Michael D Kinney 4059386c70 ArmPkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2019-04-09 09:10:21 -07:00

50 lines
1.1 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------
#include <AsmMacroIoLib.h>
ASM_FUNC(__clzsi2)
@ frame_needed = 1, uses_anonymous_args = 0
stmfd sp!, {r7, lr}
add r7, sp, #0
movs r3, r0, lsr #16
movne r3, #16
moveq r3, #0
movne r9, #0
moveq r9, #16
mov r3, r0, lsr r3
tst r3, #65280
movne r0, #8
moveq r0, #0
movne lr, #0
moveq lr, #8
mov r3, r3, lsr r0
tst r3, #240
movne r0, #4
moveq r0, #0
movne ip, #0
moveq ip, #4
mov r3, r3, lsr r0
tst r3, #12
movne r0, #2
moveq r0, #0
movne r1, #0
moveq r1, #2
mov r2, r3, lsr r0
add r3, lr, r9
add r0, r3, ip
add r1, r0, r1
mov r0, r2, lsr #1
eor r0, r0, #1
ands r0, r0, #1
mvnne r0, #0
rsb r3, r2, #2
and r0, r0, r3
add r0, r1, r0
ldmfd sp!, {r7, pc}