mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-25 20:33:13 +00:00
681 lines
13 KiB
Plaintext
681 lines
13 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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* SYSCALL (AUXLC to AUXLC)
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* Used by user & kernel for inter bank Calls
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* In:
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* X = SYSfnc.Index
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* Y,A = free for Inline param
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*--------------------------------------
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GP.CodeStart jmp GP.SysCall
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*--------------------------------------
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* LIBCALL (AUXLC to AUXLC)
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* Used by user
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* In:
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* Y = LIB.ID
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* X = LIBfnc.Index
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* A = free for Inline param
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*--------------------------------------
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jmp GP.LibCall
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*--------------------------------------
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* AppleTalk MLICALL (AUXLC to MAINLC)
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* Used by user
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* In:
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* Y,A = Params
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*--------------------------------------
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jmp GP.AtkCall
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*--------------------------------------
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* ROMCALL (AUXLC to ROMLC)
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* Used by Kernel
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* In:
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* X = ROM Function
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* Y,A = Param
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*--------------------------------------
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jmp GP.FpuCall
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*--------------------------------------
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* BADCALL
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*--------------------------------------
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lda #MLI.E.BADCALL
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sec
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rts
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*--------------------------------------
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* SLEEP
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*--------------------------------------
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GP.Sleep php
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sei
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phy
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ldy #S.PS.A
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sta (pPs),y
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txa
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iny #S.PS.X
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sta (pPs),y
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pla
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iny #S.PS.Y
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sta (pPs),y
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pla
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iny #S.PS.P
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sta (pPs),y
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pla get PC LO
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plx get PC HI
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inc Advance one byte because of return by RTI
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bne GP.Sleep2
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inx
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GP.Sleep2 ldy #S.PS.PC
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sta (pPs),y
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txa
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iny #S.PS.PC+1
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sta (pPs),y
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tsx
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inx
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inx keep PC HI,LO from KERNEL jsr PSExec/PSResume
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inx Stack Ptr is $1ff if empty
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txa
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beq .3
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tay Save !Byte count for later
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.2 pla
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>PUSHA
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inx
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bne .2
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tya
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.3 >PUSHA push CPU Stack BC to restore on top of Soft Stack
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inc $1fe PC=PC+1
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bne .4
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inc $1ff because of RTI
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.4 lda (pPs)
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ora #S.PS.F.SLEEP
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sta (pPs)
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lda #0 cld,clc,cli
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pha
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rti exit to kernel with CC
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*--------------------------------------
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* *** MUST BE REINTRANT ***
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*--------------------------------------
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GP.SysCall dec IRQ.InKernel
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pha
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phy
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ldy #S.PS.A
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sta (pPs),y
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txa
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iny #S.PS.X
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sta (pPs),y
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pla
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iny #S.PS.Y
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sta (pPs),y
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tay
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pla
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jsr K.SYSCALL2
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bcc .2 no error quit...
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tax CS,A=0 ?
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beq .3 Yes, BLOCKING I/O
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.2 inc IRQ.InKernel
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rts Unmodified Carry
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.3 pla get PC LO
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plx get PC HI
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* sec
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sbc #2 move back JSR GP.SysCall -3 (jsr $BF00) +1 (RTI)
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bcs .4
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dex
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.4 inc IRQ.InKernel
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bra GP.Sleep2
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*--------------------------------------
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GP.LibCall dec IRQ.InLib
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pha No need to save X, K.GetMemPtr will leave it unmodified
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tya Get LIB hMem in A
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jsr K.GetMemPtr Get LIB Code Segment (MemMgr in $E000, no BNK change)
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>STYA .1+1
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pla
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.1 jsr $FFFF SELF MODIFIED
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GP.LibCall.8 inc IRQ.InLib
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GP.LibCall.RTS rts
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*--------------------------------------
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GP.AtkCall dec IRQ.InKernel
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>STYA .1
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jsr GO.ProDOS
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jsr MLI
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.DA #MLIATALK
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.1 .DA *
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jsr GO.A2osX
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GP.AtkCall.INC inc IRQ.InKernel
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rts
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*/--------------------------------------
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* # Add32,Sub32,Mul32,IMul32,Div32,IDiv32,Mod32,IMod32,Cmp32,ICmp32
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* Return X+Y, X-Y, X*Y, X/Y, X mod Y....
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* ## ASM
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* **In:**
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* `>PUSHF X (long)`
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* `>PUSHF Y (long)`
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* `>FPU add32`
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* `...`
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* ## RETURN VALUE
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* On stack (long)
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*\--------------------------------------
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GP.FpuCall dec IRQ.InKernel
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jsr .1
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bra GP.AtkCall.INC
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.1 cpx #FPU.FADD
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bcc GP.RomCall.JmpX INT32, direct JMP
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phx
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jsr GP.SetFAC Get float from stack
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plx
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cpx #FPU.PWR+1
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bcs GP.RomCallGetFacOnStack
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*/--------------------------------------
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* # FAdd,FSub,FMult,FDiv,FPwr
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* Return X+Y, X-Y, X*Y, X/Y, X^Y
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* ## ASM
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* **In:**
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* `>PUSHF X (float)`
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* `>PUSHF Y (float)`
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* `>FPU fadd`
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* `>FPU fsub`
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* `>FPU fmult`
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* `>FPU fdiv`
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* `>FPU fpwr`
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* ## RETURN VALUE
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* On stack (float)
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*\--------------------------------------
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lda pStack
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clc
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adc #5
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sta pStack
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phx
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jsr GP.SetARG
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plx
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*/--------------------------------------
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* # Log,Sqr,Exp,Cos,Sin,Tan,ATan
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* Return Log(x), Sqr(x), E^X, Cos(x), Sin(X), Tan(x), ATan(x)
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* ## C
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* `float log ( float x);`
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* `float sqr ( float x);`
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* `float exp ( float x);`
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* `float cos ( float x);`
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* `float sin ( float x);`
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* `float tan ( float x);`
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* `float atan ( float x);`
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* ## ASM
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* **In:**
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* `>PUSHF x (Float)`
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* `>FPU log`
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* ## RETURN VALUE
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* On stack (Float)
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*\--------------------------------------
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GP.RomCallGetFacOnStack
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jsr GP.ROMCALL
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lda pStack
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ldy pStack+1
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sta FORPNT Ptr to dst buffer
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sty FORPNT+1
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ldx #FPU.GETFAC
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*--------------------------------------
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GP.RomCall phx
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ldx $D000
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stx .8+1
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bit RROMBNK1
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plx
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jsr GP.RomCall.JmpX
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.8 ldx #$ff
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bit $C000,x
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bit $C000,x
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rts
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*--------------------------------------
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GP.SetARG ldx #FPU.SETARG
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.HS 2C BIT ABS
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GP.SetFAC ldx #FPU.SETFAC
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>LDYA pStack
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bra GP.RomCall
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*/--------------------------------------
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* # float
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* Return 'floated' long
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* ## C
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* `float f = (float)l;
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* ## ASM
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* **In:**
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* `>PUSHL l` (long)
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* `>FPU float`
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* ## RETURN VALUE
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* On stack (float)
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*\--------------------------------------
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GP.Float ldy #3
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.1 lda (pStack),y
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sta FAC+1,y Reverse Order
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dey
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bpl .1
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dec pStack keep 5 bytes on stack
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stz FAC.SIGN
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lda #$80+32
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sta FAC Positive + Exp=32
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ldx #FPU.LTOF
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bra GP.RomCallGetFacOnStack
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*/--------------------------------------
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* # lrintf
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* Return float rounded into a long
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* ## C
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* `long int lrintf (float x);`
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* ## ASM
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* **In:**
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* `>PUSHF x`
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* `>FPU lrintf`
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* ## RETURN VALUE
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* On stack (long)
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*\--------------------------------------
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GP.lrintf jsr GP.SetFAC
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inc pStack keep 4 bytes on stack
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ldx #FPU.QINT
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jsr GP.ROMCALL
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ldy #3
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.1 lda FAC+1,y
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sta (pStack),y
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dey
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bpl .1
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rts
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*--------------------------------------
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GP.RomCall.JmpX jmp (.1,x)
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.1 .DA GP.ADD32
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.DA GP.SUB32
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.DA GP.UMUL32
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.DA GP.IMUL32
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.DA GP.UDIV32
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.DA GP.IDIV32
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.DA GP.UMOD32
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.DA GP.IMOD32
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.DA GP.UCMP32
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.DA GP.ICMP32
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* http://www.txbobsc.com/scsc/scdocumentor/E7A0.html
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.DA $E7C1 FADDT
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.DA $E7AA FSUBT
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.DA $E987 FMULTT.1
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.DA $EA6B FDIVT+2
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.DA $EE97 FPWRT
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.DA $E941 LOG
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.DA $EE8D SQR
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.DA $EF09 EXP
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.DA $EFEA COS
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.DA $EFF1 SIN
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.DA $F03A TAN
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.DA $F09E ATN
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*--------------------------------------
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.DA $E9E3 LOAD.ARG.FROM.YA
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.DA $EAF9 LOAD.FAC.FROM.YA
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.DA $EB27 SETFOR (GETFAC)
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.DA $EBB2 FCOMP (Y,A with FAC)
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.DA $E82E NORMALIZE.FAC.2 (L->F)
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.DA $EBF2 QINT (F->L)
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.DA $EC4A FIN AToF
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.DA $ED36 FOUT.1 PrintF
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*--------------------------------------
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GP.ADD32 clc
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.HS B0 BCS
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GP.SUB32 sec
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php
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jsr GP.PopACC32
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ldy #0
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ldx #3
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plp
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bcs .1
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lda #$79 ADC Absolute,Y
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.HS 2C BIT ABS
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.1 lda #$F9 SBC Absolute,Y
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sta .3
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.2 lda (pStack),y
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.3 adc ACC32,y SELF MODIFIED
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sta (pStack),y
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iny
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dex
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bpl .2
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GP.SUB32.RTS rts
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*--------------------------------------
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* Returns:
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* ff X < Y
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* 0 X = Y
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* 1 X > Y
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*--------------------------------------
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GP.UCMP32
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GP.ICMP32 jsr GP.SUB32
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jsr GP.PopACC32 A = ACC32+3 (sign)
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tay
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bmi .2
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.1 ora ACC32+2
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ora ACC32+1
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ora ACC32
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beq .8
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lda #1
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rts
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.2 lda #$ff
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.8 rts
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*--------------------------------------
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GP.UMUL32 clc
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.HS B0 BCS
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GP.IMUL32 sec
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php
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jsr GP.MULDIVMOD.COMMON
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jsr MATH.MUL32
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plp
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bcc GP.SUB32.RTS
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GP.RETURN.ITMP
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lda ACC32.Sign
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eor ARG32.Sign
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bpl GP.PutTMP32
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bra GP.PutNotTMP32
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*--------------------------------------
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GP.UDIV32 clc
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.HS B0 BCS
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GP.IDIV32 sec
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clv
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bra GP.DIVMOD
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GP.UMOD32 clc
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.HS B0 BCS
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GP.IMOD32 sec
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bit GP.SUB32.RTS $60
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GP.DIVMOD php
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jsr GP.MULDIVMOD.COMMON
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jsr MATH.DIVMOD32
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plp
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bcc .3 unsigned
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bvs GP.RETURN.ITMP IMOD
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lda ACC32.Sign IDIV
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eor ARG32.Sign
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bpl GP.PutARG32
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bra GP.PutNotARG32
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.3 bvs GP.PutARG32 DIV
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*--------------------------------------
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GP.PutTMP32 lda #TMP32 MOD
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.HS 2C BIT ABS
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*--------------------------------------
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GP.PutARG32 lda #ARG32
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sta .1+1
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ldy #3
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.1 lda $ff,y SELF MODIFIED
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sta (pStack),y
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dey
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bpl .1
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rts
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*--------------------------------------
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GP.PutNotTMP32 lda #TMP32
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.HS 2C BIT ABS
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*--------------------------------------
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GP.PutNotARG32 lda #ARG32
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sta .1+1
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ldy #0
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ldx #3
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sec
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.1 lda $ff,y SELF MODIFIED
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eor #$ff two's complement of X bytes
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adc #0
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sta (pStack),y
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iny
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dex
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bpl .1
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rts
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*--------------------------------------
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GP.PopACC32 ldy #0
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.1 lda (pStack)
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inc pStack
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sta ACC32,y
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iny
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cpy #4
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bne .1
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sta ACC32.Sign
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rts
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*--------------------------------------
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GP.GetARG32 ldy #0
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.1 lda (pStack),y
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sta ARG32,y
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iny
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cpy #4
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bne .1
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sta ARG32.Sign
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GP.GetARG32.RTS rts
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*--------------------------------------
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GP.MULDIVMOD.COMMON
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php
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jsr GP.PopACC32
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jsr GP.GetARG32
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plp
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bcc GP.GetARG32.RTS
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jsr MATH.ACC32ABS
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jmp MATH.ARG32ABS
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*--------------------------------------
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* MLI : From Kernel Aux LC to Main LC
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*--------------------------------------
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GP.MLICall stx .1
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sta K.MLI.PARAMS
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jsr GO.ProDOS
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jsr MLI
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.1 .BS 1
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.DA K.MLI.PARAMS
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jsr GO.A2osX
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rts
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*--------------------------------------
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GO.ProDOS pha
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lda $D000 We re coming from AUXLC, saving bank...
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sta GO.A2osX.BNK+1
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pla
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php
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clc
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.HS 2C bit abs
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GO.A2osX php
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sec
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sei
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sta GO.EXIT.SaveA+1
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stx GO.EXIT.SaveX+1
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sty GO.EXIT.SaveY+1
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pla Restore P in A for later
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plx Get PC and add 1 for return
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ply
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inx
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bne .1
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iny
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.1 stx GO.EXIT.JMP+1
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sty GO.EXIT.JMP+2
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bcs GO.A2osX.BNK if CS, go AUXLC
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bit RRAMWRAMBNK1 Go MAINLC (ProDOS), always BNK1
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bit RRAMWRAMBNK1
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tsx
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stx A2osX.SaveSX
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ldx A2osX.SaveSM
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txs
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sta CLRALTZP
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bra GO.EXIT
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GO.A2osX.BNK ldx #RRAMWRAMBNK1 Self Modified, initialized to BNK1 for INIT3
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bit $C000,x
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bit $C000,x
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sta SETALTZP
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tsx
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stx A2osX.SaveSM
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ldx A2osX.SaveSX
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txs
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*--------------------------------------
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GO.EXIT pha push P on stack
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GO.EXIT.SaveY ldy #$ff
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GO.EXIT.SaveX ldx #$ff
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GO.EXIT.SaveA lda #$ff
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plp
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GO.EXIT.JMP jmp $FFFF SELF MODIFIED
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*--------------------------------------
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* Called from ProDOS IRQ Manager (LCBNK1)
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* A,X,Y, $FA->$FF Already Saved
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* Main RAM,ZP/LC selected
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* must begin with CLD
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* must exit with RTS
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* - CC if IRQ cleared, CS if NOT
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*--------------------------------------
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GP.IrqH cld
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bit IRQ.SkipA2osX After A2osX IRQ.H ?
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bmi GP.IrqH.Exit
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sta SETALTZP switch to aux LC
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tsx
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stx A2osX.SaveSM
|
||
ldx A2osX.SaveSX
|
||
txs
|
||
|
||
GP.IrqH.JSR jsr K.IrqH.DEV SELF MODIFIED
|
||
|
||
tsx go back to Main
|
||
stx A2osX.SaveSX
|
||
ldx A2osX.SaveSM
|
||
txs
|
||
sta CLRALTZP
|
||
|
||
rts
|
||
|
||
GP.IrqH.Exit stz IRQ.SkipA2osX reset flag
|
||
sec
|
||
rts
|
||
*--------------------------------------
|
||
CORE.VBLState .BS 1
|
||
CORE.IRQMode .BS 1
|
||
CORE.TickPerSec .BS 1
|
||
CORE.TickPer10t .BS 1
|
||
CORE.TickSec .BS 1
|
||
CORE.Tick10t .BS 1
|
||
CORE.CPUStatCnt .DA #100
|
||
CORE.LastPSID .DA #0
|
||
*--------------------------------------
|
||
IRQ.InKernel .BS 1
|
||
IRQ.InLib .BS 1
|
||
IRQ.SkipA2osX .BS 1
|
||
|
||
IRQ.IntNum .BS 1
|
||
IRQ.VBL.n0 .BS 1
|
||
IRQ.VBL.0n .BS 1
|
||
IRQ.Mode .BS 1
|
||
IRQ.Tick .BS 1
|
||
*--------------------------------------
|
||
*GO.Reset jsr GO.A2osX
|
||
* jmp CORE.Run
|
||
*--------------------------------------
|
||
*BrkHandler bra *
|
||
*--------------------------------------
|
||
GP.CodeEnd .BS $BEE0-*
|
||
*--------------------------------------
|
||
* $BEE0->$BEEF : Public Variables
|
||
*--------------------------------------
|
||
.BS 16
|
||
*--------------------------------------
|
||
* $BEF0->$BEFF : Kernel Config Block
|
||
*--------------------------------------
|
||
.DA #6 A2osX.HZ=60hz
|
||
.DA #2 A2osX.TTYDEVS=2
|
||
.HS 000000000000
|
||
.DA #0 ChRoot/Preemptive Disabled
|
||
.HS 00000000000000 All Slots marked as "Free"
|
||
*--------------------------------------
|
||
GP.End .EQ *
|
||
MAN
|
||
SAVE USR/SRC/SYS/KERNEL.S.GP
|
||
LOAD USR/SRC/SYS/KERNEL.S
|
||
ASM
|