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Diffstat (limited to 'runtime/ia32/i64_shr.S')
| -rw-r--r-- | runtime/ia32/i64_shr.S | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/runtime/ia32/i64_shr.S b/runtime/ia32/i64_shr.S deleted file mode 100644 index 34196f09..00000000 --- a/runtime/ia32/i64_shr.S +++ /dev/null @@ -1,59 +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" - -// Shift right unsigned - -// Note: IA32 shift instructions treat their amount (in %cl) modulo 32 - -FUNCTION(__i64_shr) - movl 12(%esp), %ecx // ecx = shift amount, treated mod 64 - testb $32, %cl - jne 1f - // shift amount < 32 - movl 4(%esp), %eax - movl 8(%esp), %edx - shrdl %cl, %edx, %eax // eax = low(XH:XL >> amount) - shrl %cl, %edx // edx = XH >> amount - ret - // shift amount >= 32 -1: movl 8(%esp), %eax - shrl %cl, %eax // eax = XH >> (amount - 32) - xorl %edx, %edx // edx = 0 - ret -ENDFUNCTION(__i64_shr) - |