audk/ArmPkg/Library/CompilerIntrinsicsLib/Arm/muldi3.S

60 lines
1.5 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2008-2009 Apple Inc. All rights reserved.
#
# 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.
#
#------------------------------------------------------------------------------
.text
.align 2
.globl ___muldi3
___muldi3:
@ args = 0, pretend = 0, frame = 8
@ frame_needed = 1, uses_anonymous_args = 0
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
stmfd sp!, {r8, r10, r11}
ldr r11, L4
mov r4, r0, lsr #16
and r8, r0, r11
and ip, r2, r11
mul lr, ip, r8
mul ip, r4, ip
sub sp, sp, #8
add r10, ip, lr, lsr #16
and ip, r10, r11
and lr, lr, r11
mov r6, r2, lsr #16
str r4, [sp, #4]
add r4, lr, ip, asl #16
mul ip, r8, r6
mov r5, r10, lsr #16
add r10, ip, r4, lsr #16
and ip, r10, r11
and lr, r4, r11
add r4, lr, ip, asl #16
mul r0, r3, r0
add ip, r5, r10, lsr #16
ldr r5, [sp, #4]
mla r0, r2, r1, r0
mla r5, r6, r5, ip
mov r10, r4
add r11, r0, r5
mov r1, r11
mov r0, r4
sub sp, r7, #24
ldmfd sp!, {r8, r10, r11}
ldmfd sp!, {r4, r5, r6, r7, pc}
.p2align 2
L5:
.align 2
L4:
.long 65535