1 files changed, 15 insertions, 0 deletions

diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
index dc6e3bbeba31..4048397f1740 100644
--- a/arch/i386/kernel/sys_i386.c
+++ b/arch/i386/kernel/sys_i386.c
@@ -21,6 +21,7 @@
 #include <linux/utsname.h>
 
 #include <asm/uaccess.h>
+#include <asm/unistd.h>
 #include <asm/ipc.h>
 
 /*
@@ -248,3 +249,17 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name)
 
         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[])
+{
+        long __res;
+        asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx"
+        : "=a" (__res)
+        : "0" (__NR_execve),"ri" (filename),"c" (argv), "d" (envp) : "memory");
+        return __res;
+}