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Diffstat (limited to 'runtime/powerpc/i64_shr.s')
| -rw-r--r-- | runtime/powerpc/i64_shr.s | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/runtime/powerpc/i64_shr.s b/runtime/powerpc/i64_shr.s deleted file mode 100644 index b634aafd..00000000 --- a/runtime/powerpc/i64_shr.s +++ /dev/null @@ -1,65 +0,0 @@ -# ***************************************************************** -# -# 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 version. - - .text - -# Shift right unsigned - - .balign 16 - .globl __compcert_i64_shr -__compcert_i64_shr: -# On PowerPC, shift instructions with amount mod 64 >= 32 return 0 -# lo = (lo >> amount) | (hi << (32 - amount)) | (hi >> (amount - 32)) -# hi = hi >> amount -# if 0 <= amount < 32: -# (amount - 32) mod 64 >= 32, hence hi >> (amount - 32) == 0 -# if 32 <= amount < 64: -# hi >> amount == 0 -# (32 - amount) mod 64 >= 32, hence hi << (32 - amount) == 0 - andi. r5, r5, 63 # take amount modulo 64 - subfic r6, r5, 32 # r6 = 32 - amount - addi r7, r5, -32 # r7 = amount - 32 - srw r4, r4, r5 - slw r0, r3, r6 - or r4, r4, r0 - srw r0, r3, r7 - or r4, r4, r0 - srw r3, r3, r5 - blr - .type __compcert_i64_shr, @function - .size __compcert_i64_shr, .-__compcert_i64_shr - -
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