diff options
Diffstat (limited to 'arch/x86/crypto/sha256_ni_asm.S')
-rw-r--r-- | arch/x86/crypto/sha256_ni_asm.S | 253 |
1 files changed, 49 insertions, 204 deletions
diff --git a/arch/x86/crypto/sha256_ni_asm.S b/arch/x86/crypto/sha256_ni_asm.S index 537b6dcd7ed8..d515a55a3bc1 100644 --- a/arch/x86/crypto/sha256_ni_asm.S +++ b/arch/x86/crypto/sha256_ni_asm.S @@ -62,20 +62,41 @@ #define SHA256CONSTANTS %rax -#define MSG %xmm0 +#define MSG %xmm0 /* sha256rnds2 implicit operand */ #define STATE0 %xmm1 #define STATE1 %xmm2 -#define MSGTMP0 %xmm3 -#define MSGTMP1 %xmm4 -#define MSGTMP2 %xmm5 -#define MSGTMP3 %xmm6 -#define MSGTMP4 %xmm7 +#define MSG0 %xmm3 +#define MSG1 %xmm4 +#define MSG2 %xmm5 +#define MSG3 %xmm6 +#define TMP %xmm7 #define SHUF_MASK %xmm8 #define ABEF_SAVE %xmm9 #define CDGH_SAVE %xmm10 +.macro do_4rounds i, m0, m1, m2, m3 +.if \i < 16 + movdqu \i*4(DATA_PTR), \m0 + pshufb SHUF_MASK, \m0 +.endif + movdqa (\i-32)*4(SHA256CONSTANTS), MSG + paddd \m0, MSG + sha256rnds2 STATE0, STATE1 +.if \i >= 12 && \i < 60 + movdqa \m0, TMP + palignr $4, \m3, TMP + paddd TMP, \m1 + sha256msg2 \m0, \m1 +.endif + punpckhqdq MSG, MSG + sha256rnds2 STATE1, STATE0 +.if \i >= 4 && \i < 52 + sha256msg1 \m0, \m3 +.endif +.endm + /* * Intel SHA Extensions optimized implementation of a SHA-256 update function * @@ -86,9 +107,6 @@ * store partial blocks. All message padding and hash value initialization must * be done outside the update function. * - * The indented lines in the loop are instructions related to rounds processing. - * The non-indented lines are instructions related to the message schedule. - * * void sha256_ni_transform(uint32_t *digest, const void *data, uint32_t numBlocks); * digest : pointer to digest @@ -108,202 +126,29 @@ SYM_TYPED_FUNC_START(sha256_ni_transform) * Need to reorder these appropriately * DCBA, HGFE -> ABEF, CDGH */ - movdqu 0*16(DIGEST_PTR), STATE0 - movdqu 1*16(DIGEST_PTR), STATE1 + movdqu 0*16(DIGEST_PTR), STATE0 /* DCBA */ + movdqu 1*16(DIGEST_PTR), STATE1 /* HGFE */ - pshufd $0xB1, STATE0, STATE0 /* CDAB */ - pshufd $0x1B, STATE1, STATE1 /* EFGH */ - movdqa STATE0, MSGTMP4 - palignr $8, STATE1, STATE0 /* ABEF */ - pblendw $0xF0, MSGTMP4, STATE1 /* CDGH */ + movdqa STATE0, TMP + punpcklqdq STATE1, STATE0 /* FEBA */ + punpckhqdq TMP, STATE1 /* DCHG */ + pshufd $0x1B, STATE0, STATE0 /* ABEF */ + pshufd $0xB1, STATE1, STATE1 /* CDGH */ movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK - lea K256(%rip), SHA256CONSTANTS + lea K256+32*4(%rip), SHA256CONSTANTS .Lloop0: /* Save hash values for addition after rounds */ movdqa STATE0, ABEF_SAVE movdqa STATE1, CDGH_SAVE - /* Rounds 0-3 */ - movdqu 0*16(DATA_PTR), MSG - pshufb SHUF_MASK, MSG - movdqa MSG, MSGTMP0 - paddd 0*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - - /* Rounds 4-7 */ - movdqu 1*16(DATA_PTR), MSG - pshufb SHUF_MASK, MSG - movdqa MSG, MSGTMP1 - paddd 1*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP1, MSGTMP0 - - /* Rounds 8-11 */ - movdqu 2*16(DATA_PTR), MSG - pshufb SHUF_MASK, MSG - movdqa MSG, MSGTMP2 - paddd 2*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP2, MSGTMP1 - - /* Rounds 12-15 */ - movdqu 3*16(DATA_PTR), MSG - pshufb SHUF_MASK, MSG - movdqa MSG, MSGTMP3 - paddd 3*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP3, MSGTMP4 - palignr $4, MSGTMP2, MSGTMP4 - paddd MSGTMP4, MSGTMP0 - sha256msg2 MSGTMP3, MSGTMP0 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP3, MSGTMP2 - - /* Rounds 16-19 */ - movdqa MSGTMP0, MSG - paddd 4*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP0, MSGTMP4 - palignr $4, MSGTMP3, MSGTMP4 - paddd MSGTMP4, MSGTMP1 - sha256msg2 MSGTMP0, MSGTMP1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP0, MSGTMP3 - - /* Rounds 20-23 */ - movdqa MSGTMP1, MSG - paddd 5*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP1, MSGTMP4 - palignr $4, MSGTMP0, MSGTMP4 - paddd MSGTMP4, MSGTMP2 - sha256msg2 MSGTMP1, MSGTMP2 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP1, MSGTMP0 - - /* Rounds 24-27 */ - movdqa MSGTMP2, MSG - paddd 6*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP2, MSGTMP4 - palignr $4, MSGTMP1, MSGTMP4 - paddd MSGTMP4, MSGTMP3 - sha256msg2 MSGTMP2, MSGTMP3 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP2, MSGTMP1 - - /* Rounds 28-31 */ - movdqa MSGTMP3, MSG - paddd 7*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP3, MSGTMP4 - palignr $4, MSGTMP2, MSGTMP4 - paddd MSGTMP4, MSGTMP0 - sha256msg2 MSGTMP3, MSGTMP0 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP3, MSGTMP2 - - /* Rounds 32-35 */ - movdqa MSGTMP0, MSG - paddd 8*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP0, MSGTMP4 - palignr $4, MSGTMP3, MSGTMP4 - paddd MSGTMP4, MSGTMP1 - sha256msg2 MSGTMP0, MSGTMP1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP0, MSGTMP3 - - /* Rounds 36-39 */ - movdqa MSGTMP1, MSG - paddd 9*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP1, MSGTMP4 - palignr $4, MSGTMP0, MSGTMP4 - paddd MSGTMP4, MSGTMP2 - sha256msg2 MSGTMP1, MSGTMP2 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP1, MSGTMP0 - - /* Rounds 40-43 */ - movdqa MSGTMP2, MSG - paddd 10*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP2, MSGTMP4 - palignr $4, MSGTMP1, MSGTMP4 - paddd MSGTMP4, MSGTMP3 - sha256msg2 MSGTMP2, MSGTMP3 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP2, MSGTMP1 - - /* Rounds 44-47 */ - movdqa MSGTMP3, MSG - paddd 11*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP3, MSGTMP4 - palignr $4, MSGTMP2, MSGTMP4 - paddd MSGTMP4, MSGTMP0 - sha256msg2 MSGTMP3, MSGTMP0 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP3, MSGTMP2 - - /* Rounds 48-51 */ - movdqa MSGTMP0, MSG - paddd 12*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP0, MSGTMP4 - palignr $4, MSGTMP3, MSGTMP4 - paddd MSGTMP4, MSGTMP1 - sha256msg2 MSGTMP0, MSGTMP1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - sha256msg1 MSGTMP0, MSGTMP3 - - /* Rounds 52-55 */ - movdqa MSGTMP1, MSG - paddd 13*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP1, MSGTMP4 - palignr $4, MSGTMP0, MSGTMP4 - paddd MSGTMP4, MSGTMP2 - sha256msg2 MSGTMP1, MSGTMP2 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - - /* Rounds 56-59 */ - movdqa MSGTMP2, MSG - paddd 14*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - movdqa MSGTMP2, MSGTMP4 - palignr $4, MSGTMP1, MSGTMP4 - paddd MSGTMP4, MSGTMP3 - sha256msg2 MSGTMP2, MSGTMP3 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 - - /* Rounds 60-63 */ - movdqa MSGTMP3, MSG - paddd 15*16(SHA256CONSTANTS), MSG - sha256rnds2 STATE0, STATE1 - pshufd $0x0E, MSG, MSG - sha256rnds2 STATE1, STATE0 +.irp i, 0, 16, 32, 48 + do_4rounds (\i + 0), MSG0, MSG1, MSG2, MSG3 + do_4rounds (\i + 4), MSG1, MSG2, MSG3, MSG0 + do_4rounds (\i + 8), MSG2, MSG3, MSG0, MSG1 + do_4rounds (\i + 12), MSG3, MSG0, MSG1, MSG2 +.endr /* Add current hash values with previously saved */ paddd ABEF_SAVE, STATE0 @@ -315,14 +160,14 @@ SYM_TYPED_FUNC_START(sha256_ni_transform) jne .Lloop0 /* Write hash values back in the correct order */ - pshufd $0x1B, STATE0, STATE0 /* FEBA */ - pshufd $0xB1, STATE1, STATE1 /* DCHG */ - movdqa STATE0, MSGTMP4 - pblendw $0xF0, STATE1, STATE0 /* DCBA */ - palignr $8, MSGTMP4, STATE1 /* HGFE */ - - movdqu STATE0, 0*16(DIGEST_PTR) - movdqu STATE1, 1*16(DIGEST_PTR) + movdqa STATE0, TMP + punpcklqdq STATE1, STATE0 /* GHEF */ + punpckhqdq TMP, STATE1 /* ABCD */ + pshufd $0xB1, STATE0, STATE0 /* HGFE */ + pshufd $0x1B, STATE1, STATE1 /* DCBA */ + + movdqu STATE1, 0*16(DIGEST_PTR) + movdqu STATE0, 1*16(DIGEST_PTR) .Ldone_hash: |