[v2,1/2] crypto: s(h)aving 16 byte constant off arch/x86/crypto/sha1_ni_asm.S

Commit Message

Stefan Kanthak April 8, 2024, 2:08 p.m. UTC

Get rid of 16 byte constant, use shift instead of mask

Patch

--- -/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