Space optimization to fault handlers

Author: SenRamakri

cmsis/TARGET_CORTEX_M/TOOLCHAIN_ARM/except.S

@@ -148,10 +148,9 @@ Fault_Handler_Continue2
                 ADDS     R1,#4
                 MRS      R2,CONTROL               ; Get CONTROL Reg
                 STR      R2,[R1]
-                LDR      R3,=mbed_fault_handler   ; Load address of mbedFaultHandler
                 MOV      R0,R12
                 LDR      R1,=mbed_fault_context
-                BLX      R3
+                BL       mbed_fault_handler
 #endif                    
                 B        .                        ; Just in case we come back here                
                 ENDP

cmsis/TARGET_CORTEX_M/TOOLCHAIN_GCC/except.S

@@ -181,10 +181,9 @@ Fault_Handler_Continue2:
         ADDS     R1,#4
         MRS      R2,CONTROL               // Get CONTROL Reg
         STR      R2,[R1]
-        LDR      R3,=mbed_fault_handler   // Load address of mbedFaultHandler
         MOV      R0,R12
         LDR      R1,=mbed_fault_context
-        BLX      R3
+        BL       mbed_fault_handler
 #endif
         B        .                        // Just in case we come back here   
         

cmsis/TARGET_CORTEX_M/TOOLCHAIN_IAR/except.S

@@ -143,10 +143,9 @@ Fault_Handler_Continue2
                 ADDS    R1,#4
                 MRS     R2,CONTROL               ; Get CONTROL Reg
                 STR     R2,[R1]
-                LDR     R3,=mbed_fault_handler   ; Load address of mbedFaultHandler
                 MOV     R0,R12
                 LDR     R1,=mbed_fault_context
-                BLX     R3 
+                BL      mbed_fault_handler 
 #endif                
                 B       .                        ; Just in case we come back here    
 #endif                                           ; #if (MBED_FAULT_HANDLER_SUPPORT == 1)