subsys/debug: relocate gdbstub stuff into its folder

Move the gdbstub files into the gdbstub folder, and relocated
its Kconfig as well.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>

subsys/debug/CMakeLists.txt

@@ -20,14 +20,9 @@ add_subdirectory_ifdef(
   coredump
   )
 
-zephyr_sources_ifdef(
+add_subdirectory_ifdef(
   CONFIG_GDBSTUB
-  gdbstub.c
-  )
-
-zephyr_sources_ifdef(
-  CONFIG_GDBSTUB_SERIAL_BACKEND
-  gdbstub/gdbstub_backend_serial.c
+  gdbstub
   )
 
 zephyr_sources_ifdef(

subsys/debug/Kconfig

@@ -422,48 +422,7 @@ config DEBUG_THREAD_INFO
 rsource "coredump/Kconfig"
 endmenu
 
-config GDBSTUB
-	bool "GDB remote serial protocol support [EXPERIMENTAL]"
-	depends on ARCH_HAS_GDBSTUB
-	select UART_USE_RUNTIME_CONFIGURE
-	select EXPERIMENTAL
-	help
-	  This option enable support the target using GDB, or any other
-	  application that supports GDB protocol.
-
-if GDBSTUB
-
-choice
-	prompt "GDB backend"
-
-config GDBSTUB_SERIAL_BACKEND
-	bool "Use serial backend"
-	depends on SERIAL
-	help
-	  Use serial as backend for GDB
-
-config GDBSTUB_CUSTOM_BACKEND
-	bool "Use a custom backend"
-	help
-	  Use a custom backend for GDB
-
-endchoice
-
-config GDBSTUB_BUF_SZ
-	int "GDB backend send/receive buffer size (in bytes)"
-	default 256
-	help
-	  This specifies the size (in bytes) of the send/receive buffer
-	  for GDB backend. This needs to be big enough to hold one
-	  full GDB packet at a time.
-
-config GDBSTUB_TRACE
-	bool "GDB backend extra logging"
-	help
-	  Enable extra debug logging for the GDB backend, including
-	  breakpoint interrupts and remote commands it receives.
-
-endif
+rsource "gdbstub/Kconfig"
 
 config SEGGER_DEBUGMON
 	bool "Use Segger's J-Link debug monitor implementation"

subsys/debug/gdbstub/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (c) 2020 Intel Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_sources(
+  gdbstub.c
+  )
+
+zephyr_sources_ifdef(
+  CONFIG_GDBSTUB_SERIAL_BACKEND
+  gdbstub_backend_serial.c
+  )

subsys/debug/gdbstub/Kconfig

@@ -0,0 +1,45 @@
+# Copyright (c) 2020 Intel Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+menuconfig GDBSTUB
+	bool "GDB remote serial protocol support [EXPERIMENTAL]"
+	depends on ARCH_HAS_GDBSTUB
+	select UART_USE_RUNTIME_CONFIGURE
+	select EXPERIMENTAL
+	help
+	  This option enable support the target using GDB, or any other
+	  application that supports GDB protocol.
+
+if GDBSTUB
+
+choice
+	prompt "GDB backend"
+
+config GDBSTUB_SERIAL_BACKEND
+	bool "Use serial backend"
+	depends on SERIAL
+	help
+	  Use serial as backend for GDB
+
+config GDBSTUB_CUSTOM_BACKEND
+	bool "Use a custom backend"
+	help
+	  Use a custom backend for GDB
+
+endchoice
+
+config GDBSTUB_BUF_SZ
+	int "GDB backend send/receive buffer size (in bytes)"
+	default 256
+	help
+	  This specifies the size (in bytes) of the send/receive buffer
+	  for GDB backend. This needs to be big enough to hold one
+	  full GDB packet at a time.
+
+config GDBSTUB_TRACE
+	bool "GDB backend extra logging"
+	help
+	  Enable extra debug logging for the GDB backend, including
+	  breakpoint interrupts and remote commands it receives.
+
+endif # GDBSTUB