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ARM semantics of carry flag is wrong for shift instructions #1033

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vbgl opened this issue Jan 31, 2025 · 0 comments
Open

ARM semantics of carry flag is wrong for shift instructions #1033

vbgl opened this issue Jan 31, 2025 · 0 comments
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arm Related to the arm port bug

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vbgl commented Jan 31, 2025

Instructions ASR, LSL, LSR, and ROR wrongly set the carry flag (C) to the most significant bit of the result.

jasmin/proofs/compiler/arm_instr_decl.v

Line 1818 in 730f19c

, Some (msb res)

@vbgl vbgl added arm Related to the arm port bug EasyCrypt extraction and model and removed EasyCrypt extraction and model labels Jan 31, 2025
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