unicore32: switch to generic kernel_thread()/kernel_execve()

[karo-tx-linux.git] / arch / unicore32 / kernel / sys.c

diff --git a/arch/unicore32/kernel/sys.c b/arch/unicore32/kernel/sys.c
index fabdee96110b46821c911fa9de0be5ba30460b57..8b6e4cc5739395f58048361c60454ac3988f11d3 100644 (file)
--- a/arch/unicore32/kernel/sys.c
+++ b/arch/unicore32/kernel/sys.c
@@ -63,48 +63,6 @@ out:
        return error;
 }
 
-int kernel_execve(const char *filename,
-                 const char *const argv[],
-                 const char *const envp[])
-{
-       struct pt_regs regs;
-       int ret;
-
-       memset(&regs, 0, sizeof(struct pt_regs));
-       ret = do_execve(filename,
-                       (const char __user *const __user *)argv,
-                       (const char __user *const __user *)envp, &regs);
-       if (ret < 0)
-               goto out;
-
-       /*
-        * Save argc to the register structure for userspace.
-        */
-       regs.UCreg_00 = ret;
-
-       /*
-        * We were successful.  We won't be returning to our caller, but
-        * instead to user space by manipulating the kernel stack.
-        */
-       asm("add        r0, %0, %1\n\t"
-               "mov    r1, %2\n\t"
-               "mov    r2, %3\n\t"
-               "mov    r22, #0\n\t"    /* not a syscall */
-               "mov    r23, %0\n\t"    /* thread structure */
-               "b.l    memmove\n\t"    /* copy regs to top of stack */
-               "mov    sp, r0\n\t"     /* reposition stack pointer */
-               "b      ret_to_user"
-               :
-               : "r" (current_thread_info()),
-                 "Ir" (THREAD_START_SP - sizeof(regs)),
-                 "r" (&regs),
-                 "Ir" (sizeof(regs))
-               : "r0", "r1", "r2", "r3", "ip", "lr", "memory");
-
- out:
-       return ret;
-}
-
 /* Note: used by the compat code even in 64-bit Linux. */
 SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
                unsigned long, prot, unsigned long, flags,