[IA64] Remove COMPAT_IA32 support

This has been broken since May 2008 when Al Viro killed altroot support.
Since nobody has complained, it would appear that there are no users of
this code (A plausible theory since the main OSVs that support ia64 prefer
to use the IA32-EL software emulation).

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 0 insertions, 1010 deletions

diff --git a/arch/ia64/ia32/ia32_signal.c b/arch/ia64/ia32/ia32_signal.c
deleted file mode 100644
index b763ca19ef1..00000000000
--- a/arch/ia64/ia32/ia32_signal.c
+++ /dev/null
@@ -1,1010 +0,0 @@
-/*
- * IA32 Architecture-specific signal handling support.
- *
- * Copyright (C) 1999, 2001-2002, 2005 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
- * Copyright (C) 2000 VA Linux Co
- * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
- *
- * Derived from i386 and Alpha versions.
- */
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/personality.h>
-#include <linux/ptrace.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/smp.h>
-#include <linux/stddef.h>
-#include <linux/syscalls.h>
-#include <linux/unistd.h>
-#include <linux/wait.h>
-#include <linux/compat.h>
-
-#include <asm/intrinsics.h>
-#include <asm/uaccess.h>
-#include <asm/rse.h>
-#include <asm/sigcontext.h>
-
-#include "ia32priv.h"
-
-#include "../kernel/sigframe.h"
-
-#define A(__x)		((unsigned long)(__x))
-
-#define DEBUG_SIG	0
-#define _BLOCKABLE	(~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-
-#define __IA32_NR_sigreturn            119
-#define __IA32_NR_rt_sigreturn         173
-
-struct sigframe_ia32
-{
-       int pretcode;
-       int sig;
-       struct sigcontext_ia32 sc;
-       struct _fpstate_ia32 fpstate;
-       unsigned int extramask[_COMPAT_NSIG_WORDS-1];
-       char retcode[8];
-};
-
-struct rt_sigframe_ia32
-{
-       int pretcode;
-       int sig;
-       int pinfo;
-       int puc;
-       compat_siginfo_t info;
-       struct ucontext_ia32 uc;
-       struct _fpstate_ia32 fpstate;
-       char retcode[8];
-};
-
-int
-copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
-{
-	unsigned long tmp;
-	int err;
-
-	if (!access_ok(VERIFY_READ, from, sizeof(compat_siginfo_t)))
-		return -EFAULT;
-
-	err = __get_user(to->si_signo, &from->si_signo);
-	err |= __get_user(to->si_errno, &from->si_errno);
-	err |= __get_user(to->si_code, &from->si_code);
-
-	if (to->si_code < 0)
-		err |= __copy_from_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
-	else {
-		switch (to->si_code >> 16) {
-		      case __SI_CHLD >> 16:
-			err |= __get_user(to->si_utime, &from->si_utime);
-			err |= __get_user(to->si_stime, &from->si_stime);
-			err |= __get_user(to->si_status, &from->si_status);
-		      default:
-			err |= __get_user(to->si_pid, &from->si_pid);
-			err |= __get_user(to->si_uid, &from->si_uid);
-			break;
-		      case __SI_FAULT >> 16:
-			err |= __get_user(tmp, &from->si_addr);
-			to->si_addr = (void __user *) tmp;
-			break;
-		      case __SI_POLL >> 16:
-			err |= __get_user(to->si_band, &from->si_band);
-			err |= __get_user(to->si_fd, &from->si_fd);
-			break;
-		      case __SI_RT >> 16: /* This is not generated by the kernel as of now.  */
-		      case __SI_MESGQ >> 16:
-			err |= __get_user(to->si_pid, &from->si_pid);
-			err |= __get_user(to->si_uid, &from->si_uid);
-			err |= __get_user(to->si_int, &from->si_int);
-			break;
-		}
-	}
-	return err;
-}
-
-int
-copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
-{
-	unsigned int addr;
-	int err;
-
-	if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
-		return -EFAULT;
-
-	/* If you change siginfo_t structure, please be sure
-	   this code is fixed accordingly.
-	   It should never copy any pad contained in the structure
-	   to avoid security leaks, but must copy the generic
-	   3 ints plus the relevant union member.
-	   This routine must convert siginfo from 64bit to 32bit as well
-	   at the same time.  */
-	err = __put_user(from->si_signo, &to->si_signo);
-	err |= __put_user(from->si_errno, &to->si_errno);
-	err |= __put_user((short)from->si_code, &to->si_code);
-	if (from->si_code < 0)
-		err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
-	else {
-		switch (from->si_code >> 16) {
-		case __SI_CHLD >> 16:
-			err |= __put_user(from->si_utime, &to->si_utime);
-			err |= __put_user(from->si_stime, &to->si_stime);
-			err |= __put_user(from->si_status, &to->si_status);
-		default:
-			err |= __put_user(from->si_pid, &to->si_pid);
-			err |= __put_user(from->si_uid, &to->si_uid);
-			break;
-		case __SI_FAULT >> 16:
-			/* avoid type-checking warnings by copying _pad[0] in lieu of si_addr... */
-			err |= __put_user(from->_sifields._pad[0], &to->si_addr);
-			break;
-		case __SI_POLL >> 16:
-			err |= __put_user(from->si_band, &to->si_band);
-			err |= __put_user(from->si_fd, &to->si_fd);
-			break;
-		case __SI_TIMER >> 16:
-			err |= __put_user(from->si_tid, &to->si_tid);
-			err |= __put_user(from->si_overrun, &to->si_overrun);
-			addr = (unsigned long) from->si_ptr;
-			err |= __put_user(addr, &to->si_ptr);
-			break;
-		case __SI_RT >> 16:	/* Not generated by the kernel as of now.  */
-		case __SI_MESGQ >> 16:
-			err |= __put_user(from->si_uid, &to->si_uid);
-			err |= __put_user(from->si_pid, &to->si_pid);
-			addr = (unsigned long) from->si_ptr;
-			err |= __put_user(addr, &to->si_ptr);
-			break;
-		}
-	}
-	return err;
-}
-
-
-/*
- *  SAVE and RESTORE of ia32 fpstate info, from ia64 current state
- *  Used in exception handler to pass the fpstate to the user, and restore
- *  the fpstate while returning from the exception handler.
- *
- *    fpstate info and their mapping to IA64 regs:
- *    fpstate    REG(BITS)      Attribute    Comments
- *    cw         ar.fcr(0:12)                with bits 7 and 6 not used
- *    sw         ar.fsr(0:15)
- *    tag        ar.fsr(16:31)               with odd numbered bits not used
- *                                           (read returns 0, writes ignored)
- *    ipoff      ar.fir(0:31)
- *    cssel      ar.fir(32:47)
- *    dataoff    ar.fdr(0:31)
- *    datasel    ar.fdr(32:47)
- *
- *    _st[(0+TOS)%8]   f8
- *    _st[(1+TOS)%8]   f9
- *    _st[(2+TOS)%8]   f10
- *    _st[(3+TOS)%8]   f11                   (f8..f11 from ptregs)
- *      : :            :                     (f12..f15 from live reg)
- *      : :            :
- *    _st[(7+TOS)%8]   f15                   TOS=sw.top(bits11:13)
- *
- *    status     Same as sw     RO
- *    magic      0                           as X86_FXSR_MAGIC in ia32
- *    mxcsr      Bits(7:15)=ar.fcr(39:47)
- *               Bits(0:5) =ar.fsr(32:37)    with bit 6 reserved
- *    _xmm[0..7] f16..f31                    (live registers)
- *                                           with _xmm[0]
- *                                             Bit(64:127)=f17(0:63)
- *                                             Bit(0:63)=f16(0:63)
- *    All other fields unused...
- */
-
-static int
-save_ia32_fpstate_live (struct _fpstate_ia32 __user *save)
-{
-	struct task_struct *tsk = current;
-	struct pt_regs *ptp;
-	struct _fpreg_ia32 *fpregp;
-	char buf[32];
-	unsigned long fsr, fcr, fir, fdr;
-	unsigned long new_fsr;
-	unsigned long num128[2];
-	unsigned long mxcsr=0;
-	int fp_tos, fr8_st_map;
-
-	if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
-		return -EFAULT;
-
-	/* Read in fsr, fcr, fir, fdr and copy onto fpstate */
-	fsr = ia64_getreg(_IA64_REG_AR_FSR);
-	fcr = ia64_getreg(_IA64_REG_AR_FCR);
-	fir = ia64_getreg(_IA64_REG_AR_FIR);
-	fdr = ia64_getreg(_IA64_REG_AR_FDR);
-
-	/*
-	 * We need to clear the exception state before calling the signal handler. Clear
-	 * the bits 15, bits 0-7 in fp status word. Similar to the functionality of fnclex
-	 * instruction.
-	 */
-	new_fsr = fsr & ~0x80ff;
-	ia64_setreg(_IA64_REG_AR_FSR, new_fsr);
-
-	__put_user(fcr & 0xffff, &save->cw);
-	__put_user(fsr & 0xffff, &save->sw);
-	__put_user((fsr>>16) & 0xffff, &save->tag);
-	__put_user(fir, &save->ipoff);
-	__put_user((fir>>32) & 0xffff, &save->cssel);
-	__put_user(fdr, &save->dataoff);
-	__put_user((fdr>>32) & 0xffff, &save->datasel);
-	__put_user(fsr & 0xffff, &save->status);
-
-	mxcsr = ((fcr>>32) & 0xff80) | ((fsr>>32) & 0x3f);
-	__put_user(mxcsr & 0xffff, &save->mxcsr);
-	__put_user( 0, &save->magic); //#define X86_FXSR_MAGIC   0x0000
-
-	/*
-	 * save f8..f11  from pt_regs
-	 * save f12..f15 from live register set
-	 */
-	/*
-	 *  Find the location where f8 has to go in fp reg stack.  This depends on
-	 *  TOP(11:13) field of sw. Other f reg continue sequentially from where f8 maps
-	 *  to.
-	 */
-	fp_tos = (fsr>>11)&0x7;
-	fr8_st_map = (8-fp_tos)&0x7;
-	ptp = task_pt_regs(tsk);
-	fpregp = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
-	ia64f2ia32f(fpregp, &ptp->f8);
-	copy_to_user(&save->_st[(0+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64f2ia32f(fpregp, &ptp->f9);
-	copy_to_user(&save->_st[(1+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64f2ia32f(fpregp, &ptp->f10);
-	copy_to_user(&save->_st[(2+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64f2ia32f(fpregp, &ptp->f11);
-	copy_to_user(&save->_st[(3+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-
-	ia64_stfe(fpregp, 12);
-	copy_to_user(&save->_st[(4+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64_stfe(fpregp, 13);
-	copy_to_user(&save->_st[(5+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64_stfe(fpregp, 14);
-	copy_to_user(&save->_st[(6+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-	ia64_stfe(fpregp, 15);
-	copy_to_user(&save->_st[(7+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
-
-	ia64_stf8(&num128[0], 16);
-	ia64_stf8(&num128[1], 17);
-	copy_to_user(&save->_xmm[0], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 18);
-	ia64_stf8(&num128[1], 19);
-	copy_to_user(&save->_xmm[1], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 20);
-	ia64_stf8(&num128[1], 21);
-	copy_to_user(&save->_xmm[2], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 22);
-	ia64_stf8(&num128[1], 23);
-	copy_to_user(&save->_xmm[3], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 24);
-	ia64_stf8(&num128[1], 25);
-	copy_to_user(&save->_xmm[4], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 26);
-	ia64_stf8(&num128[1], 27);
-	copy_to_user(&save->_xmm[5], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 28);
-	ia64_stf8(&num128[1], 29);
-	copy_to_user(&save->_xmm[6], num128, sizeof(struct _xmmreg_ia32));
-
-	ia64_stf8(&num128[0], 30);
-	ia64_stf8(&num128[1], 31);
-	copy_to_user(&save->_xmm[7], num128, sizeof(struct _xmmreg_ia32));
-	return 0;
-}
-
-static int
-restore_ia32_fpstate_live (struct _fpstate_ia32 __user *save)
-{
-	struct task_struct *tsk = current;
-	struct pt_regs *ptp;
-	unsigned int lo, hi;
-	unsigned long num128[2];
-	unsigned long num64, mxcsr;
-	struct _fpreg_ia32 *fpregp;
-	char buf[32];
-	unsigned long fsr, fcr, fir, fdr;
-	int fp_tos, fr8_st_map;
-
-	if (!access_ok(VERIFY_READ, save, sizeof(*save)))
-		return(-EFAULT);
-
-	/*
-	 * Updating fsr, fcr, fir, fdr.
-	 * Just a bit more complicated than save.
-	 * - Need to make sure that we don't write any value other than the
-	 *   specific fpstate info
-	 * - Need to make sure that the untouched part of frs, fdr, fir, fcr
-	 *   should remain same while writing.
-	 * So, we do a read, change specific fields and write.
-	 */
-	fsr = ia64_getreg(_IA64_REG_AR_FSR);
-	fcr = ia64_getreg(_IA64_REG_AR_FCR);
-	fir = ia64_getreg(_IA64_REG_AR_FIR);
-	fdr = ia64_getreg(_IA64_REG_AR_FDR);
-
-	__get_user(mxcsr, (unsigned int __user *)&save->mxcsr);
-	/* setting bits 0..5 8..12 with cw and 39..47 from mxcsr */
-	__get_user(lo, (unsigned int __user *)&save->cw);
-	num64 = mxcsr & 0xff10;
-	num64 = (num64 << 32) | (lo & 0x1f3f);
-	fcr = (fcr & (~0xff1000001f3fUL)) | num64;
-
-	/* setting bits 0..31 with sw and tag and 32..37 from mxcsr */
-	__get_user(lo, (unsigned int __user *)&save->sw);
-	/* set bits 15,7 (fsw.b, fsw.es) to reflect the current error status */
-	if ( !(lo & 0x7f) )
-		lo &= (~0x8080);
-	__get_user(hi, (unsigned int __user *)&save->tag);
-	num64 = mxcsr & 0x3f;
-	num64 = (num64 << 16) | (hi & 0xffff);
-	num64 = (num64 << 16) | (lo & 0xffff);
-	fsr = (fsr & (~0x3fffffffffUL)) | num64;
-
-	/* setting bits 0..47 with cssel and ipoff */
-	__get_user(lo, (unsigned int __user *)&save->ipoff);
-	__get_user(hi, (unsigned int __user *)&save->cssel);
-	num64 = hi & 0xffff;
-	num64 = (num64 << 32) | lo;
-	fir = (fir & (~0xffffffffffffUL)) | num64;
-
-	/* setting bits 0..47 with datasel and dataoff */
-	__get_user(lo, (unsigned int __user *)&save->dataoff);
-	__get_user(hi, (unsigned int __user *)&save->datasel);
-	num64 = hi & 0xffff;
-	num64 = (num64 << 32) | lo;
-	fdr = (fdr & (~0xffffffffffffUL)) | num64;
-
-	ia64_setreg(_IA64_REG_AR_FSR, fsr);
-	ia64_setreg(_IA64_REG_AR_FCR, fcr);
-	ia64_setreg(_IA64_REG_AR_FIR, fir);
-	ia64_setreg(_IA64_REG_AR_FDR, fdr);
-
-	/*
-	 * restore f8..f11 onto pt_regs
-	 * restore f12..f15 onto live registers
-	 */
-	/*
-	 *  Find the location where f8 has to go in fp reg stack.  This depends on
-	 *  TOP(11:13) field of sw. Other f reg continue sequentially from where f8 maps
-	 *  to.
-	 */
-	fp_tos = (fsr>>11)&0x7;
-	fr8_st_map = (8-fp_tos)&0x7;
-	fpregp = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
-
-	ptp = task_pt_regs(tsk);
-	copy_from_user(fpregp, &save->_st[(0+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia32f2ia64f(&ptp->f8, fpregp);
-	copy_from_user(fpregp, &save->_st[(1+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia32f2ia64f(&ptp->f9, fpregp);
-	copy_from_user(fpregp, &save->_st[(2+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia32f2ia64f(&ptp->f10, fpregp);
-	copy_from_user(fpregp, &save->_st[(3+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia32f2ia64f(&ptp->f11, fpregp);
-
-	copy_from_user(fpregp, &save->_st[(4+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia64_ldfe(12, fpregp);
-	copy_from_user(fpregp, &save->_st[(5+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia64_ldfe(13, fpregp);
-	copy_from_user(fpregp, &save->_st[(6+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia64_ldfe(14, fpregp);
-	copy_from_user(fpregp, &save->_st[(7+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
-	ia64_ldfe(15, fpregp);
-
-	copy_from_user(num128, &save->_xmm[0], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(16, &num128[0]);
-	ia64_ldf8(17, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[1], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(18, &num128[0]);
-	ia64_ldf8(19, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[2], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(20, &num128[0]);
-	ia64_ldf8(21, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[3], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(22, &num128[0]);
-	ia64_ldf8(23, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[4], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(24, &num128[0]);
-	ia64_ldf8(25, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[5], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(26, &num128[0]);
-	ia64_ldf8(27, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[6], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(28, &num128[0]);
-	ia64_ldf8(29, &num128[1]);
-
-	copy_from_user(num128, &save->_xmm[7], sizeof(struct _xmmreg_ia32));
-	ia64_ldf8(30, &num128[0]);
-	ia64_ldf8(31, &num128[1]);
-	return 0;
-}
-
-static inline void
-sigact_set_handler (struct k_sigaction *sa, unsigned int handler, unsigned int restorer)
-{
-	if (handler + 1 <= 2)
-		/* SIG_DFL, SIG_IGN, or SIG_ERR: must sign-extend to 64-bits */
-		sa->sa.sa_handler = (__sighandler_t) A((int) handler);
-	else
-		sa->sa.sa_handler = (__sighandler_t) (((unsigned long) restorer << 32) | handler);
-}
-
-asmlinkage long
-sys32_sigsuspend (int history0, int history1, old_sigset_t mask)
-{
-	mask &= _BLOCKABLE;
-	spin_lock_irq(&current->sighand->siglock);
-	current->saved_sigmask = current->blocked;
-	siginitset(&current->blocked, mask);
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	current->state = TASK_INTERRUPTIBLE;
-	schedule();
-	set_restore_sigmask();
-	return -ERESTARTNOHAND;
-}
-
-asmlinkage long
-sys32_signal (int sig, unsigned int handler)
-{
-	struct k_sigaction new_sa, old_sa;
-	int ret;
-
-	sigact_set_handler(&new_sa, handler, 0);
-	new_sa.sa.sa_flags = SA_ONESHOT | SA_NOMASK;
-	sigemptyset(&new_sa.sa.sa_mask);
-
-	ret = do_sigaction(sig, &new_sa, &old_sa);
-
-	return ret ? ret : IA32_SA_HANDLER(&old_sa);
-}
-
-asmlinkage long
-sys32_rt_sigaction (int sig, struct sigaction32 __user *act,
-		    struct sigaction32 __user *oact, unsigned int sigsetsize)
-{
-	struct k_sigaction new_ka, old_ka;
-	unsigned int handler, restorer;
-	int ret;
-
-	/* XXX: Don't preclude handling different sized sigset_t's.  */
-	if (sigsetsize != sizeof(compat_sigset_t))
-		return -EINVAL;
-
-	if (act) {
-		ret = get_user(handler, &act->sa_handler);
-		ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
-		ret |= get_user(restorer, &act->sa_restorer);
-		ret |= copy_from_user(&new_ka.sa.sa_mask, &act->sa_mask, sizeof(compat_sigset_t));
-		if (ret)
-			return -EFAULT;
-
-		sigact_set_handler(&new_ka, handler, restorer);
-	}
-
-	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
-	if (!ret && oact) {
-		ret = put_user(IA32_SA_HANDLER(&old_ka), &oact->sa_handler);
-		ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-		ret |= put_user(IA32_SA_RESTORER(&old_ka), &oact->sa_restorer);
-		ret |= copy_to_user(&oact->sa_mask, &old_ka.sa.sa_mask, sizeof(compat_sigset_t));
-	}
-	return ret;
-}
-
-
-asmlinkage long
-sys32_rt_sigprocmask (int how, compat_sigset_t __user *set, compat_sigset_t __user *oset,
-		      unsigned int sigsetsize)
-{
-	mm_segment_t old_fs = get_fs();
-	sigset_t s;
-	long ret;
-
-	if (sigsetsize > sizeof(s))
-		return -EINVAL;
-
-	if (set) {
-		memset(&s, 0, sizeof(s));
-		if (copy_from_user(&s.sig, set, sigsetsize))
-			return -EFAULT;
-	}
-	set_fs(KERNEL_DS);
-	ret = sys_rt_sigprocmask(how,
-				 set ? (sigset_t __user *) &s : NULL,
-				 oset ? (sigset_t __user *) &s : NULL, sizeof(s));
-	set_fs(old_fs);
-	if (ret)
-		return ret;
-	if (oset) {
-		if (copy_to_user(oset, &s.sig, sigsetsize))
-			return -EFAULT;
-	}
-	return 0;
-}
-
-asmlinkage long
-sys32_rt_sigqueueinfo (int pid, int sig, compat_siginfo_t __user *uinfo)
-{
-	mm_segment_t old_fs = get_fs();
-	siginfo_t info;
-	int ret;
-
-	if (copy_siginfo_from_user32(&info, uinfo))
-		return -EFAULT;
-	set_fs(KERNEL_DS);
-	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
-	set_fs(old_fs);
-	return ret;
-}
-
-asmlinkage long
-sys32_sigaction (int sig, struct old_sigaction32 __user *act, struct old_sigaction32 __user *oact)
-{
-	struct k_sigaction new_ka, old_ka;
-	unsigned int handler, restorer;
-	int ret;
-
-	if (act) {
-		compat_old_sigset_t mask;
-
-		ret = get_user(handler, &act->sa_handler);
-		ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
-		ret |= get_user(restorer, &act->sa_restorer);
-		ret |= get_user(mask, &act->sa_mask);
-		if (ret)
-			return ret;
-
-		sigact_set_handler(&new_ka, handler, restorer);
-		siginitset(&new_ka.sa.sa_mask, mask);
-	}
-
-	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
-	if (!ret && oact) {
-		ret = put_user(IA32_SA_HANDLER(&old_ka), &oact->sa_handler);
-		ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-		ret |= put_user(IA32_SA_RESTORER(&old_ka), &oact->sa_restorer);
-		ret |= put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
-	}
-
-	return ret;
-}
-
-static int
-setup_sigcontext_ia32 (struct sigcontext_ia32 __user *sc, struct _fpstate_ia32 __user *fpstate,
-		       struct pt_regs *regs, unsigned long mask)
-{
-	int  err = 0;
-	unsigned long flag;
-
-	if (!access_ok(VERIFY_WRITE, sc, sizeof(*sc)))
-		return -EFAULT;
-
-	err |= __put_user((regs->r16 >> 32) & 0xffff, (unsigned int __user *)&sc->fs);
-	err |= __put_user((regs->r16 >> 48) & 0xffff, (unsigned int __user *)&sc->gs);
-	err |= __put_user((regs->r16 >> 16) & 0xffff, (unsigned int __user *)&sc->es);
-	err |= __put_user(regs->r16 & 0xffff, (unsigned int __user *)&sc->ds);
-	err |= __put_user(regs->r15, &sc->edi);
-	err |= __put_user(regs->r14, &sc->esi);
-	err |= __put_user(regs->r13, &sc->ebp);
-	err |= __put_user(regs->r12, &sc->esp);
-	err |= __put_user(regs->r11, &sc->ebx);
-	err |= __put_user(regs->r10, &sc->edx);
-	err |= __put_user(regs->r9, &sc->ecx);
-	err |= __put_user(regs->r8, &sc->eax);
-#if 0
-	err |= __put_user(current->tss.trap_no, &sc->trapno);
-	err |= __put_user(current->tss.error_code, &sc->err);
-#endif
-	err |= __put_user(regs->cr_iip, &sc->eip);
-	err |= __put_user(regs->r17 & 0xffff, (unsigned int __user *)&sc->cs);
-	/*
-	 *  `eflags' is in an ar register for this context
-	 */
-	flag = ia64_getreg(_IA64_REG_AR_EFLAG);
-	err |= __put_user((unsigned int)flag, &sc->eflags);
-	err |= __put_user(regs->r12, &sc->esp_at_signal);
-	err |= __put_user((regs->r17 >> 16) & 0xffff, (unsigned int __user *)&sc->ss);
-
-	if ( save_ia32_fpstate_live(fpstate) < 0 )
-		err = -EFAULT;
-	else
-		err |= __put_user((u32)(u64)fpstate, &sc->fpstate);
-
-#if 0
-	tmp = save_i387(fpstate);
-	if (tmp < 0)
-		err = 1;
-	else
-		err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
-
-	/* non-iBCS2 extensions.. */
-#endif
-	err |= __put_user(mask, &sc->oldmask);
-#if 0
-	err |= __put_user(current->tss.cr2, &sc->cr2);
-#endif
-	return err;
-}
-
-static int
-restore_sigcontext_ia32 (struct pt_regs *regs, struct sigcontext_ia32 __user *sc, int *peax)
-{
-	unsigned int err = 0;
-
-	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-	if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
-		return(-EFAULT);
-
-#define COPY(ia64x, ia32x)	err |= __get_user(regs->ia64x, &sc->ia32x)
-
-#define copyseg_gs(tmp)		(regs->r16 |= (unsigned long) (tmp) << 48)
-#define copyseg_fs(tmp)		(regs->r16 |= (unsigned long) (tmp) << 32)
-#define copyseg_cs(tmp)		(regs->r17 |= tmp)
-#define copyseg_ss(tmp)		(regs->r17 |= (unsigned long) (tmp) << 16)
-#define copyseg_es(tmp)		(regs->r16 |= (unsigned long) (tmp) << 16)
-#define copyseg_ds(tmp)		(regs->r16 |= tmp)
-
-#define COPY_SEG(seg)					\
-	{						\
-		unsigned short tmp;			\
-		err |= __get_user(tmp, &sc->seg);	\
-		copyseg_##seg(tmp);			\
-	}
-#define COPY_SEG_STRICT(seg)				\
-	{						\
-		unsigned short tmp;			\
-		err |= __get_user(tmp, &sc->seg);	\
-		copyseg_##seg(tmp|3);			\
-	}
-
-	/* To make COPY_SEGs easier, we zero r16, r17 */
-	regs->r16 = 0;
-	regs->r17 = 0;
-
-	COPY_SEG(gs);
-	COPY_SEG(fs);
-	COPY_SEG(es);
-	COPY_SEG(ds);
-	COPY(r15, edi);
-	COPY(r14, esi);
-	COPY(r13, ebp);
-	COPY(r12, esp);
-	COPY(r11, ebx);
-	COPY(r10, edx);
-	COPY(r9, ecx);
-	COPY(cr_iip, eip);
-	COPY_SEG_STRICT(cs);
-	COPY_SEG_STRICT(ss);
-	ia32_load_segment_descriptors(current);
-	{
-		unsigned int tmpflags;
-		unsigned long flag;
-
-		/*
-		 *  IA32 `eflags' is not part of `pt_regs', it's in an ar register which
-		 *  is part of the thread context.  Fortunately, we are executing in the
-		 *  IA32 process's context.
-		 */
-		err |= __get_user(tmpflags, &sc->eflags);
-		flag = ia64_getreg(_IA64_REG_AR_EFLAG);
-		flag &= ~0x40DD5;
-		flag |= (tmpflags & 0x40DD5);
-		ia64_setreg(_IA64_REG_AR_EFLAG, flag);
-
-		regs->r1 = -1;	/* disable syscall checks, r1 is orig_eax */
-	}
-
-	{
-		struct _fpstate_ia32 __user *buf = NULL;
-		u32    fpstate_ptr;
-		err |= get_user(fpstate_ptr, &(sc->fpstate));
-		buf = compat_ptr(fpstate_ptr);
-		if (buf) {
-			err |= restore_ia32_fpstate_live(buf);
-		}
-	}
-
-#if 0
-	{
-		struct _fpstate * buf;
-		err |= __get_user(buf, &sc->fpstate);
-		if (buf) {
-			if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
-				goto badframe;
-			err |= restore_i387(buf);
-		}
-	}
-#endif
-
-	err |= __get_user(*peax, &sc->eax);
-	return err;
-
-#if 0
-  badframe:
-	return 1;
-#endif
-}
-
-/*
- * Determine which stack to use..
- */
-static inline void __user *
-get_sigframe (struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
-{
-	unsigned long esp;
-
-	/* Default to using normal stack (truncate off sign-extension of bit 31: */
-	esp = (unsigned int) regs->r12;
-
-	/* This is the X/Open sanctioned signal stack switching.  */
-	if (ka->sa.sa_flags & SA_ONSTACK) {
-		int onstack = sas_ss_flags(esp);
-
-		if (onstack == 0)
-			esp = current->sas_ss_sp + current->sas_ss_size;
-		else if (onstack == SS_ONSTACK) {
-			/*
-			 * If we are on the alternate signal stack and would
-			 * overflow it, don't. Return an always-bogus address
-			 * instead so we will die with SIGSEGV.
-			 */
-			if (!likely(on_sig_stack(esp - frame_size)))
-				return (void __user *) -1L;
-		}
-	}
-	/* Legacy stack switching not supported */
-
-	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
-setup_frame_ia32 (int sig, struct k_sigaction *ka, sigset_t *set, struct pt_regs * regs)
-{
-	struct exec_domain *ed = current_thread_info()->exec_domain;
-	struct sigframe_ia32 __user *frame;
-	int err = 0;
-
-	frame = get_sigframe(ka, regs, sizeof(*frame));
-
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		goto give_sigsegv;
-
-	err |= __put_user((ed && ed->signal_invmap && sig < 32
-			   ? (int)(ed->signal_invmap[sig]) : sig), &frame->sig);
-
-	err |= setup_sigcontext_ia32(&frame->sc, &frame->fpstate, regs, set->sig[0]);
-
-	if (_COMPAT_NSIG_WORDS > 1)
-		err |= __copy_to_user(frame->extramask, (char *) &set->sig + 4,
-				      sizeof(frame->extramask));
-
-	/* Set up to return from userspace.  If provided, use a stub
-	   already in userspace.  */
-	if (ka->sa.sa_flags & SA_RESTORER) {
-		unsigned int restorer = IA32_SA_RESTORER(ka);
-		err |= __put_user(restorer, &frame->pretcode);
-	} else {
-		/* Pointing to restorer in ia32 gate page */
-		err |= __put_user(IA32_GATE_OFFSET, &frame->pretcode);
-	}
-
-	/* This is popl %eax ; movl $,%eax ; int $0x80
-	 * and there for historical reasons only.
-	 * See arch/i386/kernel/signal.c
-	 */
-
-	err |= __put_user(0xb858, (short __user *)(frame->retcode+0));
-	err |= __put_user(__IA32_NR_sigreturn, (int __user *)(frame->retcode+2));
-	err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
-
-	if (err)
-		goto give_sigsegv;
-
-	/* Set up registers for signal handler */
-	regs->r12 = (unsigned long) frame;
-	regs->cr_iip = IA32_SA_HANDLER(ka);
-
-	set_fs(USER_DS);
-
-#if 0
-	regs->eflags &= ~TF_MASK;
-#endif
-
-#if 0
-	printk("SIG deliver (%s:%d): sig=%d sp=%p pc=%lx ra=%x\n",
-               current->comm, current->pid, sig, (void *) frame, regs->cr_iip, frame->pretcode);
-#endif
-
-	return 1;
-
-  give_sigsegv:
-	force_sigsegv(sig, current);
-	return 0;
-}
-
-static int
-setup_rt_frame_ia32 (int sig, struct k_sigaction *ka, siginfo_t *info,
-		     sigset_t *set, struct pt_regs * regs)
-{
-	struct exec_domain *ed = current_thread_info()->exec_domain;
-	compat_uptr_t pinfo, puc;
-	struct rt_sigframe_ia32 __user *frame;
-	int err = 0;
-
-	frame = get_sigframe(ka, regs, sizeof(*frame));
-
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		goto give_sigsegv;
-
-	err |= __put_user((ed && ed->signal_invmap
-			   && sig < 32 ? ed->signal_invmap[sig] : sig), &frame->sig);
-
-	pinfo = (long __user) &frame->info;
-	puc = (long __user) &frame->uc;
-	err |= __put_user(pinfo, &frame->pinfo);
-	err |= __put_user(puc, &frame->puc);
-	err |= copy_siginfo_to_user32(&frame->info, info);
-
-	/* Create the ucontext.  */
-	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->r12), &frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
-	err |= setup_sigcontext_ia32(&frame->uc.uc_mcontext, &frame->fpstate, regs, set->sig[0]);
-	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-	if (err)
-		goto give_sigsegv;
-
-	/* Set up to return from userspace.  If provided, use a stub
-	   already in userspace.  */
-	if (ka->sa.sa_flags & SA_RESTORER) {
-		unsigned int restorer = IA32_SA_RESTORER(ka);
-		err |= __put_user(restorer, &frame->pretcode);
-	} else {
-		/* Pointing to rt_restorer in ia32 gate page */
-		err |= __put_user(IA32_GATE_OFFSET + 8, &frame->pretcode);
-	}
-
-	/* This is movl $,%eax ; int $0x80
-	 * and there for historical reasons only.
-	 * See arch/i386/kernel/signal.c
-	 */
-
-	err |= __put_user(0xb8, (char __user *)(frame->retcode+0));
-	err |= __put_user(__IA32_NR_rt_sigreturn, (int __user *)(frame->retcode+1));
-	err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
-
-	if (err)
-		goto give_sigsegv;
-
-	/* Set up registers for signal handler */
-	regs->r12 = (unsigned long) frame;
-	regs->cr_iip = IA32_SA_HANDLER(ka);
-
-	set_fs(USER_DS);
-
-#if 0
-	regs->eflags &= ~TF_MASK;
-#endif
-
-#if 0
-	printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%x\n",
-               current->comm, current->pid, (void *) frame, regs->cr_iip, frame->pretcode);
-#endif
-
-	return 1;
-
-give_sigsegv:
-	force_sigsegv(sig, current);
-	return 0;
-}
-
-int
-ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,
-		   sigset_t *set, struct pt_regs *regs)
-{
-       /* Set up the stack frame */
-       if (ka->sa.sa_flags & SA_SIGINFO)
-               return setup_rt_frame_ia32(sig, ka, info, set, regs);
-       else
-               return setup_frame_ia32(sig, ka, set, regs);
-}
-
-asmlinkage long
-sys32_sigreturn (int arg0, int arg1, int arg2, int arg3, int arg4, int arg5,
-		 int arg6, int arg7, struct pt_regs regs)
-{
-	unsigned long esp = (unsigned int) regs.r12;
-	struct sigframe_ia32 __user *frame = (struct sigframe_ia32 __user *)(esp - 8);
-	sigset_t set;
-	int eax;
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-
-	if (__get_user(set.sig[0], &frame->sc.oldmask)
-	    || (_COMPAT_NSIG_WORDS > 1 && __copy_from_user((char *) &set.sig + 4, &frame->extramask,
-							 sizeof(frame->extramask))))
-		goto badframe;
-
-	sigdelsetmask(&set, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked = set;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	if (restore_sigcontext_ia32(&regs, &frame->sc, &eax))
-		goto badframe;
-	return eax;
-
-  badframe:
-	force_sig(SIGSEGV, current);
-	return 0;
-}
-
-asmlinkage long
-sys32_rt_sigreturn (int arg0, int arg1, int arg2, int arg3, int arg4,
-		    int arg5, int arg6, int arg7, struct pt_regs regs)
-{
-	unsigned long esp = (unsigned int) regs.r12;
-	struct rt_sigframe_ia32 __user *frame = (struct rt_sigframe_ia32 __user *)(esp - 4);
-	sigset_t set;
-	int eax;
-
-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
-		goto badframe;
-	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
-		goto badframe;
-
-	sigdelsetmask(&set, ~_BLOCKABLE);
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked =  set;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	if (restore_sigcontext_ia32(&regs, &frame->uc.uc_mcontext, &eax))
-		goto badframe;
-
-	/* It is more difficult to avoid calling this function than to
-	   call it and ignore errors.  */
-	do_sigaltstack((stack_t __user *) &frame->uc.uc_stack, NULL, esp);
-
-	return eax;
-
-  badframe:
-	force_sig(SIGSEGV, current);
-	return 0;
-}