Remove ia64.

This includes:
o   All directories named *ia64*
o   All files named *ia64*
o   All ia64-specific code guarded by __ia64__
o   All ia64-specific makefile logic
o   Mention of ia64 in comments and documentation

This excludes:
o   Everything under contrib/
o   Everything under crypto/
o   sys/xen/interface
o   sys/sys/elf_common.h

Discussed at: BSDcan

6 files changed, 1 insertions, 576 deletions

diff --git a/tools/regression/README b/tools/regression/README
index 87e4ab3..a2de372 100644
--- a/tools/regression/README
+++ b/tools/regression/README
@@ -77,7 +77,6 @@ this file.
 
 acct		Exercise the integer to float conversion used in acct(5)
 geom		Some tests and an out-of-kernel simulator for the GEOM code
-ia64		ia64 specific regression tests
 nfsmmap		Some tests to exercise some tricky cases in NFS and mmap
 p1003_1b	Exercise 1003.1B scheduler
 pipe		Pipe code regression test
diff --git a/tools/regression/filemon/Makefile b/tools/regression/filemon/Makefile
index 6ee88f4..3911d33 100644
--- a/tools/regression/filemon/Makefile
+++ b/tools/regression/filemon/Makefile
@@ -1,6 +1,6 @@
 # $FreeBSD$
 
-.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "ia64"
+.if ${MACHINE_ARCH} == "amd64"
 BI_BITS=
 .endif
 
diff --git a/tools/regression/ia64/emulated/brl.t b/tools/regression/ia64/emulated/brl.t
deleted file mode 100644
index c47989c..0000000
--- a/tools/regression/ia64/emulated/brl.t
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/usr/bin/env perl -w
-#
-# Copyright (c) 2006 Marcel Moolenaar
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# $FreeBSD$
-
-my $srcdir = `dirname $0`;
-chomp $srcdir;
-
-my @types = ("Call", "Cond");
-my @preds = ("False", "True");
-my %variant_mapping = (
-	"Call" => "",
-	"Cond" => "Backward Forward"
-);
-
-sub run ($$$$) {
-    local ($nr, $type, $pred, $var) = @_;
-    local $test = "${type}_${pred}_${var}";
-    local $tmpfile = "/tmp/" . $$ . "_$test";
-    local $st;
-
-    $st = system("cc -o $tmpfile -DTYPE=$type -DPRED=$pred -DVAR=$var -Wall -O1 -g $srcdir/test.c");
-    if ($st != 0) {
-        print "not ok $nr $test # compiling $test\n";
-    }
-    else {
-        $st = system($tmpfile);
-        if ($st == 0) {
-            print "ok $nr $test\n";
-        }
-        elsif ($st == 256) {
-            print "not ok $nr $test # invalid combination\n";
-        }
-        elsif ($st == 512) {
-            print "not ok $nr $test # long branch failure\n";
-        }
-        else {
-            print "not ok $nr $test # signalled (exit status $st)\n";
-            return; # Preserve the executable
-        }
-    }
-    unlink $tmpfile;
-}
-
-#
-# We can only test the long brach emulation on the Merced processor.
-# Check for that and skip these tests if it's not...
-#
-$_ = `sysctl -n hw.model`;
-if (! /^Merced$/) {
-    print "1..0 # SKIP This test can only be run on the Merced\n";
-    exit 0;
-}
-
-#
-# Get the total number of tests we're going to perform.
-#
-my $count = 0;
-foreach $type (@types) {
-    my @variants = split(/ /, $variant_mapping{$type});
-    $count += @preds * @variants;
-}
-
-print "1..$count\n";
-
-my $nr=0;
-foreach $type (@types) {
-    my @variants = split(/ /, $variant_mapping{$type});
-    foreach $pred (@preds) {
-	foreach $var (@variants) {
-	    run ++$nr, $type, $pred, $var;
-        }
-    }
-}
-
-exit 0;
diff --git a/tools/regression/ia64/emulated/test.c b/tools/regression/ia64/emulated/test.c
deleted file mode 100644
index 35d4b05..0000000
--- a/tools/regression/ia64/emulated/test.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * Copyright (c) 2006 Marcel Moolenaar
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include <sys/mman.h>
-#include <stdio.h>
-#include <string.h>
-
-/* Supported long branch types */
-#define	Call		1
-#define	Cond		2
-
-/* Supported predicates */
-#define	False		1
-#define	True		2
-
-/* Supported variations */
-#define	Backward	1
-#define	Forward		2
-
-#if TYPE == 0 || PRED == 0 || VAR == 0
-#error Define TYPE, PRED and/or VAR
-#endif
-
-union bundle {
-	unsigned char bytes[16];
-	long double _align;
-};
-
-/*
- * Machine code of a bundle containing a long branch. The predicate of the
- * long branch is the result of the compare in the first slot.
- * The assembly of the bundle is:
- *	{	.mlx
- *		cmp.eq		p0,p15= <PREDICATE>,r0
- *	  (p15)	brl.few		<TARGET> ;;
- *	}
- * the predicate is written to bit 18:1
- * The branch target is written to bits 100:20, 48:39 and 123:1
- */
-unsigned char mc_brl_cond[16] = {
-	0x05, 0x00, 0x00, 0x00, 0x0f, 0x39,
-	0x00, 0x00, 0x00, 0x00, 0x80, 0x07,
-	0x00, 0x00, 0x00, 0xc0 
-};
-
-/*
- * Machine code of the epilogue of a typical function returning an integer.
- * The assembly of the epilogue is:
- *	{	.mib
- *		nop.m		0
- *		addl		r8 = <RETVAL>, r0
- *		br.ret.sptk.few b0 ;;
- *	}
- * The return value is written to bits 59:7, 73:9, 68:5, and 82:1.
- */
-unsigned char mc_epilogue[16] = {
-	0x11, 0x00, 0x00, 0x00, 0x01, 0x00,
-	0x80, 0x00, 0x00, 0x00, 0x48, 0x80,
-	0x00, 0x00, 0x84, 0x00
-};
-
-void
-mc_patch(union bundle *b, unsigned long val, int start, int len)
-{
-	unsigned long mask;
-	int bit, byte, run;
-
-	byte = start >> 3;
-	bit = start & 7;
-	while (len) {
-		run = ((len > (8 - bit)) ? (8 - bit) : len);
-		mask = (1UL << run) - 1UL;
-		b->bytes[byte] |= (val & mask) << bit;
-		val >>= run;
-		len -= run;
-		byte++;
-		bit = 0;
-	}
-}
-
-void
-assemble_brl_cond(union bundle *b, int pred, unsigned long tgt)
-{
-	unsigned long iprel;
-
-	iprel = tgt - (unsigned long)b;
-	memcpy(b->bytes, mc_brl_cond, sizeof(mc_brl_cond));
-	mc_patch(b, pred ? 1 : 0, 18, 1);
-	mc_patch(b, iprel >> 4, 100, 20);
-	mc_patch(b, iprel >> 24, 48, 39);
-	mc_patch(b, iprel >> 63, 123, 1);
-}
-
-void
-assemble_epilogue(union bundle *b, int retval)
-{
-	memcpy(b->bytes, mc_epilogue, sizeof(mc_epilogue));
-	mc_patch(b, retval, 59, 7);
-	mc_patch(b, retval >> 7, 73, 9);
-	mc_patch(b, retval >> 16, 68, 5);
-	mc_patch(b, retval >> 21, 82, 1);
-}
-
-int
-doit(void *addr)
-{
-	asm("mov b6 = %0; br.sptk b6;;" :: "r"(addr));
-	return 1;
-}
-
-int
-test_cond(int pred, union bundle *src, union bundle *dst)
-{
-	assemble_epilogue(dst, pred ? 0 : 2);
-	assemble_brl_cond(src, pred ? 1 : 0, (unsigned long)dst);
-	assemble_epilogue(src + 1, !pred ? 0 : 2);
-	return doit(src);
-}
-
-int
-main()
-{
-	static union bundle blob_low[2];
-	union bundle *blob_high;
-	void *addr;
-
-	addr = (void *)0x7FFFFFFF00000000L;
-	blob_high = mmap(addr, 32, PROT_EXEC | PROT_READ | PROT_WRITE,
-	    MAP_ANON, -1, 0L);
-	if (blob_high != addr)
-		printf("NOTICE: blob_high is at %p, not at %p\n", blob_high,
-		    addr);
-
-#if TYPE == Call
-	return (test_call(blob_high, blob_low));
-#elif TYPE == Cond
-  #if VAR == Forward
-	return (test_cond(PRED - 1, blob_low, blob_high));
-  #elif VAR == Backward
-	return (test_cond(PRED - 1, blob_high, blob_low));
-  #else
-	return (1);
-  #endif
-#else
-	return (1);
-#endif
-}
diff --git a/tools/regression/ia64/unaligned/test.c b/tools/regression/ia64/unaligned/test.c
deleted file mode 100644
index 869c864..0000000
--- a/tools/regression/ia64/unaligned/test.c
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * Copyright (c) 2005 Marcel Moolenaar
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include <machine/float.h>
-#include <string.h>
-
-/* Memory accesses. */
-#define	Load			0x01
-#define	Store			0x02
-
-/* Data type. */
-#define	Integer			0x11
-#define	FloatingPoint		0x12
-
-/* Data size. */
-#define	Small			0x21
-#define	Medium			0x22
-#define	Large			0x23
-
-/* Post increment. */
-#define	NoPostInc		0x31
-#define	MinConstPostInc		0x32
-#define	PlusConstPostInc	0x33
-#define	ScratchRegPostInc	0x34
-#define	PreservedRegPostInc	0x35
-
-#if ACCESS == 0 || TYPE == 0 || SIZE == 0 || POSTINC == 0
-#error define ACCESS, TYPE, SIZE and/or POSTINC
-#endif
-
-#if TYPE == Integer
-#  define	REG		"r8"
-#  if SIZE == Small
-#    define	DATA_TYPE	short
-#    define	DATA_VALUE	0x1234
-#    define	LD		"ld2"
-#    define	ST		"st2"
-#  elif SIZE == Medium
-#    define	DATA_TYPE	int
-#    define	DATA_VALUE	0x12345678
-#    define	LD		"ld4"
-#    define	ST		"st4"
-#  elif SIZE == Large
-#    define	DATA_TYPE	long
-#    define	DATA_VALUE	0x1234567890ABCDEF
-#    define	LD		"ld8"
-#    define	ST		"st8"
-#  endif
-#elif TYPE == FloatingPoint
-#  define	REG		"f6"
-#  if SIZE == Small
-#    define	DATA_TYPE	float
-#    define	DATA_VALUE	FLT_MIN
-#    define	LD		"ldfs"
-#    define	ST		"stfs"
-#  elif SIZE == Medium
-#    define	DATA_TYPE	double
-#    define	DATA_VALUE	DBL_MIN
-#    define	LD		"ldfd"
-#    define	ST		"stfd"
-#  elif SIZE == Large
-#    define	DATA_TYPE	long double
-#    define	DATA_VALUE	LDBL_MIN
-#    define	LD		"ldfe"
-#    define	ST		"stfe"
-#  endif
-#endif
-
-struct {
-	DATA_TYPE aligned;
-	char _;
-	char misaligned[sizeof(DATA_TYPE)];
-} data;
-
-DATA_TYPE *aligned = &data.aligned;
-DATA_TYPE *misaligned = (DATA_TYPE *)data.misaligned;
-DATA_TYPE value = DATA_VALUE;
-
-void
-block_copy(void *dst, void *src, size_t sz)
-{
-
-	memcpy(dst, src, sz);
-}
-
-int
-main()
-{
-
-	/* Set PSR.ac. */
-	asm volatile("sum 8");
-
-#if ACCESS == Load
-	/*
-	 * LOAD
-	 */
-	block_copy(misaligned, &value, sizeof(DATA_TYPE));
-
-#  if POSTINC == NoPostInc
-	/* Misaligned load. */
-	*aligned = *misaligned;
-#  elif POSTINC == MinConstPostInc
-	asm volatile(
-		"ld8 r2=%0;;"
-		LD " " REG "=[r2],%2;;"
-		"st8 %0=r2;" ST " %1=" REG ";;"
-	    : "=m"(misaligned), "=m"(*aligned)
-	    : "i"(-sizeof(DATA_TYPE))
-	    : REG, "r2", "memory");
-#  elif POSTINC == PlusConstPostInc
-	asm volatile(
-		"ld8 r2=%0;;"
-		LD " " REG "=[r2],%2;;"
-		"st8 %0=r2;" ST " %1=" REG ";;"
-	    : "=m"(misaligned), "=m"(*aligned)
-	    : "i"(sizeof(DATA_TYPE))
-	    : REG, "r2", "memory");
-#  elif POSTINC == ScratchRegPostInc
-	asm volatile(
-		"ld8 r2=%0; mov r3=%2;;"
-		LD " " REG "=[r2],r3;;"
-		"st8 %0=r2;" ST " %1=" REG ";;"
-	    : "=m"(misaligned), "=m"(*aligned)
-	    : "i"(sizeof(DATA_TYPE))
-	    : REG, "r2", "r3", "memory");
-#  elif POSTINC == PreservedRegPostInc
-	asm volatile(
-		"ld8 r2=%0; mov r4=%2;;"
-		LD " " REG "=[r2],r4;;"
-		"st8 %0=r2;" ST " %1=" REG ";;"
-	    : "=m"(misaligned), "=m"(*aligned)
-	    : "i"(sizeof(DATA_TYPE))
-	    : REG, "r2", "r4", "memory");
-#  endif
-
-#elif ACCESS == Store
-	/*
-	 * STORE
-	 */
-
-#  if POSTINC == NoPostInc
-	/* Misaligned store. */
-	*misaligned = value;
-#  elif POSTINC == MinConstPostInc
-	asm volatile(
-		"ld8 r2=%0;" LD " " REG "=%1;;"
-		ST " [r2]=" REG ",%2;;"
-		"st8 %0=r2;;"
-	    : "=m"(misaligned)
-	    : "m"(value), "i"(-sizeof(DATA_TYPE))
-	    : REG, "r2", "memory");
-#  elif POSTINC == PlusConstPostInc
-	asm volatile(
-		"ld8 r2=%0;" LD " " REG "=%1;;"
-		ST " [r2]=" REG ",%2;;"
-		"st8 %0=r2;;"
-	    : "=m"(misaligned)
-	    : "m"(value), "i"(sizeof(DATA_TYPE))
-	    : REG, "r2", "memory");
-#  elif POSTINC == ScratchRegPostInc || POSTINC == PreservedRegPostInc
-	return (1);
-#  endif
-
-	block_copy(aligned, data.misaligned, sizeof(DATA_TYPE));
-#endif
-
-	if (*aligned != value)
-		return (2);
-
-#if POSTINC == NoPostInc
-	return (0);
-#elif POSTINC == MinConstPostInc
-	return (((char *)misaligned == data.misaligned - sizeof(DATA_TYPE))
-	    ? 0 : 4);
-#else
-	return (((char *)misaligned == data.misaligned + sizeof(DATA_TYPE))
-	    ? 0 : 4);
-#endif
-}
diff --git a/tools/regression/ia64/unaligned/unaligned.t b/tools/regression/ia64/unaligned/unaligned.t
deleted file mode 100644
index 5d061bd..0000000
--- a/tools/regression/ia64/unaligned/unaligned.t
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/usr/bin/env perl -w
-#
-# Copyright (c) 2005 Marcel Moolenaar
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# $FreeBSD$
-
-my $srcdir = `dirname $0`;
-chomp $srcdir;
-
-my @accesses = ("Load", "Store");
-my @types = ("Integer", "FloatingPoint");
-my @sizes = ("Small", "Medium", "Large");
-my @postincs = ("NoPostInc", "MinConstPostInc", "PlusConstPostInc",
-		"ScratchRegPostInc", "PreservedRegPostInc");
-
-sub run ($$$$$) {
-    local ($nr, $access, $type, $size, $postinc) = @_;
-    local $test = "${access}_${type}_${size}_${postinc}";
-    local $tmpfile = "/tmp/" . $$ . "_$test";
-    local $st;
-
-    $st = system("cc -o $tmpfile -DACCESS=$access -DTYPE=$type -DSIZE=$size -DPOSTINC=$postinc -Wall -O -g $srcdir/test.c");
-    if ($st != 0) {
-	print "not ok $nr $test # compiling $test\n";
-    }
-    else {
-	$st = system($tmpfile);
-	if ($st == 0) {
-	    print "ok $nr $test\n";
-	}
-	elsif ($st == 256) {
-	    print "not ok $nr $test # invalid combination\n";
-	}
-	elsif ($st == 512) {
-	    print "not ok $nr $test # value mismatch\n";
-	}
-	elsif ($st == 1024) {
-	    print "not ok $nr $test # post increment mismatch\n";
-	}
-	else {
-	    print "not ok $nr $test # signalled (exit status $st)\n";
-	    return; # Preserve the executable
-	}
-    }
-    unlink $tmpfile;
-}
-
-system("sysctl debug.unaligned_test=1");
-if (`sysctl -n debug.unaligned_test` != "1") {
-    print "1..0 # SKIP The debug.unaligned_test sysctl could not be set\n";
-    exit 0;
-}
-
-my $count = @accesses * @types * @sizes * @postincs;
-
-# There's no register based post inc. for stores.
-$count -= 12;
-
-print "1..$count\n";
-
-my $nr=0;
-foreach $access (@accesses) {
-    foreach $postinc (@postincs) {
-	$_ = "$access $postinc";
-	if (! /Store.+RegPostInc/) {
-	    foreach $type (@types) {
-		foreach $size (@sizes) {
-		    run ++$nr, $access, $type, $size, $postinc;
-		}
-	    }
-	}
-    }
-}
-
-system("sysctl debug.unaligned_test=0");
-
-exit 0;