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;------------------------------------------------------------------------------
;
; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; 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
|
