125 lines
2.4 KiB
ArmAsm
125 lines
2.4 KiB
ArmAsm
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/* mips3 add_n -- Add two limb vectors of the same length > 0 and store
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* sum in a third limb vector.
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*
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* Copyright (C) 1995, 1998, 2000
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* 2001, 2002 Free Software Foundation, Inc.
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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/*******************
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* mpi_limb_t
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* _gcry_mpih_add_n( mpi_ptr_t res_ptr, ($4)
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* mpi_ptr_t s1_ptr, ($5)
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* mpi_ptr_t s2_ptr, ($6)
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* mpi_size_t size) ($7)
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*/
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.text
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.align 2
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.globl _gcry_mpih_add_n
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.ent _gcry_mpih_add_n
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_gcry_mpih_add_n:
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.set noreorder
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.set nomacro
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ld $10,0($5)
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ld $11,0($6)
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daddiu $7,$7,-1
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and $9,$7,4-1 # number of limbs in first loop
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beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
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move $2,$0
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dsubu $7,$7,$9
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.Loop0: daddiu $9,$9,-1
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ld $12,8($5)
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daddu $11,$11,$2
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ld $13,8($6)
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sltu $8,$11,$2
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daddu $11,$10,$11
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sltu $2,$11,$10
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sd $11,0($4)
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or $2,$2,$8
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daddiu $5,$5,8
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daddiu $6,$6,8
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move $10,$12
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move $11,$13
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bne $9,$0,.Loop0
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daddiu $4,$4,8
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.L0: beq $7,$0,.Lend
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nop
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.Loop: daddiu $7,$7,-4
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ld $12,8($5)
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daddu $11,$11,$2
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ld $13,8($6)
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sltu $8,$11,$2
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daddu $11,$10,$11
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sltu $2,$11,$10
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sd $11,0($4)
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or $2,$2,$8
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ld $10,16($5)
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daddu $13,$13,$2
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ld $11,16($6)
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sltu $8,$13,$2
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daddu $13,$12,$13
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sltu $2,$13,$12
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sd $13,8($4)
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or $2,$2,$8
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ld $12,24($5)
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daddu $11,$11,$2
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ld $13,24($6)
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sltu $8,$11,$2
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daddu $11,$10,$11
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sltu $2,$11,$10
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sd $11,16($4)
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or $2,$2,$8
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ld $10,32($5)
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daddu $13,$13,$2
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ld $11,32($6)
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sltu $8,$13,$2
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daddu $13,$12,$13
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sltu $2,$13,$12
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sd $13,24($4)
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or $2,$2,$8
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daddiu $5,$5,32
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daddiu $6,$6,32
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bne $7,$0,.Loop
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daddiu $4,$4,32
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.Lend: daddu $11,$11,$2
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sltu $8,$11,$2
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daddu $11,$10,$11
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sltu $2,$11,$10
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sd $11,0($4)
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j $31
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or $2,$2,$8
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.end _gcry_mpih_add_n
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