[S390] s390: use sys_pause for 31bit pause entry point

[linux-2.6-omap-h63xx.git] / arch / s390 / kernel / compat_linux.c

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 664c669b1856ac881e96bca89b8c5a2429a517c6..98e246dc02338bef90d6cd9f27d39069b4cac414 100644 (file)
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -58,11 +58,10 @@
 #include <linux/vfs.h>
 #include <linux/ptrace.h>
 #include <linux/fadvise.h>
+#include <linux/ipc.h>
 
 #include <asm/types.h>
-#include <asm/ipc.h>
 #include <asm/uaccess.h>
-#include <asm/semaphore.h>
 
 #include <net/scm.h>
 #include <net/sock.h>
@@ -495,29 +494,34 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
  * sys32_execve() executes a new program after the asm stub has set
  * things up for us.  This should basically do what I want it to.
  */
-asmlinkage long
-sys32_execve(struct pt_regs regs)
+asmlinkage long sys32_execve(void)
 {
-        int error;
-        char * filename;
+       struct pt_regs *regs = task_pt_regs(current);
+       char *filename;
+       unsigned long result;
+       int rc;
 
-        filename = getname(compat_ptr(regs.orig_gpr2));
-        error = PTR_ERR(filename);
-        if (IS_ERR(filename))
+       filename = getname(compat_ptr(regs->orig_gpr2));
+       if (IS_ERR(filename)) {
+               result = PTR_ERR(filename);
                 goto out;
-        error = compat_do_execve(filename, compat_ptr(regs.gprs[3]),
-                                compat_ptr(regs.gprs[4]), &regs);
-       if (error == 0)
-       {
-               task_lock(current);
-               current->ptrace &= ~PT_DTRACE;
-               task_unlock(current);
-               current->thread.fp_regs.fpc=0;
-               asm volatile("sfpc %0,0" : : "d" (0));
        }
+       rc = compat_do_execve(filename, compat_ptr(regs->gprs[3]),
+                             compat_ptr(regs->gprs[4]), regs);
+       if (rc) {
+               result = rc;
+               goto out_putname;
+       }
+       task_lock(current);
+       current->ptrace &= ~PT_DTRACE;
+       task_unlock(current);
+       current->thread.fp_regs.fpc=0;
+       asm volatile("sfpc %0,0" : : "d" (0));
+       result = regs->gprs[2];
+out_putname:
         putname(filename);
 out:
-        return error;
+       return result;
 }
 
 
@@ -604,14 +608,6 @@ asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct time
        return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
 }
 
-/* These are here just in case some old sparc32 binary calls it. */
-asmlinkage long sys32_pause(void)
-{
-       current->state = TASK_INTERRUPTIBLE;
-       schedule();
-       return -ERESTARTNOHAND;
-}
-
 asmlinkage long sys32_pread64(unsigned int fd, char __user *ubuf,
                                size_t count, u32 poshi, u32 poslo)
 {
@@ -918,19 +914,20 @@ asmlinkage long sys32_write(unsigned int fd, char __user * buf, size_t count)
        return sys_write(fd, buf, count);
 }
 
-asmlinkage long sys32_clone(struct pt_regs regs)
+asmlinkage long sys32_clone(void)
 {
-        unsigned long clone_flags;
-        unsigned long newsp;
+       struct pt_regs *regs = task_pt_regs(current);
+       unsigned long clone_flags;
+       unsigned long newsp;
        int __user *parent_tidptr, *child_tidptr;
 
-        clone_flags = regs.gprs[3] & 0xffffffffUL;
-        newsp = regs.orig_gpr2 & 0x7fffffffUL;
-       parent_tidptr = compat_ptr(regs.gprs[4]);
-       child_tidptr = compat_ptr(regs.gprs[5]);
-        if (!newsp)
-                newsp = regs.gprs[15];
-        return do_fork(clone_flags, newsp, &regs, 0,
+       clone_flags = regs->gprs[3] & 0xffffffffUL;
+       newsp = regs->orig_gpr2 & 0x7fffffffUL;
+       parent_tidptr = compat_ptr(regs->gprs[4]);
+       child_tidptr = compat_ptr(regs->gprs[5]);
+       if (!newsp)
+               newsp = regs->gprs[15];
+       return do_fork(clone_flags, newsp, regs, 0,
                       parent_tidptr, child_tidptr);
 }