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, 7 insertions, 7 deletions

diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index 97a2890..850ca20 100644
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -31,7 +31,7 @@
 #include "amd64-linux-tdep.h"
 #include "i386-linux-tdep.h"
 #include "linux-tdep.h"
-#include "i386-xstate.h"
+#include "x86-xstate.h"
 
 #include "amd64-tdep.h"
 #include "solib-svr4.h"
@@ -58,7 +58,7 @@ static struct core_regset_section amd64_linux_regset_sections[] =
 {
   { ".reg", 27 * 8, "general-purpose" },
   { ".reg2", 512, "floating-point" },
-  { ".reg-xstate", I386_XSTATE_MAX_SIZE, "XSAVE extended state" },
+  { ".reg-xstate", X86_XSTATE_MAX_SIZE, "XSAVE extended state" },
   { NULL, 0 }
 };
 
@@ -1583,20 +1583,20 @@ amd64_linux_core_read_description (struct gdbarch *gdbarch,
   /* Linux/x86-64.  */
   uint64_t xcr0 = i386_linux_core_read_xcr0 (abfd);
 
-  switch (xcr0 & I386_XSTATE_ALL_MASK)
+  switch (xcr0 & X86_XSTATE_ALL_MASK)
     {
-    case I386_XSTATE_MPX_AVX512_MASK:
-    case I386_XSTATE_AVX512_MASK:
+    case X86_XSTATE_MPX_AVX512_MASK:
+    case X86_XSTATE_AVX512_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
 	return tdesc_x32_avx512_linux;
       else
 	return tdesc_amd64_avx512_linux;
-    case I386_XSTATE_MPX_MASK:
+    case X86_XSTATE_MPX_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
 	return tdesc_x32_avx_linux;  /* No x32 MPX falling back to AVX.  */
       else
 	return tdesc_amd64_mpx_linux;
-    case I386_XSTATE_AVX_MASK:
+    case X86_XSTATE_AVX_MASK:
       if (gdbarch_ptr_bit (gdbarch) == 32)
 	return tdesc_x32_avx_linux;
       else