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#if ENABLE_SHA256_HWACCEL && defined(__GNUC__) && defined(__i386__)
/* 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 shuf128_32 pshufd
#define shuf128_32 shufps
// pshufb and palignr are SSSE3 insns.
// We do not check SSSE3 in cpuid,
// all SHA-capable CPUs support it as well.
.section .text.sha256_process_block64_shaNI, "ax", @progbits
.globl sha256_process_block64_shaNI
.hidden sha256_process_block64_shaNI
.type sha256_process_block64_shaNI, @function
#define DATA_PTR %eax
#define SHA256CONSTANTS %ecx
#define MSG %xmm0
#define STATE0 %xmm1
#define STATE1 %xmm2
#define MSGTMP0 %xmm3
#define MSGTMP1 %xmm4
#define MSGTMP2 %xmm5
#define MSGTMP3 %xmm6
#define XMMTMP %xmm7
#define SHUF(a,b,c,d) $(a+(b<<2)+(c<<4)+(d<<6))
.balign 8 # allow decoders to fetch at least 2 first insns
sha256_process_block64_shaNI:
movu128 76+0*16(%eax), XMMTMP /* ABCD (little-endian dword order) */
movu128 76+1*16(%eax), STATE1 /* EFGH */
/* shufps takes dwords 0,1 from *2nd* operand, and dwords 2,3 from 1st one */
mova128 STATE1, STATE0
/* --- -------------- ABCD -- EFGH */
shufps SHUF(1,0,1,0), XMMTMP, STATE0 /* FEBA */
shufps SHUF(3,2,3,2), XMMTMP, STATE1 /* HGDC */
/* XMMTMP holds flip mask from here... */
mova128 PSHUFFLE_BSWAP32_FLIP_MASK, XMMTMP
movl $K256+8*16, SHA256CONSTANTS
/* Rounds 0-3 */
movu128 0*16(DATA_PTR), MSG
pshufb XMMTMP, MSG
mova128 MSG, MSGTMP0
paddd 0*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
/* Rounds 4-7 */
movu128 1*16(DATA_PTR), MSG
pshufb XMMTMP, MSG
mova128 MSG, MSGTMP1
paddd 1*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 8-11 */
movu128 2*16(DATA_PTR), MSG
pshufb XMMTMP, MSG
mova128 MSG, MSGTMP2
paddd 2*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 12-15 */
movu128 3*16(DATA_PTR), MSG
pshufb XMMTMP, MSG
/* ...to here */
mova128 MSG, MSGTMP3
paddd 3*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP3, XMMTMP
palignr $4, MSGTMP2, XMMTMP
paddd XMMTMP, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 16-19 */
mova128 MSGTMP0, MSG
paddd 4*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP0, XMMTMP
palignr $4, MSGTMP3, XMMTMP
paddd XMMTMP, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 20-23 */
mova128 MSGTMP1, MSG
paddd 5*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP1, XMMTMP
palignr $4, MSGTMP0, XMMTMP
paddd XMMTMP, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 24-27 */
mova128 MSGTMP2, MSG
paddd 6*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP2, XMMTMP
palignr $4, MSGTMP1, XMMTMP
paddd XMMTMP, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 28-31 */
mova128 MSGTMP3, MSG
paddd 7*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP3, XMMTMP
palignr $4, MSGTMP2, XMMTMP
paddd XMMTMP, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 32-35 */
mova128 MSGTMP0, MSG
paddd 8*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP0, XMMTMP
palignr $4, MSGTMP3, XMMTMP
paddd XMMTMP, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 36-39 */
mova128 MSGTMP1, MSG
paddd 9*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP1, XMMTMP
palignr $4, MSGTMP0, XMMTMP
paddd XMMTMP, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 40-43 */
mova128 MSGTMP2, MSG
paddd 10*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP2, XMMTMP
palignr $4, MSGTMP1, XMMTMP
paddd XMMTMP, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 44-47 */
mova128 MSGTMP3, MSG
paddd 11*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP3, XMMTMP
palignr $4, MSGTMP2, XMMTMP
paddd XMMTMP, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 48-51 */
mova128 MSGTMP0, MSG
paddd 12*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP0, XMMTMP
palignr $4, MSGTMP3, XMMTMP
paddd XMMTMP, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 52-55 */
mova128 MSGTMP1, MSG
paddd 13*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP1, XMMTMP
palignr $4, MSGTMP0, XMMTMP
paddd XMMTMP, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
/* Rounds 56-59 */
mova128 MSGTMP2, MSG
paddd 14*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
mova128 MSGTMP2, XMMTMP
palignr $4, MSGTMP1, XMMTMP
paddd XMMTMP, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
/* Rounds 60-63 */
mova128 MSGTMP3, MSG
paddd 15*16-8*16(SHA256CONSTANTS), MSG
sha256rnds2 MSG, STATE0, STATE1
shuf128_32 $0x0E, MSG, MSG
sha256rnds2 MSG, STATE1, STATE0
/* Write hash values back in the correct order */
mova128 STATE0, XMMTMP
/* shufps takes dwords 0,1 from *2nd* operand, and dwords 2,3 from 1st one */
/* --- -------------- HGDC -- FEBA */
shufps SHUF(3,2,3,2), STATE1, STATE0 /* ABCD */
shufps SHUF(1,0,1,0), STATE1, XMMTMP /* EFGH */
/* add current hash values to previous ones */
movu128 76+1*16(%eax), STATE1
paddd XMMTMP, STATE1
movu128 STATE1, 76+1*16(%eax)
movu128 76+0*16(%eax), XMMTMP
paddd XMMTMP, STATE0
movu128 STATE0, 76+0*16(%eax)
ret
.size sha256_process_block64_shaNI, .-sha256_process_block64_shaNI
.section .rodata.cst256.K256, "aM", @progbits, 256
.balign 16
K256:
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
.section .rodata.cst16.PSHUFFLE_BSWAP32_FLIP_MASK, "aM", @progbits, 16
.balign 16
PSHUFFLE_BSWAP32_FLIP_MASK:
.octa 0x0c0d0e0f08090a0b0405060700010203
#endif
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