1 files changed, 6 insertions, 107 deletions

diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
index 00124946986..47c20ba4616 100644
--- a/arch/score/kernel/sys_score.c
+++ b/arch/score/kernel/sys_score.c
@@ -28,6 +28,7 @@
 #include <linux/mm.h>
 #include <linux/mman.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/unistd.h>
 #include <linux/syscalls.h>
 #include <asm/syscalls.h>
@@ -36,116 +37,14 @@ asmlinkage long
 sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
 	  unsigned long flags, unsigned long fd, unsigned long pgoff)
 {
-	int error = -EBADF;
-	struct file *file = NULL;
-
-	if (pgoff & (~PAGE_MASK >> 12))
-		return -EINVAL;
-
-	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-	if (!(flags & MAP_ANONYMOUS)) {
-		file = fget(fd);
-		if (!file)
-			return error;
-	}
-
-	down_write(&current->mm->mmap_sem);
-	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-	up_write(&current->mm->mmap_sem);
-
-	if (file)
-		fput(file);
-
-	return error;
+	return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
 }
 
 asmlinkage long
 sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
-	unsigned long flags, unsigned long fd, off_t pgoff)
-{
-	return sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
-}
-
-asmlinkage long
-score_fork(struct pt_regs *regs)
-{
-	return do_fork(SIGCHLD, regs->regs[0], regs, 0, NULL, NULL);
-}
-
-/*
- * Clone a task - this clones the calling program thread.
- * This is called indirectly via a small wrapper
- */
-asmlinkage long
-score_clone(struct pt_regs *regs)
-{
-	unsigned long clone_flags;
-	unsigned long newsp;
-	int __user *parent_tidptr, *child_tidptr;
-
-	clone_flags = regs->regs[4];
-	newsp = regs->regs[5];
-	if (!newsp)
-		newsp = regs->regs[0];
-	parent_tidptr = (int __user *)regs->regs[6];
-	child_tidptr = (int __user *)regs->regs[8];
-
-	return do_fork(clone_flags, newsp, regs, 0,
-			parent_tidptr, child_tidptr);
-}
-
-asmlinkage long
-score_vfork(struct pt_regs *regs)
-{
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
-			regs->regs[0], regs, 0, NULL, NULL);
-}
-
-/*
- * sys_execve() executes a new program.
- * This is called indirectly via a small wrapper
- */
-asmlinkage long
-score_execve(struct pt_regs *regs)
-{
-	int error;
-	char *filename;
-
-	filename = getname((char __user*)regs->regs[4]);
-	error = PTR_ERR(filename);
-	if (IS_ERR(filename))
-		return error;
-
-	error = do_execve(filename, (char __user *__user*)regs->regs[5],
-			  (char __user *__user *) regs->regs[6], regs);
-
-	putname(filename);
-	return error;
-}
-
-/*
- * Do a system call from kernel instead of calling sys_execve so we
- * end up with proper pt_regs.
- */
-int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+	unsigned long flags, unsigned long fd, off_t offset)
 {
-	register unsigned long __r4 asm("r4") = (unsigned long) filename;
-	register unsigned long __r5 asm("r5") = (unsigned long) argv;
-	register unsigned long __r6 asm("r6") = (unsigned long) envp;
-	register unsigned long __r7 asm("r7");
-
-	__asm__ __volatile__ ("	\n"
-		"ldi	r27, %5		\n"
-		"syscall		\n"
-		"mv	%0, r4		\n"
-		"mv	%1, r7		\n"
-		: "=&r" (__r4), "=r" (__r7)
-		: "r" (__r4), "r" (__r5), "r" (__r6), "i" (__NR_execve)
-		: "r8", "r9", "r10", "r11", "r22", "r23", "r24", "r25",
-		  "r26", "r27", "memory");
-
-	if (__r7 == 0)
-		return __r4;
-
-	return -__r4;
+	if (unlikely(offset & ~PAGE_MASK))
+		return -EINVAL;
+	return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
 }