Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for MIPS remote debugging protocol. |
0a65a603 | 2 | |
6aba47ca | 3 | Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
4c38e0a4 | 4 | 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
0a65a603 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support. Written by Ian Lance Taylor |
7 | <ian@cygnus.com>. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "inferior.h" | |
26 | #include "bfd.h" | |
27 | #include "symfile.h" | |
c906108c SS |
28 | #include "gdbcmd.h" |
29 | #include "gdbcore.h" | |
30 | #include "serial.h" | |
31 | #include "target.h" | |
60250e8b | 32 | #include "exceptions.h" |
c906108c | 33 | #include "gdb_string.h" |
ba79cc81 | 34 | #include "gdb_stat.h" |
4e052eda | 35 | #include "regcache.h" |
59d521c1 | 36 | #include <ctype.h> |
56cea623 | 37 | #include "mips-tdep.h" |
8eeafb51 | 38 | #include "gdbthread.h" |
c906108c | 39 | \f |
c5aa993b | 40 | |
c906108c SS |
41 | /* Breakpoint types. Values 0, 1, and 2 must agree with the watch |
42 | types passed by breakpoint.c to target_insert_watchpoint. | |
43 | Value 3 is our own invention, and is used for ordinary instruction | |
44 | breakpoints. Value 4 is used to mark an unused watchpoint in tables. */ | |
c5aa993b JM |
45 | enum break_type |
46 | { | |
47 | BREAK_WRITE, /* 0 */ | |
48 | BREAK_READ, /* 1 */ | |
49 | BREAK_ACCESS, /* 2 */ | |
50 | BREAK_FETCH, /* 3 */ | |
51 | BREAK_UNUSED /* 4 */ | |
52 | }; | |
c906108c SS |
53 | |
54 | /* Prototypes for local functions. */ | |
55 | ||
a14ed312 | 56 | static int mips_readchar (int timeout); |
c906108c | 57 | |
a14ed312 KB |
58 | static int mips_receive_header (unsigned char *hdr, int *pgarbage, |
59 | int ch, int timeout); | |
c906108c | 60 | |
a14ed312 KB |
61 | static int mips_receive_trailer (unsigned char *trlr, int *pgarbage, |
62 | int *pch, int timeout); | |
c906108c | 63 | |
a14ed312 KB |
64 | static int mips_cksum (const unsigned char *hdr, |
65 | const unsigned char *data, int len); | |
c906108c | 66 | |
a14ed312 | 67 | static void mips_send_packet (const char *s, int get_ack); |
c906108c | 68 | |
a14ed312 | 69 | static void mips_send_command (const char *cmd, int prompt); |
c906108c | 70 | |
a14ed312 | 71 | static int mips_receive_packet (char *buff, int throw_error, int timeout); |
c906108c | 72 | |
4014092b AC |
73 | static ULONGEST mips_request (int cmd, ULONGEST addr, ULONGEST data, |
74 | int *perr, int timeout, char *buff); | |
c906108c | 75 | |
a14ed312 | 76 | static void mips_initialize (void); |
c906108c | 77 | |
a14ed312 | 78 | static void mips_open (char *name, int from_tty); |
c906108c | 79 | |
a14ed312 | 80 | static void pmon_open (char *name, int from_tty); |
c906108c | 81 | |
a14ed312 | 82 | static void ddb_open (char *name, int from_tty); |
c906108c | 83 | |
a14ed312 | 84 | static void lsi_open (char *name, int from_tty); |
c906108c | 85 | |
a14ed312 | 86 | static void mips_close (int quitting); |
c906108c | 87 | |
136d6dae | 88 | static void mips_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 89 | |
74ed0bb4 | 90 | static int mips_map_regno (struct gdbarch *, int); |
c906108c | 91 | |
bbd2783e KB |
92 | static void mips_set_register (int regno, ULONGEST value); |
93 | ||
316f2060 | 94 | static void mips_prepare_to_store (struct regcache *regcache); |
c906108c | 95 | |
8cfa2c71 | 96 | static int mips_fetch_word (CORE_ADDR addr, unsigned int *valp); |
c906108c | 97 | |
a14ed312 | 98 | static int mips_store_word (CORE_ADDR addr, unsigned int value, |
e17a4113 | 99 | int *old_contents); |
c906108c | 100 | |
7d12900b | 101 | static int mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
29e57380 C |
102 | int write, |
103 | struct mem_attrib *attrib, | |
104 | struct target_ops *target); | |
c906108c | 105 | |
a14ed312 | 106 | static void mips_files_info (struct target_ops *ignore); |
c906108c | 107 | |
383c0389 | 108 | static void mips_mourn_inferior (struct target_ops *ops); |
c906108c | 109 | |
a14ed312 | 110 | static int pmon_makeb64 (unsigned long v, char *p, int n, int *chksum); |
c906108c | 111 | |
a14ed312 KB |
112 | static int pmon_zeroset (int recsize, char **buff, int *amount, |
113 | unsigned int *chksum); | |
c906108c | 114 | |
a14ed312 | 115 | static int pmon_checkset (int recsize, char **buff, int *value); |
c906108c | 116 | |
a14ed312 KB |
117 | static void pmon_make_fastrec (char **outbuf, unsigned char *inbuf, |
118 | int *inptr, int inamount, int *recsize, | |
119 | unsigned int *csum, unsigned int *zerofill); | |
c906108c | 120 | |
a14ed312 | 121 | static int pmon_check_ack (char *mesg); |
c906108c | 122 | |
a14ed312 | 123 | static void pmon_start_download (void); |
c906108c | 124 | |
a14ed312 | 125 | static void pmon_end_download (int final, int bintotal); |
c906108c | 126 | |
a14ed312 | 127 | static void pmon_download (char *buffer, int length); |
c906108c | 128 | |
a14ed312 | 129 | static void pmon_load_fast (char *file); |
c906108c | 130 | |
a14ed312 | 131 | static void mips_load (char *file, int from_tty); |
c906108c | 132 | |
a14ed312 KB |
133 | static int mips_make_srec (char *buffer, int type, CORE_ADDR memaddr, |
134 | unsigned char *myaddr, int len); | |
c906108c | 135 | |
06b1d59c | 136 | static int mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type); |
c906108c | 137 | |
06b1d59c MR |
138 | static int mips_clear_breakpoint (CORE_ADDR addr, int len, |
139 | enum break_type type); | |
c906108c | 140 | |
06b1d59c MR |
141 | static int mips_common_breakpoint (int set, CORE_ADDR addr, int len, |
142 | enum break_type type); | |
c906108c SS |
143 | |
144 | /* Forward declarations. */ | |
145 | extern struct target_ops mips_ops; | |
146 | extern struct target_ops pmon_ops; | |
147 | extern struct target_ops ddb_ops; | |
bbd2783e | 148 | extern struct target_ops rockhopper_ops; |
c5aa993b | 149 | \f/* *INDENT-OFF* */ |
c906108c SS |
150 | /* The MIPS remote debugging interface is built on top of a simple |
151 | packet protocol. Each packet is organized as follows: | |
152 | ||
c5aa993b JM |
153 | SYN The first character is always a SYN (ASCII 026, or ^V). SYN |
154 | may not appear anywhere else in the packet. Any time a SYN is | |
155 | seen, a new packet should be assumed to have begun. | |
c906108c SS |
156 | |
157 | TYPE_LEN | |
c5aa993b JM |
158 | This byte contains the upper five bits of the logical length |
159 | of the data section, plus a single bit indicating whether this | |
160 | is a data packet or an acknowledgement. The documentation | |
161 | indicates that this bit is 1 for a data packet, but the actual | |
162 | board uses 1 for an acknowledgement. The value of the byte is | |
163 | 0x40 + (ack ? 0x20 : 0) + (len >> 6) | |
164 | (we always have 0 <= len < 1024). Acknowledgement packets do | |
165 | not carry data, and must have a data length of 0. | |
c906108c SS |
166 | |
167 | LEN1 This byte contains the lower six bits of the logical length of | |
c5aa993b JM |
168 | the data section. The value is |
169 | 0x40 + (len & 0x3f) | |
170 | ||
171 | SEQ This byte contains the six bit sequence number of the packet. | |
172 | The value is | |
173 | 0x40 + seq | |
174 | An acknowlegment packet contains the sequence number of the | |
175 | packet being acknowledged plus 1 modulo 64. Data packets are | |
176 | transmitted in sequence. There may only be one outstanding | |
177 | unacknowledged data packet at a time. The sequence numbers | |
178 | are independent in each direction. If an acknowledgement for | |
179 | the previous packet is received (i.e., an acknowledgement with | |
180 | the sequence number of the packet just sent) the packet just | |
181 | sent should be retransmitted. If no acknowledgement is | |
182 | received within a timeout period, the packet should be | |
183 | retransmitted. This has an unfortunate failure condition on a | |
184 | high-latency line, as a delayed acknowledgement may lead to an | |
185 | endless series of duplicate packets. | |
186 | ||
187 | DATA The actual data bytes follow. The following characters are | |
188 | escaped inline with DLE (ASCII 020, or ^P): | |
189 | SYN (026) DLE S | |
190 | DLE (020) DLE D | |
191 | ^C (003) DLE C | |
192 | ^S (023) DLE s | |
193 | ^Q (021) DLE q | |
194 | The additional DLE characters are not counted in the logical | |
195 | length stored in the TYPE_LEN and LEN1 bytes. | |
c906108c SS |
196 | |
197 | CSUM1 | |
198 | CSUM2 | |
199 | CSUM3 | |
c5aa993b JM |
200 | These bytes contain an 18 bit checksum of the complete |
201 | contents of the packet excluding the SEQ byte and the | |
202 | CSUM[123] bytes. The checksum is simply the twos complement | |
203 | addition of all the bytes treated as unsigned characters. The | |
204 | values of the checksum bytes are: | |
205 | CSUM1: 0x40 + ((cksum >> 12) & 0x3f) | |
206 | CSUM2: 0x40 + ((cksum >> 6) & 0x3f) | |
207 | CSUM3: 0x40 + (cksum & 0x3f) | |
c906108c SS |
208 | |
209 | It happens that the MIPS remote debugging protocol always | |
210 | communicates with ASCII strings. Because of this, this | |
211 | implementation doesn't bother to handle the DLE quoting mechanism, | |
212 | since it will never be required. */ | |
9846de1b | 213 | /* *INDENT-ON* */ |
c906108c | 214 | |
c5aa993b | 215 | |
c906108c SS |
216 | /* The SYN character which starts each packet. */ |
217 | #define SYN '\026' | |
218 | ||
219 | /* The 0x40 used to offset each packet (this value ensures that all of | |
220 | the header and trailer bytes, other than SYN, are printable ASCII | |
221 | characters). */ | |
222 | #define HDR_OFFSET 0x40 | |
223 | ||
224 | /* The indices of the bytes in the packet header. */ | |
225 | #define HDR_INDX_SYN 0 | |
226 | #define HDR_INDX_TYPE_LEN 1 | |
227 | #define HDR_INDX_LEN1 2 | |
228 | #define HDR_INDX_SEQ 3 | |
229 | #define HDR_LENGTH 4 | |
230 | ||
231 | /* The data/ack bit in the TYPE_LEN header byte. */ | |
232 | #define TYPE_LEN_DA_BIT 0x20 | |
233 | #define TYPE_LEN_DATA 0 | |
234 | #define TYPE_LEN_ACK TYPE_LEN_DA_BIT | |
235 | ||
236 | /* How to compute the header bytes. */ | |
237 | #define HDR_SET_SYN(data, len, seq) (SYN) | |
238 | #define HDR_SET_TYPE_LEN(data, len, seq) \ | |
239 | (HDR_OFFSET \ | |
240 | + ((data) ? TYPE_LEN_DATA : TYPE_LEN_ACK) \ | |
241 | + (((len) >> 6) & 0x1f)) | |
242 | #define HDR_SET_LEN1(data, len, seq) (HDR_OFFSET + ((len) & 0x3f)) | |
243 | #define HDR_SET_SEQ(data, len, seq) (HDR_OFFSET + (seq)) | |
244 | ||
245 | /* Check that a header byte is reasonable. */ | |
246 | #define HDR_CHECK(ch) (((ch) & HDR_OFFSET) == HDR_OFFSET) | |
247 | ||
248 | /* Get data from the header. These macros evaluate their argument | |
249 | multiple times. */ | |
250 | #define HDR_IS_DATA(hdr) \ | |
251 | (((hdr)[HDR_INDX_TYPE_LEN] & TYPE_LEN_DA_BIT) == TYPE_LEN_DATA) | |
252 | #define HDR_GET_LEN(hdr) \ | |
253 | ((((hdr)[HDR_INDX_TYPE_LEN] & 0x1f) << 6) + (((hdr)[HDR_INDX_LEN1] & 0x3f))) | |
254 | #define HDR_GET_SEQ(hdr) ((unsigned int)(hdr)[HDR_INDX_SEQ] & 0x3f) | |
255 | ||
256 | /* The maximum data length. */ | |
257 | #define DATA_MAXLEN 1023 | |
258 | ||
259 | /* The trailer offset. */ | |
260 | #define TRLR_OFFSET HDR_OFFSET | |
261 | ||
262 | /* The indices of the bytes in the packet trailer. */ | |
263 | #define TRLR_INDX_CSUM1 0 | |
264 | #define TRLR_INDX_CSUM2 1 | |
265 | #define TRLR_INDX_CSUM3 2 | |
266 | #define TRLR_LENGTH 3 | |
267 | ||
268 | /* How to compute the trailer bytes. */ | |
269 | #define TRLR_SET_CSUM1(cksum) (TRLR_OFFSET + (((cksum) >> 12) & 0x3f)) | |
270 | #define TRLR_SET_CSUM2(cksum) (TRLR_OFFSET + (((cksum) >> 6) & 0x3f)) | |
271 | #define TRLR_SET_CSUM3(cksum) (TRLR_OFFSET + (((cksum) ) & 0x3f)) | |
272 | ||
273 | /* Check that a trailer byte is reasonable. */ | |
274 | #define TRLR_CHECK(ch) (((ch) & TRLR_OFFSET) == TRLR_OFFSET) | |
275 | ||
276 | /* Get data from the trailer. This evaluates its argument multiple | |
277 | times. */ | |
278 | #define TRLR_GET_CKSUM(trlr) \ | |
279 | ((((trlr)[TRLR_INDX_CSUM1] & 0x3f) << 12) \ | |
280 | + (((trlr)[TRLR_INDX_CSUM2] & 0x3f) << 6) \ | |
281 | + ((trlr)[TRLR_INDX_CSUM3] & 0x3f)) | |
282 | ||
283 | /* The sequence number modulos. */ | |
284 | #define SEQ_MODULOS (64) | |
285 | ||
286 | /* PMON commands to load from the serial port or UDP socket. */ | |
287 | #define LOAD_CMD "load -b -s tty0\r" | |
288 | #define LOAD_CMD_UDP "load -b -s udp\r" | |
289 | ||
290 | /* The target vectors for the four different remote MIPS targets. | |
291 | These are initialized with code in _initialize_remote_mips instead | |
292 | of static initializers, to make it easier to extend the target_ops | |
293 | vector later. */ | |
bbd2783e | 294 | struct target_ops mips_ops, pmon_ops, ddb_ops, rockhopper_ops, lsi_ops; |
c906108c | 295 | |
c5aa993b JM |
296 | enum mips_monitor_type |
297 | { | |
298 | /* IDT/SIM monitor being used: */ | |
299 | MON_IDT, | |
300 | /* PMON monitor being used: */ | |
301 | MON_PMON, /* 3.0.83 [COGENT,EB,FP,NET] Algorithmics Ltd. Nov 9 1995 17:19:50 */ | |
302 | MON_DDB, /* 2.7.473 [DDBVR4300,EL,FP,NET] Risq Modular Systems, Thu Jun 6 09:28:40 PDT 1996 */ | |
303 | MON_LSI, /* 4.3.12 [EB,FP], LSI LOGIC Corp. Tue Feb 25 13:22:14 1997 */ | |
bbd2783e | 304 | MON_ROCKHOPPER, |
c5aa993b JM |
305 | /* Last and unused value, for sizing vectors, etc. */ |
306 | MON_LAST | |
307 | }; | |
c906108c SS |
308 | static enum mips_monitor_type mips_monitor = MON_LAST; |
309 | ||
310 | /* The monitor prompt text. If the user sets the PMON prompt | |
311 | to some new value, the GDB `set monitor-prompt' command must also | |
312 | be used to inform GDB about the expected prompt. Otherwise, GDB | |
313 | will not be able to connect to PMON in mips_initialize(). | |
314 | If the `set monitor-prompt' command is not used, the expected | |
315 | default prompt will be set according the target: | |
c5aa993b JM |
316 | target prompt |
317 | ----- ----- | |
318 | pmon PMON> | |
319 | ddb NEC010> | |
320 | lsi PMON> | |
321 | */ | |
c906108c SS |
322 | static char *mips_monitor_prompt; |
323 | ||
324 | /* Set to 1 if the target is open. */ | |
325 | static int mips_is_open; | |
326 | ||
327 | /* Currently active target description (if mips_is_open == 1) */ | |
328 | static struct target_ops *current_ops; | |
329 | ||
330 | /* Set to 1 while the connection is being initialized. */ | |
331 | static int mips_initializing; | |
332 | ||
333 | /* Set to 1 while the connection is being brought down. */ | |
334 | static int mips_exiting; | |
335 | ||
336 | /* The next sequence number to send. */ | |
337 | static unsigned int mips_send_seq; | |
338 | ||
339 | /* The next sequence number we expect to receive. */ | |
340 | static unsigned int mips_receive_seq; | |
341 | ||
342 | /* The time to wait before retransmitting a packet, in seconds. */ | |
343 | static int mips_retransmit_wait = 3; | |
344 | ||
345 | /* The number of times to try retransmitting a packet before giving up. */ | |
346 | static int mips_send_retries = 10; | |
347 | ||
348 | /* The number of garbage characters to accept when looking for an | |
349 | SYN for the next packet. */ | |
59d521c1 | 350 | static int mips_syn_garbage = 10; |
c906108c SS |
351 | |
352 | /* The time to wait for a packet, in seconds. */ | |
353 | static int mips_receive_wait = 5; | |
354 | ||
355 | /* Set if we have sent a packet to the board but have not yet received | |
356 | a reply. */ | |
357 | static int mips_need_reply = 0; | |
358 | ||
359 | /* Handle used to access serial I/O stream. */ | |
819cc324 | 360 | static struct serial *mips_desc; |
c906108c SS |
361 | |
362 | /* UDP handle used to download files to target. */ | |
819cc324 | 363 | static struct serial *udp_desc; |
c906108c SS |
364 | static int udp_in_use; |
365 | ||
366 | /* TFTP filename used to download files to DDB board, in the form | |
367 | host:filename. */ | |
368 | static char *tftp_name; /* host:filename */ | |
369 | static char *tftp_localname; /* filename portion of above */ | |
370 | static int tftp_in_use; | |
371 | static FILE *tftp_file; | |
372 | ||
373 | /* Counts the number of times the user tried to interrupt the target (usually | |
374 | via ^C. */ | |
375 | static int interrupt_count; | |
376 | ||
377 | /* If non-zero, means that the target is running. */ | |
378 | static int mips_wait_flag = 0; | |
379 | ||
380 | /* If non-zero, monitor supports breakpoint commands. */ | |
d4f3574e | 381 | static int monitor_supports_breakpoints = 0; |
c906108c SS |
382 | |
383 | /* Data cache header. */ | |
384 | ||
c5aa993b | 385 | #if 0 /* not used (yet?) */ |
c906108c SS |
386 | static DCACHE *mips_dcache; |
387 | #endif | |
388 | ||
389 | /* Non-zero means that we've just hit a read or write watchpoint */ | |
390 | static int hit_watchpoint; | |
391 | ||
392 | /* Table of breakpoints/watchpoints (used only on LSI PMON target). | |
393 | The table is indexed by a breakpoint number, which is an integer | |
394 | from 0 to 255 returned by the LSI PMON when a breakpoint is set. | |
c5aa993b | 395 | */ |
c906108c SS |
396 | #define MAX_LSI_BREAKPOINTS 256 |
397 | struct lsi_breakpoint_info | |
c5aa993b JM |
398 | { |
399 | enum break_type type; /* type of breakpoint */ | |
400 | CORE_ADDR addr; /* address of breakpoint */ | |
401 | int len; /* length of region being watched */ | |
402 | unsigned long value; /* value to watch */ | |
403 | } | |
404 | lsi_breakpoints[MAX_LSI_BREAKPOINTS]; | |
c906108c SS |
405 | |
406 | /* Error/warning codes returned by LSI PMON for breakpoint commands. | |
407 | Warning values may be ORed together; error values may not. */ | |
c5aa993b JM |
408 | #define W_WARN 0x100 /* This bit is set if the error code is a warning */ |
409 | #define W_MSK 0x101 /* warning: Range feature is supported via mask */ | |
410 | #define W_VAL 0x102 /* warning: Value check is not supported in hardware */ | |
411 | #define W_QAL 0x104 /* warning: Requested qualifiers are not supported in hardware */ | |
412 | ||
413 | #define E_ERR 0x200 /* This bit is set if the error code is an error */ | |
414 | #define E_BPT 0x200 /* error: No such breakpoint number */ | |
415 | #define E_RGE 0x201 /* error: Range is not supported */ | |
416 | #define E_QAL 0x202 /* error: The requested qualifiers can not be used */ | |
417 | #define E_OUT 0x203 /* error: Out of hardware resources */ | |
418 | #define E_NON 0x204 /* error: Hardware breakpoint not supported */ | |
c906108c SS |
419 | |
420 | struct lsi_error | |
c5aa993b JM |
421 | { |
422 | int code; /* error code */ | |
423 | char *string; /* string associated with this code */ | |
424 | }; | |
c906108c SS |
425 | |
426 | struct lsi_error lsi_warning_table[] = | |
427 | { | |
c5aa993b JM |
428 | {W_MSK, "Range feature is supported via mask"}, |
429 | {W_VAL, "Value check is not supported in hardware"}, | |
430 | {W_QAL, "Requested qualifiers are not supported in hardware"}, | |
431 | {0, NULL} | |
c906108c SS |
432 | }; |
433 | ||
434 | struct lsi_error lsi_error_table[] = | |
c5aa993b JM |
435 | { |
436 | {E_BPT, "No such breakpoint number"}, | |
437 | {E_RGE, "Range is not supported"}, | |
438 | {E_QAL, "The requested qualifiers can not be used"}, | |
439 | {E_OUT, "Out of hardware resources"}, | |
440 | {E_NON, "Hardware breakpoint not supported"}, | |
441 | {0, NULL} | |
c906108c SS |
442 | }; |
443 | ||
444 | /* Set to 1 with the 'set monitor-warnings' command to enable printing | |
445 | of warnings returned by PMON when hardware breakpoints are used. */ | |
446 | static int monitor_warnings; | |
447 | ||
8eeafb51 KB |
448 | /* This is the ptid we use while we're connected to the remote. Its |
449 | value is arbitrary, as the remote-mips target doesn't have a notion of | |
450 | processes or threads, but we need something non-null to place in | |
451 | inferior_ptid. */ | |
452 | static ptid_t remote_mips_ptid; | |
c906108c | 453 | |
477c84a7 KB |
454 | /* Close any ports which might be open. Reset certain globals indicating |
455 | the state of those ports. */ | |
456 | ||
c906108c | 457 | static void |
fba45db2 | 458 | close_ports (void) |
c906108c SS |
459 | { |
460 | mips_is_open = 0; | |
2cd58942 | 461 | serial_close (mips_desc); |
c906108c SS |
462 | |
463 | if (udp_in_use) | |
464 | { | |
2cd58942 | 465 | serial_close (udp_desc); |
c906108c SS |
466 | udp_in_use = 0; |
467 | } | |
468 | tftp_in_use = 0; | |
469 | } | |
c5aa993b | 470 | |
c906108c SS |
471 | /* Handle low-level error that we can't recover from. Note that just |
472 | error()ing out from target_wait or some such low-level place will cause | |
473 | all hell to break loose--the rest of GDB will tend to get left in an | |
474 | inconsistent state. */ | |
475 | ||
476 | static NORETURN void | |
c5aa993b | 477 | mips_error (char *string,...) |
c906108c SS |
478 | { |
479 | va_list args; | |
480 | ||
c906108c | 481 | va_start (args, string); |
c5aa993b | 482 | |
c906108c | 483 | target_terminal_ours (); |
c5aa993b | 484 | wrap_here (""); /* Force out any buffered output */ |
c906108c SS |
485 | gdb_flush (gdb_stdout); |
486 | if (error_pre_print) | |
ab4e3d93 | 487 | fputs_filtered (error_pre_print, gdb_stderr); |
c906108c SS |
488 | vfprintf_filtered (gdb_stderr, string, args); |
489 | fprintf_filtered (gdb_stderr, "\n"); | |
490 | va_end (args); | |
491 | gdb_flush (gdb_stderr); | |
492 | ||
493 | /* Clean up in such a way that mips_close won't try to talk to the | |
494 | board (it almost surely won't work since we weren't able to talk to | |
495 | it). */ | |
496 | close_ports (); | |
497 | ||
498 | printf_unfiltered ("Ending remote MIPS debugging.\n"); | |
8eeafb51 KB |
499 | if (!ptid_equal (inferior_ptid, null_ptid)) |
500 | target_mourn_inferior (); | |
c906108c | 501 | |
315a522e | 502 | deprecated_throw_reason (RETURN_ERROR); |
c906108c SS |
503 | } |
504 | ||
505 | /* putc_readable - print a character, displaying non-printable chars in | |
506 | ^x notation or in hex. */ | |
507 | ||
508 | static void | |
fba45db2 | 509 | fputc_readable (int ch, struct ui_file *file) |
c906108c SS |
510 | { |
511 | if (ch == '\n') | |
9846de1b | 512 | fputc_unfiltered ('\n', file); |
c906108c | 513 | else if (ch == '\r') |
9846de1b | 514 | fprintf_unfiltered (file, "\\r"); |
c5aa993b | 515 | else if (ch < 0x20) /* ASCII control character */ |
9846de1b | 516 | fprintf_unfiltered (file, "^%c", ch + '@'); |
c5aa993b | 517 | else if (ch >= 0x7f) /* non-ASCII characters (rubout or greater) */ |
9846de1b | 518 | fprintf_unfiltered (file, "[%02x]", ch & 0xff); |
c906108c | 519 | else |
9846de1b | 520 | fputc_unfiltered (ch, file); |
c906108c SS |
521 | } |
522 | ||
523 | ||
524 | /* puts_readable - print a string, displaying non-printable chars in | |
525 | ^x notation or in hex. */ | |
526 | ||
527 | static void | |
98691afe | 528 | fputs_readable (const char *string, struct ui_file *file) |
c906108c SS |
529 | { |
530 | int c; | |
531 | ||
532 | while ((c = *string++) != '\0') | |
9846de1b | 533 | fputc_readable (c, file); |
c906108c SS |
534 | } |
535 | ||
536 | ||
bbd2783e KB |
537 | /* Read P as a hex value. Return true if every character made sense, |
538 | storing the result in *RESULT. Leave *RESULT unchanged otherwise. */ | |
539 | ||
540 | static int | |
541 | read_hex_value (const char *p, ULONGEST *result) | |
542 | { | |
543 | ULONGEST retval; | |
544 | ||
545 | retval = 0; | |
546 | while (*p != 0) | |
547 | { | |
548 | retval <<= 4; | |
549 | if (*p >= '0' && *p <= '9') | |
550 | retval |= *p - '0'; | |
551 | else if (*p >= 'A' && *p <= 'F') | |
552 | retval |= *p - 'A' + 10; | |
553 | else if (*p >= 'a' && *p <= 'f') | |
554 | retval |= *p - 'a' + 10; | |
555 | else | |
556 | return 0; | |
557 | p++; | |
558 | } | |
559 | *result = retval; | |
560 | return 1; | |
561 | } | |
562 | ||
563 | ||
c906108c SS |
564 | /* Wait until STRING shows up in mips_desc. Returns 1 if successful, else 0 if |
565 | timed out. TIMEOUT specifies timeout value in seconds. | |
c5aa993b | 566 | */ |
c906108c | 567 | |
a78f21af | 568 | static int |
98691afe | 569 | mips_expect_timeout (const char *string, int timeout) |
c906108c | 570 | { |
98691afe | 571 | const char *p = string; |
c906108c SS |
572 | |
573 | if (remote_debug) | |
574 | { | |
9846de1b JM |
575 | fprintf_unfiltered (gdb_stdlog, "Expected \""); |
576 | fputs_readable (string, gdb_stdlog); | |
577 | fprintf_unfiltered (gdb_stdlog, "\", got \""); | |
c906108c SS |
578 | } |
579 | ||
8edbea78 | 580 | immediate_quit++; |
c906108c SS |
581 | while (1) |
582 | { | |
583 | int c; | |
584 | ||
2cd58942 AC |
585 | /* Must use serial_readchar() here cuz mips_readchar would get |
586 | confused if we were waiting for the mips_monitor_prompt... */ | |
c906108c | 587 | |
2cd58942 | 588 | c = serial_readchar (mips_desc, timeout); |
c906108c SS |
589 | |
590 | if (c == SERIAL_TIMEOUT) | |
591 | { | |
592 | if (remote_debug) | |
9846de1b | 593 | fprintf_unfiltered (gdb_stdlog, "\": FAIL\n"); |
c906108c SS |
594 | return 0; |
595 | } | |
596 | ||
597 | if (remote_debug) | |
9846de1b | 598 | fputc_readable (c, gdb_stdlog); |
c906108c SS |
599 | |
600 | if (c == *p++) | |
c5aa993b | 601 | { |
c906108c SS |
602 | if (*p == '\0') |
603 | { | |
8edbea78 | 604 | immediate_quit--; |
c906108c | 605 | if (remote_debug) |
9846de1b | 606 | fprintf_unfiltered (gdb_stdlog, "\": OK\n"); |
c906108c SS |
607 | return 1; |
608 | } | |
609 | } | |
610 | else | |
611 | { | |
612 | p = string; | |
613 | if (c == *p) | |
614 | p++; | |
615 | } | |
616 | } | |
617 | } | |
618 | ||
619 | /* Wait until STRING shows up in mips_desc. Returns 1 if successful, else 0 if | |
620 | timed out. The timeout value is hard-coded to 2 seconds. Use | |
621 | mips_expect_timeout if a different timeout value is needed. | |
c5aa993b | 622 | */ |
c906108c | 623 | |
a78f21af | 624 | static int |
98691afe | 625 | mips_expect (const char *string) |
c906108c | 626 | { |
688991e6 | 627 | return mips_expect_timeout (string, remote_timeout); |
c906108c SS |
628 | } |
629 | ||
c906108c | 630 | /* Read a character from the remote, aborting on error. Returns |
2cd58942 AC |
631 | SERIAL_TIMEOUT on timeout (since that's what serial_readchar() |
632 | returns). FIXME: If we see the string mips_monitor_prompt from the | |
633 | board, then we are debugging on the main console port, and we have | |
634 | somehow dropped out of remote debugging mode. In this case, we | |
635 | automatically go back in to remote debugging mode. This is a hack, | |
636 | put in because I can't find any way for a program running on the | |
637 | remote board to terminate without also ending remote debugging | |
c906108c SS |
638 | mode. I assume users won't have any trouble with this; for one |
639 | thing, the IDT documentation generally assumes that the remote | |
640 | debugging port is not the console port. This is, however, very | |
641 | convenient for DejaGnu when you only have one connected serial | |
642 | port. */ | |
643 | ||
644 | static int | |
fba45db2 | 645 | mips_readchar (int timeout) |
c906108c SS |
646 | { |
647 | int ch; | |
648 | static int state = 0; | |
649 | int mips_monitor_prompt_len = strlen (mips_monitor_prompt); | |
650 | ||
c906108c SS |
651 | { |
652 | int i; | |
653 | ||
654 | i = timeout; | |
655 | if (i == -1 && watchdog > 0) | |
c5aa993b | 656 | i = watchdog; |
c906108c | 657 | } |
c906108c SS |
658 | |
659 | if (state == mips_monitor_prompt_len) | |
660 | timeout = 1; | |
2cd58942 | 661 | ch = serial_readchar (mips_desc, timeout); |
7a292a7a | 662 | |
c5aa993b | 663 | if (ch == SERIAL_TIMEOUT && timeout == -1) /* Watchdog went off */ |
c906108c SS |
664 | { |
665 | target_mourn_inferior (); | |
666 | error ("Watchdog has expired. Target detached.\n"); | |
667 | } | |
7a292a7a | 668 | |
c906108c SS |
669 | if (ch == SERIAL_EOF) |
670 | mips_error ("End of file from remote"); | |
671 | if (ch == SERIAL_ERROR) | |
672 | mips_error ("Error reading from remote: %s", safe_strerror (errno)); | |
673 | if (remote_debug > 1) | |
674 | { | |
675 | /* Don't use _filtered; we can't deal with a QUIT out of | |
c5aa993b | 676 | target_wait, and I think this might be called from there. */ |
c906108c | 677 | if (ch != SERIAL_TIMEOUT) |
9846de1b | 678 | fprintf_unfiltered (gdb_stdlog, "Read '%c' %d 0x%x\n", ch, ch, ch); |
c906108c | 679 | else |
9846de1b | 680 | fprintf_unfiltered (gdb_stdlog, "Timed out in read\n"); |
c906108c SS |
681 | } |
682 | ||
683 | /* If we have seen mips_monitor_prompt and we either time out, or | |
684 | we see a @ (which was echoed from a packet we sent), reset the | |
685 | board as described above. The first character in a packet after | |
686 | the SYN (which is not echoed) is always an @ unless the packet is | |
687 | more than 64 characters long, which ours never are. */ | |
688 | if ((ch == SERIAL_TIMEOUT || ch == '@') | |
689 | && state == mips_monitor_prompt_len | |
c5aa993b JM |
690 | && !mips_initializing |
691 | && !mips_exiting) | |
c906108c SS |
692 | { |
693 | if (remote_debug > 0) | |
694 | /* Don't use _filtered; we can't deal with a QUIT out of | |
695 | target_wait, and I think this might be called from there. */ | |
9846de1b | 696 | fprintf_unfiltered (gdb_stdlog, "Reinitializing MIPS debugging mode\n"); |
c906108c SS |
697 | |
698 | mips_need_reply = 0; | |
699 | mips_initialize (); | |
700 | ||
701 | state = 0; | |
702 | ||
703 | /* At this point, about the only thing we can do is abort the command | |
c5aa993b | 704 | in progress and get back to command level as quickly as possible. */ |
c906108c SS |
705 | |
706 | error ("Remote board reset, debug protocol re-initialized."); | |
707 | } | |
708 | ||
709 | if (ch == mips_monitor_prompt[state]) | |
710 | ++state; | |
711 | else | |
712 | state = 0; | |
713 | ||
714 | return ch; | |
715 | } | |
716 | ||
717 | /* Get a packet header, putting the data in the supplied buffer. | |
718 | PGARBAGE is a pointer to the number of garbage characters received | |
719 | so far. CH is the last character received. Returns 0 for success, | |
720 | or -1 for timeout. */ | |
721 | ||
722 | static int | |
fba45db2 | 723 | mips_receive_header (unsigned char *hdr, int *pgarbage, int ch, int timeout) |
c906108c SS |
724 | { |
725 | int i; | |
726 | ||
727 | while (1) | |
728 | { | |
729 | /* Wait for a SYN. mips_syn_garbage is intended to prevent | |
c5aa993b JM |
730 | sitting here indefinitely if the board sends us one garbage |
731 | character per second. ch may already have a value from the | |
732 | last time through the loop. */ | |
c906108c SS |
733 | while (ch != SYN) |
734 | { | |
735 | ch = mips_readchar (timeout); | |
736 | if (ch == SERIAL_TIMEOUT) | |
c5aa993b | 737 | return -1; |
c906108c SS |
738 | if (ch != SYN) |
739 | { | |
740 | /* Printing the character here lets the user of gdb see | |
c5aa993b | 741 | what the program is outputting, if the debugging is |
59d521c1 AC |
742 | being done on the console port. Don't use _filtered: |
743 | we can't deal with a QUIT out of target_wait and | |
744 | buffered target output confuses the user. */ | |
745 | if (!mips_initializing || remote_debug > 0) | |
746 | { | |
747 | if (isprint (ch) || isspace (ch)) | |
748 | { | |
749 | fputc_unfiltered (ch, gdb_stdtarg); | |
750 | } | |
751 | else | |
752 | { | |
753 | fputc_readable (ch, gdb_stdtarg); | |
754 | } | |
755 | gdb_flush (gdb_stdtarg); | |
756 | } | |
757 | ||
758 | /* Only count unprintable characters. */ | |
759 | if (! (isprint (ch) || isspace (ch))) | |
760 | (*pgarbage) += 1; | |
761 | ||
c906108c SS |
762 | if (mips_syn_garbage > 0 |
763 | && *pgarbage > mips_syn_garbage) | |
c5aa993b | 764 | mips_error ("Debug protocol failure: more than %d characters before a sync.", |
c906108c SS |
765 | mips_syn_garbage); |
766 | } | |
767 | } | |
768 | ||
769 | /* Get the packet header following the SYN. */ | |
770 | for (i = 1; i < HDR_LENGTH; i++) | |
771 | { | |
772 | ch = mips_readchar (timeout); | |
773 | if (ch == SERIAL_TIMEOUT) | |
c5aa993b | 774 | return -1; |
c906108c | 775 | /* Make sure this is a header byte. */ |
c5aa993b | 776 | if (ch == SYN || !HDR_CHECK (ch)) |
c906108c SS |
777 | break; |
778 | ||
779 | hdr[i] = ch; | |
780 | } | |
781 | ||
782 | /* If we got the complete header, we can return. Otherwise we | |
c5aa993b | 783 | loop around and keep looking for SYN. */ |
c906108c | 784 | if (i >= HDR_LENGTH) |
c5aa993b | 785 | return 0; |
c906108c SS |
786 | } |
787 | } | |
788 | ||
789 | /* Get a packet header, putting the data in the supplied buffer. | |
790 | PGARBAGE is a pointer to the number of garbage characters received | |
791 | so far. The last character read is returned in *PCH. Returns 0 | |
792 | for success, -1 for timeout, -2 for error. */ | |
793 | ||
794 | static int | |
fba45db2 | 795 | mips_receive_trailer (unsigned char *trlr, int *pgarbage, int *pch, int timeout) |
c906108c SS |
796 | { |
797 | int i; | |
798 | int ch; | |
799 | ||
800 | for (i = 0; i < TRLR_LENGTH; i++) | |
801 | { | |
802 | ch = mips_readchar (timeout); | |
803 | *pch = ch; | |
804 | if (ch == SERIAL_TIMEOUT) | |
805 | return -1; | |
c5aa993b | 806 | if (!TRLR_CHECK (ch)) |
c906108c SS |
807 | return -2; |
808 | trlr[i] = ch; | |
809 | } | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* Get the checksum of a packet. HDR points to the packet header. | |
814 | DATA points to the packet data. LEN is the length of DATA. */ | |
815 | ||
816 | static int | |
fba45db2 | 817 | mips_cksum (const unsigned char *hdr, const unsigned char *data, int len) |
c906108c | 818 | { |
52f0bd74 AC |
819 | const unsigned char *p; |
820 | int c; | |
821 | int cksum; | |
c906108c SS |
822 | |
823 | cksum = 0; | |
824 | ||
825 | /* The initial SYN is not included in the checksum. */ | |
826 | c = HDR_LENGTH - 1; | |
827 | p = hdr + 1; | |
828 | while (c-- != 0) | |
829 | cksum += *p++; | |
c5aa993b | 830 | |
c906108c SS |
831 | c = len; |
832 | p = data; | |
833 | while (c-- != 0) | |
834 | cksum += *p++; | |
835 | ||
836 | return cksum; | |
837 | } | |
838 | ||
839 | /* Send a packet containing the given ASCII string. */ | |
840 | ||
841 | static void | |
fba45db2 | 842 | mips_send_packet (const char *s, int get_ack) |
c906108c SS |
843 | { |
844 | /* unsigned */ int len; | |
845 | unsigned char *packet; | |
52f0bd74 | 846 | int cksum; |
c906108c SS |
847 | int try; |
848 | ||
849 | len = strlen (s); | |
850 | if (len > DATA_MAXLEN) | |
851 | mips_error ("MIPS protocol data packet too long: %s", s); | |
852 | ||
853 | packet = (unsigned char *) alloca (HDR_LENGTH + len + TRLR_LENGTH + 1); | |
854 | ||
855 | packet[HDR_INDX_SYN] = HDR_SET_SYN (1, len, mips_send_seq); | |
856 | packet[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (1, len, mips_send_seq); | |
857 | packet[HDR_INDX_LEN1] = HDR_SET_LEN1 (1, len, mips_send_seq); | |
858 | packet[HDR_INDX_SEQ] = HDR_SET_SEQ (1, len, mips_send_seq); | |
859 | ||
860 | memcpy (packet + HDR_LENGTH, s, len); | |
861 | ||
862 | cksum = mips_cksum (packet, packet + HDR_LENGTH, len); | |
863 | packet[HDR_LENGTH + len + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum); | |
864 | packet[HDR_LENGTH + len + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum); | |
865 | packet[HDR_LENGTH + len + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum); | |
866 | ||
867 | /* Increment the sequence number. This will set mips_send_seq to | |
868 | the sequence number we expect in the acknowledgement. */ | |
869 | mips_send_seq = (mips_send_seq + 1) % SEQ_MODULOS; | |
870 | ||
871 | /* We can only have one outstanding data packet, so we just wait for | |
872 | the acknowledgement here. Keep retransmitting the packet until | |
873 | we get one, or until we've tried too many times. */ | |
874 | for (try = 0; try < mips_send_retries; try++) | |
875 | { | |
876 | int garbage; | |
877 | int ch; | |
878 | ||
879 | if (remote_debug > 0) | |
880 | { | |
881 | /* Don't use _filtered; we can't deal with a QUIT out of | |
882 | target_wait, and I think this might be called from there. */ | |
883 | packet[HDR_LENGTH + len + TRLR_LENGTH] = '\0'; | |
9846de1b | 884 | fprintf_unfiltered (gdb_stdlog, "Writing \"%s\"\n", packet + 1); |
c906108c SS |
885 | } |
886 | ||
2cd58942 | 887 | if (serial_write (mips_desc, packet, |
c906108c SS |
888 | HDR_LENGTH + len + TRLR_LENGTH) != 0) |
889 | mips_error ("write to target failed: %s", safe_strerror (errno)); | |
890 | ||
c5aa993b | 891 | if (!get_ack) |
c906108c SS |
892 | return; |
893 | ||
894 | garbage = 0; | |
895 | ch = 0; | |
896 | while (1) | |
897 | { | |
898 | unsigned char hdr[HDR_LENGTH + 1]; | |
899 | unsigned char trlr[TRLR_LENGTH + 1]; | |
900 | int err; | |
901 | unsigned int seq; | |
902 | ||
903 | /* Get the packet header. If we time out, resend the data | |
904 | packet. */ | |
905 | err = mips_receive_header (hdr, &garbage, ch, mips_retransmit_wait); | |
906 | if (err != 0) | |
907 | break; | |
908 | ||
909 | ch = 0; | |
910 | ||
911 | /* If we get a data packet, assume it is a duplicate and | |
912 | ignore it. FIXME: If the acknowledgement is lost, this | |
913 | data packet may be the packet the remote sends after the | |
914 | acknowledgement. */ | |
c5aa993b JM |
915 | if (HDR_IS_DATA (hdr)) |
916 | { | |
917 | int i; | |
918 | ||
919 | /* Ignore any errors raised whilst attempting to ignore | |
920 | packet. */ | |
921 | ||
922 | len = HDR_GET_LEN (hdr); | |
923 | ||
924 | for (i = 0; i < len; i++) | |
925 | { | |
926 | int rch; | |
927 | ||
688991e6 | 928 | rch = mips_readchar (remote_timeout); |
c5aa993b JM |
929 | if (rch == SYN) |
930 | { | |
931 | ch = SYN; | |
932 | break; | |
933 | } | |
934 | if (rch == SERIAL_TIMEOUT) | |
935 | break; | |
936 | /* ignore the character */ | |
937 | } | |
938 | ||
939 | if (i == len) | |
688991e6 AC |
940 | (void) mips_receive_trailer (trlr, &garbage, &ch, |
941 | remote_timeout); | |
c5aa993b JM |
942 | |
943 | /* We don't bother checking the checksum, or providing an | |
944 | ACK to the packet. */ | |
945 | continue; | |
946 | } | |
c906108c SS |
947 | |
948 | /* If the length is not 0, this is a garbled packet. */ | |
949 | if (HDR_GET_LEN (hdr) != 0) | |
950 | continue; | |
951 | ||
952 | /* Get the packet trailer. */ | |
953 | err = mips_receive_trailer (trlr, &garbage, &ch, | |
954 | mips_retransmit_wait); | |
955 | ||
956 | /* If we timed out, resend the data packet. */ | |
957 | if (err == -1) | |
958 | break; | |
959 | ||
960 | /* If we got a bad character, reread the header. */ | |
961 | if (err != 0) | |
962 | continue; | |
963 | ||
964 | /* If the checksum does not match the trailer checksum, this | |
965 | is a bad packet; ignore it. */ | |
966 | if (mips_cksum (hdr, (unsigned char *) NULL, 0) | |
967 | != TRLR_GET_CKSUM (trlr)) | |
968 | continue; | |
969 | ||
970 | if (remote_debug > 0) | |
971 | { | |
972 | hdr[HDR_LENGTH] = '\0'; | |
973 | trlr[TRLR_LENGTH] = '\0'; | |
974 | /* Don't use _filtered; we can't deal with a QUIT out of | |
c5aa993b | 975 | target_wait, and I think this might be called from there. */ |
9846de1b JM |
976 | fprintf_unfiltered (gdb_stdlog, "Got ack %d \"%s%s\"\n", |
977 | HDR_GET_SEQ (hdr), hdr + 1, trlr); | |
c906108c SS |
978 | } |
979 | ||
980 | /* If this ack is for the current packet, we're done. */ | |
981 | seq = HDR_GET_SEQ (hdr); | |
982 | if (seq == mips_send_seq) | |
983 | return; | |
984 | ||
985 | /* If this ack is for the last packet, resend the current | |
986 | packet. */ | |
987 | if ((seq + 1) % SEQ_MODULOS == mips_send_seq) | |
988 | break; | |
989 | ||
990 | /* Otherwise this is a bad ack; ignore it. Increment the | |
991 | garbage count to ensure that we do not stay in this loop | |
992 | forever. */ | |
993 | ++garbage; | |
994 | } | |
995 | } | |
996 | ||
997 | mips_error ("Remote did not acknowledge packet"); | |
998 | } | |
999 | ||
1000 | /* Receive and acknowledge a packet, returning the data in BUFF (which | |
1001 | should be DATA_MAXLEN + 1 bytes). The protocol documentation | |
1002 | implies that only the sender retransmits packets, so this code just | |
1003 | waits silently for a packet. It returns the length of the received | |
1004 | packet. If THROW_ERROR is nonzero, call error() on errors. If not, | |
1005 | don't print an error message and return -1. */ | |
1006 | ||
1007 | static int | |
fba45db2 | 1008 | mips_receive_packet (char *buff, int throw_error, int timeout) |
c906108c SS |
1009 | { |
1010 | int ch; | |
1011 | int garbage; | |
1012 | int len; | |
1013 | unsigned char ack[HDR_LENGTH + TRLR_LENGTH + 1]; | |
1014 | int cksum; | |
1015 | ||
1016 | ch = 0; | |
1017 | garbage = 0; | |
1018 | while (1) | |
1019 | { | |
1020 | unsigned char hdr[HDR_LENGTH]; | |
1021 | unsigned char trlr[TRLR_LENGTH]; | |
1022 | int i; | |
1023 | int err; | |
1024 | ||
1025 | if (mips_receive_header (hdr, &garbage, ch, timeout) != 0) | |
1026 | { | |
1027 | if (throw_error) | |
1028 | mips_error ("Timed out waiting for remote packet"); | |
1029 | else | |
1030 | return -1; | |
1031 | } | |
1032 | ||
1033 | ch = 0; | |
1034 | ||
1035 | /* An acknowledgement is probably a duplicate; ignore it. */ | |
c5aa993b | 1036 | if (!HDR_IS_DATA (hdr)) |
c906108c | 1037 | { |
c5aa993b JM |
1038 | len = HDR_GET_LEN (hdr); |
1039 | /* Check if the length is valid for an ACK, we may aswell | |
1040 | try and read the remainder of the packet: */ | |
1041 | if (len == 0) | |
1042 | { | |
1043 | /* Ignore the error condition, since we are going to | |
1044 | ignore the packet anyway. */ | |
1045 | (void) mips_receive_trailer (trlr, &garbage, &ch, timeout); | |
1046 | } | |
c906108c SS |
1047 | /* Don't use _filtered; we can't deal with a QUIT out of |
1048 | target_wait, and I think this might be called from there. */ | |
1049 | if (remote_debug > 0) | |
9846de1b | 1050 | fprintf_unfiltered (gdb_stdlog, "Ignoring unexpected ACK\n"); |
c906108c SS |
1051 | continue; |
1052 | } | |
1053 | ||
1054 | len = HDR_GET_LEN (hdr); | |
1055 | for (i = 0; i < len; i++) | |
1056 | { | |
1057 | int rch; | |
1058 | ||
1059 | rch = mips_readchar (timeout); | |
1060 | if (rch == SYN) | |
1061 | { | |
1062 | ch = SYN; | |
1063 | break; | |
1064 | } | |
1065 | if (rch == SERIAL_TIMEOUT) | |
1066 | { | |
1067 | if (throw_error) | |
1068 | mips_error ("Timed out waiting for remote packet"); | |
1069 | else | |
1070 | return -1; | |
1071 | } | |
1072 | buff[i] = rch; | |
1073 | } | |
1074 | ||
1075 | if (i < len) | |
1076 | { | |
1077 | /* Don't use _filtered; we can't deal with a QUIT out of | |
1078 | target_wait, and I think this might be called from there. */ | |
1079 | if (remote_debug > 0) | |
9846de1b JM |
1080 | fprintf_unfiltered (gdb_stdlog, |
1081 | "Got new SYN after %d chars (wanted %d)\n", | |
1082 | i, len); | |
c906108c SS |
1083 | continue; |
1084 | } | |
1085 | ||
1086 | err = mips_receive_trailer (trlr, &garbage, &ch, timeout); | |
1087 | if (err == -1) | |
1088 | { | |
1089 | if (throw_error) | |
1090 | mips_error ("Timed out waiting for packet"); | |
1091 | else | |
1092 | return -1; | |
1093 | } | |
1094 | if (err == -2) | |
1095 | { | |
1096 | /* Don't use _filtered; we can't deal with a QUIT out of | |
1097 | target_wait, and I think this might be called from there. */ | |
1098 | if (remote_debug > 0) | |
9846de1b | 1099 | fprintf_unfiltered (gdb_stdlog, "Got SYN when wanted trailer\n"); |
c906108c SS |
1100 | continue; |
1101 | } | |
1102 | ||
1103 | /* If this is the wrong sequence number, ignore it. */ | |
1104 | if (HDR_GET_SEQ (hdr) != mips_receive_seq) | |
1105 | { | |
1106 | /* Don't use _filtered; we can't deal with a QUIT out of | |
1107 | target_wait, and I think this might be called from there. */ | |
1108 | if (remote_debug > 0) | |
9846de1b | 1109 | fprintf_unfiltered (gdb_stdlog, |
c5aa993b JM |
1110 | "Ignoring sequence number %d (want %d)\n", |
1111 | HDR_GET_SEQ (hdr), mips_receive_seq); | |
c906108c SS |
1112 | continue; |
1113 | } | |
1114 | ||
1115 | if (mips_cksum (hdr, buff, len) == TRLR_GET_CKSUM (trlr)) | |
c5aa993b | 1116 | break; |
c906108c SS |
1117 | |
1118 | if (remote_debug > 0) | |
1119 | /* Don't use _filtered; we can't deal with a QUIT out of | |
1120 | target_wait, and I think this might be called from there. */ | |
1121 | printf_unfiltered ("Bad checksum; data %d, trailer %d\n", | |
c5aa993b JM |
1122 | mips_cksum (hdr, buff, len), |
1123 | TRLR_GET_CKSUM (trlr)); | |
c906108c SS |
1124 | |
1125 | /* The checksum failed. Send an acknowledgement for the | |
c5aa993b | 1126 | previous packet to tell the remote to resend the packet. */ |
c906108c SS |
1127 | ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq); |
1128 | ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq); | |
1129 | ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq); | |
1130 | ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq); | |
1131 | ||
1132 | cksum = mips_cksum (ack, (unsigned char *) NULL, 0); | |
1133 | ||
1134 | ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum); | |
1135 | ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum); | |
1136 | ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum); | |
1137 | ||
1138 | if (remote_debug > 0) | |
1139 | { | |
1140 | ack[HDR_LENGTH + TRLR_LENGTH] = '\0'; | |
1141 | /* Don't use _filtered; we can't deal with a QUIT out of | |
1142 | target_wait, and I think this might be called from there. */ | |
1143 | printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq, | |
c5aa993b | 1144 | ack + 1); |
c906108c SS |
1145 | } |
1146 | ||
2cd58942 | 1147 | if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0) |
c906108c SS |
1148 | { |
1149 | if (throw_error) | |
1150 | mips_error ("write to target failed: %s", safe_strerror (errno)); | |
1151 | else | |
1152 | return -1; | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | if (remote_debug > 0) | |
1157 | { | |
1158 | buff[len] = '\0'; | |
1159 | /* Don't use _filtered; we can't deal with a QUIT out of | |
c5aa993b | 1160 | target_wait, and I think this might be called from there. */ |
c906108c SS |
1161 | printf_unfiltered ("Got packet \"%s\"\n", buff); |
1162 | } | |
1163 | ||
1164 | /* We got the packet. Send an acknowledgement. */ | |
1165 | mips_receive_seq = (mips_receive_seq + 1) % SEQ_MODULOS; | |
1166 | ||
1167 | ack[HDR_INDX_SYN] = HDR_SET_SYN (0, 0, mips_receive_seq); | |
1168 | ack[HDR_INDX_TYPE_LEN] = HDR_SET_TYPE_LEN (0, 0, mips_receive_seq); | |
1169 | ack[HDR_INDX_LEN1] = HDR_SET_LEN1 (0, 0, mips_receive_seq); | |
1170 | ack[HDR_INDX_SEQ] = HDR_SET_SEQ (0, 0, mips_receive_seq); | |
1171 | ||
1172 | cksum = mips_cksum (ack, (unsigned char *) NULL, 0); | |
1173 | ||
1174 | ack[HDR_LENGTH + TRLR_INDX_CSUM1] = TRLR_SET_CSUM1 (cksum); | |
1175 | ack[HDR_LENGTH + TRLR_INDX_CSUM2] = TRLR_SET_CSUM2 (cksum); | |
1176 | ack[HDR_LENGTH + TRLR_INDX_CSUM3] = TRLR_SET_CSUM3 (cksum); | |
1177 | ||
1178 | if (remote_debug > 0) | |
1179 | { | |
1180 | ack[HDR_LENGTH + TRLR_LENGTH] = '\0'; | |
1181 | /* Don't use _filtered; we can't deal with a QUIT out of | |
c5aa993b | 1182 | target_wait, and I think this might be called from there. */ |
c906108c | 1183 | printf_unfiltered ("Writing ack %d \"%s\"\n", mips_receive_seq, |
c5aa993b | 1184 | ack + 1); |
c906108c SS |
1185 | } |
1186 | ||
2cd58942 | 1187 | if (serial_write (mips_desc, ack, HDR_LENGTH + TRLR_LENGTH) != 0) |
c906108c SS |
1188 | { |
1189 | if (throw_error) | |
1190 | mips_error ("write to target failed: %s", safe_strerror (errno)); | |
1191 | else | |
1192 | return -1; | |
1193 | } | |
1194 | ||
1195 | return len; | |
1196 | } | |
1197 | \f | |
1198 | /* Optionally send a request to the remote system and optionally wait | |
1199 | for the reply. This implements the remote debugging protocol, | |
1200 | which is built on top of the packet protocol defined above. Each | |
1201 | request has an ADDR argument and a DATA argument. The following | |
1202 | requests are defined: | |
1203 | ||
c5aa993b JM |
1204 | \0 don't send a request; just wait for a reply |
1205 | i read word from instruction space at ADDR | |
1206 | d read word from data space at ADDR | |
1207 | I write DATA to instruction space at ADDR | |
1208 | D write DATA to data space at ADDR | |
1209 | r read register number ADDR | |
1210 | R set register number ADDR to value DATA | |
1211 | c continue execution (if ADDR != 1, set pc to ADDR) | |
1212 | s single step (if ADDR != 1, set pc to ADDR) | |
c906108c SS |
1213 | |
1214 | The read requests return the value requested. The write requests | |
1215 | return the previous value in the changed location. The execution | |
1216 | requests return a UNIX wait value (the approximate signal which | |
1217 | caused execution to stop is in the upper eight bits). | |
1218 | ||
1219 | If PERR is not NULL, this function waits for a reply. If an error | |
1220 | occurs, it sets *PERR to 1 and sets errno according to what the | |
1221 | target board reports. */ | |
1222 | ||
4014092b AC |
1223 | static ULONGEST |
1224 | mips_request (int cmd, | |
1225 | ULONGEST addr, | |
1226 | ULONGEST data, | |
1227 | int *perr, | |
1228 | int timeout, | |
1229 | char *buff) | |
c906108c | 1230 | { |
5af949e3 | 1231 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
c906108c | 1232 | char myBuff[DATA_MAXLEN + 1]; |
bbd2783e | 1233 | char response_string[17]; |
c906108c SS |
1234 | int len; |
1235 | int rpid; | |
1236 | char rcmd; | |
1237 | int rerrflg; | |
bbd2783e | 1238 | ULONGEST rresponse; |
c906108c SS |
1239 | |
1240 | if (buff == (char *) NULL) | |
1241 | buff = myBuff; | |
1242 | ||
1243 | if (cmd != '\0') | |
1244 | { | |
1245 | if (mips_need_reply) | |
8e65ff28 | 1246 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1247 | _("mips_request: Trying to send command before reply")); |
bbd2783e KB |
1248 | /* 'T' sets a register to a 64-bit value, so make sure we use |
1249 | the right conversion function. */ | |
1250 | if (cmd == 'T') | |
1251 | sprintf (buff, "0x0 %c 0x%s 0x%s", cmd, | |
1252 | phex_nz (addr, addr_size), phex_nz (data, 8)); | |
1253 | else | |
1254 | sprintf (buff, "0x0 %c 0x%s 0x%s", cmd, | |
1255 | phex_nz (addr, addr_size), phex_nz (data, addr_size)); | |
1256 | ||
c906108c SS |
1257 | mips_send_packet (buff, 1); |
1258 | mips_need_reply = 1; | |
1259 | } | |
1260 | ||
1261 | if (perr == (int *) NULL) | |
1262 | return 0; | |
1263 | ||
c5aa993b | 1264 | if (!mips_need_reply) |
8e65ff28 | 1265 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1266 | _("mips_request: Trying to get reply before command")); |
c906108c SS |
1267 | |
1268 | mips_need_reply = 0; | |
1269 | ||
1270 | len = mips_receive_packet (buff, 1, timeout); | |
1271 | buff[len] = '\0'; | |
1272 | ||
bbd2783e KB |
1273 | if (sscanf (buff, "0x%x %c 0x%x 0x%16s", |
1274 | &rpid, &rcmd, &rerrflg, response_string) != 4 | |
1275 | || !read_hex_value (response_string, &rresponse) | |
c906108c SS |
1276 | || (cmd != '\0' && rcmd != cmd)) |
1277 | mips_error ("Bad response from remote board"); | |
1278 | ||
1279 | if (rerrflg != 0) | |
1280 | { | |
1281 | *perr = 1; | |
1282 | ||
1283 | /* FIXME: This will returns MIPS errno numbers, which may or may | |
c5aa993b JM |
1284 | not be the same as errno values used on other systems. If |
1285 | they stick to common errno values, they will be the same, but | |
1286 | if they don't, they must be translated. */ | |
c906108c SS |
1287 | errno = rresponse; |
1288 | ||
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | *perr = 0; | |
1293 | return rresponse; | |
1294 | } | |
1295 | ||
477c84a7 KB |
1296 | /* Cleanup associated with mips_initialize(). */ |
1297 | ||
c906108c | 1298 | static void |
4efb68b1 | 1299 | mips_initialize_cleanups (void *arg) |
c906108c SS |
1300 | { |
1301 | mips_initializing = 0; | |
1302 | } | |
1303 | ||
477c84a7 KB |
1304 | /* Cleanup associated with mips_exit_debug(). */ |
1305 | ||
c906108c | 1306 | static void |
4efb68b1 | 1307 | mips_exit_cleanups (void *arg) |
c906108c SS |
1308 | { |
1309 | mips_exiting = 0; | |
1310 | } | |
1311 | ||
477c84a7 KB |
1312 | /* Send a command and wait for that command to be echoed back. Wait, |
1313 | too, for the following prompt. */ | |
1314 | ||
c906108c | 1315 | static void |
fba45db2 | 1316 | mips_send_command (const char *cmd, int prompt) |
c906108c | 1317 | { |
2cd58942 | 1318 | serial_write (mips_desc, cmd, strlen (cmd)); |
c906108c SS |
1319 | mips_expect (cmd); |
1320 | mips_expect ("\n"); | |
1321 | if (prompt) | |
1322 | mips_expect (mips_monitor_prompt); | |
1323 | } | |
1324 | ||
1325 | /* Enter remote (dbx) debug mode: */ | |
477c84a7 | 1326 | |
c906108c | 1327 | static void |
fba45db2 | 1328 | mips_enter_debug (void) |
c906108c SS |
1329 | { |
1330 | /* Reset the sequence numbers, ready for the new debug sequence: */ | |
1331 | mips_send_seq = 0; | |
1332 | mips_receive_seq = 0; | |
1333 | ||
1334 | if (mips_monitor != MON_IDT) | |
1335 | mips_send_command ("debug\r", 0); | |
c5aa993b | 1336 | else /* assume IDT monitor by default */ |
c906108c SS |
1337 | mips_send_command ("db tty0\r", 0); |
1338 | ||
c5aa993b | 1339 | sleep (1); |
2cd58942 | 1340 | serial_write (mips_desc, "\r", sizeof "\r" - 1); |
c906108c SS |
1341 | |
1342 | /* We don't need to absorb any spurious characters here, since the | |
1343 | mips_receive_header will eat up a reasonable number of characters | |
1344 | whilst looking for the SYN, however this avoids the "garbage" | |
1345 | being displayed to the user. */ | |
1346 | if (mips_monitor != MON_IDT) | |
1347 | mips_expect ("\r"); | |
c5aa993b | 1348 | |
c906108c SS |
1349 | { |
1350 | char buff[DATA_MAXLEN + 1]; | |
1351 | if (mips_receive_packet (buff, 1, 3) < 0) | |
1352 | mips_error ("Failed to initialize (didn't receive packet)."); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | /* Exit remote (dbx) debug mode, returning to the monitor prompt: */ | |
477c84a7 | 1357 | |
c906108c | 1358 | static int |
fba45db2 | 1359 | mips_exit_debug (void) |
c906108c SS |
1360 | { |
1361 | int err; | |
1362 | struct cleanup *old_cleanups = make_cleanup (mips_exit_cleanups, NULL); | |
1363 | ||
1364 | mips_exiting = 1; | |
1365 | ||
bbd2783e | 1366 | if (mips_monitor != MON_IDT && mips_monitor != MON_ROCKHOPPER) |
c906108c SS |
1367 | { |
1368 | /* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately, | |
1369 | so we do not get a reply to this command: */ | |
4014092b | 1370 | mips_request ('x', 0, 0, NULL, mips_receive_wait, NULL); |
c906108c SS |
1371 | mips_need_reply = 0; |
1372 | if (!mips_expect (" break!")) | |
c5aa993b | 1373 | return -1; |
c906108c SS |
1374 | } |
1375 | else | |
4014092b | 1376 | mips_request ('x', 0, 0, &err, mips_receive_wait, NULL); |
c906108c SS |
1377 | |
1378 | if (!mips_expect (mips_monitor_prompt)) | |
1379 | return -1; | |
1380 | ||
1381 | do_cleanups (old_cleanups); | |
1382 | ||
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | /* Initialize a new connection to the MIPS board, and make sure we are | |
1387 | really connected. */ | |
1388 | ||
1389 | static void | |
fba45db2 | 1390 | mips_initialize (void) |
c906108c SS |
1391 | { |
1392 | int err; | |
1393 | struct cleanup *old_cleanups = make_cleanup (mips_initialize_cleanups, NULL); | |
1394 | int j; | |
1395 | ||
1396 | /* What is this code doing here? I don't see any way it can happen, and | |
1397 | it might mean mips_initializing didn't get cleared properly. | |
1398 | So I'll make it a warning. */ | |
1399 | ||
1400 | if (mips_initializing) | |
1401 | { | |
1402 | warning ("internal error: mips_initialize called twice"); | |
1403 | return; | |
1404 | } | |
1405 | ||
1406 | mips_wait_flag = 0; | |
1407 | mips_initializing = 1; | |
1408 | ||
1409 | /* At this point, the packit protocol isn't responding. We'll try getting | |
1410 | into the monitor, and restarting the protocol. */ | |
1411 | ||
1412 | /* Force the system into the monitor. After this we *should* be at | |
1413 | the mips_monitor_prompt. */ | |
1414 | if (mips_monitor != MON_IDT) | |
c5aa993b | 1415 | j = 0; /* start by checking if we are already at the prompt */ |
c906108c | 1416 | else |
c5aa993b | 1417 | j = 1; /* start by sending a break */ |
c906108c SS |
1418 | for (; j <= 4; j++) |
1419 | { | |
1420 | switch (j) | |
1421 | { | |
c5aa993b | 1422 | case 0: /* First, try sending a CR */ |
2cd58942 AC |
1423 | serial_flush_input (mips_desc); |
1424 | serial_write (mips_desc, "\r", 1); | |
c5aa993b JM |
1425 | break; |
1426 | case 1: /* First, try sending a break */ | |
2cd58942 | 1427 | serial_send_break (mips_desc); |
c906108c | 1428 | break; |
c5aa993b | 1429 | case 2: /* Then, try a ^C */ |
2cd58942 | 1430 | serial_write (mips_desc, "\003", 1); |
c906108c | 1431 | break; |
c5aa993b | 1432 | case 3: /* Then, try escaping from download */ |
c906108c | 1433 | { |
c5aa993b JM |
1434 | if (mips_monitor != MON_IDT) |
1435 | { | |
1436 | char tbuff[7]; | |
1437 | ||
1438 | /* We shouldn't need to send multiple termination | |
1439 | sequences, since the target performs line (or | |
1440 | block) reads, and then processes those | |
1441 | packets. In-case we were downloading a large packet | |
1442 | we flush the output buffer before inserting a | |
1443 | termination sequence. */ | |
2cd58942 | 1444 | serial_flush_output (mips_desc); |
c5aa993b | 1445 | sprintf (tbuff, "\r/E/E\r"); |
2cd58942 | 1446 | serial_write (mips_desc, tbuff, 6); |
c5aa993b JM |
1447 | } |
1448 | else | |
1449 | { | |
1450 | char srec[10]; | |
1451 | int i; | |
1452 | ||
1453 | /* We are possibly in binary download mode, having | |
1454 | aborted in the middle of an S-record. ^C won't | |
1455 | work because of binary mode. The only reliable way | |
1456 | out is to send enough termination packets (8 bytes) | |
1457 | to fill up and then overflow the largest size | |
1458 | S-record (255 bytes in this case). This amounts to | |
1459 | 256/8 + 1 packets. | |
1460 | */ | |
1461 | ||
1462 | mips_make_srec (srec, '7', 0, NULL, 0); | |
1463 | ||
1464 | for (i = 1; i <= 33; i++) | |
1465 | { | |
2cd58942 | 1466 | serial_write (mips_desc, srec, 8); |
c5aa993b | 1467 | |
2cd58942 | 1468 | if (serial_readchar (mips_desc, 0) >= 0) |
c5aa993b | 1469 | break; /* Break immediatly if we get something from |
c906108c | 1470 | the board. */ |
c5aa993b JM |
1471 | } |
1472 | } | |
1473 | } | |
c906108c SS |
1474 | break; |
1475 | case 4: | |
1476 | mips_error ("Failed to initialize."); | |
1477 | } | |
1478 | ||
1479 | if (mips_expect (mips_monitor_prompt)) | |
1480 | break; | |
1481 | } | |
1482 | ||
1483 | if (mips_monitor != MON_IDT) | |
1484 | { | |
1485 | /* Sometimes PMON ignores the first few characters in the first | |
1486 | command sent after a load. Sending a blank command gets | |
c5aa993b | 1487 | around that. */ |
c906108c SS |
1488 | mips_send_command ("\r", -1); |
1489 | ||
1490 | /* Ensure the correct target state: */ | |
1491 | if (mips_monitor != MON_LSI) | |
1492 | mips_send_command ("set regsize 64\r", -1); | |
1493 | mips_send_command ("set hostport tty0\r", -1); | |
1494 | mips_send_command ("set brkcmd \"\"\r", -1); | |
1495 | /* Delete all the current breakpoints: */ | |
1496 | mips_send_command ("db *\r", -1); | |
1497 | /* NOTE: PMON does not have breakpoint support through the | |
1498 | "debug" mode, only at the monitor command-line. */ | |
1499 | } | |
1500 | ||
1501 | mips_enter_debug (); | |
1502 | ||
1503 | /* Clear all breakpoints: */ | |
1504 | if ((mips_monitor == MON_IDT | |
06b1d59c | 1505 | && mips_clear_breakpoint (-1, 0, BREAK_UNUSED) == 0) |
c906108c SS |
1506 | || mips_monitor == MON_LSI) |
1507 | monitor_supports_breakpoints = 1; | |
1508 | else | |
1509 | monitor_supports_breakpoints = 0; | |
1510 | ||
1511 | do_cleanups (old_cleanups); | |
1512 | ||
1513 | /* If this doesn't call error, we have connected; we don't care if | |
1514 | the request itself succeeds or fails. */ | |
1515 | ||
4014092b | 1516 | mips_request ('r', 0, 0, &err, mips_receive_wait, NULL); |
c906108c SS |
1517 | } |
1518 | ||
1519 | /* Open a connection to the remote board. */ | |
477c84a7 | 1520 | |
c906108c | 1521 | static void |
fba45db2 | 1522 | common_open (struct target_ops *ops, char *name, int from_tty, |
98691afe AC |
1523 | enum mips_monitor_type new_monitor, |
1524 | const char *new_monitor_prompt) | |
c906108c SS |
1525 | { |
1526 | char *ptype; | |
1527 | char *serial_port_name; | |
1528 | char *remote_name = 0; | |
1529 | char *local_name = 0; | |
1530 | char **argv; | |
1531 | ||
1532 | if (name == 0) | |
1533 | error ( | |
c5aa993b | 1534 | "To open a MIPS remote debugging connection, you need to specify what serial\n\ |
c906108c | 1535 | device is attached to the target board (e.g., /dev/ttya).\n" |
c5aa993b JM |
1536 | "If you want to use TFTP to download to the board, specify the name of a\n" |
1537 | "temporary file to be used by GDB for downloads as the second argument.\n" | |
1538 | "This filename must be in the form host:filename, where host is the name\n" | |
1539 | "of the host running the TFTP server, and the file must be readable by the\n" | |
1540 | "world. If the local name of the temporary file differs from the name as\n" | |
1541 | "seen from the board via TFTP, specify that name as the third parameter.\n"); | |
c906108c SS |
1542 | |
1543 | /* Parse the serial port name, the optional TFTP name, and the | |
1544 | optional local TFTP name. */ | |
d1a41061 | 1545 | argv = gdb_buildargv (name); |
7a292a7a | 1546 | make_cleanup_freeargv (argv); |
c906108c | 1547 | |
4fcf66da | 1548 | serial_port_name = xstrdup (argv[0]); |
c5aa993b | 1549 | if (argv[1]) /* remote TFTP name specified? */ |
c906108c SS |
1550 | { |
1551 | remote_name = argv[1]; | |
c5aa993b | 1552 | if (argv[2]) /* local TFTP filename specified? */ |
c906108c SS |
1553 | local_name = argv[2]; |
1554 | } | |
1555 | ||
1556 | target_preopen (from_tty); | |
1557 | ||
1558 | if (mips_is_open) | |
1559 | unpush_target (current_ops); | |
1560 | ||
1561 | /* Open and initialize the serial port. */ | |
2cd58942 | 1562 | mips_desc = serial_open (serial_port_name); |
819cc324 | 1563 | if (mips_desc == NULL) |
c906108c SS |
1564 | perror_with_name (serial_port_name); |
1565 | ||
1566 | if (baud_rate != -1) | |
1567 | { | |
2cd58942 | 1568 | if (serial_setbaudrate (mips_desc, baud_rate)) |
c5aa993b | 1569 | { |
2cd58942 | 1570 | serial_close (mips_desc); |
c5aa993b JM |
1571 | perror_with_name (serial_port_name); |
1572 | } | |
c906108c SS |
1573 | } |
1574 | ||
2cd58942 | 1575 | serial_raw (mips_desc); |
c906108c SS |
1576 | |
1577 | /* Open and initialize the optional download port. If it is in the form | |
1578 | hostname#portnumber, it's a UDP socket. If it is in the form | |
1579 | hostname:filename, assume it's the TFTP filename that must be | |
1580 | passed to the DDB board to tell it where to get the load file. */ | |
1581 | if (remote_name) | |
1582 | { | |
1583 | if (strchr (remote_name, '#')) | |
1584 | { | |
2cd58942 | 1585 | udp_desc = serial_open (remote_name); |
c906108c SS |
1586 | if (!udp_desc) |
1587 | perror_with_name ("Unable to open UDP port"); | |
1588 | udp_in_use = 1; | |
1589 | } | |
1590 | else | |
1591 | { | |
1592 | /* Save the remote and local names of the TFTP temp file. If | |
1593 | the user didn't specify a local name, assume it's the same | |
1594 | as the part of the remote name after the "host:". */ | |
1595 | if (tftp_name) | |
b8c9b27d | 1596 | xfree (tftp_name); |
c906108c | 1597 | if (tftp_localname) |
b8c9b27d | 1598 | xfree (tftp_localname); |
c906108c | 1599 | if (local_name == NULL) |
c5aa993b JM |
1600 | if ((local_name = strchr (remote_name, ':')) != NULL) |
1601 | local_name++; /* skip over the colon */ | |
c906108c SS |
1602 | if (local_name == NULL) |
1603 | local_name = remote_name; /* local name same as remote name */ | |
4fcf66da AC |
1604 | tftp_name = xstrdup (remote_name); |
1605 | tftp_localname = xstrdup (local_name); | |
c906108c SS |
1606 | tftp_in_use = 1; |
1607 | } | |
1608 | } | |
1609 | ||
1610 | current_ops = ops; | |
1611 | mips_is_open = 1; | |
1612 | ||
1613 | /* Reset the expected monitor prompt if it's never been set before. */ | |
1614 | if (mips_monitor_prompt == NULL) | |
4fcf66da | 1615 | mips_monitor_prompt = xstrdup (new_monitor_prompt); |
c906108c SS |
1616 | mips_monitor = new_monitor; |
1617 | ||
1618 | mips_initialize (); | |
1619 | ||
1620 | if (from_tty) | |
1621 | printf_unfiltered ("Remote MIPS debugging using %s\n", serial_port_name); | |
1622 | ||
1623 | /* Switch to using remote target now. */ | |
1624 | push_target (ops); | |
1625 | ||
8eeafb51 KB |
1626 | inferior_ptid = remote_mips_ptid; |
1627 | inferior_appeared (current_inferior (), ptid_get_pid (inferior_ptid)); | |
1628 | add_thread_silent (inferior_ptid); | |
c906108c SS |
1629 | |
1630 | /* Try to figure out the processor model if possible. */ | |
691c0433 | 1631 | deprecated_mips_set_processor_regs_hack (); |
c906108c | 1632 | |
a193e397 AC |
1633 | /* This is really the job of start_remote however, that makes an |
1634 | assumption that the target is about to print out a status message | |
1635 | of some sort. That doesn't happen here (in fact, it may not be | |
1636 | possible to get the monitor to send the appropriate packet). */ | |
c906108c | 1637 | |
35f196d9 | 1638 | reinit_frame_cache (); |
c906108c | 1639 | registers_changed (); |
fb14de7b | 1640 | stop_pc = regcache_read_pc (get_current_regcache ()); |
b04f3ab4 | 1641 | print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC); |
b8c9b27d | 1642 | xfree (serial_port_name); |
c906108c SS |
1643 | } |
1644 | ||
477c84a7 KB |
1645 | /* Open a connection to an IDT board. */ |
1646 | ||
c906108c | 1647 | static void |
fba45db2 | 1648 | mips_open (char *name, int from_tty) |
c906108c | 1649 | { |
ef31c1ea | 1650 | const char *monitor_prompt = NULL; |
1cf3db46 UW |
1651 | if (gdbarch_bfd_arch_info (target_gdbarch) != NULL |
1652 | && gdbarch_bfd_arch_info (target_gdbarch)->arch == bfd_arch_mips) | |
ef31c1ea | 1653 | { |
1cf3db46 | 1654 | switch (gdbarch_bfd_arch_info (target_gdbarch)->mach) |
ef31c1ea AC |
1655 | { |
1656 | case bfd_mach_mips4100: | |
1657 | case bfd_mach_mips4300: | |
1658 | case bfd_mach_mips4600: | |
1659 | case bfd_mach_mips4650: | |
1660 | case bfd_mach_mips5000: | |
1661 | monitor_prompt = "<RISQ> "; | |
1662 | break; | |
1663 | } | |
1664 | } | |
1665 | if (monitor_prompt == NULL) | |
1666 | monitor_prompt = "<IDT>"; | |
1667 | common_open (&mips_ops, name, from_tty, MON_IDT, monitor_prompt); | |
c906108c SS |
1668 | } |
1669 | ||
477c84a7 KB |
1670 | /* Open a connection to a PMON board. */ |
1671 | ||
c906108c | 1672 | static void |
fba45db2 | 1673 | pmon_open (char *name, int from_tty) |
c906108c SS |
1674 | { |
1675 | common_open (&pmon_ops, name, from_tty, MON_PMON, "PMON> "); | |
1676 | } | |
1677 | ||
477c84a7 KB |
1678 | /* Open a connection to a DDB board. */ |
1679 | ||
c906108c | 1680 | static void |
fba45db2 | 1681 | ddb_open (char *name, int from_tty) |
c906108c SS |
1682 | { |
1683 | common_open (&ddb_ops, name, from_tty, MON_DDB, "NEC010>"); | |
1684 | } | |
1685 | ||
bbd2783e KB |
1686 | /* Open a connection to a rockhopper board. */ |
1687 | ||
1688 | static void | |
1689 | rockhopper_open (char *name, int from_tty) | |
1690 | { | |
1691 | common_open (&rockhopper_ops, name, from_tty, MON_ROCKHOPPER, "NEC01>"); | |
1692 | } | |
1693 | ||
477c84a7 KB |
1694 | /* Open a connection to an LSI board. */ |
1695 | ||
c906108c | 1696 | static void |
fba45db2 | 1697 | lsi_open (char *name, int from_tty) |
c906108c SS |
1698 | { |
1699 | int i; | |
1700 | ||
1701 | /* Clear the LSI breakpoint table. */ | |
1702 | for (i = 0; i < MAX_LSI_BREAKPOINTS; i++) | |
1703 | lsi_breakpoints[i].type = BREAK_UNUSED; | |
c5aa993b | 1704 | |
c906108c SS |
1705 | common_open (&lsi_ops, name, from_tty, MON_LSI, "PMON> "); |
1706 | } | |
1707 | ||
1708 | /* Close a connection to the remote board. */ | |
1709 | ||
1710 | static void | |
fba45db2 | 1711 | mips_close (int quitting) |
c906108c SS |
1712 | { |
1713 | if (mips_is_open) | |
1714 | { | |
1715 | /* Get the board out of remote debugging mode. */ | |
1716 | (void) mips_exit_debug (); | |
1717 | ||
1718 | close_ports (); | |
1719 | } | |
8eeafb51 KB |
1720 | |
1721 | generic_mourn_inferior (); | |
c906108c SS |
1722 | } |
1723 | ||
1724 | /* Detach from the remote board. */ | |
1725 | ||
1726 | static void | |
136d6dae | 1727 | mips_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
1728 | { |
1729 | if (args) | |
1730 | error ("Argument given to \"detach\" when remotely debugging."); | |
1731 | ||
1732 | pop_target (); | |
1733 | ||
1734 | mips_close (1); | |
1735 | ||
1736 | if (from_tty) | |
1737 | printf_unfiltered ("Ending remote MIPS debugging.\n"); | |
1738 | } | |
1739 | ||
1740 | /* Tell the target board to resume. This does not wait for a reply | |
1741 | from the board, except in the case of single-stepping on LSI boards, | |
1742 | where PMON does return a reply. */ | |
1743 | ||
1744 | static void | |
28439f5e PA |
1745 | mips_resume (struct target_ops *ops, |
1746 | ptid_t ptid, int step, enum target_signal siggnal) | |
c906108c SS |
1747 | { |
1748 | int err; | |
1749 | ||
1750 | /* LSI PMON requires returns a reply packet "0x1 s 0x0 0x57f" after | |
1751 | a single step, so we wait for that. */ | |
4014092b | 1752 | mips_request (step ? 's' : 'c', 1, siggnal, |
c906108c SS |
1753 | mips_monitor == MON_LSI && step ? &err : (int *) NULL, |
1754 | mips_receive_wait, NULL); | |
1755 | } | |
1756 | ||
1757 | /* Return the signal corresponding to SIG, where SIG is the number which | |
1758 | the MIPS protocol uses for the signal. */ | |
477c84a7 | 1759 | |
a78f21af | 1760 | static enum target_signal |
fba45db2 | 1761 | mips_signal_from_protocol (int sig) |
c906108c SS |
1762 | { |
1763 | /* We allow a few more signals than the IDT board actually returns, on | |
1764 | the theory that there is at least *some* hope that perhaps the numbering | |
1765 | for these signals is widely agreed upon. */ | |
1766 | if (sig <= 0 | |
1767 | || sig > 31) | |
1768 | return TARGET_SIGNAL_UNKNOWN; | |
1769 | ||
1770 | /* Don't want to use target_signal_from_host because we are converting | |
1771 | from MIPS signal numbers, not host ones. Our internal numbers | |
1772 | match the MIPS numbers for the signals the board can return, which | |
1773 | are: SIGINT, SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP. */ | |
1774 | return (enum target_signal) sig; | |
1775 | } | |
1776 | ||
bbd2783e KB |
1777 | /* Set the register designated by REGNO to the value designated by VALUE. */ |
1778 | ||
1779 | static void | |
1780 | mips_set_register (int regno, ULONGEST value) | |
1781 | { | |
1782 | char buf[MAX_REGISTER_SIZE]; | |
1783 | struct regcache *regcache = get_current_regcache (); | |
1784 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1785 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1786 | ||
1787 | /* We got the number the register holds, but gdb expects to see a | |
1788 | value in the target byte ordering. */ | |
1789 | ||
1790 | if (mips_monitor != MON_ROCKHOPPER | |
1791 | && (regno == mips_regnum (gdbarch)->pc || regno < 32)) | |
1792 | /* Some 64-bit boards have monitors that only send the bottom 32 bits. | |
1793 | In such cases we can only really debug 32-bit code properly so, | |
1794 | when reading a GPR or the PC, assume that the full 64-bit | |
1795 | value is the sign extension of the lower 32 bits. */ | |
1796 | store_signed_integer (buf, register_size (gdbarch, regno), byte_order, | |
1797 | value); | |
1798 | else | |
1799 | store_unsigned_integer (buf, register_size (gdbarch, regno), byte_order, | |
1800 | value); | |
1801 | ||
1802 | regcache_raw_supply (regcache, regno, buf); | |
1803 | } | |
1804 | ||
c906108c SS |
1805 | /* Wait until the remote stops, and return a wait status. */ |
1806 | ||
39f77062 | 1807 | static ptid_t |
117de6a9 | 1808 | mips_wait (struct target_ops *ops, |
47608cb1 | 1809 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c SS |
1810 | { |
1811 | int rstatus; | |
1812 | int err; | |
1813 | char buff[DATA_MAXLEN]; | |
bbd2783e KB |
1814 | ULONGEST rpc, rfp, rsp; |
1815 | char pc_string[17], fp_string[17], sp_string[17], flags[20]; | |
c906108c SS |
1816 | int nfields; |
1817 | int i; | |
1818 | ||
1819 | interrupt_count = 0; | |
1820 | hit_watchpoint = 0; | |
1821 | ||
1822 | /* If we have not sent a single step or continue command, then the | |
1823 | board is waiting for us to do something. Return a status | |
1824 | indicating that it is stopped. */ | |
c5aa993b | 1825 | if (!mips_need_reply) |
c906108c SS |
1826 | { |
1827 | status->kind = TARGET_WAITKIND_STOPPED; | |
1828 | status->value.sig = TARGET_SIGNAL_TRAP; | |
39f77062 | 1829 | return inferior_ptid; |
c906108c SS |
1830 | } |
1831 | ||
1832 | /* No timeout; we sit here as long as the program continues to execute. */ | |
1833 | mips_wait_flag = 1; | |
4014092b | 1834 | rstatus = mips_request ('\000', 0, 0, &err, -1, buff); |
c906108c SS |
1835 | mips_wait_flag = 0; |
1836 | if (err) | |
1837 | mips_error ("Remote failure: %s", safe_strerror (errno)); | |
1838 | ||
1839 | /* On returning from a continue, the PMON monitor seems to start | |
1840 | echoing back the messages we send prior to sending back the | |
1841 | ACK. The code can cope with this, but to try and avoid the | |
1842 | unnecessary serial traffic, and "spurious" characters displayed | |
1843 | to the user, we cheat and reset the debug protocol. The problems | |
1844 | seems to be caused by a check on the number of arguments, and the | |
1845 | command length, within the monitor causing it to echo the command | |
1846 | as a bad packet. */ | |
1847 | if (mips_monitor == MON_PMON) | |
1848 | { | |
1849 | mips_exit_debug (); | |
1850 | mips_enter_debug (); | |
1851 | } | |
1852 | ||
1853 | /* See if we got back extended status. If so, pick out the pc, fp, sp, etc... */ | |
1854 | ||
bbd2783e KB |
1855 | nfields = sscanf (buff, "0x%*x %*c 0x%*x 0x%*x 0x%16s 0x%16s 0x%16s 0x%*x %s", |
1856 | pc_string, fp_string, sp_string, flags); | |
1857 | if (nfields >= 3 | |
1858 | && read_hex_value (pc_string, &rpc) | |
1859 | && read_hex_value (fp_string, &rfp) | |
1860 | && read_hex_value (sp_string, &rsp)) | |
c906108c | 1861 | { |
594f7785 | 1862 | struct regcache *regcache = get_current_regcache (); |
2eb4d78b | 1863 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
bbd2783e KB |
1864 | |
1865 | mips_set_register (gdbarch_pc_regnum (gdbarch), rpc); | |
1866 | mips_set_register (30, rfp); | |
1867 | mips_set_register (gdbarch_sp_regnum (gdbarch), rsp); | |
c906108c SS |
1868 | |
1869 | if (nfields == 9) | |
1870 | { | |
1871 | int i; | |
1872 | ||
1873 | for (i = 0; i <= 2; i++) | |
1874 | if (flags[i] == 'r' || flags[i] == 'w') | |
1875 | hit_watchpoint = 1; | |
1876 | else if (flags[i] == '\000') | |
1877 | break; | |
1878 | } | |
1879 | } | |
1880 | ||
1881 | if (strcmp (target_shortname, "lsi") == 0) | |
1882 | { | |
1883 | #if 0 | |
1884 | /* If this is an LSI PMON target, see if we just hit a hardrdware watchpoint. | |
c5aa993b JM |
1885 | Right now, PMON doesn't give us enough information to determine which |
1886 | breakpoint we hit. So we have to look up the PC in our own table | |
1887 | of breakpoints, and if found, assume it's just a normal instruction | |
1888 | fetch breakpoint, not a data watchpoint. FIXME when PMON | |
1889 | provides some way to tell us what type of breakpoint it is. */ | |
c906108c | 1890 | int i; |
fb14de7b | 1891 | CORE_ADDR pc = regcache_read_pc (get_current_regcache ()); |
c906108c SS |
1892 | |
1893 | hit_watchpoint = 1; | |
1894 | for (i = 0; i < MAX_LSI_BREAKPOINTS; i++) | |
1895 | { | |
1896 | if (lsi_breakpoints[i].addr == pc | |
1897 | && lsi_breakpoints[i].type == BREAK_FETCH) | |
1898 | { | |
1899 | hit_watchpoint = 0; | |
1900 | break; | |
1901 | } | |
1902 | } | |
1903 | #else | |
1904 | /* If a data breakpoint was hit, PMON returns the following packet: | |
c5aa993b JM |
1905 | 0x1 c 0x0 0x57f 0x1 |
1906 | The return packet from an ordinary breakpoint doesn't have the | |
1907 | extra 0x01 field tacked onto the end. */ | |
c906108c SS |
1908 | if (nfields == 1 && rpc == 1) |
1909 | hit_watchpoint = 1; | |
1910 | #endif | |
1911 | } | |
1912 | ||
1913 | /* NOTE: The following (sig) numbers are defined by PMON: | |
c5aa993b JM |
1914 | SPP_SIGTRAP 5 breakpoint |
1915 | SPP_SIGINT 2 | |
1916 | SPP_SIGSEGV 11 | |
1917 | SPP_SIGBUS 10 | |
1918 | SPP_SIGILL 4 | |
1919 | SPP_SIGFPE 8 | |
1920 | SPP_SIGTERM 15 */ | |
c906108c SS |
1921 | |
1922 | /* Translate a MIPS waitstatus. We use constants here rather than WTERMSIG | |
1923 | and so on, because the constants we want here are determined by the | |
1924 | MIPS protocol and have nothing to do with what host we are running on. */ | |
1925 | if ((rstatus & 0xff) == 0) | |
1926 | { | |
1927 | status->kind = TARGET_WAITKIND_EXITED; | |
1928 | status->value.integer = (((rstatus) >> 8) & 0xff); | |
1929 | } | |
1930 | else if ((rstatus & 0xff) == 0x7f) | |
1931 | { | |
1932 | status->kind = TARGET_WAITKIND_STOPPED; | |
1933 | status->value.sig = mips_signal_from_protocol (((rstatus) >> 8) & 0xff); | |
1934 | ||
1935 | /* If the stop PC is in the _exit function, assume | |
1936 | we hit the 'break 0x3ff' instruction in _exit, so this | |
c5aa993b | 1937 | is not a normal breakpoint. */ |
c906108c SS |
1938 | if (strcmp (target_shortname, "lsi") == 0) |
1939 | { | |
1940 | char *func_name; | |
1941 | CORE_ADDR func_start; | |
fb14de7b | 1942 | CORE_ADDR pc = regcache_read_pc (get_current_regcache ()); |
c906108c SS |
1943 | |
1944 | find_pc_partial_function (pc, &func_name, &func_start, NULL); | |
1945 | if (func_name != NULL && strcmp (func_name, "_exit") == 0 | |
1946 | && func_start == pc) | |
1947 | status->kind = TARGET_WAITKIND_EXITED; | |
1948 | } | |
1949 | } | |
1950 | else | |
1951 | { | |
1952 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
1953 | status->value.sig = mips_signal_from_protocol (rstatus & 0x7f); | |
1954 | } | |
1955 | ||
39f77062 | 1956 | return inferior_ptid; |
c906108c SS |
1957 | } |
1958 | ||
1959 | /* We have to map between the register numbers used by gdb and the | |
82e34d2f | 1960 | register numbers used by the debugging protocol. */ |
c906108c SS |
1961 | |
1962 | #define REGNO_OFFSET 96 | |
1963 | ||
1964 | static int | |
74ed0bb4 | 1965 | mips_map_regno (struct gdbarch *gdbarch, int regno) |
c906108c SS |
1966 | { |
1967 | if (regno < 32) | |
1968 | return regno; | |
74ed0bb4 MD |
1969 | if (regno >= mips_regnum (gdbarch)->fp0 |
1970 | && regno < mips_regnum (gdbarch)->fp0 + 32) | |
1971 | return regno - mips_regnum (gdbarch)->fp0 + 32; | |
1972 | else if (regno == mips_regnum (gdbarch)->pc) | |
56cea623 | 1973 | return REGNO_OFFSET + 0; |
74ed0bb4 | 1974 | else if (regno == mips_regnum (gdbarch)->cause) |
56cea623 | 1975 | return REGNO_OFFSET + 1; |
74ed0bb4 | 1976 | else if (regno == mips_regnum (gdbarch)->hi) |
56cea623 | 1977 | return REGNO_OFFSET + 2; |
74ed0bb4 | 1978 | else if (regno == mips_regnum (gdbarch)->lo) |
56cea623 | 1979 | return REGNO_OFFSET + 3; |
74ed0bb4 | 1980 | else if (regno == mips_regnum (gdbarch)->fp_control_status) |
56cea623 | 1981 | return REGNO_OFFSET + 4; |
74ed0bb4 | 1982 | else if (regno == mips_regnum (gdbarch)->fp_implementation_revision) |
56cea623 AC |
1983 | return REGNO_OFFSET + 5; |
1984 | else | |
1985 | /* FIXME: Is there a way to get the status register? */ | |
1986 | return 0; | |
c906108c SS |
1987 | } |
1988 | ||
1989 | /* Fetch the remote registers. */ | |
1990 | ||
1991 | static void | |
28439f5e PA |
1992 | mips_fetch_registers (struct target_ops *ops, |
1993 | struct regcache *regcache, int regno) | |
c906108c | 1994 | { |
2eb4d78b | 1995 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
e17a4113 | 1996 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
bbd2783e | 1997 | ULONGEST val; |
c906108c SS |
1998 | int err; |
1999 | ||
2000 | if (regno == -1) | |
2001 | { | |
2eb4d78b | 2002 | for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++) |
28439f5e | 2003 | mips_fetch_registers (ops, regcache, regno); |
c906108c SS |
2004 | return; |
2005 | } | |
2006 | ||
2eb4d78b | 2007 | if (regno == gdbarch_deprecated_fp_regnum (gdbarch) |
064f5156 UW |
2008 | || regno == MIPS_ZERO_REGNUM) |
2009 | /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just | |
0ba6dca9 | 2010 | supposed to read zero (see also mips-nat.c). */ |
c906108c SS |
2011 | val = 0; |
2012 | else | |
2013 | { | |
2014 | /* If PMON doesn't support this register, don't waste serial | |
2015 | bandwidth trying to read it. */ | |
74ed0bb4 | 2016 | int pmon_reg = mips_map_regno (gdbarch, regno); |
c906108c SS |
2017 | if (regno != 0 && pmon_reg == 0) |
2018 | val = 0; | |
2019 | else | |
2020 | { | |
2021 | /* Unfortunately the PMON version in the Vr4300 board has been | |
2022 | compiled without the 64bit register access commands. This | |
2023 | means we cannot get hold of the full register width. */ | |
bbd2783e KB |
2024 | if (mips_monitor == MON_DDB || mips_monitor == MON_ROCKHOPPER) |
2025 | val = mips_request ('t', pmon_reg, 0, | |
2026 | &err, mips_receive_wait, NULL); | |
c906108c | 2027 | else |
4014092b AC |
2028 | val = mips_request ('r', pmon_reg, 0, |
2029 | &err, mips_receive_wait, NULL); | |
c906108c SS |
2030 | if (err) |
2031 | mips_error ("Can't read register %d: %s", regno, | |
2032 | safe_strerror (errno)); | |
2033 | } | |
2034 | } | |
2035 | ||
bbd2783e | 2036 | mips_set_register (regno, val); |
c906108c SS |
2037 | } |
2038 | ||
2039 | /* Prepare to store registers. The MIPS protocol can store individual | |
2040 | registers, so this function doesn't have to do anything. */ | |
2041 | ||
2042 | static void | |
316f2060 | 2043 | mips_prepare_to_store (struct regcache *regcache) |
c906108c SS |
2044 | { |
2045 | } | |
2046 | ||
2047 | /* Store remote register(s). */ | |
2048 | ||
2049 | static void | |
28439f5e PA |
2050 | mips_store_registers (struct target_ops *ops, |
2051 | struct regcache *regcache, int regno) | |
c906108c | 2052 | { |
2eb4d78b | 2053 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
56be3814 | 2054 | ULONGEST val; |
c906108c SS |
2055 | int err; |
2056 | ||
2057 | if (regno == -1) | |
2058 | { | |
2eb4d78b | 2059 | for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++) |
28439f5e | 2060 | mips_store_registers (ops, regcache, regno); |
c906108c SS |
2061 | return; |
2062 | } | |
2063 | ||
56be3814 | 2064 | regcache_cooked_read_unsigned (regcache, regno, &val); |
bbd2783e KB |
2065 | mips_request (mips_monitor == MON_ROCKHOPPER ? 'T' : 'R', |
2066 | mips_map_regno (gdbarch, regno), | |
2067 | val, | |
c906108c SS |
2068 | &err, mips_receive_wait, NULL); |
2069 | if (err) | |
2070 | mips_error ("Can't write register %d: %s", regno, safe_strerror (errno)); | |
2071 | } | |
2072 | ||
8cfa2c71 KB |
2073 | /* Fetch a word from the target board. Return word fetched in location |
2074 | addressed by VALP. Return 0 when successful; return positive error | |
2075 | code when not. */ | |
c906108c | 2076 | |
8cfa2c71 KB |
2077 | static int |
2078 | mips_fetch_word (CORE_ADDR addr, unsigned int *valp) | |
c906108c | 2079 | { |
c906108c SS |
2080 | int err; |
2081 | ||
8cfa2c71 | 2082 | *valp = mips_request ('d', addr, 0, &err, mips_receive_wait, NULL); |
c906108c SS |
2083 | if (err) |
2084 | { | |
2085 | /* Data space failed; try instruction space. */ | |
8cfa2c71 KB |
2086 | *valp = mips_request ('i', addr, 0, &err, |
2087 | mips_receive_wait, NULL); | |
c906108c | 2088 | } |
8cfa2c71 | 2089 | return err; |
c906108c SS |
2090 | } |
2091 | ||
2092 | /* Store a word to the target board. Returns errno code or zero for | |
2093 | success. If OLD_CONTENTS is non-NULL, put the old contents of that | |
2094 | memory location there. */ | |
2095 | ||
2096 | /* FIXME! make sure only 32-bit quantities get stored! */ | |
2097 | static int | |
e17a4113 | 2098 | mips_store_word (CORE_ADDR addr, unsigned int val, int *old_contents) |
c906108c SS |
2099 | { |
2100 | int err; | |
2101 | unsigned int oldcontents; | |
2102 | ||
4014092b | 2103 | oldcontents = mips_request ('D', addr, val, &err, |
c906108c SS |
2104 | mips_receive_wait, NULL); |
2105 | if (err) | |
2106 | { | |
2107 | /* Data space failed; try instruction space. */ | |
4014092b | 2108 | oldcontents = mips_request ('I', addr, val, &err, |
c906108c SS |
2109 | mips_receive_wait, NULL); |
2110 | if (err) | |
2111 | return errno; | |
2112 | } | |
2113 | if (old_contents != NULL) | |
e17a4113 | 2114 | *old_contents = oldcontents; |
c906108c SS |
2115 | return 0; |
2116 | } | |
2117 | ||
2118 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
2119 | transferring to or from debugger address MYADDR. Write to inferior | |
2120 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
2121 | read; 0 for error. Note that protocol gives us the correct value | |
2122 | for a longword, since it transfers values in ASCII. We want the | |
2123 | byte values, so we have to swap the longword values. */ | |
2124 | ||
4014092b AC |
2125 | static int mask_address_p = 1; |
2126 | ||
c906108c | 2127 | static int |
7d12900b | 2128 | mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
0a65a603 | 2129 | struct mem_attrib *attrib, struct target_ops *target) |
c906108c | 2130 | { |
e17a4113 | 2131 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
4014092b AC |
2132 | int i; |
2133 | CORE_ADDR addr; | |
2134 | int count; | |
2135 | char *buffer; | |
2136 | int status; | |
2137 | ||
2138 | /* PMON targets do not cope well with 64 bit addresses. Mask the | |
2139 | value down to 32 bits. */ | |
2140 | if (mask_address_p) | |
2141 | memaddr &= (CORE_ADDR) 0xffffffff; | |
2142 | ||
c906108c | 2143 | /* Round starting address down to longword boundary. */ |
4014092b | 2144 | addr = memaddr & ~3; |
c906108c | 2145 | /* Round ending address up; get number of longwords that makes. */ |
4014092b | 2146 | count = (((memaddr + len) - addr) + 3) / 4; |
c906108c | 2147 | /* Allocate buffer of that many longwords. */ |
4014092b | 2148 | buffer = alloca (count * 4); |
c906108c SS |
2149 | |
2150 | if (write) | |
2151 | { | |
2152 | /* Fill start and end extra bytes of buffer with existing data. */ | |
2153 | if (addr != memaddr || len < 4) | |
2154 | { | |
8cfa2c71 KB |
2155 | unsigned int val; |
2156 | ||
2157 | if (mips_fetch_word (addr, &val)) | |
2158 | return 0; | |
2159 | ||
c906108c | 2160 | /* Need part of initial word -- fetch it. */ |
8cfa2c71 | 2161 | store_unsigned_integer (&buffer[0], 4, byte_order, val); |
c906108c SS |
2162 | } |
2163 | ||
2164 | if (count > 1) | |
2165 | { | |
8cfa2c71 KB |
2166 | unsigned int val; |
2167 | ||
c906108c SS |
2168 | /* Need part of last word -- fetch it. FIXME: we do this even |
2169 | if we don't need it. */ | |
8cfa2c71 KB |
2170 | if (mips_fetch_word (addr + (count - 1) * 4, &val)) |
2171 | return 0; | |
2172 | ||
2173 | store_unsigned_integer (&buffer[(count - 1) * 4], 4, byte_order, val); | |
c906108c SS |
2174 | } |
2175 | ||
2176 | /* Copy data to be written over corresponding part of buffer */ | |
2177 | ||
2178 | memcpy ((char *) buffer + (memaddr & 3), myaddr, len); | |
2179 | ||
2180 | /* Write the entire buffer. */ | |
2181 | ||
2182 | for (i = 0; i < count; i++, addr += 4) | |
2183 | { | |
e17a4113 UW |
2184 | int word; |
2185 | word = extract_unsigned_integer (&buffer[i * 4], 4, byte_order); | |
2186 | status = mips_store_word (addr, word, NULL); | |
c906108c | 2187 | /* Report each kilobyte (we download 32-bit words at a time) */ |
c5aa993b | 2188 | if (i % 256 == 255) |
c906108c SS |
2189 | { |
2190 | printf_unfiltered ("*"); | |
2191 | gdb_flush (gdb_stdout); | |
2192 | } | |
2193 | if (status) | |
2194 | { | |
2195 | errno = status; | |
2196 | return 0; | |
2197 | } | |
2198 | /* FIXME: Do we want a QUIT here? */ | |
2199 | } | |
2200 | if (count >= 256) | |
2201 | printf_unfiltered ("\n"); | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | /* Read all the longwords */ | |
2206 | for (i = 0; i < count; i++, addr += 4) | |
2207 | { | |
8cfa2c71 KB |
2208 | unsigned int val; |
2209 | ||
2210 | if (mips_fetch_word (addr, &val)) | |
2211 | return 0; | |
2212 | ||
2213 | store_unsigned_integer (&buffer[i * 4], 4, byte_order, val); | |
c906108c SS |
2214 | QUIT; |
2215 | } | |
2216 | ||
2217 | /* Copy appropriate bytes out of the buffer. */ | |
2218 | memcpy (myaddr, buffer + (memaddr & 3), len); | |
2219 | } | |
2220 | return len; | |
2221 | } | |
2222 | ||
2223 | /* Print info on this target. */ | |
2224 | ||
2225 | static void | |
fba45db2 | 2226 | mips_files_info (struct target_ops *ignore) |
c906108c SS |
2227 | { |
2228 | printf_unfiltered ("Debugging a MIPS board over a serial line.\n"); | |
2229 | } | |
2230 | ||
2231 | /* Kill the process running on the board. This will actually only | |
2232 | work if we are doing remote debugging over the console input. I | |
2233 | think that if IDT/sim had the remote debug interrupt enabled on the | |
2234 | right port, we could interrupt the process with a break signal. */ | |
2235 | ||
2236 | static void | |
7d85a9c0 | 2237 | mips_kill (struct target_ops *ops) |
c906108c SS |
2238 | { |
2239 | if (!mips_wait_flag) | |
8eeafb51 KB |
2240 | { |
2241 | target_mourn_inferior (); | |
2242 | return; | |
2243 | } | |
c906108c SS |
2244 | |
2245 | interrupt_count++; | |
2246 | ||
2247 | if (interrupt_count >= 2) | |
2248 | { | |
2249 | interrupt_count = 0; | |
2250 | ||
2251 | target_terminal_ours (); | |
2252 | ||
9e2f0ad4 HZ |
2253 | if (query (_("Interrupted while waiting for the program.\n\ |
2254 | Give up (and stop debugging it)? "))) | |
c906108c SS |
2255 | { |
2256 | /* Clean up in such a way that mips_close won't try to talk to the | |
2257 | board (it almost surely won't work since we weren't able to talk to | |
2258 | it). */ | |
2259 | mips_wait_flag = 0; | |
c5aa993b | 2260 | close_ports (); |
c906108c SS |
2261 | |
2262 | printf_unfiltered ("Ending remote MIPS debugging.\n"); | |
2263 | target_mourn_inferior (); | |
2264 | ||
315a522e | 2265 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2266 | } |
2267 | ||
2268 | target_terminal_inferior (); | |
2269 | } | |
2270 | ||
2271 | if (remote_debug > 0) | |
2272 | printf_unfiltered ("Sending break\n"); | |
2273 | ||
2cd58942 | 2274 | serial_send_break (mips_desc); |
c906108c | 2275 | |
8eeafb51 KB |
2276 | target_mourn_inferior (); |
2277 | ||
c906108c SS |
2278 | #if 0 |
2279 | if (mips_is_open) | |
2280 | { | |
2281 | char cc; | |
2282 | ||
2283 | /* Send a ^C. */ | |
2284 | cc = '\003'; | |
2cd58942 | 2285 | serial_write (mips_desc, &cc, 1); |
c906108c SS |
2286 | sleep (1); |
2287 | target_mourn_inferior (); | |
2288 | } | |
2289 | #endif | |
2290 | } | |
2291 | ||
2292 | /* Start running on the target board. */ | |
2293 | ||
2294 | static void | |
383c0389 JB |
2295 | mips_create_inferior (struct target_ops *ops, char *execfile, |
2296 | char *args, char **env, int from_tty) | |
c906108c SS |
2297 | { |
2298 | CORE_ADDR entry_pt; | |
2299 | ||
2300 | if (args && *args) | |
2301 | { | |
2302 | warning ("\ | |
2303 | Can't pass arguments to remote MIPS board; arguments ignored."); | |
2304 | /* And don't try to use them on the next "run" command. */ | |
2305 | execute_command ("set args", 0); | |
2306 | } | |
2307 | ||
2308 | if (execfile == 0 || exec_bfd == 0) | |
2309 | error ("No executable file specified"); | |
2310 | ||
2311 | entry_pt = (CORE_ADDR) bfd_get_start_address (exec_bfd); | |
2312 | ||
2313 | init_wait_for_inferior (); | |
2314 | ||
fb14de7b | 2315 | regcache_write_pc (get_current_regcache (), entry_pt); |
c906108c SS |
2316 | } |
2317 | ||
8eeafb51 KB |
2318 | /* Clean up after a process. The bulk of the work is done in mips_close(), |
2319 | which is called when unpushing the target. */ | |
c906108c SS |
2320 | |
2321 | static void | |
383c0389 | 2322 | mips_mourn_inferior (struct target_ops *ops) |
c906108c SS |
2323 | { |
2324 | if (current_ops != NULL) | |
2325 | unpush_target (current_ops); | |
c906108c SS |
2326 | } |
2327 | \f | |
2328 | /* We can write a breakpoint and read the shadow contents in one | |
2329 | operation. */ | |
2330 | ||
aaab4dba AC |
2331 | /* Insert a breakpoint. On targets that don't have built-in |
2332 | breakpoint support, we read the contents of the target location and | |
2333 | stash it, then overwrite it with a breakpoint instruction. ADDR is | |
8181d85f DJ |
2334 | the target location in the target machine. BPT is the breakpoint |
2335 | being inserted or removed, which contains memory for saving the | |
2336 | target contents. */ | |
c906108c SS |
2337 | |
2338 | static int | |
a6d9a66e UW |
2339 | mips_insert_breakpoint (struct gdbarch *gdbarch, |
2340 | struct bp_target_info *bp_tgt) | |
c906108c SS |
2341 | { |
2342 | if (monitor_supports_breakpoints) | |
06b1d59c MR |
2343 | return mips_set_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE, |
2344 | BREAK_FETCH); | |
c906108c | 2345 | else |
a6d9a66e | 2346 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
2347 | } |
2348 | ||
477c84a7 KB |
2349 | /* Remove a breakpoint. */ |
2350 | ||
c906108c | 2351 | static int |
a6d9a66e UW |
2352 | mips_remove_breakpoint (struct gdbarch *gdbarch, |
2353 | struct bp_target_info *bp_tgt) | |
c906108c SS |
2354 | { |
2355 | if (monitor_supports_breakpoints) | |
06b1d59c MR |
2356 | return mips_clear_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE, |
2357 | BREAK_FETCH); | |
c906108c | 2358 | else |
a6d9a66e | 2359 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
2360 | } |
2361 | ||
c906108c SS |
2362 | /* Tell whether this target can support a hardware breakpoint. CNT |
2363 | is the number of hardware breakpoints already installed. This | |
d92524f1 | 2364 | implements the target_can_use_hardware_watchpoint macro. */ |
c906108c SS |
2365 | |
2366 | int | |
546143b6 | 2367 | mips_can_use_watchpoint (int type, int cnt, int othertype) |
c906108c | 2368 | { |
c5aa993b | 2369 | return cnt < MAX_LSI_BREAKPOINTS && strcmp (target_shortname, "lsi") == 0; |
c906108c SS |
2370 | } |
2371 | ||
2372 | ||
2373 | /* Compute a don't care mask for the region bounding ADDR and ADDR + LEN - 1. | |
2374 | This is used for memory ref breakpoints. */ | |
2375 | ||
2376 | static unsigned long | |
fba45db2 | 2377 | calculate_mask (CORE_ADDR addr, int len) |
c906108c SS |
2378 | { |
2379 | unsigned long mask; | |
2380 | int i; | |
2381 | ||
2382 | mask = addr ^ (addr + len - 1); | |
2383 | ||
2384 | for (i = 32; i >= 0; i--) | |
2385 | if (mask == 0) | |
2386 | break; | |
2387 | else | |
2388 | mask >>= 1; | |
2389 | ||
2390 | mask = (unsigned long) 0xffffffff >> i; | |
2391 | ||
2392 | return mask; | |
2393 | } | |
2394 | ||
2395 | ||
c906108c SS |
2396 | /* Set a data watchpoint. ADDR and LEN should be obvious. TYPE is 0 |
2397 | for a write watchpoint, 1 for a read watchpoint, or 2 for a read/write | |
2398 | watchpoint. */ | |
2399 | ||
2400 | int | |
546143b6 | 2401 | mips_insert_watchpoint (CORE_ADDR addr, int len, int type) |
c906108c | 2402 | { |
06b1d59c | 2403 | if (mips_set_breakpoint (addr, len, type)) |
c906108c SS |
2404 | return -1; |
2405 | ||
2406 | return 0; | |
2407 | } | |
2408 | ||
477c84a7 KB |
2409 | /* Remove a watchpoint. */ |
2410 | ||
c906108c | 2411 | int |
546143b6 | 2412 | mips_remove_watchpoint (CORE_ADDR addr, int len, int type) |
c906108c | 2413 | { |
06b1d59c | 2414 | if (mips_clear_breakpoint (addr, len, type)) |
c906108c SS |
2415 | return -1; |
2416 | ||
2417 | return 0; | |
2418 | } | |
2419 | ||
477c84a7 KB |
2420 | /* Test to see if a watchpoint has been hit. Return 1 if so; return 0, |
2421 | if not. */ | |
2422 | ||
c906108c | 2423 | int |
546143b6 | 2424 | mips_stopped_by_watchpoint (void) |
c906108c SS |
2425 | { |
2426 | return hit_watchpoint; | |
2427 | } | |
2428 | ||
2429 | ||
2430 | /* Insert a breakpoint. */ | |
2431 | ||
2432 | static int | |
06b1d59c | 2433 | mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type) |
c906108c | 2434 | { |
06b1d59c | 2435 | return mips_common_breakpoint (1, addr, len, type); |
c906108c SS |
2436 | } |
2437 | ||
2438 | ||
2439 | /* Clear a breakpoint. */ | |
2440 | ||
2441 | static int | |
06b1d59c | 2442 | mips_clear_breakpoint (CORE_ADDR addr, int len, enum break_type type) |
c906108c | 2443 | { |
06b1d59c | 2444 | return mips_common_breakpoint (0, addr, len, type); |
c906108c SS |
2445 | } |
2446 | ||
2447 | ||
2448 | /* Check the error code from the return packet for an LSI breakpoint | |
2449 | command. If there's no error, just return 0. If it's a warning, | |
2450 | print the warning text and return 0. If it's an error, print | |
2451 | the error text and return 1. <ADDR> is the address of the breakpoint | |
2452 | that was being set. <RERRFLG> is the error code returned by PMON. | |
06b1d59c | 2453 | This is a helper function for mips_common_breakpoint. */ |
c906108c SS |
2454 | |
2455 | static int | |
06b1d59c | 2456 | mips_check_lsi_error (CORE_ADDR addr, int rerrflg) |
c906108c SS |
2457 | { |
2458 | struct lsi_error *err; | |
bbd2783e | 2459 | const char *saddr = paddress (target_gdbarch, addr); |
c906108c SS |
2460 | |
2461 | if (rerrflg == 0) /* no error */ | |
2462 | return 0; | |
2463 | ||
2464 | /* Warnings can be ORed together, so check them all. */ | |
2465 | if (rerrflg & W_WARN) | |
2466 | { | |
2467 | if (monitor_warnings) | |
2468 | { | |
2469 | int found = 0; | |
2470 | for (err = lsi_warning_table; err->code != 0; err++) | |
2471 | { | |
2472 | if ((err->code & rerrflg) == err->code) | |
2473 | { | |
2474 | found = 1; | |
06b1d59c | 2475 | fprintf_unfiltered (gdb_stderr, "\ |
5af949e3 | 2476 | mips_common_breakpoint (%s): Warning: %s\n", |
c906108c SS |
2477 | saddr, |
2478 | err->string); | |
2479 | } | |
2480 | } | |
2481 | if (!found) | |
06b1d59c | 2482 | fprintf_unfiltered (gdb_stderr, "\ |
5af949e3 | 2483 | mips_common_breakpoint (%s): Unknown warning: 0x%x\n", |
c906108c SS |
2484 | saddr, |
2485 | rerrflg); | |
2486 | } | |
2487 | return 0; | |
2488 | } | |
2489 | ||
2490 | /* Errors are unique, i.e. can't be ORed together. */ | |
2491 | for (err = lsi_error_table; err->code != 0; err++) | |
2492 | { | |
2493 | if ((err->code & rerrflg) == err->code) | |
2494 | { | |
06b1d59c | 2495 | fprintf_unfiltered (gdb_stderr, "\ |
5af949e3 | 2496 | mips_common_breakpoint (%s): Error: %s\n", |
c906108c SS |
2497 | saddr, |
2498 | err->string); | |
2499 | return 1; | |
2500 | } | |
2501 | } | |
06b1d59c | 2502 | fprintf_unfiltered (gdb_stderr, "\ |
5af949e3 | 2503 | mips_common_breakpoint (%s): Unknown error: 0x%x\n", |
c906108c SS |
2504 | saddr, |
2505 | rerrflg); | |
2506 | return 1; | |
2507 | } | |
2508 | ||
2509 | ||
2510 | /* This routine sends a breakpoint command to the remote target. | |
2511 | ||
2512 | <SET> is 1 if setting a breakpoint, or 0 if clearing a breakpoint. | |
2513 | <ADDR> is the address of the breakpoint. | |
2514 | <LEN> the length of the region to break on. | |
2515 | <TYPE> is the type of breakpoint: | |
c5aa993b JM |
2516 | 0 = write (BREAK_WRITE) |
2517 | 1 = read (BREAK_READ) | |
2518 | 2 = read/write (BREAK_ACCESS) | |
2519 | 3 = instruction fetch (BREAK_FETCH) | |
c906108c SS |
2520 | |
2521 | Return 0 if successful; otherwise 1. */ | |
2522 | ||
2523 | static int | |
06b1d59c | 2524 | mips_common_breakpoint (int set, CORE_ADDR addr, int len, enum break_type type) |
c906108c | 2525 | { |
5af949e3 | 2526 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
c906108c SS |
2527 | char buf[DATA_MAXLEN + 1]; |
2528 | char cmd, rcmd; | |
2529 | int rpid, rerrflg, rresponse, rlen; | |
2530 | int nfields; | |
2531 | ||
1cf3db46 | 2532 | addr = gdbarch_addr_bits_remove (target_gdbarch, addr); |
c906108c SS |
2533 | |
2534 | if (mips_monitor == MON_LSI) | |
2535 | { | |
c5aa993b | 2536 | if (set == 0) /* clear breakpoint */ |
c906108c SS |
2537 | { |
2538 | /* The LSI PMON "clear breakpoint" has this form: | |
c5aa993b JM |
2539 | <pid> 'b' <bptn> 0x0 |
2540 | reply: | |
2541 | <pid> 'b' 0x0 <code> | |
c906108c SS |
2542 | |
2543 | <bptn> is a breakpoint number returned by an earlier 'B' command. | |
2544 | Possible return codes: OK, E_BPT. */ | |
2545 | ||
2546 | int i; | |
2547 | ||
2548 | /* Search for the breakpoint in the table. */ | |
2549 | for (i = 0; i < MAX_LSI_BREAKPOINTS; i++) | |
2550 | if (lsi_breakpoints[i].type == type | |
2551 | && lsi_breakpoints[i].addr == addr | |
2552 | && lsi_breakpoints[i].len == len) | |
2553 | break; | |
2554 | ||
2555 | /* Clear the table entry and tell PMON to clear the breakpoint. */ | |
2556 | if (i == MAX_LSI_BREAKPOINTS) | |
2557 | { | |
06b1d59c MR |
2558 | warning ("\ |
2559 | mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n", | |
5af949e3 | 2560 | paddress (target_gdbarch, addr)); |
c906108c SS |
2561 | return 1; |
2562 | } | |
2563 | ||
2564 | lsi_breakpoints[i].type = BREAK_UNUSED; | |
2565 | sprintf (buf, "0x0 b 0x%x 0x0", i); | |
2566 | mips_send_packet (buf, 1); | |
2567 | ||
2568 | rlen = mips_receive_packet (buf, 1, mips_receive_wait); | |
2569 | buf[rlen] = '\0'; | |
2570 | ||
2571 | nfields = sscanf (buf, "0x%x b 0x0 0x%x", &rpid, &rerrflg); | |
2572 | if (nfields != 2) | |
06b1d59c MR |
2573 | mips_error ("\ |
2574 | mips_common_breakpoint: Bad response from remote board: %s", | |
2575 | buf); | |
c906108c | 2576 | |
06b1d59c | 2577 | return (mips_check_lsi_error (addr, rerrflg)); |
c906108c | 2578 | } |
c5aa993b JM |
2579 | else |
2580 | /* set a breakpoint */ | |
c906108c SS |
2581 | { |
2582 | /* The LSI PMON "set breakpoint" command has this form: | |
c5aa993b JM |
2583 | <pid> 'B' <addr> 0x0 |
2584 | reply: | |
2585 | <pid> 'B' <bptn> <code> | |
c906108c SS |
2586 | |
2587 | The "set data breakpoint" command has this form: | |
2588 | ||
c5aa993b | 2589 | <pid> 'A' <addr1> <type> [<addr2> [<value>]] |
c906108c | 2590 | |
c5aa993b JM |
2591 | where: type= "0x1" = read |
2592 | "0x2" = write | |
2593 | "0x3" = access (read or write) | |
c906108c SS |
2594 | |
2595 | The reply returns two values: | |
c5aa993b JM |
2596 | bptn - a breakpoint number, which is a small integer with |
2597 | possible values of zero through 255. | |
2598 | code - an error return code, a value of zero indicates a | |
2599 | succesful completion, other values indicate various | |
2600 | errors and warnings. | |
2601 | ||
c906108c SS |
2602 | Possible return codes: OK, W_QAL, E_QAL, E_OUT, E_NON. |
2603 | ||
c5aa993b | 2604 | */ |
c906108c SS |
2605 | |
2606 | if (type == BREAK_FETCH) /* instruction breakpoint */ | |
2607 | { | |
2608 | cmd = 'B'; | |
5af949e3 | 2609 | sprintf (buf, "0x0 B 0x%s 0x0", phex_nz (addr, addr_size)); |
c906108c | 2610 | } |
c5aa993b JM |
2611 | else |
2612 | /* watchpoint */ | |
c906108c SS |
2613 | { |
2614 | cmd = 'A'; | |
5af949e3 UW |
2615 | sprintf (buf, "0x0 A 0x%s 0x%x 0x%s", |
2616 | phex_nz (addr, addr_size), | |
2617 | type == BREAK_READ ? 1 : (type == BREAK_WRITE ? 2 : 3), | |
2618 | phex_nz (addr + len - 1, addr_size)); | |
c906108c SS |
2619 | } |
2620 | mips_send_packet (buf, 1); | |
2621 | ||
2622 | rlen = mips_receive_packet (buf, 1, mips_receive_wait); | |
2623 | buf[rlen] = '\0'; | |
2624 | ||
2625 | nfields = sscanf (buf, "0x%x %c 0x%x 0x%x", | |
2626 | &rpid, &rcmd, &rresponse, &rerrflg); | |
2627 | if (nfields != 4 || rcmd != cmd || rresponse > 255) | |
06b1d59c MR |
2628 | mips_error ("\ |
2629 | mips_common_breakpoint: Bad response from remote board: %s", | |
2630 | buf); | |
c906108c SS |
2631 | |
2632 | if (rerrflg != 0) | |
06b1d59c | 2633 | if (mips_check_lsi_error (addr, rerrflg)) |
c906108c SS |
2634 | return 1; |
2635 | ||
2636 | /* rresponse contains PMON's breakpoint number. Record the | |
2637 | information for this breakpoint so we can clear it later. */ | |
2638 | lsi_breakpoints[rresponse].type = type; | |
2639 | lsi_breakpoints[rresponse].addr = addr; | |
c5aa993b | 2640 | lsi_breakpoints[rresponse].len = len; |
c906108c SS |
2641 | |
2642 | return 0; | |
2643 | } | |
2644 | } | |
2645 | else | |
2646 | { | |
2647 | /* On non-LSI targets, the breakpoint command has this form: | |
c5aa993b JM |
2648 | 0x0 <CMD> <ADDR> <MASK> <FLAGS> |
2649 | <MASK> is a don't care mask for addresses. | |
2650 | <FLAGS> is any combination of `r', `w', or `f' for read/write/fetch. | |
c906108c SS |
2651 | */ |
2652 | unsigned long mask; | |
2653 | ||
2654 | mask = calculate_mask (addr, len); | |
2655 | addr &= ~mask; | |
2656 | ||
c5aa993b JM |
2657 | if (set) /* set a breakpoint */ |
2658 | { | |
c906108c SS |
2659 | char *flags; |
2660 | switch (type) | |
2661 | { | |
c5aa993b | 2662 | case BREAK_WRITE: /* write */ |
c906108c SS |
2663 | flags = "w"; |
2664 | break; | |
c5aa993b | 2665 | case BREAK_READ: /* read */ |
c906108c SS |
2666 | flags = "r"; |
2667 | break; | |
c5aa993b | 2668 | case BREAK_ACCESS: /* read/write */ |
c906108c SS |
2669 | flags = "rw"; |
2670 | break; | |
c5aa993b | 2671 | case BREAK_FETCH: /* fetch */ |
c906108c SS |
2672 | flags = "f"; |
2673 | break; | |
2674 | default: | |
e2e0b3e5 | 2675 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
2676 | } |
2677 | ||
2678 | cmd = 'B'; | |
5af949e3 UW |
2679 | sprintf (buf, "0x0 B 0x%s 0x%s %s", phex_nz (addr, addr_size), |
2680 | phex_nz (mask, addr_size), flags); | |
c906108c SS |
2681 | } |
2682 | else | |
2683 | { | |
2684 | cmd = 'b'; | |
5af949e3 | 2685 | sprintf (buf, "0x0 b 0x%s", phex_nz (addr, addr_size)); |
c906108c SS |
2686 | } |
2687 | ||
2688 | mips_send_packet (buf, 1); | |
2689 | ||
2690 | rlen = mips_receive_packet (buf, 1, mips_receive_wait); | |
2691 | buf[rlen] = '\0'; | |
2692 | ||
2693 | nfields = sscanf (buf, "0x%x %c 0x%x 0x%x", | |
2694 | &rpid, &rcmd, &rerrflg, &rresponse); | |
2695 | ||
2696 | if (nfields != 4 || rcmd != cmd) | |
06b1d59c MR |
2697 | mips_error ("\ |
2698 | mips_common_breakpoint: Bad response from remote board: %s", | |
c906108c SS |
2699 | buf); |
2700 | ||
2701 | if (rerrflg != 0) | |
2702 | { | |
2703 | /* Ddb returns "0x0 b 0x16 0x0\000", whereas | |
2704 | Cogent returns "0x0 b 0xffffffff 0x16\000": */ | |
2705 | if (mips_monitor == MON_DDB) | |
2706 | rresponse = rerrflg; | |
c5aa993b | 2707 | if (rresponse != 22) /* invalid argument */ |
06b1d59c | 2708 | fprintf_unfiltered (gdb_stderr, "\ |
5af949e3 UW |
2709 | mips_common_breakpoint (%s): Got error: 0x%x\n", |
2710 | paddress (target_gdbarch, addr), rresponse); | |
c906108c SS |
2711 | return 1; |
2712 | } | |
2713 | } | |
2714 | return 0; | |
2715 | } | |
2716 | \f | |
477c84a7 KB |
2717 | /* Send one S record as specified by SREC of length LEN, starting |
2718 | at ADDR. Note, however, that ADDR is not used except to provide | |
2719 | a useful message to the user in the event that a NACK is received | |
2720 | from the board. */ | |
2721 | ||
c906108c | 2722 | static void |
fba45db2 | 2723 | send_srec (char *srec, int len, CORE_ADDR addr) |
c906108c SS |
2724 | { |
2725 | while (1) | |
2726 | { | |
2727 | int ch; | |
2728 | ||
2cd58942 | 2729 | serial_write (mips_desc, srec, len); |
c906108c | 2730 | |
688991e6 | 2731 | ch = mips_readchar (remote_timeout); |
c906108c SS |
2732 | |
2733 | switch (ch) | |
2734 | { | |
2735 | case SERIAL_TIMEOUT: | |
2736 | error ("Timeout during download."); | |
2737 | break; | |
2738 | case 0x6: /* ACK */ | |
2739 | return; | |
2740 | case 0x15: /* NACK */ | |
5af949e3 UW |
2741 | fprintf_unfiltered (gdb_stderr, "Download got a NACK at byte %s! Retrying.\n", |
2742 | paddress (target_gdbarch, addr)); | |
c906108c SS |
2743 | continue; |
2744 | default: | |
2745 | error ("Download got unexpected ack char: 0x%x, retrying.\n", ch); | |
2746 | } | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | /* Download a binary file by converting it to S records. */ | |
2751 | ||
2752 | static void | |
fba45db2 | 2753 | mips_load_srec (char *args) |
c906108c SS |
2754 | { |
2755 | bfd *abfd; | |
2756 | asection *s; | |
2757 | char *buffer, srec[1024]; | |
2758 | unsigned int i; | |
2759 | unsigned int srec_frame = 200; | |
2760 | int reclen; | |
2761 | static int hashmark = 1; | |
2762 | ||
2763 | buffer = alloca (srec_frame * 2 + 256); | |
2764 | ||
2765 | abfd = bfd_openr (args, 0); | |
2766 | if (!abfd) | |
2767 | { | |
2768 | printf_filtered ("Unable to open file %s\n", args); | |
2769 | return; | |
2770 | } | |
2771 | ||
2772 | if (bfd_check_format (abfd, bfd_object) == 0) | |
2773 | { | |
2774 | printf_filtered ("File is not an object file\n"); | |
2775 | return; | |
2776 | } | |
2777 | ||
2778 | /* This actually causes a download in the IDT binary format: */ | |
2779 | mips_send_command (LOAD_CMD, 0); | |
2780 | ||
2781 | for (s = abfd->sections; s; s = s->next) | |
2782 | { | |
2783 | if (s->flags & SEC_LOAD) | |
2784 | { | |
2785 | unsigned int numbytes; | |
2786 | ||
d4f3574e SS |
2787 | /* FIXME! vma too small????? */ |
2788 | printf_filtered ("%s\t: 0x%4lx .. 0x%4lx ", s->name, | |
2789 | (long) s->vma, | |
2c500098 | 2790 | (long) (s->vma + bfd_get_section_size (s))); |
c906108c SS |
2791 | gdb_flush (gdb_stdout); |
2792 | ||
2c500098 | 2793 | for (i = 0; i < bfd_get_section_size (s); i += numbytes) |
c906108c | 2794 | { |
2c500098 | 2795 | numbytes = min (srec_frame, bfd_get_section_size (s) - i); |
c906108c SS |
2796 | |
2797 | bfd_get_section_contents (abfd, s, buffer, i, numbytes); | |
2798 | ||
1fa79fac MS |
2799 | reclen = mips_make_srec (srec, '3', s->vma + i, |
2800 | buffer, numbytes); | |
c906108c SS |
2801 | send_srec (srec, reclen, s->vma + i); |
2802 | ||
9a4105ab AC |
2803 | if (deprecated_ui_load_progress_hook) |
2804 | deprecated_ui_load_progress_hook (s->name, i); | |
7829b833 | 2805 | |
c906108c SS |
2806 | if (hashmark) |
2807 | { | |
2808 | putchar_unfiltered ('#'); | |
2809 | gdb_flush (gdb_stdout); | |
2810 | } | |
2811 | ||
c5aa993b JM |
2812 | } /* Per-packet (or S-record) loop */ |
2813 | ||
c906108c | 2814 | putchar_unfiltered ('\n'); |
c5aa993b | 2815 | } /* Loadable sections */ |
c906108c | 2816 | } |
c5aa993b | 2817 | if (hashmark) |
c906108c | 2818 | putchar_unfiltered ('\n'); |
c5aa993b | 2819 | |
c906108c SS |
2820 | /* Write a type 7 terminator record. no data for a type 7, and there |
2821 | is no data, so len is 0. */ | |
2822 | ||
2823 | reclen = mips_make_srec (srec, '7', abfd->start_address, NULL, 0); | |
2824 | ||
2825 | send_srec (srec, reclen, abfd->start_address); | |
2826 | ||
2cd58942 | 2827 | serial_flush_input (mips_desc); |
c906108c SS |
2828 | } |
2829 | ||
2830 | /* | |
2831 | * mips_make_srec -- make an srecord. This writes each line, one at a | |
c5aa993b JM |
2832 | * time, each with it's own header and trailer line. |
2833 | * An srecord looks like this: | |
c906108c SS |
2834 | * |
2835 | * byte count-+ address | |
2836 | * start ---+ | | data +- checksum | |
c5aa993b JM |
2837 | * | | | | |
2838 | * S01000006F6B692D746573742E73726563E4 | |
2839 | * S315000448600000000000000000FC00005900000000E9 | |
2840 | * S31A0004000023C1400037DE00F023604000377B009020825000348D | |
2841 | * S30B0004485A0000000000004E | |
2842 | * S70500040000F6 | |
c906108c | 2843 | * |
c5aa993b | 2844 | * S<type><length><address><data><checksum> |
c906108c SS |
2845 | * |
2846 | * Where | |
2847 | * - length | |
2848 | * is the number of bytes following upto the checksum. Note that | |
2849 | * this is not the number of chars following, since it takes two | |
2850 | * chars to represent a byte. | |
2851 | * - type | |
2852 | * is one of: | |
2853 | * 0) header record | |
2854 | * 1) two byte address data record | |
2855 | * 2) three byte address data record | |
2856 | * 3) four byte address data record | |
2857 | * 7) four byte address termination record | |
2858 | * 8) three byte address termination record | |
2859 | * 9) two byte address termination record | |
2860 | * | |
2861 | * - address | |
2862 | * is the start address of the data following, or in the case of | |
2863 | * a termination record, the start address of the image | |
2864 | * - data | |
2865 | * is the data. | |
2866 | * - checksum | |
c5aa993b | 2867 | * is the sum of all the raw byte data in the record, from the length |
c906108c SS |
2868 | * upwards, modulo 256 and subtracted from 255. |
2869 | * | |
2870 | * This routine returns the length of the S-record. | |
2871 | * | |
2872 | */ | |
2873 | ||
2874 | static int | |
fba45db2 KB |
2875 | mips_make_srec (char *buf, int type, CORE_ADDR memaddr, unsigned char *myaddr, |
2876 | int len) | |
c906108c SS |
2877 | { |
2878 | unsigned char checksum; | |
2879 | int i; | |
2880 | ||
2881 | /* Create the header for the srec. addr_size is the number of bytes in the address, | |
2882 | and 1 is the number of bytes in the count. */ | |
2883 | ||
2884 | /* FIXME!! bigger buf required for 64-bit! */ | |
2885 | buf[0] = 'S'; | |
2886 | buf[1] = type; | |
2887 | buf[2] = len + 4 + 1; /* len + 4 byte address + 1 byte checksum */ | |
2888 | /* This assumes S3 style downloads (4byte addresses). There should | |
2889 | probably be a check, or the code changed to make it more | |
2890 | explicit. */ | |
2891 | buf[3] = memaddr >> 24; | |
2892 | buf[4] = memaddr >> 16; | |
2893 | buf[5] = memaddr >> 8; | |
2894 | buf[6] = memaddr; | |
2895 | memcpy (&buf[7], myaddr, len); | |
2896 | ||
2897 | /* Note that the checksum is calculated on the raw data, not the | |
2898 | hexified data. It includes the length, address and the data | |
2899 | portions of the packet. */ | |
2900 | checksum = 0; | |
2901 | buf += 2; /* Point at length byte */ | |
2902 | for (i = 0; i < len + 4 + 1; i++) | |
2903 | checksum += *buf++; | |
2904 | ||
2905 | *buf = ~checksum; | |
2906 | ||
2907 | return len + 8; | |
2908 | } | |
2909 | ||
2910 | /* The following manifest controls whether we enable the simple flow | |
2911 | control support provided by the monitor. If enabled the code will | |
2912 | wait for an affirmative ACK between transmitting packets. */ | |
2913 | #define DOETXACK (1) | |
2914 | ||
2915 | /* The PMON fast-download uses an encoded packet format constructed of | |
2916 | 3byte data packets (encoded as 4 printable ASCII characters), and | |
2917 | escape sequences (preceded by a '/'): | |
2918 | ||
c5aa993b JM |
2919 | 'K' clear checksum |
2920 | 'C' compare checksum (12bit value, not included in checksum calculation) | |
2921 | 'S' define symbol name (for addr) terminated with "," and padded to 4char boundary | |
2922 | 'Z' zero fill multiple of 3bytes | |
2923 | 'B' byte (12bit encoded value, of 8bit data) | |
2924 | 'A' address (36bit encoded value) | |
2925 | 'E' define entry as original address, and exit load | |
c906108c SS |
2926 | |
2927 | The packets are processed in 4 character chunks, so the escape | |
2928 | sequences that do not have any data (or variable length data) | |
2929 | should be padded to a 4 character boundary. The decoder will give | |
2930 | an error if the complete message block size is not a multiple of | |
2931 | 4bytes (size of record). | |
2932 | ||
2933 | The encoding of numbers is done in 6bit fields. The 6bit value is | |
2934 | used to index into this string to get the specific character | |
2935 | encoding for the value: */ | |
2936 | static char encoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789,."; | |
2937 | ||
2938 | /* Convert the number of bits required into an encoded number, 6bits | |
2939 | at a time (range 0..63). Keep a checksum if required (passed | |
2940 | pointer non-NULL). The function returns the number of encoded | |
2941 | characters written into the buffer. */ | |
477c84a7 | 2942 | |
c906108c | 2943 | static int |
fba45db2 | 2944 | pmon_makeb64 (unsigned long v, char *p, int n, int *chksum) |
c906108c SS |
2945 | { |
2946 | int count = (n / 6); | |
2947 | ||
c5aa993b JM |
2948 | if ((n % 12) != 0) |
2949 | { | |
2950 | fprintf_unfiltered (gdb_stderr, | |
2951 | "Fast encoding bitcount must be a multiple of 12bits: %dbit%s\n", n, (n == 1) ? "" : "s"); | |
2952 | return (0); | |
2953 | } | |
2954 | if (n > 36) | |
2955 | { | |
2956 | fprintf_unfiltered (gdb_stderr, | |
2957 | "Fast encoding cannot process more than 36bits at the moment: %dbits\n", n); | |
2958 | return (0); | |
2959 | } | |
c906108c SS |
2960 | |
2961 | /* Deal with the checksum: */ | |
c5aa993b JM |
2962 | if (chksum != NULL) |
2963 | { | |
2964 | switch (n) | |
2965 | { | |
2966 | case 36: | |
2967 | *chksum += ((v >> 24) & 0xFFF); | |
2968 | case 24: | |
2969 | *chksum += ((v >> 12) & 0xFFF); | |
2970 | case 12: | |
2971 | *chksum += ((v >> 0) & 0xFFF); | |
2972 | } | |
c906108c | 2973 | } |
c906108c | 2974 | |
c5aa993b JM |
2975 | do |
2976 | { | |
2977 | n -= 6; | |
2978 | *p++ = encoding[(v >> n) & 0x3F]; | |
2979 | } | |
2980 | while (n > 0); | |
c906108c | 2981 | |
c5aa993b | 2982 | return (count); |
c906108c SS |
2983 | } |
2984 | ||
2985 | /* Shorthand function (that could be in-lined) to output the zero-fill | |
2986 | escape sequence into the data stream. */ | |
477c84a7 | 2987 | |
c906108c | 2988 | static int |
fba45db2 | 2989 | pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum) |
c906108c SS |
2990 | { |
2991 | int count; | |
2992 | ||
c5aa993b | 2993 | sprintf (*buff, "/Z"); |
c906108c SS |
2994 | count = pmon_makeb64 (*amount, (*buff + 2), 12, chksum); |
2995 | *buff += (count + 2); | |
2996 | *amount = 0; | |
c5aa993b | 2997 | return (recsize + count + 2); |
c906108c SS |
2998 | } |
2999 | ||
477c84a7 KB |
3000 | /* Add the checksum specified by *VALUE to end of the record under |
3001 | construction. *BUF specifies the location at which to begin | |
3002 | writing characters comprising the checksum information. RECSIZE | |
3003 | specifies the size of the record constructed thus far. (A trailing | |
3004 | NUL character may be present in the buffer holding the record, but | |
3005 | the record size does not include this character.) | |
3006 | ||
3007 | Return the total size of the record after adding the checksum escape, | |
3008 | the checksum itself, and the trailing newline. | |
3009 | ||
3010 | The checksum specified by *VALUE is zeroed out prior to returning. | |
3011 | Additionally, *BUF is updated to refer to the location just beyond | |
3012 | the record elements added by this call. */ | |
3013 | ||
c906108c | 3014 | static int |
fba45db2 | 3015 | pmon_checkset (int recsize, char **buff, int *value) |
c906108c SS |
3016 | { |
3017 | int count; | |
3018 | ||
3019 | /* Add the checksum (without updating the value): */ | |
3020 | sprintf (*buff, "/C"); | |
3021 | count = pmon_makeb64 (*value, (*buff + 2), 12, NULL); | |
3022 | *buff += (count + 2); | |
3023 | sprintf (*buff, "\n"); | |
c5aa993b | 3024 | *buff += 2; /* include zero terminator */ |
c906108c SS |
3025 | /* Forcing a checksum validation clears the sum: */ |
3026 | *value = 0; | |
c5aa993b | 3027 | return (recsize + count + 3); |
c906108c SS |
3028 | } |
3029 | ||
3030 | /* Amount of padding we leave after at the end of the output buffer, | |
3031 | for the checksum and line termination characters: */ | |
3032 | #define CHECKSIZE (4 + 4 + 4 + 2) | |
3033 | /* zero-fill, checksum, transfer end and line termination space. */ | |
3034 | ||
3035 | /* The amount of binary data loaded from the object file in a single | |
3036 | operation: */ | |
3037 | #define BINCHUNK (1024) | |
3038 | ||
3039 | /* Maximum line of data accepted by the monitor: */ | |
3040 | #define MAXRECSIZE (550) | |
3041 | /* NOTE: This constant depends on the monitor being used. This value | |
3042 | is for PMON 5.x on the Cogent Vr4300 board. */ | |
3043 | ||
477c84a7 KB |
3044 | /* Create a FastLoad format record. |
3045 | ||
3046 | *OUTBUF is the buffer into which a FastLoad formatted record is | |
3047 | written. On return, the pointer position represented by *OUTBUF | |
3048 | is updated to point at the end of the data, i.e. the next position | |
3049 | in the buffer that may be written. No attempt is made to NUL- | |
3050 | terminate this portion of the record written to the buffer. | |
3051 | ||
3052 | INBUF contains the binary input data from which the FastLoad | |
3053 | formatted record will be built. *INPTR is an index into this | |
3054 | buffer. *INPTR is updated as the input is consumed. Thus, on | |
3055 | return, the caller has access to the position of the next input | |
3056 | byte yet to be processed. INAMOUNT is the size, in bytes, of the | |
3057 | input data. | |
3058 | ||
3059 | *RECSIZE will be written with the size of the record written to the | |
3060 | output buffer prior to returning. This size does not include a | |
3061 | NUL-termination byte as none is written to the output buffer. | |
3062 | ||
3063 | *CSUM is the output buffer checksum. It is updated as data is | |
3064 | written to the output buffer. | |
3065 | ||
3066 | *ZEROFILL is the current number of 3-byte zero sequences that have | |
3067 | been encountered. It is both an input and an output to this | |
3068 | function. */ | |
3069 | ||
c906108c | 3070 | static void |
fba45db2 KB |
3071 | pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr, |
3072 | int inamount, int *recsize, unsigned int *csum, | |
3073 | unsigned int *zerofill) | |
c906108c SS |
3074 | { |
3075 | int count = 0; | |
3076 | char *p = *outbuf; | |
3077 | ||
3078 | /* This is a simple check to ensure that our data will fit within | |
3079 | the maximum allowable record size. Each record output is 4bytes | |
3080 | in length. We must allow space for a pending zero fill command, | |
3081 | the record, and a checksum record. */ | |
c5aa993b JM |
3082 | while ((*recsize < (MAXRECSIZE - CHECKSIZE)) && ((inamount - *inptr) > 0)) |
3083 | { | |
3084 | /* Process the binary data: */ | |
3085 | if ((inamount - *inptr) < 3) | |
3086 | { | |
3087 | if (*zerofill != 0) | |
3088 | *recsize = pmon_zeroset (*recsize, &p, zerofill, csum); | |
3089 | sprintf (p, "/B"); | |
3090 | count = pmon_makeb64 (inbuf[*inptr], &p[2], 12, csum); | |
3091 | p += (2 + count); | |
3092 | *recsize += (2 + count); | |
3093 | (*inptr)++; | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | unsigned int value = ((inbuf[*inptr + 0] << 16) | (inbuf[*inptr + 1] << 8) | inbuf[*inptr + 2]); | |
3098 | /* Simple check for zero data. TODO: A better check would be | |
3099 | to check the last, and then the middle byte for being zero | |
3100 | (if the first byte is not). We could then check for | |
3101 | following runs of zeros, and if above a certain size it is | |
3102 | worth the 4 or 8 character hit of the byte insertions used | |
3103 | to pad to the start of the zeroes. NOTE: This also depends | |
3104 | on the alignment at the end of the zero run. */ | |
3105 | if (value == 0x00000000) | |
3106 | { | |
3107 | (*zerofill)++; | |
3108 | if (*zerofill == 0xFFF) /* 12bit counter */ | |
3109 | *recsize = pmon_zeroset (*recsize, &p, zerofill, csum); | |
3110 | } | |
3111 | else | |
3112 | { | |
3113 | if (*zerofill != 0) | |
3114 | *recsize = pmon_zeroset (*recsize, &p, zerofill, csum); | |
3115 | count = pmon_makeb64 (value, p, 24, csum); | |
3116 | p += count; | |
3117 | *recsize += count; | |
3118 | } | |
3119 | *inptr += 3; | |
3120 | } | |
c906108c | 3121 | } |
c906108c SS |
3122 | |
3123 | *outbuf = p; | |
3124 | return; | |
3125 | } | |
3126 | ||
477c84a7 KB |
3127 | /* Attempt to read an ACK. If an ACK is not read in a timely manner, |
3128 | output the message specified by MESG. Return -1 for failure, 0 | |
3129 | for success. */ | |
3130 | ||
c906108c | 3131 | static int |
fba45db2 | 3132 | pmon_check_ack (char *mesg) |
c906108c SS |
3133 | { |
3134 | #if defined(DOETXACK) | |
3135 | int c; | |
3136 | ||
3137 | if (!tftp_in_use) | |
3138 | { | |
2cd58942 | 3139 | c = serial_readchar (udp_in_use ? udp_desc : mips_desc, |
688991e6 | 3140 | remote_timeout); |
c906108c SS |
3141 | if ((c == SERIAL_TIMEOUT) || (c != 0x06)) |
3142 | { | |
3143 | fprintf_unfiltered (gdb_stderr, | |
3144 | "Failed to receive valid ACK for %s\n", mesg); | |
c5aa993b | 3145 | return (-1); /* terminate the download */ |
c906108c SS |
3146 | } |
3147 | } | |
3148 | #endif /* DOETXACK */ | |
c5aa993b | 3149 | return (0); |
c906108c SS |
3150 | } |
3151 | ||
3152 | /* pmon_download - Send a sequence of characters to the PMON download port, | |
3153 | which is either a serial port or a UDP socket. */ | |
3154 | ||
3155 | static void | |
fba45db2 | 3156 | pmon_start_download (void) |
c906108c SS |
3157 | { |
3158 | if (tftp_in_use) | |
3159 | { | |
3160 | /* Create the temporary download file. */ | |
3161 | if ((tftp_file = fopen (tftp_localname, "w")) == NULL) | |
3162 | perror_with_name (tftp_localname); | |
3163 | } | |
3164 | else | |
3165 | { | |
3166 | mips_send_command (udp_in_use ? LOAD_CMD_UDP : LOAD_CMD, 0); | |
3167 | mips_expect ("Downloading from "); | |
3168 | mips_expect (udp_in_use ? "udp" : "tty0"); | |
3169 | mips_expect (", ^C to abort\r\n"); | |
3170 | } | |
3171 | } | |
3172 | ||
477c84a7 KB |
3173 | /* Look for the string specified by STRING sent from the target board |
3174 | during a download operation. If the string in question is not | |
3175 | seen, output an error message, remove the temporary file, if | |
3176 | appropriate, and return 0. Otherwise, return 1 to indicate | |
3177 | success. */ | |
3178 | ||
c906108c SS |
3179 | static int |
3180 | mips_expect_download (char *string) | |
3181 | { | |
3182 | if (!mips_expect (string)) | |
3183 | { | |
3184 | fprintf_unfiltered (gdb_stderr, "Load did not complete successfully.\n"); | |
3185 | if (tftp_in_use) | |
3186 | remove (tftp_localname); /* Remove temporary file */ | |
3187 | return 0; | |
3188 | } | |
3189 | else | |
3190 | return 1; | |
3191 | } | |
3192 | ||
477c84a7 KB |
3193 | /* Look for messages from the target board associated with the entry |
3194 | address. | |
3195 | ||
3196 | NOTE: This function doesn't indicate success or failure, so we | |
3197 | have no way to determine whether or not the output from the board | |
3198 | was correctly seen. However, given that other items are checked | |
3199 | after this, it seems unlikely that those checks will pass if this | |
3200 | check doesn't first (silently) pass. */ | |
3201 | ||
688991e6 AC |
3202 | static void |
3203 | pmon_check_entry_address (char *entry_address, int final) | |
3204 | { | |
3205 | char hexnumber[9]; /* includes '\0' space */ | |
3206 | mips_expect_timeout (entry_address, tftp_in_use ? 15 : remote_timeout); | |
3207 | sprintf (hexnumber, "%x", final); | |
3208 | mips_expect (hexnumber); | |
3209 | mips_expect ("\r\n"); | |
3210 | } | |
3211 | ||
477c84a7 KB |
3212 | /* Look for messages from the target board showing the total number of |
3213 | bytes downloaded to the board. Output 1 for success if the tail | |
3214 | end of the message was read correctly, 0 otherwise. */ | |
3215 | ||
688991e6 AC |
3216 | static int |
3217 | pmon_check_total (int bintotal) | |
3218 | { | |
3219 | char hexnumber[9]; /* includes '\0' space */ | |
3220 | mips_expect ("\r\ntotal = 0x"); | |
3221 | sprintf (hexnumber, "%x", bintotal); | |
3222 | mips_expect (hexnumber); | |
3223 | return mips_expect_download (" bytes\r\n"); | |
3224 | } | |
3225 | ||
477c84a7 KB |
3226 | /* Look for the termination messages associated with the end of |
3227 | a download to the board. | |
3228 | ||
3229 | Also, when `tftp_in_use' is set, issue the load command to the | |
3230 | board causing the file to be transferred. (This is done prior | |
3231 | to looking for the above mentioned termination messages.) */ | |
3232 | ||
c906108c | 3233 | static void |
fba45db2 | 3234 | pmon_end_download (int final, int bintotal) |
c906108c | 3235 | { |
c5aa993b | 3236 | char hexnumber[9]; /* includes '\0' space */ |
c906108c SS |
3237 | |
3238 | if (tftp_in_use) | |
3239 | { | |
3240 | static char *load_cmd_prefix = "load -b -s "; | |
3241 | char *cmd; | |
3242 | struct stat stbuf; | |
3243 | ||
3244 | /* Close off the temporary file containing the load data. */ | |
3245 | fclose (tftp_file); | |
3246 | tftp_file = NULL; | |
3247 | ||
3248 | /* Make the temporary file readable by the world. */ | |
3249 | if (stat (tftp_localname, &stbuf) == 0) | |
3250 | chmod (tftp_localname, stbuf.st_mode | S_IROTH); | |
3251 | ||
3252 | /* Must reinitialize the board to prevent PMON from crashing. */ | |
bbd2783e KB |
3253 | if (mips_monitor != MON_ROCKHOPPER) |
3254 | mips_send_command ("initEther\r", -1); | |
c906108c SS |
3255 | |
3256 | /* Send the load command. */ | |
3257 | cmd = xmalloc (strlen (load_cmd_prefix) + strlen (tftp_name) + 2); | |
3258 | strcpy (cmd, load_cmd_prefix); | |
3259 | strcat (cmd, tftp_name); | |
3260 | strcat (cmd, "\r"); | |
3261 | mips_send_command (cmd, 0); | |
b8c9b27d | 3262 | xfree (cmd); |
c906108c SS |
3263 | if (!mips_expect_download ("Downloading from ")) |
3264 | return; | |
3265 | if (!mips_expect_download (tftp_name)) | |
3266 | return; | |
3267 | if (!mips_expect_download (", ^C to abort\r\n")) | |
3268 | return; | |
3269 | } | |
3270 | ||
3271 | /* Wait for the stuff that PMON prints after the load has completed. | |
3272 | The timeout value for use in the tftp case (15 seconds) was picked | |
3273 | arbitrarily but might be too small for really large downloads. FIXME. */ | |
688991e6 | 3274 | switch (mips_monitor) |
c906108c | 3275 | { |
688991e6 AC |
3276 | case MON_LSI: |
3277 | pmon_check_ack ("termination"); | |
3278 | pmon_check_entry_address ("Entry address is ", final); | |
3279 | if (!pmon_check_total (bintotal)) | |
3280 | return; | |
3281 | break; | |
bbd2783e KB |
3282 | case MON_ROCKHOPPER: |
3283 | if (!pmon_check_total (bintotal)) | |
3284 | return; | |
3285 | pmon_check_entry_address ("Entry Address = ", final); | |
3286 | break; | |
688991e6 AC |
3287 | default: |
3288 | pmon_check_entry_address ("Entry Address = ", final); | |
c906108c | 3289 | pmon_check_ack ("termination"); |
688991e6 AC |
3290 | if (!pmon_check_total (bintotal)) |
3291 | return; | |
3292 | break; | |
c906108c | 3293 | } |
c906108c SS |
3294 | |
3295 | if (tftp_in_use) | |
3296 | remove (tftp_localname); /* Remove temporary file */ | |
3297 | } | |
3298 | ||
477c84a7 KB |
3299 | /* Write the buffer specified by BUFFER of length LENGTH to either |
3300 | the board or the temporary file that'll eventually be transferred | |
3301 | to the board. */ | |
3302 | ||
c906108c | 3303 | static void |
fba45db2 | 3304 | pmon_download (char *buffer, int length) |
c906108c SS |
3305 | { |
3306 | if (tftp_in_use) | |
3307 | fwrite (buffer, 1, length, tftp_file); | |
3308 | else | |
2cd58942 | 3309 | serial_write (udp_in_use ? udp_desc : mips_desc, buffer, length); |
c906108c SS |
3310 | } |
3311 | ||
477c84a7 KB |
3312 | /* Open object or executable file, FILE, and send it to the board |
3313 | using the FastLoad format. */ | |
3314 | ||
c906108c | 3315 | static void |
fba45db2 | 3316 | pmon_load_fast (char *file) |
c906108c SS |
3317 | { |
3318 | bfd *abfd; | |
3319 | asection *s; | |
3320 | unsigned char *binbuf; | |
3321 | char *buffer; | |
3322 | int reclen; | |
3323 | unsigned int csum = 0; | |
3324 | int hashmark = !tftp_in_use; | |
3325 | int bintotal = 0; | |
3326 | int final = 0; | |
3327 | int finished = 0; | |
3328 | ||
c5aa993b JM |
3329 | buffer = (char *) xmalloc (MAXRECSIZE + 1); |
3330 | binbuf = (unsigned char *) xmalloc (BINCHUNK); | |
c906108c | 3331 | |
c5aa993b | 3332 | abfd = bfd_openr (file, 0); |
c906108c | 3333 | if (!abfd) |
c5aa993b JM |
3334 | { |
3335 | printf_filtered ("Unable to open file %s\n", file); | |
3336 | return; | |
3337 | } | |
c906108c | 3338 | |
c5aa993b JM |
3339 | if (bfd_check_format (abfd, bfd_object) == 0) |
3340 | { | |
3341 | printf_filtered ("File is not an object file\n"); | |
3342 | return; | |
3343 | } | |
c906108c SS |
3344 | |
3345 | /* Setup the required download state: */ | |
3346 | mips_send_command ("set dlproto etxack\r", -1); | |
3347 | mips_send_command ("set dlecho off\r", -1); | |
3348 | /* NOTE: We get a "cannot set variable" message if the variable is | |
3349 | already defined to have the argument we give. The code doesn't | |
3350 | care, since it just scans to the next prompt anyway. */ | |
3351 | /* Start the download: */ | |
c5aa993b JM |
3352 | pmon_start_download (); |
3353 | ||
c906108c | 3354 | /* Zero the checksum */ |
c5aa993b JM |
3355 | sprintf (buffer, "/Kxx\n"); |
3356 | reclen = strlen (buffer); | |
c906108c | 3357 | pmon_download (buffer, reclen); |
c5aa993b | 3358 | finished = pmon_check_ack ("/Kxx"); |
c906108c SS |
3359 | |
3360 | for (s = abfd->sections; s && !finished; s = s->next) | |
c5aa993b JM |
3361 | if (s->flags & SEC_LOAD) /* only deal with loadable sections */ |
3362 | { | |
2c500098 AM |
3363 | bintotal += bfd_get_section_size (s); |
3364 | final = (s->vma + bfd_get_section_size (s)); | |
c5aa993b JM |
3365 | |
3366 | printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, (unsigned int) s->vma, | |
2c500098 | 3367 | (unsigned int) (s->vma + bfd_get_section_size (s))); |
c5aa993b JM |
3368 | gdb_flush (gdb_stdout); |
3369 | ||
3370 | /* Output the starting address */ | |
3371 | sprintf (buffer, "/A"); | |
3372 | reclen = pmon_makeb64 (s->vma, &buffer[2], 36, &csum); | |
3373 | buffer[2 + reclen] = '\n'; | |
3374 | buffer[3 + reclen] = '\0'; | |
3375 | reclen += 3; /* for the initial escape code and carriage return */ | |
3376 | pmon_download (buffer, reclen); | |
3377 | finished = pmon_check_ack ("/A"); | |
3378 | ||
3379 | if (!finished) | |
3380 | { | |
3381 | unsigned int binamount; | |
3382 | unsigned int zerofill = 0; | |
3383 | char *bp = buffer; | |
3384 | unsigned int i; | |
3385 | ||
3386 | reclen = 0; | |
3387 | ||
2c500098 AM |
3388 | for (i = 0; |
3389 | i < bfd_get_section_size (s) && !finished; | |
3390 | i += binamount) | |
c5aa993b JM |
3391 | { |
3392 | int binptr = 0; | |
3393 | ||
2c500098 | 3394 | binamount = min (BINCHUNK, bfd_get_section_size (s) - i); |
c5aa993b JM |
3395 | |
3396 | bfd_get_section_contents (abfd, s, binbuf, i, binamount); | |
3397 | ||
3398 | /* This keeps a rolling checksum, until we decide to output | |
3399 | the line: */ | |
3400 | for (; ((binamount - binptr) > 0);) | |
3401 | { | |
1fa79fac MS |
3402 | pmon_make_fastrec (&bp, binbuf, &binptr, binamount, |
3403 | &reclen, &csum, &zerofill); | |
c5aa993b JM |
3404 | if (reclen >= (MAXRECSIZE - CHECKSIZE)) |
3405 | { | |
3406 | reclen = pmon_checkset (reclen, &bp, &csum); | |
3407 | pmon_download (buffer, reclen); | |
3408 | finished = pmon_check_ack ("data record"); | |
3409 | if (finished) | |
3410 | { | |
3411 | zerofill = 0; /* do not transmit pending zerofills */ | |
3412 | break; | |
3413 | } | |
3414 | ||
9a4105ab AC |
3415 | if (deprecated_ui_load_progress_hook) |
3416 | deprecated_ui_load_progress_hook (s->name, i); | |
7829b833 | 3417 | |
c5aa993b JM |
3418 | if (hashmark) |
3419 | { | |
3420 | putchar_unfiltered ('#'); | |
3421 | gdb_flush (gdb_stdout); | |
3422 | } | |
3423 | ||
3424 | bp = buffer; | |
3425 | reclen = 0; /* buffer processed */ | |
3426 | } | |
3427 | } | |
3428 | } | |
3429 | ||
3430 | /* Ensure no out-standing zerofill requests: */ | |
3431 | if (zerofill != 0) | |
3432 | reclen = pmon_zeroset (reclen, &bp, &zerofill, &csum); | |
3433 | ||
3434 | /* and then flush the line: */ | |
3435 | if (reclen > 0) | |
3436 | { | |
3437 | reclen = pmon_checkset (reclen, &bp, &csum); | |
3438 | /* Currently pmon_checkset outputs the line terminator by | |
3439 | default, so we write out the buffer so far: */ | |
3440 | pmon_download (buffer, reclen); | |
3441 | finished = pmon_check_ack ("record remnant"); | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | putchar_unfiltered ('\n'); | |
3446 | } | |
c906108c SS |
3447 | |
3448 | /* Terminate the transfer. We know that we have an empty output | |
3449 | buffer at this point. */ | |
c5aa993b | 3450 | sprintf (buffer, "/E/E\n"); /* include dummy padding characters */ |
c906108c SS |
3451 | reclen = strlen (buffer); |
3452 | pmon_download (buffer, reclen); | |
3453 | ||
c5aa993b JM |
3454 | if (finished) |
3455 | { /* Ignore the termination message: */ | |
2cd58942 | 3456 | serial_flush_input (udp_in_use ? udp_desc : mips_desc); |
c5aa993b JM |
3457 | } |
3458 | else | |
3459 | { /* Deal with termination message: */ | |
3460 | pmon_end_download (final, bintotal); | |
3461 | } | |
c906108c SS |
3462 | |
3463 | return; | |
3464 | } | |
3465 | ||
3466 | /* mips_load -- download a file. */ | |
3467 | ||
3468 | static void | |
fba45db2 | 3469 | mips_load (char *file, int from_tty) |
c906108c | 3470 | { |
fb14de7b UW |
3471 | struct regcache *regcache; |
3472 | ||
c906108c SS |
3473 | /* Get the board out of remote debugging mode. */ |
3474 | if (mips_exit_debug ()) | |
3475 | error ("mips_load: Couldn't get into monitor mode."); | |
3476 | ||
3477 | if (mips_monitor != MON_IDT) | |
c5aa993b | 3478 | pmon_load_fast (file); |
c906108c | 3479 | else |
c5aa993b | 3480 | mips_load_srec (file); |
c906108c SS |
3481 | |
3482 | mips_initialize (); | |
3483 | ||
3484 | /* Finally, make the PC point at the start address */ | |
fb14de7b | 3485 | regcache = get_current_regcache (); |
c906108c SS |
3486 | if (mips_monitor != MON_IDT) |
3487 | { | |
3488 | /* Work around problem where PMON monitor updates the PC after a load | |
c5aa993b | 3489 | to a different value than GDB thinks it has. The following ensures |
fb14de7b | 3490 | that the regcache_write_pc() WILL update the PC value: */ |
a624e111 | 3491 | regcache_invalidate (regcache, |
97b0f3e2 | 3492 | mips_regnum (get_regcache_arch (regcache))->pc); |
c906108c SS |
3493 | } |
3494 | if (exec_bfd) | |
fb14de7b | 3495 | regcache_write_pc (regcache, bfd_get_start_address (exec_bfd)); |
8eeafb51 | 3496 | } |
c906108c | 3497 | |
8eeafb51 KB |
3498 | /* Check to see if a thread is still alive. */ |
3499 | ||
3500 | static int | |
3501 | mips_thread_alive (struct target_ops *ops, ptid_t ptid) | |
3502 | { | |
3503 | if (ptid_equal (ptid, remote_mips_ptid)) | |
3504 | /* The monitor's task is always alive. */ | |
3505 | return 1; | |
c906108c | 3506 | |
8eeafb51 | 3507 | return 0; |
c906108c SS |
3508 | } |
3509 | ||
8eeafb51 KB |
3510 | /* Convert a thread ID to a string. Returns the string in a static |
3511 | buffer. */ | |
3512 | ||
3513 | static char * | |
3514 | mips_pid_to_str (struct target_ops *ops, ptid_t ptid) | |
3515 | { | |
3516 | static char buf[64]; | |
3517 | ||
3518 | if (ptid_equal (ptid, remote_mips_ptid)) | |
3519 | { | |
3520 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
3521 | return buf; | |
3522 | } | |
3523 | ||
3524 | return normal_pid_to_str (ptid); | |
3525 | } | |
c906108c SS |
3526 | |
3527 | /* Pass the command argument as a packet to PMON verbatim. */ | |
3528 | ||
3529 | static void | |
fba45db2 | 3530 | pmon_command (char *args, int from_tty) |
c906108c SS |
3531 | { |
3532 | char buf[DATA_MAXLEN + 1]; | |
3533 | int rlen; | |
3534 | ||
3535 | sprintf (buf, "0x0 %s", args); | |
3536 | mips_send_packet (buf, 1); | |
3537 | printf_filtered ("Send packet: %s\n", buf); | |
3538 | ||
3539 | rlen = mips_receive_packet (buf, 1, mips_receive_wait); | |
3540 | buf[rlen] = '\0'; | |
3541 | printf_filtered ("Received packet: %s\n", buf); | |
3542 | } | |
3543 | \f | |
a78f21af AC |
3544 | extern initialize_file_ftype _initialize_remote_mips; /* -Wmissing-prototypes */ |
3545 | ||
477c84a7 KB |
3546 | /* Initialize mips_ops, lsi_ops, ddb_ops, pmon_ops, and rockhopper_ops. |
3547 | Create target specific commands and perform other initializations | |
3548 | specific to this file. */ | |
3549 | ||
c906108c | 3550 | void |
fba45db2 | 3551 | _initialize_remote_mips (void) |
c906108c SS |
3552 | { |
3553 | /* Initialize the fields in mips_ops that are common to all four targets. */ | |
3554 | mips_ops.to_longname = "Remote MIPS debugging over serial line"; | |
3555 | mips_ops.to_close = mips_close; | |
3556 | mips_ops.to_detach = mips_detach; | |
3557 | mips_ops.to_resume = mips_resume; | |
3558 | mips_ops.to_fetch_registers = mips_fetch_registers; | |
3559 | mips_ops.to_store_registers = mips_store_registers; | |
3560 | mips_ops.to_prepare_to_store = mips_prepare_to_store; | |
c8e73a31 | 3561 | mips_ops.deprecated_xfer_memory = mips_xfer_memory; |
c906108c SS |
3562 | mips_ops.to_files_info = mips_files_info; |
3563 | mips_ops.to_insert_breakpoint = mips_insert_breakpoint; | |
3564 | mips_ops.to_remove_breakpoint = mips_remove_breakpoint; | |
546143b6 AC |
3565 | mips_ops.to_insert_watchpoint = mips_insert_watchpoint; |
3566 | mips_ops.to_remove_watchpoint = mips_remove_watchpoint; | |
3567 | mips_ops.to_stopped_by_watchpoint = mips_stopped_by_watchpoint; | |
3568 | mips_ops.to_can_use_hw_breakpoint = mips_can_use_watchpoint; | |
c906108c SS |
3569 | mips_ops.to_kill = mips_kill; |
3570 | mips_ops.to_load = mips_load; | |
3571 | mips_ops.to_create_inferior = mips_create_inferior; | |
3572 | mips_ops.to_mourn_inferior = mips_mourn_inferior; | |
8eeafb51 KB |
3573 | mips_ops.to_thread_alive = mips_thread_alive; |
3574 | mips_ops.to_pid_to_str = mips_pid_to_str; | |
49d03eab | 3575 | mips_ops.to_log_command = serial_log_command; |
c906108c | 3576 | mips_ops.to_stratum = process_stratum; |
c35b1492 PA |
3577 | mips_ops.to_has_all_memory = default_child_has_all_memory; |
3578 | mips_ops.to_has_memory = default_child_has_memory; | |
3579 | mips_ops.to_has_stack = default_child_has_stack; | |
3580 | mips_ops.to_has_registers = default_child_has_registers; | |
3581 | mips_ops.to_has_execution = default_child_has_execution; | |
c906108c SS |
3582 | mips_ops.to_magic = OPS_MAGIC; |
3583 | ||
3584 | /* Copy the common fields to all four target vectors. */ | |
bbd2783e | 3585 | rockhopper_ops = pmon_ops = ddb_ops = lsi_ops = mips_ops; |
c906108c SS |
3586 | |
3587 | /* Initialize target-specific fields in the target vectors. */ | |
3588 | mips_ops.to_shortname = "mips"; | |
3589 | mips_ops.to_doc = "\ | |
3590 | Debug a board using the MIPS remote debugging protocol over a serial line.\n\ | |
3591 | The argument is the device it is connected to or, if it contains a colon,\n\ | |
3592 | HOST:PORT to access a board over a network"; | |
3593 | mips_ops.to_open = mips_open; | |
3594 | mips_ops.to_wait = mips_wait; | |
3595 | ||
3596 | pmon_ops.to_shortname = "pmon"; | |
c5aa993b | 3597 | pmon_ops.to_doc = "\ |
c906108c SS |
3598 | Debug a board using the PMON MIPS remote debugging protocol over a serial\n\ |
3599 | line. The argument is the device it is connected to or, if it contains a\n\ | |
3600 | colon, HOST:PORT to access a board over a network"; | |
3601 | pmon_ops.to_open = pmon_open; | |
3602 | pmon_ops.to_wait = mips_wait; | |
3603 | ||
3604 | ddb_ops.to_shortname = "ddb"; | |
3605 | ddb_ops.to_doc = "\ | |
3606 | Debug a board using the PMON MIPS remote debugging protocol over a serial\n\ | |
3607 | line. The first argument is the device it is connected to or, if it contains\n\ | |
3608 | a colon, HOST:PORT to access a board over a network. The optional second\n\ | |
3609 | parameter is the temporary file in the form HOST:FILENAME to be used for\n\ | |
3610 | TFTP downloads to the board. The optional third parameter is the local name\n\ | |
3611 | of the TFTP temporary file, if it differs from the filename seen by the board."; | |
3612 | ddb_ops.to_open = ddb_open; | |
3613 | ddb_ops.to_wait = mips_wait; | |
3614 | ||
bbd2783e KB |
3615 | rockhopper_ops.to_shortname = "rockhopper"; |
3616 | rockhopper_ops.to_doc = ddb_ops.to_doc; | |
3617 | rockhopper_ops.to_open = rockhopper_open; | |
3618 | rockhopper_ops.to_wait = mips_wait; | |
3619 | ||
c906108c SS |
3620 | lsi_ops.to_shortname = "lsi"; |
3621 | lsi_ops.to_doc = pmon_ops.to_doc; | |
3622 | lsi_ops.to_open = lsi_open; | |
3623 | lsi_ops.to_wait = mips_wait; | |
3624 | ||
3625 | /* Add the targets. */ | |
3626 | add_target (&mips_ops); | |
3627 | add_target (&pmon_ops); | |
3628 | add_target (&ddb_ops); | |
3629 | add_target (&lsi_ops); | |
bbd2783e | 3630 | add_target (&rockhopper_ops); |
c906108c | 3631 | |
85c07804 AC |
3632 | add_setshow_zinteger_cmd ("timeout", no_class, &mips_receive_wait, _("\ |
3633 | Set timeout in seconds for remote MIPS serial I/O."), _("\ | |
3634 | Show timeout in seconds for remote MIPS serial I/O."), NULL, | |
3635 | NULL, | |
3636 | NULL, /* FIXME: i18n: */ | |
3637 | &setlist, &showlist); | |
3638 | ||
3639 | add_setshow_zinteger_cmd ("retransmit-timeout", no_class, | |
3640 | &mips_retransmit_wait, _("\ | |
3641 | Set retransmit timeout in seconds for remote MIPS serial I/O."), _("\ | |
3642 | Show retransmit timeout in seconds for remote MIPS serial I/O."), _("\ | |
c906108c | 3643 | This is the number of seconds to wait for an acknowledgement to a packet\n\ |
85c07804 AC |
3644 | before resending the packet."), |
3645 | NULL, | |
3646 | NULL, /* FIXME: i18n: */ | |
3647 | &setlist, &showlist); | |
3648 | ||
3649 | add_setshow_zinteger_cmd ("syn-garbage-limit", no_class, | |
3650 | &mips_syn_garbage, _("\ | |
3651 | Set the maximum number of characters to ignore when scanning for a SYN."), _("\ | |
3652 | Show the maximum number of characters to ignore when scanning for a SYN."), _("\ | |
c906108c | 3653 | This is the maximum number of characters GDB will ignore when trying to\n\ |
cb1a6d5f AC |
3654 | synchronize with the remote system. A value of -1 means that there is no\n\ |
3655 | limit. (Note that these characters are printed out even though they are\n\ | |
85c07804 AC |
3656 | ignored.)"), |
3657 | NULL, | |
3658 | NULL, /* FIXME: i18n: */ | |
3659 | &setlist, &showlist); | |
c906108c | 3660 | |
4d28ad1e AC |
3661 | add_setshow_string_cmd ("monitor-prompt", class_obscure, |
3662 | &mips_monitor_prompt, _("\ | |
3663 | Set the prompt that GDB expects from the monitor."), _("\ | |
3664 | Show the prompt that GDB expects from the monitor."), NULL, | |
3665 | NULL, | |
3666 | NULL, /* FIXME: i18n: */ | |
3667 | &setlist, &showlist); | |
c906108c | 3668 | |
85c07804 AC |
3669 | add_setshow_zinteger_cmd ("monitor-warnings", class_obscure, |
3670 | &monitor_warnings, _("\ | |
3671 | Set printing of monitor warnings."), _("\ | |
3672 | Show printing of monitor warnings."), _("\ | |
3673 | When enabled, monitor warnings about hardware breakpoints will be displayed."), | |
3674 | NULL, | |
3675 | NULL, /* FIXME: i18n: */ | |
3676 | &setlist, &showlist); | |
c906108c | 3677 | |
24ec834b | 3678 | add_com ("pmon", class_obscure, pmon_command, |
1bedd215 | 3679 | _("Send a packet to PMON (must be in debug mode).")); |
4014092b | 3680 | |
5bf193a2 AC |
3681 | add_setshow_boolean_cmd ("mask-address", no_class, &mask_address_p, _("\ |
3682 | Set zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\ | |
3683 | Show zeroing of upper 32 bits of 64-bit addresses when talking to PMON targets."), _("\ | |
3684 | Use \"on\" to enable the masking and \"off\" to disable it."), | |
3685 | NULL, | |
3686 | NULL, /* FIXME: i18n: */ | |
3687 | &setlist, &showlist); | |
8eeafb51 | 3688 | remote_mips_ptid = ptid_build (42000, 0, 42000); |
c906108c | 3689 | } |