;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> | |
; This program and the accompanying materials | |
; are licensed and made available under the terms and conditions of the BSD License | |
; which accompanies this distribution. The full text of the license may be found at | |
; http://opensource.org/licenses/bsd-license.php. | |
; | |
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
; | |
; Module Name: | |
; | |
; MathLShiftS64.nasm | |
; | |
; Abstract: | |
; | |
; 64-bit Math Worker Function. | |
; Shifts a 64-bit signed value left by a certain number of bits. | |
; | |
;------------------------------------------------------------------------------ | |
SECTION .text | |
global ASM_PFX(__ashldi3) | |
;------------------------------------------------------------------------------ | |
; | |
; void __cdecl __ashldi3 (void) | |
; | |
;------------------------------------------------------------------------------ | |
ASM_PFX(__ashldi3): | |
cmp cl,0x40 | |
jnc ReturnZero | |
cmp cl,0x20 | |
jnc More32 | |
shld edx,eax,cl | |
shl eax,cl | |
ret | |
More32: | |
mov edx,eax | |
xor eax,eax | |
and cl,0x1f | |
shl edx,cl | |
ret | |
ReturnZero: | |
xor eax,eax | |
xor edx,edx | |
ret |