kopia lustrzana https://github.com/maccasoft/z80-tools
42 wiersze
1.0 KiB
Java
42 wiersze
1.0 KiB
Java
package nl.grauw.glass.instructions;
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import nl.grauw.glass.Scope;
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import nl.grauw.glass.expressions.Expression;
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import nl.grauw.glass.expressions.Register;
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import nl.grauw.glass.expressions.Schema;
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public class Push extends InstructionFactory {
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@Override
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public InstructionObject createObject(Scope context, Expression arguments) {
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if (Push_RR.ARGUMENTS.check(arguments))
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return new Push_RR(context, arguments.getElement(0));
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throw new ArgumentException();
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}
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public static class Push_RR extends InstructionObject {
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public static Schema ARGUMENTS = new Schema(Schema.DIRECT_RR_AF_INDEX);
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Expression argument;
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public Push_RR(Scope context, Expression argument) {
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super(context);
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this.argument = argument;
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}
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@Override
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public int getSize() {
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return indexifyDirect(argument.getRegister(), 1);
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}
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@Override
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public byte[] getBytes() {
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Register register = argument.getRegister();
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return indexifyDirect(register, (byte)(0xC5 | register.get16BitCode() << 4));
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}
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}
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}
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