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slow-hash: cache TLS references locally once at function start

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moneromooo-monero 2019-02-22 12:33:19 +00:00
parent 5bbbe3902b
commit 7ac3334217
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GPG Key ID: 686F07454D6CEFC3
1 changed files with 31 additions and 27 deletions
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58
src/crypto/slow-hash.c
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@ -274,10 +274,10 @@ static inline int use_v4_jit(void)
#define VARIANT2_2() \ #define VARIANT2_2() \
do if (variant == 2 || variant == 3) \ do if (variant == 2 || variant == 3) \
{ \ { \
*U64(hp_state + (j ^ 0x10)) ^= SWAP64LE(hi); \ *U64(local_hp_state + (j ^ 0x10)) ^= SWAP64LE(hi); \
*(U64(hp_state + (j ^ 0x10)) + 1) ^= SWAP64LE(lo); \ *(U64(local_hp_state + (j ^ 0x10)) + 1) ^= SWAP64LE(lo); \
hi ^= SWAP64LE(*U64(hp_state + (j ^ 0x20))); \ hi ^= SWAP64LE(*U64(local_hp_state + (j ^ 0x20))); \
lo ^= SWAP64LE(*(U64(hp_state + (j ^ 0x20)) + 1)); \ lo ^= SWAP64LE(*(U64(local_hp_state + (j ^ 0x20)) + 1)); \
} while (0) } while (0)
#define V4_REG_LOAD(dst, src) \ #define V4_REG_LOAD(dst, src) \
@ -405,7 +405,7 @@ static inline int use_v4_jit(void)
#define pre_aes() \ #define pre_aes() \
j = state_index(a); \ j = state_index(a); \
_c = _mm_load_si128(R128(&hp_state[j])); \ _c = _mm_load_si128(R128(&local_hp_state[j])); \
_a = _mm_load_si128(R128(a)); \ _a = _mm_load_si128(R128(a)); \
/* /*
@ -418,20 +418,20 @@ static inline int use_v4_jit(void)
* This code is based upon an optimized implementation by dga. * This code is based upon an optimized implementation by dga.
*/ */
#define post_aes() \ #define post_aes() \
VARIANT2_SHUFFLE_ADD_SSE2(hp_state, j); \ VARIANT2_SHUFFLE_ADD_SSE2(local_hp_state, j); \
_mm_store_si128(R128(c), _c); \ _mm_store_si128(R128(c), _c); \
_mm_store_si128(R128(&hp_state[j]), _mm_xor_si128(_b, _c)); \ _mm_store_si128(R128(&local_hp_state[j]), _mm_xor_si128(_b, _c)); \
VARIANT1_1(&hp_state[j]); \ VARIANT1_1(&local_hp_state[j]); \
j = state_index(c); \ j = state_index(c); \
p = U64(&hp_state[j]); \ p = U64(&local_hp_state[j]); \
b[0] = p[0]; b[1] = p[1]; \ b[0] = p[0]; b[1] = p[1]; \
VARIANT2_INTEGER_MATH_SSE2(b, c); \ VARIANT2_INTEGER_MATH_SSE2(b, c); \
VARIANT4_RANDOM_MATH(a, b, r, &_b, &_b1); \ VARIANT4_RANDOM_MATH(a, b, r, &_b, &_b1); \
__mul(); \ __mul(); \
VARIANT2_2(); \ VARIANT2_2(); \
VARIANT2_SHUFFLE_ADD_SSE2(hp_state, j); \ VARIANT2_SHUFFLE_ADD_SSE2(local_hp_state, j); \
a[0] += hi; a[1] += lo; \ a[0] += hi; a[1] += lo; \
p = U64(&hp_state[j]); \ p = U64(&local_hp_state[j]); \
p[0] = a[0]; p[1] = a[1]; \ p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \ a[0] ^= b[0]; a[1] ^= b[1]; \
VARIANT1_2(p + 1); \ VARIANT1_2(p + 1); \
@ -893,6 +893,10 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
if(hp_state == NULL) if(hp_state == NULL)
slow_hash_allocate_state(); slow_hash_allocate_state();
// locals to avoid constant TLS dereferencing
uint8_t *local_hp_state = hp_state;
v4_random_math_JIT_func local_hp_jitfunc = hp_jitfunc;
/* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */ /* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */
if (prehashed) { if (prehashed) {
memcpy(&state.hs, data, length); memcpy(&state.hs, data, length);
@ -915,7 +919,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
{ {
aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK); aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE); memcpy(&local_hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
} }
} }
else else
@ -927,7 +931,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
for(j = 0; j < INIT_SIZE_BLK; j++) for(j = 0; j < INIT_SIZE_BLK; j++)
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data); aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE); memcpy(&local_hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
} }
} }
@ -975,7 +979,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
{ {
// add the xor to the pseudo round // add the xor to the pseudo round
aes_pseudo_round_xor(text, text, expandedKey, &hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK); aes_pseudo_round_xor(text, text, expandedKey, &local_hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
} }
} }
else else
@ -985,7 +989,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
{ {
for(j = 0; j < INIT_SIZE_BLK; j++) for(j = 0; j < INIT_SIZE_BLK; j++)
{ {
xor_blocks(&text[j * AES_BLOCK_SIZE], &hp_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]); xor_blocks(&text[j * AES_BLOCK_SIZE], &local_hp_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data); aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
} }
} }
@ -1065,24 +1069,24 @@ union cn_slow_hash_state
#define pre_aes() \ #define pre_aes() \
j = state_index(a); \ j = state_index(a); \
_c = vld1q_u8(&hp_state[j]); \ _c = vld1q_u8(&local_hp_state[j]); \
_a = vld1q_u8((const uint8_t *)a); \ _a = vld1q_u8((const uint8_t *)a); \
#define post_aes() \ #define post_aes() \
VARIANT2_SHUFFLE_ADD_NEON(hp_state, j); \ VARIANT2_SHUFFLE_ADD_NEON(local_hp_state, j); \
vst1q_u8((uint8_t *)c, _c); \ vst1q_u8((uint8_t *)c, _c); \
vst1q_u8(&hp_state[j], veorq_u8(_b, _c)); \ vst1q_u8(&local_hp_state[j], veorq_u8(_b, _c)); \
VARIANT1_1(&hp_state[j]); \ VARIANT1_1(&local_hp_state[j]); \
j = state_index(c); \ j = state_index(c); \
p = U64(&hp_state[j]); \ p = U64(&local_hp_state[j]); \
b[0] = p[0]; b[1] = p[1]; \ b[0] = p[0]; b[1] = p[1]; \
VARIANT2_PORTABLE_INTEGER_MATH(b, c); \ VARIANT2_PORTABLE_INTEGER_MATH(b, c); \
VARIANT4_RANDOM_MATH(a, b, r, &_b, &_b1); \ VARIANT4_RANDOM_MATH(a, b, r, &_b, &_b1); \
__mul(); \ __mul(); \
VARIANT2_2(); \ VARIANT2_2(); \
VARIANT2_SHUFFLE_ADD_NEON(hp_state, j); \ VARIANT2_SHUFFLE_ADD_NEON(local_hp_state, j); \
a[0] += hi; a[1] += lo; \ a[0] += hi; a[1] += lo; \
p = U64(&hp_state[j]); \ p = U64(&local_hp_state[j]); \
p[0] = a[0]; p[1] = a[1]; \ p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \ a[0] ^= b[0]; a[1] ^= b[1]; \
VARIANT1_2(p + 1); \ VARIANT1_2(p + 1); \
@ -1245,9 +1249,9 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
RDATA_ALIGN16 uint8_t expandedKey[240]; RDATA_ALIGN16 uint8_t expandedKey[240];
#ifndef FORCE_USE_HEAP #ifndef FORCE_USE_HEAP
RDATA_ALIGN16 uint8_t hp_state[MEMORY]; RDATA_ALIGN16 uint8_t local_hp_state[MEMORY];
#else #else
uint8_t *hp_state = (uint8_t *)aligned_malloc(MEMORY,16); uint8_t *local_hp_state = (uint8_t *)aligned_malloc(MEMORY,16);
#endif #endif
uint8_t text[INIT_SIZE_BYTE]; uint8_t text[INIT_SIZE_BYTE];
@ -1287,7 +1291,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
{ {
aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK); aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE); memcpy(&local_hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
} }
U64(a)[0] = U64(&state.k[0])[0] ^ U64(&state.k[32])[0]; U64(a)[0] = U64(&state.k[0])[0] ^ U64(&state.k[32])[0];
@ -1322,7 +1326,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
{ {
// add the xor to the pseudo round // add the xor to the pseudo round
aes_pseudo_round_xor(text, text, expandedKey, &hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK); aes_pseudo_round_xor(text, text, expandedKey, &local_hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
} }
/* CryptoNight Step 5: Apply Keccak to the state again, and then /* CryptoNight Step 5: Apply Keccak to the state again, and then
@ -1337,7 +1341,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
extra_hashes[state.hs.b[0] & 3](&state, 200, hash); extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
#ifdef FORCE_USE_HEAP #ifdef FORCE_USE_HEAP
aligned_free(hp_state); aligned_free(local_hp_state);
#endif #endif
} }
#else /* aarch64 && crypto */ #else /* aarch64 && crypto */