Steve Ellcey's ia64-hpux port.

        * config.gcc (ia64*-*-hpux*): New case.
        * config/ia64/hpux.h: New file for HP-UX support.
        * config/ia64/t-hpux: New file for HP-UX support.

From-SVN: r40531

gcc/ChangeLog

+2001-03-15  Steve Ellcey  <sje@cup.hp.com>
+
+        * config.gcc (ia64*-*-hpux*): New case.
+        * config/ia64/hpux.h: New file for HP-UX support.
+        * config/ia64/t-hpux: New file for HP-UX support.
+
 2001-03-16  Bruce Korb  <bkorb@gnu.org>, Alexandre Oliva  <aoliva@redhat.com>
 
 	* fixinc/inclhack.def (irix_stdio_va_list): New.

gcc/config.gcc

@@ -1583,6 +1583,15 @@ ia64*-*-linux*)
 	fi
 	float_format=i386
 	;;
+ia64*-*-hpux*)
+	tm_file="ia64/ia64.h svr4.h ia64/sysv4.h ia64/hpux.h"
+	tmake_file="ia64/t-ia64 ia64/t-hpux"
+	target_cpu_default="MASK_GNU_AS"
+	if test x$enable_threads = xyes; then
+		thread_file='posix'
+	fi
+	float_format=i386
+	;;
 m32r-*-elf*)
 	extra_parts="crtinit.o crtfini.o"
 	;;

gcc/config/ia64/hpux.h

+/* Definitions of target machine GNU compiler.  IA-64 version.
+   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+   Contributed by Steve Ellcey <sje@cup.hp.com> and
+                  Reva Cuthbertson <reva@cup.hp.com>
+
+This file is part of GNU CC.
+
+GNU CC 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 2, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "\
+  -D__IA64__ -D__ia64 -D__ia64__ -D__hpux -D__hpux__ -Dhpux -Dunix \
+  -D__BIG_ENDIAN__ -D_LONGLONG -D__ELF__ \
+  -Asystem=hpux -Asystem=posix -Asystem=unix -Acpu=ia64 -Amachine=ia64 \
+  -D_UINT128_T"
+
+/* -D__fpreg=long double is needed to compensate for the lack of __fpreg
+   which is a primitive type in HP C but does not exist in GNU C.  Same
+   for __float80 and __float128.  These types appear in HP-UX header
+   files and so must have some definition.  */
+
+#undef CPP_SPEC
+#define CPP_SPEC "\
+  %{mcpu=itanium:-D__itanium__} \
+  -D__LP64__ -D__LONG_MAX__=9223372036854775807L \
+  %{!ansi:%{!std=c*:%{!std=i*: -D_HPUX_SOURCE -D__STDC_EXT__}}} \
+  -D__fpreg=long\\ double \
+  -D__float80=long\\ double \
+  -D__float128=long\\ double"
+
+#undef ASM_SPEC
+#define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic}"
+
+#undef ENDFILE_SPEC
+
+#undef STARTFILE_SPEC
+#ifdef CROSS_COMPILE
+#define STARTFILE_SPEC "%{!shared:crt0%O%s}"
+#else
+#define STARTFILE_SPEC "/usr/ccs/lib/hpux64/crt0%O"
+#endif
+
+#undef LINK_SPEC
+#define LINK_SPEC "\
+  +Accept TypeMismatch \
+  %{shared:-b} \
+  %{!shared: \
+    -u main \
+    %{!static: \
+      %{rdynamic:-export-dynamic}} \
+      %{static:-static}}"
+
+#undef  LIB_SPEC
+#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
+
+#define DONT_USE_BUILTIN_SETJMP
+#define JMP_BUF_SIZE  (8 * 76)
+
+#undef CONST_SECTION_ASM_OP
+#define CONST_SECTION_ASM_OP    "\t.section\t.rodata,\t\"a\",\t\"progbits\""
+
+#undef BITS_BIG_ENDIAN
+#define BITS_BIG_ENDIAN 1
+
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN)
+
+/* We need this macro to output DWARF2 information correctly.  The macro
+   is defined in dwarf2out.c, but it will not do section relative offsets
+   which messes up our ability to debug using gdb.  */
+
+#undef ASM_OUTPUT_DWARF_OFFSET
+#define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL)				\
+ do {									\
+	fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP);		\
+	fprintf ((FILE), "@secrel(");                                   \
+	assemble_name (FILE, LABEL);					\
+	fprintf ((FILE), ")");                                          \
+  } while (0)

gcc/config/ia64/t-hpux

+# HP-UX gets an undefined main when building LIBGCC1_TEST because the
+# linkspec has "-u main" and we want that for linking but it makes
+# LIBGCC1_TEST fail because it uses -nostdlib -nostartup and main is
+# not defined in the test program.
+
+LIBGCC1_TEST =