1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
2 GDB, the GNU debugger.
3 Copyright 1997, 1999, 2000, 2001 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 "symfile.h" /* For generic_load() */
28 #include "inferior.h" /* For write_pc() */
29 #include "regcache.h"
30
31 static void dink32_open (char *args, int from_tty);
32
33 static void
dink32_supply_register(char * regname,int regnamelen,char * val,int vallen)34 dink32_supply_register (char *regname, 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 (regno, val);
97 }
98
99 /* This array of registers needs to match the indexes used by GDB. The
100 whole reason this exists is because the various ROM monitors use
101 different names than GDB does, and don't support all the registers
102 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 | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK | MO_SREC_ACK_ROTATE;
138 dink32_cmds.init = dink32_inits;
139 dink32_cmds.cont = "go +\r";
140 dink32_cmds.step = "tr +\r";
141 dink32_cmds.set_break = "bp 0x%x\r";
142 dink32_cmds.clr_break = "bp %d\r";
143 #if 0 /* Would need to follow strict alignment rules.. */
144 dink32_cmds.fill = "mf %x %x %x\r";
145 #endif
146 dink32_cmds.setmem.cmdb = "mm -b %x\r";
147 dink32_cmds.setmem.cmdw = "mm -w %x\r";
148 dink32_cmds.setmem.cmdl = "mm %x\r";
149 dink32_cmds.setmem.term = " ? ";
150 dink32_cmds.getmem.cmdb = "md %x\r";
151 dink32_cmds.getmem.resp_delim = " ";
152 dink32_cmds.setreg.cmd = "rm %s\r";
153 dink32_cmds.setreg.term = " ? ";
154 dink32_cmds.getreg.cmd = "rd %s\r";
155 dink32_cmds.getreg.resp_delim = ": ";
156 dink32_cmds.dump_registers = "rd r\r";
157 dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
158 dink32_cmds.supply_register = dink32_supply_register;
159 /* S-record download, via "keyboard port". */
160 dink32_cmds.load = "dl -k\r";
161 dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
162 dink32_cmds.prompt = "DINK32_603 >>";
163 dink32_cmds.line_term = "\r";
164 dink32_cmds.target = &dink32_ops;
165 dink32_cmds.stopbits = SERIAL_1_STOPBITS;
166 dink32_cmds.regnames = dink32_regnames;
167 dink32_cmds.magic = MONITOR_OPS_MAGIC;
168
169 init_monitor_ops (&dink32_ops);
170
171 dink32_ops.to_shortname = "dink32";
172 dink32_ops.to_longname = "DINK32 monitor";
173 dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
174 Specify the serial device it is connected to (e.g. /dev/ttya).";
175 dink32_ops.to_open = dink32_open;
176
177 add_target (&dink32_ops);
178 }
179