Commit | Line | Data |
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0c3ab0a1 AC |
1 | /* Remote target communications for d10v connected via a serial line. |
2 | Copyright 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997 Free | |
3 | 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, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "gdb_string.h" | |
23 | #include <fcntl.h> | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "bfd.h" | |
27 | #include "symfile.h" | |
28 | #include "target.h" | |
29 | #include "wait.h" | |
30 | /*#include "terminal.h"*/ | |
31 | #include "gdbcmd.h" | |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
35 | ||
36 | #include "dcache.h" | |
37 | ||
38 | #ifdef USG | |
39 | #include <sys/types.h> | |
40 | #endif | |
41 | ||
42 | #include <signal.h> | |
43 | #include "serial.h" | |
44 | ||
45 | /* Prototypes for local functions */ | |
46 | ||
0c3ab0a1 AC |
47 | static void remote_d10v_open PARAMS ((char *name, int from_tty)); |
48 | ||
0c3ab0a1 | 49 | /* Define the target subroutine names */ |
6c3beaaf | 50 | static struct target_ops remote_d10v_ops; |
0c3ab0a1 AC |
51 | |
52 | /* Open a connection to a remote debugger. | |
53 | NAME is the filename used for communication. */ | |
54 | ||
55 | static void | |
56 | remote_d10v_open (name, from_tty) | |
57 | char *name; | |
58 | int from_tty; | |
59 | { | |
6c3beaaf AC |
60 | pop_target (); |
61 | push_remote_target (name, from_tty); | |
0c3ab0a1 AC |
62 | } |
63 | ||
64 | ||
6c3beaaf AC |
65 | /* Translate a GDB virtual ADDR/LEN into a format the remote target |
66 | understands. Returns number of bytes that can be transfered | |
67 | starting at taddr, ZERO if no bytes can be transfered. */ | |
68 | int | |
69 | remote_d10v_translate_xfer_address (memaddr, nr_bytes, taddr) | |
0c3ab0a1 | 70 | CORE_ADDR memaddr; |
0c3ab0a1 | 71 | int nr_bytes; |
6c3beaaf | 72 | CORE_ADDR *taddr; |
0c3ab0a1 AC |
73 | { |
74 | CORE_ADDR phys; | |
75 | CORE_ADDR seg; | |
76 | CORE_ADDR off; | |
77 | char *from = "unknown"; | |
78 | char *to = "unknown"; | |
79 | unsigned short imap0 = read_register (IMAP0_REGNUM); | |
80 | unsigned short imap1 = read_register (IMAP1_REGNUM); | |
81 | unsigned short dmap = read_register (DMAP_REGNUM); | |
82 | ||
83 | /* GDB interprets addresses as: | |
84 | ||
85 | 0x00xxxxxx: Logical data address segment (DMAP translated memory) | |
86 | 0x01xxxxxx: Logical instruction address segment (IMAP translated memory) | |
87 | 0x10xxxxxx: Physical data memory segment (On-chip data memory) | |
88 | 0x11xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
89 | 0x12xxxxxx: Phisical unified memory segment (Unified memory) | |
90 | ||
91 | The remote d10v board interprets addresses as: | |
92 | ||
93 | 0x00xxxxxx: Phisical unified memory segment (Unified memory) | |
94 | 0x01xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
95 | 0x02xxxxxx: Physical data memory segment (On-chip data memory) | |
96 | ||
97 | Translate according to current IMAP/dmap registers */ | |
98 | ||
99 | enum { | |
100 | targ_unified = 0x00000000, | |
101 | targ_insn = 0x01000000, | |
102 | targ_data = 0x02000000, | |
103 | }; | |
104 | ||
105 | seg = (memaddr >> 24); | |
106 | off = (memaddr & 0xffffffL); | |
107 | ||
108 | switch (seg) | |
109 | { | |
110 | case 0x00: /* in logical data address segment */ | |
111 | { | |
112 | from = "logical-data"; | |
113 | if (off <= 0x7fffL) | |
114 | { | |
115 | /* On chip data */ | |
116 | phys = targ_data + off; | |
117 | if (off + nr_bytes > 0x7fffL) | |
118 | /* don't cross VM boundary */ | |
119 | nr_bytes = 0x7fffL - off + 1; | |
120 | to = "chip-data"; | |
121 | } | |
122 | else if (off <= 0xbfffL) | |
123 | { | |
124 | short map = dmap; | |
125 | if (map & 0x1000) | |
126 | { | |
127 | /* Instruction memory */ | |
128 | phys = targ_insn | ((map & 0xf) << 14) | (off & 0x3fff); | |
129 | to = "chip-insn"; | |
130 | } | |
131 | else | |
132 | { | |
133 | /* Unified memory */ | |
134 | phys = targ_unified | ((map & 0x3ff) << 14) | (off & 0x3fff); | |
135 | to = "unified"; | |
136 | } | |
137 | if (off + nr_bytes > 0xbfffL) | |
138 | /* don't cross VM boundary */ | |
139 | nr_bytes = (0xbfffL - off + 1); | |
140 | } | |
141 | else | |
142 | { | |
143 | /* Logical address out side of data segments, not supported */ | |
144 | return (0); | |
145 | } | |
146 | break; | |
147 | } | |
148 | ||
149 | case 0x01: /* in logical instruction address segment */ | |
150 | { | |
151 | short map; | |
152 | from = "logical-insn"; | |
153 | if (off <= 0x1ffffL) | |
154 | { | |
155 | map = imap0; | |
156 | } | |
157 | else if (off <= 0x3ffffL) | |
158 | { | |
159 | map = imap1; | |
160 | } | |
161 | else | |
162 | { | |
163 | /* Logical address outside of IMAP[01] segment, not | |
164 | supported */ | |
165 | return (0); | |
166 | } | |
167 | if ((off & 0x1ffff) + nr_bytes > 0x1ffffL) | |
168 | { | |
169 | /* don't cross VM boundary */ | |
170 | nr_bytes = 0x1ffffL - (off & 0x1ffffL) + 1; | |
171 | } | |
172 | if (map & 0x1000) | |
173 | /* Instruction memory */ | |
174 | { | |
175 | phys = targ_insn | off; | |
176 | to = "chip-insn"; | |
177 | } | |
178 | else | |
179 | { | |
180 | phys = ((map & 0x7fL) << 17) + (off & 0x1ffffL); | |
181 | if (phys > 0xffffffL) | |
182 | /* Address outside of unified address segment */ | |
183 | return (0); | |
184 | phys |= targ_unified; | |
185 | to = "unified"; | |
186 | } | |
187 | break; | |
188 | } | |
189 | ||
190 | case 0x10: /* Physical data memory segment */ | |
191 | from = "phys-data"; | |
192 | phys = targ_data | off; | |
193 | to = "chip-data"; | |
194 | break; | |
195 | ||
196 | case 0x11: /* Physical instruction memory */ | |
197 | from = "phys-insn"; | |
198 | phys = targ_insn | off; | |
199 | to = "chip-insn"; | |
200 | break; | |
201 | ||
202 | case 0x12: /* Physical unified memory */ | |
203 | from = "phys-unified"; | |
204 | phys = targ_unified | off; | |
205 | to = "unified"; | |
206 | break; | |
207 | ||
208 | default: | |
209 | return (0); | |
210 | } | |
211 | ||
212 | ||
6c3beaaf AC |
213 | *taddr = phys; |
214 | return nr_bytes; | |
0c3ab0a1 AC |
215 | } |
216 | ||
217 | ||
218 | void | |
219 | _initialize_remote_d10v () | |
220 | { | |
6c3beaaf AC |
221 | remote_d10v_ops.to_shortname = "d10v"; |
222 | remote_d10v_ops.to_longname = "Remote d10v serial target in gdb-specific protocol"; | |
223 | remote_d10v_ops.to_doc = "Use a remote d10v via a serial line, using a gdb-specific protocol.\n\ | |
224 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
225 | remote_d10v_ops.to_open = remote_d10v_open; | |
226 | ||
0c3ab0a1 AC |
227 | add_target (&remote_d10v_ops); |
228 | } |