163 lines
5.3 KiB
NASM
163 lines
5.3 KiB
NASM
mcopy native.macros
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****************************************************************
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*
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* Remove - remove an instruction from the peephole array
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*
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* Inputs:
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* ns - index of element to remove
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*
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****************************************************************
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*
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Remove start
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elSize equ 12 size of an element
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nPeepSize equ 128 size of array
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ns equ 4 array element
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lda ns,S compute the source address
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cmp #nPeepSize (quit if nothing to move)
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bge rtl
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asl a
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adc ns,S
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asl a
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asl a
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adc #NPEEP
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tax
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sec compute the source address
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sbc #elSize
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tay
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sec compute the move length
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sbc #(nPeepSize-1)*elSize+NPEEP
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eor #$FFFF
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mvn NPEEP,NPEEP move the array elements
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rtl dec nNextSpot nnextspot := nnextspot-1;
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lda #1 didone := true;
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sta didOne
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lda 2,S fix stack and return
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sta 4,S
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pla
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sta 1,S
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rtl
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end
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****************************************************************
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*
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* Short - See if label lab is within short range of instruction n
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*
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* Inputs:
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* n - instruction number
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* lab - label number
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*
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****************************************************************
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*
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Short start
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elSize equ 12 size of npeep array element
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peep_opcode equ 0 disp in nativeType of opcode
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peep_mode equ 2 disp in nativeType of mode
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peep_operand equ 4 disp in nativeType of operand
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peep_name equ 6 disp in nativeType of name
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peep_flags equ 10 disp in nativeType of flags
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d_lab equ 256 label op code #
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len equ 0
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i equ 2
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subroutine (2:n,2:lab),4
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stz len len := 0;
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lda n i := n-1;
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dec a while i > 0 do begin
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dec a
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ldx #elSize
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jsl ~mul2
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tax
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bmi lb3
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lb1 lda nPeep+peep_opcode,X if npeep[i].opcode = d_lab then
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cmp #d_lab
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bne lb2
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lda nPeep+peep_operand,X if npeep[i].operand = lab then begin
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cmp lab
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bne lb2
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stz fn Short := len <= 126;
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lda len
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cmp #127
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bge lab1
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inc fn
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bra lab1 goto 1;
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lb2 anop end;
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lda nPeep+peep_opcode,X len := len+size[npeep[i].mode];
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tay
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lda size,Y
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and #$00FF
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clc
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adc len
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sta len
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txa i := i-1;
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sec
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sbc #elSize
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tax
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bpl lb1 end; {while}
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lb3 stz len len := 0;
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lda n i := n+1;
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ldx #elSize
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jsl ~mul2
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tax
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lda n
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inc a
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sta i
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lb4 lda i while i < nnextspot do begin
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cmp nNextSpot
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bge lb6
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lda nPeep+peep_opcode,X if npeep[i].opcode = d_lab then
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cmp #d_lab
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bne lb5
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lda nPeep+peep_operand,X if npeep[i].operand = lab then begin
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cmp lab
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bne lb5
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stz fn Short := len < 128;
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lda len
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cmp #128
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bge lab1
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inc fn
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bra lab1 goto 1;
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lb5 anop end;
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lda nPeep+peep_opcode,X len := len+size[npeep[i].mode];
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tay
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lda size,Y
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and #$00FF
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clc
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adc len
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sta len
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inc i i := i+1;
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txa
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clc
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adc #elSize
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tax
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bra lb4 end; {while}
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lb6 stz fn Short := false;
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lab1 anop 1:end; {Short}
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return 2:fn
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fn ds 2 function return value
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size dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'3,2,4,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'1,2,2,2,3,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,3,2,2,2,1,3,1,1,4,3,3,4'
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dc i1'1,2,3,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,3,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'3,2,3,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'3,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'3,2,2,2,2,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'2,2,2,2,3,2,2,2,1,3,1,1,3,3,3,4'
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dc i1'0,0,1,2,0,2,0,255'
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end
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