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more forloop asm
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Irmen de Jong
parent
77c1376d6d
commit
1de0ebb7bc
@ -279,8 +279,8 @@ $endLabel inx""")
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sta $loopLabel+1
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sty $loopLabel+2
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$loopLabel lda ${65535.toHex()} ; modified
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beq $endLabel""")
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asmgen.out(" sta ${asmgen.asmIdentifierName(stmt.loopVar)}")
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beq $endLabel
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sta ${asmgen.asmIdentifierName(stmt.loopVar)}""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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inc $loopLabel+1
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@ -290,60 +290,64 @@ $loopLabel lda ${65535.toHex()} ; modified
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$endLabel""")
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}
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DataType.ARRAY_UB, DataType.ARRAY_B -> {
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// TODO: optimize loop code when the length of the array is 255 or less instead of 256
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val length = decl.arraysize!!.size()!!
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val counterLabel = asmgen.makeLabel("for_counter") // todo allocate dynamically, zero page preferred if len >= 16
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val modifiedLabel = asmgen.makeLabel("for_modified")
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val indexVar = asmgen.makeLabel("for_index") // TODO allocate dynamically, zero page preferred if length >= 16
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asmgen.out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $modifiedLabel+1
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sty $modifiedLabel+2
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ldy #0
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$loopLabel sty $counterLabel
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$modifiedLabel lda ${65535.toHex()},y ; modified""")
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asmgen.out(" sta ${asmgen.asmIdentifierName(stmt.loopVar)}")
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$loopLabel sty $indexVar
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lda $iterableName,y
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sta ${asmgen.asmIdentifierName(stmt.loopVar)}""")
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asmgen.translate(stmt.body)
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if(length<=255) {
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asmgen.out("""
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ldy $indexVar
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iny
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cpy #$length
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beq $endLabel
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bne $loopLabel""")
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} else {
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// length is 256
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asmgen.out("""
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ldy $indexVar
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iny
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bne $loopLabel
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beq $endLabel""")
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}
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asmgen.out("""
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ldy $counterLabel
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iny
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cpy #${length and 255}
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beq $endLabel
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bne $loopLabel
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$counterLabel .byte 0
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$indexVar .byte 0
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$endLabel""")
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}
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DataType.ARRAY_W, DataType.ARRAY_UW -> {
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// TODO: optimize loop code when the length of the array is 255 or less instead of 256
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val length = decl.arraysize!!.size()!! * 2
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val counterLabel = asmgen.makeLabel("for_counter") // todo allocate dynamically, zero page preferred if len >= 16
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val modifiedLabel = asmgen.makeLabel("for_modified")
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val modifiedLabel2 = asmgen.makeLabel("for_modified2")
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val indexVar = asmgen.makeLabel("for_index") // todo allocate dynamically, zero page preferred if length >= 16
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val loopvarName = asmgen.asmIdentifierName(stmt.loopVar)
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asmgen.out("""
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lda #<$iterableName
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ldy #>$iterableName
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sta $modifiedLabel+1
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sty $modifiedLabel+2
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lda #<$iterableName+1
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ldy #>$iterableName+1
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sta $modifiedLabel2+1
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sty $modifiedLabel2+2
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ldy #0
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$loopLabel sty $counterLabel
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$modifiedLabel lda ${65535.toHex()},y ; modified
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$loopLabel sty $indexVar
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lda $iterableName,y
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sta $loopvarName
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$modifiedLabel2 lda ${65535.toHex()},y ; modified
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lda $iterableName+1,y
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sta $loopvarName+1""")
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asmgen.translate(stmt.body)
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if(length<=127) {
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asmgen.out("""
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ldy $indexVar
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iny
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iny
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cpy #$length
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beq $endLabel
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bne $loopLabel""")
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} else {
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// length is 128 words, 256 bytes
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asmgen.out("""
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ldy $indexVar
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iny
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iny
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bne $loopLabel
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beq $endLabel""")
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}
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asmgen.out("""
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ldy $counterLabel
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iny
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iny
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cpy #${length and 255}
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beq $endLabel
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bne $loopLabel
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$counterLabel .byte 0
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$indexVar .byte 0
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$endLabel""")
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}
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DataType.ARRAY_F -> {
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@ -6,51 +6,48 @@
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main {
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sub start() {
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; byte[] data = [11,22,33,44,55,66]
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; word[] dataw = [1111,2222,3333,4444,5555,6666]
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;
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; byte d
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; word w
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;
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; for d in data {
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; c64scr.print_b(d)
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; c64.CHROUT(',')
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; }
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; c64.CHROUT('\n')
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; for w in dataw {
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; c64scr.print_w(w)
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; c64.CHROUT(',')
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; }
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; c64.CHROUT('\n')
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byte[] data = [11,22,33,44,55,66]
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ubyte[256] data256 = 1
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word[] dataw = [1111,2222,3333,4444,5555,6666]
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uword[128] dataw128 = 1
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ubyte u
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byte d
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word w
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uword uw
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ubyte bb
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ubyte from = 10
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ubyte end = 20
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for bb in from to end step 3 {
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c64scr.print_ub(bb)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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for bb in end to from step -3 {
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c64scr.print_ub(bb)
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for u in "hello" {
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c64scr.print_ub(u)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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word ww
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word fromw = -10
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word endw = 21
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for ww in fromw to endw step 3 {
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c64scr.print_w(ww)
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for d in data {
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c64scr.print_b(d)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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for ww in endw to fromw step -3 {
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c64scr.print_w(ww)
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data256[0]=0
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data256[254]=254
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data256[255]=255
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for u in data256 {
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c64scr.print_ub(u)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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for w in dataw {
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c64scr.print_w(w)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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dataw128[0] = 0
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dataw128[126] =126
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dataw128[127] =127
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for uw in dataw128 {
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c64scr.print_uw(uw)
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c64.CHROUT(',')
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}
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c64.CHROUT('\n')
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