added assembler stuff for hppa

mpi/hppa/mpih-sub1.S

@@ -0,0 +1,77 @@
+/* hppa   sub_n -- Sub two limb vectors of the same length > 0 and store
+ *		   sum in a third limb vector.
+ *	Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+ *	Copyright (c) 1998 by Werner Koch (dd9jn)
+ *
+ * This file is part of G10.
+ *
+ * G10 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 of the License, or
+ * (at your option) any later version.
+ *
+ * G10 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * Note: This code is heavily based on the GNU MP Library.
+ *	 Actually it's the same code with only minor changes in the
+ *	 way the data is stored; this is to support the abstraction
+ *	 of an optional secure memory allocation which may be used
+ *	 to avoid revealing of sensitive data due to paging etc.
+ *	 The GNU MP Library itself is published under the LGPL;
+ *	 however I decided to publish this code under the plain GPL.
+ */
+
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+
+/*******************
+ *  mpi_limb_t
+ *  mpihelp_sub_n( mpi_ptr_t res_ptr,	(gr26)
+ *		   mpi_ptr_t s1_ptr,	(gr25)
+ *		   mpi_ptr_t s2_ptr,	(gr24)
+ *		   mpi_size_t size)	(gr23)
+ *
+ * One might want to unroll this as for other processors, but it turns
+ * out that the data cache contention after a store makes such
+ * unrolling useless.  We can't come under 5 cycles/limb anyway.
+ */
+
+
+	.code
+	.export 	mpihelp_sub_n
+mpihelp_sub_n
+	.proc
+	.callinfo	frame=0,no_calls
+	.entry
+
+	ldws,ma 	4(0,%r25),%r20
+	ldws,ma 	4(0,%r24),%r19
+
+	addib,= 	-1,%r23,L$end	; check for (SIZE == 1)
+	 sub		%r20,%r19,%r28	; subtract first limbs ignoring cy
+
+L$loop	ldws,ma 	4(0,%r25),%r20
+	ldws,ma 	4(0,%r24),%r19
+	stws,ma 	%r28,4(0,%r26)
+	addib,<>	-1,%r23,L$loop
+	 subb		%r20,%r19,%r28
+
+L$end	stws		%r28,0(0,%r26)
+	addc		%r0,%r0,%r28
+	bv		0(%r2)
+	 subi		1,%r28,%r28
+
+	.exit
+	.procend
+
+
+