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authorDaniel Jacobowitz <drow@false.org>2006-09-21 13:54:03 +0000
committerDaniel Jacobowitz <drow@false.org>2006-09-21 13:54:03 +0000
commitfd79eceebf094938376c671ea3538a31d4f63eac (patch)
tree40bfd6dc3f8a1035a4eedb63f57460ebf033284a /gdb/xml-support.c
parent253c8abb67a72cdfcdb2be4b92e2dba8689e6554 (diff)
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2006-09-21 Vladimir Prus <vladimir@codesourcery.com> Daniel Jacobowitz <dan@codesourcery.com> Nathan Sidwell <nathan@codesourcery.com> * Makefile.in (SFILES): Add memory-map.c and xml-support.c. (memory_map_h, xml_support_h): New. (target_h): Add vec_h dependency. (COMMON_OBS): Add memory-map.o and xml-support.o. (memory-map.o, xml-support.o): New rules. (remote.o): Update. * exceptions.h (enum errors): Add XML_PARSE_ERROR. * infcmd.c (run_command_1, attach_command): Call target_pre_inferior. * memattr.c (default_mem_attrib): Initialize blocksize. (target_mem_region_list, mem_use_target) (target_mem_regions_valid, mem_region_cmp, mem_region_init) (require_user_regions, require_target_regions) (invalidate_target_mem_regions): New. (create_mem_region): Use mem_region_init. (mem_clear): Move higher. (lookup_mem_region): Use require_target_regions. (mem_command): Implement "mem auto". (mem_info_command): Handle target-supplied regions and flash attributes. (mem_enable_command, mem_disable_command, mem_delete_command): Use require_user_regions. (_initialize_mem): Mention "mem auto" in help. * memattr.h (enum mem_access_mode): Add MEM_FLASH. (struct mem_attrib): Add blocksize. (invalidate_target_mem_regions, mem_region_init, mem_region_cmp): New prototypes. * remote.c: Include "memory-map.h". (PACKET_qXfer_memory_map): New enum value. (remote_protocol_features): Add qXfer:memory-map:read. (remote_xfer_partial): Handle memory maps. (remote_memory_map): New. (init_remote_ops, init_remote_async_ops): Set to_memory_map. (_initialize_remote): Register qXfer:memory-map:read. * target.c (update_current_target): Mention to_memory_map. (target_memory_map, target_pre_inferior): New. (target_preopen): Call target_pre_inferior. * target.h: Include "vec.h". (enum target_object): Add TARGET_OBJECT_MEMORY_MAP. (struct target_ops): Add to_memory_map. (target_memory_map, target_pre_inferior): New prototypes. * memory-map.c, memory-map.h, xml-support.c, xml-support.h: New files. gdb/doc/ 2006-09-21 Vladimir Prus <vladimir@codesourcery.com> Daniel Jacobowitz <dan@codesourcery.com> * gdb.texinfo (Memory Region Attributes): Mention target-supplied memory regions and "mem auto".
Diffstat (limited to 'gdb/xml-support.c')
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diff --git a/gdb/xml-support.c b/gdb/xml-support.c
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+/* Helper routines for parsing XML using Expat.
+
+ Copyright (C) 2006
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "defs.h"
+
+/* The contents of this file are only useful if XML support is
+ available. */
+#ifdef HAVE_LIBEXPAT
+
+#include "exceptions.h"
+#include "xml-support.h"
+
+#include <expat.h>
+
+#include "gdb_string.h"
+
+/* Returns the value of attribute ATTR from expat attribute list
+ ATTRLIST. If not found, throws an exception. */
+
+const XML_Char *
+xml_get_required_attribute (const XML_Char **attrs,
+ const XML_Char *attr)
+{
+ const XML_Char **p;
+ for (p = attrs; *p; p += 2)
+ {
+ const char *name = p[0];
+ const char *val = p[1];
+
+ if (strcmp (name, attr) == 0)
+ return val;
+ }
+ throw_error (XML_PARSE_ERROR, _("Can't find attribute %s"), attr);
+}
+
+/* Parse a field VALSTR that we expect to contain an integer value.
+ The integer is returned in *VALP. The string is parsed with an
+ equivalent to strtoul.
+
+ Returns 0 for success, -1 for error. */
+
+static int
+xml_parse_unsigned_integer (const char *valstr, ULONGEST *valp)
+{
+ const char *endptr;
+ ULONGEST result;
+
+ if (*valstr == '\0')
+ return -1;
+
+ result = strtoulst (valstr, &endptr, 0);
+ if (*endptr != '\0')
+ return -1;
+
+ *valp = result;
+ return 0;
+}
+
+/* Gets the value of an integer attribute named ATTR, if it's present.
+ If the attribute is not found, or can't be parsed as integer,
+ throws an exception. */
+
+ULONGEST
+xml_get_integer_attribute (const XML_Char **attrs,
+ const XML_Char *attr)
+{
+ ULONGEST result;
+ const XML_Char *value = xml_get_required_attribute (attrs, attr);
+
+ if (xml_parse_unsigned_integer (value, &result) != 0)
+ {
+ throw_error (XML_PARSE_ERROR,
+ _("Can't convert value of attribute %s, %s, to integer"),
+ attr, value);
+ }
+ return result;
+}
+
+/* Obtains a value of attribute with enumerated type. In XML, enumerated
+ attributes have string as a value, and in C, they are represented as
+ values of enumerated type. This function maps the attribute onto
+ an integer value that can be immediately converted into enumerated
+ type.
+
+ First, obtains the string value of ATTR in ATTRS.
+ Then, finds the index of that value in XML_NAMES, which is a zero-terminated
+ array of strings. If found, returns the element of VALUES with that index.
+ Otherwise throws. */
+
+int
+xml_get_enum_value (const XML_Char **attrs,
+ const XML_Char *attr,
+ const XML_Char **xml_names,
+ int *values)
+{
+ const XML_Char *value = xml_get_required_attribute (attrs, attr);
+
+ int i;
+ for (i = 0; xml_names[i]; ++i)
+ {
+ if (strcmp (xml_names[i], value) == 0)
+ return values[i];
+ }
+ throw_error (XML_PARSE_ERROR,
+ _("Invalid enumerated value in XML: %s"), value);
+}
+
+/* Cleanup wrapper for XML_ParserFree, with the correct type
+ for make_cleanup. */
+
+static void
+free_xml_parser (void *parser)
+{
+ XML_ParserFree (parser);
+}
+
+/* Register a cleanup to release PARSER. Only the parser itself
+ is freed; another cleanup may be necessary to discard any
+ associated user data. */
+
+void
+make_cleanup_free_xml_parser (XML_Parser parser)
+{
+ make_cleanup (free_xml_parser, parser);
+}
+
+#endif /* HAVE_LIBEXPAT */