github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/mpn/m88k/mc88110/mul_1.s (about)

     1  ; mc88110 __gmpn_mul_1 -- Multiply a limb vector with a single limb and
     2  ; store the product in a second limb vector.
     3  
     4  ; Copyright 1992, 1994, 1995, 2000 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 either:
    10  ;
    11  ;    * the GNU Lesser General Public License as published by the Free
    12  ;      Software Foundation; either version 3 of the License, or (at your
    13  ;      option) any later version.
    14  ;
    15  ;  or
    16  ;
    17  ;    * the GNU General Public License as published by the Free Software
    18  ;      Foundation; either version 2 of the License, or (at your option) any
    19  ;      later version.
    20  ;
    21  ;  or both in parallel, as here.
    22  ;
    23  ;  The GNU MP Library is distributed in the hope that it will be useful, but
    24  ;  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    25  ;  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    26  ;  for more details.
    27  ;
    28  ;  You should have received copies of the GNU General Public License and the
    29  ;  GNU Lesser General Public License along with the GNU MP Library.  If not,
    30  ;  see https://www.gnu.org/licenses/.
    31  
    32  
    33  ; INPUT PARAMETERS
    34  ; res_ptr	r2
    35  ; s1_ptr	r3
    36  ; size		r4
    37  ; s2_limb	r5
    38  
    39  	text
    40  	align	16
    41  	global	___gmpn_mul_1
    42  ___gmpn_mul_1:
    43  	; Make S1_PTR and RES_PTR point at the end of their blocks
    44  	; and negate SIZE.
    45  	lda	 r3,r3[r4]
    46  	lda	 r8,r2[r4]		; RES_PTR in r8 since r2 is retval
    47  	subu	 r4,r0,r4
    48  
    49  	addu.co	 r2,r0,r0		; r2 = cy = 0
    50  
    51  	ld	 r6,r3[r4]
    52  	addu	 r4,r4,1
    53  	mulu.d	 r10,r6,r5
    54  	bcnd.n	 eq0,r4,Lend
    55  	 subu	 r8,r8,8
    56  
    57  Loop:	ld	 r6,r3[r4]
    58  	addu.cio r9,r11,r2
    59  	or	 r2,r10,r0		; could be avoided if unrolled
    60  	addu	 r4,r4,1
    61  	mulu.d	 r10,r6,r5
    62  	bcnd.n	 ne0,r4,Loop
    63  	 st	 r9,r8[r4]
    64  
    65  Lend:	addu.cio r9,r11,r2
    66  	st	 r9,r8,4
    67  	jmp.n	 r1
    68  	 addu.ci r2,r10,r0