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author | Bernhard Schommer <bernhardschommer@gmail.com> | 2015-10-20 14:45:56 +0200 |
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committer | Bernhard Schommer <bernhardschommer@gmail.com> | 2015-10-20 14:45:56 +0200 |
commit | ed6043fe910f7a320f7af6d3f9d35f39f5cf7ee1 (patch) | |
tree | 3fab134f5444f0472a1ff8c06e5b7686a40648dc /runtime/powerpc/ppc64/i64_dtou.s | |
parent | 4d542bc7eafadb16b845cf05d1eb4988eb55ed0f (diff) | |
parent | 8a95c3e07fd02eaa87f8cca447bc7d7c2642eb22 (diff) | |
download | compcert-ed6043fe910f7a320f7af6d3f9d35f39f5cf7ee1.tar.gz compcert-ed6043fe910f7a320f7af6d3f9d35f39f5cf7ee1.zip |
Merge remote-tracking branch 'origin/master' into named-externals
Conflicts:
arm/TargetPrinter.ml
backend/CMparser.mly
backend/SelectLongproof.v
backend/Selectionproof.v
cfrontend/C2C.ml
checklink/Asm_printers.ml
checklink/Check.ml
checklink/Fuzz.ml
common/AST.v
debug/DebugInformation.ml
debug/DebugInit.ml
debug/DwarfPrinter.ml
debug/DwarfTypes.mli
debug/Dwarfgen.ml
exportclight/ExportClight.ml
ia32/TargetPrinter.ml
powerpc/Asm.v
powerpc/SelectOpproof.v
powerpc/TargetPrinter.ml
Diffstat (limited to 'runtime/powerpc/ppc64/i64_dtou.s')
-rw-r--r-- | runtime/powerpc/ppc64/i64_dtou.s | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/runtime/powerpc/ppc64/i64_dtou.s b/runtime/powerpc/ppc64/i64_dtou.s new file mode 100644 index 00000000..60d5c9bf --- /dev/null +++ b/runtime/powerpc/ppc64/i64_dtou.s @@ -0,0 +1,66 @@ +# ***************************************************************** +# +# 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 + +### Conversion from double float to unsigned long + + .balign 16 + .globl __i64_dtou +__i64_dtou: + lis r0, 0x5f00 # 0x5f00_0000 = 2^63 in binary32 format + stwu r0, -16(r1) + lfs f2, 0(r1) # f2 = 2^63 + fcmpu cr0, f1, f2 # crbit 0 is f1 < f2 + bf 0, 1f # branch if f1 >= 2^63 (or f1 is NaN) + fctidz f1, f1 # convert as signed + stfd f1, 0(r1) + lwz r3, 0(r1) + lwz r4, 4(r1) + addi r1, r1, 16 + blr +1: fsub f1, f1, f2 # shift argument down by 2^63 + fctidz f1, f1 # convert as signed + stfd f1, 0(r1) + lwz r3, 0(r1) + lwz r4, 4(r1) + addis r3, r3, 0x8000 # shift result up by 2^63 + addi r1, r1, 16 + blr + .type __i64_dtou, @function + .size __i64_dtou, .-__i64_dtou + + |