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Date:      Wed, 24 Nov 2021 19:24:40 +0100
From:      Piotr Kubaj <pkubaj@anongoth.pl>
To:        John Baldwin <jhb@freebsd.org>
Cc:        src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org
Subject:   Re: git: 3a60869237b8 - main - Add assembly optimized code for OpenSSL on powerpc, powerpc64 and powerpc64le
Message-ID:  <YZ6DaBSZIT%2BKVsR%2B@KGPE-D16>
In-Reply-To: <f24e57bd-139b-9c39-ebe8-6adaddcd726e@FreeBSD.org>
References:  <202111232227.1ANMRCYk070382@gitrepo.freebsd.org> <f24e57bd-139b-9c39-ebe8-6adaddcd726e@FreeBSD.org>

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OK, it looks like ossl uses fpu_kern functions and those are available only=
 an aarch64, amd64 and i386:
cc  -O2 -pipe -fno-common  -fno-strict-aliasing -Werror -D_KERNEL -DKLD_MOD=
ULE -nostdinc   -include /usr/obj/usr/src/powerpc.powerpc64/sys/modules/oss=
l/opt_global.h -I. -I/usr/src/sys -I/usr/src/sys/contrib/ck/include -fno-co=
mmon  -fPIC -mlongcall -fno-omit-frame-pointer -fdebug-prefix-map=3D./machi=
ne=3D/usr/src/sys/powerpc/include     -MD  -MF.depend.ossl.o -MTossl.o -mno=
-altivec -msoft-float -mabi=3Delfv2 -ffreestanding -fwrapv -fstack-protecto=
r -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-pr=
ototypes -Wpointer-arith -Wcast-qual -Wundef -Wno-pointer-sign -D__printf__=
=3D__freebsd_kprintf__ -Wmissing-include-dirs -fdiagnostics-show-option -Wn=
o-unknown-pragmas -Wno-error-tautological-compare -Wno-error-empty-body -Wn=
o-error-parentheses-equality -Wno-error-unused-function -Wno-error-pointer-=
sign -Wno-error-shift-negative-value -Wno-address-of-packed-member -Wno-for=
mat-zero-length     -std=3Diso9899:1999 -c /usr/src/sys/crypto/openssl/ossl=
=2Ec -o ossl.o
/usr/src/sys/crypto/openssl/ossl.c:190:4: error: implicit declaration of fu=
nction 'fpu_kern_enter' is invalid in C99 [-Werror,-Wimplicit-function-decl=
aration]
                        fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
                        ^
/usr/src/sys/crypto/openssl/ossl.c:190:36: error: use of undeclared identif=
ier 'FPU_KERN_NOCTX'
                        fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
                                                        ^
/usr/src/sys/crypto/openssl/ossl.c:193:4: error: implicit declaration of fu=
nction 'fpu_kern_leave' is invalid in C99 [-Werror,-Wimplicit-function-decl=
aration]
                        fpu_kern_leave(curthread, NULL);
                        ^
/usr/src/sys/crypto/openssl/ossl.c:193:4: note: did you mean 'fpu_kern_ente=
r'?
/usr/src/sys/crypto/openssl/ossl.c:190:4: note: 'fpu_kern_enter' declared h=
ere
                        fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
                        ^
/usr/src/sys/crypto/openssl/ossl.c:214:6: error: implicit declaration of fu=
nction 'is_fpu_kern_thread' is invalid in C99 [-Werror,-Wimplicit-function-=
declaration]
        if (is_fpu_kern_thread(0)) {
            ^
/usr/src/sys/crypto/openssl/ossl.c:217:3: error: implicit declaration of fu=
nction 'fpu_kern_enter' is invalid in C99 [-Werror,-Wimplicit-function-decl=
aration]
                fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
                ^
/usr/src/sys/crypto/openssl/ossl.c:217:35: error: use of undeclared identif=
ier 'FPU_KERN_NOCTX'
                fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
                                                ^
/usr/src/sys/crypto/openssl/ossl.c:263:3: error: implicit declaration of fu=
nction 'fpu_kern_leave' is invalid in C99 [-Werror,-Wimplicit-function-decl=
aration]
                fpu_kern_leave(curthread, NULL);
                ^
7 errors generated.

AFAIK porting those is not easy and it's certainly above my pay grade.

On 21-11-24 08:15:26, John Baldwin wrote:
> On 11/23/21 2:27 PM, Piotr Kubaj wrote:
> > The branch main has been updated by pkubaj (ports committer):
> >=20
> > URL: https://cgit.FreeBSD.org/src/commit/?id=3D3a60869237b8b315fe66497c=
f5299ec08b688533
> >=20
> > commit 3a60869237b8b315fe66497cf5299ec08b688533
> > Author:     Piotr Kubaj <pkubaj@FreeBSD.org>
> > AuthorDate: 2021-11-22 02:28:46 +0000
> > Commit:     Piotr Kubaj <pkubaj@FreeBSD.org>
> > CommitDate: 2021-11-23 22:26:53 +0000
> >=20
> >      Add assembly optimized code for OpenSSL on powerpc, powerpc64 and =
powerpc64le
> >     =20
> >      Summary:
> >      1. https://github.com/openssl/openssl/commit/34ab13b7d8e3e723adb60=
be8142e38b7c9cd382a
> >      needs to be merged for ELFv2 support on big-endian.
> >      2. crypto/openssl/crypto/ppccap.c needs to be patched.
> >      Same reason as in https://github.com/openssl/openssl/pull/17082.
>=20
> Have you looked at adding powerpc support to ossl(4)?  It should be fairl=
y simple
> (just adding the right asm files in Makefiles and the powerpc equivalent =
of
> OSSL_cpuid).
>=20
> --=20
> John Baldwin

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