svn commit: r334947 - head/sys/modules

[Dimitry Andric]

On 16 Jun 2018, at 16:57, Kurt Lidl <lidl at pix.net> wrote:
> 
> On 6/11/18 4:42 AM, Dimitry Andric wrote:
>> Author: dim
>> Date: Mon Jun 11 08:42:03 2018
>> New Revision: 334947
>> URL: https://svnweb.freebsd.org/changeset/base/334947
>> Log:
>>   Disable building aesni with base gcc
>>      Because base gcc does not support the required intrinsics, do not
>>   attempt to compile the aesni module with it.
>>      Noticed by:	Dan Allen <danallen46 at gmail.com>
>>   MFC after:	3 days
>> Modified:
>>   head/sys/modules/Makefile
>> Modified: head/sys/modules/Makefile
>> ==============================================================================
>> --- head/sys/modules/Makefile	Mon Jun 11 08:11:35 2018	(r334946)
>> +++ head/sys/modules/Makefile	Mon Jun 11 08:42:03 2018	(r334947)
>> @@ -627,7 +627,9 @@ _aac=		aac
>>  _aacraid=	aacraid
>>  _acpi=		acpi
>>  .if ${MK_CRYPT} != "no" || defined(ALL_MODULES)
>> +.if ${COMPILER_TYPE} != "gcc" || ${COMPILER_VERSION} > 40201
>>  _aesni=		aesni
>> +.endif
>>  .endif
>>  _amd_ecc_inject=amd_ecc_inject
>>  _amdsbwd=	amdsbwd
> 
> I thought that FreeBSD's base gcc (but not a stock 4.2.1 gcc) had support for this.  As documented in UPDATING:
> 
> 20130903:
>  AES-NI intrinsic support has been added to gcc.  The AES-NI module
>  has been updated to use this support.  A new gcc is required to build
>  the aesni module on both i386 and amd64.

It didn't work for the original reporter on freebsd-stable@ here:

https://lists.freebsd.org/pipermail/freebsd-stable/2018-May/089026.html

and for me it still gives:

$ make -C /usr/src/sys/modules/aesni
gcc -c -O3 -pipe -fno-strict-aliasing -Werror -D_KERNEL -DKLD_MODULE -I. -I/usr/src/sys -fno-common -mno-mmx -mno-sse -msoft-float -ffreestanding -fwrapv -fstack-protector -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -Wundef -Wno-pointer-sign -fformat-extensions -Wmissing-include-dirs -fdiagnostics-show-option -Wno-unknown-pragmas -Wno-uninitialized -finline-limit=8000 -fms-extensions --param inline-unit-growth=100 --param large-function-growth=1000 -mno-align-long-strings -mpreferred-stack-boundary=2 -std=iso9899:1999 -Werror   -mmmx -msse -msse4 -maes -mpclmul /usr/src/sys/crypto/aesni/aesni_ghash.c
cc1: error: unrecognized command line option "-msse4"
cc1: error: unrecognized command line option "-mpclmul"
*** Error code 1

Those unrecognized flags were added more than 3 years ago, in r275732,
so I assume this has been broken since that time.  Maybe nobody built
any kernels with gcc for 3 years? :)

-Dimitry

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