1 /* XML target description support for GDB.
3 Copyright (C) 2006-2017 Free Software Foundation, Inc.
5 Contributed by CodeSourcery.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "target-descriptions.h"
25 #include "xml-support.h"
26 #include "xml-tdesc.h"
28 #include "filenames.h"
31 This is just to catch obviously wrong values. */
32 #define MAX_FIELD_SIZE 65536
33 #define MAX_FIELD_BITSIZE (MAX_FIELD_SIZE * TARGET_CHAR_BIT)
34 #define MAX_VECTOR_SIZE 65536
36 #if !defined(HAVE_LIBEXPAT)
38 /* Parse DOCUMENT into a target description. Or don't, since we don't have
41 static struct target_desc
*
42 tdesc_parse_xml (const char *document
, xml_fetch_another fetcher
,
45 static int have_warned
;
50 warning (_("Can not parse XML target description; XML support was "
51 "disabled at compile time"));
57 #else /* HAVE_LIBEXPAT */
59 /* A record of every XML description we have parsed. We never discard
60 old descriptions, because we never discard gdbarches. As long as we
61 have a gdbarch referencing this description, we want to have a copy
62 of it here, so that if we parse the same XML document again we can
63 return the same "struct target_desc *"; if they are not singletons,
64 then we will create unnecessary duplicate gdbarches. See
65 gdbarch_list_lookup_by_info. */
67 struct tdesc_xml_cache
69 const char *xml_document
;
70 struct target_desc
*tdesc
;
72 typedef struct tdesc_xml_cache tdesc_xml_cache_s
;
73 DEF_VEC_O(tdesc_xml_cache_s
);
75 static VEC(tdesc_xml_cache_s
) *xml_cache
;
77 /* Callback data for target description parsing. */
79 struct tdesc_parsing_data
81 /* The target description we are building. */
82 struct target_desc
*tdesc
;
84 /* The target feature we are currently parsing, or last parsed. */
85 struct tdesc_feature
*current_feature
;
87 /* The register number to use for the next register we see, if
88 it does not have its own. This starts at zero. */
91 /* The struct or union we are currently parsing, or last parsed. */
92 struct tdesc_type
*current_type
;
94 /* The byte size of the current struct/flags type, if specified. Zero
95 if not specified. Flags values must specify a size. */
96 int current_type_size
;
99 /* Handle the end of an <architecture> element and its value. */
102 tdesc_end_arch (struct gdb_xml_parser
*parser
,
103 const struct gdb_xml_element
*element
,
104 void *user_data
, const char *body_text
)
106 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
107 const struct bfd_arch_info
*arch
;
109 arch
= bfd_scan_arch (body_text
);
111 gdb_xml_error (parser
, _("Target description specified unknown "
112 "architecture \"%s\""), body_text
);
113 set_tdesc_architecture (data
->tdesc
, arch
);
116 /* Handle the end of an <osabi> element and its value. */
119 tdesc_end_osabi (struct gdb_xml_parser
*parser
,
120 const struct gdb_xml_element
*element
,
121 void *user_data
, const char *body_text
)
123 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
124 enum gdb_osabi osabi
;
126 osabi
= osabi_from_tdesc_string (body_text
);
127 if (osabi
== GDB_OSABI_UNKNOWN
)
128 warning (_("Target description specified unknown osabi \"%s\""),
131 set_tdesc_osabi (data
->tdesc
, osabi
);
134 /* Handle the end of a <compatible> element and its value. */
137 tdesc_end_compatible (struct gdb_xml_parser
*parser
,
138 const struct gdb_xml_element
*element
,
139 void *user_data
, const char *body_text
)
141 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
142 const struct bfd_arch_info
*arch
;
144 arch
= bfd_scan_arch (body_text
);
145 tdesc_add_compatible (data
->tdesc
, arch
);
148 /* Handle the start of a <target> element. */
151 tdesc_start_target (struct gdb_xml_parser
*parser
,
152 const struct gdb_xml_element
*element
,
153 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
155 char *version
= (char *) xml_find_attribute (attributes
, "version")->value
;
157 if (strcmp (version
, "1.0") != 0)
158 gdb_xml_error (parser
,
159 _("Target description has unsupported version \"%s\""),
163 /* Handle the start of a <feature> element. */
166 tdesc_start_feature (struct gdb_xml_parser
*parser
,
167 const struct gdb_xml_element
*element
,
168 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
170 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
171 char *name
= (char *) xml_find_attribute (attributes
, "name")->value
;
173 data
->current_feature
= tdesc_create_feature (data
->tdesc
, name
);
176 /* Handle the start of a <reg> element. Fill in the optional
177 attributes and attach it to the containing feature. */
180 tdesc_start_reg (struct gdb_xml_parser
*parser
,
181 const struct gdb_xml_element
*element
,
182 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
184 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
185 struct gdb_xml_value
*attrs
= VEC_address (gdb_xml_value_s
, attributes
);
189 int bitsize
, regnum
, save_restore
;
191 length
= VEC_length (gdb_xml_value_s
, attributes
);
193 name
= (char *) attrs
[ix
++].value
;
194 bitsize
= * (ULONGEST
*) attrs
[ix
++].value
;
196 if (ix
< length
&& strcmp (attrs
[ix
].name
, "regnum") == 0)
197 regnum
= * (ULONGEST
*) attrs
[ix
++].value
;
199 regnum
= data
->next_regnum
;
201 if (ix
< length
&& strcmp (attrs
[ix
].name
, "type") == 0)
202 type
= (char *) attrs
[ix
++].value
;
206 if (ix
< length
&& strcmp (attrs
[ix
].name
, "group") == 0)
207 group
= (char *) attrs
[ix
++].value
;
211 if (ix
< length
&& strcmp (attrs
[ix
].name
, "save-restore") == 0)
212 save_restore
= * (ULONGEST
*) attrs
[ix
++].value
;
216 if (strcmp (type
, "int") != 0
217 && strcmp (type
, "float") != 0
218 && tdesc_named_type (data
->current_feature
, type
) == NULL
)
219 gdb_xml_error (parser
, _("Register \"%s\" has unknown type \"%s\""),
222 tdesc_create_reg (data
->current_feature
, name
, regnum
, save_restore
, group
,
225 data
->next_regnum
= regnum
+ 1;
228 /* Handle the start of a <union> element. Initialize the type and
229 record it with the current feature. */
232 tdesc_start_union (struct gdb_xml_parser
*parser
,
233 const struct gdb_xml_element
*element
,
234 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
236 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
237 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
239 data
->current_type
= tdesc_create_union (data
->current_feature
, id
);
240 data
->current_type_size
= 0;
243 /* Handle the start of a <struct> element. Initialize the type and
244 record it with the current feature. */
247 tdesc_start_struct (struct gdb_xml_parser
*parser
,
248 const struct gdb_xml_element
*element
,
249 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
251 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
252 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
253 struct tdesc_type
*type
;
254 struct gdb_xml_value
*attr
;
256 type
= tdesc_create_struct (data
->current_feature
, id
);
257 data
->current_type
= type
;
258 data
->current_type_size
= 0;
260 attr
= xml_find_attribute (attributes
, "size");
263 ULONGEST size
= * (ULONGEST
*) attr
->value
;
265 if (size
> MAX_FIELD_SIZE
)
267 gdb_xml_error (parser
,
268 _("Struct size %s is larger than maximum (%d)"),
269 pulongest (size
), MAX_FIELD_SIZE
);
271 tdesc_set_struct_size (type
, size
);
272 data
->current_type_size
= size
;
277 tdesc_start_flags (struct gdb_xml_parser
*parser
,
278 const struct gdb_xml_element
*element
,
279 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
281 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
282 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
283 ULONGEST size
= * (ULONGEST
*)
284 xml_find_attribute (attributes
, "size")->value
;
285 struct tdesc_type
*type
;
287 if (size
> MAX_FIELD_SIZE
)
289 gdb_xml_error (parser
,
290 _("Flags size %s is larger than maximum (%d)"),
291 pulongest (size
), MAX_FIELD_SIZE
);
293 type
= tdesc_create_flags (data
->current_feature
, id
, size
);
295 data
->current_type
= type
;
296 data
->current_type_size
= size
;
300 tdesc_start_enum (struct gdb_xml_parser
*parser
,
301 const struct gdb_xml_element
*element
,
302 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
304 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
305 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
306 int size
= * (ULONGEST
*)
307 xml_find_attribute (attributes
, "size")->value
;
308 struct tdesc_type
*type
;
310 if (size
> MAX_FIELD_SIZE
)
312 gdb_xml_error (parser
,
313 _("Enum size %s is larger than maximum (%d)"),
314 pulongest (size
), MAX_FIELD_SIZE
);
316 type
= tdesc_create_enum (data
->current_feature
, id
, size
);
318 data
->current_type
= type
;
319 data
->current_type_size
= 0;
322 /* Handle the start of a <field> element. Attach the field to the
323 current struct, union or flags. */
326 tdesc_start_field (struct gdb_xml_parser
*parser
,
327 const struct gdb_xml_element
*element
,
328 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
330 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
331 struct gdb_xml_value
*attr
;
332 struct tdesc_type
*field_type
;
333 char *field_name
, *field_type_id
;
336 field_name
= (char *) xml_find_attribute (attributes
, "name")->value
;
338 attr
= xml_find_attribute (attributes
, "type");
341 field_type_id
= (char *) attr
->value
;
342 field_type
= tdesc_named_type (data
->current_feature
, field_type_id
);
346 field_type_id
= NULL
;
350 attr
= xml_find_attribute (attributes
, "start");
353 ULONGEST ul_start
= * (ULONGEST
*) attr
->value
;
355 if (ul_start
> MAX_FIELD_BITSIZE
)
357 gdb_xml_error (parser
,
358 _("Field start %s is larger than maximum (%d)"),
359 pulongest (ul_start
), MAX_FIELD_BITSIZE
);
366 attr
= xml_find_attribute (attributes
, "end");
369 ULONGEST ul_end
= * (ULONGEST
*) attr
->value
;
371 if (ul_end
> MAX_FIELD_BITSIZE
)
373 gdb_xml_error (parser
,
374 _("Field end %s is larger than maximum (%d)"),
375 pulongest (ul_end
), MAX_FIELD_BITSIZE
);
384 struct tdesc_type
*t
= data
->current_type
;
386 /* Older versions of gdb can't handle elided end values.
387 Stick with that for now, to help ensure backward compatibility.
388 E.g., If a newer gdbserver is talking to an older gdb. */
390 gdb_xml_error (parser
, _("Missing end value"));
392 if (data
->current_type_size
== 0)
393 gdb_xml_error (parser
,
394 _("Bitfields must live in explicitly sized types"));
396 if (field_type_id
!= NULL
397 && strcmp (field_type_id
, "bool") == 0
400 gdb_xml_error (parser
,
401 _("Boolean fields must be one bit in size"));
405 gdb_xml_error (parser
,
406 _("Bitfield \"%s\" goes past "
407 "64 bits (unsupported)"),
410 /* Assume that the bit numbering in XML is "lsb-zero". Most
411 architectures other than PowerPC use this ordering. In the
412 future, we can add an XML tag to indicate "msb-zero" numbering. */
414 gdb_xml_error (parser
, _("Bitfield \"%s\" has start after end"),
416 if (end
>= data
->current_type_size
* TARGET_CHAR_BIT
)
417 gdb_xml_error (parser
, _("Bitfield \"%s\" does not fit in struct"),
420 if (field_type
!= NULL
)
421 tdesc_add_typed_bitfield (t
, field_name
, start
, end
, field_type
);
422 else if (start
== end
)
423 tdesc_add_flag (t
, start
, field_name
);
425 tdesc_add_bitfield (t
, field_name
, start
, end
);
427 else if (start
== -1 && end
!= -1)
428 gdb_xml_error (parser
, _("End specified but not start"));
429 else if (field_type_id
!= NULL
)
431 /* TDESC_TYPE_FLAGS values are explicitly sized, so the following test
432 catches adding non-bitfield types to flags as well. */
433 if (data
->current_type_size
!= 0)
434 gdb_xml_error (parser
,
435 _("Explicitly sized type cannot "
436 "contain non-bitfield \"%s\""),
439 if (field_type
== NULL
)
440 gdb_xml_error (parser
, _("Field \"%s\" references undefined "
442 field_name
, field_type_id
);
444 tdesc_add_field (data
->current_type
, field_name
, field_type
);
447 gdb_xml_error (parser
, _("Field \"%s\" has neither type nor bit position"),
451 /* Handle the start of an <evalue> element. Attach the value to the
455 tdesc_start_enum_value (struct gdb_xml_parser
*parser
,
456 const struct gdb_xml_element
*element
,
457 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
459 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
460 struct gdb_xml_value
*attr
;
465 field_name
= (char *) xml_find_attribute (attributes
, "name")->value
;
467 attr
= xml_find_attribute (attributes
, "value");
468 ul_value
= * (ULONGEST
*) attr
->value
;
469 if (ul_value
> INT_MAX
)
471 gdb_xml_error (parser
,
472 _("Enum value %s is larger than maximum (%d)"),
473 pulongest (ul_value
), INT_MAX
);
477 tdesc_add_enum_value (data
->current_type
, value
, field_name
);
480 /* Handle the start of a <vector> element. Initialize the type and
481 record it with the current feature. */
484 tdesc_start_vector (struct gdb_xml_parser
*parser
,
485 const struct gdb_xml_element
*element
,
486 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
488 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
489 struct gdb_xml_value
*attrs
= VEC_address (gdb_xml_value_s
, attributes
);
490 struct tdesc_type
*field_type
;
491 char *id
, *field_type_id
;
494 id
= (char *) attrs
[0].value
;
495 field_type_id
= (char *) attrs
[1].value
;
496 count
= * (ULONGEST
*) attrs
[2].value
;
498 if (count
> MAX_VECTOR_SIZE
)
500 gdb_xml_error (parser
,
501 _("Vector size %s is larger than maximum (%d)"),
502 pulongest (count
), MAX_VECTOR_SIZE
);
505 field_type
= tdesc_named_type (data
->current_feature
, field_type_id
);
506 if (field_type
== NULL
)
507 gdb_xml_error (parser
, _("Vector \"%s\" references undefined type \"%s\""),
510 tdesc_create_vector (data
->current_feature
, id
, field_type
, count
);
513 /* The elements and attributes of an XML target description. */
515 static const struct gdb_xml_attribute field_attributes
[] = {
516 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
517 { "type", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
518 { "start", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
519 { "end", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
520 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
523 static const struct gdb_xml_attribute enum_value_attributes
[] = {
524 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
525 { "value", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
526 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
529 static const struct gdb_xml_element struct_union_children
[] = {
530 { "field", field_attributes
, NULL
, GDB_XML_EF_REPEATABLE
,
531 tdesc_start_field
, NULL
},
532 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
535 static const struct gdb_xml_element enum_children
[] = {
536 { "evalue", enum_value_attributes
, NULL
, GDB_XML_EF_REPEATABLE
,
537 tdesc_start_enum_value
, NULL
},
538 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
541 static const struct gdb_xml_attribute reg_attributes
[] = {
542 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
543 { "bitsize", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
544 { "regnum", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
545 { "type", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
546 { "group", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
547 { "save-restore", GDB_XML_AF_OPTIONAL
,
548 gdb_xml_parse_attr_enum
, gdb_xml_enums_boolean
},
549 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
552 static const struct gdb_xml_attribute struct_union_attributes
[] = {
553 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
554 { "size", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
555 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
558 static const struct gdb_xml_attribute flags_attributes
[] = {
559 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
560 { "size", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
561 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
564 static const struct gdb_xml_attribute enum_attributes
[] = {
565 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
566 { "size", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
567 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
570 static const struct gdb_xml_attribute vector_attributes
[] = {
571 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
572 { "type", GDB_XML_AF_NONE
, NULL
, NULL
},
573 { "count", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
574 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
577 static const struct gdb_xml_attribute feature_attributes
[] = {
578 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
579 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
582 static const struct gdb_xml_element feature_children
[] = {
583 { "reg", reg_attributes
, NULL
,
584 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
585 tdesc_start_reg
, NULL
},
586 { "struct", struct_union_attributes
, struct_union_children
,
587 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
588 tdesc_start_struct
, NULL
},
589 { "union", struct_union_attributes
, struct_union_children
,
590 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
591 tdesc_start_union
, NULL
},
592 { "flags", flags_attributes
, struct_union_children
,
593 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
594 tdesc_start_flags
, NULL
},
595 { "enum", enum_attributes
, enum_children
,
596 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
597 tdesc_start_enum
, NULL
},
598 { "vector", vector_attributes
, NULL
,
599 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
600 tdesc_start_vector
, NULL
},
601 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
604 static const struct gdb_xml_attribute target_attributes
[] = {
605 { "version", GDB_XML_AF_NONE
, NULL
, NULL
},
606 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
609 static const struct gdb_xml_element target_children
[] = {
610 { "architecture", NULL
, NULL
, GDB_XML_EF_OPTIONAL
,
611 NULL
, tdesc_end_arch
},
612 { "osabi", NULL
, NULL
, GDB_XML_EF_OPTIONAL
,
613 NULL
, tdesc_end_osabi
},
614 { "compatible", NULL
, NULL
, GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
615 NULL
, tdesc_end_compatible
},
616 { "feature", feature_attributes
, feature_children
,
617 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
618 tdesc_start_feature
, NULL
},
619 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
622 static const struct gdb_xml_element tdesc_elements
[] = {
623 { "target", target_attributes
, target_children
, GDB_XML_EF_NONE
,
624 tdesc_start_target
, NULL
},
625 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
628 /* Parse DOCUMENT into a target description and return it. */
630 static struct target_desc
*
631 tdesc_parse_xml (const char *document
, xml_fetch_another fetcher
,
634 struct cleanup
*back_to
, *result_cleanup
;
635 struct tdesc_parsing_data data
;
636 struct tdesc_xml_cache
*cache
;
640 /* Expand all XInclude directives. */
641 expanded_text
= xml_process_xincludes (_("target description"),
642 document
, fetcher
, fetcher_baton
, 0);
643 if (expanded_text
== NULL
)
645 warning (_("Could not load XML target description; ignoring"));
649 /* Check for an exact match in the list of descriptions we have
650 previously parsed. strcmp is a slightly inefficient way to
651 do this; an SHA-1 checksum would work as well. */
652 for (ix
= 0; VEC_iterate (tdesc_xml_cache_s
, xml_cache
, ix
, cache
); ix
++)
653 if (strcmp (cache
->xml_document
, expanded_text
) == 0)
655 xfree (expanded_text
);
659 back_to
= make_cleanup (null_cleanup
, NULL
);
661 memset (&data
, 0, sizeof (struct tdesc_parsing_data
));
662 data
.tdesc
= allocate_target_description ();
663 result_cleanup
= make_cleanup_free_target_description (data
.tdesc
);
664 make_cleanup (xfree
, expanded_text
);
666 if (gdb_xml_parse_quick (_("target description"), "gdb-target.dtd",
667 tdesc_elements
, expanded_text
, &data
) == 0)
669 /* Parsed successfully. */
670 struct tdesc_xml_cache new_cache
;
672 new_cache
.xml_document
= expanded_text
;
673 new_cache
.tdesc
= data
.tdesc
;
674 VEC_safe_push (tdesc_xml_cache_s
, xml_cache
, &new_cache
);
675 discard_cleanups (result_cleanup
);
676 do_cleanups (back_to
);
681 warning (_("Could not load XML target description; ignoring"));
682 do_cleanups (back_to
);
686 #endif /* HAVE_LIBEXPAT */
689 /* Read an XML target description from FILENAME. Parse it, and return
690 the parsed description. */
692 const struct target_desc
*
693 file_read_description_xml (const char *filename
)
695 struct target_desc
*tdesc
;
697 struct cleanup
*back_to
;
699 tdesc_str
= xml_fetch_content_from_file (filename
, NULL
);
700 if (tdesc_str
== NULL
)
702 warning (_("Could not open \"%s\""), filename
);
706 back_to
= make_cleanup (xfree
, tdesc_str
);
708 tdesc
= tdesc_parse_xml (tdesc_str
, xml_fetch_content_from_file
,
709 (void *) ldirname (filename
).c_str ());
710 do_cleanups (back_to
);
715 /* Read a string representation of available features from the target,
716 using TARGET_OBJECT_AVAILABLE_FEATURES. The returned string is
717 malloc allocated and NUL-terminated. NAME should be a non-NULL
718 string identifying the XML document we want; the top level document
719 is "target.xml". Other calls may be performed for the DTD or
723 fetch_available_features_from_target (const char *name
, void *baton_
)
725 struct target_ops
*ops
= (struct target_ops
*) baton_
;
727 /* Read this object as a string. This ensures that a NUL
728 terminator is added. */
729 return target_read_stralloc (ops
,
730 TARGET_OBJECT_AVAILABLE_FEATURES
,
735 /* Read an XML target description using OPS. Parse it, and return the
736 parsed description. */
738 const struct target_desc
*
739 target_read_description_xml (struct target_ops
*ops
)
741 struct target_desc
*tdesc
;
743 struct cleanup
*back_to
;
745 tdesc_str
= fetch_available_features_from_target ("target.xml", ops
);
746 if (tdesc_str
== NULL
)
749 back_to
= make_cleanup (xfree
, tdesc_str
);
750 tdesc
= tdesc_parse_xml (tdesc_str
,
751 fetch_available_features_from_target
,
753 do_cleanups (back_to
);
758 /* Fetches an XML target description using OPS, processing
759 includes, but not parsing it. Used to dump whole tdesc
760 as a single XML file. */
763 target_fetch_description_xml (struct target_ops
*ops
)
765 #if !defined(HAVE_LIBEXPAT)
766 static int have_warned
;
771 warning (_("Can not fetch XML target description; XML support was "
772 "disabled at compile time"));
777 struct target_desc
*tdesc
;
780 struct cleanup
*back_to
;
782 tdesc_str
= fetch_available_features_from_target ("target.xml", ops
);
783 if (tdesc_str
== NULL
)
786 back_to
= make_cleanup (xfree
, tdesc_str
);
787 expanded_text
= xml_process_xincludes (_("target description"),
789 fetch_available_features_from_target
, ops
, 0);
790 do_cleanups (back_to
);
791 if (expanded_text
== NULL
)
793 warning (_("Could not load XML target description; ignoring"));
797 return expanded_text
;