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Diffstat (limited to 'runtime/ia32/i64_umulh.S')
| -rw-r--r-- | runtime/ia32/i64_umulh.S | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/runtime/ia32/i64_umulh.S b/runtime/ia32/i64_umulh.S deleted file mode 100644 index 449a0f8b..00000000 --- a/runtime/ia32/i64_umulh.S +++ /dev/null @@ -1,74 +0,0 @@ -// ***************************************************************** -// -// The Compcert verified compiler -// -// Xavier Leroy, INRIA Paris -// -// Copyright (c) 2016 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" - -// Multiply-high unsigned - -#define XL 12(%esp) -#define XH 16(%esp) -#define YL 20(%esp) -#define YH 24(%esp) - -// X * Y = 2^64 XH.YH + 2^32 (XH.YL + XL.YH) + XL.YL - -FUNCTION(__i64_umulh) - pushl %esi - pushl %edi - movl XL, %eax - mull YL // EDX:EAX = 64-bit product XL.YL - movl %edx, %ecx - xorl %esi, %esi - xorl %edi, %edi // EDI:ESI:ECX accumulate bits 127:32 of result - movl XH, %eax - mull YL // EDX:EAX = 64-bit product XH.YL - addl %eax, %ecx - adcl %edx, %esi - adcl $0, %edi - movl YH, %eax - mull XL // EDX:EAX = 64-bit product YH.XL - addl %eax, %ecx - adcl %edx, %esi - adcl $0, %edi - movl XH, %eax - mull YH // EDX:EAX = 64-bit product XH.YH - addl %esi, %eax - adcl %edi, %edx - popl %edi - popl %esi - ret -ENDFUNCTION(__i64_umulh) - |