7a41c5c6f9
I decided to keep SKIP, .. TO, (renamed from AT,) around and limit IF, .. THEN, to the simple BRNE case.
16 lines
507 B
Plaintext
16 lines
507 B
Plaintext
( L1 LBL! .. L1 ' RJMP LBL, )
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: LBL! ( l -- ) PC SWAP ! ;
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: LBL, ( l op -- ) SWAP @ 1- SWAP EXECUTE A,, ;
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: SKIP, PC 0 A,, ;
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: TO, ( opw pc )
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( warning: pc is a PC offset, not a mem addr! )
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2 * ORG @ + PC 1- H@ ( opw addr tgt hbkp )
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ROT HERE ! ( opw tgt hbkp ) SWAP ROT EXECUTE H@ ! ( hbkp )
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HERE ! ;
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( L1 FLBL, .. L1 ' RJMP FLBL! )
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: FLBL, ( l -- ) LBL! 0 A,, ;
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: FLBL! ( l opw -- ) SWAP @ TO, ;
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: BEGIN, PC ;
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: AGAIN, ( op ) SWAP 1- SWAP EXECUTE A,, ;
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: IF, ['] BREQ SKIP, ; : THEN, TO, ;
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