Initial Esp32c3 Support (#5060)

tools/sdk/esp32c3/include/esp_gdbstub/riscv/esp_gdbstub_arch.h

@@ -0,0 +1,34 @@
+// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#include <stdint.h>
+#include "riscv/rvruntime-frames.h"
+#include "gdbstub_target_config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef RvExcFrame esp_gdbstub_frame_t;
+
+/* GDB regfile structure, configuration dependent */
+typedef struct {
+    uint32_t x[32];
+    uint32_t pc;
+} esp_gdbstub_gdb_regfile_t;
+
+#ifdef __cplusplus
+}
+#endif