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Diffstat (limited to 'arch/ia64/ia32/ia32_signal.c')
-rw-r--r--arch/ia64/ia32/ia32_signal.c1010
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 b763ca19ef17..000000000000
--- 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;
-}