sysarch's AMD64_GET_FSBASE, AMD64_GET_GSBASE and AMD64_SET_GSBASE now
follow FreeBSD 11's amd64 sysarch on Linux x86-64 through arch_prctl: the
GS base is the calling thread's, a base at or above VM_MAXUSER_ADDRESS
returns EINVAL and a null argument EFAULT. AMD64_SET_FSBASE, whose base
guest and host code share for their TLS, other operations and other hosts
still throw. Wine sets its TEB this way.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Wine port (PPSA99995) ships an ntdll module that imports sysarch
(b7uXQmnfB2s). libkernel did not export it, so loading stopped with
"undefined symbol: b7uXQmnfB2s" before the title ran.
Export sysarch as a stub that reports that it is not implemented: the
title loads and runs its launcher without calling it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
