[RFC PATCH 1/4] ntdll: Consolidate 2 STRs into 1 STRD in ARM syscall dispatcher.
Jin-oh Kang
jinoh.kang.kr at gmail.com
Tue Feb 8 12:39:26 CST 2022
On Wed, Feb 9, 2022, 3:29 AM Zebediah Figura <zfigura at codeweavers.com>
wrote:
> We had to avoid strd previously due to some processors not supporting it
> [1]. Is this instruction portable enough?
>
> [1] https://bugs.winehq.org/show_bug.cgi?id=44365
LDRD and STRD are ARMv7 instructions. There is at least one instance of
LDRD in dlls/ntdll/signal_arm.c, in call_consolidate_callback. If we're
aiming for pre-ARMv7 CPUs, we might as well have to remove it.
Otherwise I'd just blame the assembler. Maybe use .inst instead?
--
Sincerely,
Jinoh Kang
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