diff options
Diffstat (limited to 'Source/portable/IAR/78K0R/ISR_Support.h')
| -rw-r--r-- | Source/portable/IAR/78K0R/ISR_Support.h | 40 |
1 files changed, 19 insertions, 21 deletions
diff --git a/Source/portable/IAR/78K0R/ISR_Support.h b/Source/portable/IAR/78K0R/ISR_Support.h index 6b291cc9..126d738b 100644 --- a/Source/portable/IAR/78K0R/ISR_Support.h +++ b/Source/portable/IAR/78K0R/ISR_Support.h @@ -39,29 +39,28 @@ ;------------------------------------------------------------------------------
; portSAVE_CONTEXT MACRO
-; Saves the context of the remaining general purpose registers, CS and ES
-; (only in far memory mode) registers
-; the usCriticalNesting Value and the Stack Pointer
+; Saves the context of the general purpose registers, CS and ES (only in far
+; memory mode) registers the usCriticalNesting Value and the Stack Pointer
; of the active Task onto the task stack
;------------------------------------------------------------------------------
portSAVE_CONTEXT MACRO
- PUSH AX ; save AX Register to stack
+ PUSH AX ; Save AX Register to stack.
PUSH HL
#if configMEMORY_MODE == 1
- MOV A, CS ; save CS register
+ MOV A, CS ; Save CS register.
XCH A, X
- MOV A, ES ; save ES register
+ MOV A, ES ; Save ES register.
PUSH AX
#else
- MOV A, CS ; save CS register
+ MOV A, CS ; Save CS register.
PUSH AX
#endif
- PUSH DE ; save the remaining general purpose registers
+ PUSH DE ; Save the remaining general purpose registers.
PUSH BC
- MOVW AX, usCriticalNesting ; save the usCriticalNesting value
+ MOVW AX, usCriticalNesting ; Save the usCriticalNesting value.
PUSH AX
- MOVW AX, pxCurrentTCB ; save the Stack pointer
+ MOVW AX, pxCurrentTCB ; Save the Stack pointer.
MOVW HL, AX
MOVW AX, SP
MOVW [HL], AX
@@ -70,30 +69,29 @@ portSAVE_CONTEXT MACRO ;------------------------------------------------------------------------------
; portRESTORE_CONTEXT MACRO
-; Restores the context of the Stack Pointer, usCriticalNesting
-; value, general purpose registers and the CS and ES (only in far memory mode)
+; Restores the task Stack Pointer then use this to restore usCriticalNesting,
+; general purpose registers and the CS and ES (only in far memory mode)
; of the selected task from the task stack
;------------------------------------------------------------------------------
-
portRESTORE_CONTEXT MACRO
- MOVW AX, pxCurrentTCB ; restore the Stack pointer
+ MOVW AX, pxCurrentTCB ; Restore the Stack pointer.
MOVW HL, AX
MOVW AX, [HL]
MOVW SP, AX
- POP AX ; restore usCriticalNesting value
+ POP AX ; Restore usCriticalNesting value.
MOVW usCriticalNesting, AX
- POP BC ; restore the necessary general purpose registers
+ POP BC ; Restore the necessary general purpose registers.
POP DE
#if configMEMORY_MODE == 1
- POP AX ; restore the ES register
+ POP AX ; Restore the ES register.
MOV ES, A
- XCH A, X ; restore the CS register
+ XCH A, X ; Restore the CS register.
MOV CS, A
#else
POP AX
- MOV CS, A ; restore CS register
+ MOV CS, A ; Restore CS register.
#endif
- POP HL ; restore general purpose register HL
- POP AX ; restore AX
+ POP HL ; Restore general purpose register HL.
+ POP AX ; Restore AX.
ENDM
;------------------------------------------------------------------------------
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