ArmPkg/Library/CompilerIntrinsicsLib: Enable VS2017/ARM builds
Introduce CRT assembly replacements for __rt_sdiv, __rt_udiv, __rt_udiv64, __rt_sdiv64, __rt_srsh (by reusing the RVCT code) as well as memcpy and memset. For MSFT compatibility, some of the code needs to be explicitly forced to ARM, and the /oldit assembly flag needs to be added. Also, while RVCT_ASM_EXPORT macro invocations have been removed, the replacement code is designed to be as close as possible to the one that would have been generated if using the macros. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Pete Batard <pete@akeo.ie> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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@@ -1,6 +1,7 @@
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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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// Copyright (c) 2018, Pete Batard. 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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@@ -13,9 +14,30 @@
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//------------------------------------------------------------------------------
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EXPORT __aeabi_uldivmod
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EXPORT __rt_udiv64
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AREA s___aeabi_uldivmod, CODE, READONLY, ARM
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INCLUDE AsmMacroExport.inc
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ARM
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;
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;UINT64
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;EFIAPI
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;__rt_udiv64 (
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; IN UINT64 Divisor
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; IN UINT64 Dividend
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; )
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;
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__rt_udiv64
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; Swap r0-r1 and r2-r3
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mov r12, r0
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mov r0, r2
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mov r2, r12
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mov r12, r1
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mov r1, r3
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mov r3, r12
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b __aeabi_uldivmod
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;
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;UINT64
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@@ -25,7 +47,7 @@
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; IN UINT64 Divisor
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; )
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;
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RVCT_ASM_EXPORT __aeabi_uldivmod
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__aeabi_uldivmod
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stmdb sp!, {r4, r5, r6, lr}
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mov r4, r1
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mov r5, r0
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@@ -261,7 +283,6 @@ _ll_div0
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b __aeabi_ldiv0
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__aeabi_ldiv0
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BX r14
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bx r14
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END
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