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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 13:38:45 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 13:38:45 -0700
commit38cb162b7585d837083b8365da1eb32687c5164c (patch)
treee4ae15715b23b320b1a92699fac767bc766c8f0b /arch/ia64/ia32
parentba7cc09c9c9e29a57045dc5bbf843ac1cfad3283 (diff)
parente180583b85f4a48bd55924712c88e5d8eb182e08 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] wire up pselect, ppoll [IA64] Add TIF_RESTORE_SIGMASK [IA64] unwind did not work for processes born with CLONE_STOPPED [IA64] Optional method to purge the TLB on SN systems [IA64] SPIN_LOCK_UNLOCKED macro cleanup in arch/ia64 [IA64-SN2][KJ] mmtimer.c-kzalloc [IA64] fix stack alignment for ia32 signal handlers [IA64] - Altix: hotplug after intr redirect can crash system [IA64] save and restore cpus_allowed in cpu_idle_wait [IA64] Removal of percpu TR cleanup in kexec code [IA64] Fix some section mismatch errors
Diffstat (limited to 'arch/ia64/ia32')
-rw-r--r--arch/ia64/ia32/ia32_entry.S39
-rw-r--r--arch/ia64/ia32/ia32_signal.c65
2 files changed, 16 insertions, 88 deletions
diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S
index 687e5fdc9683..99b665e2b1d5 100644
--- a/arch/ia64/ia32/ia32_entry.S
+++ b/arch/ia64/ia32/ia32_entry.S
@@ -52,43 +52,6 @@ ENTRY(ia32_clone)
br.ret.sptk.many rp
END(ia32_clone)
-ENTRY(sys32_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
- mov loc0=rp
- mov out0=in0 // mask
- mov out1=in1 // sigsetsize
- mov out2=sp // out2 = &sigscratch
- .fframe 16
- adds sp=-16,sp // allocate dummy "sigscratch"
- ;;
- .body
- br.call.sptk.many rp=ia32_rt_sigsuspend
-1: .restore sp
- adds sp=16,sp
- mov rp=loc0
- mov ar.pfs=loc1
- br.ret.sptk.many rp
-END(sys32_rt_sigsuspend)
-
-ENTRY(sys32_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
- mov loc0=rp
- mov out0=in2 // mask (first two args are ignored)
- ;;
- mov out1=sp // out1 = &sigscratch
- .fframe 16
- adds sp=-16,sp // allocate dummy "sigscratch"
- .body
- br.call.sptk.many rp=ia32_sigsuspend
-1: .restore sp
- adds sp=16,sp
- mov rp=loc0
- mov ar.pfs=loc1
- br.ret.sptk.many rp
-END(sys32_sigsuspend)
-
GLOBAL_ENTRY(ia32_ret_from_clone)
PT_REGS_UNWIND_INFO(0)
{ /*
@@ -389,7 +352,7 @@ ia32_syscall_table:
data8 sys_rt_sigpending
data8 compat_sys_rt_sigtimedwait
data8 sys32_rt_sigqueueinfo
- data8 sys32_rt_sigsuspend
+ data8 compat_sys_rt_sigsuspend
data8 sys32_pread /* 180 */
data8 sys32_pwrite
data8 sys_chown /* 16-bit version */
diff --git a/arch/ia64/ia32/ia32_signal.c b/arch/ia64/ia32/ia32_signal.c
index 10510e585204..85e82f32e480 100644
--- a/arch/ia64/ia32/ia32_signal.c
+++ b/arch/ia64/ia32/ia32_signal.c
@@ -451,59 +451,20 @@ sigact_set_handler (struct k_sigaction *sa, unsigned int handler, unsigned int r
sa->sa.sa_handler = (__sighandler_t) (((unsigned long) restorer << 32) | handler);
}
-long
-__ia32_rt_sigsuspend (compat_sigset_t *sset, unsigned int sigsetsize, struct sigscratch *scr)
+asmlinkage long
+sys32_sigsuspend (int history0, int history1, old_sigset_t mask)
{
- extern long ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall);
- sigset_t oldset, set;
-
- scr->scratch_unat = 0; /* avoid leaking kernel bits to user level */
- memset(&set, 0, sizeof(set));
-
- memcpy(&set.sig, &sset->sig, sigsetsize);
-
- sigdelsetmask(&set, ~_BLOCKABLE);
-
+ mask &= _BLOCKABLE;
spin_lock_irq(&current->sighand->siglock);
- {
- oldset = current->blocked;
- current->blocked = set;
- recalc_sigpending();
- }
+ current->saved_sigmask = current->blocked;
+ siginitset(&current->blocked, mask);
+ recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
- /*
- * The return below usually returns to the signal handler. We need to pre-set the
- * correct error code here to ensure that the right values get saved in sigcontext
- * by ia64_do_signal.
- */
- scr->pt.r8 = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (ia64_do_signal(&oldset, scr, 1))
- return -EINTR;
- }
-}
-
-asmlinkage long
-ia32_rt_sigsuspend (compat_sigset_t __user *uset, unsigned int sigsetsize, struct sigscratch *scr)
-{
- compat_sigset_t set;
-
- if (sigsetsize > sizeof(compat_sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&set.sig, &uset->sig, sigsetsize))
- return -EFAULT;
-
- return __ia32_rt_sigsuspend(&set, sigsetsize, scr);
-}
-
-asmlinkage long
-ia32_sigsuspend (unsigned int mask, struct sigscratch *scr)
-{
- return __ia32_rt_sigsuspend((compat_sigset_t *) &mask, sizeof(mask), scr);
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ set_thread_flag(TIF_RESTORE_SIGMASK);
+ return -ERESTARTNOHAND;
}
asmlinkage long
@@ -810,7 +771,11 @@ get_sigframe (struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
}
/* Legacy stack switching not supported */
- return (void __user *)((esp - frame_size) & -8ul);
+ esp -= frame_size;
+ /* Align the stack pointer according to the i386 ABI,
+ * i.e. so that on function entry ((sp + 4) & 15) == 0. */
+ esp = ((esp + 4) & -16ul) - 4;
+ return (void __user *) esp;
}
static int