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Diffstat (limited to 'libotr/libgcrypt-1.8.7/mpi/mips3/mpih-mul1.S')
-rw-r--r-- | libotr/libgcrypt-1.8.7/mpi/mips3/mpih-mul1.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/libotr/libgcrypt-1.8.7/mpi/mips3/mpih-mul1.S b/libotr/libgcrypt-1.8.7/mpi/mips3/mpih-mul1.S new file mode 100644 index 0000000..6c0099d --- /dev/null +++ b/libotr/libgcrypt-1.8.7/mpi/mips3/mpih-mul1.S @@ -0,0 +1,89 @@ +/* mips3 mpih-mul1.S -- Multiply a limb vector with a limb and store + * the result in a second limb vector. + * + * Copyright (C) 1992, 1994, 1995, 1998, 2000 + * 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 + */ + + +/******************* + * mpi_limb_t + * _gcry_mpih_mul_1( mpi_ptr_t res_ptr, (r4) + * mpi_ptr_t s1_ptr, (r5) + * mpi_size_t s1_size, (r6) + * mpi_limb_t s2_limb) (r7) + */ + + .text + .align 4 + .globl _gcry_mpih_mul_1 + .ent _gcry_mpih_mul_1 +_gcry_mpih_mul_1: + .set noreorder + .set nomacro + +/* # warm up phase 0 */ + ld $8,0($5) + +/* # warm up phase 1 */ + daddiu $5,$5,8 + dmultu $8,$7 + + daddiu $6,$6,-1 + beq $6,$0,$LC0 + move $2,$0 # zero cy2 + + daddiu $6,$6,-1 + beq $6,$0,$LC1 + ld $8,0($5) # load new s1 limb as early as possible + +Loop: mflo $10 + mfhi $9 + daddiu $5,$5,8 + daddu $10,$10,$2 # add old carry limb to low product limb + dmultu $8,$7 + ld $8,0($5) # load new s1 limb as early as possible + daddiu $6,$6,-1 # decrement loop counter + sltu $2,$10,$2 # carry from previous addition -> $2 + sd $10,0($4) + daddiu $4,$4,8 + bne $6,$0,Loop + daddu $2,$9,$2 # add high product limb and carry from addition + +/* # cool down phase 1 */ +$LC1: mflo $10 + mfhi $9 + daddu $10,$10,$2 + sltu $2,$10,$2 + dmultu $8,$7 + sd $10,0($4) + daddiu $4,$4,8 + daddu $2,$9,$2 # add high product limb and carry from addition + +/* # cool down phase 0 */ +$LC0: mflo $10 + mfhi $9 + daddu $10,$10,$2 + sltu $2,$10,$2 + sd $10,0($4) + j $31 + daddu $2,$9,$2 # add high product limb and carry from addition + + .end _gcry_mpih_mul_1 + |