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								! Copyright (C) 2008 Slava Pestov.
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								! See http://factorcode.org/license.txt for BSD license.
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								USING: math kernel layouts system strings ;
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								IN: compiler.constants
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								! These constants must match vm/memory.h
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								: card-bits 8 ; inline
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								: deck-bits 18 ; inline
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								: card-mark ( -- n ) HEX: 40 HEX: 80 bitor ; inline
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								! These constants must match vm/layouts.h
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								: header-offset ( -- n ) object tag-number neg ; inline
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								: float-offset ( -- n ) 8 float tag-number - ; inline
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								: string-offset ( -- n ) 4 bootstrap-cells object tag-number - ; inline
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								: string-aux-offset ( -- n ) 2 bootstrap-cells string tag-number - ; inline
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								: profile-count-offset ( -- n ) 7 bootstrap-cells object tag-number - ; inline
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								: byte-array-offset ( -- n ) 2 bootstrap-cells object tag-number - ; inline
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								: alien-offset ( -- n ) 3 bootstrap-cells object tag-number - ; inline
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								: underlying-alien-offset ( -- n ) bootstrap-cell object tag-number - ; inline
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								: tuple-class-offset ( -- n ) bootstrap-cell tuple tag-number - ; inline
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								: class-hash-offset ( -- n ) bootstrap-cell object tag-number - ; inline
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								: word-xt-offset ( -- n ) 9 bootstrap-cells object tag-number - ; inline
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								: quot-xt-offset ( -- n ) 3 bootstrap-cells object tag-number - ; inline
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								: word-code-offset ( -- n ) 10 bootstrap-cells object tag-number - ; inline
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								: array-start-offset ( -- n ) 2 bootstrap-cells object tag-number - ; inline
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								: compiled-header-size ( -- n ) 4 bootstrap-cells ; inline
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								! Relocation classes
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								: rc-absolute-cell    0 ; inline
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								: rc-absolute         1 ; inline
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								: rc-relative         2 ; inline
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								: rc-absolute-ppc-2/2 3 ; inline
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								: rc-relative-ppc-2   4 ; inline
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								: rc-relative-ppc-3   5 ; inline
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								: rc-relative-arm-3   6 ; inline
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								: rc-indirect-arm     7 ; inline
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								: rc-indirect-arm-pc  8 ; inline
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								! Relocation types
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								: rt-primitive   0 ; inline
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								: rt-dlsym       1 ; inline
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								: rt-dispatch    2 ; inline
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								: rt-xt          3 ; inline
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								: rt-here        4 ; inline
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								: rt-label       5 ; inline
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								: rt-immediate   6 ; inline
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								: rt-stack-chain 7 ; inline
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								: rc-absolute? ( n -- ? )
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								    [ rc-absolute-ppc-2/2 = ]
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								    [ rc-absolute-cell = ]
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								    [ rc-absolute = ]
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								    tri or or ;
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