146 lines
5.3 KiB
Ruby
146 lines
5.3 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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compiler = compiler_for(:Integer,:div4 ,{})
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compiler.compiler_builder(compiler.source).build do
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integer << message[:receiver]
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integer.reduce_int
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integer_reg << 2
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integer.op :>> , integer_reg
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add_new_int("div4", integer , integer_reg)
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message[:return_value] << integer_reg
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end
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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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builder.build do
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integer << message[:receiver]
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integer_reg << message[:arguments]
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integer_reg << integer_reg[ 1]
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integer.reduce_int
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integer_reg.reduce_int
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swap_names(:integer , :integer_reg) if(operator.to_s.start_with?('<') )
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integer.op :- , integer_reg
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if_minus false_label
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if_zero( false_label ) if operator.to_s.length == 1
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object << Parfait.object_space.true_object
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branch merge_label
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add_code false_label
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object << Parfait.object_space.false_object
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add_code merge_label
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message[:return_value] << object
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end
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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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builder.build do
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integer << message[:receiver]
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integer_reg << message[:arguments]
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integer_reg << integer_reg[ 1]
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integer.reduce_int
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integer_reg.reduce_int
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integer.op op_sym , integer_reg
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add_new_int op_sym.to_s , integer , integer_reg
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message[:return_value] << integer_reg
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end
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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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