mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-10 14:23:31 +01:00
40 lines
1.0 KiB
NASM
40 lines
1.0 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
;
|
|
; Module Name:
|
|
;
|
|
; LShiftU64.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; 64-bit left shift function for IA-32
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; UINT64
|
|
; EFIAPI
|
|
; InternalMathLShiftU64 (
|
|
; IN UINT64 Operand,
|
|
; IN UINTN Count
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMathLShiftU64)
|
|
ASM_PFX(InternalMathLShiftU64):
|
|
mov cl, [esp + 12]
|
|
xor eax, eax
|
|
mov edx, [esp + 4]
|
|
test cl, 32 ; Count >= 32?
|
|
jnz .0
|
|
mov eax, edx
|
|
mov edx, [esp + 8]
|
|
.0:
|
|
shld edx, eax, cl
|
|
shl eax, cl
|
|
ret
|
|
|