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Adhemerval Zanella 7fec8a5de6 Revert __HAVE_64B_ATOMICS configure check 
The 53807741fb added a configure check
for 64-bit atomic operations that were not previously enabled on some
32-bit ABIs.

However, the NPTL semaphore code casts a sem_t to a new_sem and issues
a 64-bit atomic operation for __HAVE_64B_ATOMICS.  Since sem_t has
32-bit alignment on 32-bit architectures, this prevents the use of
64-bit atomics even if the ABI supports them.

Assume 64-bit atomic support from __WORDSIZE, which maps to how glibc
defines it before the broken change.  Also rename __HAVE_64B_ATOMICS
to USE_64B_ATOMICS to define better the flag meaning.

Checked on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: Wilco Dijkstra  <Wilco.Dijkstra@arm.com>
 		2025-11-14 14:05:20 -03:00
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alphaev5 Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
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alphaev67 Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
bits Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
fpu math: Remove ldbl-128/s_fma.c 2025-11-12 18:57:29 +00:00
nptl Update copyright dates with scripts/update-copyrights 2025-01-01 11:22:09 -08:00
Implies
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Makefile alpha: Fix missing inexact-flag raising for lround/lrint 2025-09-11 14:48:00 -03:00
Subdirs
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atomic-machine.h Revert __HAVE_64B_ATOMICS configure check 2025-11-14 14:05:20 -03:00
bsd-_setjmp.S
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bsd-setjmp.S
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configure configure: Use autoconf 2.71 2023-07-17 10:08:10 -04:00
configure.ac elf: Replace PI_STATIC_AND_HIDDEN with opposite HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 2022-04-26 09:26:22 -07:00
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dl-dtprocnum.h
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preconfigure
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tininess.h
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