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| author | Ard Biesheuvel <ardb@kernel.org> | 2023-04-12 14:00:32 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-20 13:20:04 +0300 |
| commit | e4ab7680bb0c97656300cc77c79d85d445769d00 (patch) | |
| tree | 98c1402a1fdd6556319c3aca089d84f1884b7649 | |
| parent | c41672b9fdc3cbee289e85eb00900d467ec5f03f (diff) | |
| download | linux-e4ab7680bb0c97656300cc77c79d85d445769d00.tar.xz | |
crypto: x86/sha256 - Use RIP-relative addressing
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>
| -rw-r--r-- | arch/x86/crypto/sha256-avx2-asm.S | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S index 3eada9416852..e2a4024fb0a3 100644 --- a/arch/x86/crypto/sha256-avx2-asm.S +++ b/arch/x86/crypto/sha256-avx2-asm.S @@ -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 |