diff options
Diffstat (limited to 'sysdeps/mips/mips64/add_n.S')
| -rw-r--r-- | sysdeps/mips/mips64/add_n.S | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/sysdeps/mips/mips64/add_n.S b/sysdeps/mips/mips64/add_n.S new file mode 100644 index 0000000000..6b9c93828b --- /dev/null +++ b/sysdeps/mips/mips64/add_n.S @@ -0,0 +1,125 @@ +/* MIPS3 __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> +#include <sys/asm.h> + +/* + * INPUT PARAMETERS + * res_ptr $4 + * s1_ptr $5 + * s2_ptr $6 + * size $7 + */ +#ifdef __PIC__ + .option pic2 +#endif +ENTRY (__mpn_add_n) +#ifdef __PIC__ + SETUP_GP /* ??? unused */ +#endif + .set noreorder + .set nomacro + + ld $10,0($5) + ld $11,0($6) + + daddiu $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 + + dsubu $7,$7,$9 + +L(Loop0): daddiu $9,$9,-1 + ld $12,8($5) + daddu $11,$11,$2 + ld $13,8($6) + sltu $8,$11,$2 + daddu $11,$10,$11 + sltu $2,$11,$10 + sd $11,0($4) + or $2,$2,$8 + + daddiu $5,$5,8 + daddiu $6,$6,8 + move $10,$12 + move $11,$13 + bne $9,$0,L(Loop0) + daddiu $4,$4,8 + +L(L0): beq $7,$0,L(Lend) + nop + +L(Loop): daddiu $7,$7,-4 + + ld $12,8($5) + daddu $11,$11,$2 + ld $13,8($6) + sltu $8,$11,$2 + daddu $11,$10,$11 + sltu $2,$11,$10 + sd $11,0($4) + or $2,$2,$8 + + ld $10,16($5) + daddu $13,$13,$2 + ld $11,16($6) + sltu $8,$13,$2 + daddu $13,$12,$13 + sltu $2,$13,$12 + sd $13,8($4) + or $2,$2,$8 + + ld $12,24($5) + daddu $11,$11,$2 + ld $13,24($6) + sltu $8,$11,$2 + daddu $11,$10,$11 + sltu $2,$11,$10 + sd $11,16($4) + or $2,$2,$8 + + ld $10,32($5) + daddu $13,$13,$2 + ld $11,32($6) + sltu $8,$13,$2 + daddu $13,$12,$13 + sltu $2,$13,$12 + sd $13,24($4) + or $2,$2,$8 + + daddiu $5,$5,32 + daddiu $6,$6,32 + + bne $7,$0,L(Loop) + daddiu $4,$4,32 + +L(Lend): daddu $11,$11,$2 + sltu $8,$11,$2 + daddu $11,$10,$11 + sltu $2,$11,$10 + sd $11,0($4) + j $31 + or $2,$2,$8 + +END (__mpn_add_n) |