git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| a334319f UD |
1 | /* MIPS2 __mpn_add_n -- Add two limb vectors of the same length > 0 and |
| 2 | store sum in a third limb vector. | |
| 3 | ||
| 4 | Copyright (C) 1995, 2000, 2002, 2003 Free Software Foundation, Inc. | |
| 5 | ||
| 6 | This file is part of the GNU MP Library. | |
| 7 | ||
| 8 | The GNU MP Library is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU Lesser General Public License as published by | |
| 10 | the Free Software Foundation; either version 2.1 of the License, or (at your | |
| 11 | option) any later version. | |
| 12 | ||
| 13 | The GNU MP Library is distributed in the hope that it will be useful, but | |
| 14 | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | |
| 16 | License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU Lesser General Public License | |
| 19 | along with the GNU MP Library; see the file COPYING.LIB. If not, write to | |
| 20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
| 21 | MA 02111-1307, USA. */ | |
| 22 | ||
| 23 | #include <sysdep.h> | |
| 24 | ||
| 25 | /* INPUT PARAMETERS | |
| 26 | res_ptr $4 | |
| 27 | s1_ptr $5 | |
| 28 | s2_ptr $6 | |
| 29 | size $7 | |
| 30 | */ | |
| 31 | #ifdef __PIC__ | |
| 32 | .option pic2 | |
| 33 | #endif | |
| 34 | ENTRY (__mpn_add_n) | |
| 35 | .set noreorder | |
| 36 | #ifdef __PIC__ | |
| 37 | .cpload t9 | |
| 38 | #endif | |
| 39 | .set nomacro | |
| 40 | ||
| 41 | lw $10,0($5) | |
| 42 | lw $11,0($6) | |
| 43 | ||
| 44 | addiu $7,$7,-1 | |
| 45 | and $9,$7,4-1 /* number of limbs in first loop */ | |
| 46 | beq $9,$0,L(L0) /* if multiple of 4 limbs, skip first loop */ | |
| 47 | move $2,$0 | |
| 48 | ||
| 49 | subu $7,$7,$9 | |
| 50 | ||
| 51 | L(Loop0): addiu $9,$9,-1 | |
| 52 | lw $12,4($5) | |
| 53 | addu $11,$11,$2 | |
| 54 | lw $13,4($6) | |
| 55 | sltu $8,$11,$2 | |
| 56 | addu $11,$10,$11 | |
| 57 | sltu $2,$11,$10 | |
| 58 | sw $11,0($4) | |
| 59 | or $2,$2,$8 | |
| 60 | ||
| 61 | addiu $5,$5,4 | |
| 62 | addiu $6,$6,4 | |
| 63 | move $10,$12 | |
| 64 | move $11,$13 | |
| 65 | bne $9,$0,L(Loop0) | |
| 66 | addiu $4,$4,4 | |
| 67 | ||
| 68 | L(L0): beq $7,$0,L(end) | |
| 69 | nop | |
| 70 | ||
| 71 | L(Loop): addiu $7,$7,-4 | |
| 72 | ||
| 73 | lw $12,4($5) | |
| 74 | addu $11,$11,$2 | |
| 75 | lw $13,4($6) | |
| 76 | sltu $8,$11,$2 | |
| 77 | addu $11,$10,$11 | |
| 78 | sltu $2,$11,$10 | |
| 79 | sw $11,0($4) | |
| 80 | or $2,$2,$8 | |
| 81 | ||
| 82 | lw $10,8($5) | |
| 83 | addu $13,$13,$2 | |
| 84 | lw $11,8($6) | |
| 85 | sltu $8,$13,$2 | |
| 86 | addu $13,$12,$13 | |
| 87 | sltu $2,$13,$12 | |
| 88 | sw $13,4($4) | |
| 89 | or $2,$2,$8 | |
| 90 | ||
| 91 | lw $12,12($5) | |
| 92 | addu $11,$11,$2 | |
| 93 | lw $13,12($6) | |
| 94 | sltu $8,$11,$2 | |
| 95 | addu $11,$10,$11 | |
| 96 | sltu $2,$11,$10 | |
| 97 | sw $11,8($4) | |
| 98 | or $2,$2,$8 | |
| 99 | ||
| 100 | lw $10,16($5) | |
| 101 | addu $13,$13,$2 | |
| 102 | lw $11,16($6) | |
| 103 | sltu $8,$13,$2 | |
| 104 | addu $13,$12,$13 | |
| 105 | sltu $2,$13,$12 | |
| 106 | sw $13,12($4) | |
| 107 | or $2,$2,$8 | |
| 108 | ||
| 109 | addiu $5,$5,16 | |
| 110 | addiu $6,$6,16 | |
| 111 | ||
| 112 | bne $7,$0,L(Loop) | |
| 113 | addiu $4,$4,16 | |
| 114 | ||
| 115 | L(end): addu $11,$11,$2 | |
| 116 | sltu $8,$11,$2 | |
| 117 | addu $11,$10,$11 | |
| 118 | sltu $2,$11,$10 | |
| 119 | sw $11,0($4) | |
| 120 | j $31 | |
| 121 | or $2,$2,$8 | |
| 122 | .end __mpn_add_n |