These are special i386 files for use on OpenBSD, which (at least until

version 3.1) has an older assembler that won't work with the files in
i386.

1 files changed, 118 insertions, 0 deletions

diff --git a/mpi/i386-openbsd/mpih-add1.S b/mpi/i386-openbsd/mpih-add1.S
new file mode 100644
index 000000000..3b3b23c8c
--- /dev/null
+++ b/mpi/i386-openbsd/mpih-add1.S
@@ -0,0 +1,118 @@
+/* i80386 add_n -- Add two limb vectors of the same length > 0 and store
+ *		   sum in a third limb vector.
+ *
+ *      Copyright (C) 1992, 1994, 1995, 1998, 
+ *                    2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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.
+ *
+ * GnuPG 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_add_n( mpi_ptr_t res_ptr,	(sp + 4)
+ *		   mpi_ptr_t s1_ptr,	(sp + 8)
+ *		   mpi_ptr_t s2_ptr,	(sp + 12)
+ *		   mpi_size_t size)	(sp + 16)
+ */
+
+.text
+	ALIGN (3)
+	.globl C_SYMBOL_NAME(mpihelp_add_n)
+C_SYMBOL_NAME(mpihelp_add_n:)
+	pushl %edi
+	pushl %esi
+
+	movl 12(%esp),%edi		/* res_ptr */
+	movl 16(%esp),%esi		/* s1_ptr */
+	movl 20(%esp),%edx		/* s2_ptr */
+	movl 24(%esp),%ecx		/* size */
+
+	movl	%ecx,%eax
+	shrl	$3,%ecx 		/* compute count for unrolled loop */
+	negl	%eax
+	andl	$7,%eax 		/* get index where to start loop */
+	jz	Loop			/* necessary special case for 0 */
+	incl	%ecx			/* adjust loop count */
+	shll	$2,%eax 		/* adjustment for pointers... */
+	subl	%eax,%edi		/* ... since they are offset ... */
+	subl	%eax,%esi		/* ... by a constant when we ... */
+	subl	%eax,%edx		/* ... enter the loop */
+	shrl	$2,%eax 		/* restore previous value */
+#ifdef PIC
+/* Calculate start address in loop for PIC.  Due to limitations in some
+   assemblers, Loop-L0-3 cannot be put into the leal */
+	call	L0
+L0:	leal	(%eax,%eax,8),%eax
+	addl	(%esp),%eax
+	addl	$(Loop-L0-3),%eax
+	addl	$4,%esp
+#else
+/* Calculate start address in loop for non-PIC.  */
+	leal	(Loop - 3)(%eax,%eax,8),%eax
+#endif
+	jmp	*%eax			/* jump into loop */
+	ALIGN (3)
+Loop:	movl	(%esi),%eax
+	adcl	(%edx),%eax
+	movl	%eax,(%edi)
+	movl	4(%esi),%eax
+	adcl	4(%edx),%eax
+	movl	%eax,4(%edi)
+	movl	8(%esi),%eax
+	adcl	8(%edx),%eax
+	movl	%eax,8(%edi)
+	movl	12(%esi),%eax
+	adcl	12(%edx),%eax
+	movl	%eax,12(%edi)
+	movl	16(%esi),%eax
+	adcl	16(%edx),%eax
+	movl	%eax,16(%edi)
+	movl	20(%esi),%eax
+	adcl	20(%edx),%eax
+	movl	%eax,20(%edi)
+	movl	24(%esi),%eax
+	adcl	24(%edx),%eax
+	movl	%eax,24(%edi)
+	movl	28(%esi),%eax
+	adcl	28(%edx),%eax
+	movl	%eax,28(%edi)
+	leal	32(%edi),%edi
+	leal	32(%esi),%esi
+	leal	32(%edx),%edx
+	decl	%ecx
+	jnz	Loop
+
+	sbbl	%eax,%eax
+	negl	%eax
+
+	popl %esi
+	popl %edi
+	ret
+