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slow_hash: don't blow out Mac stack on ARM64
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@ -51,6 +51,12 @@
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#define INIT_SIZE_BLK 8
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#define INIT_SIZE_BYTE (INIT_SIZE_BLK * AES_BLOCK_SIZE)
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#if defined(_MSC_VER)
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#define THREADV __declspec(thread)
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#else
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#define THREADV __thread
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#endif
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extern void aesb_single_round(const uint8_t *in, uint8_t *out, const uint8_t *expandedKey);
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extern void aesb_pseudo_round(const uint8_t *in, uint8_t *out, const uint8_t *expandedKey);
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@ -459,12 +465,6 @@ static inline int force_software_aes(void)
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_b1 = _b; \
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_b = _c; \
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#if defined(_MSC_VER)
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#define THREADV __declspec(thread)
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#else
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#define THREADV __thread
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#endif
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#pragma pack(push, 1)
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union cn_slow_hash_state
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{
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@ -1012,6 +1012,44 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
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}
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#elif !defined NO_AES && (defined(__arm__) || defined(__aarch64__))
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#ifdef __aarch64__
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#include <sys/mman.h>
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THREADV uint8_t *hp_state = NULL;
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THREADV int hp_malloced = 0;
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void cn_slow_hash_allocate_state(void)
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{
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if(hp_state != NULL)
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return;
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#ifndef MAP_HUGETLB
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#define MAP_HUGETLB 0
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#endif
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hp_state = mmap(0, MEMORY, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANON | MAP_HUGETLB, -1, 0);
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if(hp_state == MAP_FAILED)
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hp_state = NULL;
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if(hp_state == NULL)
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{
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hp_malloced = 1;
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hp_state = (uint8_t *) malloc(MEMORY);
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}
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}
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void cn_slow_hash_free_state(void)
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{
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if(hp_state == NULL)
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return;
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if (hp_malloced)
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free(hp_state);
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else
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munmap(hp_state, MEMORY);
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hp_state = NULL;
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hp_malloced = 0;
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}
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#else
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void cn_slow_hash_allocate_state(void)
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{
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// Do nothing, this is just to maintain compatibility with the upgraded slow-hash.c
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@ -1023,6 +1061,7 @@ void cn_slow_hash_free_state(void)
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// As above
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return;
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}
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#endif
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#if defined(__GNUC__)
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#define RDATA_ALIGN16 __attribute__ ((aligned(16)))
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@ -1272,12 +1311,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
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{
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RDATA_ALIGN16 uint8_t expandedKey[240];
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#ifndef FORCE_USE_HEAP
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RDATA_ALIGN16 uint8_t local_hp_state[MEMORY];
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#else
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uint8_t *local_hp_state = (uint8_t *)aligned_malloc(MEMORY,16);
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#endif
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uint8_t *local_hp_state;
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uint8_t text[INIT_SIZE_BYTE];
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RDATA_ALIGN16 uint64_t a[2];
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RDATA_ALIGN16 uint64_t b[4];
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@ -1296,6 +1330,14 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
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hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
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};
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// this isn't supposed to happen, but guard against it for now.
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if(hp_state == NULL)
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cn_slow_hash_allocate_state();
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// locals to avoid constant TLS dereferencing
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local_hp_state = hp_state;
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// locals to avoid constant TLS dereferencing
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/* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */
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if (prehashed) {
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@ -1409,10 +1451,6 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int
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memcpy(state.init, text, INIT_SIZE_BYTE);
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hash_permutation(&state.hs);
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extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
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#ifdef FORCE_USE_HEAP
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aligned_free(local_hp_state);
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#endif
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}
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#else /* aarch64 && crypto */
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