glibc/sysdeps/sparc
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
..
bits
fpu math: Add fetestexcept internal alias 2025-09-11 14:46:07 -03:00
nptl
sparc32 math: Remove ldbl-128/s_fma.c 2025-11-12 18:57:29 +00:00
sparc64 math: Remove ldbl-128/s_fma.c 2025-11-12 18:57:29 +00:00
sys
Makefile
Subdirs
abort-instr.h
atomic-machine.h Revert __HAVE_64B_ATOMICS configure check 2025-11-14 14:05:20 -03:00
backtrace.c
configure
configure.ac
cpu_relax.c
crti.S
crtn.S
dl-dtprocnum.h
dl-lookupcfg.h
elf-initfini.h
gccframe.h
ldsodefs.h
machine-gmon.h
mempcpy.S
preconfigure
sparc-ifunc.h
sparc-mcount.S
stackinfo.h elf: early conversion of elf p_flags to mprotect flags 2025-08-27 10:45:45 -03:00
sysdep.h
thread_pointer.h
unwind-arch.h
utmp-size.h