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Although defined in initial TLS/NPTL ABI for m68k and ColdFire [1], kernel
support was never pushed upstream. This patch removes the unused m68k
vDSO support.
Checked with a build against m68k and m68k-coldfire and some basic
tests on ARAnyM.
* sysdeps/unix/sysv/linux/m68k/Makefile (sysdep_routines,
sysdep-rtld-routines): Remove rules.
* sysdeps/unix/sysv/linux/m68k/Versions (libc) [GLIBC_PRIVATE]:
Remove __vdso_atomic_cmpxchg_32 and __vdso_atomic_barrier.
(ld) [GLIBC_PRIVATE]: __rtld___vdso_read_tp,
__rtld___vdso_atomic_cmpxchg_32, and __rtld___vdso_atomic_barrier.
* sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h
(atomic_compare_and_exchange_val_acq, atomic_full_barrier): Remove
vDSO path for SHARED.
* sysdeps/unix/sysv/linux/m68k/init-first.c: Remove file.
* sysdeps/unix/sysv/linux/m68k/libc-m68k-vdso.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/m68k-helpers.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/m68k-vdso.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/m68k-vdso.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/m68k-helpers.c: New file.
[1] https://lists.debian.org/debian-68k/2007/11/msg00071.html
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