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-rw-r--r--gdb/memory-map.c267
1 files changed, 98 insertions, 169 deletions
diff --git a/gdb/memory-map.c b/gdb/memory-map.c
index db4c22f..b9323f7 100644
--- a/gdb/memory-map.c
+++ b/gdb/memory-map.c
@@ -48,168 +48,87 @@ parse_memory_map (const char *memory_map)
#include "xml-support.h"
-#include "gdb_expat.h"
-
-/* Internal parsing data passed to all Expat callbacks. */
+/* Internal parsing data passed to all XML callbacks. */
struct memory_map_parsing_data
{
VEC(mem_region_s) **memory_map;
- struct mem_region *currently_parsing;
- char *character_data;
- const char *property_name;
- int capture_text;
+ char property_name[32];
};
+/* Handle the start of a <memory> element. */
+
static void
-free_memory_map_parsing_data (void *p_)
+memory_map_start_memory (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, VEC(gdb_xml_value_s) *attributes)
{
- struct memory_map_parsing_data *p = p_;
-
- xfree (p->character_data);
+ struct memory_map_parsing_data *data = user_data;
+ struct mem_region *r = VEC_safe_push (mem_region_s, *data->memory_map, NULL);
+ ULONGEST *start_p, *length_p, *type_p;
+
+ start_p = VEC_index (gdb_xml_value_s, attributes, 0)->value;
+ length_p = VEC_index (gdb_xml_value_s, attributes, 1)->value;
+ type_p = VEC_index (gdb_xml_value_s, attributes, 2)->value;
+
+ mem_region_init (r);
+ r->lo = *start_p;
+ r->hi = r->lo + *length_p;
+ r->attrib.mode = *type_p;
+ r->attrib.blocksize = -1;
}
-/* Callback called by Expat on start of element.
- DATA_ is pointer to memory_map_parsing_data
- NAME is the name of element
- ATTRS is the zero-terminated array of attribute names and
- attribute values.
-
- This function handles the following elements:
- - 'memory' -- creates a new memory region and initializes it
- from attributes. Sets DATA_.currently_parsing to the new region.
- - 'properties' -- sets DATA.capture_text. */
+/* Handle the end of a <memory> element. Verify that any necessary
+ children were present. */
static void
-memory_map_start_element (void *data_, const XML_Char *name,
- const XML_Char **attrs)
+memory_map_end_memory (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, const char *body_text)
{
- static const XML_Char *type_names[] = {"ram", "rom", "flash", 0};
- static int type_values[] = { MEM_RW, MEM_RO, MEM_FLASH };
- struct memory_map_parsing_data *data = data_;
- struct gdb_exception ex;
+ struct memory_map_parsing_data *data = user_data;
+ struct mem_region *r = VEC_last (mem_region_s, *data->memory_map);
- TRY_CATCH (ex, RETURN_MASK_ERROR)
- {
- if (strcmp (name, "memory") == 0)
- {
- struct mem_region *r;
-
- r = VEC_safe_push (mem_region_s, *data->memory_map, NULL);
- mem_region_init (r);
-
- r->lo = xml_get_integer_attribute (attrs, "start");
- r->hi = r->lo + xml_get_integer_attribute (attrs, "length");
- r->attrib.mode = xml_get_enum_value (attrs, "type", type_names,
- type_values);
- r->attrib.blocksize = -1;
-
- data->currently_parsing = r;
- }
- else if (strcmp (name, "property") == 0)
- {
- if (!data->currently_parsing)
- throw_error (XML_PARSE_ERROR,
- _("memory map: found 'property' element outside 'memory'"));
-
- data->capture_text = 1;
-
- data->property_name = xml_get_required_attribute (attrs, "name");
- }
- }
- if (ex.reason < 0)
- throw_error
- (ex.error, _("While parsing element %s:\n%s"), name, ex.message);
+ if (r->attrib.mode == MEM_FLASH && r->attrib.blocksize == -1)
+ gdb_xml_error (parser, _("Flash block size is not set"));
}
-/* Callback called by Expat on start of element. DATA_ is a pointer
- to our memory_map_parsing_data. NAME is the name of the element.
-
- This function handles the following elements:
- - 'property' -- check that the property name is 'blocksize' and
- sets DATA->currently_parsing->attrib.blocksize
- - 'memory' verifies that flash block size is set. */
+/* Handle the start of a <property> element by saving the name
+ attribute for later. */
static void
-memory_map_end_element (void *data_, const XML_Char *name)
+memory_map_start_property (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, VEC(gdb_xml_value_s) *attributes)
{
- struct memory_map_parsing_data *data = data_;
- struct gdb_exception ex;
+ struct memory_map_parsing_data *data = user_data;
+ char *name;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
- {
- if (strcmp (name, "property") == 0)
- {
- if (strcmp (data->property_name, "blocksize") == 0)
- {
- char *end = NULL;
-
- if (!data->character_data)
- throw_error (XML_PARSE_ERROR,
- _("Empty content of 'property' element"));
- data->currently_parsing->attrib.blocksize
- = strtoul (data->character_data, &end, 0);
- if (*end != '\0')
- throw_error (XML_PARSE_ERROR,
- _("Invalid content of the 'blocksize' property"));
- }
- else
- throw_error (XML_PARSE_ERROR,
- _("Unknown memory region property: %s"), name);
-
- data->capture_text = 0;
- }
- else if (strcmp (name, "memory") == 0)
- {
- if (data->currently_parsing->attrib.mode == MEM_FLASH
- && data->currently_parsing->attrib.blocksize == -1)
- throw_error (XML_PARSE_ERROR,
- _("Flash block size is not set"));
-
- data->currently_parsing = 0;
- data->character_data = 0;
- }
- }
- if (ex.reason < 0)
- throw_error
- (ex.error, _("while parsing element %s: \n%s"), name, ex.message);
+ name = VEC_index (gdb_xml_value_s, attributes, 0)->value;
+ snprintf (data->property_name, sizeof (data->property_name), "%s", name);
}
-/* Callback called by expat for all character data blocks.
- DATA_ is the pointer to memory_map_parsing_data.
- S is the point to character data.
- LEN is the length of data; the data is not zero-terminated.
+/* Handle the end of a <property> element and its value. */
- If DATA_->CAPTURE_TEXT is 1, appends this block of characters
- to DATA_->CHARACTER_DATA. */
static void
-memory_map_character_data (void *data_, const XML_Char *s,
- int len)
+memory_map_end_property (struct gdb_xml_parser *parser,
+ const struct gdb_xml_element *element,
+ void *user_data, const char *body_text)
{
- struct memory_map_parsing_data *data = data_;
- int current_size = 0;
-
- if (!data->capture_text)
- return;
+ struct memory_map_parsing_data *data = user_data;
+ char *name = data->property_name;
- /* Expat interface does not guarantee that a single call to
- a handler will be made. Actually, one call for each line
- will be made, and character data can possibly span several
- lines.
-
- Take care to realloc the data if needed. */
- if (!data->character_data)
- data->character_data = xmalloc (len + 1);
- else
+ if (strcmp (name, "blocksize") == 0)
{
- current_size = strlen (data->character_data);
- data->character_data = xrealloc (data->character_data,
- current_size + len + 1);
- }
+ struct mem_region *r = VEC_last (mem_region_s, *data->memory_map);
- memcpy (data->character_data + current_size, s, len);
- data->character_data[current_size + len] = '\0';
+ r->attrib.blocksize = gdb_xml_parse_ulongest (parser, body_text);
+ }
+ else
+ gdb_xml_debug (parser, _("Unknown property \"%s\""), name);
}
+/* Discard the constructed memory map (if an error occurs). */
+
static void
clear_result (void *p)
{
@@ -218,56 +137,66 @@ clear_result (void *p)
*result = NULL;
}
+/* The allowed elements and attributes for an XML memory map. */
+
+const struct gdb_xml_attribute property_attributes[] = {
+ { "name", GDB_XML_AF_NONE, NULL, NULL },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element memory_children[] = {
+ { "property", property_attributes, NULL,
+ GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
+ memory_map_start_property, memory_map_end_property },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_enum memory_type_enum[] = {
+ { "ram", MEM_RW },
+ { "rom", MEM_RO },
+ { "flash", MEM_FLASH },
+ { NULL, 0 }
+};
+
+const struct gdb_xml_attribute memory_attributes[] = {
+ { "start", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "length", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
+ { "type", GDB_XML_AF_NONE, gdb_xml_parse_attr_enum, &memory_type_enum },
+ { NULL, GDB_XML_AF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element memory_map_children[] = {
+ { "memory", memory_attributes, memory_children, GDB_XML_EF_REPEATABLE,
+ memory_map_start_memory, memory_map_end_memory },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
+const struct gdb_xml_element memory_map_elements[] = {
+ { "memory-map", NULL, memory_map_children, GDB_XML_EF_NONE,
+ NULL, NULL },
+ { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
+};
+
VEC(mem_region_s) *
parse_memory_map (const char *memory_map)
{
+ struct gdb_xml_parser *parser;
VEC(mem_region_s) *result = NULL;
- struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
- struct cleanup *before_deleting_result;
- struct cleanup *saved;
- volatile struct gdb_exception ex;
- int ok = 0;
-
+ struct cleanup *before_deleting_result, *back_to;
struct memory_map_parsing_data data = {};
- XML_Parser parser = XML_ParserCreateNS (NULL, '!');
- if (parser == NULL)
- goto out;
+ back_to = make_cleanup (null_cleanup, NULL);
+ parser = gdb_xml_create_parser_and_cleanup (_("target memory map"),
+ memory_map_elements, &data);
- make_cleanup_free_xml_parser (parser);
- make_cleanup (free_memory_map_parsing_data, &data);
/* Note: 'clear_result' will zero 'result'. */
before_deleting_result = make_cleanup (clear_result, &result);
-
- XML_SetElementHandler (parser, memory_map_start_element,
- memory_map_end_element);
- XML_SetCharacterDataHandler (parser, memory_map_character_data);
- XML_SetUserData (parser, &data);
data.memory_map = &result;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
- {
- if (XML_Parse (parser, memory_map, strlen (memory_map), 1)
- != XML_STATUS_OK)
- {
- enum XML_Error err = XML_GetErrorCode (parser);
-
- throw_error (XML_PARSE_ERROR, "%s", XML_ErrorString (err));
- }
- }
- if (ex.reason != GDB_NO_ERROR)
- {
- if (ex.error == XML_PARSE_ERROR)
- /* Just report it. */
- warning (_("Could not parse XML memory map: %s"), ex.message);
- else
- throw_exception (ex);
- }
- else
+ if (gdb_xml_parse (parser, memory_map) == 0)
/* Parsed successfully, don't need to delete the result. */
discard_cleanups (before_deleting_result);
- out:
do_cleanups (back_to);
return result;
}