Add stack manipulation subroutines
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@ -78,6 +78,26 @@ stEmit:
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store ffff, r1
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ret
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; ------------------------------------------------------------------
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; Stack manipulation
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; ------------------------------------------------------------------
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; a - a a
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stDup:
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cleq r0, r0, peekWord
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breq r0, r0, pushWord
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; a b -- a b a
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stOver:
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cleq r0, r0, popWord
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cleq r0, r0, tmpStoreWord01
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cleq r0, r0, peekWord
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cleq r0, r0, tmp2StoreWord01
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cleq r0, r0, tmpLoadWord01
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cleq r0, r0, pushWord
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cleq r0, r0, tmp2LoadWord01
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breq r0, r0, pushWord
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; ==================================================================
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; Low-level functions
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; ==================================================================
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