commit 4ad27aa47ef1db7815980bece810489dc029c6c9
author Solar Designer <solar@openwall.com> Sun Dec 08 18:55:53 2024 +0100
committer Solar Designer <solar@openwall.com> Fri Dec 13 02:14:13 2024 +0100
tree 9d0f38fa284db5b3558ae42cb4de393cd1608f99
parent 4115440aa7c833490c2c2646d2bf0dabbd9ceb7b

Specify previously missed XMM register clobbers in AES-NI asm blocks

Noticed by Gilles Peskine

Co-authored-by: Gilles Peskine <gilles.peskine@arm.com>
Signed-off-by: Solar Designer <solar@openwall.com>

library/aesni.c

diff --git a/library/aesni.c b/library/aesni.c
index 3bfc8d0..7491f8d 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -648,7 +648,7 @@
          AESKEYGENA(xmm0_xmm1, "0x36")      "call 1b \n\t"
          :
          : "r" (rk), "r" (key)
-         : "memory", "cc", "0");
+         : "memory", "cc", "xmm0", "xmm1", "0");
 }
 
 /*
@@ -705,7 +705,7 @@
 
          :
          : "r" (rk), "r" (key)
-         : "memory", "cc", "0");
+         : "memory", "cc", "xmm0", "xmm1", "xmm2", "0");
 }
 
 /*
@@ -771,7 +771,7 @@
          AESKEYGENA(xmm1_xmm2, "0x40")      "call 1b \n\t"
          :
          : "r" (rk), "r" (key)
-         : "memory", "cc", "0");
+         : "memory", "cc", "xmm0", "xmm1", "xmm2", "0");
 }
 
 #endif  /* MBEDTLS_AESNI_HAVE_CODE */