From 9a58ce92702efdca3cb756c9edd59596e293fba1 Mon Sep 17 00:00:00 2001 From: David Monniaux Date: Sat, 8 Feb 2020 22:07:31 +0100 Subject: why did we remove the ppc runtime ?! --- runtime/powerpc/i64_sar.s | 60 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 runtime/powerpc/i64_sar.s (limited to 'runtime/powerpc/i64_sar.s') diff --git a/runtime/powerpc/i64_sar.s b/runtime/powerpc/i64_sar.s new file mode 100644 index 00000000..c7da448f --- /dev/null +++ b/runtime/powerpc/i64_sar.s @@ -0,0 +1,60 @@ +# ***************************************************************** +# +# 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 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 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 version. + + .text + +# Shift right signed + + .balign 16 + .globl __compcert_i64_sar +__compcert_i64_sar: + andi. r5, r5, 63 # take amount modulo 64 + cmpwi r5, 32 + bge 1f # amount < 32? + subfic r6, r5, 32 # r6 = 32 - amount + srw r4, r4, r5 # RH = XH >>s amount + slw r0, r3, r6 # RL = XL >>u amount | XH << (32 - amount) + or r4, r4, r0 + sraw r3, r3, r5 + blr +1: addi r6, r5, -32 # amount >= 32 + sraw r4, r3, r6 # RL = XH >>s (amount - 32) + srawi r3, r3, 31 # RL = sign extension of XH + blr + .type __compcert_i64_sar, @function + .size __compcert_i64_sar, .-__compcert_i64_sar + + \ No newline at end of file -- cgit