git: libnvmm(3): Fix sign-extension on RCX and RDI/RSI

[Aaron LI]

commit d605e8301cded6bc09e3127af6489f83046a4e86
Author: Aaron LI <aly at aaronly.me>
Date:   Mon Aug 31 21:46:40 2026 +0800

    libnvmm(3): Fix sign-extension on RCX and RDI/RSI
    
    * Fix sign-extension on RCX when using the REP prefix.
    * Fix sign-extension on RDI/RSI when emulating MOVS.
    
    Obtained-from: NVMM Reference Implementation

Summary of changes:
 lib/libnvmm/libnvmm_x86.c                 | 56 ++++++++++++++++++++++++-------
 test/testcases/libnvmm/h_mem_assist.c     |  4 +++
 test/testcases/libnvmm/h_mem_assist_asm.S | 42 +++++++++++++++++++++++
 3 files changed, 89 insertions(+), 13 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/d605e8301cded6bc09e3127af6489f83046a4e86


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