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/* Routines for handling XML memory maps provided by target.
Copyright (C) 2006-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "memory-map.h"
#if !defined(HAVE_LIBEXPAT)
std::vector<mem_region>
parse_memory_map (const char *memory_map)
{
static int have_warned;
if (!have_warned)
{
have_warned = 1;
warning (_("Can not parse XML memory map; XML support was disabled "
"at compile time"));
}
return std::vector<mem_region> ();
}
#else /* HAVE_LIBEXPAT */
#include "xml-support.h"
/* Internal parsing data passed to all XML callbacks. */
struct memory_map_parsing_data
{
memory_map_parsing_data (std::vector<mem_region> *memory_map_)
: memory_map (memory_map_)
{}
std::vector<mem_region> *memory_map;
std::string property_name;
};
/* Handle the start of a <memory> element. */
static void
memory_map_start_memory (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data,
std::vector<gdb_xml_value> &attributes)
{
struct memory_map_parsing_data *data
= (struct memory_map_parsing_data *) user_data;
ULONGEST *start_p, *length_p, *type_p;
start_p
= (ULONGEST *) xml_find_attribute (attributes, "start")->value.get ();
length_p
= (ULONGEST *) xml_find_attribute (attributes, "length")->value.get ();
type_p
= (ULONGEST *) xml_find_attribute (attributes, "type")->value.get ();
data->memory_map->emplace_back (*start_p, *start_p + *length_p,
(enum mem_access_mode) *type_p);
}
/* Handle the end of a <memory> element. Verify that any necessary
children were present. */
static void
memory_map_end_memory (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data, const char *body_text)
{
struct memory_map_parsing_data *data
= (struct memory_map_parsing_data *) user_data;
const mem_region &r = data->memory_map->back ();
if (r.attrib.mode == MEM_FLASH && r.attrib.blocksize == -1)
gdb_xml_error (parser, _("Flash block size is not set"));
}
/* Handle the start of a <property> element by saving the name
attribute for later. */
static void
memory_map_start_property (struct gdb_xml_parser *parser,
const struct gdb_xml_element *element,
void *user_data,
std::vector<gdb_xml_value> &attributes)
{
struct memory_map_parsing_data *data
= (struct memory_map_parsing_data *) user_data;
char *name;
name = (char *) xml_find_attribute (attributes, "name")->value.get ();
data->property_name.assign (name);
}
/* Handle the end of a <property> element and its value. */
static void
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
= (struct memory_map_parsing_data *) user_data;
if (data->property_name == "blocksize")
{
mem_region &r = data->memory_map->back ();
r.attrib.blocksize = gdb_xml_parse_ulongest (parser, body_text);
}
else
gdb_xml_debug (parser, _("Unknown property \"%s\""),
data->property_name.c_str ());
}
/* 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 }
};
std::vector<mem_region>
parse_memory_map (const char *memory_map)
{
std::vector<mem_region> ret;
memory_map_parsing_data data (&ret);
if (gdb_xml_parse_quick (_("target memory map"), NULL, memory_map_elements,
memory_map, &data) == 0)
{
/* Parsed successfully, keep the result. */
return ret;
}
return std::vector<mem_region> ();
}
#endif /* HAVE_LIBEXPAT */
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