um: stop polluting the namespace with registers.h contents

Only one extern in there is needed in processor-generic.h, and it's
not needed anywhere else.  So move it over there and get rid of
the include in processor-generic.h, adding includes of registers.h
to the few files that need the declarations in it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

arch/um/include/asm/processor-generic.h

@@ -11,7 +11,6 @@ struct pt_regs;
 struct task_struct;
 
 #include <asm/ptrace.h>
-#include <registers.h>
 #include <sysdep/archsetjmp.h>
 
 #include <linux/prefetch.h>
@@ -105,6 +104,7 @@ extern struct cpuinfo_um boot_cpu_data;
 #define current_cpu_data boot_cpu_data
 #define cache_line_size()	(boot_cpu_data.cache_alignment)
 
+extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
 #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
 extern unsigned long __get_wchan(struct task_struct *p);
 

arch/um/include/shared/registers.h

@@ -7,7 +7,6 @@
 #define __REGISTERS_H
 
 #include <sysdep/ptrace.h>
-#include <sysdep/archsetjmp.h>
 
 extern int save_i387_registers(int pid, unsigned long *fp_regs);
 extern int restore_i387_registers(int pid, unsigned long *fp_regs);
@@ -19,7 +18,6 @@ extern int save_registers(int pid, struct uml_pt_regs *regs);
 extern int restore_pid_registers(int pid, struct uml_pt_regs *regs);
 extern int init_pid_registers(int pid);
 extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs);
-extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
 extern int get_fp_registers(int pid, unsigned long *regs);
 extern int put_fp_registers(int pid, unsigned long *regs);
 

arch/um/kernel/exec.c

@@ -16,6 +16,7 @@
 #include <linux/uaccess.h>
 #include <as-layout.h>
 #include <mem_user.h>
+#include <registers.h>
 #include <skas.h>
 #include <os.h>
 

arch/um/kernel/process.c

@@ -31,6 +31,7 @@
 #include <kern_util.h>
 #include <os.h>
 #include <skas.h>
+#include <registers.h>
 #include <linux/time-internal.h>
 
 /*

arch/x86/um/os-Linux/registers.c

@@ -15,6 +15,7 @@
 #include <sys/uio.h>
 #include <asm/sigcontext.h>
 #include <linux/elf.h>
+#include <registers.h>
 
 int have_xstate_support;
 

arch/x86/um/ptrace_32.c

@@ -7,6 +7,7 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 #include <asm/ptrace-abi.h>
+#include <registers.h>
 #include <skas.h>
 
 extern int arch_switch_tls(struct task_struct *to);

arch/x86/um/ptrace_64.c

@@ -11,6 +11,7 @@
 #define __FRAME_OFFSETS
 #include <asm/ptrace.h>
 #include <linux/uaccess.h>
+#include <registers.h>
 #include <asm/ptrace-abi.h>
 
 /*

arch/x86/um/signal.c

@@ -12,6 +12,7 @@
 #include <linux/uaccess.h>
 #include <asm/ucontext.h>
 #include <frame_kern.h>
+#include <registers.h>
 #include <skas.h>
 
 #ifdef CONFIG_X86_32

arch/x86/um/syscalls_64.c

@@ -10,6 +10,7 @@
 #include <linux/syscalls.h>
 #include <linux/uaccess.h>
 #include <asm/prctl.h> /* XXX This should get the constants from libc */
+#include <registers.h>
 #include <os.h>
 #include <registers.h>