Rename 32- and 64-bit Intel files from "i386" to "x86"

This commit renames nine files that contain code used by both 32- and
64-bit Intel ports such that their names are prefixed with "x86"
rather than "i386".  All types, functions and variables within these
files are likewise renamed such that their names are prefixed with
"x86" rather than "i386".  This makes GDB follow the convention used
by gdbserver such that 32-bit Intel code lives in files called
"i386-*", 64-bit Intel code lives in files called "amd64-*", and code
for both 32- and 64-bit Intel lives in files called "x86-*".

This commit only renames OS-independent files.  The Linux ports of
both GDB and gdbserver now follow the i386/amd64/x86 convention fully.
Some ports still use the old convention where "i386" in file/function/
type/variable names can mean "32-bit only" or "32- and 64-bit" but I
don't want to touch ports I can't fully test except where absolutely
necessary.

gdb/ChangeLog:

	* i386-nat.h: Renamed as...
	* x86-nat.h: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.
	* i386-nat.c: Renamed as...
	* x86-nat.c: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.
	* common/i386-xstate.h: Renamed as...
	* common/x86-xstate.h: New file.  All type, function and variable
	name prefixes changed from "i386_" to "x86_".  All references
	updated.
	* nat/i386-cpuid.h: Renamed as...
	* nat/x86-cpuid.h: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.
	* nat/i386-gcc-cpuid.h: Renamed as...
	* nat/x86-gcc-cpuid.h: New file.  All type, function and variable
	name prefixes changed from "i386_" to "x86_".  All references
	updated.
	* nat/i386-dregs.h: Renamed as...
	* nat/x86-dregs.h: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.
	* nat/i386-dregs.c: Renamed as...
	* nat/x86-dregs.c: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.

gdb/gdbserver/ChangeLog:

	* i386-low.h: Renamed as...
	* x86-low.h: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.
	* i386-low.c: Renamed as...
	* x86-low.c: New file.  All type, function and variable name
	prefixes changed from "i386_" to "x86_".  All references updated.

1 files changed, 63 insertions, 0 deletions

diff --git a/gdb/nat/x86-cpuid.h b/gdb/nat/x86-cpuid.h
new file mode 100644
index 0000000..3e4a481
--- /dev/null
+++ b/gdb/nat/x86-cpuid.h
@@ -0,0 +1,63 @@
+/* C API for x86 cpuid insn.
+   Copyright (C) 2007-2014 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This file is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 3, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef X86_CPUID_COMMON_H
+#define X86_CPUID_COMMON_H
+
+/* Always include the header for the cpu bit defines.  */
+#include "x86-gcc-cpuid.h"
+
+#if defined(__i386__) || defined(__x86_64__)
+
+/* Return cpuid data for requested cpuid level, as found in returned
+   eax, ebx, ecx and edx registers.  The function checks if cpuid is
+   supported and returns 1 for valid cpuid information or 0 for
+   unsupported cpuid level.  Pointers may be non-null.  */
+
+static __inline int
+x86_cpuid (unsigned int __level,
+	    unsigned int *__eax, unsigned int *__ebx,
+	    unsigned int *__ecx, unsigned int *__edx)
+{
+  unsigned int __scratch;
+
+  if (!__eax)
+    __eax = &__scratch;
+  if (!__ebx)
+    __ebx = &__scratch;
+  if (!__ecx)
+    __ecx = &__scratch;
+  if (!__edx)
+    __edx = &__scratch;
+
+  return __get_cpuid (__level, __eax, __ebx, __ecx, __edx);
+}
+
+#else
+
+static __inline int
+x86_cpuid (unsigned int __level,
+	    unsigned int *__eax, unsigned int *__ebx,
+	    unsigned int *__ecx, unsigned int *__edx)
+{
+  return 0;
+}
+
+#endif /* i386 && x86_64 */
+
+#endif /* X86_CPUID_COMMON_H */