diff options
Diffstat (limited to 'grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-mul2.S')
| -rw-r--r-- | grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-mul2.S | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-mul2.S b/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-mul2.S new file mode 100644 index 0000000..f975adf --- /dev/null +++ b/grub-core/lib/libgcrypt/mpi/pentium4/sse2/mpih-mul2.S @@ -0,0 +1,136 @@ +/* Intel Pentium-4 mpn_addmul_1 -- Multiply a limb vector with a limb and add + * the result to a second limb vector. + * + * Copyright 2001, 2002, 2004, 2005 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_addmul_1( mpi_ptr_t res_ptr, (sp + 4) + * mpi_ptr_t s1_ptr, (sp + 8) + * mpi_size_t s1_size, (sp + 12) + * mpi_limb_t s2_limb) (sp + 16) + * + * P3 model 9 (Banias) ?.? + * P3 model 13 (Dothan) 5.8 + * P4 model 0 (Willamette) 5.5 + * P4 model 1 (?) 5.5 + * P4 model 2 (Northwood) 5.5 + * P4 model 3 (Prescott) 6.0 + * P4 model 4 (Nocona) + * + * Only the carry limb propagation is on the dependent chain, but some other + * Pentium4 pipeline magic brings down performance to 6 cycles/l from the + * ideal 4 cycles/l. + */ + + + TEXT + ALIGN (4) + GLOBL C_SYMBOL_NAME(_gcry_mpih_addmul_1) +C_SYMBOL_NAME(_gcry_mpih_addmul_1:) + + pxor %mm4, %mm4 +.Lstart_1c: + movl 8(%esp), %eax + movl 12(%esp), %ecx + movl 4(%esp), %edx + movd 16(%esp), %mm7 + +/* + C eax src, incrementing ; 5B + C ecx loop counter, decrementing + C edx dst, incrementing + C + C mm4 carry, low 32-bits + C mm7 multiplier +*/ + + movd (%eax), %mm2 + pmuludq %mm7, %mm2 + + shrl $1, %ecx + jnc .Leven + + leal 4(%eax), %eax + movd (%edx), %mm1 + paddq %mm2, %mm1 + paddq %mm1, %mm4 + movd %mm4, (%edx) + psrlq $32, %mm4 + + testl %ecx, %ecx + jz .Lrtn + leal 4(%edx), %edx + + movd (%eax), %mm2 + pmuludq %mm7, %mm2 +.Leven: + movd 4(%eax), %mm0 + movd (%edx), %mm1 + pmuludq %mm7, %mm0 + + subl $1, %ecx + jz .Lend +.Lloop: + paddq %mm2, %mm1 + movd 8(%eax), %mm2 + paddq %mm1, %mm4 + movd 4(%edx), %mm3 + pmuludq %mm7, %mm2 + movd %mm4, (%edx) + psrlq $32, %mm4 + + paddq %mm0, %mm3 + movd 12(%eax), %mm0 + paddq %mm3, %mm4 + movd 8(%edx), %mm1 + pmuludq %mm7, %mm0 + movd %mm4, 4(%edx) + psrlq $32, %mm4 + + leal 8(%eax), %eax + leal 8(%edx), %edx + subl $1, %ecx + jnz .Lloop +.Lend: + paddq %mm2, %mm1 + paddq %mm1, %mm4 + movd 4(%edx), %mm3 + movd %mm4, (%edx) + psrlq $32, %mm4 + paddq %mm0, %mm3 + paddq %mm3, %mm4 + movd %mm4, 4(%edx) + psrlq $32, %mm4 +.Lrtn: + movd %mm4, %eax + emms + ret |