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examples/sha1: use comments (#41)

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mmcloughlin committed Jan 11, 2019
1 parent 9403305 commit d0357fa6f9d89199a923a65ea83758fe09d33dfc
Showing with 1,283 additions and 1,114 deletions.
  1. +5 −4 examples/sha1/asm.go
  2. +1,278 −1,110 examples/sha1/sha1.s
@@ -18,13 +18,13 @@ func main() {
w := AllocLocal(64)
W := func(r int) Mem { return w.Offset((r % 16) * 4) }

// Load initial hash.
Comment("Load initial hash.")
hash := [5]Register{GP32(), GP32(), GP32(), GP32(), GP32()}
for i, r := range hash {
MOVL(h.Offset(4*i), r)
}

// Initialize registers.
Comment("Initialize registers.")
a, b, c, d, e := GP32(), GP32(), GP32(), GP32(), GP32()
for i, r := range []Register{a, b, c, d, e} {
MOVL(hash[i], r)
@@ -42,6 +42,7 @@ func main() {
}

for r := 0; r < 80; r++ {
Commentf("Round %d.", r)
q := quarter[r/20]

// Load message value.
@@ -72,12 +73,12 @@ func main() {
a, b, c, d, e = t, a, b, c, d
}

// Final add.
Comment("Final add.")
for i, r := range []Register{a, b, c, d, e} {
ADDL(r, hash[i])
}

// Store results back.
Comment("Store results back.")
for i, r := range hash {
MOVL(r, h.Offset(4*i))
}
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