Paul Burton 9791554b45 MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS ... Userland code may be built using an ABI which permits linking to objects that have more restrictive floating point requirements. For example, userland code may be built to target the O32 FPXX ABI. Such code may be linked with other FPXX code, or code built for either one of the more restrictive FP32 or FP64. When linking with more restrictive code, the overall requirement of the process becomes that of the more restrictive code. The kernel has no way to know in advance which mode the process will need to be executed in, and indeed it may need to change during execution. The dynamic loader is the only code which will know the overall required mode, and so it needs to have a means to instruct the kernel to switch the FP mode of the process. This patch introduces 2 new options to the prctl syscall which provide such a capability. The FP mode of the process is represented as a simple bitmask combining a number of mode bits mirroring those present in the hardware. Userland can either retrieve the current FP mode of the process: mode = prctl(PR_GET_FP_MODE); or modify the current FP mode of the process: err = prctl(PR_SET_FP_MODE, new_mode); Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matthew Fortune <matthew.fortune@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8899/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2015-02-12 12:30:29 +01:00
..
bpf
configs
debug
events	perf: Move task_pt_regs sampling into arch code	2015-01-09 11:12:28 +01:00
gcov
irq
locking	mutex: Always clear owner field upon mutex_unlock()	2015-01-09 11:20:39 +01:00
power
printk
rcu
sched	sched/fair: Fix RCU stall upon -ENOMEM in sched_create_group()	2015-01-09 11:19:00 +01:00
time
trace	KGDB/KDB fixes and cleanups	2015-01-09 20:51:10 -08:00
.gitignore
acct.c
async.c
audit_tree.c
audit_watch.c
audit.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-12-30 10:45:47 -08:00
audit.h
auditfilter.c
auditsc.c	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2014-12-31 14:52:18 -08:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup.c
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c
cpuset.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	exit: fix race between wait_consider_task() and wait_task_zombie()	2015-01-08 15:10:51 -08:00
extable.c
fork.c
freezer.c
futex_compat.c
futex.c
groups.c
hung_task.c
irq_work.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
Makefile
module_signing.c
module-internal.h
module.c
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid_namespace.c
pid.c
profile.c
ptrace.c
range.c
reboot.c
relay.c
resource.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c	MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS	2015-02-12 12:30:29 +01:00
sysctl_binary.c
sysctl.c
system_certificates.S
system_keyring.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog.c
workqueue_internal.h
workqueue.c