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;-----------------------------------------------------------------------------
; llshl.asm - long shift left
; Adapted from Visual Studio C runtime library
; Portions Copyright (c) Microsoft Corporation. All rights reserved. 
;-----------------------------------------------------------------------------
                .386
_TEXT           segment use32 para public 'CODE'
                public  __allshl

;
; llshl - long shift left
;
; Purpose:
;       Does a Long Shift Left (signed and unsigned are identical)
;       Shifts a long left any number of bits.
;
; Entry:
;       EDX:EAX - long value to be shifted
;       CL      - number of bits to shift by
;
; Exit:
;       EDX:EAX - shifted value
;
; Uses:
;       CL is destroyed.
;

__allshl        proc    near
                assume  cs:_TEXT

;
; Handle shifts of 64 or more bits (all get 0)
;
        cmp     cl, 64
        jae     short RETZERO

;
; Handle shifts of between 0 and 31 bits
;
        cmp     cl, 32
        jae     short MORE32
        shld    edx,eax,cl
        shl     eax,cl
        ret

;
; Handle shifts of between 32 and 63 bits
;
MORE32:
        mov     edx,eax
        xor     eax,eax
        and     cl,31
        shl     edx,cl
        ret

;
; return 0 in edx:eax
;
RETZERO:
        xor     eax,eax
        xor     edx,edx
        ret

__allshl        endp

_TEXT           ends
                end