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|
;
; These are the macros used by the v850 port of the uCOS/II.
;
;********************************************************************
; function:
; description:
; --- Modifies ----------------------------------------------
; IO :
; Mem:
; CPU:
; --- Uses --------------------------------------------------
; IO :
; Mem:
; --- Input -------------------------------------------------
; --- Output ------------------------------------------------
; --- Notes -------------------------------------------------
;====================================================================
SAVE_CPU_CTX MACRO
;Save all registers on entry (r3 is the stack pointer)
prepare {r23,r24,r25,r26,r27,r28,r29,r30,r31},(8+(4*14)) ;Add 8 bytes for 2 more registers
mov sp, ep
sst.w r1, 0[ep]
sst.w r2, 4[ep]
sst.w r5, 8[ep]
sst.w r6, 12[ep]
sst.w r7, 16[ep]
sst.w r8, 20[ep]
sst.w r9, 24[ep]
sst.w r10, 28[ep]
sst.w r11, 32[ep]
sst.w r12, 36[ep]
sst.w r13, 40[ep]
sst.w r14, 44[ep]
sst.w r15, 48[ep]
sst.w r16, 52[ep]
;Save caller's PC
stsr EIPC, r1
sst.w r1, 56[ep]
;Save caller's PSW
stsr EIPSW, r1
sst.w r1, 60[ep]
ENDMAC
;********************************************************************
; function:
; description:
; --- Modifies ----------------------------------------------
; IO :
; Mem:
; CPU:
; --- Uses --------------------------------------------------
; IO :
; Mem:
; --- Input -------------------------------------------------
; --- Output ------------------------------------------------
; --- Notes -------------------------------------------------
;====================================================================
SAVE_SP MACRO
;Save stack pointer on OSTCBCur->OSTCBStkPtr (OSTCBStkPtr=0)
mov OSTCBCur, r21
ld.w 0[r21], r21
st.w sp, 0[r21]
ENDMAC
;********************************************************************
; function:
; description:
; --- Modifies ----------------------------------------------
; IO :
; Mem:
; CPU:
; --- Uses --------------------------------------------------
; IO :
; Mem:
; --- Input -------------------------------------------------
; --- Output ------------------------------------------------
; --- Notes -------------------------------------------------
;====================================================================
ISR_ENTRY MACRO
LOCAL _DontSaveSP
;Save all CPU registers according to the standard stack frame
SAVE_CPU_CTX
mov OSIntNesting, r1 ;Increment OSNesting by one
LD.BU 0[r1],r2
add 1, r2
ST.B r2, 0[r1]
cmp 1, r2 ;If OSNesting==1 save SP in current TCB
bne _DontSaveSP
SAVE_SP
_DontSaveSP:
ENDMAC
;********************************************************************
; function:
; description:
; --- Modifies ----------------------------------------------
; IO :
; Mem:
; CPU:
; --- Uses --------------------------------------------------
; IO :
; Mem:
; --- Input -------------------------------------------------
; --- Output ------------------------------------------------
; --- Notes -------------------------------------------------
;====================================================================
ISR_EXIT MACRO
jarl OSIntExit, lp ;Call OSIntExit()
jr OS_Restore_CPU_Context ;Restore processors registers and execute RETI
ENDMAC
|
