;*- ASM -*********************************************************************************
;   Tailor C Run Time Library
;-----------------------------------------------------------------------------------------
;   C Run Time Library Settings
;   -   NO      SemiHosting Support
;   -   NO      Heap Support (malloc series, main function parameters, ...)
;   -   Halt    when C RTL terminated
;   -   Halt    when ANY error is Raised
;   Search for ";S" to avoid Strong Tailoring CRTL
;   -   Normal Exit will NOT shutdown C RTL
;*****************************************************************************************

;-----------------------------------------------------------------------------------------
;   Import Lables to Ensure Features Enabled / Disabled
        IMPORT          __use_no_semihosting_swi        ; NO SemiHosting
        IMPORT          __use_no_heap_region            ; NO C RTL Heap

;=========================================================================================
;   Source Code Begins
        AREA            Tailor_CRTL, CODE, READONLY, ALIGN = 3
        CODE32
        PRESERVE8

;=========================================================================================
;   C RTL is Terminated. Exit to here and NO Return should happen
        EXPORT      _sys_exit
_sys_exit

;=========================================================================================
;   RunTime Abnormal Signal
        EXPORT      __rt_raise
__rt_raise

;=========================================================================================
;S  Normal Exit, will NOT shutdown C RTL
        EXPORT      exit
exit

        B       .

;=========================================================================================
;S  Suggested in RVCT v4
        EXPORT      __user_setup_stackheap
__user_setup_stackheap
        LDR     SP, = ARM_USR_Stack_Begin

;=========================================================================================
;   Another Init for OLD version Compiler

        IMPORT          ARM_USR_Stack_Begin
        IMPORT          ARM_USR_Stack_End

        EXPORT      __user_initial_stackheap
__user_initial_stackheap
        LDR     R0, = ARM_USR_Stack_End
        LDR     R1, = ARM_USR_Stack_Begin
        LDR     R2, = ARM_USR_Stack_End
        LDR     R3, = ARM_USR_Stack_End

;=========================================================================================
;   Write a Character to Console
        EXPORT      _ttywrch
_ttywrch

        BX      LR

;=========================================================================================
;   Source Code Ends
        END