LPC11C24: Removed compiler-dependent code

libuavcan_drivers/lpc11c24/driver/src/can.cpp

@@ -314,7 +314,7 @@ uavcan::int16_t CanDriver::select(uavcan::CanSelectMasks& inout_masks, uavcan::M
          * break WFE every once in a while.
          */
 #if !UAVCAN_LPC11C24_NO_WFE
-        asm volatile ("wfe");
+        __WFE();
 #endif
     }
 

libuavcan_drivers/lpc11c24/driver/src/clock.cpp

@@ -31,7 +31,9 @@ const int32_t MaxUtcSpeedCorrectionX16 = 100 * 16;
 
 }
 
-__attribute((noreturn))
+#if __GNUC__
+__attribute__((noreturn))
+#endif
 void fail()
 {
     while (true) { }

libuavcan_drivers/lpc11c24/driver/src/internal.hpp

@@ -17,11 +17,11 @@ struct CriticalSectionLocker
 {
     CriticalSectionLocker()
     {
-        __asm volatile ("cpsid  i");
+        __disable_irq();
     }
     ~CriticalSectionLocker()
     {
-        __asm volatile ("cpsie  i");
+        __enable_irq();
     }
 };
 

libuavcan_drivers/lpc11c24/test_olimex_lpc_p11c24/src/main.cpp

@@ -32,7 +32,9 @@ uavcan::Logger& getLogger()
     return logger;
 }
 
+#if __GNUC__
 __attribute__((noreturn))
+#endif
 void die()
 {
     while (true) { }