diff options
Diffstat (limited to 'libbb/hash_sha1_hwaccel_x86-64.S')
| -rw-r--r-- | libbb/hash_sha1_hwaccel_x86-64.S | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/libbb/hash_sha1_hwaccel_x86-64.S b/libbb/hash_sha1_hwaccel_x86-64.S new file mode 100644 index 000000000..2f03e1ce4 --- /dev/null +++ b/libbb/hash_sha1_hwaccel_x86-64.S @@ -0,0 +1,232 @@ +#if ENABLE_SHA1_HWACCEL && defined(__GNUC__) && defined(__x86_64__) +/* The code is adapted from Linux kernel's source */ + +// We use shorter insns, even though they are for "wrong" +// data type (fp, not int). +// For Intel, there is no penalty for doing it at all +// (CPUs which do have such penalty do not support SHA insns). +// For AMD, the penalty is one extra cycle +// (allegedly: I failed to find measurable difference). + +//#define mova128 movdqa +#define mova128 movaps +//#define movu128 movdqu +#define movu128 movups +//#define xor128 pxor +#define xor128 xorps +//#define shuf128_32 pshufd +#define shuf128_32 shufps + +#define extr128_32 pextrd +//#define extr128_32 extractps # not shorter + +// pshufb is a SSSE3 insn. +// pinsrd, pextrd, extractps are SSE4.1 insns. +// We do not check SSSE3/SSE4.1 in cpuid, +// all SHA-capable CPUs support them as well. + +#ifdef __linux__ + .section .note.GNU-stack, "", @progbits +#endif + .section .text.sha1_process_block64_shaNI, "ax", @progbits + .globl sha1_process_block64_shaNI + .hidden sha1_process_block64_shaNI + .type sha1_process_block64_shaNI, @function + +#define ABCD %xmm0 +#define E0 %xmm1 /* Need two E's b/c they ping pong */ +#define E1 %xmm2 +#define MSG0 %xmm3 +#define MSG1 %xmm4 +#define MSG2 %xmm5 +#define MSG3 %xmm6 + + .balign 8 # allow decoders to fetch at least 2 first insns +sha1_process_block64_shaNI: + /* load initial hash values */ + movu128 80(%rdi), ABCD + xor128 E0, E0 + pinsrd $3, 80+4*4(%rdi), E0 # load to uppermost 32-bit word + shuf128_32 $0x1B, ABCD, ABCD # DCBA -> ABCD + + mova128 PSHUFFLE_BYTE_FLIP_MASK(%rip), %xmm7 + + movu128 0*16(%rdi), MSG0 + pshufb %xmm7, MSG0 + movu128 1*16(%rdi), MSG1 + pshufb %xmm7, MSG1 + movu128 2*16(%rdi), MSG2 + pshufb %xmm7, MSG2 + movu128 3*16(%rdi), MSG3 + pshufb %xmm7, MSG3 + + /* Save hash values for addition after rounds */ + mova128 E0, %xmm7 + mova128 ABCD, %xmm8 + + /* Rounds 0-3 */ + paddd MSG0, E0 + mova128 ABCD, E1 + sha1rnds4 $0, E0, ABCD + + /* Rounds 4-7 */ + sha1nexte MSG1, E1 + mova128 ABCD, E0 + sha1rnds4 $0, E1, ABCD + sha1msg1 MSG1, MSG0 + + /* Rounds 8-11 */ + sha1nexte MSG2, E0 + mova128 ABCD, E1 + sha1rnds4 $0, E0, ABCD + sha1msg1 MSG2, MSG1 + xor128 MSG2, MSG0 + + /* Rounds 12-15 */ + sha1nexte MSG3, E1 + mova128 ABCD, E0 + sha1msg2 MSG3, MSG0 + sha1rnds4 $0, E1, ABCD + sha1msg1 MSG3, MSG2 + xor128 MSG3, MSG1 + + /* Rounds 16-19 */ + sha1nexte MSG0, E0 + mova128 ABCD, E1 + sha1msg2 MSG0, MSG1 + sha1rnds4 $0, E0, ABCD + sha1msg1 MSG0, MSG3 + xor128 MSG0, MSG2 + + /* Rounds 20-23 */ + sha1nexte MSG1, E1 + mova128 ABCD, E0 + sha1msg2 MSG1, MSG2 + sha1rnds4 $1, E1, ABCD + sha1msg1 MSG1, MSG0 + xor128 MSG1, MSG3 + + /* Rounds 24-27 */ + sha1nexte MSG2, E0 + mova128 ABCD, E1 + sha1msg2 MSG2, MSG3 + sha1rnds4 $1, E0, ABCD + sha1msg1 MSG2, MSG1 + xor128 MSG2, MSG0 + + /* Rounds 28-31 */ + sha1nexte MSG3, E1 + mova128 ABCD, E0 + sha1msg2 MSG3, MSG0 + sha1rnds4 $1, E1, ABCD + sha1msg1 MSG3, MSG2 + xor128 MSG3, MSG1 + + /* Rounds 32-35 */ + sha1nexte MSG0, E0 + mova128 ABCD, E1 + sha1msg2 MSG0, MSG1 + sha1rnds4 $1, E0, ABCD + sha1msg1 MSG0, MSG3 + xor128 MSG0, MSG2 + + /* Rounds 36-39 */ + sha1nexte MSG1, E1 + mova128 ABCD, E0 + sha1msg2 MSG1, MSG2 + sha1rnds4 $1, E1, ABCD + sha1msg1 MSG1, MSG0 + xor128 MSG1, MSG3 + + /* Rounds 40-43 */ + sha1nexte MSG2, E0 + mova128 ABCD, E1 + sha1msg2 MSG2, MSG3 + sha1rnds4 $2, E0, ABCD + sha1msg1 MSG2, MSG1 + xor128 MSG2, MSG0 + + /* Rounds 44-47 */ + sha1nexte MSG3, E1 + mova128 ABCD, E0 + sha1msg2 MSG3, MSG0 + sha1rnds4 $2, E1, ABCD + sha1msg1 MSG3, MSG2 + xor128 MSG3, MSG1 + + /* Rounds 48-51 */ + sha1nexte MSG0, E0 + mova128 ABCD, E1 + sha1msg2 MSG0, MSG1 + sha1rnds4 $2, E0, ABCD + sha1msg1 MSG0, MSG3 + xor128 MSG0, MSG2 + + /* Rounds 52-55 */ + sha1nexte MSG1, E1 + mova128 ABCD, E0 + sha1msg2 MSG1, MSG2 + sha1rnds4 $2, E1, ABCD + sha1msg1 MSG1, MSG0 + xor128 MSG1, MSG3 + + /* Rounds 56-59 */ + sha1nexte MSG2, E0 + mova128 ABCD, E1 + sha1msg2 MSG2, MSG3 + sha1rnds4 $2, E0, ABCD + sha1msg1 MSG2, MSG1 + xor128 MSG2, MSG0 + + /* Rounds 60-63 */ + sha1nexte MSG3, E1 + mova128 ABCD, E0 + sha1msg2 MSG3, MSG0 + sha1rnds4 $3, E1, ABCD + sha1msg1 MSG3, MSG2 + xor128 MSG3, MSG1 + + /* Rounds 64-67 */ + sha1nexte MSG0, E0 + mova128 ABCD, E1 + sha1msg2 MSG0, MSG1 + sha1rnds4 $3, E0, ABCD + sha1msg1 MSG0, MSG3 + xor128 MSG0, MSG2 + + /* Rounds 68-71 */ + sha1nexte MSG1, E1 + mova128 ABCD, E0 + sha1msg2 MSG1, MSG2 + sha1rnds4 $3, E1, ABCD + xor128 MSG1, MSG3 + + /* Rounds 72-75 */ + sha1nexte MSG2, E0 + mova128 ABCD, E1 + sha1msg2 MSG2, MSG3 + sha1rnds4 $3, E0, ABCD + + /* Rounds 76-79 */ + sha1nexte MSG3, E1 + mova128 ABCD, E0 + sha1rnds4 $3, E1, ABCD + + /* Add current hash values with previously saved */ + sha1nexte %xmm7, E0 + paddd %xmm8, ABCD + + /* Write hash values back in the correct order */ + shuf128_32 $0x1B, ABCD, ABCD + movu128 ABCD, 80(%rdi) + extr128_32 $3, E0, 80+4*4(%rdi) + + ret + .size sha1_process_block64_shaNI, .-sha1_process_block64_shaNI + + .section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16 + .balign 16 +PSHUFFLE_BYTE_FLIP_MASK: + .octa 0x000102030405060708090a0b0c0d0e0f + +#endif |