Commit | Line | Data |
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c906108c | 1 | /* Remote serial interface for Macraigor Systems implementation of |
c5aa993b | 2 | On-Chip Debugging using serial target box or serial wiggler |
c906108c SS |
3 | |
4 | Copyright 1994, 1997 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 2 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, write to the Free Software | |
c5aa993b JM |
20 | Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "serial.h" | |
25 | ||
26 | #ifdef _WIN32 | |
27 | #include <windows.h> | |
28 | #endif | |
29 | ||
30 | static int ser_ocd_open PARAMS ((serial_t scb, const char *name)); | |
31 | static void ser_ocd_raw PARAMS ((serial_t scb)); | |
32 | static int ser_ocd_readchar PARAMS ((serial_t scb, int timeout)); | |
33 | static int ser_ocd_setbaudrate PARAMS ((serial_t scb, int rate)); | |
34 | static int ser_ocd_write PARAMS ((serial_t scb, const char *str, int len)); | |
35 | static void ser_ocd_close PARAMS ((serial_t scb)); | |
36 | static serial_ttystate ser_ocd_get_tty_state PARAMS ((serial_t scb)); | |
37 | static int ser_ocd_set_tty_state PARAMS ((serial_t scb, serial_ttystate state)); | |
38 | ||
39 | #ifdef _WIN32 | |
40 | /* On Windows, this function pointer is initialized to a function in | |
41 | the wiggler DLL. */ | |
42 | static int (*dll_do_command) PARAMS ((const char *, char *)); | |
43 | #endif | |
44 | ||
45 | static int | |
46 | ocd_open (scb, name) | |
47 | serial_t scb; | |
48 | const char *name; | |
49 | { | |
50 | #ifdef _WIN32 | |
51 | /* Find the wiggler DLL which talks to the board. */ | |
52 | if (dll_do_command == NULL) | |
53 | { | |
54 | HINSTANCE handle; | |
55 | ||
56 | /* FIXME: Should the user be able to configure this? */ | |
57 | handle = LoadLibrary ("Wigglers.dll"); | |
58 | if (handle == NULL) | |
59 | error ("Can't load Wigglers.dll"); | |
60 | ||
c5aa993b | 61 | dll_do_command = ((int (*)PARAMS ((const char *, char *))) |
c906108c SS |
62 | GetProcAddress (handle, "do_command")); |
63 | if (dll_do_command == NULL) | |
64 | error ("Can't find do_command function in Wigglers.dll"); | |
65 | } | |
66 | #else | |
67 | /* No wiggler DLLs on Unix yet, fail. */ | |
68 | error ("Wiggler library not available for this type of host."); | |
69 | #endif /* _WIN32 */ | |
70 | return 0; | |
71 | } | |
72 | ||
73 | static int | |
74 | ocd_noop (scb) | |
75 | serial_t scb; | |
76 | { | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static void | |
81 | ocd_raw (scb) | |
82 | serial_t scb; | |
83 | { | |
84 | /* Always in raw mode */ | |
85 | } | |
86 | ||
87 | static void | |
88 | ocd_readremote () | |
89 | { | |
90 | } | |
91 | ||
92 | /* We need a buffer to store responses from the Wigglers.dll */ | |
93 | #define WIGGLER_BUFF_SIZE 512 | |
94 | unsigned char from_wiggler_buffer[WIGGLER_BUFF_SIZE]; | |
c5aa993b | 95 | unsigned char *wiggler_buffer_ptr; /* curr spot in buffer */ |
c906108c SS |
96 | |
97 | static int | |
98 | ocd_readchar (scb, timeout) | |
99 | serial_t scb; | |
100 | int timeout; | |
101 | { | |
102 | /* Catch attempts at reading past the end of the buffer */ | |
103 | if (wiggler_buffer_ptr > | |
c5aa993b JM |
104 | (from_wiggler_buffer + (sizeof (char *) * WIGGLER_BUFF_SIZE))) |
105 | error ("ocd_readchar asked to read past the end of the buffer!"); | |
c906108c | 106 | |
c5aa993b | 107 | return (int) *wiggler_buffer_ptr++; /* return curr char and increment ptr */ |
c906108c SS |
108 | } |
109 | ||
c5aa993b JM |
110 | struct ocd_ttystate |
111 | { | |
c906108c SS |
112 | int dummy; |
113 | }; | |
114 | ||
115 | /* ocd_{get set}_tty_state() are both dummys to fill out the function | |
116 | vector. Someday, they may do something real... */ | |
117 | ||
118 | static serial_ttystate | |
119 | ocd_get_tty_state (scb) | |
120 | serial_t scb; | |
121 | { | |
122 | struct ocd_ttystate *state; | |
123 | ||
124 | state = (struct ocd_ttystate *) xmalloc (sizeof *state); | |
125 | ||
126 | return (serial_ttystate) state; | |
127 | } | |
128 | ||
129 | static int | |
130 | ocd_set_tty_state (scb, ttystate) | |
131 | serial_t scb; | |
132 | serial_ttystate ttystate; | |
133 | { | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static int | |
138 | ocd_noflush_set_tty_state (scb, new_ttystate, old_ttystate) | |
139 | serial_t scb; | |
140 | serial_ttystate new_ttystate; | |
141 | serial_ttystate old_ttystate; | |
142 | { | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static void | |
147 | ocd_print_tty_state (scb, ttystate) | |
148 | serial_t scb; | |
149 | serial_ttystate ttystate; | |
150 | { | |
151 | /* Nothing to print. */ | |
152 | return; | |
153 | } | |
154 | ||
155 | static int | |
156 | ocd_setbaudrate (scb, rate) | |
157 | serial_t scb; | |
158 | int rate; | |
159 | { | |
160 | return 0; | |
161 | } | |
162 | ||
163 | static int | |
164 | ocd_write (scb, str, len) | |
165 | serial_t scb; | |
166 | const char *str; | |
167 | int len; | |
168 | { | |
169 | char c; | |
170 | ||
c5aa993b | 171 | #ifdef _WIN32 |
c906108c | 172 | /* send packet to Wigglers.dll and store response so we can give it to |
c5aa993b | 173 | remote-wiggler.c when get_packet is run */ |
c906108c SS |
174 | dll_do_command (str, from_wiggler_buffer); |
175 | wiggler_buffer_ptr = from_wiggler_buffer; | |
176 | #endif | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static void | |
182 | ocd_close (scb) | |
183 | serial_t scb; | |
184 | { | |
185 | } | |
186 | ||
187 | static struct serial_ops ocd_ops = | |
188 | { | |
189 | "ocd", | |
190 | 0, | |
191 | ocd_open, | |
192 | ocd_close, | |
193 | ocd_readchar, | |
194 | ocd_write, | |
c5aa993b JM |
195 | ocd_noop, /* flush output */ |
196 | ocd_noop, /* flush input */ | |
197 | ocd_noop, /* send break -- currently used only for nindy */ | |
c906108c SS |
198 | ocd_raw, |
199 | ocd_get_tty_state, | |
200 | ocd_set_tty_state, | |
201 | ocd_print_tty_state, | |
202 | ocd_noflush_set_tty_state, | |
203 | ocd_setbaudrate, | |
c5aa993b | 204 | ocd_noop, /* wait for output to drain */ |
c906108c SS |
205 | }; |
206 | ||
207 | void | |
208 | _initialize_ser_ocd_bdm () | |
209 | { | |
210 | serial_add_interface (&ocd_ops); | |
211 | } |