Repatch (from linux) of OSX IRAF

23 files changed, 1674 insertions, 0 deletions

diff --git a/unix/as.linux64/aclrb.c b/unix/as.linux64/aclrb.c
new file mode 100644
index 00000000..8c03c7a1
--- /dev/null
+++ b/unix/as.linux64/aclrb.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRB -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRB (a, n)
+XCHAR	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n);
+}
diff --git a/unix/as.linux64/aclrc.c b/unix/as.linux64/aclrc.c
new file mode 100644
index 00000000..04e0e19b
--- /dev/null
+++ b/unix/as.linux64/aclrc.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRC -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRC (a, n)
+XCHAR	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/aclrd.c b/unix/as.linux64/aclrd.c
new file mode 100644
index 00000000..0cf06b01
--- /dev/null
+++ b/unix/as.linux64/aclrd.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRD -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRD (a, n)
+XDOUBLE	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/aclri.c b/unix/as.linux64/aclri.c
new file mode 100644
index 00000000..7d5b8ada
--- /dev/null
+++ b/unix/as.linux64/aclri.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRI -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRI (a, n)
+XINT	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/aclrl.c b/unix/as.linux64/aclrl.c
new file mode 100644
index 00000000..91f2a0ef
--- /dev/null
+++ b/unix/as.linux64/aclrl.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRL -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRL (a, n)
+XLONG	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/aclrr.c b/unix/as.linux64/aclrr.c
new file mode 100644
index 00000000..0426aa73
--- /dev/null
+++ b/unix/as.linux64/aclrr.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRR -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRR (a, n)
+XREAL	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/aclrs.c b/unix/as.linux64/aclrs.c
new file mode 100644
index 00000000..b4ff02a4
--- /dev/null
+++ b/unix/as.linux64/aclrs.c
@@ -0,0 +1,16 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* ACLRS -- Clear a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+ACLRS (a, n)
+XSHORT	*a;
+XINT	*n;
+{
+	memset ((char *)a, 0, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovc.c b/unix/as.linux64/amovc.c
new file mode 100644
index 00000000..ecba2573
--- /dev/null
+++ b/unix/as.linux64/amovc.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVC -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVC (a, b, n)
+XCHAR	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovd.c b/unix/as.linux64/amovd.c
new file mode 100644
index 00000000..0cfa8906
--- /dev/null
+++ b/unix/as.linux64/amovd.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVD -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVD (a, b, n)
+XDOUBLE	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovi.c b/unix/as.linux64/amovi.c
new file mode 100644
index 00000000..91bc2060
--- /dev/null
+++ b/unix/as.linux64/amovi.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVI -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVI (a, b, n)
+XINT	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovl.c b/unix/as.linux64/amovl.c
new file mode 100644
index 00000000..815fd651
--- /dev/null
+++ b/unix/as.linux64/amovl.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVL -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVL (a, b, n)
+XLONG	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovr.c b/unix/as.linux64/amovr.c
new file mode 100644
index 00000000..94522ea6
--- /dev/null
+++ b/unix/as.linux64/amovr.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVR -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVR (a, b, n)
+XREAL	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/amovs.c b/unix/as.linux64/amovs.c
new file mode 100644
index 00000000..8aa12ae7
--- /dev/null
+++ b/unix/as.linux64/amovs.c
@@ -0,0 +1,17 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define import_spp
+#define import_knames
+#include <iraf.h>
+
+/* AMOVS -- Copy a block of memory.
+ * [Specially optimized for Sun/IRAF].
+ */
+AMOVS (a, b, n)
+XSHORT	*a, *b;
+XINT	*n;
+{
+	if (a != b)
+	    memmove ((char *)b, (char *)a, *n * sizeof(*a));
+}
diff --git a/unix/as.linux64/bytmov.c b/unix/as.linux64/bytmov.c
new file mode 100644
index 00000000..aa43f6d1
--- /dev/null
+++ b/unix/as.linux64/bytmov.c
@@ -0,0 +1,23 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define	import_spp
+#define import_knames
+#include <iraf.h>
+
+/* BYTMOV -- Byte move from array "a" to array "b".  The move must be
+ * nondestructive, allowing a byte array to be shifted left or right a
+ * few bytes, hence comparison of the addresses of the arrays is necessary
+ * to determine if they overlap.
+ * [Specially optimized version for Sun/IRAF].
+ */
+BYTMOV (a, aoff, b, boff, nbytes)
+XCHAR	*a;			/* input byte array			*/
+XINT	*aoff;			/* first byte in A to be moved		*/
+XCHAR	*b;			/* output byte array			*/
+XINT	*boff;			/* first byte in B to be written	*/
+XINT	*nbytes;		/* number of bytes to move		*/
+{
+	if ((a + *aoff) != (b + *boff))
+	    memmove ((char *)b + (*boff-1), (char *)a + (*aoff-1), *nbytes);
+}
diff --git a/unix/as.linux64/ieee.gx b/unix/as.linux64/ieee.gx
new file mode 100644
index 00000000..9039b3d2
--- /dev/null
+++ b/unix/as.linux64/ieee.gx
@@ -0,0 +1,391 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+	     iee[sg]map[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEF).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieesmap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+$if (datatype == r)
+define	IEEE_SWAP	IEEE_SWAP4
+define	BSWAP		bswap4
+define	NSWAP		4
+define	IOFF		1
+$else
+define	IEEE_SWAP	IEEE_SWAP8
+define	BSWAP		bswap8
+define	NSWAP		8
+define	IOFF		1	# MACHDEP (normally 1, 2 on e.g. Intel)
+$endif
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpak$t (native, ieee, nelem)
+
+PIXEL	native[ARB]		#I input native floating format array
+PIXEL	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amov$t (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupk$t (ieee, native, nelem)
+
+PIXEL	ieee[ARB]		#I input IEEE floating format array
+PIXEL	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	expon, i, val
+$if (datatype == r)
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+$else
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+int	iand32()
+$endif
+%	equivalence (ival, val)
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO) {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = native[i]
+$if (datatype == r)
+		    expon = and (ival[IOFF], NaNmask)
+$else
+		    if (SZ_INT == SZ_INT32)
+		        expon = and (ival[IOFF], NaNmask)
+		    else
+		        expon = iand32 (val, NaNmask)
+$endif
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	    }
+	} else {
+	    if (mapin == NO)
+		call amov$t (ieee, native, nelem)
+	    else {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = ieee[i]
+$if (datatype == r)
+		    expon = and (ival[IOFF], NaNmask)
+$else
+		    if (SZ_INT == SZ_INT32)
+		        expon = and (ival[IOFF], NaNmask)
+		    else
+		        expon = iand32 (val, NaNmask)
+$endif
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepak$t (x)
+
+PIXEL	x			#U datum to be converted
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupk$t (x)
+
+PIXEL	x			#U datum to be converted
+
+int	expon, val
+$if (datatype == r)
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+$else
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+int	iand32()
+$endif
+%	equivalence (val, ival)
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+
+	# Check for IEEE exceptional values and map NaN to the native NaN
+	# value, and denormalized numbers (zero exponent) to zero.
+
+	if (mapin != NO) {
+	    fval = x
+$if (datatype == r)
+	    expon = and (ival[IOFF], NaNmask)
+$else
+	    if (SZ_INT == SZ_INT32)
+	        expon = and (ival[IOFF], NaNmask)
+	    else
+	        expon = iand32 (val, NaNmask)
+$endif
+	    if (expon == 0)
+		x = 0
+	    else if (expon == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.
+
+procedure ieesnan$t (x)
+
+PIXEL	x			#I native value which will replace NaN
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnan$t (x)
+
+PIXEL	x			#O native value which will replace NaN
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestat$t (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstat$t ()
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# IEEMAP -- Same as IEESMAP.  Retained for backwards compatibility.
+
+procedure ieemap$t (inval, outval)
+
+int	inval				#I enable mapping on input
+int	outval				#I enable mapping on output
+
+begin
+	call ieesmap$t (inval, outval)
+end
+
+
+# IEEGMAP -- Query the current values of the input and output mapping
+# enables.
+
+procedure ieegmap$t (inval, outval)
+
+int	inval				#O get input mapping enable flag
+int	outval				#O get output mapping enable flag
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	inval = mapin
+	outval = mapout
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEESMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieesmap$t (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+#$if (datatype == r)
+#%	real r_quiet_nan
+#$else
+#%	double precision d_quiet_nan
+#$endif
+
+PIXEL	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenan$t/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+#	if (mapout == YES)
+#	$if (datatype == r)
+#%	    ieeenn = r_quiet_NaN()
+#	$else
+#%	    ieeenn = d_quiet_NaN()
+#	$endif
+
+	if (mapin == YES)
+	$if (datatype == r)
+	    NaNmask = 7F800000X
+	$else
+	    NaNmask = 7FF00000X
+	$endif
+end
diff --git a/unix/as.linux64/ieeed.x b/unix/as.linux64/ieeed.x
new file mode 100644
index 00000000..167b0561
--- /dev/null
+++ b/unix/as.linux64/ieeed.x
@@ -0,0 +1,356 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+	     iee[sg]map[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEFD).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieesmap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+define	IEEE_SWAP	IEEE_SWAP8
+define	BSWAP		bswap8
+define	NSWAP		8
+define	IOFF		1	# MACHDEP (normally 1, 2 on e.g. Intel)
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpakd (native, ieee, nelem)
+
+double	native[ARB]		#I input native floating format array
+double	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amovd (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupkd (ieee, native, nelem)
+
+double	ieee[ARB]		#I input IEEE floating format array
+double	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	expon, i, val
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+int	iand32()
+%	equivalence (ival, val)
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO) {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = native[i]
+		    if (SZ_INT == SZ_INT32)
+		        expon = and (ival[IOFF], NaNmask)
+		    else
+		        expon = iand32 (val, NaNmask)
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	    }
+	} else {
+	    if (mapin == NO)
+		call amovd (ieee, native, nelem)
+	    else {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = ieee[i]
+		    if (SZ_INT == SZ_INT32)
+		        expon = and (ival[IOFF], NaNmask)
+		    else
+		        expon = iand32 (val, NaNmask)
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepakd (x)
+
+double	x			#U datum to be converted
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupkd (x)
+
+double	x			#U datum to be converted
+
+int	expon, val
+double	fval
+int	ival[2]
+%	equivalence (fval, ival)
+int	iand32()
+%	equivalence (val, ival)
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+
+	# Check for IEEE exceptional values and map NaN to the native NaN
+	# value, and denormalized numbers (zero exponent) to zero.
+
+	if (mapin != NO) {
+	    fval = x
+	    if (SZ_INT == SZ_INT32)
+	        expon = and (ival[IOFF], NaNmask)
+	    else
+	        expon = iand32 (val, NaNmask)
+	    if (expon == 0)
+		x = 0
+	    else if (expon == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.
+
+procedure ieesnand (x)
+
+double	x			#I native value which will replace NaN
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnand (x)
+
+double	x			#O native value which will replace NaN
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestatd (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstatd ()
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# IEEMAP -- Same as IEESMAP.  Retained for backwards compatibility.
+
+procedure ieemapd (inval, outval)
+
+int	inval				#I enable mapping on input
+int	outval				#I enable mapping on output
+
+begin
+	call ieesmapd (inval, outval)
+end
+
+
+# IEEGMAP -- Query the current values of the input and output mapping
+# enables.
+
+procedure ieegmapd (inval, outval)
+
+int	inval				#O get input mapping enable flag
+int	outval				#O get output mapping enable flag
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	inval = mapin
+	outval = mapout
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEESMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieesmapd (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+#$if (datatype == r)
+#%	real r_quiet_nan
+#$else
+#%	double precision d_quiet_nan
+#$endif
+
+double	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenand/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+#	if (mapout == YES)
+#	$if (datatype == r)
+#%	    ieeenn = r_quiet_NaN()
+#	$else
+#%	    ieeenn = d_quiet_NaN()
+#	$endif
+
+	if (mapin == YES)
+	    NaNmask = 7FF00000X
+end
diff --git a/unix/as.linux64/ieeer.x b/unix/as.linux64/ieeer.x
new file mode 100644
index 00000000..59ce8566
--- /dev/null
+++ b/unix/as.linux64/ieeer.x
@@ -0,0 +1,345 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+
+.help IEEE
+.nf ------------------------------------------------------------------------
+Low level primitives for IEEE to native floating point datatype conversions.
+See also the MII package, which provides a higher level interface, and the
+IEEE related definitions in <mach.h>.
+
+	         ieepak[rd] (datum)			# scalar conversions
+	         ieeupk[rd] (datum)
+		ieevpak[rd] (native, ieee, nelem)	# vector conversions
+		ieevupk[rd] (ieee, native, nelem)
+	     iee[sg]nan[rd] (NaN)			# NaN handling
+	     iee[sg]map[rd] (mapin, mapout)
+		ieestat[rd] (nin, nout)
+	       ieezstat[rd] ()
+
+The first two routines handle scalar conversions, the second two routines
+vector conversions.  The input and output vectors may be the same.
+Unfortunately, for portability reasons, functions cannot be used, so the
+scalar operators do an in-place conversion instead, and are a no-op on an
+unswapped IEEE system.  The routines iee[sg]nan[rd] set/get the native
+floating value used to replace NaNs or overflows occuring when converting
+IEEE to the native floating format (any floating value will do, e.g., zero or
+INDEFR).  If NaN mapping is enabled, the ieestat[rd] routines may be used to
+determine the number of input or output NaN conversions occuring since the
+last call to ieezstat[rd].
+
+The NaN mapping enable switch and statistics counters are UNDEFINED at
+process startup; programs which use the IEEE conversion package should call
+ieesmap[rd] to enable or disable NaN mapping, and ieezstat[rd] to initialize
+the statistics counters.
+
+The routines in this file are the "portable" versions.  The "portable"
+solution it to merely copy the array, swapping the bytes if necessary - this
+works on any host that uses the IEEE floating format.  NaN mapping is
+implemented in the portable code, but will work properly only for input
+conversions; for output, the IEEE NaN value is undefined in the portable
+version of the code (it is trivial to supply this value in an as$ieee.gx
+version of the code).
+If the local host does
+not use IEEE floating, or if a significant efficiency gain can be realized
+by programming in assembler or C, a host specific version of this file should
+be written, placed in AS, and referenced in the MKPKG special file list.
+.endhelp -------------------------------------------------------------------
+
+
+# Give the generic preprocessor some help.
+define	IEEE_SWAP	IEEE_SWAP4
+define	BSWAP		bswap4
+define	NSWAP		4
+define	IOFF		1
+
+
+# IEEVPAK -- Convert an array in the native floating point format into an
+# array in IEEE floating format.  The input and output arrays can be the same.
+
+procedure ieevpakr (native, ieee, nelem)
+
+real	native[ARB]		#I input native floating format array
+real	ieee[ARB]		#O output IEEE floating format array
+int	nelem			#I number of floating point numbers
+
+int	i
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout == NO) {
+	    if (IEEE_SWAP == YES)
+		call BSWAP (native, 1, ieee, 1, nelem * NSWAP)
+	    else
+		call amovr (native, ieee, nelem)
+	} else {
+	    do i = 1, nelem
+		if (native[i] == native_NaN) {
+		    ieee(i) = ieee_NaN
+		    nout = nout + 1
+		} else
+		    ieee[i] = native[i]
+
+	    # Byteswap if necessary.
+	    if (IEEE_SWAP == YES)
+		call BSWAP (ieee, 1, ieee, 1, nelem * NSWAP)
+	}
+end
+
+
+# IEEVUPK -- Convert an array in IEEE floating format into the native
+# floating point format.  The input and output arrays can be the same.
+
+procedure ieevupkr (ieee, native, nelem)
+
+real	ieee[ARB]		#I input IEEE floating format array
+real	native[ARB]		#O output native floating format array
+int	nelem			#I number of floating point numbers
+
+int	expon, i, val
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+%	equivalence (ival, val)
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES) {
+	    call BSWAP (ieee, 1, native, 1, nelem * NSWAP)
+	    if (mapin != NO) {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = native[i]
+		    expon = and (ival[IOFF], NaNmask)
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    }
+		}
+	    }
+	} else {
+	    if (mapin == NO)
+		call amovr (ieee, native, nelem)
+	    else {
+		# Check for IEEE exceptional values and map NaN to the native
+		# NaN value, and denormalized numbers (zero exponent) to zero.
+
+		do i = 1, nelem {
+		    fval = ieee[i]
+		    expon = and (ival[IOFF], NaNmask)
+		    if (expon == 0) {
+			native[i] = 0
+		    } else if (expon == NaNmask) {
+			native[i] = native_NaN
+			nin = nin + 1
+		    } else
+			native[i] = ieee[i]
+		}
+	    }
+	}
+end
+
+
+# IEEPAK -- Convert a native floating point number into IEEE format.
+
+procedure ieepakr (x)
+
+real	x			#U datum to be converted
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (mapout != NO)
+	    if (x == native_NaN) {
+		x = ieee_NaN
+		nout = nout + 1
+	    }
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+end
+
+
+# IEEUPK -- Convert an IEEE format number into native floating point.
+
+procedure ieeupkr (x)
+
+real	x			#U datum to be converted
+
+int	expon, val
+real	fval
+int	ival[1]
+%	equivalence (fval, ival)
+%	equivalence (val, ival)
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	if (IEEE_SWAP == YES)
+	    call BSWAP (x, 1, x, 1, NSWAP)
+
+	# Check for IEEE exceptional values and map NaN to the native NaN
+	# value, and denormalized numbers (zero exponent) to zero.
+
+	if (mapin != NO) {
+	    fval = x
+	    expon = and (ival[IOFF], NaNmask)
+	    if (expon == 0)
+		x = 0
+	    else if (expon == NaNmask) {
+	        x = native_NaN
+		nin = nin + 1
+	    }
+	}
+end
+
+
+# IEESNAN -- Set the native floating point value used to replace NaNs and
+# overflows when converting IEEE to native.  This must be a legal (finite)
+# native floating point value.
+
+procedure ieesnanr (x)
+
+real	x			#I native value which will replace NaN
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	native_NaN = x
+	nin = 0
+	nout = 0
+end
+
+
+# IEEGNAN -- Get the NaN value.
+
+procedure ieegnanr (x)
+
+real	x			#O native value which will replace NaN
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	x = native_NaN
+end
+
+
+# IEESTAT -- Return statistics on the number of NaNs encountered in input
+# conversions (unpack) and output conversions (pack).
+
+procedure ieestatr (o_nin, o_nout)
+
+int	o_nin				#O number of NaN seen on input
+int	o_nout				#O number of NaN values output
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	o_nin = nin
+	o_nout = nout
+end
+
+
+# IEEZSTAT -- Zero the statistics counters.
+
+procedure ieezstatr ()
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	nin = 0
+	nout = 0
+end
+
+
+# IEEMAP -- Same as IEESMAP.  Retained for backwards compatibility.
+
+procedure ieemapr (inval, outval)
+
+int	inval				#I enable mapping on input
+int	outval				#I enable mapping on output
+
+begin
+	call ieesmapr (inval, outval)
+end
+
+
+# IEEGMAP -- Query the current values of the input and output mapping
+# enables.
+
+procedure ieegmapr (inval, outval)
+
+int	inval				#O get input mapping enable flag
+int	outval				#O get output mapping enable flag
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	inval = mapin
+	outval = mapout
+end
+
+
+# MACHINE DEPENDENT PART.
+# ---------------------------
+
+# IEESMAP -- Enable or disable NaN mapping.
+#
+# sEEE EEEE Emmm mmmm mmmm mmmm mmmm mmmm
+#  3           2            1           0
+# 1098 7654 3210 9876 5432 1098 7654 3210
+#    7    f    8    0    0    0    0    0
+
+procedure ieesmapr (inval, outval)
+
+int	inval				#I enable NaN mapping for input?
+int	outval				#I enable NaN mapping for output?
+
+# MACHDEP.
+#$if (datatype == r)
+#%	real r_quiet_nan
+#$else
+#%	double precision d_quiet_nan
+#$endif
+
+real	native_NaN, ieee_NaN
+int	mapin, mapout, nin, nout, NaNmask
+common	/ieenanr/ native_NaN, ieee_NaN, NaNmask, mapin, mapout, nin, nout
+
+begin
+	mapin = inval
+	mapout = outval
+
+	# MACHDEP.
+#	if (mapout == YES)
+#	$if (datatype == r)
+#%	    ieeenn = r_quiet_NaN()
+#	$else
+#%	    ieeenn = d_quiet_NaN()
+#	$endif
+
+	if (mapin == YES)
+	    NaNmask = 7F800000X
+end
diff --git a/unix/as.linux64/zrtadr.s b/unix/as.linux64/zrtadr.s
new file mode 100644
index 00000000..22523154
--- /dev/null
+++ b/unix/as.linux64/zrtadr.s
@@ -0,0 +1,6 @@
+	.seg	"text"
+	.global	zrtadr_
+zrtadr_:
+	mov	%i7,%o0
+	retl
+	nop
diff --git a/unix/as.linux64/zsvjmp.s b/unix/as.linux64/zsvjmp.s
new file mode 100644
index 00000000..7a952958
--- /dev/null
+++ b/unix/as.linux64/zsvjmp.s
@@ -0,0 +1,48 @@
+	.file	"zsvjmp.s"
+
+# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+# the registers, effecting a call in the context of the procedure which
+# originally called ZSVJMP, but with the new status code.  These are Fortran
+# callable procedures.
+#
+#		zsvjmp (jmp_buf, status)	# (returns status)
+#		zdojmp (jmp_buf, status)	# (passes status to zsvjmp)
+#
+# These routines are directly comparable to the UNIX setjmp/longjmp, except
+# that they are Fortran callable kernel routines, i.e., trailing underscore,
+# call by reference, and no function returns.  ZSVJMP requires an assembler
+# jacket routine to avoid modifying the call stack, but relies upon setjmp
+# to do the real work.  ZDOJMP is implemented as a portable C routine in OS,
+# calling longjmp to do the restore.  In these routines, JMP_BUF consists
+# of one longword containing the address of the STATUS variable, followed
+# by the "jmp_buf" used by setjmp/longjmp.
+#
+# This file contains the FreeBSD (x86) version of ZSVJMP.
+# Modified to remove leading underscore for ELF (Jan99).
+ 
+        #.globl	_zsvjmp_
+        .globl	zsvjmp_
+
+	# The following has nothing to do with ZSVJMP, and is included here
+	# only because this assembler module is loaded with every process.
+	# This code sets the value of the symbol MEM (the VOS or Fortran Mem
+	# common) to zero, setting the origin for IRAF pointers to zero
+	# rather than some arbitrary value, and ensuring that the MEM common
+	# is aligned for all datatypes as well as page aligned.  A further
+	# advantage is that references to NULL pointers are likely to cause a
+	# memory violation.
+
+	#.globl	mem_
+	#mem_	=	0
+	.globl	_mem_
+	_mem_	=	0
+
+zsvjmp_:
+	# %rsi ... &status  %rdi ... &jumpbuf
+	movq    %rsi, (%rdi)    # store &status in jmpbuf[0]
+	movl    $0, (%rsi)      # zero the value of status
+	addq    $8, %rdi        # change point to &jmpbuf[1]
+	movl    $0, %esi        # change arg2 to zero
+	jmp     __sigsetjmp     # let sigsetjmp do the rest
+
diff --git a/unix/as.linux64/zsvjmp.s.BAD b/unix/as.linux64/zsvjmp.s.BAD
new file mode 100644
index 00000000..74107830
--- /dev/null
+++ b/unix/as.linux64/zsvjmp.s.BAD
@@ -0,0 +1,60 @@
+	.file	"zsvjmp.s"
+
+# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+# the registers, effecting a call in the context of the procedure which
+# originally called ZSVJMP, but with the new status code.  These are Fortran
+# callable procedures.
+#
+#		zsvjmp (jmp_buf, status)	# (returns status)
+#		zdojmp (jmp_buf, status)	# (passes status to zsvjmp)
+#
+# These routines are directly comparable to the UNIX setjmp/longjmp, except
+# that they are Fortran callable kernel routines, i.e., trailing underscore,
+# call by reference, and no function returns.  ZSVJMP requires an assembler
+# jacket routine to avoid modifying the call stack, but relies upon setjmp
+# to do the real work.  ZDOJMP is implemented as a portable C routine in OS,
+# calling longjmp to do the restore.  In these routines, JMP_BUF consists
+# of one longword containing the address of the STATUS variable, followed
+# by the "jmp_buf" used by setjmp/longjmp.
+#
+# This file contains the FreeBSD (x86) version of ZSVJMP.
+# Modified to remove leading underscore for ELF (Jan99).
+ 
+        .globl	_zsvjmp_
+
+	# The following has nothing to do with ZSVJMP, and is included here
+	# only because this assembler module is loaded with every process.
+	# This code sets the value of the symbol MEM (the VOS or Fortran Mem
+	# common) to zero, setting the origin for IRAF pointers to zero
+	# rather than some arbitrary value, and ensuring that the MEM common
+	# is aligned for all datatypes as well as page aligned.  A further
+	# advantage is that references to NULL pointers are likely to cause a
+	# memory violation.
+
+	.globl	mem_
+	mem_	=	0
+	.globl	_mem_
+	_mem_	=	0
+
+_zsvjmp_:
+	pushl	%ebp
+	movl	%esp, %ebp
+	subl	$24, %esp
+	movl	12(%ebp), %eax
+	movl	$0, (%eax)
+	movl	12(%ebp), %eax
+	movl	(%eax), %edx
+	movl	8(%ebp), %eax
+	movl	%edx, (%eax)
+	movl	8(%ebp), %eax
+	addl	$4, %eax
+	movl	%eax, (%esp)
+	call	L_setjmp$stub
+	leave
+	ret
+	.section __IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5
+L_setjmp$stub:
+	.indirect_symbol _setjmp
+	hlt ; hlt ; hlt ; hlt ; hlt
+	.subsections_via_symbols
diff --git a/unix/as.linux64/zsvjmp_c b/unix/as.linux64/zsvjmp_c
new file mode 100644
index 00000000..2b42a0de
--- /dev/null
+++ b/unix/as.linux64/zsvjmp_c
@@ -0,0 +1,170 @@
+/*
+# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+# the registers, effecting a call in the context of the procedure which
+# originally called ZSVJMP, but with the new status code.  These are Fortran
+# callable procedusres.
+#
+#		zsvjmp (jmp_buf, status)	# (returns status)
+#		zdojmp (jmp_buf, status)	# (passes status to zsvjmp)
+#
+# These routines are directly comparable to the UNIX setjmp/longjmp, except
+# that they are Fortran callable kernel routines, i.e., trailing underscore,
+# call by reference, and no function returns.  ZSVJMP requires an assembler
+# jacket routine to avoid modifying the call stack, but relies upon setjmp
+# to do the real work.  ZDOJMP is implemented as a portable C routine in OS,
+# calling longjmp to do the restore.  In these routines, JMP_BUF consists
+# of one longword containing the address of the STATUS variable, followed
+# by the "jmp_buf" used by setjmp/longjmp.
+*/
+
+
+#ifdef I386
+
+/*
+asm("# Set the address of the MEM common to zero.");
+asm(".globl	mem_");
+asm("	mem_	=	0");
+*/
+
+/*
+#if defined(MACOSX)
+asm(".globl	_mem_");
+asm("	_mem_	=	0");
+#endif
+*/
+
+#if defined(LINUX)
+asm(".text");
+asm(".globl	zsvjmp_");
+asm("zsvjmp_:");
+asm("	movl	4(%esp), %ecx	# &jmpbuf to ECX");
+asm("	movl	8(%esp), %eax	# &status to EAX");
+asm("	movl	%eax, (%ecx)	# store &status in jmpbuf[0]");
+asm("	movl 	$0, (%eax)	# zero the value of status");
+asm("	addl	$4, %ecx	# change stack to point to &jmpbuf[1]");
+asm("	movl	%ecx, 4(%esp)	# 	...");
+asm("	movl	$0, 8(%esp)	# change arg2 to zero");
+asm("	jmp	__sigsetjmp	# let sigsetjmp do the rest");
+#endif	/* LINUX */
+
+#if (defined(CYGWIN) || defined(MACOSX))
+asm(".text");
+asm(".globl	_zsvjmp_");
+asm("_zsvjmp_:");
+asm("	movl	4(%esp), %ecx	# &jmpbuf to ECX");
+asm("	movl	8(%esp), %eax	# &status to EAX");
+asm("	movl	%eax, (%ecx)	# store &status in jmpbuf[0]");
+asm("	movl 	$0, (%eax)	# zero the value of status");
+asm("	addl	$4, %ecx	# change stack to point to &jmpbuf[1]");
+asm("	movl	%ecx, 4(%esp)	# 	...");
+asm("	movl	$0, 8(%esp)	# change arg2 to zero");
+asm("	jmp	_setjmp		# let setjmp do the rest");
+#endif	/* CYGWIN || MACOSX */
+
+#endif	/* I386 */
+
+
+#ifdef X86_64
+
+/*
+asm("# Set the address of the MEM common to zero.");
+asm(".globl	mem_");
+asm("	mem_	=	0");
+*/
+
+#ifdef SPP_LP64
+/* LP64-SPP */
+asm(".text");
+asm(".globl	zsvjmp_");
+asm("zsvjmp_:");
+asm("	# %rsi ... &status  %rdi ... &jumpbuf");
+asm("	movq	%rsi, (%rdi)	# store &status in jmpbuf[0]");
+asm("	movl	$0, (%rsi)	# zero the value of status");
+asm("	addq	$8, %rdi	# change point to &jmpbuf[1]");
+asm("	movl	$0, %esi	# change arg2 to zero");
+asm("	jmp	__sigsetjmp	# let sigsetjmp do the rest");
+#else
+/* ILP64-SPP */
+asm(".text");
+asm(".globl	zsvjmp_");
+asm("zsvjmp_:");
+asm("	# %rsi ... &status  %rdi ... &jumpbuf");
+asm("	movq	%rsi, (%rdi)	# store &status in jmpbuf[0]");
+asm("	movq	$0, (%rsi)	# zero the value of status");
+asm("	addq	$8, %rdi	# change point to &jmpbuf[1]");
+asm("	movl	$0, %esi	# change arg2 to zero");
+asm("	jmp	__sigsetjmp	# let sigsetjmp do the rest");
+#endif
+
+#endif	/* X86_64 */
+
+
+#ifdef POWERPC
+
+#if defined(LINUX)
+/*
+asm("	# Set the address of the MEM common to zero.");
+asm("	.globl   mem_");
+asm("	mem_ = 0");
+*/
+asm(".text");
+asm("	# ZSVJMP -- SPP callable SETJMP.");
+asm("	.align	 2");
+asm("	.globl	zsvjmp_");
+asm("	.type	zsvjmp_,@function");
+asm("zsvjmp_:");
+asm("	# R3 = buf, R4 = &status");
+asm("	li	r11,0		# r11 = 0");
+asm("	stw	r11,0(r4)	# set *status to zero");
+asm("	stw	r4,0(r3)	# store &status in buf[0]");
+asm("	addi	r3,r3,4		# reference buf[1] for sigsetjmp");
+asm("	li	r4,0		# zero signal mask for sigsetjmp");
+asm("	b	__sigsetjmp");
+#endif	/* LINUX */
+
+#if defined(MACOSX)
+/*
+asm("	# Set the address of the MEM common to zero.");
+asm("	.globl   _mem_");
+asm("	_mem_ = 0");
+*/
+asm(".text");
+asm("	# ZSVJMP -- SPP callable SETJMP.");
+asm("	.align	2");
+asm("	.globl	_zsvjmp_");
+asm("_zsvjmp_:");
+asm("	# R3 = buf, R4 = &status");
+asm("	li	r11,0		# r11 = 0");
+asm("	stw	r11,0(r4)	# set *status to zero");
+asm("	stw	r4,0(r3)	# store &status in buf[0]");
+asm("	addi	r3,r3,4		# reference buf[1] for setjmp");
+asm("	b	L_setjmp$stub");
+asm("L2:");
+asm("	lwz	r1,0(r1)");
+asm("	lwz	r0,8(r1)");
+asm("	mtlr	r0");
+asm("	lmw	r30,-8(r1)");
+asm("	blr");
+asm("");
+asm("	# The setjmp code is only available in a dynamic library on 10.1.");
+asm(".picsymbol_stub");
+asm("L_setjmp$stub:");
+asm("        .indirect_symbol _setjmp");
+asm("        mflr	r0");
+asm("        bcl	20,31,L1$pb");
+asm("L1$pb:");
+asm("        mflr	r11");
+asm("        addis	r11,r11,ha16(L1$lz-L1$pb)");
+asm("        mtlr	r0");
+asm("        lwz	r12,lo16(L1$lz-L1$pb)(r11)");
+asm("        mtctr	r12");
+asm("        addi	r11,r11,lo16(L1$lz-L1$pb)");
+asm("        bctr");
+asm(".lazy_symbol_pointer");
+asm("L1$lz:");
+asm("        .indirect_symbol _setjmp");
+asm("        .long dyld_stub_binding_helper");
+#endif	/* MACOSX */
+
+#endif	/* POWERPC */
diff --git a/unix/as.linux64/zsvjmp_demo.c b/unix/as.linux64/zsvjmp_demo.c
new file mode 100644
index 00000000..3dd2d90e
--- /dev/null
+++ b/unix/as.linux64/zsvjmp_demo.c
@@ -0,0 +1,13 @@
+/* Compile with gcc -S to get demo assembler code.
+ */
+#include <setjmp.h>
+
+#define import_spp
+#include <iraf.h>
+
+int zsvjmp_( XPOINTER *buf, XINT *status )
+{
+	*status = 0;
+	((XINT **)buf)[0] = status;
+	return sigsetjmp ((void *)((XINT **)buf+1),0);
+}
diff --git a/unix/as.linux64/zzdebug.c b/unix/as.linux64/zzdebug.c
new file mode 100644
index 00000000..81247e78
--- /dev/null
+++ b/unix/as.linux64/zzdebug.c
@@ -0,0 +1,48 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <stdio.h>
+#define import_spp
+#define	import_kernel
+#define	import_knames
+#include <iraf.h>
+
+/*
+ * ZZDEBUG -- Test program for ZSVJMP/ZDOJMP.  Will return "exit status 1"
+ * if it runs successfully.
+ */
+
+
+int	jmpbuf[LEN_JUMPBUF];
+int	status;
+
+main()
+{
+	zsvjmp_((char *)jmpbuf, &status);
+	if (status) {
+	    printf ("exit status %d\n", status);
+	    exit (status);
+	}
+
+	a(1);
+	exit (0);
+}
+
+
+a(status)
+int	status;
+{
+	ZDOJMP(jmpbuf, &status);
+}
+
+
+/* ZDOJMP -- Restore the saved processor context (non-local goto).  See also
+ * as$zsvjmp.s, where most of the work is done.
+ */
+ZDOJMP (jmpbuf, status)
+XINT	*jmpbuf;
+XINT	*status;
+{
+	*((int *)jmpbuf[0]) = *status;
+	longjmp (&jmpbuf[1], *status);
+}