go +\r";
143 dink32_cmds.step = "tr +\r";
144 dink32_cmds.set_break = "bp 0x%x\r";
145 dink32_cmds.clr_break = "bp %d\r";
146 #if 0 /* Would need to follow strict alignment rules.. */
147 dink32_cmds.fill = "mf %x %x %x\r";
148 #endif
149 dink32_cmds.setmem.cmdb = "mm -b %x\r";
150 dink32_cmds.setmem.cmdw = "mm -w %x\r";
151 dink32_cmds.setmem.cmdl = "mm %x\r";
152 dink32_cmds.setmem.term = " ? ";
153 dink32_cmds.getmem.cmdb = "md %x\r";
154 dink32_cmds.getmem.resp_delim = " ";
155 dink32_cmds.setreg.cmd = "rm %s\r";
156 dink32_cmds.setreg.term = " ? ";
157 dink32_cmds.getreg.cmd = "rd %s\r";
158 dink32_cmds.getreg.resp_delim = ": ";
159 dink32_cmds.dump_registers = "rd r\r";
160 dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
161 dink32_cmds.supply_register = dink32_supply_register;
162 /* S-record download, via "keyboard port". */
163 dink32_cmds.load = "dl -k\r";
164 dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
165 dink32_cmds.prompt = "DINK32_603 >>";
166 dink32_cmds.line_term = "\r";
167 dink32_cmds.target = &dink32_ops;
168 dink32_cmds.stopbits = SERIAL_1_STOPBITS;
169 dink32_cmds.regnames = dink32_regnames;
170 dink32_cmds.magic = MONITOR_OPS_MAGIC;
171
172 init_monitor_ops (&dink32_ops);
173
174 dink32_ops.to_shortname = "dink32";
175 dink32_ops.to_longname = "DINK32 monitor";
176 dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
177 Specify the serial device it is connected to (e.g. /dev/ttya).";
178 dink32_ops.to_open = dink32_open;
179
180 add_target (&dink32_ops);
181 }
182