56 lines
1.8 KiB
Factor
56 lines
1.8 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: compiler-backend
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USING: alien arrays assembler compiler inference kernel
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kernel-internals lists math memory namespaces sequences words ;
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M: %slot generate-node ( vop -- )
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drop
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! turn tagged fixnum slot # into an offset, multiple of 4
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0 input-operand fixnum>slot@
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! compute slot address in 0 vop-out
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dest/src ADD
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! load slot value in 0 vop-out
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0 output-operand dup 1array MOV ;
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M: %fast-slot generate-node ( vop -- )
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drop 0 output-operand 1 input-operand 0 input 2array MOV ;
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: card-offset 1 getenv ; inline
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M: %write-barrier generate-node ( vop -- )
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#! Mark the card pointed to by vreg. This could be a tad
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#! shorter on x86 (use indirect addressing instead of a
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#! scratch register) however on AMD64, you cannot do this
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#! with a 64-bit immediate. So we avoid code duplication by
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#! sacrificing a few bytes of generated code size.
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drop
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0 input-operand card-bits SHR
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0 scratch card-offset MOV 0 rel-cards
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0 scratch 0 input-operand ADD
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0 scratch 1array card-mark OR ;
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M: %set-slot generate-node ( vop -- )
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drop
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! turn tagged fixnum slot # into an offset
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2 input-operand fixnum>slot@
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! compute slot address in 2 vop-in
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2 input-operand 1 input-operand ADD
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! store new slot value
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2 input-operand 1array 0 input-operand MOV ;
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M: %fast-set-slot generate-node ( vop -- )
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drop 1 input-operand 2 input 2array 0 input-operand MOV ;
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: userenv@ ( n -- addr ) cell * "userenv" f dlsym + ;
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M: %getenv generate-node ( vop -- )
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drop
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0 output-operand 0 input userenv@ 1array MOV
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0 input 0 rel-userenv ;
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M: %setenv generate-node ( vop -- )
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drop
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1 input userenv@ 1array 0 input-operand MOV
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1 input rel-userenv ;
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