Fix compilation of poly1305 using go tip - it currently fails with:
./poly1305_arm.s:124: cannot reference SP without a symbol
./poly1305_arm.s:161: cannot reference SP without a symbol
./poly1305_arm.s:162: cannot reference SP without a symbol
asm: asm: assembly of ./poly1305_arm.s failed
Change-Id: I797dcf3641cc881b6cc192034b693ccf58317987
Reviewed-on: https://go-review.googlesource.com/10307
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
This change adds ARMv6 assembly implementation. The referenced assembly code was
the public domain source by Andrew Moon in https://github.com/floodyberry/poly1305-opt/blob/master/app/extensions/poly1305/poly1305_armv6-32.inc.
The author has confirmed that it's ok to put it under the Go license.
Benchmark results on Raspberry Pi (ARMv6-compatible processor rev 7),
o Without ARMv6 assembly
Benchmark1K 5000 287177 ns/op 3.57 MB/s
Benchmark64 50000 38880 ns/op 1.65 MB/s
o With ARMv6 assembly
Benchmark1K 100000 15964 ns/op 64.14 MB/s
Benchmark64 1000000 1472 ns/op 43.46 MB/s
Change-Id: Iea5b0b831ac097cc6d477a8fccbf0ddb4819724c
Reviewed-on: https://go-review.googlesource.com/9765
Reviewed-by: Adam Langley <agl@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>
Joel Sing
Jungho Ahn