From 54e75f291ef10f2ccb0549b25e0d9d207b325c79 Mon Sep 17 00:00:00 2001
From: Andrew Burgess <andrew.burgess@embecosm.com>
Date: Tue, 1 Dec 2020 11:07:12 +0000
Subject: gdbsupport/tdesc: print enum fields using 'evalue' syntax

Currently when printing an XML description GDB prints enum values like
this:

  <enum id="levels_type" size="4">
    <field name="low" start="0"/>
    <field name="high" start="1"/>
  </enum>

This is incorrect, and is most likely a copy and paste error with the
struct and flags printing code.  The correct syntax is:

  <enum id="levels_type" size="4">
    <evalue name="low" value="0"/>
    <evalue name="high" value="1"/>
  </enum>

A test is included to cover this functionality.

gdb/testsuite/ChangeLog:

	* gdb.xml/maint-xml-dump-03.xml: New file.

gdbsupport/ChangeLog:

	* tdesc.cc (print_xml_feature::visit): Print enum fields using
	'evalue' syntax.
---
 gdbsupport/ChangeLog | 5 +++++
 gdbsupport/tdesc.cc  | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)

(limited to 'gdbsupport')

diff --git a/gdbsupport/ChangeLog b/gdbsupport/ChangeLog
index a77f1c9..88a0413 100644
--- a/gdbsupport/ChangeLog
+++ b/gdbsupport/ChangeLog
@@ -1,3 +1,8 @@
+2020-12-01  Andrew Burgess  <andrew.burgess@embecosm.com>
+
+	* tdesc.cc (print_xml_feature::visit): Print enum fields using
+	'evalue' syntax.
+
 2020-12-01  Chungyi Chi  <demonic@csie.io>
 
 	* tdesc.cc (print_xml_feature::visit): Print enum size attribute.
diff --git a/gdbsupport/tdesc.cc b/gdbsupport/tdesc.cc
index 2bc0247..c062a77 100644
--- a/gdbsupport/tdesc.cc
+++ b/gdbsupport/tdesc.cc
@@ -355,8 +355,10 @@ void print_xml_feature::visit (const tdesc_type_with_fields *t)
 	string_appendf (tmp, " size=\"%d\"", t->size);
       string_appendf (tmp, ">");
       add_line (tmp);
+      /* The 'start' of the field is reused as the enum value.  The 'end'
+	 of the field is always set to -1 for enum values.  */
       for (const tdesc_type_field &f : t->fields)
-	add_line ("  <field name=\"%s\" start=\"%d\"/>",
+	add_line ("  <evalue name=\"%s\" value=\"%d\"/>",
 		  f.name.c_str (), f.start);
       break;
 
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