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Diffstat (limited to 'runtime/powerpc/ppc64/i64_umod.s')
| -rw-r--r-- | runtime/powerpc/ppc64/i64_umod.s | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/runtime/powerpc/ppc64/i64_umod.s b/runtime/powerpc/ppc64/i64_umod.s new file mode 100644 index 00000000..6bda1903 --- /dev/null +++ b/runtime/powerpc/ppc64/i64_umod.s @@ -0,0 +1,53 @@ +# ***************************************************************** +# +# The Compcert verified compiler +# +# Xavier Leroy, INRIA Paris-Rocquencourt +# +# Copyright (c) 2013 Institut National de Recherche en Informatique et +# en Automatique. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# * Neither the name of the <organization> nor the +# names of its contributors may be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT +# HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# ********************************************************************* + +# Helper functions for 64-bit integer arithmetic. PowerPC 64 version. + + .text + +### Unsigned modulus + + .balign 16 + .globl __i64_umod +__i64_umod: + rldimi r4, r3, 32, 0 # reassemble (r3,r4) as a 64-bit integer in r4 + rldimi r6, r5, 32, 0 # reassemble (r5,r6) as a 64-bit integer in r6 + divdu r0, r4, r6 + mulld r0, r0, r6 + subf r4, r0, r4 + srdi r3, r4, 32 # split r4 into (r3,r4) + blr + .type __i64_umod, @function + .size __i64_umod, .-__i64_umod + |