126 lines
3.7 KiB
HTML
126 lines
3.7 KiB
HTML
;
|
|
; 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
|