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fix small footprint builds on arm 

Building with '-D OPENSSL_SMALL_FOOTPRINT' for aarch64 fails due to
'gcm_ghash_4bit' being undeclared.  Fix that by not setting the function
pointer when building with OPENSSL_SMALL_FOOTPRINT, matching openssl
behavior on x86.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25419)

(cherry picked from commit 2a53df6947)
This commit is contained in:
Gerd Hoffmann 2024-09-09 17:09:34 +02:00 committed by Pauli
parent cd0819276d
commit 43e804acc6
1 changed files with 4 additions and 0 deletions
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4
crypto/modes/gcm128.c
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@ -485,7 +485,11 @@ static void gcm_get_funcs(struct gcm_funcs_st *ctx)
#elif defined(GHASH_ASM_ARM) #elif defined(GHASH_ASM_ARM)
/* ARM defaults */ /* ARM defaults */
ctx->gmult = gcm_gmult_4bit; ctx->gmult = gcm_gmult_4bit;
# if !defined(OPENSSL_SMALL_FOOTPRINT)
ctx->ghash = gcm_ghash_4bit; ctx->ghash = gcm_ghash_4bit;
# else
ctx->ghash = NULL;
# endif
# ifdef PMULL_CAPABLE # ifdef PMULL_CAPABLE
if (PMULL_CAPABLE) { if (PMULL_CAPABLE) {
ctx->ginit = (gcm_init_fn)gcm_init_v8; ctx->ginit = (gcm_init_fn)gcm_init_v8;