1 /* Remote debugging interface to Xilinx MicroBlaze.
3 Copyright (C) 2009-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
28 void _initialize_picobug_rom (void);
30 static char *picobug_inits
[] =
33 static struct target_ops picobug_ops
;
34 static struct monitor_ops picobug_cmds
;
36 /* Picobug only supports a subset of registers from MCore. In reality,
37 it doesn't support ss1, either. */
38 static char *picobug_regnames
[] = {
39 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
40 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
41 0, 0, 0, 0, 0, 0, 0, 0,
42 0, 0, 0, 0, 0, 0, 0, 0,
43 "psr", "vbr", "epsr", "fpsr", "epc", "fpc", 0, "ss1",
44 "ss2", "ss3", "ss4", 0, 0, 0, 0, 0,
45 0, 0, 0, 0, 0, 0, 0, 0,
46 0, 0, 0, 0, 0, 0, 0, 0,
52 picobug_open (char *args
, int from_tty
)
54 monitor_open (args
, &picobug_cmds
, from_tty
);
56 /* We choose to write our own dumpregs routine, since the output of
57 the register dumping is rather difficult to encapsulate in a
61 pc 2f00031e epc 2f00031e fpc 00000000
62 psr 80000101 epsr 80000101 fpsr 00000000
63 ss0-ss4 bad0beef 00000000 00000000 00000000 00000000 vbr 30005c00
64 r0-r7 2f0fff4c 00000090 00000001 00000002 00000003 00000004 00000005 00000006
65 r8-r15 2f0fff64 00000000 00000000 00000000 00000000 00000000 00000000 2f00031e
69 picobug_dumpregs (struct regcache
*regcache
)
71 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
76 /* Send the dump register command to the monitor and
78 monitor_printf (picobug_cmds
.dump_registers
);
79 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
81 p
= strtok (buf
, " \t\r\n");
86 /* Got a range. Either r0-r7, r8-r15 or ss0-ss4. */
87 if (strncmp (p
, "r0", 2) == 0 || strncmp (p
, "r8", 2) == 0)
89 int rn
= (p
[1] == '0' ? 0 : 8);
92 /* Get the next 8 values and record them. */
95 p
= strtok (NULL
, " \t\r\n");
97 monitor_supply_register (regcache
, rn
+ i
, p
);
101 else if (strncmp (p
, "ss", 2) == 0)
103 /* Get the next five values, ignoring the first. */
105 p
= strtok (NULL
, " \t\r\n");
106 for (rn
= 39; rn
< 43; rn
++)
108 p
= strtok (NULL
, " \t\r\n");
110 monitor_supply_register (regcache
, rn
, p
);
120 /* Simple register type, paired. */
124 /* Get and record value. */
125 p
= strtok (NULL
, " \t\r\n");
128 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
130 if (picobug_regnames
[i
]
131 && strcmp (picobug_regnames
[i
], name
) == 0)
135 if (i
<= gdbarch_num_regs (gdbarch
))
136 monitor_supply_register (regcache
, i
, p
);
139 p
= strtok (NULL
, " \t\r\n");
146 init_picobug_cmds (void)
148 picobug_cmds
.flags
= MO_GETMEM_NEEDS_RANGE
| MO_CLR_BREAK_USES_ADDR
149 | MO_PRINT_PROGRAM_OUTPUT
;
151 picobug_cmds
.init
= picobug_inits
; /* Init strings */
152 picobug_cmds
.cont
= "g\n"; /* continue command */
153 picobug_cmds
.step
= "s\n"; /* single step */
154 picobug_cmds
.set_break
= "br %x\n"; /* set a breakpoint */
155 picobug_cmds
.clr_break
= "nobr %x\n"; /* clear a breakpoint */
156 picobug_cmds
.clr_all_break
= "nobr\n"; /* clear all breakpoints */
157 picobug_cmds
.setmem
.cmdb
= "mm %x %x ;b\n"; /* setmem.cmdb (addr, value) */
158 picobug_cmds
.setmem
.cmdw
= "mm %x %x ;h\n"; /* setmem.cmdw (addr, value) */
159 picobug_cmds
.setmem
.cmdl
= "mm %x %x ;w\n"; /* setmem.cmdl (addr, value) */
160 picobug_cmds
.getmem
.cmdb
= "md %x %x\n"; /* getmem.cmdb (start addr,
162 picobug_cmds
.getmem
.resp_delim
= ":"; /* getmem.resp_delim */
163 picobug_cmds
.setreg
.cmd
= "rm %s %x\n"; /* setreg.cmd (name, value) */
164 picobug_cmds
.getreg
.cmd
= "rd %s\n"; /* getreg.cmd (name) */
165 picobug_cmds
.getreg
.resp_delim
= ":"; /* getreg.resp_delim */
166 picobug_cmds
.dump_registers
= "rd\n"; /* dump_registers */
167 picobug_cmds
.dumpregs
= picobug_dumpregs
; /* dump registers parser */
168 picobug_cmds
.load
= "lo\n"; /* download command */
169 picobug_cmds
.prompt
= "picobug> "; /* monitor command prompt */
170 picobug_cmds
.line_term
= "\n"; /* end-of-line terminator */
171 picobug_cmds
.target
= &picobug_ops
; /* target operations */
172 picobug_cmds
.stopbits
= SERIAL_1_STOPBITS
; /* number of stop bits */
173 picobug_cmds
.regnames
= picobug_regnames
; /* registers names */
174 picobug_cmds
.num_breakpoints
= 20; /* number of breakpoints */
175 picobug_cmds
.magic
= MONITOR_OPS_MAGIC
; /* magic */
179 _initialize_picobug_rom (void)
183 /* Initialize m32r RevC monitor target. */
184 init_picobug_cmds ();
185 init_monitor_ops (&picobug_ops
);
186 picobug_ops
.to_shortname
= "picobug";
187 picobug_ops
.to_longname
= "picobug monitor";
188 picobug_ops
.to_doc
= "Debug via the picobug monitor.\n\
189 Specify the serial device it is connected to (e.g. /dev/ttya).";
190 picobug_ops
.to_open
= picobug_open
;
192 add_target (&picobug_ops
);
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