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| author | hyc <hyc@symas.com> | 2017-04-12 23:53:08 +0100 |
|---|---|---|
| committer | hyc <hyc@symas.com> | 2017-04-12 23:53:08 +0100 |
| commit | a467321800bc2ecd910372d6eed33c6ae3a625b5 (patch) | |
| tree | 9c3f26851402c891e1f8bac8b69f01c52bc001e8 /src/crypto/slow-hash.c | |
| parent | Fix block_longhash_worker thread (diff) | |
| download | monero-a467321800bc2ecd910372d6eed33c6ae3a625b5.tar.xz | |
Clean up ARMv8-a aes_expand_key()
The inline asm was lying about its parameters
Diffstat (limited to 'src/crypto/slow-hash.c')
| -rw-r--r-- | src/crypto/slow-hash.c | 40 |
1 files changed, 16 insertions, 24 deletions
diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c index 117f158ee..6afa28934 100644 --- a/src/crypto/slow-hash.c +++ b/src/crypto/slow-hash.c @@ -722,32 +722,24 @@ union cn_slow_hash_state * key schedule. Don't try to use this for vanilla AES. */ static void aes_expand_key(const uint8_t *key, uint8_t *expandedKey) { -__asm__("mov x2, %1\n\t" : : "r"(key), "r"(expandedKey)); +static const int rcon[] = { + 0x01,0x01,0x01,0x01, + 0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d, // rotate-n-splat + 0x1b,0x1b,0x1b,0x1b }; __asm__( -" adr x3,Lrcon\n" -"\n" " eor v0.16b,v0.16b,v0.16b\n" -" ld1 {v3.16b},[x0],#16\n" -" ld1 {v1.4s,v2.4s},[x3],#32\n" -" b L256\n" -".align 5\n" -"Lrcon:\n" -".long 0x01,0x01,0x01,0x01\n" -".long 0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d // rotate-n-splat\n" -".long 0x1b,0x1b,0x1b,0x1b\n" -"\n" -".align 4\n" -"L256:\n" -" ld1 {v4.16b},[x0]\n" -" mov w1,#5\n" -" st1 {v3.4s},[x2],#16\n" +" ld1 {v3.16b},[%0],#16\n" +" ld1 {v1.4s,v2.4s},[%2],#32\n" +" ld1 {v4.16b},[%0]\n" +" mov w2,#5\n" +" st1 {v3.4s},[%1],#16\n" "\n" -"Loop256:\n" +"1:\n" " tbl v6.16b,{v4.16b},v2.16b\n" " ext v5.16b,v0.16b,v3.16b,#12\n" -" st1 {v4.4s},[x2],#16\n" +" st1 {v4.4s},[%1],#16\n" " aese v6.16b,v0.16b\n" -" subs w1,w1,#1\n" +" subs w2,w2,#1\n" "\n" " eor v3.16b,v3.16b,v5.16b\n" " ext v5.16b,v0.16b,v5.16b,#12\n" @@ -757,8 +749,8 @@ __asm__( " eor v3.16b,v3.16b,v5.16b\n" " shl v1.16b,v1.16b,#1\n" " eor v3.16b,v3.16b,v6.16b\n" -" st1 {v3.4s},[x2],#16\n" -" b.eq Ldone\n" +" st1 {v3.4s},[%1],#16\n" +" b.eq 2f\n" "\n" " dup v6.4s,v3.s[3] // just splat\n" " ext v5.16b,v0.16b,v4.16b,#12\n" @@ -771,9 +763,9 @@ __asm__( " eor v4.16b,v4.16b,v5.16b\n" "\n" " eor v4.16b,v4.16b,v6.16b\n" -" b Loop256\n" +" b 1b\n" "\n" -"Ldone:\n"); +"2:\n" : : "r"(key), "r"(expandedKey), "r"(rcon)); } /* An ordinary AES round is a sequence of SubBytes, ShiftRows, MixColumns, AddRoundKey. There |