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2a19755804
- Bump Go from 1.19 to 1.26 and update all dependencies - Rewrite CI workflow with matrix strategy (Linux, macOS, Windows) - Update GitHub Actions to current versions (checkout@v4, setup-go@v5) - Update CodeQL actions from v1 to v3 - Fix cross-platform bug in mock/path.go (path.Join -> filepath.Join) - Clean up dependabot config (weekly schedule, remove stale ignore) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
//go:build !noasm && gc && amd64 && !arm64
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// +build !noasm,gc,amd64,!arm64
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package sha1cd
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import (
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"runtime"
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"github.com/klauspost/cpuid/v2"
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shared "github.com/pjbgf/sha1cd/internal"
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)
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var hasSHANI = (runtime.GOARCH == "amd64" &&
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cpuid.CPU.Supports(cpuid.AVX) &&
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cpuid.CPU.Supports(cpuid.SHA) &&
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cpuid.CPU.Supports(cpuid.SSE3) &&
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cpuid.CPU.Supports(cpuid.SSE4))
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// blockAMD64 hashes the message p into the current state in h.
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// Both m1 and cs are used to store intermediate results which are used by the collision detection logic.
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//
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//go:noescape
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func blockAMD64(h []uint32, p []byte, m1 []uint32, cs [][5]uint32)
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func block(dig *digest, p []byte) {
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if forceGeneric || !hasSHANI {
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blockGeneric(dig, p)
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return
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}
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m1 := [shared.Rounds]uint32{}
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cs := [shared.PreStepState][shared.WordBuffers]uint32{}
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for len(p) >= shared.Chunk {
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// The assembly code only supports processing a block at a time,
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// so adjust the chunk accordingly.
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chunk := p[:shared.Chunk]
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blockAMD64(dig.h[:], chunk, m1[:], cs[:])
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rectifyCompressionState(m1, &cs)
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col := checkCollision(m1, cs, dig.h)
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if col {
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dig.col = true
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blockAMD64(dig.h[:], chunk, m1[:], cs[:])
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blockAMD64(dig.h[:], chunk, m1[:], cs[:])
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}
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p = p[shared.Chunk:]
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}
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}
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