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-rw-r--r--arch/mips/kernel/syscall.c31
1 files changed, 28 insertions, 3 deletions
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 8fde242596f9..ee98eeb65e85 100644
--- 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>
@@ -176,14 +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);
}
@@ -245,6 +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;
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