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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-01-07 16:04:40 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2022-01-11 20:10:12 +0200 |
| commit | 859b6ac7fbdb6ec18d1536e14b9ee83c1add224e (patch) | |
| tree | d96e1099461532141ae6084e63603ef07ea81068 /cipher/cipher-gcm-armv8-aarch64-ce.S | |
| parent | f664333a4749eab03c6b19bae2f28863b8501a24 (diff) | |
| download | libgcrypt-859b6ac7fbdb6ec18d1536e14b9ee83c1add224e.tar.gz | |
Use 'vmov' and 'movi' for vector register clearing in ARM assembly
* cipher/chacha20-aarch64.S (clear): Use 'movi'.
* cipher/chacha20-armv7-neon.S (clear): Use 'vmov'.
* cipher/cipher-gcm-armv7-neon.S (clear): Use 'vmov'.
* cipher/cipher-gcm-armv8-aarch32-ce.S (CLEAR_REG): Use 'vmov'.
* cipher/cipher-gcm-armv8-aarch64-ce.S (CLEAR_REG): Use 'movi'.
* cipher/rijndael-armv8-aarch32-ce.S (CLEAR_REG): Use 'vmov'.
* cipher/sha1-armv7-neon.S (clear): Use 'vmov'.
* cipher/sha1-armv8-aarch32-ce.S (CLEAR_REG): Use 'vmov'.
* cipher/sha1-armv8-aarch64-ce.S (CLEAR_REG): Use 'movi'.
* cipher/sha256-armv8-aarch32-ce.S (CLEAR_REG): Use 'vmov'.
* cipher/sha256-armv8-aarch64-ce.S (CLEAR_REG): Use 'movi'.
* cipher/sha512-armv7-neon.S (CLEAR_REG): New using 'vmov'.
(_gcry_sha512_transform_armv7_neon): Use CLEAR_REG for clearing
registers.
--
Use 'vmov reg, #0' on 32-bit and 'movi reg.16b, #0' instead of
self-xoring register to break false register dependency.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/cipher-gcm-armv8-aarch64-ce.S')
| -rw-r--r-- | cipher/cipher-gcm-armv8-aarch64-ce.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cipher/cipher-gcm-armv8-aarch64-ce.S b/cipher/cipher-gcm-armv8-aarch64-ce.S index 877207d3..13ee83ed 100644 --- a/cipher/cipher-gcm-armv8-aarch64-ce.S +++ b/cipher/cipher-gcm-armv8-aarch64-ce.S @@ -149,7 +149,7 @@ gcry_gcm_reduction_constant: #define _(...) __VA_ARGS__ #define __ _() -#define CLEAR_REG(reg) eor reg.16b, reg.16b, reg.16b; +#define CLEAR_REG(reg) movi reg.16b, #0; #define VPUSH_ABI \ stp d8, d9, [sp, #-16]!; \ |