2 * debug-mono-ppdb.c: Support for the portable PDB symbol
7 * Mono Project (http://www.mono-project.com)
9 * Copyright 2015 Xamarin Inc (http://www.xamarin.com)
17 #include <mono/metadata/metadata.h>
18 #include <mono/metadata/tabledefs.h>
19 #include <mono/metadata/tokentype.h>
20 #include <mono/metadata/debug-helpers.h>
21 #include <mono/metadata/mono-debug.h>
22 #include <mono/metadata/debug-mono-symfile.h>
23 #include <mono/metadata/mono-debug-debugger.h>
24 #include <mono/metadata/mono-endian.h>
25 #include <mono/metadata/metadata-internals.h>
26 #include <mono/metadata/class-internals.h>
28 #include "debug-mono-ppdb.h"
30 struct _MonoPPDBFile {
32 GHashTable *doc_cache;
36 mono_ppdb_load_file (MonoImage *image)
38 MonoImage *ppdb_image;
40 char *s, *ppdb_filename;
41 MonoImageOpenStatus status;
43 MonoTableInfo *tables;
44 guint32 cols [MONO_MODULE_SIZE];
45 const char *guid, *ppdb_guid;
49 /* ppdb files drop the .exe/.dll extension */
50 filename = mono_image_get_filename (image);
51 if (strlen (filename) > 4 && (!strcmp (filename + strlen (filename) - 4, ".exe"))) {
52 s = g_strdup (filename);
53 s [strlen (filename) - 4] = '\0';
54 ppdb_filename = g_strdup_printf ("%s.pdb", s);
57 ppdb_filename = g_strdup_printf ("%s.pdb", filename);
60 ppdb_image = mono_image_open_metadata_only (ppdb_filename, &status);
65 /* Check that the images match */
66 // FIXME: ppdb files no longer have a MODULE table */
67 tables = image->tables;
68 g_assert (tables [MONO_TABLE_MODULE].rows);
69 mono_metadata_decode_row (&tables [MONO_TABLE_MODULE], 0, cols, MONO_MODULE_SIZE);
70 guid = mono_metadata_guid_heap (image, cols [MONO_MODULE_MVID]);
72 tables = ppdb_image->tables;
73 g_assert (tables [MONO_TABLE_MODULE].rows);
74 mono_metadata_decode_row (&tables [MONO_TABLE_MODULE], 0, cols, MONO_MODULE_SIZE);
75 ppdb_guid = mono_metadata_guid_heap (ppdb_image, cols [MONO_MODULE_MVID]);
77 if (memcmp (guid, ppdb_guid, 16) != 0) {
78 g_warning ("Symbol file %s doesn't match image %s", ppdb_image->name,
80 mono_image_close (ppdb_image);
85 ppdb = g_new0 (MonoPPDBFile, 1);
86 ppdb->image = ppdb_image;
92 mono_ppdb_close (MonoDebugHandle *handle)
94 MonoPPDBFile *ppdb = handle->ppdb;
96 mono_image_close (ppdb->image);
98 g_hash_table_destroy (ppdb->doc_cache);
102 MonoDebugMethodInfo *
103 mono_ppdb_lookup_method (MonoDebugHandle *handle, MonoMethod *method)
105 MonoDebugMethodInfo *minfo;
107 if (handle->image != mono_class_get_image (mono_method_get_class (method)))
112 // FIXME: Methods without tokens
114 minfo = g_new0 (MonoDebugMethodInfo, 1);
116 minfo->method = method;
117 minfo->handle = handle;
122 static MonoDebugSourceInfo*
123 get_docinfo (MonoPPDBFile *ppdb, MonoImage *image, int docidx)
125 MonoTableInfo *tables = image->tables;
126 guint32 cols [MONO_DOCUMENT_SIZE];
129 const char *part_ptr;
130 int size, part_size, partidx, nparts;
133 MonoDebugSourceInfo *res;
137 mono_metadata_decode_row (&tables [MONO_TABLE_DOCUMENT], docidx-1, cols, MONO_DOCUMENT_SIZE);
139 ptr = mono_metadata_blob_heap (image, cols [MONO_DOCUMENT_NAME]);
140 size = mono_metadata_decode_blob_size (ptr, &ptr);
147 s = g_string_new ("");
150 while (ptr < start + size) {
151 partidx = mono_metadata_decode_value (ptr, &ptr);
153 g_string_append_c (s, sep);
155 part_ptr = mono_metadata_blob_heap (image, partidx);
156 part_size = mono_metadata_decode_blob_size (part_ptr, &part_ptr);
159 g_string_append_len (s, part_ptr, part_size);
164 res = g_new0 (MonoDebugSourceInfo, 1);
165 res->source_file = g_string_free (s, FALSE);
167 res->hash = (guint8*)mono_metadata_blob_heap (image, cols [MONO_DOCUMENT_HASH]);
173 get_docname (MonoPPDBFile *ppdb, MonoImage *image, int docidx)
175 MonoDebugSourceInfo *info;
177 info = get_docinfo (ppdb, image, docidx);
178 return g_strdup (info->source_file);
182 * mono_ppdb_lookup_location:
183 * @minfo: A `MonoDebugMethodInfo' which can be retrieved by
184 * mono_debug_lookup_method().
185 * @offset: IL offset within the corresponding method's CIL code.
187 * This function is similar to mono_debug_lookup_location(), but we
188 * already looked up the method and also already did the
189 * `native address -> IL offset' mapping.
191 MonoDebugSourceLocation *
192 mono_ppdb_lookup_location (MonoDebugMethodInfo *minfo, uint32_t offset)
194 MonoPPDBFile *ppdb = minfo->handle->ppdb;
195 MonoImage *image = ppdb->image;
196 MonoMethod *method = minfo->method;
197 MonoTableInfo *tables = image->tables;
198 guint32 cols [MONO_METHODBODY_SIZE];
202 int idx, size, docidx, iloffset, delta_il, delta_lines, delta_cols, start_line, start_col, adv_line, adv_col;
203 gboolean first = TRUE, first_non_hidden = TRUE;
204 MonoDebugSourceLocation *location;
206 g_assert (method->token);
208 idx = mono_metadata_token_index (method->token);
210 mono_metadata_decode_row (&tables [MONO_TABLE_METHODBODY], idx-1, cols, MONO_METHODBODY_SIZE);
213 g_assert (cols [MONO_METHODBODY_SEQ_POINTS]);
215 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODBODY_SEQ_POINTS]);
216 size = mono_metadata_decode_blob_size (ptr, &ptr);
221 mono_metadata_decode_value (ptr, &ptr);
222 docidx = mono_metadata_decode_value (ptr, &ptr);
223 docname = get_docname (ppdb, image, docidx);
229 delta_il = mono_metadata_decode_value (ptr, &ptr);
230 if (!first && delta_il == 0) {
231 /* Document record */
233 g_assert_not_reached ();
235 if (!first && iloffset + delta_il > offset)
237 iloffset += delta_il;
240 delta_lines = mono_metadata_decode_value (ptr, &ptr);
241 if (delta_lines == 0)
242 delta_cols = mono_metadata_decode_value (ptr, &ptr);
244 delta_cols = mono_metadata_decode_signed_value (ptr, &ptr);
245 if (delta_lines == 0 && delta_cols == 0)
247 g_assert_not_reached ();
248 if (first_non_hidden) {
249 start_line = mono_metadata_decode_value (ptr, &ptr);
250 start_col = mono_metadata_decode_value (ptr, &ptr);
252 adv_line = mono_metadata_decode_signed_value (ptr, &ptr);
253 adv_col = mono_metadata_decode_signed_value (ptr, &ptr);
254 start_line += adv_line;
255 start_col += adv_col;
257 first_non_hidden = TRUE;
260 location = g_new0 (MonoDebugSourceLocation, 1);
261 location->source_file = docname;
262 location->row = start_line;
263 location->il_offset = iloffset;
269 mono_ppdb_get_seq_points (MonoDebugMethodInfo *minfo, char **source_file, GPtrArray **source_file_list, int **source_files, MonoSymSeqPoint **seq_points, int *n_seq_points)
271 MonoPPDBFile *ppdb = minfo->handle->ppdb;
272 MonoImage *image = ppdb->image;
273 MonoMethod *method = minfo->method;
274 MonoTableInfo *tables = image->tables;
275 guint32 cols [MONO_METHODBODY_SIZE];
278 MonoDebugSourceInfo *docinfo;
279 int i, method_idx, size, docidx, iloffset, delta_il, delta_lines, delta_cols, start_line, start_col, adv_line, adv_col;
280 gboolean first = TRUE, first_non_hidden = TRUE;
283 GPtrArray *sfiles = NULL;
284 GPtrArray *sindexes = NULL;
288 if (source_file_list)
289 *source_file_list = NULL;
291 *source_files = NULL;
297 if (source_file_list)
298 *source_file_list = sfiles = g_ptr_array_new ();
300 sindexes = g_ptr_array_new ();
305 method_idx = mono_metadata_token_index (method->token);
307 mono_metadata_decode_row (&tables [MONO_TABLE_METHODBODY], method_idx-1, cols, MONO_METHODBODY_SIZE);
309 if (!cols [MONO_METHODBODY_SEQ_POINTS])
312 ptr = mono_metadata_blob_heap (image, cols [MONO_METHODBODY_SEQ_POINTS]);
313 size = mono_metadata_decode_blob_size (ptr, &ptr);
316 sps = g_array_new (FALSE, TRUE, sizeof (MonoSymSeqPoint));
320 mono_metadata_decode_value (ptr, &ptr);
321 docidx = mono_metadata_decode_value (ptr, &ptr);
322 docinfo = get_docinfo (ppdb, image, docidx);
324 g_ptr_array_add (sfiles, docinfo);
330 delta_il = mono_metadata_decode_value (ptr, &ptr);
331 if (!first && delta_il == 0) {
332 /* subsequent-document-record */
333 docidx = mono_metadata_decode_value (ptr, &ptr);
334 docinfo = get_docinfo (ppdb, image, docidx);
336 g_ptr_array_add (sfiles, docinfo);
339 iloffset += delta_il;
342 delta_lines = mono_metadata_decode_value (ptr, &ptr);
343 if (delta_lines == 0)
344 delta_cols = mono_metadata_decode_value (ptr, &ptr);
346 delta_cols = mono_metadata_decode_signed_value (ptr, &ptr);
348 if (delta_lines == 0 && delta_cols == 0) {
349 /* Hidden sequence point */
353 if (first_non_hidden) {
354 start_line = mono_metadata_decode_value (ptr, &ptr);
355 start_col = mono_metadata_decode_value (ptr, &ptr);
357 adv_line = mono_metadata_decode_signed_value (ptr, &ptr);
358 adv_col = mono_metadata_decode_signed_value (ptr, &ptr);
359 start_line += adv_line;
360 start_col += adv_col;
362 first_non_hidden = TRUE;
364 memset (&sp, 0, sizeof (sp));
365 sp.il_offset = iloffset;
366 sp.line = start_line;
367 sp.column = start_col;
368 sp.end_line = start_line + delta_lines;
369 sp.end_column = start_col + delta_cols;
371 g_array_append_val (sps, sp);
373 g_ptr_array_add (sindexes, GUINT_TO_POINTER (sfiles->len - 1));
377 *n_seq_points = sps->len;
378 g_assert (seq_points);
379 *seq_points = g_new (MonoSymSeqPoint, sps->len);
380 memcpy (*seq_points, sps->data, sps->len * sizeof (MonoSymSeqPoint));
384 *source_file = g_strdup (((MonoDebugSourceInfo*)g_ptr_array_index (sfiles, 0))->source_file);
386 *source_files = g_new (int, sps->len);
387 for (i = 0; i < sps->len; ++i)
388 (*source_files)[i] = GPOINTER_TO_INT (g_ptr_array_index (sindexes, i));
389 g_ptr_array_free (sindexes, TRUE);
392 g_array_free (sps, TRUE);
396 mono_ppdb_lookup_locals (MonoDebugMethodInfo *minfo)
398 MonoPPDBFile *ppdb = minfo->handle->ppdb;
399 MonoImage *image = ppdb->image;
400 MonoTableInfo *tables = image->tables;
401 MonoMethod *method = minfo->method;
402 guint32 cols [MONO_LOCALSCOPE_SIZE];
403 guint32 locals_cols [MONO_LOCALVARIABLE_SIZE];
404 int i, lindex, sindex, method_idx, start_scope_idx, scope_idx, locals_idx, locals_end_idx, nscopes;
405 MonoDebugLocalsInfo *res;
406 MonoMethodSignature *sig;
411 sig = mono_method_signature (method);
415 method_idx = mono_metadata_token_index (method->token);
417 start_scope_idx = mono_metadata_localscope_from_methoddef (image, method_idx);
419 if (!start_scope_idx)
422 /* Compute number of locals and scopes */
423 scope_idx = start_scope_idx;
424 mono_metadata_decode_row (&tables [MONO_TABLE_LOCALSCOPE], scope_idx-1, cols, MONO_LOCALSCOPE_SIZE);
425 locals_idx = cols [MONO_LOCALSCOPE_VARIABLELIST];
427 mono_metadata_decode_row (&tables [MONO_TABLE_LOCALSCOPE], scope_idx-1, cols, MONO_LOCALSCOPE_SIZE);
428 if (cols [MONO_LOCALSCOPE_METHOD] != method_idx)
432 nscopes = scope_idx - start_scope_idx;
433 if (scope_idx == tables [MONO_TABLE_LOCALSCOPE].rows) {
435 g_assert_not_reached ();
438 locals_end_idx = cols [MONO_LOCALSCOPE_VARIABLELIST];
441 res = g_new0 (MonoDebugLocalsInfo, 1);
442 res->num_blocks = nscopes;
443 res->code_blocks = g_new0 (MonoDebugCodeBlock, res->num_blocks);
444 res->num_locals = locals_end_idx - locals_idx;
445 res->locals = g_new0 (MonoDebugLocalVar, res->num_locals);
448 for (sindex = 0; sindex < nscopes; ++sindex) {
449 scope_idx = start_scope_idx + sindex;
450 mono_metadata_decode_row (&tables [MONO_TABLE_LOCALSCOPE], scope_idx-1, cols, MONO_LOCALSCOPE_SIZE);
452 locals_idx = cols [MONO_LOCALSCOPE_VARIABLELIST];
453 if (scope_idx == tables [MONO_TABLE_LOCALSCOPE].rows) {
455 g_assert_not_reached ();
457 locals_end_idx = mono_metadata_decode_row_col (&tables [MONO_TABLE_LOCALSCOPE], scope_idx-1 + 1, MONO_LOCALSCOPE_VARIABLELIST);
460 res->code_blocks [sindex].start_offset = cols [MONO_LOCALSCOPE_STARTOFFSET];
461 res->code_blocks [sindex].end_offset = cols [MONO_LOCALSCOPE_STARTOFFSET] + cols [MONO_LOCALSCOPE_LENGTH];
463 //printf ("Scope: %s %d %d %d-%d\n", mono_method_full_name (method, 1), cols [MONO_LOCALSCOPE_STARTOFFSET], cols [MONO_LOCALSCOPE_LENGTH], locals_idx, locals_end_idx);
465 for (i = locals_idx; i < locals_end_idx; ++i) {
466 mono_metadata_decode_row (&tables [MONO_TABLE_LOCALVARIABLE], i - 1, locals_cols, MONO_LOCALVARIABLE_SIZE);
468 res->locals [lindex].name = g_strdup (mono_metadata_string_heap (image, locals_cols [MONO_LOCALVARIABLE_NAME]));
469 res->locals [lindex].index = locals_cols [MONO_LOCALVARIABLE_INDEX];
470 res->locals [lindex].block = &res->code_blocks [sindex];
473 //printf ("\t %s %d\n", mono_metadata_string_heap (image, locals_cols [MONO_LOCALVARIABLE_NAME]), locals_cols [MONO_LOCALVARIABLE_INDEX]);