Add -mcmse flag for GCC and improved logic for cpu core

Author: Deepika

tools/toolchains/gcc.py

@@ -86,11 +86,14 @@ def __init__(self, target,  notify=None, macros=None,
             self.cpu.append("-mfloat-abi=hard")
             self.cpu.append("-mno-unaligned-access")
 
-        if target.core == "Cortex-M23" or target.core == "Cortex-M23-NS":
+        if target.core.startswith("Cortex-M23"):
             self.cpu.append("-march=armv8-m.base")
-        elif target.core == "Cortex-M33" or target.core == "Cortex-M33-NS":
+        elif target.core.startswith("Cortex-M33"):
             self.cpu.append("-march=armv8-m.main")
 
+        if target.core == "Cortex-M23" or target.core == "Cortex-M33":
+            self.cpu.append("-mcmse")
+
         self.flags["common"] += self.cpu
 
         main_cc = join(tool_path, "arm-none-eabi-gcc")

tools/toolchains/iar.py

@@ -45,9 +45,9 @@ def __init__(self, target, notify=None, macros=None,
                                build_profile=build_profile)
         if target.core == "Cortex-M7F" or target.core == "Cortex-M7FD":
             cpuchoice = "Cortex-M7"
-        elif target.core == "Cortex-M23-NS" or target.core == "Cortex-M23":
+        elif target.core.startswith("Cortex-M23"):
             cpuchoice = "8-M.baseline"
-        elif target.core == "Cortex-M33-NS" or target.core == "Cortex-M33":
+        elif target.core.startswith("Cortex-M33"):
             cpuchoice = "8-M.mainline"
         else:
             cpuchoice = target.core