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Suzuki K. Poulose 2d888f48e0 arm64: Emulate SETEND for AArch32 tasks 
Emulate deprecated 'setend' instruction for AArch32 bit tasks.

	setend [le/be] - Sets the endianness of EL0

On systems with CPUs which support mixed endian at EL0, the hardware
support for the instruction can be enabled by setting the SCTLR_EL1.SED
bit. Like the other emulated instructions it is controlled by an entry in
/proc/sys/abi/. For more information see :
	Documentation/arm64/legacy_instructions.txt

The instruction is emulated by setting/clearing the SPSR_EL1.E bit, which
will be reflected in the PSTATE.E in AArch32 context.

This patch also restores the native endianness for the execution of signal
handlers, since the process could have changed the endianness.

Note: All CPUs on the system must have mixed endian support at EL0. Once the
handler is registered, hotplugging a CPU which doesn't support mixed endian,
could lead to unexpected results/behavior in applications.

Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-01-23 17:11:44 +00:00
..
ABI platform-drivers-x86 for 3.19 2014-12-18 20:24:55 -08:00
accounting
acpi ACPI / GPIO: Document ACPI GPIO mappings API 2014-11-04 21:58:24 +01:00
aoe
arm Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2014-12-12 15:26:48 -08:00
arm64 arm64: Emulate SETEND for AArch32 tasks 2015-01-23 17:11:44 +00:00
auxdisplay
backlight
blackfin
block Merge branch 'for-3.19/core' of git://git.kernel.dk/linux-block 2014-12-13 14:14:23 -08:00
blockdev
bus-devices
cdrom
cgroups Merge branch 'akpm' (second patch-bomb from Andrew) 2014-12-13 13:00:36 -08:00
connector
console
cpu-freq intel_pstate: Add support for HWP 2014-11-12 00:04:38 +01:00
cpuidle
cris
crypto crypto: doc - userspace interface spec 2014-11-13 22:31:38 +08:00
development-process Documentation: remove outdated references to the linux-next wiki 2014-10-28 09:06:11 -04:00
device-mapper dm cache policy mq: simplify ability to promote sequential IO to the cache 2014-11-10 15:25:30 -05:00
devicetree Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-12-30 16:59:59 -08:00
dmaengine Documentation: dmanegine: move dmatest.txt to dmaengine folder 2014-11-06 11:17:37 +05:30
DocBook media updates for v3.19-rc1 2014-12-18 20:14:49 -08:00
driver-model
dvb
early-userspace
EDID
extcon
fault-injection
fb
filesystems These patches optionally add LZ4 compression support to Squashfs. 2014-12-14 14:42:53 -08:00
firmware_class
fmc
frv
gpio This is the bulk of GPIO changes for the v3.19 series: 2014-12-14 14:05:05 -08:00
hid
hwmon hwmon: (tmp401) Detect TMP435 on all addresses it supports 2014-12-08 06:48:37 -08:00
i2c Documentation: i2c: Use PM ops instead of legacy suspend/resume 2014-12-04 19:09:03 +01:00
i2o
ia64 kvm: Documentation: remove ia64 2014-11-20 11:08:55 +01:00
ide
infiniband
input Docs changes for the 3.19 merge window 2014-12-12 14:42:48 -08:00
ioctl
isdn
ja_JP
kbuild
kdump kernel: add panic_on_warn 2014-12-10 17:41:10 -08:00
ko_KR
laptops
leds
locking Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-09 19:59:22 -08:00
m68k
memory-devices
metag
mic Documentation: Build mic/mpssd only for x86_64 2014-12-05 11:18:36 -05:00
mips
misc-devices
mmc
mn10300
mtd
namespaces
netlabel
networking fib_trie.txt: fix typo 2014-12-15 11:45:15 -05:00
nfc
nios2 Documentation: Add documentation for Nios2 architecture 2014-12-08 12:56:06 +08:00
parisc
PCI
pcmcia
phy
platform
power Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2014-12-12 15:26:48 -08:00
powerpc
pps
prctl Documentation: Restrict TSC test code to x86 2014-10-28 08:46:27 -04:00
pti
ptp ptp: restore the makefile for building the test program. 2014-10-24 16:07:10 -04:00
rapidio
RCU Merge branches 'torture.2014.11.03a', 'cpu.2014.11.03a', 'doc.2014.11.13a', 'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD 2014-11-13 10:39:04 -08:00
s390 s390/docs: Remove sections that are not related to s390 2014-11-18 18:22:59 +01:00
scheduler
scsi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-12-12 10:08:06 -08:00
security Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity into next 2014-11-19 21:36:07 +11:00
serial serial: Fix locking for uart driver set_termios() method 2014-11-05 18:53:54 -08:00
sh
sound ALSA: hda - Add "eapd" model string for AD1986A codec 2014-12-10 14:00:13 +01:00
spi
sysctl ipc/msg: increase MSGMNI, remove scaling 2014-12-13 12:42:52 -08:00
target
thermal
timers
tpm
trace Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
usb USB patches for 3.19-rc1 2014-12-14 14:57:16 -08:00
vDSO vdso: don't require 64-bit math in standalone test 2014-10-25 10:53:44 -04:00
video4linux [media] vivid.txt: document new controls 2014-12-16 23:21:37 -02:00
virtual Second round of changes for KVM for arm/arm64 for v3.19; fixes reboot 2014-12-15 13:06:40 +01:00
vm Merge branch 'akpm' (second patch-bomb from Andrew) 2014-12-13 13:00:36 -08:00
w1
watchdog
wimax
x86 Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-19 13:22:42 -08:00
xtensa
zh_CN
00-INDEX
applying-patches.txt
assoc_array.txt
atomic_ops.txt documentation: Add atomic_long_t to atomic_ops.txt 2014-11-13 10:34:54 -08:00
bad_memory.txt
basic_profiling.txt
bcache.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes Update old iproute2 and Xen Remus links 2014-12-09 13:38:13 -05:00
circular-buffers.txt
clk.txt clk: Change clk_ops->determine_rate to return a clk_hw as the best parent 2014-12-03 16:21:37 -08:00
coccinelle.txt
CodingStyle CodingStyle: add some more error handling guidelines 2014-12-02 08:55:32 -05:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt
dma-buf-sharing.txt
DMA-ISA-LPC.txt
dontdiff
dynamic-debug-howto.txt
edac.txt
efi-stub.txt
eisa.txt
email-clients.txt Documentation/email-clients.txt: add info about Claws Mail 2014-12-02 11:55:29 -05:00
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
highuid.txt
HOWTO Documentation: remove outdated references to the linux-next wiki 2014-10-28 09:06:11 -04:00
hsi.txt
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt ipmi: Add SMBus interface driver (SSIF) 2014-12-11 15:04:11 -06:00
IRQ-affinity.txt
IRQ-domain.txt irqdomain: Introduce new interfaces to support hierarchy irqdomains 2014-11-23 13:01:45 +01:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt More ACPI and power management updates for 3.19-rc1 2014-12-18 20:28:33 -08:00
kernel-per-CPU-kthreads.txt
kmemcheck.txt
kmemleak.txt Documentation: Add CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF case 2014-10-24 13:59:03 -04:00
kobject.txt kobject: grammar fix 2014-12-08 09:07:11 -05:00
kprobes.txt
kref.txt
kselftest.txt kselftest: Move the docs to the Documentation dir 2014-11-24 10:49:54 -07:00
ldm.txt
local_ops.txt percpu: update local_ops.txt to reflect this_cpu operations 2014-12-13 12:42:53 -08:00
lockup-watchdogs.txt
logo.gif
logo.txt
lzo.txt
magic-number.txt
mailbox.txt Documentation: Fix a typo in mailbox.txt 2014-11-03 11:54:50 -05:00
Makefile
ManagementStyle
md.txt
media-framework.txt
memory-barriers.txt arch: Add lightweight memory barriers dma_rmb() and dma_wmb() 2014-12-11 21:15:06 -05:00
memory-hotplug.txt
module-signing.txt
mono.txt
nommu-mmap.txt
numastat.txt Doc: Update numastat.txt 2012-02-28 16:05:06 +01:00
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt phy: improved lookup method 2014-11-21 19:48:50 +05:30
pi-futex.txt
pinctrl.txt
pnp.txt
preempt-locking.txt
printk-formats.txt
pwm.txt
ramoops.txt pstore-ram: Allow optional mapping with pgprot_noncached 2014-12-11 13:38:31 -08:00
rbtree.txt
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
SM501.txt
smsc_ece1099.txt
sparse.txt
stable_api_nonsense.txt
stable_kernel_rules.txt
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches Documentation/SubmittingPatches: Reported-by tags and permission 2014-10-29 08:56:46 -04:00
svga.txt
sysfs-rules.txt
sysrq.txt
this_cpu_ops.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
xillybus.txt
xz.txt
zorro.txt