[project @ 1998-06-05 14:43:59 by simonm]

[ghc-hetmet.git] / ghc / rts / gmp / mpn / i960 / mul_1.s

diff --git a/ghc/rts/gmp/mpn/i960/mul_1.s b/ghc/rts/gmp/mpn/i960/mul_1.s
new file mode 100644 (file)
index 0000000..4ccaeab
--- /dev/null
+++ b/ghc/rts/gmp/mpn/i960/mul_1.s
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+# I960 __mpn_mul_1 -- Multiply a limb vector with a limb and store
+# the result in a second limb vector.
+
+# Copyright (C) 1995 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 Library General Public License as published by
+# the Free Software Foundation; either version 2 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 Library General Public
+# License for more details.
+
+# You should have received a copy of the GNU Library 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.
+
+.text
+       .align  4
+       .globl  ___mpn_mul_1
+___mpn_mul_1:
+       subo    g2,0,g2
+       shlo    2,g2,g4
+       subo    g4,g1,g1
+       subo    g4,g0,g13
+       mov     0,g0
+
+       cmpo    1,0             # clear C bit on AC.cc
+
+Loop:  ld      (g1)[g2*4],g5
+       emul    g3,g5,g6
+
+       addc    g0,g6,g6        # relies on that C bit is clear
+       st      g6,(g13)[g2*4]
+       addc    0,g7,g0
+
+       addo    g2,1,g2
+       cmpobne 0,g2,Loop       # when branch is taken, clears C bit
+
+       ret