modules: build segger debugmon code with config

Updated segger module CMake to build code added by
https://github.com/zephyrproject-rtos/segger/pull/14 when relevant
config is provided.

Signed-off-by: Piotr Jasiński <piotr.jasinski@nordicsemi.no>

modules/segger/CMakeLists.txt

@@ -1,15 +1,29 @@
 if(CONFIG_USE_SEGGER_RTT)
-
   zephyr_library()
   set(SEGGER_DIR ${ZEPHYR_CURRENT_MODULE_DIR})
   zephyr_include_directories_ifdef(CONFIG_USE_SEGGER_RTT
     ${SEGGER_DIR}/SEGGER
     ${SEGGER_DIR}/Config
     .
-    )
+  )
   zephyr_library_sources(
     ${SEGGER_DIR}/SEGGER/SEGGER_RTT.c
     SEGGER_RTT_zephyr.c
-    )
+  )
   zephyr_library_sources_ifdef(CONFIG_SEGGER_SYSTEMVIEW ${SEGGER_DIR}/SEGGER/SEGGER_SYSVIEW.c)
 endif()
+
+if(CONFIG_SEGGER_DEBUGMON)
+  if(!CONFIG_USE_SEGGER_RTT)
+    zephyr_library()
+  endif()
+
+  set(SEGGER_DIR ${ZEPHYR_CURRENT_MODULE_DIR})
+  zephyr_include_directories_ifdef(CONFIG_SEGGER_DEBUGMON
+    ${SEGGER_DIR}/SEGGER/DebugMon/include
+  )
+  zephyr_library_sources(
+    ${SEGGER_DIR}/SEGGER/DebugMon/JLINK_MONITOR.c
+    ${SEGGER_DIR}/SEGGER/DebugMon/JLINK_MONITOR_ISR_SES.s
+  )
+endif()

subsys/debug/Kconfig

@@ -421,3 +421,11 @@ config GDBSTUB_BUF_SZ
 	  full GDB packet at a time.
 
 endif
+
+config SEGGER_DEBUGMON
+	bool "Use Segger's J-Link debug monitor implementation"
+	depends on CORTEX_M_DEBUG_MONITOR_HOOK
+	help
+	  This option will enable Segger's implementation of
+	  the debug monitor interrupt, overriding the
+	  default z_arm_debug_monitor symbol.

west.yml

@@ -209,7 +209,7 @@ manifest:
       path: modules/lib/picolibc
       revision: 04ada5951cbaf8e7b17f8226ce31cb6837c28ba7
     - name: segger
-      revision: d4e568a920b4bd087886170a5624c167b2d0665e
+      revision: e2ff2200556e8a8f962921444275c04971a2bb3d
       path: modules/debug/segger
       groups:
         - debug