/* MIPS2 __mpn_rshift -- Copyright (C) 1995-2016 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 . */ #include /* INPUT PARAMETERS res_ptr $4 src_ptr $5 size $6 cnt $7 */ #ifdef __PIC__ .option pic2 #endif ENTRY (__mpn_rshift) .set noreorder #ifdef __PIC__ .cpload t9 #endif .set nomacro lw $10,0($5) /* load first limb */ subu $13,$0,$7 addiu $6,$6,-1 and $9,$6,4-1 /* number of limbs in first loop */ beq $9,$0,L(L0) /* if multiple of 4 limbs, skip first loop*/ sll $2,$10,$13 /* compute function result */ subu $6,$6,$9 L(Loop0): lw $3,4($5) addiu $4,$4,4 addiu $5,$5,4 addiu $9,$9,-1 srl $11,$10,$7 sll $12,$3,$13 move $10,$3 or $8,$11,$12 bne $9,$0,L(Loop0) sw $8,-4($4) L(L0): beq $6,$0,L(Lend) nop L(Loop): lw $3,4($5) addiu $4,$4,16 addiu $6,$6,-4 srl $11,$10,$7 sll $12,$3,$13 lw $10,8($5) srl $14,$3,$7 or $8,$11,$12 sw $8,-16($4) sll $9,$10,$13 lw $3,12($5) srl $11,$10,$7 or $8,$14,$9 sw $8,-12($4) sll $12,$3,$13 lw $10,16($5) srl $14,$3,$7 or $8,$11,$12 sw $8,-8($4) sll $9,$10,$13 addiu $5,$5,16 or $8,$14,$9 bgtz $6,L(Loop) sw $8,-4($4) L(Lend): srl $8,$10,$7 j $31 sw $8,0($4) END (__mpn_rshift)