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c906108c SS |
1 | /* S-record download support for GDB, the GNU debugger. |
2 | Copyright 1995, 1996, 1997 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "serial.h" | |
22 | #include "srec.h" | |
23 | #include <time.h> | |
24 | ||
25 | int (*ui_load_progress_hook) PARAMS ((char *, unsigned long)); | |
26 | extern void report_transfer_performance PARAMS ((unsigned long, time_t, time_t)); | |
27 | ||
28 | extern int remote_debug; | |
29 | ||
30 | static int make_srec PARAMS ((char *srec, CORE_ADDR targ_addr, bfd *abfd, | |
31 | asection *sect, int sectoff, int *maxrecsize, | |
32 | int flags)); | |
33 | ||
34 | /* Download an executable by converting it to S records. DESC is a | |
35 | serial_t to send the data to. FILE is the name of the file to be | |
36 | loaded. LOAD_OFFSET is the offset into memory to load data into. | |
37 | It is usually specified by the user and is useful with the a.out | |
38 | file format. MAXRECSIZE is the length in chars of the largest | |
39 | S-record the host can accomodate. This is measured from the | |
40 | starting `S' to the last char of the checksum. FLAGS is various | |
41 | random flags, and HASHMARK is non-zero to cause a `#' to be | |
42 | printed out for each record loaded. WAITACK, if non-NULL, is a | |
43 | function that waits for an acknowledgement after each S-record, | |
44 | and returns non-zero if the ack is read correctly. */ | |
45 | ||
46 | void | |
47 | load_srec (desc, file, load_offset, maxrecsize, flags, hashmark, waitack) | |
48 | serial_t desc; | |
49 | const char *file; | |
50 | bfd_vma load_offset; | |
51 | int maxrecsize; | |
52 | int flags; | |
53 | int hashmark; | |
54 | int (*waitack) PARAMS ((void)); | |
55 | { | |
56 | bfd *abfd; | |
57 | asection *s; | |
58 | char *srec; | |
59 | int i; | |
60 | int reclen; | |
61 | time_t start_time, end_time; | |
62 | unsigned long data_count = 0; | |
63 | ||
64 | srec = (char *) alloca (maxrecsize + 1); | |
65 | ||
66 | abfd = bfd_openr (file, 0); | |
67 | if (!abfd) | |
68 | { | |
69 | printf_filtered ("Unable to open file %s\n", file); | |
70 | return; | |
71 | } | |
72 | ||
73 | if (bfd_check_format (abfd, bfd_object) == 0) | |
74 | { | |
75 | printf_filtered ("File is not an object file\n"); | |
76 | return; | |
77 | } | |
78 | ||
79 | start_time = time (NULL); | |
80 | ||
81 | /* Write a type 0 header record. no data for a type 0, and there | |
82 | is no data, so len is 0. */ | |
83 | ||
84 | reclen = maxrecsize; | |
85 | make_srec (srec, 0, NULL, (asection *)1, 0, &reclen, flags); | |
86 | if (remote_debug) | |
87 | { | |
88 | srec[reclen] = '\0'; | |
89 | puts_debug ("sent -->", srec, "<--"); | |
90 | } | |
91 | SERIAL_WRITE (desc, srec, reclen); | |
92 | ||
93 | for (s = abfd->sections; s; s = s->next) | |
94 | if (s->flags & SEC_LOAD) | |
95 | { | |
96 | int numbytes; | |
97 | bfd_vma addr = bfd_get_section_vma (abfd, s) + load_offset; | |
98 | bfd_size_type size = bfd_get_section_size_before_reloc (s); | |
99 | char * section_name = (char *)bfd_get_section_name (abfd, s); | |
100 | printf_filtered ("%s\t: 0x%08x .. 0x%08x ", | |
101 | section_name, (int) addr, (int) addr + size); | |
102 | gdb_flush (gdb_stdout); | |
103 | ||
104 | data_count += size; | |
105 | ||
106 | for (i = 0; i < size; i += numbytes) | |
107 | { | |
108 | reclen = maxrecsize; | |
109 | numbytes = make_srec (srec, (CORE_ADDR) (addr + i), abfd, s, | |
110 | i, &reclen, flags); | |
111 | ||
112 | if (remote_debug) | |
113 | { | |
114 | srec[reclen] = '\0'; | |
115 | puts_debug ("sent -->", srec, "<--"); | |
116 | } | |
117 | ||
118 | /* Repeatedly send the S-record until a good | |
119 | acknowledgement is sent back. */ | |
120 | do | |
121 | { | |
122 | SERIAL_WRITE (desc, srec, reclen); | |
123 | if (ui_load_progress_hook) | |
124 | if (ui_load_progress_hook (section_name, (unsigned long) i)) | |
125 | error ("Canceled the download"); | |
126 | } | |
127 | while (waitack != NULL && !waitack ()); | |
128 | ||
129 | if (hashmark) | |
130 | { | |
131 | putchar_unfiltered ('#'); | |
132 | gdb_flush (gdb_stdout); | |
133 | } | |
134 | } /* Per-packet (or S-record) loop */ | |
135 | ||
136 | if (ui_load_progress_hook) | |
137 | if (ui_load_progress_hook (section_name, (unsigned long) i)) | |
138 | error ("Canceled the download"); | |
139 | putchar_unfiltered ('\n'); | |
140 | } | |
141 | ||
142 | if (hashmark) | |
143 | putchar_unfiltered ('\n'); | |
144 | ||
145 | end_time = time (NULL); | |
146 | ||
147 | /* Write a terminator record. */ | |
148 | ||
149 | reclen = maxrecsize; | |
150 | make_srec (srec, abfd->start_address, NULL, NULL, 0, &reclen, flags); | |
151 | ||
152 | if (remote_debug) | |
153 | { | |
154 | srec[reclen] = '\0'; | |
155 | puts_debug ("sent -->", srec, "<--"); | |
156 | } | |
157 | ||
158 | SERIAL_WRITE (desc, srec, reclen); | |
159 | ||
160 | /* Some monitors need these to wake up properly. (Which ones? -sts) */ | |
161 | SERIAL_WRITE (desc, "\r\r", 2); | |
162 | if (remote_debug) | |
163 | puts_debug ("sent -->", "\r\r", "<---"); | |
164 | ||
165 | SERIAL_FLUSH_INPUT (desc); | |
166 | ||
167 | report_transfer_performance (data_count, start_time, end_time); | |
168 | } | |
169 | ||
170 | /* | |
171 | * make_srec -- make an srecord. This writes each line, one at a | |
172 | * time, each with it's own header and trailer line. | |
173 | * An srecord looks like this: | |
174 | * | |
175 | * byte count-+ address | |
176 | * start ---+ | | data +- checksum | |
177 | * | | | | | |
178 | * S01000006F6B692D746573742E73726563E4 | |
179 | * S315000448600000000000000000FC00005900000000E9 | |
180 | * S31A0004000023C1400037DE00F023604000377B009020825000348D | |
181 | * S30B0004485A0000000000004E | |
182 | * S70500040000F6 | |
183 | * | |
184 | * S<type><length><address><data><checksum> | |
185 | * | |
186 | * Where | |
187 | * - length | |
188 | * is the number of bytes following upto the checksum. Note that | |
189 | * this is not the number of chars following, since it takes two | |
190 | * chars to represent a byte. | |
191 | * - type | |
192 | * is one of: | |
193 | * 0) header record | |
194 | * 1) two byte address data record | |
195 | * 2) three byte address data record | |
196 | * 3) four byte address data record | |
197 | * 7) four byte address termination record | |
198 | * 8) three byte address termination record | |
199 | * 9) two byte address termination record | |
200 | * | |
201 | * - address | |
202 | * is the start address of the data following, or in the case of | |
203 | * a termination record, the start address of the image | |
204 | * - data | |
205 | * is the data. | |
206 | * - checksum | |
207 | * is the sum of all the raw byte data in the record, from the length | |
208 | * upwards, modulo 256 and subtracted from 255. | |
209 | * | |
210 | * This routine returns the length of the S-record. | |
211 | * | |
212 | */ | |
213 | ||
214 | static int | |
215 | make_srec (srec, targ_addr, abfd, sect, sectoff, maxrecsize, flags) | |
216 | char *srec; | |
217 | CORE_ADDR targ_addr; | |
218 | bfd *abfd; | |
219 | asection *sect; | |
220 | int sectoff; | |
221 | int *maxrecsize; | |
222 | int flags; | |
223 | { | |
224 | unsigned char checksum; | |
225 | int tmp; | |
226 | const static char hextab[] = "0123456789ABCDEF"; | |
227 | const static char data_code_table[] = "123"; | |
228 | const static char term_code_table[] = "987"; | |
229 | const static char header_code_table[] = "000"; | |
230 | const static char *formats[] = { "S%c%02X%04X", | |
231 | "S%c%02X%06X", | |
232 | "S%c%02X%08X" }; | |
233 | char const *code_table; | |
234 | int addr_size; | |
235 | int payload_size; | |
236 | char *binbuf; | |
237 | char *p; | |
238 | ||
239 | if (sect) | |
240 | { | |
241 | tmp = flags; /* Data or header record */ | |
242 | code_table = abfd ? data_code_table : header_code_table; | |
243 | binbuf = alloca (*maxrecsize/2); | |
244 | } | |
245 | else | |
246 | { | |
247 | tmp = flags >> SREC_TERM_SHIFT; /* Term record */ | |
248 | code_table = term_code_table; | |
249 | } | |
250 | ||
251 | if ((tmp & SREC_2_BYTE_ADDR) && (targ_addr <= 0xffff)) | |
252 | addr_size = 2; | |
253 | else if ((tmp & SREC_3_BYTE_ADDR) && (targ_addr <= 0xffffff)) | |
254 | addr_size = 3; | |
255 | else if (tmp & SREC_4_BYTE_ADDR) | |
256 | addr_size = 4; | |
257 | else | |
258 | fatal ("make_srec: Bad address (0x%x), or bad flags (0x%x).", | |
259 | targ_addr, flags); | |
260 | ||
261 | /* Now that we know the address size, we can figure out how much | |
262 | data this record can hold. */ | |
263 | ||
264 | if (sect && abfd) | |
265 | { | |
266 | payload_size = (*maxrecsize - (1 + 1 + 2 + addr_size * 2 + 2)) / 2; | |
267 | payload_size = min (payload_size, sect->_raw_size - sectoff); | |
268 | ||
269 | bfd_get_section_contents (abfd, sect, binbuf, sectoff, payload_size); | |
270 | } | |
271 | else | |
272 | payload_size = 0; /* Term or header packets have no payload */ | |
273 | ||
274 | /* Output the header. */ | |
275 | ||
276 | sprintf (srec, formats[addr_size - 2], code_table[addr_size - 2], | |
277 | addr_size + payload_size + 1, (int)targ_addr); | |
278 | ||
279 | /* Note that the checksum is calculated on the raw data, not the | |
280 | hexified data. It includes the length, address and the data | |
281 | portions of the packet. */ | |
282 | ||
283 | checksum = 0; | |
284 | ||
285 | checksum += (payload_size + addr_size + 1 /* Packet length */ | |
286 | + (targ_addr & 0xff) /* Address... */ | |
287 | + ((targ_addr >> 8) & 0xff) | |
288 | + ((targ_addr >> 16) & 0xff) | |
289 | + ((targ_addr >> 24) & 0xff)); | |
290 | ||
291 | p = srec + 1 + 1 + 2 + addr_size * 2; | |
292 | ||
293 | /* Build the Srecord. */ | |
294 | for (tmp = 0; tmp < payload_size; tmp++) | |
295 | { | |
296 | unsigned char k; | |
297 | ||
298 | k = binbuf[tmp]; | |
299 | *p++ = hextab [k >> 4]; | |
300 | *p++ = hextab [k & 0xf]; | |
301 | checksum += k; | |
302 | } | |
303 | ||
304 | checksum = ~checksum; | |
305 | ||
306 | *p++ = hextab[checksum >> 4]; | |
307 | *p++ = hextab[checksum & 0xf]; | |
308 | *p++ = '\r'; | |
309 | ||
310 | *maxrecsize = p - srec; | |
311 | return payload_size; | |
312 | } |