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Diffstat (limited to 'runtime/ia32/i64_dtou.S')
| -rw-r--r-- | runtime/ia32/i64_dtou.S | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/runtime/ia32/i64_dtou.S b/runtime/ia32/i64_dtou.S deleted file mode 100644 index 4903f847..00000000 --- a/runtime/ia32/i64_dtou.S +++ /dev/null @@ -1,88 +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. - -#include "sysdeps.h" - -// Conversion float -> unsigned long - -FUNCTION(__i64_dtou) - subl $4, %esp - // Compare argument with 2^63 - fldl 8(%esp) - flds LC1 - fucomp - fnstsw %ax - sahf - jbe 1f // branch if not (ARG < 2^63) - // Argument < 2^63: convert as is - // Change rounding mode to "round towards zero" - fnstcw 0(%esp) - movw 0(%esp), %ax - movb $12, %ah - movw %ax, 2(%esp) - fldcw 2(%esp) - // Convert - fistpll 8(%esp) - movl 8(%esp), %eax - movl 12(%esp), %edx - // Restore rounding mode - fldcw 0(%esp) - addl $4, %esp - ret - // Argument > 2^63: offset ARG by -2^63, then convert, then offset RES by 2^63 -1: fsubs LC1 - // Change rounding mode to "round towards zero" - fnstcw 0(%esp) - movw 0(%esp), %ax - movb $12, %ah - movw %ax, 2(%esp) - fldcw 2(%esp) - // Convert - fistpll 8(%esp) - movl 8(%esp), %eax - movl 12(%esp), %edx - // Offset result by 2^63 - addl $0x80000000, %edx - // Restore rounding mode - fldcw 0(%esp) - addl $4, %esp - ret - - .p2align 2 -LC1: .long 0x5f000000 // 2^63 in single precision - -ENDFUNCTION(__i64_dtou) -
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