uml: tidy ptrace interface

Tidy the ptrace interface code.  Removed a bunch of unused macros.
Started converting register sets from arrays of longs to structures.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/sysdep-i386/ptrace_user.h

@@ -41,38 +41,10 @@
 #define PT_SP_OFFSET PT_OFFSET(UESP)
 #define PT_SP(regs) ((regs)[UESP])
 
-#define FP_SIZE ((HOST_XFP_SIZE > HOST_FP_SIZE) ? HOST_XFP_SIZE : HOST_FP_SIZE)
+#define FP_SIZE ((HOST_FPX_SIZE > HOST_FP_SIZE) ? HOST_FPX_SIZE : HOST_FP_SIZE)
 
 #ifndef FRAME_SIZE
 #define FRAME_SIZE (17)
 #endif
-#define FRAME_SIZE_OFFSET (FRAME_SIZE * sizeof(unsigned long))
-
-#define FP_FRAME_SIZE (27)
-#define FPX_FRAME_SIZE (128)
-
-#ifdef PTRACE_GETREGS
-#define UM_HAVE_GETREGS
-#endif
-
-#ifdef PTRACE_SETREGS
-#define UM_HAVE_SETREGS
-#endif
-
-#ifdef PTRACE_GETFPREGS
-#define UM_HAVE_GETFPREGS
-#endif
-
-#ifdef PTRACE_SETFPREGS
-#define UM_HAVE_SETFPREGS
-#endif
-
-#ifdef PTRACE_GETFPXREGS
-#define UM_HAVE_GETFPXREGS
-#endif
-
-#ifdef PTRACE_SETFPXREGS
-#define UM_HAVE_SETFPXREGS
-#endif
 
 #endif

arch/um/include/sysdep-x86_64/ptrace_user.h

@@ -48,7 +48,8 @@
 #define PT_ORIG_RAX_OFFSET (ORIG_RAX)
 #define PT_ORIG_RAX(regs) ((regs)[PT_INDEX(ORIG_RAX)])
 
-/* x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
+/*
+ * x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
  * it's defined in the kernel's include/linux/ptrace.h. Additionally, use the
  * 2.4 name and value for 2.4 host compatibility.
  */
@@ -56,7 +57,8 @@
 #define PTRACE_OLDSETOPTIONS 21
 #endif
 
-/* These are before the system call, so the system call number is RAX
+/*
+ * These are before the system call, so the system call number is RAX
  * rather than ORIG_RAX, and arg4 is R10 rather than RCX
  */
 #define REGS_SYSCALL_NR PT_INDEX(RAX)
@@ -73,14 +75,3 @@
 #define FP_SIZE (HOST_FP_SIZE)
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */