1 files changed, 91 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-add1.S b/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-add1.S
new file mode 100644
index 0000000..55ed663
--- /dev/null
+++ b/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-add1.S
@@ -0,0 +1,91 @@
+/* Intel Pentium-4 mpn_add_n -- mpn addition.
+ *
+ * Copyright 2001, 2002 Free Software Foundation, Inc.
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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.
+ */
+
+
+#include "sysdep.h"
+#include "asm-syntax.h"
+
+
+	/*******************
+ *  mpi_limb_t
+ *  _gcry_mpih_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)
+ *
+ * P4 Willamette, Northwood: 4.0 cycles/limb if dst!=src1 and dst!=src2
+ *			    6.0 cycles/limb if dst==src1 or dst==src2
+ * P4 Prescott:		    >= 5 cycles/limb
+ *
+ * The 4 c/l achieved here isn't particularly good, but is better than 9 c/l
+ * for a basic adc loop.
+ */
+
+	TEXT
+	ALIGN (3)
+	GLOBL C_SYMBOL_NAME(_gcry_mpih_add_n)
+C_SYMBOL_NAME(_gcry_mpih_add_n:)
+
+	pxor	%mm0, %mm0
+	
+	movl	8(%esp), %eax		/* s1_ptr */
+	movl	%ebx, 8(%esp)		/* re-use parameter space */
+	movl	12(%esp), %ebx		/* res_ptr */
+	movl	4(%esp), %edx		/* s2_ptr */
+	movl	16(%esp), %ecx		/* size */
+
+	leal	(%eax,%ecx,4), %eax	/* src1 end */
+	leal	(%ebx,%ecx,4), %ebx	/* src2 end */
+	leal	(%edx,%ecx,4), %edx	/* dst end */
+	negl	%ecx			/* -size */
+
+Ltop:
+/*
+	C eax	src1 end
+	C ebx	src2 end
+	C ecx	counter, limbs, negative
+	C edx	dst end
+	C mm0	carry bit
+*/
+
+	movd	(%eax,%ecx,4), %mm1
+	movd	(%ebx,%ecx,4), %mm2
+	paddq	%mm2, %mm1
+
+	paddq	%mm1, %mm0
+	movd	%mm0, (%edx,%ecx,4)
+
+	psrlq	$32, %mm0
+
+	addl	$1, %ecx
+	jnz	Ltop
+
+
+	movd	%mm0, %eax
+	movl	8(%esp), %ebx	/* restore saved EBX */
+	emms
+	ret