Messages in this thread Patch in this message | | | From | "Stefan Kanthak" <> | Subject | [PATCH v2 1/2] crypto: s(h)aving 16 byte constant off arch/x86/crypto/sha1_ni_asm.S | Date | Mon, 8 Apr 2024 16:08:52 +0200 |
| |
Get rid of 16 byte constant, use shift instead of mask
--- -/arch/x86/crypto/sha1_ni_asm.S +++ +/arch/x86/crypto/sha1_ni_asm.S @@ -104,9 +104,9 @@ add DATA_PTR, NUM_BLKS /* pointer to end of data */ /* load initial hash values */ - pinsrd $3, 1*16(DIGEST_PTR), E0 + pinsrd $0, 1*16(DIGEST_PTR), E0 movdqu 0*16(DIGEST_PTR), ABCD - pand UPPER_WORD_MASK(%rip), E0 + pslldq $12, E0 pshufd $0x1B, ABCD, ABCD movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK @@ -297,8 +297,3 @@ .align 16 PSHUFFLE_BYTE_FLIP_MASK: .octa 0x000102030405060708090a0b0c0d0e0f - -.section .rodata.cst16.UPPER_WORD_MASK, "aM", @progbits, 16 -.align 16 -UPPER_WORD_MASK: - .octa 0xFFFFFFFF000000000000000000000000
| |