|
1 /* |
|
2 |
|
3 Copyright (C) 2000,2004 Silicon Graphics, Inc. All Rights Reserved. |
|
4 |
|
5 This program is free software; you can redistribute it and/or modify it |
|
6 under the terms of version 2.1 of the GNU Lesser General Public License |
|
7 as published by the Free Software Foundation. |
|
8 |
|
9 This program is distributed in the hope that it would be useful, but |
|
10 WITHOUT ANY WARRANTY; without even the implied warranty of |
|
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
|
12 |
|
13 Further, this software is distributed without any warranty that it is |
|
14 free of the rightful claim of any third person regarding infringement |
|
15 or the like. Any license provided herein, whether implied or |
|
16 otherwise, applies only to this software file. Patent licenses, if |
|
17 any, provided herein do not apply to combinations of this program with |
|
18 other software, or any other product whatsoever. |
|
19 |
|
20 You should have received a copy of the GNU Lesser General Public |
|
21 License along with this program; if not, write the Free Software |
|
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, |
|
23 USA. |
|
24 |
|
25 Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane, |
|
26 Mountain View, CA 94043, or: |
|
27 |
|
28 http://www.sgi.com |
|
29 |
|
30 For further information regarding this notice, see: |
|
31 |
|
32 http://oss.sgi.com/projects/GenInfo/NoticeExplan |
|
33 |
|
34 */ |
|
35 |
|
36 |
|
37 |
|
38 #include "config.h" |
|
39 #include "libdwarfdefs.h" |
|
40 #include <stdio.h> |
|
41 #include <string.h> |
|
42 #include "pro_incl.h" |
|
43 #include "pro_section.h" |
|
44 #include "pro_macinfo.h" |
|
45 |
|
46 /* |
|
47 I don't much like the error strings this generates, since |
|
48 like the rest of libdwarf they are simple strings with |
|
49 no useful numbers in them. But that's not something I can |
|
50 fix without more work than I have time for |
|
51 right now. davea Nov 94. |
|
52 */ |
|
53 |
|
54 /* these are gross overestimates of the number of |
|
55 ** bytes needed to store a number in LEB form. |
|
56 ** Just estimates, and since blocks are reasonable size, |
|
57 ** the end-block waste is small. |
|
58 ** Of course the waste is NOT present on disk. |
|
59 */ |
|
60 |
|
61 #define COMMAND_LEN ENCODE_SPACE_NEEDED |
|
62 #define LINE_LEN ENCODE_SPACE_NEEDED |
|
63 #define BASE_MACINFO_MALLOC_LEN 2048 |
|
64 |
|
65 static int |
|
66 libdwarf_compose_begin(Dwarf_P_Debug dbg, int code, |
|
67 size_t maxlen, int *compose_error_type) |
|
68 { |
|
69 unsigned char *nextchar; |
|
70 struct dw_macinfo_block_s *curblk = dbg->de_current_macinfo; |
|
71 |
|
72 if (curblk == 0) { |
|
73 struct dw_macinfo_block_s *newb; |
|
74 size_t len; |
|
75 |
|
76 /* initial allocation */ |
|
77 size_t blen = BASE_MACINFO_MALLOC_LEN; |
|
78 |
|
79 if (blen < maxlen) { |
|
80 blen = 2 * maxlen; |
|
81 } |
|
82 len = sizeof(struct dw_macinfo_block_s) + blen; |
|
83 newb = |
|
84 (struct dw_macinfo_block_s *) _dwarf_p_get_alloc(dbg, len); |
|
85 if (!newb) { |
|
86 *compose_error_type = DW_DLE_MACINFO_MALLOC_FAIL; |
|
87 return DW_DLV_ERROR; |
|
88 } |
|
89 newb->mb_data = |
|
90 (char *) newb + sizeof(struct dw_macinfo_block_s); |
|
91 newb->mb_avail_len = blen; |
|
92 newb->mb_used_len = 0; |
|
93 newb->mb_macinfo_data_space_len = blen; |
|
94 dbg->de_first_macinfo = newb; |
|
95 dbg->de_current_macinfo = newb; |
|
96 curblk = newb; |
|
97 } else if (curblk->mb_avail_len < maxlen) { |
|
98 struct dw_macinfo_block_s *newb; |
|
99 size_t len; |
|
100 |
|
101 /* no space left in block: allocate a new block */ |
|
102 size_t blen = |
|
103 dbg->de_current_macinfo->mb_macinfo_data_space_len * 2; |
|
104 if (blen < maxlen) { |
|
105 blen = 2 * maxlen; |
|
106 } |
|
107 len = sizeof(struct dw_macinfo_block_s) + blen; |
|
108 newb = |
|
109 (struct dw_macinfo_block_s *) _dwarf_p_get_alloc(dbg, len); |
|
110 if (!newb) { |
|
111 *compose_error_type = DW_DLE_MACINFO_MALLOC_FAIL; |
|
112 return DW_DLV_ERROR; |
|
113 } |
|
114 newb->mb_data = |
|
115 (char *) newb + sizeof(struct dw_macinfo_block_s); |
|
116 newb->mb_avail_len = blen; |
|
117 newb->mb_used_len = 0; |
|
118 newb->mb_macinfo_data_space_len = blen; |
|
119 dbg->de_first_macinfo->mb_next = newb; |
|
120 dbg->de_current_macinfo = newb; |
|
121 curblk = newb; |
|
122 } |
|
123 /* now curblk has enough room */ |
|
124 dbg->de_compose_avail = curblk->mb_avail_len; |
|
125 dbg->de_compose_used_len = curblk->mb_used_len; |
|
126 nextchar = |
|
127 (unsigned char *) (curblk->mb_data + dbg->de_compose_used_len); |
|
128 *nextchar = code; |
|
129 dbg->de_compose_avail--; |
|
130 ++dbg->de_compose_used_len; |
|
131 return DW_DLV_OK; |
|
132 } |
|
133 |
|
134 |
|
135 |
|
136 static void |
|
137 libdwarf_compose_add_string(Dwarf_P_Debug dbg, char *string, size_t len) |
|
138 { |
|
139 struct dw_macinfo_block_s *curblk = dbg->de_current_macinfo; |
|
140 unsigned char *nextchar; |
|
141 |
|
142 nextchar = |
|
143 (unsigned char *) (curblk->mb_data + dbg->de_compose_used_len); |
|
144 |
|
145 len += 1; /* count the null terminator */ |
|
146 |
|
147 memcpy(nextchar, string, len); |
|
148 dbg->de_compose_avail -= len; |
|
149 dbg->de_compose_used_len += len; |
|
150 return; |
|
151 |
|
152 } |
|
153 static int |
|
154 libdwarf_compose_add_line(Dwarf_P_Debug dbg, |
|
155 Dwarf_Unsigned line, int *compose_error_type) |
|
156 { |
|
157 struct dw_macinfo_block_s *curblk = dbg->de_current_macinfo; |
|
158 unsigned char *nextchar; |
|
159 int res; |
|
160 int nbytes; |
|
161 |
|
162 nextchar = |
|
163 (unsigned char *) (curblk->mb_data + dbg->de_compose_used_len); |
|
164 |
|
165 /* Put the created leb number directly into the macro buffer If |
|
166 dbg->de_compose_avail is > INT_MAX this will not work as the |
|
167 'int' will look negative to _dwarf_pro_encode_leb128_nm! */ |
|
168 |
|
169 res = _dwarf_pro_encode_leb128_nm(line, &nbytes, |
|
170 (char *) nextchar, |
|
171 (int) dbg->de_compose_avail); |
|
172 if (res != DW_DLV_OK) { |
|
173 *compose_error_type = DW_DLE_MACINFO_INTERNAL_ERROR_SPACE; |
|
174 return DW_DLV_ERROR; |
|
175 } |
|
176 |
|
177 dbg->de_compose_avail -= nbytes; |
|
178 dbg->de_compose_used_len += nbytes; |
|
179 return DW_DLV_OK; |
|
180 } |
|
181 |
|
182 /* |
|
183 This function actually 'commits' the space used by the |
|
184 preceeding calls. |
|
185 */ |
|
186 static int |
|
187 libdwarf_compose_complete(Dwarf_P_Debug dbg, int *compose_error_type) |
|
188 { |
|
189 struct dw_macinfo_block_s *curblk = dbg->de_current_macinfo; |
|
190 |
|
191 if (dbg->de_compose_used_len > curblk->mb_macinfo_data_space_len) { |
|
192 *compose_error_type = DW_DLE_MACINFO_INTERNAL_ERROR_SPACE; |
|
193 return DW_DLV_ERROR; |
|
194 } |
|
195 curblk->mb_avail_len = dbg->de_compose_avail; |
|
196 curblk->mb_used_len = dbg->de_compose_used_len; |
|
197 return DW_DLV_OK; |
|
198 } |
|
199 |
|
200 |
|
201 |
|
202 int |
|
203 dwarf_def_macro(Dwarf_P_Debug dbg, |
|
204 Dwarf_Unsigned line, |
|
205 char *macname, char *macvalue, Dwarf_Error * error) |
|
206 { |
|
207 size_t len; |
|
208 size_t len2; |
|
209 size_t length_est; |
|
210 int res; |
|
211 int compose_error_type; |
|
212 |
|
213 if (dbg == NULL) { |
|
214 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
|
215 return (DW_DLV_ERROR); |
|
216 } |
|
217 if (macname == 0) { |
|
218 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_NULL); |
|
219 return (DW_DLV_ERROR); |
|
220 } |
|
221 len = strlen(macname) + 1; |
|
222 if (len == 0) { |
|
223 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_EMPTY); |
|
224 return (DW_DLV_ERROR); |
|
225 } |
|
226 if (macvalue) { |
|
227 len2 = strlen(macvalue) + 1; |
|
228 } else { |
|
229 len2 = 0; |
|
230 } |
|
231 length_est = COMMAND_LEN + LINE_LEN + len + len2 + 1; /* 1 |
|
232 for |
|
233 space |
|
234 character |
|
235 we |
|
236 add */ |
|
237 res = libdwarf_compose_begin(dbg, DW_MACINFO_define, length_est, |
|
238 &compose_error_type); |
|
239 if (res != DW_DLV_OK) { |
|
240 _dwarf_p_error(NULL, error, compose_error_type); |
|
241 return (DW_DLV_ERROR); |
|
242 } |
|
243 res = libdwarf_compose_add_line(dbg, line, &compose_error_type); |
|
244 if (res != DW_DLV_OK) { |
|
245 _dwarf_p_error(NULL, error, compose_error_type); |
|
246 return (DW_DLV_ERROR); |
|
247 } |
|
248 libdwarf_compose_add_string(dbg, macname, len); |
|
249 libdwarf_compose_add_string(dbg, " ", 1); |
|
250 if (macvalue) { |
|
251 libdwarf_compose_add_string(dbg, " ", 1); |
|
252 libdwarf_compose_add_string(dbg, macvalue, len2); |
|
253 } |
|
254 res = libdwarf_compose_complete(dbg, &compose_error_type); |
|
255 if (res != DW_DLV_OK) { |
|
256 _dwarf_p_error(NULL, error, compose_error_type); |
|
257 return (DW_DLV_ERROR); |
|
258 } |
|
259 return DW_DLV_OK; |
|
260 } |
|
261 |
|
262 int |
|
263 dwarf_undef_macro(Dwarf_P_Debug dbg, |
|
264 Dwarf_Unsigned line, |
|
265 char *macname, Dwarf_Error * error) |
|
266 { |
|
267 |
|
268 size_t len; |
|
269 size_t length_est; |
|
270 int res; |
|
271 int compose_error_type; |
|
272 |
|
273 if (dbg == NULL) { |
|
274 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
|
275 return (DW_DLV_ERROR); |
|
276 } |
|
277 if (macname == 0) { |
|
278 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_NULL); |
|
279 return (DW_DLV_ERROR); |
|
280 } |
|
281 len = strlen(macname) + 1; |
|
282 if (len == 0) { |
|
283 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_EMPTY); |
|
284 return (DW_DLV_ERROR); |
|
285 } |
|
286 length_est = COMMAND_LEN + LINE_LEN + len; |
|
287 res = libdwarf_compose_begin(dbg, DW_MACINFO_undef, length_est, |
|
288 &compose_error_type); |
|
289 if (res != DW_DLV_OK) { |
|
290 _dwarf_p_error(NULL, error, compose_error_type); |
|
291 return (DW_DLV_ERROR); |
|
292 } |
|
293 res = libdwarf_compose_add_line(dbg, line, &compose_error_type); |
|
294 if (res != DW_DLV_OK) { |
|
295 _dwarf_p_error(NULL, error, compose_error_type); |
|
296 return (DW_DLV_ERROR); |
|
297 } |
|
298 libdwarf_compose_add_string(dbg, macname, len); |
|
299 res = libdwarf_compose_complete(dbg, &compose_error_type); |
|
300 if (res != DW_DLV_OK) { |
|
301 _dwarf_p_error(NULL, error, compose_error_type); |
|
302 return (DW_DLV_ERROR); |
|
303 } |
|
304 return DW_DLV_OK; |
|
305 } |
|
306 |
|
307 int |
|
308 dwarf_start_macro_file(Dwarf_P_Debug dbg, |
|
309 Dwarf_Unsigned fileindex, |
|
310 Dwarf_Unsigned linenumber, Dwarf_Error * error) |
|
311 { |
|
312 size_t length_est; |
|
313 int res; |
|
314 int compose_error_type; |
|
315 |
|
316 if (dbg == NULL) { |
|
317 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
|
318 return (DW_DLV_ERROR); |
|
319 } |
|
320 length_est = COMMAND_LEN + LINE_LEN + LINE_LEN; |
|
321 res = libdwarf_compose_begin(dbg, DW_MACINFO_start_file, length_est, |
|
322 &compose_error_type); |
|
323 if (res != DW_DLV_OK) { |
|
324 _dwarf_p_error(NULL, error, compose_error_type); |
|
325 return (DW_DLV_ERROR); |
|
326 } |
|
327 res = libdwarf_compose_add_line(dbg, fileindex, |
|
328 &compose_error_type); |
|
329 if (res != DW_DLV_OK) { |
|
330 _dwarf_p_error(NULL, error, compose_error_type); |
|
331 return (DW_DLV_ERROR); |
|
332 } |
|
333 res = libdwarf_compose_add_line(dbg, linenumber, |
|
334 &compose_error_type); |
|
335 if (res != DW_DLV_OK) { |
|
336 _dwarf_p_error(NULL, error, compose_error_type); |
|
337 return (DW_DLV_ERROR); |
|
338 } |
|
339 return DW_DLV_OK; |
|
340 } |
|
341 |
|
342 int |
|
343 dwarf_end_macro_file(Dwarf_P_Debug dbg, Dwarf_Error * error) |
|
344 { |
|
345 size_t length_est; |
|
346 int res; |
|
347 int compose_error_type; |
|
348 |
|
349 if (dbg == NULL) { |
|
350 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
|
351 return (DW_DLV_ERROR); |
|
352 } |
|
353 length_est = COMMAND_LEN; |
|
354 res = libdwarf_compose_begin(dbg, DW_MACINFO_end_file, length_est, |
|
355 &compose_error_type); |
|
356 if (res != DW_DLV_OK) { |
|
357 _dwarf_p_error(NULL, error, compose_error_type); |
|
358 return (DW_DLV_ERROR); |
|
359 } |
|
360 res = libdwarf_compose_complete(dbg, &compose_error_type); |
|
361 if (res != DW_DLV_OK) { |
|
362 _dwarf_p_error(NULL, error, compose_error_type); |
|
363 return (DW_DLV_ERROR); |
|
364 } |
|
365 return DW_DLV_OK; |
|
366 } |
|
367 |
|
368 int |
|
369 dwarf_vendor_ext(Dwarf_P_Debug dbg, |
|
370 Dwarf_Unsigned constant, |
|
371 char *string, Dwarf_Error * error) |
|
372 { |
|
373 size_t len; |
|
374 size_t length_est; |
|
375 int res; |
|
376 int compose_error_type; |
|
377 |
|
378 if (dbg == NULL) { |
|
379 _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL); |
|
380 return (DW_DLV_ERROR); |
|
381 } |
|
382 if (string == 0) { |
|
383 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_NULL); |
|
384 return (DW_DLV_ERROR); |
|
385 } |
|
386 len = strlen(string) + 1; |
|
387 if (len == 0) { |
|
388 _dwarf_p_error(NULL, error, DW_DLE_MACINFO_STRING_EMPTY); |
|
389 return (DW_DLV_ERROR); |
|
390 } |
|
391 length_est = COMMAND_LEN + LINE_LEN + len; |
|
392 res = libdwarf_compose_begin(dbg, DW_MACINFO_vendor_ext, length_est, |
|
393 &compose_error_type); |
|
394 if (res != DW_DLV_OK) { |
|
395 _dwarf_p_error(NULL, error, compose_error_type); |
|
396 return (DW_DLV_ERROR); |
|
397 } |
|
398 res = libdwarf_compose_add_line(dbg, constant, &compose_error_type); |
|
399 if (res != DW_DLV_OK) { |
|
400 _dwarf_p_error(NULL, error, compose_error_type); |
|
401 return (DW_DLV_ERROR); |
|
402 } |
|
403 libdwarf_compose_add_string(dbg, string, len); |
|
404 libdwarf_compose_complete(dbg, &compose_error_type); |
|
405 if (res != DW_DLV_OK) { |
|
406 _dwarf_p_error(NULL, error, compose_error_type); |
|
407 return (DW_DLV_ERROR); |
|
408 } |
|
409 return DW_DLV_OK; |
|
410 } |
|
411 |
|
412 |
|
413 |
|
414 int |
|
415 _dwarf_pro_transform_macro_info_to_disk(Dwarf_P_Debug dbg, |
|
416 Dwarf_Error * error) |
|
417 { |
|
418 /* Total num of bytes in .debug_macinfo section. */ |
|
419 Dwarf_Unsigned mac_num_bytes; |
|
420 |
|
421 /* Points to first byte of .debug_macinfo buffer. */ |
|
422 Dwarf_Small *macinfo; |
|
423 |
|
424 /* Fills in the .debug_macinfo buffer. */ |
|
425 Dwarf_Small *macinfo_ptr; |
|
426 |
|
427 |
|
428 /* Used to scan the section data buffers. */ |
|
429 struct dw_macinfo_block_s *m_prev; |
|
430 struct dw_macinfo_block_s *m_sect; |
|
431 |
|
432 |
|
433 /* Get the size of the debug_macinfo data */ |
|
434 mac_num_bytes = 0; |
|
435 for (m_sect = dbg->de_first_macinfo; m_sect != NULL; |
|
436 m_sect = m_sect->mb_next) { |
|
437 mac_num_bytes += m_sect->mb_used_len; |
|
438 } |
|
439 /* Tthe final entry has a type code of 0 to indicate It is final |
|
440 for this CU Takes just 1 byte. */ |
|
441 mac_num_bytes += 1; |
|
442 |
|
443 GET_CHUNK(dbg, dbg->de_elf_sects[DEBUG_MACINFO], |
|
444 macinfo, (unsigned long) mac_num_bytes, error); |
|
445 if (macinfo == NULL) { |
|
446 _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL); |
|
447 return (0); |
|
448 } |
|
449 |
|
450 macinfo_ptr = macinfo; |
|
451 m_prev = 0; |
|
452 for (m_sect = dbg->de_first_macinfo; m_sect != NULL; |
|
453 m_sect = m_sect->mb_next) { |
|
454 memcpy(macinfo_ptr, m_sect->mb_data, m_sect->mb_used_len); |
|
455 macinfo_ptr += m_sect->mb_used_len; |
|
456 if (m_prev) { |
|
457 _dwarf_p_dealloc(dbg, (Dwarf_Small *) m_prev); |
|
458 m_prev = 0; |
|
459 } |
|
460 m_prev = m_sect; |
|
461 } |
|
462 *macinfo_ptr = 0; /* the type code of 0 as last entry */ |
|
463 if (m_prev) { |
|
464 _dwarf_p_dealloc(dbg, (Dwarf_Small *) m_prev); |
|
465 m_prev = 0; |
|
466 } |
|
467 |
|
468 dbg->de_first_macinfo = NULL; |
|
469 dbg->de_current_macinfo = NULL; |
|
470 |
|
471 return (int) dbg->de_n_debug_sect; |
|
472 } |