55 lines
1.5 KiB
Factor
55 lines
1.5 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: math math.order namespaces accessors kernel layouts combinators
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combinators.smart assocs sequences cpu.architecture ;
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IN: compiler.cfg.stack-frame
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TUPLE: stack-frame
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{ params integer }
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{ return integer }
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{ total-size integer }
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{ gc-root-size integer }
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spill-counts ;
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! Stack frame utilities
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: param-base ( -- n )
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stack-frame get [ params>> ] [ return>> ] bi + ;
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: spill-float-offset ( n -- offset )
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double-float-regs reg-size * ;
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: spill-integer-base ( -- n )
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stack-frame get spill-counts>> double-float-regs [ swap at ] keep reg-size *
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param-base + ;
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: spill-integer-offset ( n -- offset )
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cells spill-integer-base + ;
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: spill-area-size ( stack-frame -- n )
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spill-counts>> [ swap reg-size * ] { } assoc>map sum ;
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: gc-root-base ( -- n )
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stack-frame get spill-area-size
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param-base + ;
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: gc-root-offset ( n -- n' ) gc-root-base + ;
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: gc-roots-size ( live-registers live-spill-slots -- n )
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[ keys [ reg-class>> reg-size ] sigma ] bi@ + ;
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: (stack-frame-size) ( stack-frame -- n )
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[
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{
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[ spill-area-size ]
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[ gc-root-size>> ]
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[ params>> ]
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[ return>> ]
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} cleave
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] sum-outputs ;
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: max-stack-frame ( frame1 frame2 -- frame3 )
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[ stack-frame new ] 2dip
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[ [ params>> ] bi@ max >>params ]
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[ [ return>> ] bi@ max >>return ]
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[ [ gc-root-size>> ] bi@ max >>gc-root-size ]
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2tri ; |