[edk2-devel] [edk2-libc Patch 1/1] edk2-libc/StdLib : Changes to Std LibC to facilitate 32 bit GCC builds
Michael D Kinney
michael.d.kinney at intel.com
Tue Jun 28 05:01:26 UTC 2022
Reviewed-by: Michael D Kinney <michael.d.kinney at intel.com>
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Jayaprakash, N
> Sent: Friday, June 17, 2022 1:42 AM
> To: devel at edk2.groups.io
> Cc: Kinney, Michael D <michael.d.kinney at intel.com>; Rebecca Cran <rebecca at nuviainc.com>; Jayaprakash, N <n.jayaprakash at intel.com>
> Subject: [edk2-devel] [edk2-libc Patch 1/1] edk2-libc/StdLib : Changes to Std LibC to facilitate 32 bit GCC builds
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3779
>
> This comit fixes the Python interpreter build issues with GCC 32 bit
> compiler tool chain. The changes are needed in StdLibC as given below
>
> * Add __divmoddi4 to Gcc.c produced by newer GCC compilers
> * Add -fno-lto to IA32 GCC builds of LibC.inf to support use of
> GCC intrinsics from Gcc.c.
> * Moved Main/Ia32/ftol2.obj in LibC.inf from binaries section to
> Sources.IA32 required only for MSFT IA32 compiler tool chain
>
> Cc: Michael D Kinney <michael.d.kinney at intel.com>
> Cc: Rebecca Cran <rebecca at nuviainc.com>
> Signed-off-by: Jayaprakash N <n.jayaprakash at intel.com>
> ---
> StdLib/LibC/CRT/Gcc.c | 7 +++++++
> StdLib/LibC/LibC.inf | 7 +++----
> 2 files changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/StdLib/LibC/CRT/Gcc.c b/StdLib/LibC/CRT/Gcc.c
> index cbf4ec2..bc1a4b2 100644
> --- a/StdLib/LibC/CRT/Gcc.c
> +++ b/StdLib/LibC/CRT/Gcc.c
> @@ -193,3 +193,10 @@ unsigned long long __umodti3(unsigned long long Dividend, unsigned long long Div
>
> return (unsigned long long) Remainder;
> }
> +
> +INT64 __divmoddi4 (INT64 num, INT64 den, INT64 *rem_p)
> +{
> + DEBUG((DEBUG_INFO, "%a:\n", __func__));
> + return DivS64x64Remainder (num, den, rem_p);
> +}
> +
> diff --git a/StdLib/LibC/LibC.inf b/StdLib/LibC/LibC.inf
> index 5bb2053..4771204 100644
> --- a/StdLib/LibC/LibC.inf
> +++ b/StdLib/LibC/LibC.inf
> @@ -46,7 +46,8 @@
> Main/Ia32/fpu_rmode.S | GCC
> Main/Ia32/isinfl.c
> Main/Ia32/isnanl.c
> -
> + Main/Ia32/ftol2.obj | MSFT
> +
> # Compiler helper (C RunTime) functions
> CRT/Ia32/llmul.c | MSFT # __allmul
> CRT/Ia32/llshl.c | MSFT # __allshl
> @@ -88,9 +89,6 @@
> [Sources.AARCH64]
> Main/Arm/flt_rounds.c
>
> -[Binaries.IA32]
> - LIB|Main/Ia32/ftol2.obj|*|MSFT
> -
> [Packages]
> StdLib/StdLib.dec
> StdLibPrivateInternalFiles/DoNotUse.dec
> @@ -116,4 +114,5 @@
> #
> [BuildOptions]
> MSFT:*_*_IA32_CC_FLAGS = /GL-
> + GCC:*_*_IA32_CC_FLAGS = -fno-lto
> GCC:*_*_ARM_CC_FLAGS = -fno-lto
> --
> 2.33.0.windows.1
>
>
>
>
>
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