diff options
Diffstat (limited to 'ppc')
| -rw-r--r-- | ppc/sha1ppc.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/ppc/sha1ppc.S b/ppc/sha1ppc.S index 140cb53370..f132696ee7 100644 --- a/ppc/sha1ppc.S +++ b/ppc/sha1ppc.S @@ -18,7 +18,7 @@ * %r0 - temp * %r3 - argument (pointer to 5 words of SHA state) * %r4 - argument (pointer to data to hash) - * %r5 - Contant K in SHA round (initially number of blocks to hash) + * %r5 - Constant K in SHA round (initially number of blocks to hash) * %r6-%r10 - Working copies of SHA variables A..E (actually E..A order) * %r11-%r26 - Data being hashed W[]. * %r27-%r31 - Previous copies of A..E, for final add back. @@ -48,7 +48,7 @@ * E += ROTL(A,5) + F(B,C,D) + W[i] + K; B = ROTL(B,30) * Then the variables are renamed: (A,B,C,D,E) = (E,A,B,C,D). * - * Every 20 rounds, the function F() and the contant K changes: + * Every 20 rounds, the function F() and the constant K changes: * - 20 rounds of f0(b,c,d) = "bit wise b ? c : d" = (^b & d) + (b & c) * - 20 rounds of f1(b,c,d) = b^c^d = (b^d)^c * - 20 rounds of f2(b,c,d) = majority(b,c,d) = (b&d) + ((b^d)&c) @@ -57,7 +57,7 @@ * These are all scheduled for near-optimal performance on a G4. * The G4 is a 3-issue out-of-order machine with 3 ALUs, but it can only * *consider* starting the oldest 3 instructions per cycle. So to get - * maximum performace out of it, you have to treat it as an in-order + * maximum performance out of it, you have to treat it as an in-order * machine. Which means interleaving the computation round t with the * computation of W[t+4]. * |