[PATCH 0/1] MR10899: ntdll: Add constants/helpers, and be more explicit when parsing the ARM64 ESR.

[Brendan Shanks (＠bshanks)]

There shouldn't be any behavior changes here, my goal was to avoid ambiguity and magic numbers in the ARM64 signal handlers when parsing ESR. The EC is an enum, I think it's confusing and ambiguous to match against only certain bits of it.

I stuck with the same names for the constants that the Linux kernel uses (see [`arch/arm64/include/asm/esr.h`](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch...)), since ARM's [documentation](https://developer.arm.com/documentation/ddi0601/2026-03/AArch64-Registers/ES...) doesn't have names for them.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/10899