1 /* XML target description support for GDB.
3 Copyright (C) 2006-2016 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
);
187 char *name
, *group
, *type
;
188 int bitsize
, regnum
, save_restore
;
190 length
= VEC_length (gdb_xml_value_s
, attributes
);
192 name
= (char *) attrs
[ix
++].value
;
193 bitsize
= * (ULONGEST
*) attrs
[ix
++].value
;
195 if (ix
< length
&& strcmp (attrs
[ix
].name
, "regnum") == 0)
196 regnum
= * (ULONGEST
*) attrs
[ix
++].value
;
198 regnum
= data
->next_regnum
;
200 if (ix
< length
&& strcmp (attrs
[ix
].name
, "type") == 0)
201 type
= (char *) attrs
[ix
++].value
;
205 if (ix
< length
&& strcmp (attrs
[ix
].name
, "group") == 0)
206 group
= (char *) attrs
[ix
++].value
;
210 if (ix
< length
&& strcmp (attrs
[ix
].name
, "save-restore") == 0)
211 save_restore
= * (ULONGEST
*) attrs
[ix
++].value
;
215 if (strcmp (type
, "int") != 0
216 && strcmp (type
, "float") != 0
217 && tdesc_named_type (data
->current_feature
, type
) == NULL
)
218 gdb_xml_error (parser
, _("Register \"%s\" has unknown type \"%s\""),
221 tdesc_create_reg (data
->current_feature
, name
, regnum
, save_restore
, group
,
224 data
->next_regnum
= regnum
+ 1;
227 /* Handle the start of a <union> element. Initialize the type and
228 record it with the current feature. */
231 tdesc_start_union (struct gdb_xml_parser
*parser
,
232 const struct gdb_xml_element
*element
,
233 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
235 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
236 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
238 data
->current_type
= tdesc_create_union (data
->current_feature
, id
);
239 data
->current_type_size
= 0;
242 /* Handle the start of a <struct> element. Initialize the type and
243 record it with the current feature. */
246 tdesc_start_struct (struct gdb_xml_parser
*parser
,
247 const struct gdb_xml_element
*element
,
248 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
250 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
251 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
252 struct tdesc_type
*type
;
253 struct gdb_xml_value
*attr
;
255 type
= tdesc_create_struct (data
->current_feature
, id
);
256 data
->current_type
= type
;
257 data
->current_type_size
= 0;
259 attr
= xml_find_attribute (attributes
, "size");
262 ULONGEST size
= * (ULONGEST
*) attr
->value
;
264 if (size
> MAX_FIELD_SIZE
)
266 gdb_xml_error (parser
,
267 _("Struct size %s is larger than maximum (%d)"),
268 pulongest (size
), MAX_FIELD_SIZE
);
270 tdesc_set_struct_size (type
, size
);
271 data
->current_type_size
= size
;
276 tdesc_start_flags (struct gdb_xml_parser
*parser
,
277 const struct gdb_xml_element
*element
,
278 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
280 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
281 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
282 ULONGEST size
= * (ULONGEST
*)
283 xml_find_attribute (attributes
, "size")->value
;
284 struct tdesc_type
*type
;
286 if (size
> MAX_FIELD_SIZE
)
288 gdb_xml_error (parser
,
289 _("Flags size %s is larger than maximum (%d)"),
290 pulongest (size
), MAX_FIELD_SIZE
);
292 type
= tdesc_create_flags (data
->current_feature
, id
, size
);
294 data
->current_type
= type
;
295 data
->current_type_size
= size
;
299 tdesc_start_enum (struct gdb_xml_parser
*parser
,
300 const struct gdb_xml_element
*element
,
301 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
303 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
304 char *id
= (char *) xml_find_attribute (attributes
, "id")->value
;
305 int size
= * (ULONGEST
*)
306 xml_find_attribute (attributes
, "size")->value
;
307 struct tdesc_type
*type
;
309 if (size
> MAX_FIELD_SIZE
)
311 gdb_xml_error (parser
,
312 _("Enum size %s is larger than maximum (%d)"),
313 pulongest (size
), MAX_FIELD_SIZE
);
315 type
= tdesc_create_enum (data
->current_feature
, id
, size
);
317 data
->current_type
= type
;
318 data
->current_type_size
= 0;
321 /* Handle the start of a <field> element. Attach the field to the
322 current struct, union or flags. */
325 tdesc_start_field (struct gdb_xml_parser
*parser
,
326 const struct gdb_xml_element
*element
,
327 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
329 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
330 struct gdb_xml_value
*attr
;
331 struct tdesc_type
*field_type
;
332 char *field_name
, *field_type_id
;
335 field_name
= (char *) xml_find_attribute (attributes
, "name")->value
;
337 attr
= xml_find_attribute (attributes
, "type");
340 field_type_id
= (char *) attr
->value
;
341 field_type
= tdesc_named_type (data
->current_feature
, field_type_id
);
345 field_type_id
= NULL
;
349 attr
= xml_find_attribute (attributes
, "start");
352 ULONGEST ul_start
= * (ULONGEST
*) attr
->value
;
354 if (ul_start
> MAX_FIELD_BITSIZE
)
356 gdb_xml_error (parser
,
357 _("Field start %s is larger than maximum (%d)"),
358 pulongest (ul_start
), MAX_FIELD_BITSIZE
);
365 attr
= xml_find_attribute (attributes
, "end");
368 ULONGEST ul_end
= * (ULONGEST
*) attr
->value
;
370 if (ul_end
> MAX_FIELD_BITSIZE
)
372 gdb_xml_error (parser
,
373 _("Field end %s is larger than maximum (%d)"),
374 pulongest (ul_end
), MAX_FIELD_BITSIZE
);
383 struct tdesc_type
*t
= data
->current_type
;
385 if (data
->current_type_size
== 0)
386 gdb_xml_error (parser
,
387 _("Bitfields must live in explicitly sized types"));
389 if (field_type_id
!= NULL
390 && strcmp (field_type_id
, "bool") == 0
391 && !(start
== end
|| end
== -1))
393 gdb_xml_error (parser
,
394 _("Boolean fields must be one bit in size"));
398 gdb_xml_error (parser
,
399 _("Bitfield \"%s\" goes past "
400 "64 bits (unsupported)"),
405 /* Assume that the bit numbering in XML is "lsb-zero". Most
406 architectures other than PowerPC use this ordering. In the
407 future, we can add an XML tag to indicate "msb-zero"
410 gdb_xml_error (parser
, _("Bitfield \"%s\" has start after end"),
412 if (end
>= data
->current_type_size
* TARGET_CHAR_BIT
)
413 gdb_xml_error (parser
,
414 _("Bitfield \"%s\" does not fit in struct"));
419 if (field_type
!= NULL
)
420 tdesc_add_typed_bitfield (t
, field_name
, start
, start
, field_type
);
422 tdesc_add_flag (t
, start
, field_name
);
424 else if (field_type
!= NULL
)
425 tdesc_add_typed_bitfield (t
, field_name
, start
, end
, field_type
);
427 tdesc_add_bitfield (t
, field_name
, start
, end
);
429 else if (start
== -1 && end
!= -1)
430 gdb_xml_error (parser
, _("End specified but not start"));
431 else if (field_type_id
!= NULL
)
433 /* TDESC_TYPE_FLAGS values are explicitly sized, so the following test
434 catches adding non-bitfield types to flags as well. */
435 if (data
->current_type_size
!= 0)
436 gdb_xml_error (parser
,
437 _("Explicitly sized type cannot "
438 "contain non-bitfield \"%s\""),
441 if (field_type
== NULL
)
442 gdb_xml_error (parser
, _("Field \"%s\" references undefined "
444 field_name
, field_type_id
);
446 tdesc_add_field (data
->current_type
, field_name
, field_type
);
449 gdb_xml_error (parser
, _("Field \"%s\" has neither type nor bit position"),
453 /* Handle the start of an <evalue> element. Attach the value to the
457 tdesc_start_enum_value (struct gdb_xml_parser
*parser
,
458 const struct gdb_xml_element
*element
,
459 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
461 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
462 struct gdb_xml_value
*attr
;
467 field_name
= (char *) xml_find_attribute (attributes
, "name")->value
;
469 attr
= xml_find_attribute (attributes
, "value");
470 ul_value
= * (ULONGEST
*) attr
->value
;
471 if (ul_value
> INT_MAX
)
473 gdb_xml_error (parser
,
474 _("Enum value %s is larger than maximum (%d)"),
475 pulongest (ul_value
), INT_MAX
);
479 tdesc_add_enum_value (data
->current_type
, value
, field_name
);
482 /* Handle the start of a <vector> element. Initialize the type and
483 record it with the current feature. */
486 tdesc_start_vector (struct gdb_xml_parser
*parser
,
487 const struct gdb_xml_element
*element
,
488 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
490 struct tdesc_parsing_data
*data
= (struct tdesc_parsing_data
*) user_data
;
491 struct gdb_xml_value
*attrs
= VEC_address (gdb_xml_value_s
, attributes
);
492 struct tdesc_type
*field_type
;
493 char *id
, *field_type_id
;
496 id
= (char *) attrs
[0].value
;
497 field_type_id
= (char *) attrs
[1].value
;
498 count
= * (ULONGEST
*) attrs
[2].value
;
500 if (count
> MAX_VECTOR_SIZE
)
502 gdb_xml_error (parser
,
503 _("Vector size %s is larger than maximum (%d)"),
504 pulongest (count
), MAX_VECTOR_SIZE
);
507 field_type
= tdesc_named_type (data
->current_feature
, field_type_id
);
508 if (field_type
== NULL
)
509 gdb_xml_error (parser
, _("Vector \"%s\" references undefined type \"%s\""),
512 tdesc_create_vector (data
->current_feature
, id
, field_type
, count
);
515 /* The elements and attributes of an XML target description. */
517 static const struct gdb_xml_attribute field_attributes
[] = {
518 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
519 { "type", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
520 { "start", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
521 { "end", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
522 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
525 static const struct gdb_xml_attribute enum_value_attributes
[] = {
526 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
527 { "value", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
528 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
531 static const struct gdb_xml_element struct_union_children
[] = {
532 { "field", field_attributes
, NULL
, GDB_XML_EF_REPEATABLE
,
533 tdesc_start_field
, NULL
},
534 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
537 static const struct gdb_xml_element enum_children
[] = {
538 { "evalue", enum_value_attributes
, NULL
, GDB_XML_EF_REPEATABLE
,
539 tdesc_start_enum_value
, NULL
},
540 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
543 static const struct gdb_xml_attribute reg_attributes
[] = {
544 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
545 { "bitsize", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
546 { "regnum", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
547 { "type", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
548 { "group", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
549 { "save-restore", GDB_XML_AF_OPTIONAL
,
550 gdb_xml_parse_attr_enum
, gdb_xml_enums_boolean
},
551 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
554 static const struct gdb_xml_attribute struct_union_attributes
[] = {
555 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
556 { "size", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
557 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
560 static const struct gdb_xml_attribute flags_attributes
[] = {
561 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
562 { "size", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
563 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
566 static const struct gdb_xml_attribute enum_attributes
[] = {
567 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
568 { "size", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
569 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
572 static const struct gdb_xml_attribute vector_attributes
[] = {
573 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
574 { "type", GDB_XML_AF_NONE
, NULL
, NULL
},
575 { "count", GDB_XML_AF_NONE
, gdb_xml_parse_attr_ulongest
, NULL
},
576 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
579 static const struct gdb_xml_attribute feature_attributes
[] = {
580 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
581 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
584 static const struct gdb_xml_element feature_children
[] = {
585 { "reg", reg_attributes
, NULL
,
586 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
587 tdesc_start_reg
, NULL
},
588 { "struct", struct_union_attributes
, struct_union_children
,
589 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
590 tdesc_start_struct
, NULL
},
591 { "union", struct_union_attributes
, struct_union_children
,
592 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
593 tdesc_start_union
, NULL
},
594 { "flags", flags_attributes
, struct_union_children
,
595 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
596 tdesc_start_flags
, NULL
},
597 { "enum", enum_attributes
, enum_children
,
598 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
599 tdesc_start_enum
, NULL
},
600 { "vector", vector_attributes
, NULL
,
601 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
602 tdesc_start_vector
, NULL
},
603 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
606 static const struct gdb_xml_attribute target_attributes
[] = {
607 { "version", GDB_XML_AF_NONE
, NULL
, NULL
},
608 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
611 static const struct gdb_xml_element target_children
[] = {
612 { "architecture", NULL
, NULL
, GDB_XML_EF_OPTIONAL
,
613 NULL
, tdesc_end_arch
},
614 { "osabi", NULL
, NULL
, GDB_XML_EF_OPTIONAL
,
615 NULL
, tdesc_end_osabi
},
616 { "compatible", NULL
, NULL
, GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
617 NULL
, tdesc_end_compatible
},
618 { "feature", feature_attributes
, feature_children
,
619 GDB_XML_EF_OPTIONAL
| GDB_XML_EF_REPEATABLE
,
620 tdesc_start_feature
, NULL
},
621 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
624 static const struct gdb_xml_element tdesc_elements
[] = {
625 { "target", target_attributes
, target_children
, GDB_XML_EF_NONE
,
626 tdesc_start_target
, NULL
},
627 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
630 /* Parse DOCUMENT into a target description and return it. */
632 static struct target_desc
*
633 tdesc_parse_xml (const char *document
, xml_fetch_another fetcher
,
636 struct cleanup
*back_to
, *result_cleanup
;
637 struct tdesc_parsing_data data
;
638 struct tdesc_xml_cache
*cache
;
642 /* Expand all XInclude directives. */
643 expanded_text
= xml_process_xincludes (_("target description"),
644 document
, fetcher
, fetcher_baton
, 0);
645 if (expanded_text
== NULL
)
647 warning (_("Could not load XML target description; ignoring"));
651 /* Check for an exact match in the list of descriptions we have
652 previously parsed. strcmp is a slightly inefficient way to
653 do this; an SHA-1 checksum would work as well. */
654 for (ix
= 0; VEC_iterate (tdesc_xml_cache_s
, xml_cache
, ix
, cache
); ix
++)
655 if (strcmp (cache
->xml_document
, expanded_text
) == 0)
657 xfree (expanded_text
);
661 back_to
= make_cleanup (null_cleanup
, NULL
);
663 memset (&data
, 0, sizeof (struct tdesc_parsing_data
));
664 data
.tdesc
= allocate_target_description ();
665 result_cleanup
= make_cleanup_free_target_description (data
.tdesc
);
666 make_cleanup (xfree
, expanded_text
);
668 if (gdb_xml_parse_quick (_("target description"), "gdb-target.dtd",
669 tdesc_elements
, expanded_text
, &data
) == 0)
671 /* Parsed successfully. */
672 struct tdesc_xml_cache new_cache
;
674 new_cache
.xml_document
= expanded_text
;
675 new_cache
.tdesc
= data
.tdesc
;
676 VEC_safe_push (tdesc_xml_cache_s
, xml_cache
, &new_cache
);
677 discard_cleanups (result_cleanup
);
678 do_cleanups (back_to
);
683 warning (_("Could not load XML target description; ignoring"));
684 do_cleanups (back_to
);
688 #endif /* HAVE_LIBEXPAT */
691 /* Read an XML target description from FILENAME. Parse it, and return
692 the parsed description. */
694 const struct target_desc
*
695 file_read_description_xml (const char *filename
)
697 struct target_desc
*tdesc
;
699 struct cleanup
*back_to
;
702 tdesc_str
= xml_fetch_content_from_file (filename
, NULL
);
703 if (tdesc_str
== NULL
)
705 warning (_("Could not open \"%s\""), filename
);
709 back_to
= make_cleanup (xfree
, tdesc_str
);
711 dirname
= ldirname (filename
);
713 make_cleanup (xfree
, dirname
);
715 tdesc
= tdesc_parse_xml (tdesc_str
, xml_fetch_content_from_file
, dirname
);
716 do_cleanups (back_to
);
721 /* Read a string representation of available features from the target,
722 using TARGET_OBJECT_AVAILABLE_FEATURES. The returned string is
723 malloc allocated and NUL-terminated. NAME should be a non-NULL
724 string identifying the XML document we want; the top level document
725 is "target.xml". Other calls may be performed for the DTD or
729 fetch_available_features_from_target (const char *name
, void *baton_
)
731 struct target_ops
*ops
= (struct target_ops
*) baton_
;
733 /* Read this object as a string. This ensures that a NUL
734 terminator is added. */
735 return target_read_stralloc (ops
,
736 TARGET_OBJECT_AVAILABLE_FEATURES
,
741 /* Read an XML target description using OPS. Parse it, and return the
742 parsed description. */
744 const struct target_desc
*
745 target_read_description_xml (struct target_ops
*ops
)
747 struct target_desc
*tdesc
;
749 struct cleanup
*back_to
;
751 tdesc_str
= fetch_available_features_from_target ("target.xml", ops
);
752 if (tdesc_str
== NULL
)
755 back_to
= make_cleanup (xfree
, tdesc_str
);
756 tdesc
= tdesc_parse_xml (tdesc_str
,
757 fetch_available_features_from_target
,
759 do_cleanups (back_to
);
764 /* Fetches an XML target description using OPS, processing
765 includes, but not parsing it. Used to dump whole tdesc
766 as a single XML file. */
769 target_fetch_description_xml (struct target_ops
*ops
)
771 #if !defined(HAVE_LIBEXPAT)
772 static int have_warned
;
777 warning (_("Can not fetch XML target description; XML support was "
778 "disabled at compile time"));
783 struct target_desc
*tdesc
;
786 struct cleanup
*back_to
;
788 tdesc_str
= fetch_available_features_from_target ("target.xml", ops
);
789 if (tdesc_str
== NULL
)
792 back_to
= make_cleanup (xfree
, tdesc_str
);
793 expanded_text
= xml_process_xincludes (_("target description"),
795 fetch_available_features_from_target
, ops
, 0);
796 do_cleanups (back_to
);
797 if (expanded_text
== NULL
)
799 warning (_("Could not load XML target description; ignoring"));
803 return expanded_text
;