[edk2-devel] [PATCH v2 3/6] CryptoPkg/IntrinsicLib: Fix possible unresolved external symbol issue
Laszlo Ersek
lersek at redhat.com
Thu May 9 17:16:07 UTC 2019
On 05/09/19 07:23, Xiaoyu lu wrote:
> From: Xiaoyu Lu <xiaoyux.lu at intel.com>
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1089
>
> This is for the upcoming upgrade to OpenSSL_1_1_1b
>
> Compiler optimization(Visual Studio) may automatically use _ftol2
> instead of some type conversion. For example:
>
> OpensslLib.lib(drbg_lib.obj) : error LNK2001:
> unresolved external symbol __ftol2
>
> This patch add _ftol2 function for the compiler intrinsic.
>
> Cc: Jian J Wang <jian.j.wang at intel.com>
> Cc: Ting Ye <ting.ye at intel.com>
> Signed-off-by: Xiaoyu Lu <xiaoyux.lu at intel.com>
> ---
> CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c | 22 ++++++++++++++++++++++
> CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf | 4 +++-
> 2 files changed, 25 insertions(+), 1 deletion(-)
> create mode 100644 CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c
>
> diff --git a/CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c b/CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c
> new file mode 100644
> index 0000000..147a19a
> --- /dev/null
> +++ b/CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c
> @@ -0,0 +1,22 @@
> +/** @file
> + 64-bit Math Worker Function.
> + The 32-bit versions of C compiler generate calls to library routines
> + to handle 64-bit math. These functions use non-standard calling conventions.
> +
> +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +/*
> + * Floating point to integer conversion.
> + */
> +__declspec(naked) void _ftol2 (void)
> +{
> + _asm {
> + fistp qword ptr [esp-8]
> + mov edx, [esp-4]
> + mov eax, [esp-8]
> + ret
> + }
> +}
> diff --git a/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf b/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
> index 5a20967..fcbb933 100644
> --- a/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
> +++ b/CryptoPkg/Library/IntrinsicLib/IntrinsicLib.inf
> @@ -1,7 +1,7 @@
> ## @file
> # Intrinsic Routines Wrapper Library Instance.
> #
> -# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
> +# Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
> # SPDX-License-Identifier: BSD-2-Clause-Patent
> #
> ##
> @@ -29,9 +29,11 @@
>
> Ia32/MathLShiftS64.c | MSFT
> Ia32/MathRShiftU64.c | MSFT
> + Ia32/MathFtol.c | MSFT
>
> Ia32/MathLShiftS64.c | INTEL
> Ia32/MathRShiftU64.c | INTEL
> + Ia32/MathFtol.c | INTEL
>
> Ia32/MathLShiftS64.nasm | GCC
> Ia32/MathRShiftU64.nasm | GCC
>
Thank you for splitting this out; this is a nice improvement for the
structure of the patch series.
Thanks
Laszlo
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#40370): https://edk2.groups.io/g/devel/message/40370
Mute This Topic: https://groups.io/mt/31552210/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-
More information about the edk2-devel-archive
mailing list