Provide LIBRESSL_USE_.*_ASSEMBLY defines.

Make life easier for portable by providing LIBRESSL_USE_.*_ASSEMBLY
defines, which enable/disable assembly for a specific algorithm. This
means that selected platforms can include the assembly files and specify
a define, rather than having to try to patch the crypto_arch.h headers.

Discussed with tb@

2 files changed, 13 insertions, 5 deletions

diff --git a/src/lib/libcrypto/arch/sparc64/Makefile.inc b/src/lib/libcrypto/arch/sparc64/Makefile.inc
index 2343b3b3e2..3a83ac6282 100644
--- a/src/lib/libcrypto/arch/sparc64/Makefile.inc
+++ b/src/lib/libcrypto/arch/sparc64/Makefile.inc
@@ -1,13 +1,17 @@
-# $OpenBSD: Makefile.inc,v 1.23 2026/01/17 14:30:37 jsing Exp $
+# $OpenBSD: Makefile.inc,v 1.24 2026/01/17 16:18:32 jsing Exp $
 
 # sparc64-specific libcrypto build rules
 
 # aes
+CFLAGS+= -DLIBRESSL_USE_AES_ASSEMBLY
 SSLASM+= aes aes-sparcv9 aes-sparcv9
-# bn
+
 # modes
+CFLAGS+= -DLIBRESSL_USE_GCM_ASSEMBLY
 SSLASM+= modes ghash-sparcv9 ghash-sparcv9
+
 # sha
+CFLAGS+= -DLIBRESSL_USE_SHA_ASSEMBLY
 SSLASM+= sha sha1-sparcv9 sha1-sparcv9
 SSLASM+= sha sha512-sparcv9 sha256-sparcv9
 SSLASM+= sha sha512-sparcv9 sha512-sparcv9
diff --git a/src/lib/libcrypto/arch/sparc64/crypto_arch.h b/src/lib/libcrypto/arch/sparc64/crypto_arch.h
index 405f1c3657..1f160b625c 100644
--- a/src/lib/libcrypto/arch/sparc64/crypto_arch.h
+++ b/src/lib/libcrypto/arch/sparc64/crypto_arch.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: crypto_arch.h,v 1.3 2026/01/17 14:30:37 jsing Exp $ */
+/*      $OpenBSD: crypto_arch.h,v 1.4 2026/01/17 16:18:32 jsing Exp $ */
 /*
  * Copyright (c) 2024 Joel Sing <jsing@openbsd.org>
  *
@@ -20,20 +20,24 @@
 
 #ifndef OPENSSL_NO_ASM
 
+#ifdef LIBRESSL_USE_AES_ASSEMBLY
 #define HAVE_AES_ENCRYPT_INTERNAL
 #define HAVE_AES_DECRYPT_INTERNAL
+#endif
 
+#ifdef LIBRESSL_USE_GCM_ASSEMBLY
 #define HAVE_GCM_GHASH_4BIT
 #define HAVE_GCM_GMULT_4BIT
+#endif
 
+#ifdef LIBRESSL_USE_SHA_ASSEMBLY
 #define HAVE_SHA1_BLOCK_DATA_ORDER
 #define HAVE_SHA1_BLOCK_GENERIC
-
 #define HAVE_SHA256_BLOCK_DATA_ORDER
 #define HAVE_SHA256_BLOCK_GENERIC
-
 #define HAVE_SHA512_BLOCK_DATA_ORDER
 #define HAVE_SHA512_BLOCK_GENERIC
+#endif
 
 #endif