903e31242d
Annotate functions with ASM_FUNC() so that they are emitted into separate sections. Note that in some cases, various entry points refer to different parts of the same routine, so in those cases, the files have been left untouched. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
56 lines
1.4 KiB
ArmAsm
56 lines
1.4 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#------------------------------------------------------------------------------
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#include <AsmMacroIoLib.h>
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ASM_FUNC(__clzsi2)
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@ frame_needed = 1, uses_anonymous_args = 0
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stmfd sp!, {r7, lr}
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add r7, sp, #0
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movs r3, r0, lsr #16
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movne r3, #16
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moveq r3, #0
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movne r9, #0
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moveq r9, #16
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mov r3, r0, lsr r3
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tst r3, #65280
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movne r0, #8
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moveq r0, #0
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movne lr, #0
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moveq lr, #8
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mov r3, r3, lsr r0
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tst r3, #240
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movne r0, #4
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moveq r0, #0
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movne ip, #0
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moveq ip, #4
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mov r3, r3, lsr r0
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tst r3, #12
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movne r0, #2
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moveq r0, #0
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movne r1, #0
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moveq r1, #2
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mov r2, r3, lsr r0
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add r3, lr, r9
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add r0, r3, ip
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add r1, r0, r1
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mov r0, r2, lsr #1
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eor r0, r0, #1
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ands r0, r0, #1
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mvnne r0, #0
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rsb r3, r2, #2
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and r0, r0, r3
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add r0, r1, r0
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ldmfd sp!, {r7, pc}
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