144 lines
6.0 KiB
Ruby
144 lines
6.0 KiB
Ruby
#integer related kernel functions
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module Risc
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module Builtin
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module Integer
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module ClassMethods
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include CompileHelper
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def div4(context)
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source = "div4"
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compiler = compiler_for(:Integer,:div4 ,{})
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builder = compiler.compiler_builder(compiler.source)
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me = builder.add_known( :receiver )
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builder.reduce_int( source , me )
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two = compiler.use_reg :fixnum , value: 2
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builder.add_load_data( source , 2 , two )
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builder.add_code Risc.op( source , :>> , me , two)
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builder.add_new_int(source,me , two)
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builder.add_reg_to_slot( source , two , Risc.message_reg , :return_value)
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compiler.add_mom( Mom::ReturnSequence.new)
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return compiler
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end
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def >( context )
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comparison( :> )
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end
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def <( context )
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comparison( :< )
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end
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def <=( context )
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comparison( :<= )
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end
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def >=( context )
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comparison( :>= )
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end
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def comparison( operator )
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compiler = compiler_for(:Integer, operator ,{other: :Integer})
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builder = compiler.compiler_builder(compiler.source)
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me , other = builder.self_and_int_arg("#{operator} load receiver and arg")
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false_label = Risc.label(compiler.source , "false_label_#{builder.object_id.to_s(16)}")
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merge_label = Risc.label(compiler.source , "merge_label_#{builder.object_id.to_s(16)}")
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builder.reduce_int( "#{operator} fix me", me )
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builder.reduce_int( "#{operator} fix arg", other )
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if(operator.to_s.start_with?('<') )
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me , other = other , me
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end
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builder.add_code Risc.op( "#{operator} operator", :- , me , other)
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builder.add_code IsMinus.new( "#{operator} if", false_label)
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if(operator.to_s.length == 1)
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builder.add_code IsZero.new( "#{operator} if", false_label)
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end
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builder.add_load_constant("#{operator} new int", Parfait.object_space.true_object , other)
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builder.add_code Risc::Branch.new("jump over false", merge_label)
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builder.add_code false_label
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builder.add_load_constant("#{operator} new int", Parfait.object_space.false_object , other)
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builder.add_code merge_label
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builder.add_reg_to_slot( "#{operator} save ret" , other , Risc.message_reg , :return_value)
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compiler.add_mom( Mom::ReturnSequence.new)
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return compiler
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end
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def putint(context)
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compiler = compiler_for(:Integer,:putint ,{})
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compiler.add_mom( Mom::ReturnSequence.new)
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return compiler
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end
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def operator_method( op_sym )
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compiler = compiler_for(:Integer, op_sym ,{other: :Integer})
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builder = compiler.compiler_builder(compiler.source)
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me , other = builder.self_and_int_arg(op_sym.to_s + "load receiver and arg")
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builder.reduce_int( op_sym.to_s + " fix me", me )
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builder.reduce_int( op_sym.to_s + " fix arg", other )
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builder.add_code Risc.op( op_sym.to_s + " operator", op_sym , me , other)
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builder.add_new_int(op_sym.to_s + " new int", me , other)
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builder.add_reg_to_slot( op_sym.to_s + "save ret" , other , Risc.message_reg , :return_value)
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compiler.add_mom( Mom::ReturnSequence.new)
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return compiler
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end
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def div10( context )
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s = "div_10 "
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compiler = compiler_for(:Integer,:div10 ,{})
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builder = compiler.compiler_builder(compiler.source)
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#FIX: this could load receiver once, reduce and then transfer twice
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me = builder.add_known( :receiver )
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tmp = builder.add_known( :receiver )
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q = builder.add_known( :receiver )
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builder.reduce_int( s , me )
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builder.reduce_int( s , tmp )
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builder.reduce_int( s , q )
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const = compiler.use_reg :fixnum , value: 1
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builder.add_load_data( s , 1 , const )
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# int tmp = self >> 1
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builder.add_code Risc.op( s , :>> , tmp , const)
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# int q = self >> 2
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builder.add_load_data( s , 2 , const)
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builder.add_code Risc.op( s , :>> , q , const)
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# q = q + tmp
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builder.add_code Risc.op( s , :+ , q , tmp )
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# tmp = q >> 4
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builder.add_load_data( s , 4 , const)
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builder.add_transfer( s, q , tmp)
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builder.add_code Risc.op( s , :>> , tmp , const)
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# q = q + tmp
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builder.add_code Risc.op( s , :+ , q , tmp )
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# tmp = q >> 8
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builder.add_load_data( s , 8 , const)
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builder.add_transfer( s, q , tmp)
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builder.add_code Risc.op( s , :>> , tmp , const)
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# q = q + tmp
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builder.add_code Risc.op( s , :+ , q , tmp )
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# tmp = q >> 16
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builder.add_load_data( s , 16 , const)
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builder.add_transfer( s, q , tmp)
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builder.add_code Risc.op( s , :>> , tmp , const)
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# q = q + tmp
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builder.add_code Risc.op( s , :+ , q , tmp )
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# q = q >> 3
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builder.add_load_data( s , 3 , const)
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builder.add_code Risc.op( s , :>> , q , const)
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# tmp = q * 10
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builder.add_load_data( s , 10 , const)
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builder.add_transfer( s, q , tmp)
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builder.add_code Risc.op( s , :* , tmp , const)
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# tmp = self - tmp
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builder.add_code Risc.op( s , :- , me , tmp )
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builder.add_transfer( s , me , tmp)
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# tmp = tmp + 6
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builder.add_load_data( s , 6 , const)
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builder.add_code Risc.op( s , :+ , tmp , const )
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# tmp = tmp >> 4
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builder.add_load_data( s , 4 , const)
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builder.add_code Risc.op( s , :>> , tmp , const )
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# return q + tmp
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builder.add_code Risc.op( s , :+ , q , tmp )
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builder.add_new_int(s,q , tmp)
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builder.add_reg_to_slot( s , tmp , Risc.message_reg , :return_value)
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compiler.add_mom( Mom::ReturnSequence.new)
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return compiler
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end
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end
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extend ClassMethods
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end
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end
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end
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