Move some ppc macros to nat/ppc-linux.h

When I use PPC_FEATURE_BOOKE in GDBserver, I find it is defined in GDB
but not in GDBserver.  After taking a further look, I find some macros
are duplicated between ppc-linux-nat.c and linux-ppc-low.c, so this
patch is to move them into nat/ppc-linux.h.

gdb/gdbserver:

2015-01-14  Yao Qi  <yao@codesourcery.com>

	* linux-ppc-low.c: Include "nat/ppc-linux.h".
	 (PPC_FEATURE_HAS_VSX): Move to nat/ppc-linux.h.
	(PPC_FEATURE_HAS_ALTIVEC,  PPC_FEATURE_HAS_SPE): Likewise.
	(PT_ORIG_R3, PT_TRAP): Likewise.
	(PTRACE_GETVSXREGS, PTRACE_SETVSXREGS): Likewise.
	(PTRACE_GETVRREGS, PTRACE_SETVRREGS): Likewise.
	(PTRACE_GETEVRREGS, PTRACE_SETEVRREGS): Likewise.

gdb:

2015-01-14  Yao Qi  <yao@codesourcery.com>

	* ppc-linux-nat.c (PT_ORIG_R3, PT_TRAP): Move to
	nat/ppc-linux.h.
	(PPC_FEATURE_CELL, PPC_FEATURE_BOOKE): Likewise.
	(PPC_FEATURE_HAS_DFP): Likewise.
	(PTRACE_GETVRREGS, PTRACE_SETVRREGS): Likewise.
	(PTRACE_GETVSXREGS, PTRACE_SETVSXREGS): Likewise.
	(PTRACE_GETEVRREGS, PTRACE_SETEVRREGS): Likewise.
	Include "nat/ppc-linux.h".
	* nat/ppc-linux.h: New file.
	* Makefile.in (HFILES_NO_SRCDIR): Add nat/ppc-linux.h.

1 files changed, 85 insertions, 0 deletions

diff --git a/gdb/nat/ppc-linux.h b/gdb/nat/ppc-linux.h
new file mode 100644
index 0000000..30d936f
--- /dev/null
+++ b/gdb/nat/ppc-linux.h
@@ -0,0 +1,85 @@
+/* Copyright (C) 1995-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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 of the License, 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 PPC_LINUX_H
+#define PPC_LINUX_H 1
+
+#include <asm/ptrace.h>
+#include <asm/cputable.h>
+
+/* This sometimes isn't defined.  */
+#ifndef PT_ORIG_R3
+#define PT_ORIG_R3 34
+#endif
+#ifndef PT_TRAP
+#define PT_TRAP 40
+#endif
+
+/* The PPC_FEATURE_* defines should be provided by <asm/cputable.h>.
+   If they aren't, we can provide them ourselves (their values are fixed
+   because they are part of the kernel ABI).  They are used in the AT_HWCAP
+   entry of the AUXV.  */
+#ifndef PPC_FEATURE_CELL
+#define PPC_FEATURE_CELL 0x00010000
+#endif
+#ifndef PPC_FEATURE_BOOKE
+#define PPC_FEATURE_BOOKE 0x00008000
+#endif
+#ifndef PPC_FEATURE_HAS_DFP
+#define PPC_FEATURE_HAS_DFP	0x00000400  /* Decimal Floating Point.  */
+#endif
+#ifndef PPC_FEATURE_HAS_VSX
+#define PPC_FEATURE_HAS_VSX 0x00000080
+#endif
+#ifndef PPC_FEATURE_HAS_ALTIVEC
+#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
+#endif
+#ifndef PPC_FEATURE_HAS_SPE
+#define PPC_FEATURE_HAS_SPE 0x00800000
+#endif
+
+/* Glibc's headers don't define PTRACE_GETVRREGS so we cannot use a
+   configure time check.  Some older glibc's (for instance 2.2.1)
+   don't have a specific powerpc version of ptrace.h, and fall back on
+   a generic one.  In such cases, sys/ptrace.h defines
+   PTRACE_GETFPXREGS and PTRACE_SETFPXREGS to the same numbers that
+   ppc kernel's asm/ptrace.h defines PTRACE_GETVRREGS and
+   PTRACE_SETVRREGS to be.  This also makes a configury check pretty
+   much useless.  */
+
+/* These definitions should really come from the glibc header files,
+   but Glibc doesn't know about the vrregs yet.  */
+#ifndef PTRACE_GETVRREGS
+#define PTRACE_GETVRREGS 18
+#define PTRACE_SETVRREGS 19
+#endif
+
+/* PTRACE requests for POWER7 VSX registers.  */
+#ifndef PTRACE_GETVSXREGS
+#define PTRACE_GETVSXREGS 27
+#define PTRACE_SETVSXREGS 28
+#endif
+
+/* Similarly for the ptrace requests for getting / setting the SPE
+   registers (ev0 -- ev31, acc, and spefscr).  See the description of
+   gdb_evrregset_t for details.  */
+#ifndef PTRACE_GETEVRREGS
+#define PTRACE_GETEVRREGS 20
+#define PTRACE_SETEVRREGS 21
+#endif
+
+#endif