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Diffstat (limited to 'runtime/ia32/i64_dtou.s')
| -rw-r--r-- | runtime/ia32/i64_dtou.s | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/runtime/ia32/i64_dtou.s b/runtime/ia32/i64_dtou.s deleted file mode 100644 index d700d69..0000000 --- a/runtime/ia32/i64_dtou.s +++ /dev/null @@ -1,77 +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. IA32 version. - - .text - -# Conversion float -> unsigned long - - .globl __i64_dtou - .balign 16 -__i64_dtou: - subl $4, %esp - # Change rounding mode to "round towards zero" - fnstcw 0(%esp) - movw 0(%esp), %ax - movb $12, %ah - movw %ax, 2(%esp) - fldcw 2(%esp) - # Compare argument with 2^63 - fldl (4+4)(%esp) - flds LC1 - fucomp - fnstsw %ax - sahf - jbe 1f # branch if not (ARG < 2^63) - # Argument < 2^63: convert as is - fistpll 8(%esp) - movl 8(%esp), %eax - movl 12(%esp), %edx - jmp 2f - # Argument > 2^63: offset ARG by -2^63, then convert, then offset RES by 2^63 -1: fsubs LC1 - fistpll 8(%esp) - movl 8(%esp), %eax - movl 12(%esp), %edx - addl $0x80000000, %edx - # Restore rounding mode -2: fldcw 0(%esp) - addl $4, %esp - ret - .type __i64_dtou, @function - .size __i64_dtou, . - __i64_dtou - - .balign 4 -LC1: .long 0x5f000000 # 2^63 in single precision |