* cipher/cipher-gcm-armv8-aarch64-ce.S
(_gcry_ghash_setup_armv8_ce_pmull): Clear used vectors registers
before function exit.
--
Signed-off-by: Jussi Kivilinna <jussi.kivili...@iki.fi>
---
cipher/cipher-gcm-armv8-aarch64-ce.S | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/cipher/cipher-gcm-armv8-aarch64-ce.S
b/cipher/cipher-gcm-armv8-aarch64-ce.S
index 0c31a563..4cb63212 100644
--- a/cipher/cipher-gcm-armv8-aarch64-ce.S
+++ b/cipher/cipher-gcm-armv8-aarch64-ce.S
@@ -610,6 +610,7 @@ _gcry_ghash_setup_armv8_ce_pmull:
/* H³ */
PMUL_128x128(rr0, rr1, rh2, rh1, t0, t1, __)
REDUCTION(rh3, rr0, rr1, rrconst, t0, t1, __, __, __)
+ CLEAR_REG(rh1)
/* H⁴ */
PMUL_128x128(rr0, rr1, rh2, rh2, t0, t1, __)
@@ -622,9 +623,18 @@ _gcry_ghash_setup_armv8_ce_pmull:
/* H⁶ */
PMUL_128x128(rr0, rr1, rh3, rh3, t0, t1, __)
REDUCTION(rh6, rr0, rr1, rrconst, t0, t1, __, __, __)
+ CLEAR_REG(rr0)
+ CLEAR_REG(rr1)
+ CLEAR_REG(t0)
+ CLEAR_REG(t1)
st1 {rh2.16b-rh4.16b}, [x1], #(3*16)
+ CLEAR_REG(rh2)
+ CLEAR_REG(rh3)
+ CLEAR_REG(rh4)
st1 {rh5.16b-rh6.16b}, [x1]
+ CLEAR_REG(rh5)
+ CLEAR_REG(rh6)
ret_spec_stop
CFI_ENDPROC()
--
2.45.2
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