Commit | Line | Data |
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4e772f44 SG |
1 | /* Generic serial interface routines |
2 | Copyright 1992, 1993 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "serial.h" | |
22 | ||
38dc5e12 | 23 | /* Linked list of serial I/O handlers */ |
4e772f44 SG |
24 | |
25 | static struct serial_ops *serial_ops_list = NULL; | |
26 | ||
38dc5e12 SG |
27 | /* This is the last serial stream opened. Used by connect command. */ |
28 | ||
29 | static serial_t last_serial_opened = NULL; | |
30 | ||
4e772f44 SG |
31 | static struct serial_ops * |
32 | serial_interface_lookup (name) | |
33 | char *name; | |
34 | { | |
35 | struct serial_ops *ops; | |
36 | ||
37 | for (ops = serial_ops_list; ops; ops = ops->next) | |
38 | if (strcmp (name, ops->name) == 0) | |
39 | return ops; | |
40 | ||
41 | return NULL; | |
42 | } | |
43 | ||
44 | void | |
45 | serial_add_interface(optable) | |
46 | struct serial_ops *optable; | |
47 | { | |
48 | optable->next = serial_ops_list; | |
49 | serial_ops_list = optable; | |
50 | } | |
51 | ||
38dc5e12 SG |
52 | /* Open up a device or a network socket, depending upon the syntax of NAME. */ |
53 | ||
4e772f44 SG |
54 | serial_t |
55 | serial_open(name) | |
56 | const char *name; | |
57 | { | |
58 | serial_t scb; | |
59 | struct serial_ops *ops; | |
60 | ||
38dc5e12 SG |
61 | if (strchr (name, ':')) |
62 | ops = serial_interface_lookup ("tcp"); | |
63 | else | |
64 | ops = serial_interface_lookup ("hardwire"); | |
4e772f44 SG |
65 | |
66 | if (!ops) | |
67 | return NULL; | |
68 | ||
69 | scb = (serial_t)xmalloc (sizeof (struct _serial_t)); | |
70 | ||
71 | scb->ops = ops; | |
72 | ||
73 | scb->bufcnt = 0; | |
74 | scb->bufp = scb->buf; | |
75 | ||
4febd102 | 76 | if (scb->ops->open(scb, name)) |
4e772f44 SG |
77 | { |
78 | free (scb); | |
79 | return NULL; | |
80 | } | |
81 | ||
38dc5e12 SG |
82 | last_serial_opened = scb; |
83 | ||
84 | return scb; | |
85 | } | |
86 | ||
87 | serial_t | |
88 | serial_fdopen(fd) | |
89 | const int fd; | |
90 | { | |
91 | serial_t scb; | |
92 | struct serial_ops *ops; | |
93 | ||
94 | ops = serial_interface_lookup ("hardwire"); | |
95 | ||
96 | if (!ops) | |
97 | return NULL; | |
98 | ||
99 | scb = (serial_t)xmalloc (sizeof (struct _serial_t)); | |
100 | ||
101 | scb->ops = ops; | |
102 | ||
103 | scb->bufcnt = 0; | |
104 | scb->bufp = scb->buf; | |
105 | ||
106 | scb->fd = fd; | |
107 | ||
108 | last_serial_opened = scb; | |
109 | ||
4e772f44 SG |
110 | return scb; |
111 | } | |
112 | ||
4febd102 SG |
113 | void |
114 | serial_close(scb) | |
115 | serial_t scb; | |
116 | { | |
38dc5e12 SG |
117 | last_serial_opened = NULL; |
118 | ||
4febd102 SG |
119 | scb->ops->close(scb); |
120 | ||
121 | free(scb); | |
122 | } | |
123 | ||
4e772f44 | 124 | #if 0 |
38dc5e12 | 125 | |
4e772f44 SG |
126 | /* Connect the user directly to the remote system. This command acts just like |
127 | the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ | |
128 | ||
38dc5e12 SG |
129 | static serial_t tty_desc; /* Controlling terminal */ |
130 | ||
4e772f44 SG |
131 | static void |
132 | cleanup_tty(ttystate) | |
38dc5e12 | 133 | serial_ttystate ttystate; |
4e772f44 | 134 | { |
38dc5e12 SG |
135 | printf ("\r\n[Exiting connect mode]\r\n"); |
136 | SERIAL_SET_TTY_STATE (tty_desc, ttystate); | |
137 | free (ttystate); | |
138 | SERIAL_CLOSE (tty_desc); | |
4e772f44 SG |
139 | } |
140 | ||
141 | static void | |
142 | connect_command (args, fromtty) | |
143 | char *args; | |
144 | int fromtty; | |
145 | { | |
4e772f44 SG |
146 | int c; |
147 | char cur_esc = 0; | |
38dc5e12 SG |
148 | serial_ttystate ttystate; |
149 | serial_t port_desc; /* TTY port */ | |
4e772f44 SG |
150 | |
151 | dont_repeat(); | |
152 | ||
4e772f44 | 153 | if (args) |
38dc5e12 | 154 | fprintf(stderr, "This command takes no args. They have been ignored.\n"); |
4e772f44 SG |
155 | |
156 | printf("[Entering connect mode. Use ~. or ~^D to escape]\n"); | |
157 | ||
38dc5e12 SG |
158 | tty_desc = SERIAL_FDOPEN (0); |
159 | port_desc = last_serial_opened; | |
4e772f44 | 160 | |
38dc5e12 | 161 | ttystate = SERIAL_GET_TTY_STATE (tty_desc); |
4e772f44 | 162 | |
38dc5e12 SG |
163 | SERIAL_RAW (tty_desc); |
164 | SERIAL_RAW (port_desc); | |
165 | ||
166 | make_cleanup (cleanup_tty, ttystate); | |
4e772f44 SG |
167 | |
168 | while (1) | |
169 | { | |
38dc5e12 | 170 | int mask; |
4e772f44 | 171 | |
38dc5e12 | 172 | mask = SERIAL_WAIT_2 (tty_desc, port_desc, -1); |
4e772f44 | 173 | |
38dc5e12 SG |
174 | if (mask & 2) |
175 | { /* tty input */ | |
4e772f44 SG |
176 | char cx; |
177 | ||
38dc5e12 | 178 | while (1) |
4e772f44 | 179 | { |
38dc5e12 SG |
180 | c = SERIAL_READCHAR(tty_desc, 0); |
181 | ||
182 | if (c == SERIAL_TIMEOUT) | |
183 | break; | |
184 | ||
185 | if (c < 0) | |
186 | perror_with_name("connect"); | |
187 | ||
188 | cx = c; | |
189 | SERIAL_WRITE(port_desc, &cx, 1); | |
190 | ||
191 | switch (cur_esc) | |
192 | { | |
193 | case 0: | |
194 | if (c == '\r') | |
195 | cur_esc = c; | |
196 | break; | |
197 | case '\r': | |
198 | if (c == '~') | |
199 | cur_esc = c; | |
200 | else | |
201 | cur_esc = 0; | |
202 | break; | |
203 | case '~': | |
204 | if (c == '.' || c == '\004') | |
205 | return; | |
206 | else | |
207 | cur_esc = 0; | |
208 | } | |
4e772f44 SG |
209 | } |
210 | } | |
211 | ||
38dc5e12 SG |
212 | if (mask & 1) |
213 | { /* Port input */ | |
214 | char cx; | |
215 | ||
4e772f44 SG |
216 | while (1) |
217 | { | |
38dc5e12 SG |
218 | c = SERIAL_READCHAR(port_desc, 0); |
219 | ||
220 | if (c == SERIAL_TIMEOUT) | |
221 | break; | |
222 | ||
4e772f44 | 223 | if (c < 0) |
38dc5e12 SG |
224 | perror_with_name("connect"); |
225 | ||
226 | cx = c; | |
227 | ||
228 | SERIAL_WRITE(tty_desc, &cx, 1); | |
4e772f44 | 229 | } |
4e772f44 SG |
230 | } |
231 | } | |
232 | } | |
4e772f44 | 233 | |
4e772f44 SG |
234 | void |
235 | _initialize_serial () | |
236 | { | |
237 | add_com ("connect", class_obscure, connect_command, | |
238 | "Connect the terminal directly up to the command monitor.\n\ | |
239 | Use <CR>~. or <CR>~^D to break out."); | |
240 | } | |
38dc5e12 | 241 | #endif /* 0 */ |