diff options
Diffstat (limited to 'mpi/pentium4/sse2/mpih-add1.S')
| -rw-r--r-- | mpi/pentium4/sse2/mpih-add1.S | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/mpi/pentium4/sse2/mpih-add1.S b/mpi/pentium4/sse2/mpih-add1.S deleted file mode 100644 index 55ed6630..00000000 --- a/mpi/pentium4/sse2/mpih-add1.S +++ /dev/null @@ -1,91 +0,0 @@ -/* 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 |