gdbstub: Add members to identify registers to GDBFeature

These members will be used to help plugins to identify registers.
The added members in instances of GDBFeature dynamically generated by
CPUs will be filled in later changes.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20231213-gdb-v17-10-777047380591@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-15-alex.bennee@linaro.org>

1 files changed, 9 insertions, 3 deletions

diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index f766ee277a..a55b5e6581 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -419,9 +419,10 @@ void gdb_feature_builder_init(GDBFeatureBuilder *builder, GDBFeature *feature,
     builder->feature = feature;
     builder->xml = g_ptr_array_new();
     g_ptr_array_add(builder->xml, header);
+    builder->regs = g_ptr_array_new();
     builder->base_reg = base_reg;
     feature->xmlname = xmlname;
-    feature->num_regs = 0;
+    feature->name = name;
 }
 
 void gdb_feature_builder_append_tag(const GDBFeatureBuilder *builder,
@@ -440,10 +441,12 @@ void gdb_feature_builder_append_reg(const GDBFeatureBuilder *builder,
                                     const char *type,
                                     const char *group)
 {
-    if (builder->feature->num_regs < regnum) {
-        builder->feature->num_regs = regnum;
+    if (builder->regs->len <= regnum) {
+        g_ptr_array_set_size(builder->regs, regnum + 1);
     }
 
+    builder->regs->pdata[regnum] = (gpointer *)name;
+
     if (group) {
         gdb_feature_builder_append_tag(
             builder,
@@ -469,6 +472,9 @@ void gdb_feature_builder_end(const GDBFeatureBuilder *builder)
     }
 
     g_ptr_array_free(builder->xml, TRUE);
+
+    builder->feature->num_regs = builder->regs->len;
+    builder->feature->regs = (void *)g_ptr_array_free(builder->regs, FALSE);
 }
 
 const GDBFeature *gdb_find_static_feature(const char *xmlname)