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Annotation of OpenXM_contrib/gmp/mpn/a29k/submul_1.s, Revision 1.1

1.1     ! maekawa     1: ; 29000 __mpn_submul_1 -- Multiply a limb vector with a single limb and
        !             2: ; subtract the product from 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      lr2
        !            26: ; s1_ptr       lr3
        !            27: ; size         lr4
        !            28: ; s2_limb      lr5
        !            29:
        !            30:        .cputype 29050
        !            31:        .sect .lit,lit
        !            32:        .text
        !            33:        .align  4
        !            34:        .global ___mpn_submul_1
        !            35:        .word   0x60000
        !            36: ___mpn_submul_1:
        !            37:        sub     lr4,lr4,8
        !            38:        jmpt    lr4,Ltail
        !            39:         const  gr120,0                 ; init cylimb reg
        !            40:
        !            41:        srl     gr117,lr4,3             ; divide by 8
        !            42:        sub     gr117,gr117,1           ; count for jmpfdec
        !            43:
        !            44: Loop:  mtsrim  cr,(8-1)
        !            45:        loadm   0,0,gr96,lr3
        !            46:        add     lr3,lr3,32
        !            47:
        !            48:        multiplu gr104,gr96,lr5
        !            49:        multmu   gr96,gr96,lr5
        !            50:        multiplu gr105,gr97,lr5
        !            51:        multmu   gr97,gr97,lr5
        !            52:        multiplu gr106,gr98,lr5
        !            53:        multmu   gr98,gr98,lr5
        !            54:        multiplu gr107,gr99,lr5
        !            55:        multmu   gr99,gr99,lr5
        !            56:        multiplu gr108,gr100,lr5
        !            57:        multmu   gr100,gr100,lr5
        !            58:        multiplu gr109,gr101,lr5
        !            59:        multmu   gr101,gr101,lr5
        !            60:        multiplu gr110,gr102,lr5
        !            61:        multmu   gr102,gr102,lr5
        !            62:        multiplu gr111,gr103,lr5
        !            63:        multmu   gr103,gr103,lr5
        !            64:
        !            65:        add     gr104,gr104,gr120
        !            66:        addc    gr105,gr105,gr96
        !            67:        addc    gr106,gr106,gr97
        !            68:        addc    gr107,gr107,gr98
        !            69:        addc    gr108,gr108,gr99
        !            70:        addc    gr109,gr109,gr100
        !            71:        addc    gr110,gr110,gr101
        !            72:        addc    gr111,gr111,gr102
        !            73:        addc    gr120,gr103,0
        !            74:
        !            75:        mtsrim  cr,(8-1)
        !            76:        loadm   0,0,gr96,lr2
        !            77:
        !            78:        sub     gr96,gr96,gr104
        !            79:        subc    gr97,gr97,gr105
        !            80:        subc    gr98,gr98,gr106
        !            81:        subc    gr99,gr99,gr107
        !            82:        subc    gr100,gr100,gr108
        !            83:        subc    gr101,gr101,gr109
        !            84:        subc    gr102,gr102,gr110
        !            85:        subc    gr103,gr103,gr111
        !            86:
        !            87:        add     gr104,gr103,gr111       ; invert carry from previus sub
        !            88:        addc    gr120,gr120,0
        !            89:
        !            90:        mtsrim  cr,(8-1)
        !            91:        storem  0,0,gr96,lr2
        !            92:        jmpfdec gr117,Loop
        !            93:         add    lr2,lr2,32
        !            94:
        !            95: Ltail: and     lr4,lr4,(8-1)
        !            96:        sub     gr118,lr4,1             ; count for CR
        !            97:        jmpt    gr118,Lend
        !            98:         sub    lr4,lr4,2
        !            99:        sub     lr2,lr2,4               ; offset res_ptr by one limb
        !           100:
        !           101: Loop2: load    0,0,gr116,lr3
        !           102:        add     lr3,lr3,4
        !           103:        multiplu gr117,gr116,lr5
        !           104:        multmu  gr118,gr116,lr5
        !           105:        add     lr2,lr2,4
        !           106:        load    0,0,gr119,lr2
        !           107:        add     gr117,gr117,gr120
        !           108:        addc    gr118,gr118,0
        !           109:        sub     gr119,gr119,gr117
        !           110:        add     gr104,gr119,gr117       ; invert carry from previus sub
        !           111:        store   0,0,gr119,lr2
        !           112:        jmpfdec lr4,Loop2
        !           113:         addc   gr120,gr118,0
        !           114:
        !           115: Lend:  jmpi    lr0
        !           116:         or     gr96,gr120,0            ; copy