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https://github.com/irmen/prog8.git
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little refactor of huge if statement
This commit is contained in:
Irmen de Jong
parent
da57f76de3
commit
b717f1c7eb
@ -388,88 +388,389 @@ internal class AssignmentAsmGen(private val program: PtProgram,
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if(expr.type !in IntegerDatatypes)
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return false
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if(expr.operator in setOf("&", "|", "^", "and", "or", "xor")) {
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if (expr.left.type in ByteDatatypes && expr.right.type in ByteDatatypes) {
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if (expr.right.isSimple()) {
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if (expr.right is PtNumber || expr.right is PtIdentifier) {
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assignLogicalWithSimpleRightOperandByte(assign.target, expr.left, expr.operator, expr.right)
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return true
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}
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else if (expr.left is PtNumber || expr.left is PtIdentifier) {
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assignLogicalWithSimpleRightOperandByte(assign.target, expr.right, expr.operator, expr.left)
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return true
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}
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}
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if(expr.operator in setOf("&", "|", "^", "and", "or", "xor"))
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return optimizedLogicalOrBitwiseExpr(expr, assign.target)
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if(expr.operator == "==" || expr.operator == "!=")
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return optimizedEqualityExpr(expr, assign.target)
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if(expr.operator=="+" || expr.operator=="-")
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return optimizedPlusMinExpr(expr, assign.target)
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if(expr.operator=="<<" || expr.operator==">>")
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return optimizedBitshiftExpr(expr, assign.target)
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if(expr.operator=="*")
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return optimizedMultiplyExpr(expr, assign.target)
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if(expr.operator=="/")
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return optimizedDivideExpr(expr, assign.target)
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if(expr.operator=="%")
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return optimizedRemainderExpr(expr, assign.target)
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return false
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}
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private fun optimizedRemainderExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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when(expr.type) {
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DataType.UBYTE -> {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
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asmgen.saveRegisterStack(CpuRegister.A, false)
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assignExpressionToVariable(expr.right, "P8ZP_SCRATCH_B1", DataType.UBYTE)
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asmgen.restoreRegisterStack(CpuRegister.A, false)
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when (expr.operator) {
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"&", "and" -> asmgen.out(" and P8ZP_SCRATCH_B1")
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"|", "or" -> asmgen.out(" ora P8ZP_SCRATCH_B1")
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"^", "xor" -> asmgen.out(" eor P8ZP_SCRATCH_B1")
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else -> throw AssemblyError("invalid operator")
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}
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assignRegisterByte(assign.target, CpuRegister.A, false)
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asmgen.out(" pha")
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assignExpressionToRegister(expr.right, RegisterOrPair.Y, false)
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asmgen.out(" pla | jsr math.divmod_ub_asm")
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if(target.register==RegisterOrPair.A)
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asmgen.out(" cmp #0") // fix the status register
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else
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assignRegisterByte(target, CpuRegister.A, false)
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return true
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}
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else if (expr.left.type in WordDatatypes && expr.right.type in WordDatatypes) {
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if (expr.right.isSimple()) {
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if (expr.right is PtNumber || expr.right is PtIdentifier) {
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assignLogicalWithSimpleRightOperandWord(assign.target, expr.left, expr.operator, expr.right)
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return true
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}
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else if (expr.left is PtNumber || expr.left is PtIdentifier) {
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assignLogicalWithSimpleRightOperandWord(assign.target, expr.right, expr.operator, expr.left)
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return true
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}
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}
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asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
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when (expr.operator) {
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"&", "and" -> asmgen.out(" and P8ZP_SCRATCH_W1 | pha | tya | and P8ZP_SCRATCH_W1+1 | tay | pla")
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"|", "or" -> asmgen.out(" ora P8ZP_SCRATCH_W1 | pha | tya | ora P8ZP_SCRATCH_W1+1 | tay | pla")
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"^", "xor" -> asmgen.out(" eor P8ZP_SCRATCH_W1 | pha | tya | eor P8ZP_SCRATCH_W1+1 | tay | pla")
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else -> throw AssemblyError("invalid operator")
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}
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assignRegisterpairWord(assign.target, RegisterOrPair.AY)
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DataType.UWORD -> {
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asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
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asmgen.out(" jsr math.divmod_uw_asm")
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assignVariableWord(target, "P8ZP_SCRATCH_W2")
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return true
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}
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return false
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else -> return false
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}
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}
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if(expr.operator == "==" || expr.operator == "!=") {
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// expression datatype is BOOL (ubyte) but operands can be anything
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if(expr.left.type in ByteDatatypes && expr.right.type in ByteDatatypes &&
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expr.left.isSimple() && expr.right.isSimple()) {
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private fun optimizedDivideExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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when(expr.type) {
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DataType.UBYTE -> {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
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asmgen.saveRegisterStack(CpuRegister.A, false)
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assignExpressionToVariable(expr.right, "P8ZP_SCRATCH_B1", DataType.UBYTE)
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asmgen.restoreRegisterStack(CpuRegister.A, false)
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if(expr.operator=="==") {
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asmgen.out(" pha")
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assignExpressionToRegister(expr.right, RegisterOrPair.Y, false)
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asmgen.out(" pla | jsr math.divmod_ub_asm")
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assignRegisterByte(target, CpuRegister.Y, false)
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return true
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}
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DataType.BYTE -> {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, true)
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asmgen.out(" pha")
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assignExpressionToRegister(expr.right, RegisterOrPair.Y, true)
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asmgen.out(" pla | jsr math.divmod_b_asm")
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assignRegisterByte(target, CpuRegister.Y, true)
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return true
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}
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DataType.UWORD -> {
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asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
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asmgen.out(" jsr math.divmod_uw_asm")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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DataType.WORD -> {
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asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
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asmgen.out(" jsr math.divmod_w_asm")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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else -> return false
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}
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}
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private fun optimizedMultiplyExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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val value = expr.right.asConstInteger()
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if(value==null) {
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when(expr.type) {
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in ByteDatatypes -> {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, expr.type in SignedDatatypes)
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asmgen.out(" pha")
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assignExpressionToRegister(expr.right, RegisterOrPair.Y, expr.type in SignedDatatypes)
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asmgen.out(" pla | jsr math.multiply_bytes")
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assignRegisterByte(target, CpuRegister.A, false)
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return true
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}
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in WordDatatypes -> {
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asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
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asmgen.out(" jsr math.multiply_words")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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else -> return false
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}
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} else {
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when (expr.type) {
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in ByteDatatypes -> {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, expr.type in SignedDatatypes)
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if (value in asmgen.optimizedByteMultiplications)
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asmgen.out(" jsr math.mul_byte_${value}")
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else
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asmgen.out(" ldy #$value | jsr math.multiply_bytes")
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assignRegisterByte(target, CpuRegister.A, false)
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return true
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}
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in WordDatatypes -> {
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if (value in asmgen.optimizedWordMultiplications) {
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assignExpressionToRegister(expr.left, RegisterOrPair.AY, expr.type in SignedDatatypes)
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asmgen.out(" jsr math.mul_word_${value}")
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}
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else {
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asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
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asmgen.out(" jsr math.multiply_words")
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}
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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else -> return false
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}
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}
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}
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private fun optimizedBitshiftExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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val shifts = expr.right.asConstInteger()
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if(shifts!=null) {
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val dt = expr.left.type
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if(dt in ByteDatatypes && shifts in 0..7) {
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val signed = dt == DataType.BYTE
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assignExpressionToRegister(expr.left, RegisterOrPair.A, signed)
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if(expr.operator=="<<") {
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repeat(shifts) {
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asmgen.out(" asl a")
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}
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} else {
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if(signed && shifts>0) {
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asmgen.out(" ldy #$shifts | jsr math.lsr_byte_A")
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} else {
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repeat(shifts) {
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asmgen.out(" lsr a")
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}
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}
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}
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assignRegisterByte(target, CpuRegister.A, signed)
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return true
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} else if(dt in WordDatatypes && shifts in 0..7) {
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val signed = dt == DataType.WORD
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assignExpressionToRegister(expr.left, RegisterOrPair.AY, signed)
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if(expr.operator=="<<") {
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if(shifts>0) {
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asmgen.out(" sty P8ZP_SCRATCH_B1")
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repeat(shifts) {
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asmgen.out(" asl a | rol P8ZP_SCRATCH_B1")
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}
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asmgen.out(" ldy P8ZP_SCRATCH_B1")
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}
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} else {
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if(signed) {
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// TODO("shift AY >> $shifts signed")
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return false
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} else {
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if(shifts>0) {
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asmgen.out(" sty P8ZP_SCRATCH_B1")
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repeat(shifts) {
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asmgen.out(" lsr P8ZP_SCRATCH_B1 | ror a")
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}
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asmgen.out(" ldy P8ZP_SCRATCH_B1")
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}
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}
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}
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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}
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return false
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}
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private fun optimizedPlusMinExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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val dt = expr.type
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val left = expr.left
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val right = expr.right
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if(dt in ByteDatatypes) {
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when (right) {
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is PtIdentifier -> {
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assignExpressionToRegister(left, RegisterOrPair.A, dt==DataType.BYTE)
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val symname = asmgen.asmVariableName(right)
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if(expr.operator=="+")
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asmgen.out(" clc | adc $symname")
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else
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asmgen.out(" sec | sbc $symname")
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assignRegisterByte(target, CpuRegister.A, dt in SignedDatatypes)
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return true
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}
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is PtNumber -> {
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assignExpressionToRegister(left, RegisterOrPair.A, dt==DataType.BYTE)
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if(expr.operator=="+")
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asmgen.out(" clc | adc #${right.number.toHex()}")
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else
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asmgen.out(" sec | sbc #${right.number.toHex()}")
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assignRegisterByte(target, CpuRegister.A, dt in SignedDatatypes)
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return true
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}
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else -> {
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assignExpressionToRegister(left, RegisterOrPair.A, left.type==DataType.BYTE)
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asmgen.out(" pha")
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assignExpressionToVariable(right, "P8ZP_SCRATCH_B1", right.type)
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asmgen.out(" pla")
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if(expr.operator=="+")
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asmgen.out(" clc | adc P8ZP_SCRATCH_B1")
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else
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asmgen.out(" sec | sbc P8ZP_SCRATCH_B1")
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assignRegisterByte(target, CpuRegister.A, dt in SignedDatatypes)
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return true
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}
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}
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} else if(dt in WordDatatypes) {
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fun doAddOrSubWordExpr() {
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asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
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if(expr.operator=="+")
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asmgen.out("""
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clc
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adc P8ZP_SCRATCH_W1
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pha
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tya
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adc P8ZP_SCRATCH_W1+1
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tay
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pla""")
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else
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asmgen.out("""
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sec
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sbc P8ZP_SCRATCH_W1
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pha
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tya
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sbc P8ZP_SCRATCH_W1+1
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tay
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pla""")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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}
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when (right) {
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is PtAddressOf -> {
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assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
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val symbol = asmgen.asmVariableName(right.identifier)
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if(expr.operator=="+")
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asmgen.out("""
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clc
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adc #<$symbol
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pha
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tya
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adc #>$symbol
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tay
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pla""")
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else
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asmgen.out("""
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sec
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sbc #<$symbol
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pha
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tya
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sbc #>$symbol
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tay
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pla""")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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is PtIdentifier -> {
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val symname = asmgen.asmVariableName(right)
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assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
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if(expr.operator=="+")
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asmgen.out("""
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clc
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adc $symname
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pha
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tya
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adc $symname+1
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tay
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pla""")
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else
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asmgen.out("""
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sec
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sbc $symname
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pha
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tya
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sbc $symname+1
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tay
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pla""")
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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is PtNumber -> {
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assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
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if(expr.operator=="+") {
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asmgen.out("""
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clc
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adc #<${right.number.toHex()}
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pha
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tya
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adc #>${right.number.toHex()}
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tay
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pla""")
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} else if(expr.operator=="-") {
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asmgen.out("""
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sec
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sbc #<${right.number.toHex()}
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pha
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tya
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sbc #>${right.number.toHex()}
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tay
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pla""")
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}
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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is PtTypeCast -> {
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val castedValue = right.value
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if(right.type in WordDatatypes && castedValue.type in ByteDatatypes && castedValue is PtIdentifier) {
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val castedSymname = asmgen.asmVariableName(castedValue)
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assignExpressionToRegister(left, RegisterOrPair.AY, dt == DataType.WORD)
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if (expr.operator == "+")
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asmgen.out(
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"""
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clc
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adc $castedSymname
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bcc +
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iny
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+"""
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)
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else
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asmgen.out(
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"""
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sec
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sbc $castedSymname
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bcs +
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dey
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+"""
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)
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assignRegisterpairWord(target, RegisterOrPair.AY)
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return true
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}
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doAddOrSubWordExpr()
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return true
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}
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else -> {
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doAddOrSubWordExpr()
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return true
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}
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}
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}
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return false
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}
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private fun optimizedEqualityExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
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// expression datatype is BOOL (ubyte) but operands can be anything
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if(expr.left.type in ByteDatatypes && expr.right.type in ByteDatatypes &&
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expr.left.isSimple() && expr.right.isSimple()) {
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assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
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asmgen.saveRegisterStack(CpuRegister.A, false)
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assignExpressionToVariable(expr.right, "P8ZP_SCRATCH_B1", DataType.UBYTE)
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asmgen.restoreRegisterStack(CpuRegister.A, false)
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if(expr.operator=="==") {
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asmgen.out("""
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cmp P8ZP_SCRATCH_B1
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bne +
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lda #1
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bne ++
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+ lda #0
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+""")
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} else {
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asmgen.out("""
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} else {
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asmgen.out("""
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cmp P8ZP_SCRATCH_B1
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beq +
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lda #1
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bne ++
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+ lda #0
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+""")
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}
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assignRegisterByte(assign.target, CpuRegister.A, false)
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return true
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} else if(expr.left.type in WordDatatypes && expr.right.type in WordDatatypes &&
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expr.left.isSimple() && expr.right.isSimple()) {
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asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
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if(expr.operator=="==") {
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asmgen.out("""
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}
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assignRegisterByte(target, CpuRegister.A, false)
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return true
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} else if(expr.left.type in WordDatatypes && expr.right.type in WordDatatypes &&
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expr.left.isSimple() && expr.right.isSimple()) {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
|
||||
if(expr.operator=="==") {
|
||||
asmgen.out("""
|
||||
cmp P8ZP_SCRATCH_W1
|
||||
bne +
|
||||
cpy P8ZP_SCRATCH_W1+1
|
||||
@ -478,8 +779,8 @@ internal class AssignmentAsmGen(private val program: PtProgram,
|
||||
bne ++
|
||||
+ lda #0
|
||||
+""")
|
||||
} else {
|
||||
asmgen.out("""
|
||||
} else {
|
||||
asmgen.out("""
|
||||
cmp P8ZP_SCRATCH_W1
|
||||
bne +
|
||||
cpy P8ZP_SCRATCH_W1+1
|
||||
@ -488,339 +789,60 @@ internal class AssignmentAsmGen(private val program: PtProgram,
|
||||
beq ++
|
||||
+ lda #1
|
||||
+""")
|
||||
}
|
||||
assignRegisterByte(assign.target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
return false
|
||||
assignRegisterByte(target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
else if(expr.operator=="+" || expr.operator=="-") {
|
||||
val dt = expr.type
|
||||
val left = expr.left
|
||||
val right = expr.right
|
||||
if(dt in ByteDatatypes) {
|
||||
when (right) {
|
||||
is PtIdentifier -> {
|
||||
assignExpressionToRegister(left, RegisterOrPair.A, dt==DataType.BYTE)
|
||||
val symname = asmgen.asmVariableName(right)
|
||||
if(expr.operator=="+")
|
||||
asmgen.out(" clc | adc $symname")
|
||||
else
|
||||
asmgen.out(" sec | sbc $symname")
|
||||
assignRegisterByte(assign.target, CpuRegister.A, dt in SignedDatatypes)
|
||||
return true
|
||||
}
|
||||
is PtNumber -> {
|
||||
assignExpressionToRegister(left, RegisterOrPair.A, dt==DataType.BYTE)
|
||||
if(expr.operator=="+")
|
||||
asmgen.out(" clc | adc #${right.number.toHex()}")
|
||||
else
|
||||
asmgen.out(" sec | sbc #${right.number.toHex()}")
|
||||
assignRegisterByte(assign.target, CpuRegister.A, dt in SignedDatatypes)
|
||||
return true
|
||||
}
|
||||
else -> {
|
||||
assignExpressionToRegister(left, RegisterOrPair.A, left.type==DataType.BYTE)
|
||||
asmgen.out(" pha")
|
||||
assignExpressionToVariable(right, "P8ZP_SCRATCH_B1", right.type)
|
||||
asmgen.out(" pla")
|
||||
if(expr.operator=="+")
|
||||
asmgen.out(" clc | adc P8ZP_SCRATCH_B1")
|
||||
else
|
||||
asmgen.out(" sec | sbc P8ZP_SCRATCH_B1")
|
||||
assignRegisterByte(assign.target, CpuRegister.A, dt in SignedDatatypes)
|
||||
return true
|
||||
}
|
||||
}
|
||||
} else if(dt in WordDatatypes) {
|
||||
return false
|
||||
}
|
||||
|
||||
fun doAddOrSubWordExpr() {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
|
||||
if(expr.operator=="+")
|
||||
asmgen.out("""
|
||||
clc
|
||||
adc P8ZP_SCRATCH_W1
|
||||
pha
|
||||
tya
|
||||
adc P8ZP_SCRATCH_W1+1
|
||||
tay
|
||||
pla""")
|
||||
else
|
||||
asmgen.out("""
|
||||
sec
|
||||
sbc P8ZP_SCRATCH_W1
|
||||
pha
|
||||
tya
|
||||
sbc P8ZP_SCRATCH_W1+1
|
||||
tay
|
||||
pla""")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
private fun optimizedLogicalOrBitwiseExpr(expr: PtBinaryExpression, target: AsmAssignTarget): Boolean {
|
||||
if (expr.left.type in ByteDatatypes && expr.right.type in ByteDatatypes) {
|
||||
if (expr.right.isSimple()) {
|
||||
if (expr.right is PtNumber || expr.right is PtIdentifier) {
|
||||
assignLogicalWithSimpleRightOperandByte(target, expr.left, expr.operator, expr.right)
|
||||
return true
|
||||
}
|
||||
else if (expr.left is PtNumber || expr.left is PtIdentifier) {
|
||||
assignLogicalWithSimpleRightOperandByte(target, expr.right, expr.operator, expr.left)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
when (right) {
|
||||
is PtAddressOf -> {
|
||||
assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
|
||||
val symbol = asmgen.asmVariableName(right.identifier)
|
||||
if(expr.operator=="+")
|
||||
asmgen.out("""
|
||||
clc
|
||||
adc #<$symbol
|
||||
pha
|
||||
tya
|
||||
adc #>$symbol
|
||||
tay
|
||||
pla""")
|
||||
else
|
||||
asmgen.out("""
|
||||
sec
|
||||
sbc #<$symbol
|
||||
pha
|
||||
tya
|
||||
sbc #>$symbol
|
||||
tay
|
||||
pla""")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
is PtIdentifier -> {
|
||||
val symname = asmgen.asmVariableName(right)
|
||||
assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
|
||||
if(expr.operator=="+")
|
||||
asmgen.out("""
|
||||
clc
|
||||
adc $symname
|
||||
pha
|
||||
tya
|
||||
adc $symname+1
|
||||
tay
|
||||
pla""")
|
||||
else
|
||||
asmgen.out("""
|
||||
sec
|
||||
sbc $symname
|
||||
pha
|
||||
tya
|
||||
sbc $symname+1
|
||||
tay
|
||||
pla""")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
is PtNumber -> {
|
||||
assignExpressionToRegister(left, RegisterOrPair.AY, dt==DataType.WORD)
|
||||
if(expr.operator=="+") {
|
||||
asmgen.out("""
|
||||
clc
|
||||
adc #<${right.number.toHex()}
|
||||
pha
|
||||
tya
|
||||
adc #>${right.number.toHex()}
|
||||
tay
|
||||
pla""")
|
||||
} else if(expr.operator=="-") {
|
||||
asmgen.out("""
|
||||
sec
|
||||
sbc #<${right.number.toHex()}
|
||||
pha
|
||||
tya
|
||||
sbc #>${right.number.toHex()}
|
||||
tay
|
||||
pla""")
|
||||
}
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
is PtTypeCast -> {
|
||||
val castedValue = right.value
|
||||
if(right.type in WordDatatypes && castedValue.type in ByteDatatypes && castedValue is PtIdentifier) {
|
||||
val castedSymname = asmgen.asmVariableName(castedValue)
|
||||
assignExpressionToRegister(left, RegisterOrPair.AY, dt == DataType.WORD)
|
||||
if (expr.operator == "+")
|
||||
asmgen.out(
|
||||
"""
|
||||
clc
|
||||
adc $castedSymname
|
||||
bcc +
|
||||
iny
|
||||
+"""
|
||||
)
|
||||
else
|
||||
asmgen.out(
|
||||
"""
|
||||
sec
|
||||
sbc $castedSymname
|
||||
bcs +
|
||||
dey
|
||||
+"""
|
||||
)
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
doAddOrSubWordExpr()
|
||||
return true
|
||||
}
|
||||
else -> {
|
||||
doAddOrSubWordExpr()
|
||||
return true
|
||||
}
|
||||
}
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
|
||||
asmgen.saveRegisterStack(CpuRegister.A, false)
|
||||
assignExpressionToVariable(expr.right, "P8ZP_SCRATCH_B1", DataType.UBYTE)
|
||||
asmgen.restoreRegisterStack(CpuRegister.A, false)
|
||||
when (expr.operator) {
|
||||
"&", "and" -> asmgen.out(" and P8ZP_SCRATCH_B1")
|
||||
"|", "or" -> asmgen.out(" ora P8ZP_SCRATCH_B1")
|
||||
"^", "xor" -> asmgen.out(" eor P8ZP_SCRATCH_B1")
|
||||
else -> throw AssemblyError("invalid operator")
|
||||
}
|
||||
assignRegisterByte(target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
else if(expr.operator=="<<" || expr.operator==">>") {
|
||||
val shifts = expr.right.asConstInteger()
|
||||
if(shifts!=null) {
|
||||
val dt = expr.left.type
|
||||
if(dt in ByteDatatypes && shifts in 0..7) {
|
||||
val signed = dt == DataType.BYTE
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, signed)
|
||||
if(expr.operator=="<<") {
|
||||
repeat(shifts) {
|
||||
asmgen.out(" asl a")
|
||||
}
|
||||
} else {
|
||||
if(signed && shifts>0) {
|
||||
asmgen.out(" ldy #$shifts | jsr math.lsr_byte_A")
|
||||
} else {
|
||||
repeat(shifts) {
|
||||
asmgen.out(" lsr a")
|
||||
}
|
||||
}
|
||||
}
|
||||
assignRegisterByte(assign.target, CpuRegister.A, signed)
|
||||
else if (expr.left.type in WordDatatypes && expr.right.type in WordDatatypes) {
|
||||
if (expr.right.isSimple()) {
|
||||
if (expr.right is PtNumber || expr.right is PtIdentifier) {
|
||||
assignLogicalWithSimpleRightOperandWord(target, expr.left, expr.operator, expr.right)
|
||||
return true
|
||||
} else if(dt in WordDatatypes && shifts in 0..7) {
|
||||
val signed = dt == DataType.WORD
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.AY, signed)
|
||||
if(expr.operator=="<<") {
|
||||
if(shifts>0) {
|
||||
asmgen.out(" sty P8ZP_SCRATCH_B1")
|
||||
repeat(shifts) {
|
||||
asmgen.out(" asl a | rol P8ZP_SCRATCH_B1")
|
||||
}
|
||||
asmgen.out(" ldy P8ZP_SCRATCH_B1")
|
||||
}
|
||||
} else {
|
||||
if(signed) {
|
||||
// TODO("shift AY >> $shifts signed")
|
||||
return false
|
||||
} else {
|
||||
if(shifts>0) {
|
||||
asmgen.out(" sty P8ZP_SCRATCH_B1")
|
||||
repeat(shifts) {
|
||||
asmgen.out(" lsr P8ZP_SCRATCH_B1 | ror a")
|
||||
}
|
||||
asmgen.out(" ldy P8ZP_SCRATCH_B1")
|
||||
}
|
||||
}
|
||||
}
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
}
|
||||
else if (expr.left is PtNumber || expr.left is PtIdentifier) {
|
||||
assignLogicalWithSimpleRightOperandWord(target, expr.right, expr.operator, expr.left)
|
||||
return true
|
||||
}
|
||||
}
|
||||
}
|
||||
else if(expr.operator=="*") {
|
||||
val value = expr.right.asConstInteger()
|
||||
if(value==null) {
|
||||
when(expr.type) {
|
||||
in ByteDatatypes -> {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, expr.type in SignedDatatypes)
|
||||
asmgen.out(" pha")
|
||||
assignExpressionToRegister(expr.right, RegisterOrPair.Y, expr.type in SignedDatatypes)
|
||||
asmgen.out(" pla | jsr math.multiply_bytes")
|
||||
assignRegisterByte(assign.target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
in WordDatatypes -> {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
|
||||
asmgen.out(" jsr math.multiply_words")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
else -> return false
|
||||
}
|
||||
} else {
|
||||
when (expr.type) {
|
||||
in ByteDatatypes -> {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, expr.type in SignedDatatypes)
|
||||
if (value in asmgen.optimizedByteMultiplications)
|
||||
asmgen.out(" jsr math.mul_byte_${value}")
|
||||
else
|
||||
asmgen.out(" ldy #$value | jsr math.multiply_bytes")
|
||||
assignRegisterByte(assign.target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
in WordDatatypes -> {
|
||||
if (value in asmgen.optimizedWordMultiplications) {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.AY, expr.type in SignedDatatypes)
|
||||
asmgen.out(" jsr math.mul_word_${value}")
|
||||
}
|
||||
else {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
|
||||
asmgen.out(" jsr math.multiply_words")
|
||||
}
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
else -> return false
|
||||
}
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.left, expr.right, "P8ZP_SCRATCH_W1")
|
||||
when (expr.operator) {
|
||||
"&", "and" -> asmgen.out(" and P8ZP_SCRATCH_W1 | pha | tya | and P8ZP_SCRATCH_W1+1 | tay | pla")
|
||||
"|", "or" -> asmgen.out(" ora P8ZP_SCRATCH_W1 | pha | tya | ora P8ZP_SCRATCH_W1+1 | tay | pla")
|
||||
"^", "xor" -> asmgen.out(" eor P8ZP_SCRATCH_W1 | pha | tya | eor P8ZP_SCRATCH_W1+1 | tay | pla")
|
||||
else -> throw AssemblyError("invalid operator")
|
||||
}
|
||||
assignRegisterpairWord(target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
else if(expr.operator=="/") {
|
||||
when(expr.type) {
|
||||
DataType.UBYTE -> {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
|
||||
asmgen.out(" pha")
|
||||
assignExpressionToRegister(expr.right, RegisterOrPair.Y, false)
|
||||
asmgen.out(" pla | jsr math.divmod_ub_asm")
|
||||
assignRegisterByte(assign.target, CpuRegister.Y, false)
|
||||
return true
|
||||
}
|
||||
DataType.BYTE -> {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, true)
|
||||
asmgen.out(" pha")
|
||||
assignExpressionToRegister(expr.right, RegisterOrPair.Y, true)
|
||||
asmgen.out(" pla | jsr math.divmod_b_asm")
|
||||
assignRegisterByte(assign.target, CpuRegister.Y, true)
|
||||
return true
|
||||
}
|
||||
DataType.UWORD -> {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
|
||||
asmgen.out(" jsr math.divmod_uw_asm")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
DataType.WORD -> {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
|
||||
asmgen.out(" jsr math.divmod_w_asm")
|
||||
assignRegisterpairWord(assign.target, RegisterOrPair.AY)
|
||||
return true
|
||||
}
|
||||
else -> return false
|
||||
}
|
||||
}
|
||||
else if(expr.operator=="%") {
|
||||
when(expr.type) {
|
||||
DataType.UBYTE -> {
|
||||
assignExpressionToRegister(expr.left, RegisterOrPair.A, false)
|
||||
asmgen.out(" pha")
|
||||
assignExpressionToRegister(expr.right, RegisterOrPair.Y, false)
|
||||
asmgen.out(" pla | jsr math.divmod_ub_asm")
|
||||
if(assign.target.register==RegisterOrPair.A)
|
||||
asmgen.out(" cmp #0") // fix the status register
|
||||
else
|
||||
assignRegisterByte(assign.target, CpuRegister.A, false)
|
||||
return true
|
||||
}
|
||||
DataType.UWORD -> {
|
||||
asmgen.assignWordOperandsToAYAndVar(expr.right, expr.left, "P8ZP_SCRATCH_W1")
|
||||
asmgen.out(" jsr math.divmod_uw_asm")
|
||||
assignVariableWord(assign.target, "P8ZP_SCRATCH_W2")
|
||||
return true
|
||||
}
|
||||
else -> return false
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
@ -3,16 +3,11 @@
|
||||
|
||||
main
|
||||
{
|
||||
; 00f9
|
||||
sub start()
|
||||
{
|
||||
word bb
|
||||
|
||||
when bb {
|
||||
0,1,22 -> bb+=10
|
||||
33,44,55 -> bb+=20
|
||||
42345 -> bb+=99
|
||||
else -> bb+=30
|
||||
}
|
||||
; uword zc = $ea31
|
||||
word zc = -5583
|
||||
cx16.r1L = (zc>>10) as ubyte
|
||||
txt.print_ub(cx16.r1L) ; 250
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user