Reorganisation of the source tree

[ghc-hetmet.git] / rts / gmp / mpn / powerpc64 / submul_1.asm

diff --git a/rts/gmp/mpn/powerpc64/submul_1.asm b/rts/gmp/mpn/powerpc64/submul_1.asm
new file mode 100644 (file)
index 0000000..17f6369
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+++ b/rts/gmp/mpn/powerpc64/submul_1.asm
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+# PowerPC-64 mpn_submul_1 -- Multiply a limb vector with a limb and subtract
+# the result from a second limb vector.
+
+# Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+
+# This file is part of the GNU MP Library.
+
+# The GNU MP Library is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or (at your
+# option) any later version.
+
+# The GNU MP Library is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+# License for more details.
+
+# You should have received a copy of the GNU Lesser General Public License
+# along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
+# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
+
+
+# INPUT PARAMETERS
+# res_ptr      r3
+# s1_ptr       r4
+# size         r5
+# s2_limb      r6
+
+include(`../config.m4')
+
+ASM_START()
+PROLOGUE(mpn_submul_1)
+       mtctr   5
+       li      9,0             # cy_limb = 0
+       addic   0,0,0
+       cal     3,-8(3)
+       cal     4,-8(4)
+.Loop:
+       ldu     0,8(4)
+       ld      10,8(3)
+       mulld   7,0,6
+       adde    7,7,9
+       mulhdu  9,0,6
+       addze   9,9
+       subfc   7,7,10
+       stdu    7,8(3)
+       subfe   11,11,11        # invert ...
+       addic   11,11,1         # ... carry
+       bdnz    .Loop
+
+       addze   3,9
+       blr
+EPILOGUE(mpn_submul_1)