/* XML target description support for GDB.
- Copyright (C) 2006-2016 Free Software Foundation, Inc.
+ Copyright (C) 2006-2019 Free Software Foundation, Inc.
Contributed by CodeSourcery.
#include "xml-tdesc.h"
#include "osabi.h"
#include "filenames.h"
+#include <unordered_map>
+#include <string>
/* Maximum sizes.
This is just to catch obviously wrong values. */
then we will create unnecessary duplicate gdbarches. See
gdbarch_list_lookup_by_info. */
-struct tdesc_xml_cache
-{
- const char *xml_document;
- struct target_desc *tdesc;
-};
-typedef struct tdesc_xml_cache tdesc_xml_cache_s;
-DEF_VEC_O(tdesc_xml_cache_s);
-
-static VEC(tdesc_xml_cache_s) *xml_cache;
+static std::unordered_map<std::string, target_desc_up> xml_cache;
/* Callback data for target description parsing. */
int next_regnum;
/* The struct or union we are currently parsing, or last parsed. */
- struct tdesc_type *current_type;
+ tdesc_type_with_fields *current_type;
/* The byte size of the current struct/flags type, if specified. Zero
if not specified. Flags values must specify a size. */
static void
tdesc_start_target (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
- char *version = (char *) xml_find_attribute (attributes, "version")->value;
+ char *version
+ = (char *) xml_find_attribute (attributes, "version")->value.get ();
if (strcmp (version, "1.0") != 0)
gdb_xml_error (parser,
static void
tdesc_start_feature (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- char *name = (char *) xml_find_attribute (attributes, "name")->value;
+ char *name = (char *) xml_find_attribute (attributes, "name")->value.get ();
data->current_feature = tdesc_create_feature (data->tdesc, name);
}
static void
tdesc_start_reg (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes);
- int ix = 0, length;
- char *name, *group, *type;
+ int ix = 0;
+ char *name, *group;
+ const char *type;
int bitsize, regnum, save_restore;
- length = VEC_length (gdb_xml_value_s, attributes);
+ int length = attributes.size ();
- name = (char *) attrs[ix++].value;
- bitsize = * (ULONGEST *) attrs[ix++].value;
+ name = (char *) attributes[ix++].value.get ();
+ bitsize = * (ULONGEST *) attributes[ix++].value.get ();
- if (ix < length && strcmp (attrs[ix].name, "regnum") == 0)
- regnum = * (ULONGEST *) attrs[ix++].value;
+ if (ix < length && strcmp (attributes[ix].name, "regnum") == 0)
+ regnum = * (ULONGEST *) attributes[ix++].value.get ();
else
regnum = data->next_regnum;
- if (ix < length && strcmp (attrs[ix].name, "type") == 0)
- type = (char *) attrs[ix++].value;
+ if (ix < length && strcmp (attributes[ix].name, "type") == 0)
+ type = (char *) attributes[ix++].value.get ();
else
type = "int";
- if (ix < length && strcmp (attrs[ix].name, "group") == 0)
- group = (char *) attrs[ix++].value;
+ if (ix < length && strcmp (attributes[ix].name, "group") == 0)
+ group = (char *) attributes[ix++].value.get ();
else
group = NULL;
- if (ix < length && strcmp (attrs[ix].name, "save-restore") == 0)
- save_restore = * (ULONGEST *) attrs[ix++].value;
+ if (ix < length && strcmp (attributes[ix].name, "save-restore") == 0)
+ save_restore = * (ULONGEST *) attributes[ix++].value.get ();
else
save_restore = 1;
static void
tdesc_start_union (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- char *id = (char *) xml_find_attribute (attributes, "id")->value;
+ char *id = (char *) xml_find_attribute (attributes, "id")->value.get ();
data->current_type = tdesc_create_union (data->current_feature, id);
data->current_type_size = 0;
static void
tdesc_start_struct (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- char *id = (char *) xml_find_attribute (attributes, "id")->value;
- struct tdesc_type *type;
+ char *id = (char *) xml_find_attribute (attributes, "id")->value.get ();
struct gdb_xml_value *attr;
- type = tdesc_create_struct (data->current_feature, id);
- data->current_type = type;
+ tdesc_type_with_fields *type_with_fields
+ = tdesc_create_struct (data->current_feature, id);
+ data->current_type = type_with_fields;
data->current_type_size = 0;
attr = xml_find_attribute (attributes, "size");
if (attr != NULL)
{
- ULONGEST size = * (ULONGEST *) attr->value;
+ ULONGEST size = * (ULONGEST *) attr->value.get ();
if (size > MAX_FIELD_SIZE)
{
_("Struct size %s is larger than maximum (%d)"),
pulongest (size), MAX_FIELD_SIZE);
}
- tdesc_set_struct_size (type, size);
+ tdesc_set_struct_size (type_with_fields, size);
data->current_type_size = size;
}
}
static void
tdesc_start_flags (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- char *id = (char *) xml_find_attribute (attributes, "id")->value;
+ char *id = (char *) xml_find_attribute (attributes, "id")->value.get ();
ULONGEST size = * (ULONGEST *)
- xml_find_attribute (attributes, "size")->value;
- struct tdesc_type *type;
+ xml_find_attribute (attributes, "size")->value.get ();
if (size > MAX_FIELD_SIZE)
{
_("Flags size %s is larger than maximum (%d)"),
pulongest (size), MAX_FIELD_SIZE);
}
- type = tdesc_create_flags (data->current_feature, id, size);
- data->current_type = type;
+ data->current_type = tdesc_create_flags (data->current_feature, id, size);
data->current_type_size = size;
}
static void
tdesc_start_enum (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- char *id = (char *) xml_find_attribute (attributes, "id")->value;
+ char *id = (char *) xml_find_attribute (attributes, "id")->value.get ();
int size = * (ULONGEST *)
- xml_find_attribute (attributes, "size")->value;
- struct tdesc_type *type;
+ xml_find_attribute (attributes, "size")->value.get ();
if (size > MAX_FIELD_SIZE)
{
_("Enum size %s is larger than maximum (%d)"),
pulongest (size), MAX_FIELD_SIZE);
}
- type = tdesc_create_enum (data->current_feature, id, size);
- data->current_type = type;
+ data->current_type = tdesc_create_enum (data->current_feature, id, size);
data->current_type_size = 0;
}
static void
tdesc_start_field (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
struct gdb_xml_value *attr;
char *field_name, *field_type_id;
int start, end;
- field_name = (char *) xml_find_attribute (attributes, "name")->value;
+ field_name = (char *) xml_find_attribute (attributes, "name")->value.get ();
attr = xml_find_attribute (attributes, "type");
if (attr != NULL)
{
- field_type_id = (char *) attr->value;
+ field_type_id = (char *) attr->value.get ();
field_type = tdesc_named_type (data->current_feature, field_type_id);
}
else
attr = xml_find_attribute (attributes, "start");
if (attr != NULL)
{
- ULONGEST ul_start = * (ULONGEST *) attr->value;
+ ULONGEST ul_start = * (ULONGEST *) attr->value.get ();
if (ul_start > MAX_FIELD_BITSIZE)
{
attr = xml_find_attribute (attributes, "end");
if (attr != NULL)
{
- ULONGEST ul_end = * (ULONGEST *) attr->value;
+ ULONGEST ul_end = * (ULONGEST *) attr->value.get ();
if (ul_end > MAX_FIELD_BITSIZE)
{
if (start != -1)
{
- struct tdesc_type *t = data->current_type;
+ tdesc_type_with_fields *t = data->current_type;
/* Older versions of gdb can't handle elided end values.
Stick with that for now, to help ensure backward compatibility.
gdb_xml_error (parser, _("Bitfield \"%s\" has start after end"),
field_name);
if (end >= data->current_type_size * TARGET_CHAR_BIT)
- gdb_xml_error (parser,
- _("Bitfield \"%s\" does not fit in struct"));
+ gdb_xml_error (parser, _("Bitfield \"%s\" does not fit in struct"),
+ field_name);
if (field_type != NULL)
tdesc_add_typed_bitfield (t, field_name, start, end, field_type);
static void
tdesc_start_enum_value (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
struct gdb_xml_value *attr;
ULONGEST ul_value;
int value;
- field_name = (char *) xml_find_attribute (attributes, "name")->value;
+ field_name = (char *) xml_find_attribute (attributes, "name")->value.get ();
attr = xml_find_attribute (attributes, "value");
- ul_value = * (ULONGEST *) attr->value;
+ ul_value = * (ULONGEST *) attr->value.get ();
if (ul_value > INT_MAX)
{
gdb_xml_error (parser,
static void
tdesc_start_vector (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
- void *user_data, VEC(gdb_xml_value_s) *attributes)
+ void *user_data, std::vector<gdb_xml_value> &attributes)
{
struct tdesc_parsing_data *data = (struct tdesc_parsing_data *) user_data;
- struct gdb_xml_value *attrs = VEC_address (gdb_xml_value_s, attributes);
struct tdesc_type *field_type;
char *id, *field_type_id;
ULONGEST count;
- id = (char *) attrs[0].value;
- field_type_id = (char *) attrs[1].value;
- count = * (ULONGEST *) attrs[2].value;
+ id = (char *) attributes[0].value.get ();
+ field_type_id = (char *) attributes[1].value.get ();
+ count = * (ULONGEST *) attributes[2].value.get ();
if (count > MAX_VECTOR_SIZE)
{
tdesc_parse_xml (const char *document, xml_fetch_another fetcher,
void *fetcher_baton)
{
- struct cleanup *back_to, *result_cleanup;
struct tdesc_parsing_data data;
- struct tdesc_xml_cache *cache;
- char *expanded_text;
- int ix;
/* Expand all XInclude directives. */
- expanded_text = xml_process_xincludes (_("target description"),
- document, fetcher, fetcher_baton, 0);
- if (expanded_text == NULL)
+ std::string expanded_text;
+
+ if (!xml_process_xincludes (expanded_text,
+ _("target description"),
+ document, fetcher, fetcher_baton, 0))
{
warning (_("Could not load XML target description; ignoring"));
return NULL;
}
/* Check for an exact match in the list of descriptions we have
- previously parsed. strcmp is a slightly inefficient way to
- do this; an SHA-1 checksum would work as well. */
- for (ix = 0; VEC_iterate (tdesc_xml_cache_s, xml_cache, ix, cache); ix++)
- if (strcmp (cache->xml_document, expanded_text) == 0)
- {
- xfree (expanded_text);
- return cache->tdesc;
- }
-
- back_to = make_cleanup (null_cleanup, NULL);
+ previously parsed. */
+ const auto it = xml_cache.find (expanded_text);
+ if (it != xml_cache.end ())
+ return it->second.get ();
memset (&data, 0, sizeof (struct tdesc_parsing_data));
- data.tdesc = allocate_target_description ();
- result_cleanup = make_cleanup_free_target_description (data.tdesc);
- make_cleanup (xfree, expanded_text);
+ target_desc_up description (allocate_target_description ());
+ data.tdesc = description.get ();
if (gdb_xml_parse_quick (_("target description"), "gdb-target.dtd",
- tdesc_elements, expanded_text, &data) == 0)
+ tdesc_elements, expanded_text.c_str (), &data) == 0)
{
/* Parsed successfully. */
- struct tdesc_xml_cache new_cache;
-
- new_cache.xml_document = expanded_text;
- new_cache.tdesc = data.tdesc;
- VEC_safe_push (tdesc_xml_cache_s, xml_cache, &new_cache);
- discard_cleanups (result_cleanup);
- do_cleanups (back_to);
+ xml_cache.emplace (std::move (expanded_text), std::move (description));
return data.tdesc;
}
else
{
warning (_("Could not load XML target description; ignoring"));
- do_cleanups (back_to);
return NULL;
}
}
const struct target_desc *
file_read_description_xml (const char *filename)
{
- struct target_desc *tdesc;
- char *tdesc_str;
- struct cleanup *back_to;
- char *dirname;
-
- tdesc_str = xml_fetch_content_from_file (filename, NULL);
- if (tdesc_str == NULL)
+ gdb::optional<gdb::char_vector> tdesc_str
+ = xml_fetch_content_from_file (filename, NULL);
+ if (!tdesc_str)
{
warning (_("Could not open \"%s\""), filename);
return NULL;
}
- back_to = make_cleanup (xfree, tdesc_str);
-
- dirname = ldirname (filename);
- if (dirname != NULL)
- make_cleanup (xfree, dirname);
-
- tdesc = tdesc_parse_xml (tdesc_str, xml_fetch_content_from_file, dirname);
- do_cleanups (back_to);
-
- return tdesc;
+ return tdesc_parse_xml (tdesc_str->data (), xml_fetch_content_from_file,
+ (void *) ldirname (filename).c_str ());
}
/* Read a string representation of available features from the target,
is "target.xml". Other calls may be performed for the DTD or
for <xi:include>. */
-static char *
+static gdb::optional<gdb::char_vector>
fetch_available_features_from_target (const char *name, void *baton_)
{
struct target_ops *ops = (struct target_ops *) baton_;
const struct target_desc *
target_read_description_xml (struct target_ops *ops)
{
- struct target_desc *tdesc;
- char *tdesc_str;
- struct cleanup *back_to;
-
- tdesc_str = fetch_available_features_from_target ("target.xml", ops);
- if (tdesc_str == NULL)
+ gdb::optional<gdb::char_vector> tdesc_str
+ = fetch_available_features_from_target ("target.xml", ops);
+ if (!tdesc_str)
return NULL;
- back_to = make_cleanup (xfree, tdesc_str);
- tdesc = tdesc_parse_xml (tdesc_str,
- fetch_available_features_from_target,
- ops);
- do_cleanups (back_to);
-
- return tdesc;
+ return tdesc_parse_xml (tdesc_str->data (),
+ fetch_available_features_from_target,
+ ops);
}
/* Fetches an XML target description using OPS, processing
includes, but not parsing it. Used to dump whole tdesc
as a single XML file. */
-char *
+gdb::optional<std::string>
target_fetch_description_xml (struct target_ops *ops)
{
#if !defined(HAVE_LIBEXPAT)
"disabled at compile time"));
}
- return NULL;
+ return {};
#else
- struct target_desc *tdesc;
- char *tdesc_str;
- char *expanded_text;
- struct cleanup *back_to;
-
- tdesc_str = fetch_available_features_from_target ("target.xml", ops);
- if (tdesc_str == NULL)
- return NULL;
-
- back_to = make_cleanup (xfree, tdesc_str);
- expanded_text = xml_process_xincludes (_("target description"),
- tdesc_str,
- fetch_available_features_from_target, ops, 0);
- do_cleanups (back_to);
- if (expanded_text == NULL)
+ gdb::optional<gdb::char_vector>
+ tdesc_str = fetch_available_features_from_target ("target.xml", ops);
+ if (!tdesc_str)
+ return {};
+
+ std::string output;
+ if (!xml_process_xincludes (output,
+ _("target description"),
+ tdesc_str->data (),
+ fetch_available_features_from_target, ops, 0))
{
warning (_("Could not load XML target description; ignoring"));
- return NULL;
+ return {};
}
-
- return expanded_text;
+ return output;
#endif
}
+
+/* See xml-tdesc.h. */
+
+const struct target_desc *
+string_read_description_xml (const char *xml)
+{
+ return tdesc_parse_xml (xml, [] (const char *href, void *baton)
+ {
+ error (_("xincludes are unsupported with this method"));
+ return gdb::optional<gdb::char_vector> ();
+ }, nullptr);
+}
projects / deliverable / binutils-gdb.git / blobdiff