[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / DivU64x32.S

#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution.  The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
# Module Name:
#
#   DivU64x32.S
#
# Abstract:
#
#   Calculate the quotient of a 64-bit integer by a 32-bit integer
#
#------------------------------------------------------------------------------

.globl ASM_PFX(InternalMathDivU64x32)

#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InternalMathDivU64x32 (
#   IN      UINT64                    Dividend,
#   IN      UINT32                    Divisor
#   );
#------------------------------------------------------------------------------
ASM_PFX(InternalMathDivU64x32):
    movl    8(%esp), %eax
    movl    12(%esp), %ecx
    xorl    %edx, %edx
    divl    %ecx
    push    %eax                    # save quotient on stack
    movl    8(%esp), %eax
    divl    %ecx
    pop     %edx                    # restore high-order dword of the quotient
    ret
Commit	Line	Data
f1baef62	1	#------------------------------------------------------------------------------
f1baef62	2	#
1f86b07d	3	# Copyright (c) 2006 - 2008, Intel Corporation
f1baef62	4	# All rights reserved. This program and the accompanying materials
	5	# are licensed and made available under the terms and conditions of the BSD License
	6	# which accompanies this distribution. The full text of the license may be found at
	7	# http://opensource.org/licenses/bsd-license.php
	8	#
	9	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
	10	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
	11	#
	12	# Module Name:
	13	#
1f86b07d	14	# DivU64x32.S
f1baef62	15	#
	16	# Abstract:
	17	#
	18	# Calculate the quotient of a 64-bit integer by a 32-bit integer
	19	#
	20	#------------------------------------------------------------------------------
	21
	22	.globl ASM_PFX(InternalMathDivU64x32)
	23
	24	#------------------------------------------------------------------------------
	25	# UINT64
	26	# EFIAPI
	27	# InternalMathDivU64x32 (
	28	# IN UINT64 Dividend,
	29	# IN UINT32 Divisor
	30	# );
	31	#------------------------------------------------------------------------------
	32	ASM_PFX(InternalMathDivU64x32):
	33	movl 8(%esp), %eax
	34	movl 12(%esp), %ecx
	35	xorl %edx, %edx
	36	divl %ecx
57246fe0	37	push %eax # save quotient on stack
f1baef62	38	movl 8(%esp), %eax
f1baef62	39	divl %ecx
57246fe0	40	pop %edx # restore high-order dword of the quotient
f1baef62	41	ret