[RFC PATCH 04/24] gdbstub: Introduce gdb_find_static_feature()

[Akihiko Odaki]

This function is useful to determine the number of registers exposed to
GDB from the XML name.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 include/exec/gdbstub.h |  2 ++
 gdbstub/gdbstub.c      | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h
index 22e5add5b1..3115dc21c0 100644
--- a/include/exec/gdbstub.h
+++ b/include/exec/gdbstub.h
@@ -34,6 +34,8 @@ void gdb_register_coprocessor(CPUState *cpu,
  */
 int gdbserver_start(const char *port_or_device);
 
+const GDBFeature *gdb_find_static_feature(const char *xmlname);
+
 void gdb_set_stop_cpu(CPUState *cpu);
 
 /**
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index fad70200d8..6d9cef5b95 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -414,6 +414,19 @@ static const char *get_feature_xml(const char *p, const 
char **newp,
     return name ? gdb_features[i].xml : NULL;
 }
 
+const GDBFeature *gdb_find_static_feature(const char *xmlname)
+{
+    const GDBFeature *feature;
+
+    for (feature = gdb_features; feature->xmlname; feature++) {
+        if (!strcmp(feature->xmlname, xmlname)) {
+            return feature;
+        }
+    }
+
+    return NULL;
+}
+
 static int gdb_read_register(CPUState *cpu, GByteArray *buf, int reg)
 {
     CPUClass *cc = CPU_GET_CLASS(cpu);
-- 
2.41.0