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Diffstat (limited to 'runtime/powerpc64/i64_stof.s')
| -rw-r--r-- | runtime/powerpc64/i64_stof.s | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/runtime/powerpc64/i64_stof.s b/runtime/powerpc64/i64_stof.s deleted file mode 100644 index 779cbc18..00000000 --- a/runtime/powerpc64/i64_stof.s +++ /dev/null @@ -1,68 +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 64 version. - - .text - -### Conversion from signed long to single float - - .balign 16 - .globl __compcert_i64_stof -__compcert_i64_stof: - rldimi r4, r3, 32, 0 # reassemble (r3,r4) as a 64-bit integer in r4 - # Check whether -2^53 <= X < 2^53 - sradi r5, r4, 53 - addi r5, r5, 1 - cmpldi r5, 2 - blt 1f - # X is large enough that double rounding can occur. - # Avoid it by nudging X away from the points where double rounding - # occurs (the "round to odd" technique) - rldicl r5, r4, 0, 53 # extract bits 0 to 11 of X - addi r5, r5, 0x7FF # r5 = (X & 0x7FF) + 0x7FF - # bit 12 of r5 is 0 if all low 12 bits of X are 0, 1 otherwise - # bits 13-63 of r5 are 0 - or r4, r4, r5 # correct bit number 12 of X - rldicr r4, r4, 0, 52 # set to 0 bits 0 to 11 of X - # Convert to double, then round to single -1: stdu r4, -16(r1) - lfd f1, 0(r1) - fcfid f1, f1 - frsp f1, f1 - addi r1, r1, 16 - blr - .type __compcert_i64_stof, @function - .size __compcert_i64_stof, .-__compcert_i64_stof - |