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Annotation of OpenXM_contrib/gmp/mpn/sparc32/v8/udiv.asm, Revision 1.1

1.1     ! ohara       1: dnl  SuperSPARC mpn_udiv_qrnnd division support, used from longlong.h.
        !             2: dnl  This is for SuperSPARC only, to compensate for its semi-functional
        !             3: dnl  udiv instruction.
        !             4:
        !             5: dnl  Copyright 1993, 1994, 1996, 2000 Free Software Foundation, Inc.
        !             6:
        !             7: dnl  This file is part of the GNU MP Library.
        !             8:
        !             9: dnl  The GNU MP Library is free software; you can redistribute it and/or modify
        !            10: dnl  it under the terms of the GNU Lesser General Public License as published
        !            11: dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
        !            12: dnl  your option) any later version.
        !            13:
        !            14: dnl  The GNU MP Library is distributed in the hope that it will be useful, but
        !            15: dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            16: dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            17: dnl  License for more details.
        !            18:
        !            19: dnl  You should have received a copy of the GNU Lesser General Public License
        !            20: dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            21: dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            22: dnl  MA 02111-1307, USA.
        !            23:
        !            24:
        !            25: include(`../config.m4')
        !            26:
        !            27: C INPUT PARAMETERS
        !            28: C rem_ptr      i0
        !            29: C n1           i1
        !            30: C n0           i2
        !            31: C d            i3
        !            32:
        !            33: ASM_START()
        !            34:
        !            35: ifdef(`PIC',
        !            36: `      TEXT
        !            37: L(getpc):
        !            38:        retl
        !            39:        nop')
        !            40:
        !            41:        TEXT
        !            42:        ALIGN(8)
        !            43: L(C0): .double 0r4294967296
        !            44: L(C1): .double 0r2147483648
        !            45:
        !            46: PROLOGUE(mpn_udiv_qrnnd)
        !            47:        save    %sp,-104,%sp
        !            48:        st      %i1,[%fp-8]
        !            49:        ld      [%fp-8],%f10
        !            50:
        !            51: ifdef(`PIC',
        !            52: `L(pc):        call    L(getpc)                C put address of this insn in %o7
        !            53:        ldd     [%o7+L(C0)-L(pc)],%f8',
        !            54: `      sethi   %hi(L(C0)),%o7
        !            55:        ldd     [%o7+%lo(L(C0))],%f8')
        !            56:
        !            57:        fitod   %f10,%f4
        !            58:        cmp     %i1,0
        !            59:        bge     L(248)
        !            60:        mov     %i0,%i5
        !            61:        faddd   %f4,%f8,%f4
        !            62: L(248):
        !            63:        st      %i2,[%fp-8]
        !            64:        ld      [%fp-8],%f10
        !            65:        fmuld   %f4,%f8,%f6
        !            66:        cmp     %i2,0
        !            67:        bge     L(249)
        !            68:        fitod   %f10,%f2
        !            69:        faddd   %f2,%f8,%f2
        !            70: L(249):
        !            71:        st      %i3,[%fp-8]
        !            72:        faddd   %f6,%f2,%f2
        !            73:        ld      [%fp-8],%f10
        !            74:        cmp     %i3,0
        !            75:        bge     L(250)
        !            76:        fitod   %f10,%f4
        !            77:        faddd   %f4,%f8,%f4
        !            78: L(250):
        !            79:        fdivd   %f2,%f4,%f2
        !            80:
        !            81: ifdef(`PIC',
        !            82: `      ldd     [%o7+L(C1)-L(pc)],%f4',
        !            83: `      sethi   %hi(L(C1)),%o7
        !            84:        ldd     [%o7+%lo(L(C1))],%f4')
        !            85:
        !            86:        fcmped  %f2,%f4
        !            87:        nop
        !            88:        fbge,a  L(251)
        !            89:        fsubd   %f2,%f4,%f2
        !            90:        fdtoi   %f2,%f2
        !            91:        st      %f2,[%fp-8]
        !            92:        b       L(252)
        !            93:        ld      [%fp-8],%i4
        !            94: L(251):
        !            95:        fdtoi   %f2,%f2
        !            96:        st      %f2,[%fp-8]
        !            97:        ld      [%fp-8],%i4
        !            98:        sethi   %hi(-2147483648),%g2
        !            99:        xor     %i4,%g2,%i4
        !           100: L(252):
        !           101:        umul    %i3,%i4,%g3
        !           102:        rd      %y,%i0
        !           103:        subcc   %i2,%g3,%o7
        !           104:        subxcc  %i1,%i0,%g0
        !           105:        be      L(253)
        !           106:        cmp     %o7,%i3
        !           107:
        !           108:        add     %i4,-1,%i0
        !           109:        add     %o7,%i3,%o7
        !           110:        st      %o7,[%i5]
        !           111:        ret
        !           112:        restore
        !           113: L(253):
        !           114:        blu     L(246)
        !           115:        mov     %i4,%i0
        !           116:        add     %i4,1,%i0
        !           117:        sub     %o7,%i3,%o7
        !           118: L(246):
        !           119:        st      %o7,[%i5]
        !           120:        ret
        !           121:        restore
        !           122: EPILOGUE(mpn_udiv_qrnnd)