[PATCH] provide kernel_execve on all architectures

[linux-2.6] / arch / m68knommu / kernel / sys_m68k.c

diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c
index d87e1e0a1336d8aed5f6dffeeb61e75616d03870..c3494b8447d155f890a319097b97fdf352eb4319 100644 (file)
--- a/arch/m68knommu/kernel/sys_m68k.c
+++ b/arch/m68knommu/kernel/sys_m68k.c
@@ -26,6 +26,7 @@
 #include <asm/traps.h>
 #include <asm/ipc.h>
 #include <asm/cacheflush.h>
+#include <asm/unistd.h>
 
 /*
  * sys_pipe() is the normal C calling standard for creating
@@ -206,3 +207,17 @@ asmlinkage int sys_getpagesize(void)
        return PAGE_SIZE;
 }
 
+/*
+ * 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[])
+{
+       register long __res asm ("%d0") = __NR_execve;
+       register long __a asm ("%d1") = (long)(filename);
+       register long __b asm ("%d2") = (long)(argv);
+       register long __c asm ("%d3") = (long)(envp);
+       asm volatile ("trap  #0" : "+d" (__res)
+                       : "d" (__a), "d" (__b), "d" (__c));
+       return __res;
+}