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