I chanced on that TLS registers are numerous in 64 bit Home windows (GS) and Haiku (FS).

NtCurrentTeb()
mov %gs:0x30, %r13

static inline voidget_tls()
{
	voidtls;
	__asm__ __volatile__ ("movq	%%fs:0, %0" : "=r" (tls));
	return tls;
}

So I attempted to implement surroundings GS spoiled in kernel and obtained some success.

Cmd is already working. No GUI but.

Microsoft Home windows 6.1.7601

Z:Haikurecordsprogramswine-6.23>
Z:Haikurecordsprogramswine-6.23>
Z:Haikurecordsprogramswine-6.23>
Z:Haikurecordsprogramswine-6.23>dir
00c4:fixme:file:get_default_drive_device auto detection of DOS devices now no longer supported on this platform
Volume in power Z has no impress.
Volume Serial Number is 5a00-0000

Checklist of Z:Haikurecordsprogramswine-6.23

12/31/2021   6: 47 AM           .
12/30/2021  11: 27 PM           ..
 12/4/2021   6: 17 AM        16,635  aclocal.m4
 12/4/2021   6: 17 AM        33,128  ANNOUNCE
 12/4/2021   6: 17 AM        26,847  AUTHORS
12/30/2021  11: 32 PM       908,816  config.log
12/30/2021  11: 31 PM        71,114  config.place of abode
 12/4/2021   6: 17 AM       770,828  configure
 12/4/2021   6: 17 AM       161,964  configure.ac
 12/4/2021   6: 17 AM        26,434  COPYING.LIB
 12/4/2021   6: 17 AM           dlls
 12/4/2021   6: 17 AM           documentation
12/30/2021  11: 52 PM           fonts
12/30/2021  11: 52 PM           consist of
12/31/2021   6: 29 AM           set up
 12/4/2021   6: 17 AM           libs
 12/4/2021   6: 17 AM           824  LICENSE
 12/4/2021   6: 17 AM         1,324  LICENSE.OLD
12/30/2021  11: 51 PM           loader
 12/4/2021   6: 17 AM         8,766  MAINTAINERS
12/31/2021  12: 16 AM    16,079,205  Makefile
12/30/2021  11: 32 PM           nls
12/30/2021  11: 32 PM           po
 12/4/2021   6: 17 AM           applications
 12/4/2021   6: 17 AM         5,586  README
12/31/2021  12: 16 AM           server
12/30/2021  11: 42 PM           tools
 12/4/2021   6: 17 AM            18  VERSION
 12/4/2021   6: 17 AM         2,629  wine
 12/4/2021   6: 17 AM         2,629  wine64
      16 files               18,116,747 bytes
      14 directories                  0 bytes free


Z:Haikurecordsprogramswine-6.23>