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keccak: Disable acceleration with SSE asm

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Libgcrypt code assumes that on x64 all SSE registers are fair game.
While it's true that CPUs in question support it, we disable it in
our compilation options. Disable the offending optimization.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Vladimir Serbinenko 2025-07-07 14:52:12 +00:00 committed by Daniel Kiper
parent f808ef0d28
commit d65810b01c
1 changed files with 25 additions and 0 deletions
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grub-core/lib/libgcrypt-patches/02_keccak_sse.patch Normal file
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@ -0,0 +1,25 @@
commit b0cf06271da5fe20360953a53a47c69da89669cd
Author: Vladimir Serbinenko <phcoder@gmail.com>
Date: Sun Apr 7 03:33:11 2024 +0000
keccak: Disable acceleration with SSE asm
Libgcrypt code assumes that on x64 all SSE registers are fair game.
While it's true that CPUs in question support it, we disable it in
our compilation options. Disable the offending optimization.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
diff --git a/grub-core/lib/libgcrypt/cipher/keccak.c b/grub-core/lib/libgcrypt/cipher/keccak.c
index 11e64b3e7..8b570263b 100644
--- a/grub-core/lib/libgcrypt-grub/cipher/keccak.c
+++ b/grub-core/lib/libgcrypt-grub/cipher/keccak.c
@@ -275,7 +275,7 @@ keccak_absorb_lane32bi(u32 *lane, u32 x0, u32 x1)
/* Construct generic 64-bit implementation. */
#ifdef USE_64BIT
-#if __GNUC__ >= 4 && defined(__x86_64__)
+#if __GNUC__ >= 4 && defined(__x86_64__) && 0
static inline void absorb_lanes64_8(u64 *dst, const byte *in)
{