[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseLib / Ia32 / DivU64x32Remainder.asm

; Copyright (c) 2004, 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
3eb9473e	1	; Copyright (c) 2004, Intel Corporation \r
	2	; All rights reserved. This program and the accompanying materials \r
	3	; are licensed and made available under the terms and conditions of the BSD License \r
	4	; which accompanies this distribution. The full text of the license may be found at \r
	5	; http://opensource.org/licenses/bsd-license.php \r
	6	; \r
	7	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	8	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	9	;\r
	10	; Module Name:\r
	11	;\r
	12	; DivError.asm\r
	13	;\r
	14	; Abstract:\r
	15	;\r
	16	; Set error flag for all division functions\r
	17	;\r
	18	;------------------------------------------------------------------------------\r
	19	\r
	20	.386\r
	21	.model flat,C\r
	22	.code\r
	23	\r
	24	;------------------------------------------------------------------------------\r
	25	; UINT64\r
	26	; EFIAPI\r
	27	; InternalMathDivRemU64x32 (\r
	28	; IN UINT64 Dividend,\r
	29	; IN UINT32 Divisor,\r
	30	; OUT UINT32 *Remainder\r
	31	; );\r
	32	;------------------------------------------------------------------------------\r
	33	InternalMathDivRemU64x32 PROC\r
	34	mov ecx, [esp + 12] ; ecx <- divisor\r
	35	mov eax, [esp + 8] ; eax <- dividend[32..63]\r
	36	xor edx, edx\r
	37	div ecx ; eax <- quotient[32..63], edx <- remainder\r
	38	push eax\r
	39	mov eax, [esp + 8] ; eax <- dividend[0..31]\r
	40	div ecx ; eax <- quotient[0..31]\r
	41	mov ecx, [esp + 20] ; ecx <- Remainder\r
	42	jecxz @F ; abandon remainder if Remainder == NULL\r
	43	mov [ecx], edx\r
	44	@@:\r
	45	pop edx ; edx <- quotient[32..63]\r
	46	ret\r
	47	InternalMathDivRemU64x32 ENDP\r
	48	\r
	49	END\r