glibc/sysdeps/tile
Chris Metcalf a329844ff8 Make sure tilepro uses kernel atomics fo atomic_store
It's not legal for raw stores to be mixed with atomic operations
on tilepro, since the atomics are managed by kernel fast syscalls.
It's possible for a hardware store and a kernel fast atomic to race
with each other in such a way that the hardware store is lost.

Suppose you have an initial zero value, and you race with a store
of 2 and a kernel cmpxchg from 0 to 1.  The legal output is only 2:
either the store hit first and the cmpxchg failed, or the cmpxchg
hit first and succeeded, then was overwritten by the 2.  But if
the kernel cmpxchg starts first and loads the zero, then the store
hits and sets the value to 2, the cmpxchg will still decide it was
successful and write the 1, leaving the value illegally set to 1.

Using atomic_exchange variants to implement atomic_store fixes this
problem for tilepro.
2016-11-10 20:08:24 -05:00
..
bits Add femode_t functions. 2016-09-07 16:40:09 +00:00
nptl nptl: Document the reason why __kind in pthread_mutex_t is part of the ABI 2016-11-07 20:24:32 +01:00
tilegx Define wordsize.h macros everywhere 2016-11-04 09:37:44 -07:00
tilepro Make sure tilepro uses kernel atomics fo atomic_store 2016-11-10 20:08:24 -05:00
__longjmp.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
__tls_get_addr.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
_mcount.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
abort-instr.h Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
atomic-machine.h Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
backtrace.c Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
bsd-_setjmp.S Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
bsd-setjmp.S Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
bzero.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
configure tile: Enable PI_STATIC_AND_HIDDEN 2015-04-16 09:40:21 -04:00
configure.ac tile: Enable PI_STATIC_AND_HIDDEN 2015-04-16 09:40:21 -04:00
crti.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-lookupcfg.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-machine.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-runtime.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-start.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-tls.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-tls.h elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ffs.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ffsll.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Implies Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
libm-test-ulps tile: regenerate libm-test-ulps 2015-10-22 12:00:31 -04:00
libm-test-ulps-name Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Makefile Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
math_private.h Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
memcmp.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
memcopy.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
preconfigure Handle tilegx* machine names. 2016-11-04 13:32:06 +00:00
s_fma.c Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
s_fmaf.c Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
setjmp.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sfp-machine.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stackguard-macros.h Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
start.S Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tls-macros.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-audit.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Versions Move tilegx, tilepro, and linux-generic from ports to libc. 2014-02-10 11:04:39 -05:00
wordcopy.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00