Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / sparc32 / submul_1.asm

diff --git a/rts/gmp/mpn/sparc32/submul_1.asm b/rts/gmp/mpn/sparc32/submul_1.asm
new file mode 100644 (file)
index 0000000..12abd84
--- /dev/null
+++ b/rts/gmp/mpn/sparc32/submul_1.asm
@@ -0,0 +1,146 @@
+dnl  SPARC mpn_submul_1 -- Multiply a limb vector with a limb and subtract
+dnl  the result from a second limb vector.
+
+dnl  Copyright (C) 1992, 1993, 1994, 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 2.1 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; see the file COPYING.LIB.  If not, write to
+dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+dnl  MA 02111-1307, USA.
+
+
+include(`../config.m4')
+
+C INPUT PARAMETERS
+C res_ptr      o0
+C s1_ptr       o1
+C size         o2
+C s2_limb      o3
+
+ASM_START()
+PROLOGUE(mpn_submul_1)
+       C Make S1_PTR and RES_PTR point at the end of their blocks
+       C and put (- 4 x SIZE) in index/loop counter.
+       sll     %o2,2,%o2
+       add     %o0,%o2,%o4     C RES_PTR in o4 since o0 is retval
+       add     %o1,%o2,%o1
+       sub     %g0,%o2,%o2
+
+       cmp     %o3,0xfff
+       bgu     L(large)
+       nop
+
+       ld      [%o1+%o2],%o5
+       mov     0,%o0
+       b       L(0)
+        add    %o4,-4,%o4
+L(loop0):
+       subcc   %o5,%g1,%g1
+       ld      [%o1+%o2],%o5
+       addx    %o0,%g0,%o0
+       st      %g1,[%o4+%o2]
+L(0):  wr      %g0,%o3,%y
+       sra     %o5,31,%g2
+       and     %o3,%g2,%g2
+       andcc   %g1,0,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,%o5,%g1
+       mulscc  %g1,0,%g1
+       sra     %g1,20,%g4
+       sll     %g1,12,%g1
+       rd      %y,%g3
+       srl     %g3,20,%g3
+       or      %g1,%g3,%g1
+
+       addcc   %g1,%o0,%g1
+       addx    %g2,%g4,%o0     C add sign-compensation and cy to hi limb
+       addcc   %o2,4,%o2       C loop counter
+       bne     L(loop0)
+        ld     [%o4+%o2],%o5
+
+       subcc   %o5,%g1,%g1
+       addx    %o0,%g0,%o0
+       retl
+       st      %g1,[%o4+%o2]
+
+L(large):
+       ld      [%o1+%o2],%o5
+       mov     0,%o0
+       sra     %o3,31,%g4      C g4 = mask of ones iff S2_LIMB < 0
+       b       L(1)
+        add    %o4,-4,%o4
+L(loop):
+       subcc   %o5,%g3,%g3
+       ld      [%o1+%o2],%o5
+       addx    %o0,%g0,%o0
+       st      %g3,[%o4+%o2]
+L(1):  wr      %g0,%o5,%y
+       and     %o5,%g4,%g2
+       andcc   %g0,%g0,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%o3,%g1
+       mulscc  %g1,%g0,%g1
+       rd      %y,%g3
+       addcc   %g3,%o0,%g3
+       addx    %g2,%g1,%o0
+       addcc   %o2,4,%o2
+       bne     L(loop)
+        ld     [%o4+%o2],%o5
+
+       subcc   %o5,%g3,%g3
+       addx    %o0,%g0,%o0
+       retl
+       st      %g3,[%o4+%o2]
+EPILOGUE(mpn_submul_1)