bitcoin/libblkmaker
bitcoin/libblkmaker
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Merge integer unpacking code

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This commit is contained in:
Luke Dashjr 2016-07-26 02:51:12 +00:00
commit 1cf20a8348
2 changed files with 61 additions and 29 deletions
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58
blkmaker.c
View File

@ -49,6 +49,35 @@ bool _blkmk_dblsha256(void *hash, const void *data, size_t datasz) {
#define max_varint_size (9)
static
char varintEncode(unsigned char *out, uint64_t n) {
if (n < 0xfd)
{
out[0] = n;
return 1;
}
char L;
if (n <= 0xffff)
{
out[0] = '\xfd';
L = 3;
}
else
if (n <= 0xffffffff)
{
out[0] = '\xfe';
L = 5;
}
else
{
out[0] = '\xff';
L = 9;
}
for (unsigned char i = 1; i < L; ++i)
out[i] = (n >> ((i - 1) * 8)) % 256;
return L;
}
uint64_t blkmk_init_generation3(blktemplate_t * const tmpl, const void * const script, const size_t scriptsz, bool * const inout_newcb) {
if (tmpl->cbtxn && !(*inout_newcb && (tmpl->mutations & BMM_GENERATE)))
{
@ -473,35 +502,6 @@ unsigned long blkmk_work_left(const blktemplate_t *tmpl) {
return BLKMK_UNLIMITED_WORK_COUNT;
}
static
char varintEncode(unsigned char *out, uint64_t n) {
if (n < 0xfd)
{
out[0] = n;
return 1;
}
char L;
if (n <= 0xffff)
{
out[0] = '\xfd';
L = 3;
}
else
if (n <= 0xffffffff)
{
out[0] = '\xfe';
L = 5;
}
else
{
out[0] = '\xff';
L = 9;
}
for (unsigned char i = 1; i < L; ++i)
out[i] = (n >> ((i - 1) * 8)) % 256;
return L;
}
static char *blkmk_assemble_submission2_internal(blktemplate_t * const tmpl, const unsigned char * const data, const void * const extranonce, const size_t extranoncesz, blknonce_t nonce, const bool foreign)
{
const bool incl_gentxn = (foreign || (!(tmpl->mutations & BMAb_TRUNCATE && !extranoncesz)));

32
private.h
View File

@ -27,4 +27,36 @@ int blkmk_flsl(unsigned long n)
return i;
}
static inline
uint16_t upk_u16le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint16_t)buf[offset+0]) << 0)
| (((uint16_t)buf[offset+1]) << 8);
}
static inline
uint32_t upk_u32le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint32_t)buf[offset+0]) << 0)
| (((uint32_t)buf[offset+1]) << 8)
| (((uint32_t)buf[offset+2]) << 0x10)
| (((uint32_t)buf[offset+3]) << 0x18);
}
static inline
uint64_t upk_u64le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint64_t)buf[offset+0]) << 0)
| (((uint64_t)buf[offset+1]) << 8)
| (((uint64_t)buf[offset+2]) << 0x10)
| (((uint64_t)buf[offset+3]) << 0x18)
| (((uint64_t)buf[offset+4]) << 0x20)
| (((uint64_t)buf[offset+5]) << 0x28)
| (((uint64_t)buf[offset+6]) << 0x30)
| (((uint64_t)buf[offset+7]) << 0x38);
}
#endif