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+ # Alpha __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
+ # store difference 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/>.
+
+
+ # INPUT PARAMETERS
+ # res_ptr $16
+ # s1_ptr $17
+ # s2_ptr $18
+ # size $19
+
+ .set noreorder
+ .set noat
+.text
+ .align 3
+ .globl __mpn_sub_n
+ .ent __mpn_sub_n
+__mpn_sub_n:
+ .frame $30,0,$26,0
+
+ ldq $3,0($17)
+ ldq $4,0($18)
+
+ subq $19,1,$19
+ and $19,4-1,$2 # number of limbs in first loop
+ bis $31,$31,$0
+ beq $2,.L0 # if multiple of 4 limbs, skip first loop
+
+ subq $19,$2,$19
+
+.Loop0: subq $2,1,$2
+ ldq $5,8($17)
+ addq $4,$0,$4
+ ldq $6,8($18)
+ cmpult $4,$0,$1
+ subq $3,$4,$4
+ cmpult $3,$4,$0
+ stq $4,0($16)
+ or $0,$1,$0
+
+ addq $17,8,$17
+ addq $18,8,$18
+ bis $5,$5,$3
+ bis $6,$6,$4
+ addq $16,8,$16
+ bne $2,.Loop0
+
+.L0: beq $19,.Lend
+
+ .align 3
+.Loop: subq $19,4,$19
+
+ ldq $5,8($17)
+ addq $4,$0,$4
+ ldq $6,8($18)
+ cmpult $4,$0,$1
+ subq $3,$4,$4
+ cmpult $3,$4,$0
+ stq $4,0($16)
+ or $0,$1,$0
+
+ ldq $3,16($17)
+ addq $6,$0,$6
+ ldq $4,16($18)
+ cmpult $6,$0,$1
+ subq $5,$6,$6
+ cmpult $5,$6,$0
+ stq $6,8($16)
+ or $0,$1,$0
+
+ ldq $5,24($17)
+ addq $4,$0,$4
+ ldq $6,24($18)
+ cmpult $4,$0,$1
+ subq $3,$4,$4
+ cmpult $3,$4,$0
+ stq $4,16($16)
+ or $0,$1,$0
+
+ ldq $3,32($17)
+ addq $6,$0,$6
+ ldq $4,32($18)
+ cmpult $6,$0,$1
+ subq $5,$6,$6
+ cmpult $5,$6,$0
+ stq $6,24($16)
+ or $0,$1,$0
+
+ addq $17,32,$17
+ addq $18,32,$18
+ addq $16,32,$16
+ bne $19,.Loop
+
+.Lend: addq $4,$0,$4
+ cmpult $4,$0,$1
+ subq $3,$4,$4
+ cmpult $3,$4,$0
+ stq $4,0($16)
+ or $0,$1,$0
+ ret $31,($26),1
+
+ .end __mpn_sub_n