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ethminer
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Started minor refactor - still API compatible though.

cl-refactor
Gav Wood 10 years ago
parent
1a93beb7e1
commit
2ad558b9a9
5 changed files with 58 additions and 44 deletions
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  1. 7
      libethash/CMakeLists.txt
  2. 4
      libethash/data_sizes.h
  3. 75
      libethash/ethash.h
  4. 14
      libethash/internal.c
  5. 2
      libethash/internal.h

7
libethash/CMakeLists.txt
View File

@ -12,6 +12,7 @@ endif()
set(FILES util.c
util.h
io.c
internal.c
ethash.h
endian.h
@ -19,6 +20,12 @@ set(FILES util.c
fnv.h
data_sizes.h)
if (MSVC)
list(APPEND FILES io_win32.c)
else()
list(APPEND FILES io_posix.c)
endif()
if (NOT CRYPTOPP_FOUND)
find_package(CryptoPP 5.6.2)
endif()

4
libethash/data_sizes.h
View File

@ -48,7 +48,7 @@ extern "C" {
// Sow[i*HashBytes]; j++]]]][[2]][[1]]
static const size_t dag_sizes[2048] = {
static const uint64_t dag_sizes[2048] = {
1073739904U, 1082130304U, 1090514816U, 1098906752U, 1107293056U,
1115684224U, 1124070016U, 1132461952U, 1140849536U, 1149232768U,
1157627776U, 1166013824U, 1174404736U, 1182786944U, 1191180416U,
@ -477,7 +477,7 @@ static const size_t dag_sizes[2048] = {
// While[! PrimeQ[i], i--];
// Sow[i*HashBytes]; j++]]]][[2]][[1]]
const size_t cache_sizes[2048] = {
const uint64_t cache_sizes[2048] = {
16776896U, 16907456U, 17039296U, 17170112U, 17301056U, 17432512U, 17563072U,
17693888U, 17824192U, 17955904U, 18087488U, 18218176U, 18349504U, 18481088U,
18611392U, 18742336U, 18874304U, 19004224U, 19135936U, 19267264U, 19398208U,

75
libethash/ethash.h
View File

@ -43,26 +43,26 @@ extern "C" {
#endif
typedef struct ethash_params {
size_t full_size; // Size of full data set (in bytes, multiple of mix size (128)).
size_t cache_size; // Size of compute cache (in bytes, multiple of node size (64)).
uint64_t full_size; // Size of full data set (in bytes, multiple of mix size (128)).
uint64_t cache_size; // Size of compute cache (in bytes, multiple of node size (64)).
} ethash_params;
typedef struct ethash_return_value {
uint8_t result[32];
uint8_t mix_hash[32];
uint8_t result[32];
uint8_t mix_hash[32];
} ethash_return_value;
size_t ethash_get_datasize(const uint32_t block_number);
size_t ethash_get_cachesize(const uint32_t block_number);
uint64_t ethash_get_datasize(const uint32_t block_number);
uint64_t ethash_get_cachesize(const uint32_t block_number);
// initialize the parameters
static inline void ethash_params_init(ethash_params *params, const uint32_t block_number) {
params->full_size = ethash_get_datasize(block_number);
params->cache_size = ethash_get_cachesize(block_number);
params->full_size = ethash_get_datasize(block_number);
params->cache_size = ethash_get_cachesize(block_number);
}
typedef struct ethash_cache {
void *mem;
void *mem;
} ethash_cache;
void ethash_mkcache(ethash_cache *cache, ethash_params const *params, const uint8_t seed[32]);
@ -72,44 +72,51 @@ void ethash_light(ethash_return_value *ret, ethash_cache const *cache, ethash_pa
void ethash_get_seedhash(uint8_t seedhash[32], const uint32_t block_number);
static inline void ethash_prep_light(void *cache, ethash_params const *params, const uint8_t seed[32]) {
ethash_cache c;
c.mem = cache;
ethash_mkcache(&c, params, seed);
ethash_cache c;
c.mem = cache;
ethash_mkcache(&c, params, seed);
}
static inline void ethash_compute_light(ethash_return_value *ret, void const *cache, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) {
ethash_cache c;
c.mem = (void *) cache;
ethash_light(ret, &c, params, header_hash, nonce);
ethash_cache c;
c.mem = (void *) cache;
ethash_light(ret, &c, params, header_hash, nonce);
}
static inline void ethash_prep_full(void *full, ethash_params const *params, void const *cache) {
ethash_cache c;
c.mem = (void *) cache;
ethash_compute_full_data(full, params, &c);
ethash_cache c;
c.mem = (void *) cache;
ethash_compute_full_data(full, params, &c);
}
static inline void ethash_compute_full(ethash_return_value *ret, void const *full, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce) {
ethash_full(ret, full, params, header_hash, nonce);
ethash_full(ret, full, params, header_hash, nonce);
}
// Returns if hash is less than or equal to difficulty
static inline int ethash_check_difficulty(
const uint8_t hash[32],
const uint8_t difficulty[32]) {
// Difficulty is big endian
for (int i = 0; i < 32; i++) {
if (hash[i] == difficulty[i]) continue;
return hash[i] < difficulty[i];
}
return 1;
/// @brief Compare two s256-bit big-endian values.
/// @returns 1 if @a a is less than or equal to @a b, 0 otherwise.
/// Both parameters are 256-bit big-endian values.
static inline int ethash_leq_be256(const uint8_t a[32], const uint8_t b[32]) {
// Boundary is big endian
for (int i = 0; i < 32; i++) {
if (a[i] == b[i])
continue;
return a[i] < b[i];
}
return 1;
}
int ethash_quick_check_difficulty(
const uint8_t header_hash[32],
const uint64_t nonce,
const uint8_t mix_hash[32],
const uint8_t difficulty[32]);
/// Perofrms a cursory check on the validity of the nonce.
/// @returns 1 if the nonce may possibly be valid for the given header_hash & boundary.
/// @p boundary equivalent to 2 ^ 256 / block_difficulty, represented as a 256-bit big-endian.
int ethash_preliminary_check_boundary(
const uint8_t header_hash[32],
const uint64_t nonce,
const uint8_t mix_hash[32],
const uint8_t boundary[32]);
#define ethash_quick_check_difficulty ethash_preliminary_check_boundary
#define ethash_check_difficulty ethash_leq_be256
#ifdef __cplusplus
}

14
libethash/internal.c
View File

@ -37,12 +37,12 @@
#include "sha3.h"
#endif // WITH_CRYPTOPP
size_t ethash_get_datasize(const uint32_t block_number) {
uint64_t ethash_get_datasize(const uint32_t block_number) {
assert(block_number / EPOCH_LENGTH < 2048);
return dag_sizes[block_number / EPOCH_LENGTH];
}
size_t ethash_get_cachesize(const uint32_t block_number) {
uint64_t ethash_get_cachesize(const uint32_t block_number) {
assert(block_number / EPOCH_LENGTH < 2048);
return cache_sizes[block_number / EPOCH_LENGTH];
}
@ -280,15 +280,15 @@ void ethash_get_seedhash(uint8_t seedhash[32], const uint32_t block_number) {
SHA3_256(seedhash, seedhash, 32);
}
int ethash_quick_check_difficulty(
int ethash_preliminary_check_boundary(
const uint8_t header_hash[32],
const uint64_t nonce,
const uint8_t mix_hash[32],
const uint8_t difficulty[32]) {
const uint8_t difficulty[32]) {
uint8_t return_hash[32];
uint8_t return_hash[32];
ethash_quick_hash(return_hash, header_hash, nonce, mix_hash);
return ethash_check_difficulty(return_hash, difficulty);
return ethash_leq_be256(return_hash, difficulty);
}
void ethash_full(ethash_return_value *ret, void const *full_mem, ethash_params const *params, const uint8_t previous_hash[32], const uint64_t nonce) {
@ -297,4 +297,4 @@ void ethash_full(ethash_return_value *ret, void const *full_mem, ethash_params c
void ethash_light(ethash_return_value *ret, ethash_cache const *cache, ethash_params const *params, const uint8_t previous_hash[32], const uint64_t nonce) {
ethash_hash(ret, NULL, cache, params, previous_hash, nonce);
}
}

2
libethash/internal.h
View File

@ -3,7 +3,7 @@
#include "endian.h"
#include "ethash.h"
#define ENABLE_SSE 1
#define ENABLE_SSE 0
#if defined(_M_X64) && ENABLE_SSE
#include <smmintrin.h>

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