uml: create arch.h

This patch moves the declarations of the architecture hooks from user_util.h
to a new header, arch.c, and adds the necessary includes to files which need
those declarations.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/arch.h

+/*
+ * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __ARCH_H__
+#define __ARCH_H__
+
+#include "sysdep/ptrace.h"
+
+extern void arch_check_bugs(void);
+extern int arch_fixup(unsigned long address, void *sc_ptr);
+extern int arch_handle_signal(int sig, union uml_pt_regs *regs);
+
+#endif

arch/um/include/user_util.h

@@ -65,10 +65,6 @@ extern int attach(int pid);
 extern void kill_child_dead(int pid);
 extern int cont(int pid);
 extern void check_sigio(void);
-extern void arch_check_bugs(void);
-extern int arch_handle_signal(int sig, union uml_pt_regs *regs);
-extern int arch_fixup(unsigned long address, void *sc_ptr);
-extern void arch_init_thread(void);
 extern int raw(int fd);
 
 #endif

arch/um/kernel/trap.c

@@ -20,6 +20,7 @@
 #include "sysdep/sigcontext.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "arch.h"
 #include "kern.h"
 #include "chan_kern.h"
 #include "mconsole_kern.h"

arch/um/kernel/um_arch.c

@@ -28,6 +28,7 @@
 #include "asm/current.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "arch.h"
 #include "kern.h"
 #include "mem_user.h"
 #include "mem.h"