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bionic/libc/arch-arm/syscalls
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Elliott Hughes b30aff405a Revert "Revert "Lose the hand-written futex assembler."" 
The problem with the original patch was that using syscall(3) means that
errno can be set, but pthread_create(3) was abusing the TLS errno slot as
a pthread_mutex_t for the thread startup handshake.

There was also a mistake in the check for syscall failures --- it should
have checked against -1 instead of 0 (not just because that's the default
idiom, but also here because futex(2) can legitimately return values > 0).

This patch stops abusing the TLS errno slot and adds a pthread_mutex_t to
pthread_internal_t instead. (Note that for LP64 sizeof(pthread_mutex_t) >
sizeof(uintptr_t), so we could potentially clobber other TLS slots too.)

I've also rewritten the LP32 compatibility stubs to directly reuse the
code from the .h file.

This reverts commit 75c55ff84ebfa686c7ae2cc8ee431c6a33bd46b4.

Bug: 15195455
Change-Id: I6ffb13e5cf6a35d8f59f692d94192aae9ab4593d
2014-05-28 18:31:15 -07:00
..
__accept4.S
Mark sockets on creation (socket()) and accept4().
2014-05-19 15:19:16 -07:00
__brk.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__connect.S
Introduce netd_client, a dynamic library that talks to netd.
2014-05-13 11:30:03 -07:00
__epoll_pwait.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
__exit.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__fcntl64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__fstatfs64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__getcpu.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__getcwd.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__getpriority.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__ioctl.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__llseek.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
__mmap2.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
__openat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__ppoll.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
__pselect6.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
__ptrace.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__reboot.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__rt_sigaction.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__rt_sigpending.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__rt_sigprocmask.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__rt_sigsuspend.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__rt_sigtimedwait.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__sched_getaffinity.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__set_tid_address.S
Fix pthread_join.
2013-11-18 19:48:11 -08:00
__set_tls.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__sigaction.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__signalfd4.S
Hide __signalfd4, used to implement signalfd(3).
2014-05-16 15:47:29 -07:00
__socket.S
Mark sockets on creation (socket()) and accept4().
2014-05-19 15:19:16 -07:00
__statfs64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__timer_create.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__timer_delete.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__timer_getoverrun.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__timer_gettime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__timer_settime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
__waitid.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
_exit.S
Implement _Exit(3).
2014-04-08 17:16:13 -07:00
acct.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
bind.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
cacheflush.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
capget.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
capset.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
chdir.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
chroot.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
clock_getres.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
clock_gettime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
clock_nanosleep.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
clock_settime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
close.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
delete_module.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
dup3.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
dup.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
epoll_create1.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
epoll_ctl.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
eventfd.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
execve.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
faccessat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fallocate64.S
Add fallocate/fallocate64/posix_fallocate/posix_fallocate64.
2014-02-03 16:20:46 -08:00
fchdir.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fchmod.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fchmodat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fchown.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fchownat.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
fdatasync.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fgetxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
flistxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
flock.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fremovexattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
fsetxattr.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
fstat64.S
Fix build by avoiding the _C_LABEL macro.
2014-02-18 16:42:36 -08:00
fstatat64.S
Fix build by avoiding the _C_LABEL macro.
2014-02-18 16:42:36 -08:00
fsync.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
ftruncate64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
ftruncate.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getdents.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getegid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
geteuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getgroups.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getitimer.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getpeername.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getpgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getpid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getppid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getresgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getresuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getrlimit.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getrusage.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getsid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getsockname.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getsockopt.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
gettid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
gettimeofday.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
getxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
init_module.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
inotify_add_watch.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
inotify_init1.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
inotify_rm_watch.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
ioprio_get.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
ioprio_set.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
kill.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
klogctl.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
lgetxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
linkat.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
listen.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
listxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
llistxattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
lremovexattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
lseek.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
lsetxattr.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
madvise.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mincore.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mkdirat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mknodat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mlock.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mlockall.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mount.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
mprotect.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
mremap.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
msync.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
munlock.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
munlockall.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
munmap.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
nanosleep.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
personality.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
pipe2.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
prctl.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
pread64.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
prlimit64.S
Fix <sys/resource.h>.
2014-01-09 11:00:04 -08:00
pwrite64.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
read.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
readahead.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
readlinkat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
readv.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
recvfrom.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
recvmmsg.S
Add recvmmsg and sendmmsg syscalls.
2014-02-27 14:29:01 -08:00
recvmsg.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
removexattr.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
renameat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_get_priority_max.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_get_priority_min.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_getparam.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_getscheduler.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_rr_get_interval.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_setaffinity.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_setparam.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_setscheduler.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sched_yield.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sendfile64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sendfile.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sendmmsg.S
Add recvmmsg and sendmmsg syscalls.
2014-02-27 14:29:01 -08:00
sendmsg.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sendto.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
setgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setgroups.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setitimer.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setns.S
Clean up <sched.h>.
2014-01-02 12:05:50 -08:00
setpgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setpriority.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setregid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setresgid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setresuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setreuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setrlimit.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setsid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setsockopt.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
settimeofday.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setuid.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
setxattr.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
shutdown.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sigaltstack.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
socketpair.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
swapoff.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
swapon.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
symlinkat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sync.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
sysinfo.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
tgkill.S
Add cfi directives to all arm assembly.
2013-12-02 19:13:12 -08:00
timerfd_create.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
timerfd_gettime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
timerfd_settime.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
times.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
truncate64.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
truncate.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
umask.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
umount2.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
uname.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
unlinkat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
unshare.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
utimensat.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
vfork.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
wait4.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
write.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00
writev.S
Stop using the non-uapi <linux/err.h> header file.
2013-11-07 10:31:05 -08:00