| /* MIPS2 __mpn_add_n -- Add two limb vectors of the same length > 0 and |
| store sum in a third limb vector. |
| |
| Copyright (C) 1995-2014 Free Software Foundation, Inc. |
| |
| This file is part of the GNU MP Library. |
| |
| The GNU MP Library 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. |
| |
| The GNU MP Library 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 the GNU MP Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| |
| /* INPUT PARAMETERS |
| res_ptr $4 |
| s1_ptr $5 |
| s2_ptr $6 |
| size $7 |
| */ |
| #ifdef __PIC__ |
| .option pic2 |
| #endif |
| ENTRY (__mpn_add_n) |
| .set noreorder |
| #ifdef __PIC__ |
| .cpload t9 |
| #endif |
| .set nomacro |
| |
| lw $10,0($5) |
| lw $11,0($6) |
| |
| addiu $7,$7,-1 |
| and $9,$7,4-1 /* number of limbs in first loop */ |
| beq $9,$0,L(L0) /* if multiple of 4 limbs, skip first loop */ |
| move $2,$0 |
| |
| subu $7,$7,$9 |
| |
| L(Loop0): addiu $9,$9,-1 |
| lw $12,4($5) |
| addu $11,$11,$2 |
| lw $13,4($6) |
| sltu $8,$11,$2 |
| addu $11,$10,$11 |
| sltu $2,$11,$10 |
| sw $11,0($4) |
| or $2,$2,$8 |
| |
| addiu $5,$5,4 |
| addiu $6,$6,4 |
| move $10,$12 |
| move $11,$13 |
| bne $9,$0,L(Loop0) |
| addiu $4,$4,4 |
| |
| L(L0): beq $7,$0,L(end) |
| nop |
| |
| L(Loop): addiu $7,$7,-4 |
| |
| lw $12,4($5) |
| addu $11,$11,$2 |
| lw $13,4($6) |
| sltu $8,$11,$2 |
| addu $11,$10,$11 |
| sltu $2,$11,$10 |
| sw $11,0($4) |
| or $2,$2,$8 |
| |
| lw $10,8($5) |
| addu $13,$13,$2 |
| lw $11,8($6) |
| sltu $8,$13,$2 |
| addu $13,$12,$13 |
| sltu $2,$13,$12 |
| sw $13,4($4) |
| or $2,$2,$8 |
| |
| lw $12,12($5) |
| addu $11,$11,$2 |
| lw $13,12($6) |
| sltu $8,$11,$2 |
| addu $11,$10,$11 |
| sltu $2,$11,$10 |
| sw $11,8($4) |
| or $2,$2,$8 |
| |
| lw $10,16($5) |
| addu $13,$13,$2 |
| lw $11,16($6) |
| sltu $8,$13,$2 |
| addu $13,$12,$13 |
| sltu $2,$13,$12 |
| sw $13,12($4) |
| or $2,$2,$8 |
| |
| addiu $5,$5,16 |
| addiu $6,$6,16 |
| |
| bne $7,$0,L(Loop) |
| addiu $4,$4,16 |
| |
| L(end): addu $11,$11,$2 |
| sltu $8,$11,$2 |
| addu $11,$10,$11 |
| sltu $2,$11,$10 |
| sw $11,0($4) |
| j $31 |
| or $2,$2,$8 |
| END (__mpn_add_n) |
