Delete IRIX support

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

This doesn't touch procfs.c as that'd be a harder excision,
potentially affecting Solaris.

mips-tdep.c is left alone.  E.g., I didn't delete the GDB_OSABI_IRIX
enum value, nor references to it in mips-tdep.c.  Some comments
mentioning IRIX ABIs may still be relevant and I wouldn't know what to
do with them. in That can always be done on a separate pass,
preferably by someone who can test on MIPS.

I didn't remove a reference to IRIX 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=mips-sgi-irix6 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 *** Configuration mips-sgi-irix6 is obsolete.
 *** Support has been REMOVED.
 make[1]: *** [configure-gdb] Error 1
 make[1]: Leaving directory `/home/pedro/gdb/mygit/build-irix'
 make: *** [all] Error 2

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

	* Makefile.in (ALL_TARGET_OBS): Remove mips-irix-tdep.o and solib-irix.o.
	(ALLDEPFILES): Remove mips-irix-tdep.c and solib-irix.c.
	(HFILES_NO_SRCDIR): Remove solib-irix.h.
	* NEWS: Mention that support for mips-sgi-irix5* mips-sgi-irix6*
	and been removed.
	* config/mips/irix5.mh, config/mips/irix6.mh: Delete files.
	* configure.ac: Remove references to IRIX.
	* configure.host: Add *-*-irix* to the obsolete hosts section.
	Remove all other references to irix.
	* irix5-nat.c, mips-irix-tdep.c, solib-irix.c, solib-irix.h:
	Delete files.

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

	* gdb.base/bigcore.exp: Remove references to IRIX.
	* gdb.base/funcargs.exp: Likewise.
	* gdb.base/interrupt.exp: Likewise.
	* gdb.base/mips_pro.exp: Likewise.
	* gdb.base/nodebug.exp: Likewise.
	* gdb.base/setvar.exp: Likewise.
	* lib/gdb.exp (gdb_compile_shlib): Remove mips-sgi-irix* case.

1 files changed, 4 insertions, 5 deletions

diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 1ffa62a..fc27ba6 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -644,7 +644,7 @@ ALL_TARGET_OBS = \
 	m88k-tdep.o \
 	mep-tdep.o \
 	microblaze-tdep.o microblaze-linux-tdep.o \
-	mips-irix-tdep.o mips-linux-tdep.o \
+	mips-linux-tdep.o \
 	mipsnbsd-tdep.o mips-tdep.o \
 	mn10300-linux-tdep.o mn10300-tdep.o \
 	moxie-tdep.o \
@@ -673,7 +673,7 @@ ALL_TARGET_OBS = \
 	bsd-uthread.o \
 	nbsd-tdep.o obsd-tdep.o \
 	sol2-tdep.o \
-	solib-frv.o solib-irix.o solib-svr4.o \
+	solib-frv.o solib-svr4.o \
 	solib-som.o solib-pa64.o solib-darwin.o solib-dsbt.o \
 	dbug-rom.o dink32-rom.o ppcbug-rom.o m32r-rom.o dsrec.o monitor.o \
 	remote-m32r-sdi.o remote-mips.o \
@@ -903,7 +903,7 @@ interps.h auxv.h gdbcmd.h tramp-frame.h mipsnbsd-tdep.h	\
 amd64-linux-tdep.h linespec.h i387-tdep.h mn10300-tdep.h \
 sparc64-tdep.h monitor.h ppcobsd-tdep.h srec.h solib-pa64.h \
 coff-pe-read.h parser-defs.h gdb_ptrace.h mips-linux-tdep.h \
-m68k-tdep.h spu-tdep.h jv-lang.h environ.h solib-irix.h amd64-tdep.h \
+m68k-tdep.h spu-tdep.h jv-lang.h environ.h amd64-tdep.h \
 doublest.h regset.h hppa-tdep.h ppc-linux-tdep.h ppc64-tdep.h \
 rs6000-tdep.h rs6000-aix-tdep.h \
 common/gdb_locale.h arch-utils.h trad-frame.h gnu-nat.h \
@@ -1661,7 +1661,6 @@ ALLDEPFILES = \
 	microblaze-tdep.c microblaze-linux-tdep.c \
 	mingw-hdep.c \
 	mips-linux-nat.c mips-linux-tdep.c \
-	mips-irix-tdep.c \
 	mips-tdep.c \
 	mipsnbsd-nat.c mipsnbsd-tdep.c \
 	mips64obsd-nat.c mips64obsd-tdep.c \
@@ -1689,7 +1688,7 @@ ALLDEPFILES = \
 	ser-go32.c ser-pipe.c ser-tcp.c ser-mingw.c \
 	sh-tdep.c sh64-tdep.c shnbsd-tdep.c shnbsd-nat.c \
 	sol2-tdep.c \
-	solib-irix.c solib-svr4.c \
+	solib-svr4.c \
 	sparc-linux-nat.c sparc-linux-tdep.c \
 	sparc-sol2-nat.c sparc-sol2-tdep.c sparc64-sol2-tdep.c \
 	sparc-nat.c sparc-tdep.c sparc64-linux-nat.c sparc64-linux-tdep.c \