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crypto: x86/sha256 - Use RIP-relative addressing

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Prefer RIP-relative addressing where possible, which removes the need
for boot time relocation fixups.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2023-04-12 13:00:32 +02:00 • committed by Herbert Xu
parent c41672b9fd
commit e4ab7680bb
1 changed files with 12 additions and 6 deletions
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18
arch/x86/crypto/sha256-avx2-asm.S
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@ -589,19 +589,23 @@ last_block_enter:
.align 16
loop1:
vpaddd K256+0*32(SRND), X0, XFER
leaq K256+0*32(%rip), INP ## reuse INP as scratch reg
vpaddd (INP, SRND), X0, XFER
vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 0*32
vpaddd K256+1*32(SRND), X0, XFER
leaq K256+1*32(%rip), INP
vpaddd (INP, SRND), X0, XFER
vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 1*32
vpaddd K256+2*32(SRND), X0, XFER
leaq K256+2*32(%rip), INP
vpaddd (INP, SRND), X0, XFER
vmovdqa XFER, 2*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 2*32
vpaddd K256+3*32(SRND), X0, XFER
leaq K256+3*32(%rip), INP
vpaddd (INP, SRND), X0, XFER
vmovdqa XFER, 3*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 3*32
@ -611,11 +615,13 @@ loop1:
loop2:
## Do last 16 rounds with no scheduling
vpaddd K256+0*32(SRND), X0, XFER
leaq K256+0*32(%rip), INP
vpaddd (INP, SRND), X0, XFER
vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
DO_4ROUNDS _XFER + 0*32
vpaddd K256+1*32(SRND), X1, XFER
leaq K256+1*32(%rip), INP
vpaddd (INP, SRND), X1, XFER
vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
DO_4ROUNDS _XFER + 1*32
add $2*32, SRND