Merge master.kernel.org:/pub/scm/linux/kernel/git/bunk/trivial

[powerpc.git] / arch / mips / kernel / syscall.c

diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 21e3e13..ee98eeb 100644 (file)
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -7,6 +7,7 @@
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  * Copyright (C) 2001 MIPS Technologies, Inc.
  */
+#include <linux/config.h>
 #include <linux/a.out.h>
 #include <linux/errno.h>
 #include <linux/linkage.h>
@@ -26,6 +27,7 @@
 #include <linux/msg.h>
 #include <linux/shm.h>
 #include <linux/compiler.h>
+#include <linux/module.h>
 
 #include <asm/branch.h>
 #include <asm/cachectl.h>
@@ -56,6 +58,8 @@ out:
 
 unsigned long shm_align_mask = PAGE_SIZE - 1;  /* Sane caches */
 
+EXPORT_SYMBOL(shm_align_mask);
+
 #define COLOUR_ALIGN(addr,pgoff)                               \
        ((((addr) + shm_align_mask) & ~shm_align_mask) +        \
         (((pgoff) << PAGE_SHIFT) & shm_align_mask))
@@ -173,14 +177,28 @@ _sys_clone(nabi_no_regargs struct pt_regs regs)
 {
        unsigned long clone_flags;
        unsigned long newsp;
-       int *parent_tidptr, *child_tidptr;
+       int __user *parent_tidptr, *child_tidptr;
 
        clone_flags = regs.regs[4];
        newsp = regs.regs[5];
        if (!newsp)
                newsp = regs.regs[29];
-       parent_tidptr = (int *) regs.regs[6];
-       child_tidptr = (int *) regs.regs[7];
+       parent_tidptr = (int __user *) regs.regs[6];
+#ifdef CONFIG_32BIT
+       /* We need to fetch the fifth argument off the stack.  */
+       child_tidptr = NULL;
+       if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)) {
+               int __user *__user *usp = (int __user *__user *) regs.regs[29];
+               if (regs.regs[2] == __NR_syscall) {
+                       if (get_user (child_tidptr, &usp[5]))
+                               return -EFAULT;
+               }
+               else if (get_user (child_tidptr, &usp[4]))
+                       return -EFAULT;
+       }
+#else
+       child_tidptr = (int __user *) regs.regs[8];
+#endif
        return do_fork(clone_flags, newsp, &regs, 0,
                       parent_tidptr, child_tidptr);
 }
@@ -242,6 +260,16 @@ asmlinkage int sys_olduname(struct oldold_utsname * name)
        return error;
 }
 
+void sys_set_thread_area(unsigned long addr)
+{
+       struct thread_info *ti = current->thread_info;
+
+       ti->tp_value = addr;
+
+       /* If some future MIPS implementation has this register in hardware,
+        * we will need to update it here (and in context switches).  */
+}
+
 asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3)
 {
        int     tmp, len;