CMake: Add a function to generate executable artifacts with memap (#13695)

- Add linker option to generate map file for GCC_ARM and ARM toolchain
- Add mbed_generate_map_file function to call memap.py (parse the map
file).
- Add mbed_generate_executable function to generate executable artifacts with a memory map table

Author: rajkan01

CMakeLists.txt

@@ -167,3 +167,28 @@ function(mbed_generate_bin_hex target)
         VERBATIM
     )
 endfunction()
+
+#
+# Parse toolchain generated map file of `target` and display a readable table format.
+#
+function(mbed_generate_map_file target)
+     find_package (Python3)
+     add_custom_command(
+         TARGET
+             ${target}
+         POST_BUILD
+             COMMAND ${Python3_EXECUTABLE} ${MBED_ROOT}/tools/memap.py -t ${MBED_TOOLCHAIN} -d 4 ${CMAKE_BINARY_DIR}/${target}${CMAKE_EXECUTABLE_SUFFIX}.map
+         WORKING_DIRECTORY
+             ${CMAKE_BINARY_DIR}
+         COMMENT
+             "Displaying memory map for ${target}"
+)
+endfunction()
+
+#
+# Generate executables
+#
+function(mbed_generate_executable target)
+    mbed_generate_bin_hex(${target})
+    mbed_generate_map_file(${target})
+endfunction()

tools/cmake/toolchains/ARM.cmake

@@ -55,6 +55,7 @@ function(mbed_set_toolchain_options target)
 
     list(APPEND link_options
         "${MBED_STUDIO_ARM_COMPILER}"
+        "--map"
     )
 
     # Add linking time preprocessor macro for TFM targets

tools/cmake/toolchains/GCC_ARM.cmake

@@ -21,6 +21,8 @@ function(mbed_set_toolchain_options target)
         "-Wl,--end-group"
         "-specs=nosys.specs"
         "-T" "${CMAKE_BINARY_DIR}/${APP_TARGET}.link_script.ld"
+        "-Wl,-Map=${CMAKE_BINARY_DIR}/${APP_TARGET}.map"
+        "-Wl,--cref"
     )
 
     # Add linking time preprocessor macro for TFM targets