AArch64: fix ldtrsb/ldursb sign extension #6447
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ryanmkurtz
added
Feature: Processor/AARCH64
Status: Triage
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As part of a research project testing the accuracy of the sleigh specifications compared to real hardware, we observed an unexpected behaviour in the ldtrsb and ldursb instructions for AARCH64. According to Section C6.2.193, C6.2.205 and C6.2.174, the expected behaviour is to sign extend the loaded byte to the chosen destination size. While the current behaviour instead zero extends the value.