Commit | Line | Data |
---|---|---|
c906108c SS |
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 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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. | |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b JM |
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. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include <fcntl.h> | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
30 | #include "wait.h" | |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
36 | ||
37 | #include "dcache.h" | |
38 | ||
39 | #ifdef USG | |
40 | #include <sys/types.h> | |
41 | #endif | |
42 | ||
43 | #include <signal.h> | |
44 | #include "serial.h" | |
45 | ||
46 | /* Prototypes for local functions */ | |
47 | ||
392a587b JM |
48 | extern void _initialize_remote_d10v PARAMS ((void)); |
49 | ||
c906108c SS |
50 | static void remote_d10v_open PARAMS ((char *name, int from_tty)); |
51 | ||
52 | /* Define the target subroutine names */ | |
53 | static struct target_ops remote_d10v_ops; | |
54 | ||
55 | /* Open a connection to a remote debugger. | |
56 | NAME is the filename used for communication. */ | |
57 | ||
58 | static void | |
59 | remote_d10v_open (name, from_tty) | |
60 | char *name; | |
61 | int from_tty; | |
62 | { | |
63 | pop_target (); | |
64 | push_remote_target (name, from_tty); | |
65 | } | |
66 | ||
67 | ||
68 | /* Translate a GDB virtual ADDR/LEN into a format the remote target | |
69 | understands. Returns number of bytes that can be transfered | |
70 | starting at taddr, ZERO if no bytes can be transfered. */ | |
392a587b JM |
71 | void |
72 | remote_d10v_translate_xfer_address (memaddr, nr_bytes, targ_addr, targ_len) | |
c906108c SS |
73 | CORE_ADDR memaddr; |
74 | int nr_bytes; | |
392a587b JM |
75 | CORE_ADDR *targ_addr; |
76 | int *targ_len; | |
c906108c SS |
77 | { |
78 | CORE_ADDR phys; | |
79 | CORE_ADDR seg; | |
80 | CORE_ADDR off; | |
81 | char *from = "unknown"; | |
82 | char *to = "unknown"; | |
83 | unsigned short imap0 = read_register (IMAP0_REGNUM); | |
84 | unsigned short imap1 = read_register (IMAP1_REGNUM); | |
85 | unsigned short dmap = read_register (DMAP_REGNUM); | |
86 | ||
87 | /* GDB interprets addresses as: | |
88 | ||
c5aa993b JM |
89 | 0x00xxxxxx: Logical data address segment (DMAP translated memory) |
90 | 0x01xxxxxx: Logical instruction address segment (IMAP translated memory) | |
91 | 0x10xxxxxx: Physical data memory segment (On-chip data memory) | |
92 | 0x11xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
93 | 0x12xxxxxx: Phisical unified memory segment (Unified memory) | |
c906108c SS |
94 | |
95 | The remote d10v board interprets addresses as: | |
96 | ||
c5aa993b JM |
97 | 0x00xxxxxx: Phisical unified memory segment (Unified memory) |
98 | 0x01xxxxxx: Physical instruction memory segment (On-chip insn memory) | |
99 | 0x02xxxxxx: Physical data memory segment (On-chip data memory) | |
c906108c SS |
100 | |
101 | Translate according to current IMAP/dmap registers */ | |
102 | ||
c5aa993b JM |
103 | enum |
104 | { | |
105 | targ_unified = 0x00000000, | |
106 | targ_insn = 0x01000000, | |
107 | targ_data = 0x02000000, | |
108 | }; | |
c906108c SS |
109 | |
110 | seg = (memaddr >> 24); | |
111 | off = (memaddr & 0xffffffL); | |
112 | ||
c5aa993b JM |
113 | switch (seg) |
114 | { | |
115 | case 0x00: /* in logical data address segment */ | |
c906108c | 116 | { |
c5aa993b JM |
117 | from = "logical-data"; |
118 | if (off <= 0x7fffL) | |
119 | { | |
120 | /* On chip data */ | |
121 | phys = targ_data + off; | |
122 | if (off + nr_bytes > 0x7fffL) | |
c906108c | 123 | /* don't cross VM boundary */ |
c5aa993b JM |
124 | nr_bytes = 0x7fffL - off + 1; |
125 | to = "chip-data"; | |
126 | } | |
127 | else if (off <= 0xbfffL) | |
128 | { | |
129 | short map = dmap; | |
130 | if (map & 0x1000) | |
131 | { | |
132 | /* Instruction memory */ | |
133 | phys = targ_insn | ((map & 0xf) << 14) | (off & 0x3fff); | |
134 | to = "chip-insn"; | |
135 | } | |
136 | else | |
137 | { | |
138 | /* Unified memory */ | |
139 | phys = targ_unified | ((map & 0x3ff) << 14) | (off & 0x3fff); | |
140 | to = "unified"; | |
141 | } | |
142 | if (off + nr_bytes > 0xbfffL) | |
143 | /* don't cross VM boundary */ | |
144 | nr_bytes = (0xbfffL - off + 1); | |
145 | } | |
146 | else | |
147 | { | |
148 | /* Logical address out side of data segments, not supported */ | |
149 | *targ_len = 0; | |
150 | return; | |
151 | } | |
c906108c | 152 | break; |
c5aa993b | 153 | } |
c906108c | 154 | |
c5aa993b JM |
155 | case 0x01: /* in logical instruction address segment */ |
156 | { | |
157 | short map; | |
158 | from = "logical-insn"; | |
159 | if (off <= 0x1ffffL) | |
160 | { | |
161 | map = imap0; | |
162 | } | |
163 | else if (off <= 0x3ffffL) | |
164 | { | |
165 | map = imap1; | |
166 | } | |
167 | else | |
168 | { | |
169 | /* Logical address outside of IMAP[01] segment, not | |
170 | supported */ | |
171 | *targ_len = 0; | |
172 | return; | |
173 | } | |
174 | if ((off & 0x1ffff) + nr_bytes > 0x1ffffL) | |
175 | { | |
176 | /* don't cross VM boundary */ | |
177 | nr_bytes = 0x1ffffL - (off & 0x1ffffL) + 1; | |
178 | } | |
179 | if (map & 0x1000) | |
180 | /* Instruction memory */ | |
181 | { | |
182 | phys = targ_insn | off; | |
183 | to = "chip-insn"; | |
184 | } | |
185 | else | |
186 | { | |
187 | phys = ((map & 0x7fL) << 17) + (off & 0x1ffffL); | |
188 | if (phys > 0xffffffL) | |
189 | { | |
190 | /* Address outside of unified address segment */ | |
191 | *targ_len = 0; | |
192 | return; | |
193 | } | |
194 | phys |= targ_unified; | |
195 | to = "unified"; | |
196 | } | |
c906108c | 197 | break; |
c906108c SS |
198 | } |
199 | ||
c5aa993b JM |
200 | case 0x10: /* Physical data memory segment */ |
201 | from = "phys-data"; | |
202 | phys = targ_data | off; | |
203 | to = "chip-data"; | |
204 | break; | |
205 | ||
206 | case 0x11: /* Physical instruction memory */ | |
207 | from = "phys-insn"; | |
208 | phys = targ_insn | off; | |
209 | to = "chip-insn"; | |
210 | break; | |
211 | ||
212 | case 0x12: /* Physical unified memory */ | |
213 | from = "phys-unified"; | |
214 | phys = targ_unified | off; | |
215 | to = "unified"; | |
216 | break; | |
217 | ||
218 | default: | |
219 | *targ_len = 0; | |
220 | return; | |
221 | } | |
222 | ||
c906108c | 223 | |
392a587b JM |
224 | *targ_addr = phys; |
225 | *targ_len = nr_bytes; | |
c906108c SS |
226 | } |
227 | ||
228 | ||
229 | void | |
230 | _initialize_remote_d10v () | |
231 | { | |
232 | remote_d10v_ops.to_shortname = "d10v"; | |
233 | remote_d10v_ops.to_longname = "Remote d10v serial target in gdb-specific protocol"; | |
234 | remote_d10v_ops.to_doc = "Use a remote d10v via a serial line, using a gdb-specific protocol.\n\ | |
235 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
236 | remote_d10v_ops.to_open = remote_d10v_open; | |
237 | ||
238 | add_target (&remote_d10v_ops); | |
239 | } |