factor/basis/compiler/constants/constants.factor

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! Copyright (C) 2008, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
USING: math kernel layouts system strings words quotations byte-arrays
alien arrays literals sequences ;
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IN: compiler.constants
! These constants must match vm/memory.h
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CONSTANT: card-bits 8
CONSTANT: deck-bits 18
: card-mark ( -- n ) HEX: 40 HEX: 80 bitor ; inline
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! These constants must match vm/layouts.h
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: slot-offset ( slot tag -- n ) [ bootstrap-cells ] dip - ; inline
: float-offset ( -- n ) 8 float type-number - ; inline
: string-offset ( -- n ) 4 string type-number slot-offset ; inline
: string-aux-offset ( -- n ) 2 string type-number slot-offset ; inline
: profile-count-offset ( -- n ) 8 \ word type-number slot-offset ; inline
: byte-array-offset ( -- n ) 16 byte-array type-number - ; inline
: alien-offset ( -- n ) 4 alien type-number slot-offset ; inline
: underlying-alien-offset ( -- n ) 1 alien type-number slot-offset ; inline
: tuple-class-offset ( -- n ) 1 tuple type-number slot-offset ; inline
: word-entry-point-offset ( -- n ) 9 \ word type-number slot-offset ; inline
: quot-entry-point-offset ( -- n ) 4 quotation type-number slot-offset ; inline
: code-block-entry-point-offset ( -- n ) 4 bootstrap-cells ; inline
: array-start-offset ( -- n ) 2 array type-number slot-offset ; inline
: compiled-header-size ( -- n ) 4 bootstrap-cells ; inline
: callstack-length-offset ( -- n ) 1 \ callstack type-number slot-offset ; inline
: callstack-top-offset ( -- n ) 2 \ callstack type-number slot-offset ; inline
: vm-context-offset ( -- n ) 0 bootstrap-cells ; inline
: vm-spare-context-offset ( -- n ) 1 bootstrap-cells ; inline
: vm-signal-handler-addr-offset ( -- n ) 8 bootstrap-cells ; inline
: vm-fault-flag-offset ( -- n ) 9 bootstrap-cells ; inline
: context-callstack-top-offset ( -- n ) 0 bootstrap-cells ; inline
: context-callstack-bottom-offset ( -- n ) 1 bootstrap-cells ; inline
: context-datastack-offset ( -- n ) 2 bootstrap-cells ; inline
: context-retainstack-offset ( -- n ) 3 bootstrap-cells ; inline
: context-callstack-save-offset ( -- n ) 4 bootstrap-cells ; inline
: context-callstack-seg-offset ( -- n ) 7 bootstrap-cells ; inline
: segment-start-offset ( -- n ) 0 bootstrap-cells ; inline
: segment-size-offset ( -- n ) 1 bootstrap-cells ; inline
: segment-end-offset ( -- n ) 2 bootstrap-cells ; inline
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! Relocation classes
CONSTANT: rc-absolute-cell 0
CONSTANT: rc-absolute 1
CONSTANT: rc-relative 2
CONSTANT: rc-absolute-ppc-2/2 3
CONSTANT: rc-absolute-ppc-2 4
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CONSTANT: rc-relative-ppc-2-pc 5
CONSTANT: rc-relative-ppc-3-pc 6
CONSTANT: rc-relative-arm-3 7
CONSTANT: rc-indirect-arm 8
CONSTANT: rc-indirect-arm-pc 9
CONSTANT: rc-absolute-2 10
CONSTANT: rc-absolute-1 11
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CONSTANT: rc-absolute-ppc-2/2/2/2 12
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! Relocation types
CONSTANT: rt-dlsym 0
CONSTANT: rt-entry-point 1
CONSTANT: rt-entry-point-pic 2
CONSTANT: rt-entry-point-pic-tail 3
CONSTANT: rt-here 4
CONSTANT: rt-this 5
CONSTANT: rt-literal 6
CONSTANT: rt-untagged 7
CONSTANT: rt-megamorphic-cache-hits 8
CONSTANT: rt-vm 9
CONSTANT: rt-cards-offset 10
CONSTANT: rt-decks-offset 11
CONSTANT: rt-exception-handler 12
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CONSTANT: rt-dlsym-toc 13
CONSTANT: rt-inline-cache-miss 14
CONSTANT: rt-safepoint 15
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: rc-absolute? ( n -- ? )
${
$ rc-absolute-ppc-2/2
$ rc-absolute-cell
$ rc-absolute
$ rc-absolute-2
$ rc-absolute-1
} member? ;