50 lines
1.4 KiB
Factor
50 lines
1.4 KiB
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: assembler
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USING: alien math memory kernel hashtables namespaces ;
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SYMBOL: interned-literals
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: cell 4 ; inline
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: compiled-header HEX: 01c3babe ; inline
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: compiled-byte ( a -- n )
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<alien> 0 alien-signed-1 ; inline
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: set-compiled-byte ( n a -- )
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<alien> 0 set-alien-signed-1 ; inline
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: compiled-cell ( a -- n )
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<alien> 0 alien-signed-cell ; inline
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: set-compiled-cell ( n a -- )
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<alien> 0 set-alien-signed-cell ; inline
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: compile-aligned ( n -- )
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compiled-offset cell 2 * align set-compiled-offset ; inline
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: intern-literal ( obj -- lit# )
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dup interned-literals get hash [ ] [
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[
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address
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literal-top set-compiled-cell
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literal-top dup cell + set-literal-top
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dup
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] keep interned-literals get set-hash
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] ?ifte ;
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: compile-byte ( n -- )
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compiled-offset set-compiled-byte
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compiled-offset 1 + set-compiled-offset ; inline
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: compile-cell ( n -- )
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compiled-offset set-compiled-cell
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compiled-offset cell + set-compiled-offset ; inline
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: begin-assembly ( -- code-len-fixup reloc-len-fixup )
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compiled-header compile-cell
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compiled-offset 0 compile-cell
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compiled-offset 0 compile-cell ;
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: init-assembler ( -- )
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global [ <namespace> interned-literals set ] bind ;
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: w>h/h dup -16 shift HEX: ffff bitand >r HEX: ffff bitand r> ;
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