PurpleI2P/i2pd
1
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-01-08 22:57:52 +00:00
Code Issues Releases Activity

restore BlockCipher XOR using SSE

Browse Source
This commit is contained in:
orignal 2018-11-24 09:43:30 -05:00
parent cde989b59d
commit f7e9975192
1 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libi2pd/Crypto.h
View File

@ -125,6 +125,18 @@ namespace crypto
else else
#endif #endif
{ {
#if defined(__SSE__) // SSE
__asm__
(
"movups (%[buf]), %%xmm0 \n"
"movups (%[other]), %%xmm1 \n"
"pxor %%xmm1, %%xmm0 \n"
"movups %%xmm0, (%[buf]) \n"
:
: [buf]"r"(buf), [other]"r"(other.buf)
: "%xmm0", "%xmm1", "memory"
);
#else
if (!(((size_t)buf | (size_t)other.buf) & 0x03)) // multiple of 4 ? if (!(((size_t)buf | (size_t)other.buf) & 0x03)) // multiple of 4 ?
{ {
// we are good to cast to uint32_t * // we are good to cast to uint32_t *
@ -136,6 +148,7 @@ namespace crypto
for (int i = 0; i < 16; i++) for (int i = 0; i < 16; i++)
buf[i] ^= other.buf[i]; buf[i] ^= other.buf[i];
} }
#endif
} }
} }
}; };