X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gmp%2Fmpn%2Fsparc32%2Fv8%2Fudiv.asm;fp=gmp%2Fmpn%2Fsparc32%2Fv8%2Fudiv.asm;h=2ce3b8f15c83a546ac071adcc2a5c83a75d16d6e;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gmp/mpn/sparc32/v8/udiv.asm b/gmp/mpn/sparc32/v8/udiv.asm new file mode 100644 index 00000000..2ce3b8f1 --- /dev/null +++ b/gmp/mpn/sparc32/v8/udiv.asm @@ -0,0 +1,120 @@ +dnl SuperSPARC mpn_udiv_qrnnd division support, used from longlong.h. +dnl This is for SuperSPARC only, to compensate for its semi-functional +dnl udiv instruction. + +dnl Copyright 1993, 1994, 1996, 2000 Free Software Foundation, Inc. + +dnl This file is part of the GNU MP Library. + +dnl The GNU MP Library is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU Lesser General Public License as published +dnl by the Free Software Foundation; either version 3 of the License, or (at +dnl your option) any later version. + +dnl The GNU MP Library is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +dnl License for more details. + +dnl You should have received a copy of the GNU Lesser General Public License +dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. + + +include(`../config.m4') + +C INPUT PARAMETERS +C rem_ptr i0 +C n1 i1 +C n0 i2 +C d i3 + +ASM_START() + +ifdef(`PIC', +` TEXT +L(getpc): + retl + nop') + + TEXT + ALIGN(8) +L(C0): .double 0r4294967296 +L(C1): .double 0r2147483648 + +PROLOGUE(mpn_udiv_qrnnd) + save %sp,-104,%sp + st %i1,[%fp-8] + ld [%fp-8],%f10 + +ifdef(`PIC', +`L(pc): call L(getpc) C put address of this insn in %o7 + ldd [%o7+L(C0)-L(pc)],%f8', +` sethi %hi(L(C0)),%o7 + ldd [%o7+%lo(L(C0))],%f8') + + fitod %f10,%f4 + cmp %i1,0 + bge L(248) + mov %i0,%i5 + faddd %f4,%f8,%f4 +L(248): + st %i2,[%fp-8] + ld [%fp-8],%f10 + fmuld %f4,%f8,%f6 + cmp %i2,0 + bge L(249) + fitod %f10,%f2 + faddd %f2,%f8,%f2 +L(249): + st %i3,[%fp-8] + faddd %f6,%f2,%f2 + ld [%fp-8],%f10 + cmp %i3,0 + bge L(250) + fitod %f10,%f4 + faddd %f4,%f8,%f4 +L(250): + fdivd %f2,%f4,%f2 + +ifdef(`PIC', +` ldd [%o7+L(C1)-L(pc)],%f4', +` sethi %hi(L(C1)),%o7 + ldd [%o7+%lo(L(C1))],%f4') + + fcmped %f2,%f4 + nop + fbge,a L(251) + fsubd %f2,%f4,%f2 + fdtoi %f2,%f2 + st %f2,[%fp-8] + b L(252) + ld [%fp-8],%i4 +L(251): + fdtoi %f2,%f2 + st %f2,[%fp-8] + ld [%fp-8],%i4 + sethi %hi(-2147483648),%g2 + xor %i4,%g2,%i4 +L(252): + umul %i3,%i4,%g3 + rd %y,%i0 + subcc %i2,%g3,%o7 + subxcc %i1,%i0,%g0 + be L(253) + cmp %o7,%i3 + + add %i4,-1,%i0 + add %o7,%i3,%o7 + st %o7,[%i5] + ret + restore +L(253): + blu L(246) + mov %i4,%i0 + add %i4,1,%i0 + sub %o7,%i3,%o7 +L(246): + st %o7,[%i5] + ret + restore +EPILOGUE(mpn_udiv_qrnnd)