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📝update readme
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@EDI-Systems
EDI-Systems committed Jul 20, 2018
1 parent d927a77 commit bc21a25
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161 changes: 79 additions & 82 deletions MProkaron/Platform/CortexM/rmp_platform_cmx_asm_gcc.s
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
;/*****************************************************************************
;Filename : platform_cmx_asm.s
;Author : pry songleifeng
;Filename : rmp_platform_cmx_asm_gcc.s
;Author : songleifeng, pry
;Date : 07/19/2018
;Description : The assembly part of the RMP RTOS. This is for Cortex-M3/4/7.
;Description : The assembly part of the RMP RTOS. This is for Cortex-M3/4/7, and
; is used on gcc.
;*****************************************************************************/

;/* The ARM Cortex-M Structure ************************************************
Expand All @@ -15,97 +16,96 @@
;APSR Application Program Status Register.
;EPSR Execute Program Status Register.
;The above 3 registers are saved into the stack in combination(xPSR).
;
;The ARM Cortex-M4/7 also include a single-accuracy FPU.
;The ARM Cortex-M4/7 also include a FPU.
;*****************************************************************************/

;/* Begin Header *************************************************************/
.syntax unified
.syntax unified
.thumb
.section ".text"
.align 3
.section ".text"
.align 3
;/* End Header ***************************************************************/

;/* Begin Exports ************************************************************/
.global RMP_Disable_Int
.global RMP_Enable_Int
.global RMP_Mask_Int
.global RMP_MSB_Get
.global _RMP_Start
.global _RMP_Yield
.global PendSV_Handler
.global SysTick_Handler
.global RMP_Disable_Int
.global RMP_Enable_Int
.global RMP_Mask_Int
.global RMP_MSB_Get
.global _RMP_Start
.global _RMP_Yield
.global PendSV_Handler
.global SysTick_Handler
;/* End Exports **************************************************************/

;/* Begin Imports ************************************************************/
.extern _RMP_Get_High_Rdy
.extern _RMP_Tick_Handler
.extern RMP_Cur_Thd
.extern RMP_Cur_SP
.extern RMP_Save_Ctx
.extern RMP_Load_Ctx
.extern _RMP_Get_High_Rdy
.extern _RMP_Tick_Handler
.extern RMP_Cur_Thd
.extern RMP_Cur_SP
.extern RMP_Save_Ctx
.extern RMP_Load_Ctx
;/* End Imports **************************************************************/

;/* Begin Function:RMP_Disable_Int ********************************************
;Description : The function for disabling all interrupts. Does not allow nesting.
;Input : None.
;Output : None.
;Register Usage : None.
;Description : The function for disabling all interrupts. Does not allow nesting.
;Input : None.
;Output : None.
;Return : None.
;*****************************************************************************/
.thumb_func
.thumb_func
RMP_Disable_Int:
.fnstart
.cantunwind
CPSID I
BX LR
CPSID I
BX LR
.fnend
;/* End Function:RMP_Disable_Int *********************************************/

;/* Begin Function:RMP_Enable_Int *********************************************
;Description : The function for enabling all interrupts. Does not allow nesting.
;Input : None.
;Output : None.
;Register Usage : None.
;Description : The function for enabling all interrupts. Does not allow nesting.
;Input : None.
;Output : None.
;Return : None.
;*****************************************************************************/
.thumb_func
RMP_Enable_Int:
.fnstart
.cantunwind
CPSIE I
BX LR
CPSIE I
BX LR
.fnend
;/* End Function:RMP_Enable_Int **********************************************/

;/* Begin Function:RMP_Mask_Int ***********************************************
;Description : The function for masking & unmasking interrupts. Does not allow masking.
;Input : R0 - The new basepri to set.
;Output : None.
;Register Usage : None.
;Description : The function for masking & unmasking interrupts. Does not allow nesting.
;Input : rmp_ptr_t R0 - The new BASEPRI to set.
;Output : None.
;Return : None.
;*****************************************************************************/
.thumb_func
.thumb_func
RMP_Mask_Int:
.fnstart
.cantunwind
MSR BASEPRI,R0
BX LR
MSR BASEPRI,R0
BX LR
.fnend
;/* End Function:RMP_Mask_Int ************************************************/

;/* Begin Function:RMP_MSB_Get ************************************************
;Description : Get the MSB of the word.
;Input : ptr_t Val - The value.
;Input : rmp_ptr_t R0 - The value.
;Output : None.
;Return : ptr_t - The MSB position.
;Register Usage : None.
;*****************************************************************************/
.thumb_func
.thumb_func
RMP_MSB_Get:
.fnstart
.cantunwind
CLZ R1,R0
MOVS R0,#31
SUBS R0,R1
BX LR
CLZ R1,R0
MOVS R0,#31
SUBS R0,R1
BX LR
.fnend
;/* End Function:RMP_MSB_Get *************************************************/

Expand All @@ -114,16 +114,16 @@ RMP_MSB_Get:
;Input : None.
;Output : None.
;*****************************************************************************/
.thumb_func
.thumb_func
_RMP_Yield:
.fnstart
.cantunwind
LDR R0,=0xE000ED04
LDR R1,=0x10000000
STR R1,[R0]
DSB
LDR R0,=0xE000ED04
LDR R1,=0x10000000
STR R1,[R0]

ISB
BX LR
BX LR
.fnend
;/* End Function:_RMP_Yield **************************************************/

Expand All @@ -132,20 +132,17 @@ _RMP_Yield:
;Input : None.
;Output : None.
;*****************************************************************************/
.thumb_func
.thumb_func
_RMP_Start:
.fnstart
.cantunwind
SUBS R1,#64
MSR PSP,R1
MOVS R4,#0x02
MSR CONTROL,R4

DSB
SUBS R1,#64
MSR PSP,R1
MOVS R4,#0x02
MSR CONTROL,R4

ISB

BLX R0
B .
BLX R0
.fnend
;/* End Function:_RMP_Start **************************************************/

Expand All @@ -160,29 +157,29 @@ _RMP_Start:
;Input : None.
;Output : None.
;*****************************************************************************/
.thumb_func
.thumb_func
PendSV_Handler:
.fnstart
.cantunwind
MRS R0,PSP
STMDB R0!,{R4-R11,LR}
MRS R0,PSP
STMDB R0!,{R4-R11,LR}

BL RMP_Save_Ctx
BL RMP_Save_Ctx

LDR R1,=RMP_Cur_SP
STR R0,[R1]
LDR R1,=RMP_Cur_SP
STR R0,[R1]

BL _RMP_Get_High_Rdy
BL _RMP_Get_High_Rdy

LDR R1,=RMP_Cur_SP
LDR R0,[R1]
LDR R1,=RMP_Cur_SP
LDR R0,[R1]

BL RMP_Load_Ctx
BL RMP_Load_Ctx

LDMIA R0!,{R4-R11,LR}
MSR PSP,R0
LDMIA R0!,{R4-R11,LR}
MSR PSP,R0

BX LR
BX LR
.fnend
;/* End Function:PendSV_Handler **********************************************/

Expand All @@ -197,16 +194,16 @@ PendSV_Handler:
;Input : None.
;Output : None.
;*****************************************************************************/
.thumb_func
.thumb_func
SysTick_Handler:
.fnstart
.cantunwind
PUSH {LR}
PUSH {LR}

MOVS R0,#0x01
BL _RMP_Tick_Handler
MOVS R0,#0x01
BL _RMP_Tick_Handler

POP {PC}
POP {PC}
NOP
.fnend
;/* End Function:SysTick_Handler *********************************************/
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5 changes: 4 additions & 1 deletion README.md
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Expand Up @@ -255,7 +255,7 @@ This software is **triple-licensed**: it is either **[LGPL v3](LICENSE.md)** or
- Keil uVision 5 (armcc)
- Code composer studio
- MPLAB X XC32
- gcc/clang-llvm
- GCC/Clang-LLVM

    Other toolchains are not recommended nor supported at this point, though it might be possible to support them later on.

Expand All @@ -265,3 +265,6 @@ This software is **triple-licensed**: it is either **[LGPL v3](LICENSE.md)** or

## EDI Project Information
    Mutate - Protero - Prokaron (M5P1 R4T1)

## Starring Contributors
    Leifeng Song - ARM Cortex-M3/4/7 assembly port.
3 changes: 3 additions & 0 deletions README_CN.md
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Expand Up @@ -257,3 +257,6 @@ Click **[HERE](README.md)** for English version.

## EDI 工程信息
  演进 - 远古 - 原核 (M5P1 R4T1)

## 杰出贡献者
  宋磊锋 - ARM Cortex M3/4/7的GCC汇编支持。

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