Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[pandora-kernel.git] / arch / um / os-Linux / sys-x86_64 / registers.c

diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index a2d7e0c..9bfa789 100644 (file)
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -1,81 +1,27 @@
 /*
- * Copyright (C) 2004 PathScale, Inc
+ * Copyright (C) 2006-2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
 #include <errno.h>
-#include <string.h>
-#include "ptrace_user.h"
-#include "uml-config.h"
-#include "skas_ptregs.h"
-#include "registers.h"
+#include <sys/ptrace.h>
+#define __FRAME_OFFSETS
+#include <asm/ptrace.h>
 #include "longjmp.h"
 #include "user.h"
 
-/* These are set once at boot time and not changed thereafter */
-
-static unsigned long exec_regs[HOST_FRAME_SIZE];
-static unsigned long exec_fp_regs[HOST_FP_SIZE];
-
-void init_thread_registers(union uml_pt_regs *to)
-{
-       memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs));
-       memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp));
-}
-
-static int move_registers(int pid, int int_op, int fp_op,
-                         union uml_pt_regs *regs)
+int save_fp_registers(int pid, unsigned long *fp_regs)
 {
-       if(ptrace(int_op, pid, 0, regs->skas.regs) < 0)
-               return -errno;
-
-       if(ptrace(fp_op, pid, 0, regs->skas.fp) < 0)
+       if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0)
                return -errno;
-
        return 0;
 }
 
-void save_registers(int pid, union uml_pt_regs *regs)
-{
-       int err;
-
-       err = move_registers(pid, PTRACE_GETREGS, PTRACE_GETFPREGS, regs);
-       if(err)
-               panic("save_registers - saving registers failed, errno = %d\n",
-                     -err);
-}
-
-void restore_registers(int pid, union uml_pt_regs *regs)
+int restore_fp_registers(int pid, unsigned long *fp_regs)
 {
-       int err;
-
-       err = move_registers(pid, PTRACE_SETREGS, PTRACE_SETFPREGS, regs);
-       if(err)
-               panic("restore_registers - saving registers failed, "
-                     "errno = %d\n", -err);
-}
-
-void init_registers(int pid)
-{
-       int err;
-
-       err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
-       if(err)
-               panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
-                     errno);
-
-       err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
-       if(err)
-               panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d",
-                     errno);
-}
-
-void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
-{
-       memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
-       if(fp_regs != NULL)
-               memcpy(fp_regs, exec_fp_regs,
-                      HOST_FP_SIZE * sizeof(unsigned long));
+       if(ptrace(PTRACE_SETFPREGS, pid, 0, fp_regs) < 0)
+               return -errno;
+       return 0;
 }
 
 unsigned long get_thread_reg(int reg, jmp_buf *buf)