[mirror_edk2.git] / OldMdePkg / Library / BaseLib / Ia32 / DivU64x32Remainder.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006, Intel Corporation\r
; All rights reserved. This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php\r
;\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
; Module Name:\r
;\r
;   DivError.asm\r
;\r
; Abstract:\r
;\r
;   Set error flag for all division functions\r
;\r
;------------------------------------------------------------------------------\r
\r
    .386\r
    .model  flat,C\r
    .code\r
\r
;------------------------------------------------------------------------------\r
; UINT64\r
; EFIAPI\r
; InternalMathDivRemU64x32 (\r
;   IN      UINT64                    Dividend,\r
;   IN      UINT32                    Divisor,\r
;   OUT     UINT32                    *Remainder\r
;   );\r
;------------------------------------------------------------------------------\r
InternalMathDivRemU64x32    PROC\r
    mov     ecx, [esp + 12]         ; ecx <- divisor\r
    mov     eax, [esp + 8]          ; eax <- dividend[32..63]\r
    xor     edx, edx\r
    div     ecx                     ; eax <- quotient[32..63], edx <- remainder\r
    push    eax\r
    mov     eax, [esp + 8]          ; eax <- dividend[0..31]\r
    div     ecx                     ; eax <- quotient[0..31]\r
    mov     ecx, [esp + 20]         ; ecx <- Remainder\r
    jecxz   @F                      ; abandon remainder if Remainder == NULL\r
    mov     [ecx], edx\r
@@:\r
    pop     edx                     ; edx <- quotient[32..63]\r
    ret\r
InternalMathDivRemU64x32    ENDP\r
\r
    END\r
Commit	Line	Data
878ddf1f	1	;------------------------------------------------------------------------------\r
	2	;\r
	3	; Copyright (c) 2006, Intel Corporation\r
	4	; All rights reserved. This program and the accompanying materials\r
	5	; are licensed and made available under the terms and conditions of the BSD License\r
	6	; which accompanies this distribution. The full text of the license may be found at\r
	7	; http://opensource.org/licenses/bsd-license.php\r
	8	;\r
	9	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	;\r
	12	; Module Name:\r
	13	;\r
	14	; DivError.asm\r
	15	;\r
	16	; Abstract:\r
	17	;\r
	18	; Set error flag for all division functions\r
	19	;\r
	20	;------------------------------------------------------------------------------\r
	21	\r
	22	.386\r
	23	.model flat,C\r
	24	.code\r
	25	\r
3f566587	26	;------------------------------------------------------------------------------\r
	27	; UINT64\r
	28	; EFIAPI\r
	29	; InternalMathDivRemU64x32 (\r
	30	; IN UINT64 Dividend,\r
	31	; IN UINT32 Divisor,\r
	32	; OUT UINT32 *Remainder\r
	33	; );\r
	34	;------------------------------------------------------------------------------\r
878ddf1f	35	InternalMathDivRemU64x32 PROC\r
a9a812a0	36	mov ecx, [esp + 12] ; ecx <- divisor\r
a9a812a0	37	mov eax, [esp + 8] ; eax <- dividend[32..63]\r
878ddf1f	38	xor edx, edx\r
a9a812a0	39	div ecx ; eax <- quotient[32..63], edx <- remainder\r
878ddf1f	40	push eax\r
a9a812a0	41	mov eax, [esp + 8] ; eax <- dividend[0..31]\r
	42	div ecx ; eax <- quotient[0..31]\r
	43	mov ecx, [esp + 20] ; ecx <- Remainder\r
3f566587	44	jecxz @F ; abandon remainder if Remainder == NULL\r
878ddf1f	45	mov [ecx], edx\r
878ddf1f	46	@@:\r
a9a812a0	47	pop edx ; edx <- quotient[32..63]\r
878ddf1f	48	ret\r
	49	InternalMathDivRemU64x32 ENDP\r
	50	\r
	51	END\r