diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f15/Lib/IA32/ms_shift.asm')
-rw-r--r-- | src/vendorcode/amd/agesa/f15/Lib/IA32/ms_shift.asm | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f15/Lib/IA32/ms_shift.asm b/src/vendorcode/amd/agesa/f15/Lib/IA32/ms_shift.asm new file mode 100644 index 0000000000..18b8ee4dde --- /dev/null +++ b/src/vendorcode/amd/agesa/f15/Lib/IA32/ms_shift.asm @@ -0,0 +1,110 @@ +;/** +; * @file +; * +; * Agesa library 32bit +; * +; * Contains AMD AGESA Library +; * +; * @xrefitem bom "File Content Label" "Release Content" +; * @e project: AGESA +; * @e sub-project: Lib +; * @e \$Revision: 9201 $ @e \$Date: 2008-10-31 03:36:20 -0500 (Fri, 31 Oct 2008) $ +; */ +;***************************************************************************** +; +; Copyright (C) 2012 Advanced Micro Devices, Inc. +; All rights reserved. +; +; 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 Advanced Micro Devices, Inc. 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 ADVANCED MICRO DEVICES, INC. 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. +; +;***************************************************************************** + +.586p +.model flat +ASSUME FS:NOTHING +.code +;/*++ +; +;Routine Description: +; +; Shifts a UINT64 to the right. +; +;Arguments: +; +; EDX:EAX - UINT64 value to be shifted +; CL - Shift count +; +;Returns: +; +; EDX:EAX - shifted value +; +;--*/ +_aullshr PROC NEAR C PUBLIC + .if (cl < 64) + .if (cl >= 32) + sub cl, 32 + mov eax, edx + xor edx, edx + .endif + shrd eax, edx, cl + shr edx, cl + .else + xor eax, eax + xor edx, edx + .endif + ret +_aullshr ENDP + +;/*++ +; +;Routine Description: +; +; Shifts a UINT64 to the left. +; +;Arguments: +; +; EDX:EAX - UINT64 value to be shifted +; CL - Shift count +; +;Returns: +; +; EDX:EAX - shifted value +; +;--*/ +_allshl PROC NEAR C PUBLIC USES CX + .if (cl < 64) + .if (cl >= 32) + sub cl, 32 + mov edx, eax + xor eax, eax + .endif + shld edx, eax, cl + shl eax, cl + .else + xor eax, eax + xor edx, edx + .endif + ret +_allshl ENDP + +END |