1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
2 GDB, the GNU debugger.
3 Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
20
21 #include "defs.h"
22 #include "gdbcore.h"
23 #include "target.h"
24 #include "monitor.h"
25 #include "serial.h"
26 #include "symfile.h" /* For generic_load() */
27 #include "inferior.h"
28 #include "regcache.h"
29
30 static void dink32_open (char *args, int from_tty);
31
32 static void
dink32_supply_register(struct regcache * regcache,char * regname,int regnamelen,char * val,int vallen)33 dink32_supply_register (struct regcache *regcache, char *regname,
34 int regnamelen, char *val, int vallen)
35 {
36 int regno = 0;
37
38 if (regnamelen < 2 || regnamelen > 4)
39 return;
40
41 switch (regname[0])
42 {
43 case 'R':
44 if (regname[1] < '0' || regname[1] > '9')
45 return;
46 if (regnamelen == 2)
47 regno = regname[1] - '0';
48 else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
49 regno = (regname[1] - '0') * 10 + (regname[2] - '0');
50 else
51 return;
52 break;
53 case 'F':
54 if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
55 return;
56 if (regnamelen == 3)
57 regno = 32 + regname[2] - '0';
58 else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
59 regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
60 else
61 return;
62 break;
63 case 'I':
64 if (regnamelen != 2 || regname[1] != 'P')
65 return;
66 regno = 64;
67 break;
68 case 'M':
69 if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
70 return;
71 regno = 65;
72 break;
73 case 'C':
74 if (regnamelen != 2 || regname[1] != 'R')
75 return;
76 regno = 66;
77 break;
78 case 'S':
79 if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
80 return;
81 else if (regname[3] == '8')
82 regno = 67;
83 else if (regname[3] == '9')
84 regno = 68;
85 else if (regname[3] == '1')
86 regno = 69;
87 else if (regname[3] == '0')
88 regno = 70;
89 else
90 return;
91 break;
92 default:
93 return;
94 }
95
96 monitor_supply_register (regcache, regno, val);
97 }
98
99 /* This array of registers needs to match the indexes used by GDB.
100 The whole reason this exists is because the various ROM monitors
101 use different names than GDB does, and don't support all the
102 registers either. */
103
104 static char *dink32_regnames[] =
105 {
106 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
107 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
108 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
109 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
110
111 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
112 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
113 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
114 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
115
116 "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
117 };
118
119 static struct target_ops dink32_ops;
120
121 static char *dink32_inits[] =
122 {"\r", NULL};
123
124 static struct monitor_ops dink32_cmds;
125
126 static void
dink32_open(char * args,int from_tty)127 dink32_open (char *args, int from_tty)
128 {
129 monitor_open (args, &dink32_cmds, from_tty);
130 }
131
132 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
133
134 void
_initialize_dink32_rom(void)135 _initialize_dink32_rom (void)
136 {
137 dink32_cmds.flags = MO_HEX_PREFIX | MO_GETMEM_NEEDS_RANGE
138 | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED
139 | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE
140 | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK
141 | MO_SREC_ACK_ROTATE;
142 dink32_cmds.init = dink32_inits;
143 dink32_cmds.cont = "go +\r";
144 dink32_cmds.step = "tr +\r";
145 dink32_cmds.set_break = "bp 0x%x\r";
146 dink32_cmds.clr_break = "bp %d\r";
147 #if 0 /* Would need to follow strict alignment rules.. */
148 dink32_cmds.fill = "mf %x %x %x\r";
149 #endif
150 dink32_cmds.setmem.cmdb = "mm -b %x\r";
151 dink32_cmds.setmem.cmdw = "mm -w %x\r";
152 dink32_cmds.setmem.cmdl = "mm %x\r";
153 dink32_cmds.setmem.term = " ? ";
154 dink32_cmds.getmem.cmdb = "md %x\r";
155 dink32_cmds.getmem.resp_delim = " ";
156 dink32_cmds.setreg.cmd = "rm %s\r";
157 dink32_cmds.setreg.term = " ? ";
158 dink32_cmds.getreg.cmd = "rd %s\r";
159 dink32_cmds.getreg.resp_delim = ": ";
160 dink32_cmds.dump_registers = "rd r\r";
161 dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
162 dink32_cmds.supply_register = dink32_supply_register;
163 /* S-record download, via "keyboard port". */
164 dink32_cmds.load = "dl -k\r";
165 dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
166 dink32_cmds.prompt = "DINK32_603 >>";
167 dink32_cmds.line_term = "\r";
168 dink32_cmds.target = &dink32_ops;
169 dink32_cmds.stopbits = SERIAL_1_STOPBITS;
170 dink32_cmds.regnames = dink32_regnames;
171 dink32_cmds.magic = MONITOR_OPS_MAGIC;
172
173 init_monitor_ops (&dink32_ops);
174
175 dink32_ops.to_shortname = "dink32";
176 dink32_ops.to_longname = "DINK32 monitor";
177 dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
178 Specify the serial device it is connected to (e.g. /dev/ttya).";
179 dink32_ops.to_open = dink32_open;
180
181 add_target (&dink32_ops);
182 }
183