cortexm3_macro.s
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- ;******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
- ;* File Name : cortexm3_macro.s
- ;* Author : MCD Application Team
- ;* Version : V2.0.2
- ;* Date : 07/11/2008
- ;* Description : Instruction wrappers for special Cortex-M3 instructions
- ;* to be used with RVMDK toolchain.
- ;*******************************************************************************
- ; THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
- ; WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
- ; AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
- ; INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
- ; CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
- ; INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
- ;*******************************************************************************
-
- THUMB
- REQUIRE8
- PRESERVE8
-
- AREA |.text|, CODE, READONLY, ALIGN=2
- ; Exported functions
- EXPORT __WFI
- EXPORT __WFE
- EXPORT __SEV
- EXPORT __ISB
- EXPORT __DSB
- EXPORT __DMB
- EXPORT __SVC
- EXPORT __MRS_CONTROL
- EXPORT __MSR_CONTROL
- EXPORT __MRS_PSP
- EXPORT __MSR_PSP
- EXPORT __MRS_MSP
- EXPORT __MSR_MSP
- EXPORT __RESETPRIMASK
- EXPORT __SETPRIMASK
- EXPORT __READ_PRIMASK
- EXPORT __RESETFAULTMASK
- EXPORT __SETFAULTMASK
- EXPORT __READ_FAULTMASK
- EXPORT __BASEPRICONFIG
- EXPORT __GetBASEPRI
- EXPORT __REV_HalfWord
- EXPORT __REV_Word
- ;*******************************************************************************
- ; Function Name : __WFI
- ; Description : Assembler function for the WFI instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __WFI
-
- WFI
- BX r14
- ;*******************************************************************************
- ; Function Name : __WFE
- ; Description : Assembler function for the WFE instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __WFE
- WFE
- BX r14
- ;*******************************************************************************
- ; Function Name : __SEV
- ; Description : Assembler function for the SEV instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __SEV
- SEV
- BX r14
- ;*******************************************************************************
- ; Function Name : __ISB
- ; Description : Assembler function for the ISB instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __ISB
- ISB
- BX r14
- ;*******************************************************************************
- ; Function Name : __DSB
- ; Description : Assembler function for the DSB instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __DSB
- DSB
- BX r14
- ;*******************************************************************************
- ; Function Name : __DMB
- ; Description : Assembler function for the DMB instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __DMB
- DMB
- BX r14
- ;*******************************************************************************
- ; Function Name : __SVC
- ; Description : Assembler function for the SVC instruction.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __SVC
- SVC 0x01
- BX r14
- ;*******************************************************************************
- ; Function Name : __MRS_CONTROL
- ; Description : Assembler function for the MRS instruction.
- ; Input : None
- ; Return : - r0 : Cortex-M3 CONTROL register value.
- ;*******************************************************************************
- __MRS_CONTROL
- MRS r0, CONTROL
- BX r14
- ;*******************************************************************************
- ; Function Name : __MSR_CONTROL
- ; Description : Assembler function for the MSR instruction.
- ; Input : - r0 : Cortex-M3 CONTROL register new value.
- ; Return : None
- ;*******************************************************************************
- __MSR_CONTROL
- MSR CONTROL, r0
- ISB
- BX r14
- ;*******************************************************************************
- ; Function Name : __MRS_PSP
- ; Description : Assembler function for the MRS instruction.
- ; Input : None
- ; Return : - r0 : Process Stack value.
- ;*******************************************************************************
- __MRS_PSP
- MRS r0, PSP
- BX r14
- ;*******************************************************************************
- ; Function Name : __MSR_PSP
- ; Description : Assembler function for the MSR instruction.
- ; Input : - r0 : Process Stack new value.
- ; Return : None
- ;*******************************************************************************
- __MSR_PSP
-
- MSR PSP, r0 ; set Process Stack value
- BX r14
- ;*******************************************************************************
- ; Function Name : __MRS_MSP
- ; Description : Assembler function for the MRS instruction.
- ; Input : None
- ; Return : - r0 : Main Stack value.
- ;*******************************************************************************
- __MRS_MSP
- MRS r0, MSP
- BX r14
- ;*******************************************************************************
- ; Function Name : __MSR_MSP
- ; Description : Assembler function for the MSR instruction.
- ; Input : - r0 : Main Stack new value.
- ; Return : None
- ;*******************************************************************************
- __MSR_MSP
-
- MSR MSP, r0 ; set Main Stack value
- BX r14
- ;*******************************************************************************
- ; Function Name : __RESETPRIMASK
- ; Description : Assembler function to reset the PRIMASK.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __RESETPRIMASK
- CPSIE i
- BX r14
- ;*******************************************************************************
- ; Function Name : __SETPRIMASK
- ; Description : Assembler function to set the PRIMASK.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __SETPRIMASK
- CPSID i
- BX r14
- ;*******************************************************************************
- ; Function Name : __READ_PRIMASK
- ; Description : Assembler function to get the PRIMASK value.
- ; Input : None
- ; Return : - r0 : PRIMASK register value
- ;*******************************************************************************
- __READ_PRIMASK
-
- MRS r0, PRIMASK
- BX r14
- ;*******************************************************************************
- ; Function Name : __SETFAULTMASK
- ; Description : Assembler function to set the FAULTMASK.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __SETFAULTMASK
- CPSID f
- BX r14
- ;*******************************************************************************
- ; Function Name : __RESETFAULTMASK
- ; Description : Assembler function to reset the FAULTMASK.
- ; Input : None
- ; Return : None
- ;*******************************************************************************
- __RESETFAULTMASK
- CPSIE f
- BX r14
- ;*******************************************************************************
- ; Function Name : __READ_FAULTMASK
- ; Description : Assembler function to get the FAULTMASK value.
- ; Input : None
- ; Return : - r0 : FAULTMASK register value
- ;*******************************************************************************
- __READ_FAULTMASK
-
- MRS r0, FAULTMASK
- BX r14
- ;*******************************************************************************
- ; Function Name : __BASEPRICONFIG
- ; Description : Assembler function to set the Base Priority.
- ; Input : - r0 : Base Priority new value
- ; Return : None
- ;*******************************************************************************
- __BASEPRICONFIG
- MSR BASEPRI, r0
- BX r14
- ;*******************************************************************************
- ; Function Name : __GetBASEPRI
- ; Description : Assembler function to get the Base Priority value.
- ; Input : None
- ; Return : - r0 : Base Priority value
- ;*******************************************************************************
- __GetBASEPRI
- MRS r0, BASEPRI_MAX
- BX r14
- ;*******************************************************************************
- ; Function Name : __REV_HalfWord
- ; Description : Reverses the byte order in HalfWord(16-bit) input variable.
- ; Input : - r0 : specifies the input variable
- ; Return : - r0 : holds tve variable value after byte reversing.
- ;*******************************************************************************
- __REV_HalfWord
-
- REV16 r0, r0
- BX r14
- ;*******************************************************************************
- ; Function Name : __REV_Word
- ; Description : Reverses the byte order in Word(32-bit) input variable.
- ; Input : - r0 : specifies the input variable
- ; Return : - r0 : holds tve variable value after byte reversing.
- ;*******************************************************************************
- __REV_Word
-
- REV r0, r0
- BX r14
-
- END
-
- ;******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE*****
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