Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / sparc32 / v8 / submul_1.asm

diff --git a/rts/gmp/mpn/sparc32/v8/submul_1.asm b/rts/gmp/mpn/sparc32/v8/submul_1.asm
new file mode 100644 (file)
index 0000000..9ed132f
--- /dev/null
+++ b/rts/gmp/mpn/sparc32/v8/submul_1.asm
@@ -0,0 +1,58 @@
+dnl  SPARC v8 mpn_submul_1 -- Multiply a limb vector with a limb and
+dnl  subtract 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)
+       sub     %g0,%o2,%o2             C negate ...
+       sll     %o2,2,%o2               C ... and scale size
+       sub     %o1,%o2,%o1             C o1 is offset s1_ptr
+       sub     %o0,%o2,%g1             C g1 is offset res_ptr
+
+       mov     0,%o0                   C clear cy_limb
+
+L(loop):
+       ld      [%o1+%o2],%o4
+       ld      [%g1+%o2],%g2
+       umul    %o4,%o3,%o5
+       rd      %y,%g3
+       addcc   %o5,%o0,%o5
+       addx    %g3,0,%o0
+       subcc   %g2,%o5,%g2
+       addx    %o0,0,%o0
+       st      %g2,[%g1+%o2]
+
+       addcc   %o2,4,%o2
+       bne     L(loop)
+        nop
+
+       retl
+        nop
+EPILOGUE(mpn_submul_1)