284 lines
7.8 KiB
ArmAsm
284 lines
7.8 KiB
ArmAsm
#if ENABLE_SHA256_HWACCEL && defined(__GNUC__) && defined(__x86_64__)
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/* The code is adapted from Linux kernel's source */
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// We use shorter insns, even though they are for "wrong"
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// data type (fp, not int).
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// For Intel, there is no penalty for doing it at all
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// (CPUs which do have such penalty do not support SHA insns).
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// For AMD, the penalty is one extra cycle
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// (allegedly: I failed to find measurable difference).
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//#define mova128 movdqa
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#define mova128 movaps
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//#define movu128 movdqu
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#define movu128 movups
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//#define shuf128_32 pshufd
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#define shuf128_32 shufps
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.section .text.sha256_process_block64_shaNI, "ax", @progbits
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.globl sha256_process_block64_shaNI
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.hidden sha256_process_block64_shaNI
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.type sha256_process_block64_shaNI, @function
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#define DATA_PTR %rdi
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#define SHA256CONSTANTS %rax
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#define MSG %xmm0
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#define STATE0 %xmm1
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#define STATE1 %xmm2
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#define MSGTMP0 %xmm3
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#define MSGTMP1 %xmm4
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#define MSGTMP2 %xmm5
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#define MSGTMP3 %xmm6
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#define XMMTMP %xmm7
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#define ABEF_SAVE %xmm9
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#define CDGH_SAVE %xmm10
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#define SHUF(a,b,c,d) $(a+(b<<2)+(c<<4)+(d<<6))
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.balign 8 # allow decoders to fetch at least 2 first insns
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sha256_process_block64_shaNI:
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movu128 80+0*16(%rdi), XMMTMP /* ABCD (little-endian dword order) */
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movu128 80+1*16(%rdi), STATE1 /* EFGH */
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/* shufps takes dwords 0,1 from *2nd* operand, and dwords 2,3 from 1st one */
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mova128 STATE1, STATE0
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/* --- -------------- ABCD -- EFGH */
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shufps SHUF(1,0,1,0), XMMTMP, STATE0 /* FEBA */
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shufps SHUF(3,2,3,2), XMMTMP, STATE1 /* HGDC */
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/* XMMTMP holds flip mask from here... */
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mova128 PSHUFFLE_BSWAP32_FLIP_MASK(%rip), XMMTMP
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leaq K256+8*16(%rip), SHA256CONSTANTS
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/* Save hash values for addition after rounds */
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mova128 STATE0, ABEF_SAVE
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mova128 STATE1, CDGH_SAVE
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/* Rounds 0-3 */
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movu128 0*16(DATA_PTR), MSG
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pshufb XMMTMP, MSG
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mova128 MSG, MSGTMP0
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paddd 0*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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/* Rounds 4-7 */
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movu128 1*16(DATA_PTR), MSG
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pshufb XMMTMP, MSG
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mova128 MSG, MSGTMP1
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paddd 1*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP1, MSGTMP0
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/* Rounds 8-11 */
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movu128 2*16(DATA_PTR), MSG
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pshufb XMMTMP, MSG
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mova128 MSG, MSGTMP2
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paddd 2*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP2, MSGTMP1
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/* Rounds 12-15 */
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movu128 3*16(DATA_PTR), MSG
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pshufb XMMTMP, MSG
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/* ...to here */
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mova128 MSG, MSGTMP3
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paddd 3*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP3, XMMTMP
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palignr $4, MSGTMP2, XMMTMP
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paddd XMMTMP, MSGTMP0
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sha256msg2 MSGTMP3, MSGTMP0
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP3, MSGTMP2
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/* Rounds 16-19 */
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mova128 MSGTMP0, MSG
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paddd 4*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP0, XMMTMP
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palignr $4, MSGTMP3, XMMTMP
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paddd XMMTMP, MSGTMP1
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sha256msg2 MSGTMP0, MSGTMP1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP0, MSGTMP3
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/* Rounds 20-23 */
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mova128 MSGTMP1, MSG
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paddd 5*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP1, XMMTMP
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palignr $4, MSGTMP0, XMMTMP
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paddd XMMTMP, MSGTMP2
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sha256msg2 MSGTMP1, MSGTMP2
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP1, MSGTMP0
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/* Rounds 24-27 */
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mova128 MSGTMP2, MSG
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paddd 6*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP2, XMMTMP
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palignr $4, MSGTMP1, XMMTMP
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paddd XMMTMP, MSGTMP3
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sha256msg2 MSGTMP2, MSGTMP3
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP2, MSGTMP1
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/* Rounds 28-31 */
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mova128 MSGTMP3, MSG
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paddd 7*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP3, XMMTMP
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palignr $4, MSGTMP2, XMMTMP
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paddd XMMTMP, MSGTMP0
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sha256msg2 MSGTMP3, MSGTMP0
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP3, MSGTMP2
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/* Rounds 32-35 */
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mova128 MSGTMP0, MSG
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paddd 8*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP0, XMMTMP
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palignr $4, MSGTMP3, XMMTMP
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paddd XMMTMP, MSGTMP1
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sha256msg2 MSGTMP0, MSGTMP1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP0, MSGTMP3
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/* Rounds 36-39 */
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mova128 MSGTMP1, MSG
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paddd 9*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP1, XMMTMP
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palignr $4, MSGTMP0, XMMTMP
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paddd XMMTMP, MSGTMP2
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sha256msg2 MSGTMP1, MSGTMP2
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP1, MSGTMP0
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/* Rounds 40-43 */
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mova128 MSGTMP2, MSG
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paddd 10*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP2, XMMTMP
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palignr $4, MSGTMP1, XMMTMP
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paddd XMMTMP, MSGTMP3
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sha256msg2 MSGTMP2, MSGTMP3
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP2, MSGTMP1
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/* Rounds 44-47 */
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mova128 MSGTMP3, MSG
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paddd 11*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP3, XMMTMP
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palignr $4, MSGTMP2, XMMTMP
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paddd XMMTMP, MSGTMP0
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sha256msg2 MSGTMP3, MSGTMP0
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP3, MSGTMP2
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/* Rounds 48-51 */
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mova128 MSGTMP0, MSG
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paddd 12*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP0, XMMTMP
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palignr $4, MSGTMP3, XMMTMP
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paddd XMMTMP, MSGTMP1
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sha256msg2 MSGTMP0, MSGTMP1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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sha256msg1 MSGTMP0, MSGTMP3
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/* Rounds 52-55 */
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mova128 MSGTMP1, MSG
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paddd 13*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP1, XMMTMP
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palignr $4, MSGTMP0, XMMTMP
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paddd XMMTMP, MSGTMP2
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sha256msg2 MSGTMP1, MSGTMP2
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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/* Rounds 56-59 */
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mova128 MSGTMP2, MSG
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paddd 14*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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mova128 MSGTMP2, XMMTMP
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palignr $4, MSGTMP1, XMMTMP
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paddd XMMTMP, MSGTMP3
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sha256msg2 MSGTMP2, MSGTMP3
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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/* Rounds 60-63 */
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mova128 MSGTMP3, MSG
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paddd 15*16-8*16(SHA256CONSTANTS), MSG
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sha256rnds2 STATE0, STATE1
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shuf128_32 $0x0E, MSG, MSG
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sha256rnds2 STATE1, STATE0
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/* Add current hash values with previously saved */
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paddd ABEF_SAVE, STATE0
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paddd CDGH_SAVE, STATE1
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/* Write hash values back in the correct order */
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mova128 STATE0, XMMTMP
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/* shufps takes dwords 0,1 from *2nd* operand, and dwords 2,3 from 1st one */
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/* --- -------------- HGDC -- FEBA */
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shufps SHUF(3,2,3,2), STATE1, STATE0 /* ABCD */
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shufps SHUF(1,0,1,0), STATE1, XMMTMP /* EFGH */
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movu128 STATE0, 80+0*16(%rdi)
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movu128 XMMTMP, 80+1*16(%rdi)
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ret
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.size sha256_process_block64_shaNI, .-sha256_process_block64_shaNI
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.section .rodata.cst256.K256, "aM", @progbits, 256
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.balign 16
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K256:
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.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
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.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
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.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
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.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
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.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
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.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
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.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
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.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
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.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
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.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
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.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
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.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
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.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
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.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
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.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
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.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
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.section .rodata.cst16.PSHUFFLE_BSWAP32_FLIP_MASK, "aM", @progbits, 16
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.balign 16
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PSHUFFLE_BSWAP32_FLIP_MASK:
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.octa 0x0c0d0e0f08090a0b0405060700010203
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#endif
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