mirror of https://github.com/acidanthera/audk.git
60 lines
1.5 KiB
ArmAsm
60 lines
1.5 KiB
ArmAsm
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//------------------------------------------------------------------------------
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//
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// Copyright (c) 2008 - 2009, 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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.text
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.align 2
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.globl ASM_PFX(__aeabi_ldivmod)
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//
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// A pair of (unsigned) long longs is returned in {{r0, r1}, {r2, r3}},
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// the quotient in {r0, r1}, and the remainder in {r2, r3}.
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//
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//__value_in_regs lldiv_t
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//EFIAPI
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//__aeabi_ldivmod (
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// IN UINT64 Dividen
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// IN UINT64 Divisor
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// )//
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//
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ASM_PFX(__aeabi_ldivmod):
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PUSH {r4,lr}
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ASRS r4,r1,#1
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EOR r4,r4,r3,LSR #1
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BPL L_Test1
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RSBS r0,r0,#0
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RSC r1,r1,#0
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L_Test1:
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TST r3,r3
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BPL L_Test2
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RSBS r2,r2,#0
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RSC r3,r3,#0
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L_Test2:
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BL ASM_PFX(__aeabi_uldivmod)
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TST r4,#0x40000000
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BEQ L_Test3
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RSBS r0,r0,#0
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RSC r1,r1,#0
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L_Test3:
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TST r4,#0x80000000
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BEQ L_Exit
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RSBS r2,r2,#0
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RSC r3,r3,#0
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L_Exit:
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POP {r4,pc}
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