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Annotation of OpenXM_contrib/gmp/mpn/vax/mul_1.s, Revision 1.1.1.1

1.1       maekawa     1: # VAX __mpn_mul_1 -- Multiply a limb vector with a limb and store
                      2: # the result in a second limb vector.
                      3:
                      4: # Copyright (C) 1992, 1994 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 Library General Public License as published by
                     10: # the Free Software Foundation; either version 2 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 Library General Public
                     16: # License for more details.
                     17:
                     18: # You should have received a copy of the GNU Library 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:
                     24: # INPUT PARAMETERS
                     25: # res_ptr      (sp + 4)
                     26: # s1_ptr       (sp + 8)
                     27: # size         (sp + 12)
                     28: # s2_limb      (sp + 16)
                     29:
                     30: .text
                     31:        .align 1
                     32: .globl ___mpn_mul_1
                     33: ___mpn_mul_1:
                     34:        .word   0xfc0
                     35:        movl    12(ap),r4
                     36:        movl    8(ap),r8
                     37:        movl    4(ap),r9
                     38:        movl    16(ap),r6
                     39:        jlss    s2_big
                     40:
                     41: # One might want to combine the addl2 and the store below, but that
                     42: # is actually just slower according to my timing tests.  (VAX 3600)
                     43:
                     44:        clrl    r3
                     45:        incl    r4
                     46:        ashl    $-1,r4,r7
                     47:        jlbc    r4,L1
                     48:        clrl    r11
                     49:
                     50: # Loop for S2_LIMB < 0x80000000
                     51: Loop1: movl    (r8)+,r1
                     52:        jlss    L1n0
                     53:        emul    r1,r6,$0,r2
                     54:        addl2   r11,r2
                     55:        adwc    $0,r3
                     56:        movl    r2,(r9)+
                     57: L1:    movl    (r8)+,r1
                     58:        jlss    L1n1
                     59: L1p1:  emul    r1,r6,$0,r10
                     60:        addl2   r3,r10
                     61:        adwc    $0,r11
                     62:        movl    r10,(r9)+
                     63:
                     64:        jsobgtr r7,Loop1
                     65:        movl    r11,r0
                     66:        ret
                     67:
                     68: L1n0:  emul    r1,r6,$0,r2
                     69:        addl2   r11,r2
                     70:        adwc    r6,r3
                     71:        movl    r2,(r9)+
                     72:        movl    (r8)+,r1
                     73:        jgeq    L1p1
                     74: L1n1:  emul    r1,r6,$0,r10
                     75:        addl2   r3,r10
                     76:        adwc    r6,r11
                     77:        movl    r10,(r9)+
                     78:
                     79:        jsobgtr r7,Loop1
                     80:        movl    r11,r0
                     81:        ret
                     82:
                     83:
                     84: s2_big:        clrl    r3
                     85:        incl    r4
                     86:        ashl    $-1,r4,r7
                     87:        jlbc    r4,L2
                     88:        clrl    r11
                     89:
                     90: # Loop for S2_LIMB >= 0x80000000
                     91: Loop2: movl    (r8)+,r1
                     92:        jlss    L2n0
                     93:        emul    r1,r6,$0,r2
                     94:        addl2   r11,r2
                     95:        adwc    r1,r3
                     96:        movl    r2,(r9)+
                     97: L2:    movl    (r8)+,r1
                     98:        jlss    L2n1
                     99: L2p1:  emul    r1,r6,$0,r10
                    100:        addl2   r3,r10
                    101:        adwc    r1,r11
                    102:        movl    r10,(r9)+
                    103:
                    104:        jsobgtr r7,Loop2
                    105:        movl    r11,r0
                    106:        ret
                    107:
                    108: L2n0:  emul    r1,r6,$0,r2
                    109:        addl2   r1,r3
                    110:        addl2   r11,r2
                    111:        adwc    r6,r3
                    112:        movl    r2,(r9)+
                    113:        movl    (r8)+,r1
                    114:        jgeq    L2p1
                    115: L2n1:  emul    r1,r6,$0,r10
                    116:        addl2   r1,r11
                    117:        addl2   r3,r10
                    118:        adwc    r6,r11
                    119:        movl    r10,(r9)+
                    120:
                    121:        jsobgtr r7,Loop2
                    122:        movl    r11,r0
                    123:        ret