Delete Tru64 support

This commit does most of the mechanical removal.  IOW, the easy part.

procfs.c isn't touched beyond removing a couple obvious bits that are
guarded by a couple macros defined in config/alpha/nm-osf3.h.  Going
beyond that for procfs.c & co would be a harder excision that
potentially affects Solaris.

Some comments in the generic alpha code ABIs that may still be
relevant and I wouldn't know what to do with them.  That can always be
done on a separate pass, preferably by someone who can test on alpha.

A couple other spots have references to OSF/Tru64 and related files
being removed, but it felt like removing them would make things worse,
not better.  We can revisit those when we next need to touch that
code.

I didn't remove a reference to osf in testsuite/lib/future.exp, as I
believe that code is imported from DejaGNU.

Built and tested on x86_64 Fedora 20, with --enable-targets=all.

Tested that building for --target=alpha-osf3 on x86_64 Fedora 20
fails with:

 checking for default auto-load directory... $debugdir:$datadir/auto-load
 checking for default auto-load safe-path... $debugdir:$datadir/auto-load
 *** Configuration alpha-unknown-osf3 is obsolete.
 *** Support has been REMOVED.
 make[1]: *** [configure-gdb] Error 1
 make[1]: Leaving directory `build-osf'
 make: *** [all] Error 2

gdb/
2014-10-17  Pedro Alves  <palves@redhat.com>

	* Makefile.in (ALL_64_TARGET_OBS): Remove alpha-osf1-tdep.o.
	(HFILES_NO_SRCDIR): Remove config/alpha/nm-osf3.h.
	(ALLDEPFILES): Remove alpha-nat.c, alpha-osf1-tdep.c and
	solib-osf.c.
	* NEWS: Mention that support for alpha*-*-osf* has been removed.
	* ada-lang.h [__alpha__ && __osf__]
	(ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS): Delete.
	* alpha-nat.c, alpha-osf1-tdep.c: Delete files.
	* alpha-tdep.c (alpha_gdbarch_init): Remove reference to
	GDB_OSABI_OSF1.
	* config/alpha/alpha-osf3.mh, config/alpha/nm-osf3.h: Delete
	files.
	* config/djgpp/fnchange.lst (config/alpha/alpha-osf1.mh)
	(config/alpha/alpha-osf2.mh, config/alpha/alpha-osf3.mh): Delete.
	* configure: Regenerate.
	* configure.ac: Remove references to osf.
	* configure.host: Handle alpha*-*-osf* in the obsolete hosts
	section.  Remove all other references to osf.
	* configure.tgt: Add alpha*-*-osf* to the obsolete targets section.
	Remove all other references to osf.
	* dec-thread.c: Delete file.
	* defs.h (GDB_OSABI_OSF1): Delete.
	* inferior.h (START_INFERIOR_TRAPS_EXPECTED): New unconditionally
	defined.
	* osabi.c (gdb_osabi_names): Delete "OSF/1".
	* procfs.c (procfs_debug_inferior) [PROCFS_DONT_TRACE_FAULTS]:
	Delete code.
	(unconditionally_kill_inferior)
	[PROCFS_NEED_CLEAR_CURSIG_FOR_KILL]: Delete code.
	* solib-osf.c: Delete file.

gdb/testsuite/
2014-10-17  Pedro Alves  <palves@redhat.com>

	* gdb.base/callfuncs.exp: emove references to osf.
	* gdb.base/sigall.exp: Likewise.
	* gdb.gdb/selftest.exp: Likewise.
	* gdb.hp/gdb.base-hp/callfwmall.exp: Likewise.
	* gdb.mi/non-stop.c: Likewise.
	* gdb.mi/pthreads.c: Likewise.
	* gdb.reverse/sigall-precsave.exp: Likewise.
	* gdb.reverse/sigall-reverse.exp: Likewise.
	* gdb.threads/pthreads.c: Likewise.
	* gdb.threads/pthreads.exp: Likewise.

gdb/doc/
2014-10-17  Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (Ada Tasks and Core Files): Delete mention of Tru64.
	(SVR4 Process Information): Delete mention of OSF/1.

3 files changed, 0 insertions, 45 deletions

diff --git a/gdb/config/alpha/alpha-osf3.mh b/gdb/config/alpha/alpha-osf3.mh
deleted file mode 100644
index aa63dc4..0000000
--- a/gdb/config/alpha/alpha-osf3.mh
+++ /dev/null
@@ -1,7 +0,0 @@
-# Host: Little-endian Alpha running OSF/1-3.x and higher using procfs
-NAT_FILE= nm-osf3.h
-NATDEPFILES= alpha-nat.o fork-child.o \
-	solib-osf.o procfs.o proc-api.o proc-events.o proc-flags.o \
-	proc-why.o dec-thread.o
-HAVE_NATIVE_GCORE_HOST = 1
-NAT_CLIBS= -lpthreaddebug
diff --git a/gdb/config/alpha/nm-osf3.h b/gdb/config/alpha/nm-osf3.h
deleted file mode 100644
index a171f5d..0000000
--- a/gdb/config/alpha/nm-osf3.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Native definitions for alpha running OSF/1-3.x and higher, using procfs.
-   Copyright (C) 1995-2014 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/>.  */
-
-/* Number of traps that happen between exec'ing the shell to run an
-   inferior, and when we finally get to the inferior code, not
-   counting the exec for the shell.  This is 1 on most
-   implementations.  */
-#define START_INFERIOR_TRAPS_EXPECTED 2
-
-/* Don't trace faults under OSF/1, rely on the posting of the appropriate
-   signal if fault tracing is disabled.
-   Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable'
-   fault from which we cannot continue (except by disabling the
-   tracing).
-   And as OSF/1 doesn't provide the standard fault definitions, the
-   mapping of faults to appropriate signals in procfs_wait is difficult.  */
-#define PROCFS_DONT_TRACE_FAULTS
-
-/* Work around some peculiarities in the OSF/1 procfs implementation.  */
-#define PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
diff --git a/gdb/config/djgpp/fnchange.lst b/gdb/config/djgpp/fnchange.lst
index cbf11c6..5194850 100644
--- a/gdb/config/djgpp/fnchange.lst
+++ b/gdb/config/djgpp/fnchange.lst
@@ -132,9 +132,6 @@
 @V@/gdb/armnbsd-nat.c @V@/gdb/armnbd-nat.c
 @V@/gdb/armnbsd-tdep.c @V@/gdb/armnbd-tdep.c
 @V@/gdb/c-exp.tab.c @V@/gdb/c-exp_tab.c
-@V@/gdb/config/alpha/alpha-osf1.mh @V@/gdb/config/alpha/alphosf1.mh
-@V@/gdb/config/alpha/alpha-osf2.mh @V@/gdb/config/alpha/alphosf2.mh
-@V@/gdb/config/alpha/alpha-osf3.mh @V@/gdb/config/alpha/alphosf3.mh
 @V@/gdb/config/alpha/tm-alphalinux.h @V@/gdb/config/alpha/tm-alplinux.h
 @V@/gdb/config/i386/nm-cygwin64.h @V@/gdb/config/i386/nm-cyg64.h
 @V@/gdb/config/i386/nm-linux64.h @V@/gdb/config/i386/nm-lx64.h