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Continue 78K0R development.
This commit is contained in:
Richard Barry
parent
7acae9e570
commit
46425b4099
3 changed files with 64 additions and 75 deletions
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@ -29,7 +29,7 @@
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; ***************************************************************************
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;
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;------------------------------------------------------------------------------
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; Note: Select the correct include files for the device used by the application.
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; Note: Select the correct include files for the device used by the application.
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#include "FreeRTOSConfig.h"
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;------------------------------------------------------------------------------
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@ -47,19 +47,19 @@
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PUBLIC vPortStart
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; Functions used by scheduler
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;------------------------------------------------------------------------------
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;------------------------------------------------------------------------------
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EXTERN vTaskSwitchContext
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EXTERN vTaskIncrementTick
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; Variables used by scheduler
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;------------------------------------------------------------------------------
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;------------------------------------------------------------------------------
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EXTERN pxCurrentTCB
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EXTERN usCriticalNesting
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; Tick ISR Prototype
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;------------------------------------------------------------------------------
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EXTERN ?CL78K0R_V2_L00
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EXTERN ?CL78K0R_V2_L00
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PUBWEAK `??MD_INTTM05??INTVEC 68`
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PUBLIC MD_INTTM05
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@ -72,21 +72,22 @@ MD_INTTM05 SYMBOL "MD_INTTM05"
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; portSAVE_CONTEXT MACRO
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; Saves the context of the remaining general purpose registers, CS and ES
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; (only in far memory mode) registers
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; the usCriticalNesting Value and the Stack Pointer
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; the usCriticalNesting Value and the Stack Pointer
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; of the active Task onto the task stack
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;------------------------------------------------------------------------------
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portSAVE_CONTEXT MACRO
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portSAVE_CONTEXT MACRO
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PUSH AX ; save AX Register to stack
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PUSH HL
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#if configMEMORY_MODE == 1
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#if configMEMORY_MODE == 1
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MOV A, CS ; save CS register
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XCH A, X
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MOV A, ES ; save ES register
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PUSH AX
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#else
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#else
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MOV A, CS ; save CS register
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PUSH AX
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#endif
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#endif
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PUSH DE ; save the remaining general purpose registers
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PUSH BC
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MOVW AX, usCriticalNesting ; save the usCriticalNesting value
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@ -102,7 +103,7 @@ portSAVE_CONTEXT MACRO
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; portRESTORE_CONTEXT MACRO
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; Restores the context of the Stack Pointer, usCriticalNesting
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; value, general purpose registers and the CS and ES (only in far memory mode)
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; of the selected task from the task stack
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; of the selected task from the task stack
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;------------------------------------------------------------------------------
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portRESTORE_CONTEXT MACRO
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@ -114,16 +115,17 @@ portRESTORE_CONTEXT MACRO
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MOVW usCriticalNesting, AX
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POP BC ; restore the necessary general purpose registers
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POP DE
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#if configMEMORY_MODE == 1
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#if configMEMORY_MODE == 1
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POP AX ; restore the ES register
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MOV ES, A
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MOV ES, A
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XCH A, X ; restore the CS register
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MOV CS, A
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#else
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#else
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POP AX
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MOV CS, A ; restore CS register
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#endif
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#endif
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POP HL ; restore general purpose register HL
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POP AX ; restore AX
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ENDM
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;------------------------------------------------------------------------------
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@ -139,16 +141,10 @@ portRESTORE_CONTEXT MACRO
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;------------------------------------------------------------------------------
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RSEG CODE:CODE
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vPortYield:
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PUSH PSW ; save Task PSW (Program Status Word)
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DI ; global disable interrupt
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PUSH AX
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portSAVE_CONTEXT ; Save the context of the current task.
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CALL vTaskSwitchContext ; Call the scheduler.
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call vTaskSwitchContext ; Call the scheduler.
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portRESTORE_CONTEXT ; Restore the context of whichever task the ...
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POP AX
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EI ; (re-)enable global interrupts
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POP PSW ; restore active task PSW
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RET ; ... scheduler decided should run.
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RETB
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;------------------------------------------------------------------------------
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@ -164,18 +160,16 @@ vPortYield:
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RSEG CODE:CODE
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vPortStart:
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portRESTORE_CONTEXT ; Restore the context of whichever task the ...
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POP AX
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EI ; enable global interrupts
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POP PSW ; restore active task PSW
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ret ; ... scheduler decided should run.
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; POP PSW ; restore active task PSW
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reti ; ... scheduler decided should run.
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;------------------------------------------------------------------------------
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; Perform the necessary steps of the Tick Count Increment and Task Switch
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; depending on the chosen kernel configuration
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; depending on the chosen kernel configuration
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;
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; Input: NONE
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;
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; Call: ISR
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; Call: ISR
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;
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; Output: NONE
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;
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@ -183,27 +177,16 @@ vPortStart:
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#if configUSE_PREEMPTION == 1
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MD_INTTM05:
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PUSH AX ; create temporary dummy area on stack
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PUSH AX ; save AX Register to stack
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MOVW AX, [SP+6] ; get PSW
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MOVW [SP+2], AX ; write PSW into dummy area on the stack
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portSAVE_CONTEXT ; Save the context of the current task.
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call vTaskIncrementTick ; Call the timer tick function.
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call vTaskSwitchContext ; Call the scheduler.
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portRESTORE_CONTEXT ; Restore the context of whichever task the ...
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; ... scheduler decided should run.
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MOVW AX, [SP+2] ; get PSW from stack
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MOVW [SP+6], AX ; write PSW to expected location for reti
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POP AX ; restore AX
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MOVW [SP+0], AX ; rewrite dummy stack area to expected value
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POP AX
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RETI
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RETI
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#else
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MD_INTTM05:
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PUSH AX ; save necessary general purpose register...
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PUSH AX ; save necessary general purpose register...
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PUSH HL ; ...used by the ISR
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MOVW AX, CS ; save CS register
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PUSH AX
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@ -212,7 +195,7 @@ MD_INTTM05:
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MOVW CS, AX ; restore CS register
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POP HL ; restore used general purpose registers
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POP AX
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RETI
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RETI
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#endif
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REQUIRE ?CL78K0R_V2_L00
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@ -220,11 +203,17 @@ MD_INTTM05:
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ORG 68
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`??MD_INTTM05??INTVEC 68`:
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DW MD_INTTM05
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; set value for the usCriticalNesting
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COMMON INTVEC:CODE:ROOT(1) ; set ISR location to the Interrupt vector table
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ORG 126
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`??vPortYield??INTVEC 126`:
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DW vPortYield
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; set value for the usCriticalNesting
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RSEG NEAR_ID:CONST:SORT:NOROOT(1)
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`?<Initializer for usCriticalNesting>`:
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DW 10
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;#endif
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END
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