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 *** Configuration mips-sgi-irix6 is obsolete.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, 7 insertions, 41 deletions

diff --git a/gdb/testsuite/gdb.base/nodebug.exp b/gdb/testsuite/gdb.base/nodebug.exp
index cb704bb..a1dee0b 100644
--- a/gdb/testsuite/gdb.base/nodebug.exp
+++ b/gdb/testsuite/gdb.base/nodebug.exp
@@ -58,29 +58,17 @@ if [runto inner] then {
     # On alpha (and other ecoff systems) the native compilers put
     # out debugging info for non-aggregate return values of functions
     # even without -g, which should be accepted.
-    # Irix5, even though it is ELF, counts as "ecoff" because it
-    # encapsulates ecoff debugging info in a .mdebug section.
-    # Irix6 gcc emits no debug info at all for static functions and
-    # variables, so all tests involving statics fail.
-    
-    if {![test_compiler_info "gcc-*"]} then { setup_xfail "mips-sgi-irix5*" "mips-sgi-irix6*" }
+
     gdb_test "p top" \
 	"\{(<(text variable|function), no debug info>|short \\(int\\)|short \\(\\))\} \[0-9a-fx]* <\\.?top(\\(int\\)|)>"
-    if {![test_compiler_info "gcc-*"]} then { setup_xfail "mips-sgi-irix5*" "mips-sgi-irix6*" }
     gdb_test "whatis top" \
 	"(<(text variable|function), no debug info>|short \\(int\\)|short \\(\\))"
-    if {![test_compiler_info "gcc-*"]} then { setup_xfail "mips-sgi-irix6*" }
     gdb_test "ptype top" "(short|int) \\((|void|int|<non-float parameter>|<non-float parameter>, <non-float parameter>)\\)"
     
-    if {![test_compiler_info "gcc-*"]} then { setup_xfail "mips-sgi-irix5*" }
-    setup_xfail "mips-sgi-irix6*"
     gdb_test "p middle" \
 	"\{(<(text variable|function), no debug info>|short \\(int\\)|short \\(\\))\} \[0-9a-fx]* <\\.?middle(\\(int\\)|)>"
-    if {![test_compiler_info "gcc-*"]} then { setup_xfail "mips-sgi-irix5*" }
-    setup_xfail "mips-sgi-irix6*"
     gdb_test "whatis middle" \
 	"(<(text variable|function), no debug info>|short \\(int\\)|short \\(\\))"
-    setup_xfail "mips-sgi-irix6*"
     gdb_test "ptype middle" "(short|int) \\((|void|int|<non-float parameter>|<non-float parameter>, <non-float parameter>)\\)"
     
     gdb_test "p dataglobal" "= 3"
@@ -93,9 +81,7 @@ if [runto inner] then {
     # doesn't know the variables exist at all.
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
 
@@ -103,9 +89,7 @@ if [runto inner] then {
 
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
 
@@ -113,9 +97,7 @@ if [runto inner] then {
 
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
 
@@ -126,9 +108,7 @@ if [runto inner] then {
     
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
 
@@ -136,9 +116,7 @@ if [runto inner] then {
 
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
 
@@ -146,17 +124,11 @@ if [runto inner] then {
 
     setup_xfail "rs6000*-*-aix*"
     setup_xfail "powerpc*-*-aix*"
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    } else {
+    if ![test_compiler_info "gcc-*"] {
         setup_xfail "hppa*-*-hpux*"
     }
     gdb_test "ptype bsslocal" "<(data variable|variable), no debug info>"
     
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*" 
-    }
-
     gdb_test "backtrace 10" "#0.*inner.*#1.*middle.*#2.*top.*#3.*main.*" \
 	"backtrace from inner in nodebug.exp"
     # Or if that doesn't work, at least hope for the external symbols
@@ -167,9 +139,6 @@ if [runto inner] then {
     
     # This test is not as obscure as it might look.  `p getenv ("TERM")'
     # is a real-world example, at least on many systems.
-    if { ! [test_compiler_info "gcc-*"]} {
-        setup_xfail "mips-sgi-irix6*" 
-    }
     if [target_info exists gdb,cannot_call_functions] {
 	setup_xfail "*-*-*" 2416
 	fail "p/c array_index(\"abcdef\",2)"
@@ -204,9 +173,6 @@ if [runto inner] then {
     
     # Now, try that we can give names of file-local symbols which happen
     # to be unique, and have it still work
-    if [test_compiler_info "gcc-*"] {
-        setup_xfail "mips-sgi-irix6*"
-    }
     if [runto middle] then {
 	gdb_test "backtrace 10" "#0.*middle.*#1.*top.*#2.*main.*" \
 	    "backtrace from middle in nodebug.exp"