40 lines
1.3 KiB
Factor
40 lines
1.3 KiB
Factor
! Tools to follow references in the loaded image.
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USING: accessors byte-arrays fry kernel layouts math math.bitwise
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sequences slots.syntax tools.image-analyzer.relocations ;
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IN: tools.image-analyzer.references
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QUALIFIED-WITH: tools.image-analyzer.vm vm
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! Edges in the heap
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GENERIC: pointers ( heap heap-node struct -- seq )
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M: vm:array pointers ( heap heap-node struct -- seq )
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drop nip payload>> ;
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: find-heap-node ( heap ptr -- node )
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15 unmask '[ address>> _ = ] find nip ;
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: load-relocations ( heap code-block -- seq )
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relocation>> find-heap-node payload>> >byte-array byte-array>relocations
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[ first 2 = ] filter ;
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: relocation>pointer ( heap-node relocation -- ptr )
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over payload>> swap load-relative-value swap address>> + ;
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: relocation-pointers ( heap heap-node code-block -- seq )
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swapd load-relocations [ relocation>pointer ] with map ;
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M: vm:code-block pointers ( heap heap-node struct -- seq )
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[ relocation-pointers ] [ slots{ owner parameters relocation } ] bi
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append ;
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M: vm:word pointers ( heap heap-node struct -- seq )
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2nip [
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slots{ def name props vocabulary }
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] [ entry_point>> 4 cell * - ] bi suffix ;
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M: object pointers ( heap heap-node struct -- seq )
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3drop { } ;
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: collect-pointers ( heap heap-node -- seq )
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dup object>> pointers [ 1 <= ] reject [ 15 unmask ] map ;
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