82942cf1d8
This implementation utilizes the same registers found in the reference
implementation, aiming to produce a minimal semantic diff between the
Avo-generated output and the original hand-written assembly.
To verify the Avo implementation, the reference and Avo-generated
assembly files are fed to `go tool asm`, capturing the debug output into
corresponding temp files. The debug output contains supplementary
metadata (line numbers, instruction offsets, and source file references)
that must be removed in order to obtain a semantic diff of the two
files. This is accomplished via a small utility script written in awk.
Commands used to verify Avo output:
GOROOT=$(go env GOROOT)
ASM_PATH="blake2b/blake2b_amd64.s"
REFERENCE="b2d3a6a4b4d36521cd7f653879cf6981e7c5c340"
go tool asm -o /dev/null -I "$GOROOT"/src/runtime -debug \
<(git cat-file -p "$REFERENCE:$ASM_PATH") \
> /tmp/reference.s
go tool asm -o /dev/null -I "$GOROOT"/src/runtime -debug \
"$ASM_PATH" \
> /tmp/avo.s
normalize(){
awk '{
$1=$2=$3="";
print substr($0,4)
}'
}
diff <(normalize < /tmp/reference.s) <(normalize < /tmp/avo.s)
Change-Id: I6dd59fb0b0365674aa5e43b69a57ea60fbcc4ba1
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/600456
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
|
||
|---|---|---|
| .. | ||
| _asm | ||
| blake2b.go | ||
| blake2bAVX2_amd64.go | ||
| blake2bAVX2_amd64.s | ||
| blake2b_amd64.s | ||
| blake2b_generic.go | ||
| blake2b_ref.go | ||
| blake2b_test.go | ||
| blake2x.go | ||
| register.go | ||