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[IA64] Add TIF_RESTORE_SIGMASK

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Preparation for pselect and ppoll.
ia32 compat code not tested. :-(

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Alexey Dobriyan
2007-01-23 19:03:17 +03:00
committed by Tony Luck
parent 690def2141
commit 4a177cbf84
8 changed files with 43 additions and 166 deletions
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26
arch/ia64/kernel/entry.S
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@ -1199,32 +1199,6 @@ ENTRY(notify_resume_user)
br.ret.sptk.many rp
END(notify_resume_user)
GLOBAL_ENTRY(sys_rt_sigsuspend)
.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs in case of syscall restart!
mov r9=ar.unat
mov loc0=rp // save return address
mov out0=in0 // mask
mov out1=in1 // sigsetsize
adds out2=8,sp // out2=&sigscratch->ar_pfs
;;
.fframe 16
.spillsp ar.unat, 16
st8 [sp]=r9,-16 // allocate space for ar.unat and save it
st8 [out2]=loc1,-8 // save ar.pfs, out2=&sigscratch
.body
br.call.sptk.many rp=ia64_rt_sigsuspend
.ret17: .restore sp
adds sp=16,sp // pop scratch stack space
;;
ld8 r9=[sp] // load new unat from sw->caller_unat
mov rp=loc0
;;
mov ar.unat=r9
mov ar.pfs=loc1
br.ret.sptk.many rp
END(sys_rt_sigsuspend)
ENTRY(sys_rt_sigreturn)
PT_REGS_UNWIND_INFO(0)
/*