The ChaCha20 ARM asm is generated from GCC. This change updates the GCC
command line to include -ffunction-sections, which causes GCC to put
each function in its own section so that the linker with --gc-sections
can trim unused functions.
Since the file only has a single function, this is a bit useless, but
it'll now be consistent with the other ARM asm.
Change-Id: If12c675700310ea55af817b5433844eeffc9d029
Reviewed-on: https://boringssl-review.googlesource.com/6006
Reviewed-by: Adam Langley <agl@google.com>
This change causes the generated assembly files for ARM and AArch64 to
have #if guards for __arm__ and __aarch64__, respectively. Since
building on ARM is only supported for Linux, we only have to worry about
GCC/Clang's predefines.
Change-Id: I7198eab6230bcfc26257f0fb6a0cc3166df0bb29
Reviewed-on: https://boringssl-review.googlesource.com/5173
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: I34ee66fcc53d3371591beee3373c46598c31b5c5
Reviewed-on: https://boringssl-review.googlesource.com/3460
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
When addressing [1], I checked the AEAD code but brain-farted: a key is
aligned in that code, but it's the Poly1305 key, which doesn't matter
here.
It would be nice to align the ChaCha key too, but Android doesn't have
|posix_memalign| in the versions that we care about. It does have
|memalign|, but that's documented as "obsolete" and we don't have a
concept of an Android OS yet and I don't want to add one just for this.
So this change uses the buffer for loading the key again.
(Note that we never used to check for alignment of the |key| before
calling this. We must have gotten it for free somehow when checking the
alignment of |in| and |out|. But there are clearly some paths that don't
have an aligned key:
https://code.google.com/p/chromium/issues/detail?id=454308.)
At least the generation script started paying off immediately ☺.
[1] https://boringssl-review.googlesource.com/#/c/3132/1/crypto/chacha/chacha_vec.c@185
Change-Id: I4f893ba0733440fddd453f9636cc2aeaf05076ed
Reviewed-on: https://boringssl-review.googlesource.com/3270
Reviewed-by: Adam Langley <agl@google.com>
Obviously I shouldn't be doing this by hand each time.
Change-Id: I64e3f5ede5c47eddbff3b18172a95becc681b486
Reviewed-on: https://boringssl-review.googlesource.com/3170
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
I put the header back, but missed the #endif at the end of the file.
Regenerating this is clearly too error prone – I'll write a script to do
it for the future.
Change-Id: I06968c9f7a4673f5942725e727c67cb4e01d361a
By copying the input and output data via an aligned buffer, the
alignment requirements for the NEON ChaCha implementation on ARM can be
eliminted. This does, however, reduce the speed when aligned buffers are
used. However, updating the GCC version used to generate the ASM more
than makes up for that.
On a SnapDragon 801 (OnePlus One) the aligned speed was 214.6 MB/s and
the unaligned speed was 112.1 MB/s. Now both are 218.4 MB/s. A Nexus 7
also shows a slight speed up.
Change-Id: I68321ba56767fa5354b31a1491a539b299236e9a
Reviewed-on: https://boringssl-review.googlesource.com/3132
Reviewed-by: Adam Langley <agl@google.com>
Change-Id: Id77fb7c904cbfe8172466dff20b6a715d90b806c
Reviewed-on: https://boringssl-review.googlesource.com/1710
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
This change marks public symbols as dynamically exported. This means
that it becomes viable to build a shared library of libcrypto and libssl
with -fvisibility=hidden.
On Windows, one not only needs to mark functions for export in a
component, but also for import when using them from a different
component. Because of this we have to build with
|BORINGSSL_IMPLEMENTATION| defined when building the code. Other
components, when including our headers, won't have that defined and then
the |OPENSSL_EXPORT| tag becomes an import tag instead. See the #defines
in base.h
In the asm code, symbols are now hidden by default and those that need
to be exported are wrapped by a C function.
In order to support Chromium, a couple of libssl functions were moved to
ssl.h from ssl_locl.h: ssl_get_new_session and ssl_update_cache.
Change-Id: Ib4b76e2f1983ee066e7806c24721e8626d08a261
Reviewed-on: https://boringssl-review.googlesource.com/1350
Reviewed-by: Adam Langley <agl@google.com>
