CN300/STU/src_specific/stm32f1xx_STUCpuRegsAddressing.s

;******************************************************************************

  THUMB
  REQUIRE8
  PRESERVE8

  AREA |.text|, CODE, READONLY, ALIGN=2

  ; Reference to the FailSafe routine to be executed in case of non-recoverable
  ; failure									
  IMPORT FailSafePOR

    ;; C variables for control flow monitoring
  IMPORT CtrlFlowCnt
  IMPORT CtrlFlowCntInv

;*******************************************************************************
; Function Name  : STL_StartUpCPUTest
; Description    : Full Cortex-M3 CPU test at start-up
;                  Note: when possible, BRANCH are 16-bit only (depending on
;                  relative offset to final BL instruction)
; Input          : None.
; Output         : Branch directly to a Fail Safe routine in case of failure
; Return         : CPUTEST_SUCCESS (=1)
; WARNING        : all registers destroyed when exiting this function (including
;                  preserved registers R4 to R11) and excluding stack point R13)
;*******************************************************************************/

STU_CPURegsAddressing PROC                    ;64.7us
	EXPORT STU_CPURegsAddressing
	
	PUSH  {R0-R12}
	
	MOVS R0, #0x00
	MOVS R1, #0x00
	MOVS R2, #0x00
	MOVS R3, #0x00
	MOVS R4, #0x00
	MOVS R5, #0x00
	MOVS R6, #0x00
	MOVS R7, #0x00
	MOVS R8, #0x00
	MOVS R9, #0x00
	MOVS R10, #0x00
	MOVS R11, #0x00
	MOVS R12, #0x00
	
	MOVS R0, #0x00
	MOVS R1, #0x01
	MOVS R2, #0x02
	MOVS R3, #0x03
	MOVS R4, #0x04
	MOVS R5, #0x05
	MOVS R6, #0x06
	MOVS R7, #0x07
	MOVS R8, #0x08
	MOVS R9, #0x09
	MOVS R10, #0x0A
	MOVS R11, #0x0B
	MOVS R12, #0x0C
	
	CMP R0,  #0x00
    BNE __REGS_ADDRESSING_ERR
	CMP R1, #0x01
	BNE __REGS_ADDRESSING_ERR
	CMP R2, #0x02
	BNE __REGS_ADDRESSING_ERR
	CMP R3, #0x03
	BNE __REGS_ADDRESSING_ERR
	CMP R4, #0x04
	BNE __REGS_ADDRESSING_ERR
	CMP R5, #0x05
	BNE __REGS_ADDRESSING_ERR
	CMP R6, #0x06
	BNE __REGS_ADDRESSING_ERR
	CMP R7, #0x07
	BNE __REGS_ADDRESSING_ERR
	CMP R8, #0x08
	BNE __REGS_ADDRESSING_ERR
	CMP R9, #0x09
	BNE __REGS_ADDRESSING_ERR
	CMP R10, #0x0A
	BNE __REGS_ADDRESSING_ERR
	CMP R11, #0x0B
	BNE __REGS_ADDRESSING_ERR
	CMP R12, #0x0C
	BNE __REGS_ADDRESSING_ERR
	
	B __REGS_ADDRESSING_RET
	
__REGS_ADDRESSING_ERR
	B FailSafePOR
	
__REGS_ADDRESSING_RET
	POP  {R0-R12}
	
	BX LR               ; return to the caller
    ENDP
	END