[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / DivU64x32Remainder.nasm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
; SPDX-License-Identifier: BSD-2-Clause-Patent\r
;\r
; Module Name:\r
;\r
;   DivError.asm\r
;\r
; Abstract:\r
;\r
;   Set error flag for all division functions\r
;\r
;------------------------------------------------------------------------------\r
\r
    SECTION .text\r
\r
;------------------------------------------------------------------------------\r
; UINT64\r
; EFIAPI\r
; InternalMathDivRemU64x32 (\r
;   IN      UINT64                    Dividend,\r
;   IN      UINT32                    Divisor,\r
;   OUT     UINT32                    *Remainder\r
;   );\r
;------------------------------------------------------------------------------\r
global ASM_PFX(InternalMathDivRemU64x32)\r
ASM_PFX(InternalMathDivRemU64x32):\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   .0                      ; abandon remainder if Remainder == NULL\r
    mov     [ecx], edx\r
.0:\r
    pop     edx                     ; edx <- quotient[32..63]\r
    ret\r
\r
Commit	Line	Data
fb79aa01 JJ	1	;------------------------------------------------------------------------------\r
	2	;\r
	3	; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
9344f092	4	; SPDX-License-Identifier: BSD-2-Clause-Patent\r
fb79aa01 JJ	5	;\r
	6	; Module Name:\r
	7	;\r
	8	; DivError.asm\r
	9	;\r
	10	; Abstract:\r
	11	;\r
	12	; Set error flag for all division functions\r
	13	;\r
	14	;------------------------------------------------------------------------------\r
	15	\r
	16	SECTION .text\r
	17	\r
	18	;------------------------------------------------------------------------------\r
	19	; UINT64\r
	20	; EFIAPI\r
	21	; InternalMathDivRemU64x32 (\r
	22	; IN UINT64 Dividend,\r
	23	; IN UINT32 Divisor,\r
	24	; OUT UINT32 *Remainder\r
	25	; );\r
	26	;------------------------------------------------------------------------------\r
	27	global ASM_PFX(InternalMathDivRemU64x32)\r
	28	ASM_PFX(InternalMathDivRemU64x32):\r
	29	mov ecx, [esp + 12] ; ecx <- divisor\r
	30	mov eax, [esp + 8] ; eax <- dividend[32..63]\r
	31	xor edx, edx\r
	32	div ecx ; eax <- quotient[32..63], edx <- remainder\r
	33	push eax\r
	34	mov eax, [esp + 8] ; eax <- dividend[0..31]\r
	35	div ecx ; eax <- quotient[0..31]\r
	36	mov ecx, [esp + 20] ; ecx <- Remainder\r
	37	jecxz .0 ; abandon remainder if Remainder == NULL\r
	38	mov [ecx], edx\r
	39	.0:\r
	40	pop edx ; edx <- quotient[32..63]\r
	41	ret\r
	42	\r