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-rw-r--r--target-xtensa/helper.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/target-xtensa/helper.c b/target-xtensa/helper.c
index e3098798af..a0f9993b2d 100644
--- a/target-xtensa/helper.c
+++ b/target-xtensa/helper.c
@@ -37,10 +37,18 @@ static struct XtensaConfigList *xtensa_cores;
 
 static void xtensa_core_class_init(ObjectClass *oc, void *data)
 {
+    CPUClass *cc = CPU_CLASS(oc);
     XtensaCPUClass *xcc = XTENSA_CPU_CLASS(oc);
     const XtensaConfig *config = data;
 
     xcc->config = config;
+
+    /* Use num_core_regs to see only non-privileged registers in an unmodified
+     * gdb. Use num_regs to see all registers. gdb modification is required
+     * for that: reset bit 0 in the 'flags' field of the registers definitions
+     * in the gdb/xtensa-config.c inside gdb source tree or inside gdb overlay.
+     */
+    cc->gdb_num_core_regs = config->gdb_regmap.num_regs;
 }
 
 void xtensa_register_core(XtensaConfigList *node)