Re: mail/sendmail not relaying on netbsd-9/sparc, problem with OpenSSL update?

["John D. Baker" <jdbaker%consolidated.net@localhost>]

Trying again as the original seems to have disappeared...

On Thu, 8 Apr 2021, John D. Baker wrote:

> Date: Thu, 8 Apr 2021 02:36:07 -0500 (CDT)
> From: John D. Baker <jdbaker%spike.technoskunk.fur@localhost>
> To: RVP <rvp%SDF.ORG@localhost>
> Cc: Martin Husemann <martin%duskware.de@localhost>, John Nemeth <jnemeth%cue.bc.ca@localhost>,
>     current-users%NetBSD.org@localhost
> Subject: Re: mail/sendmail not relaying on netbsd-9/sparc,
>     problem with OpenSSL update?
> 
> On Thu, 8 Apr 2021, RVP wrote:
> 
> > As a workaround, until the offending opcode is found, try
> > `#undef GHASH_ASM_SPARC' on line 692 in
> > src/crypto/external/bsd/openssl/dist/crypto/modes/gcm128.c to force
> > use of the C functions.
> 
> A diff of "gcm128c" between -current and netbsd-9 before the pullup
> shows:
> 
> [...]
> -#  if defined(__arch64__)
> -#   define GHASH_ASM_SPARC
> -#   define GCM_FUNCREF_4BIT
> +#  define GHASH_ASM_SPARC
> +#  define GCM_FUNCREF_4BIT
>  extern unsigned int OPENSSL_sparcv9cap_P[];
>  void gcm_init_vis3(u128 Htable[16], const u64 Xi[2]);
>  void gcm_gmult_vis3(u64 Xi[2], const u128 Htable[16]);
>  void gcm_ghash_vis3(u64 Xi[2], const u128 Htable[16], const u8 *inp,
>                      size_t len);
> -#  endif
> [...]
> 
> That is, before the pull-up of OpenSSL 1.1.1k, the "GHASH_ASM_SPARC"
> macro was conditionally defined iff "__arch64__" was also defined--
> likely an internal compiler definition.
> 
> With -current and netbsd-9 after the pull up, that conditionalization
> has been removed.  The supplied assembly code (wrapped in a perl
> script) implies by filename that it is for sparcv9 and up CPUs.
> 
> Alas I don't know sparc assembly, so I will have to defer to others
> whether it can be rendered harmless for sparcv8 and prior CPUs.
> 
> Or just reinstate the above conditionalization.
> 
> 

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