Engage ARMv8 assembly pack.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

crypto/arm_arch.h

@@ -10,13 +10,22 @@
 #   define __ARMEL__
 #  endif
 # elif defined(__GNUC__)
+#  if  defined(__aarch64__)
+#   define __ARM_ARCH__ 8
+#   if __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
+#    define __ARMEB__
+#   else
+#    define __ARMEL__
+#   endif
   /*
    * Why doesn't gcc define __ARM_ARCH__? Instead it defines
    * bunch of below macros. See all_architectires[] table in
    * gcc/config/arm/arm.c. On a side note it defines
    * __ARMEL__/__ARMEB__ for little-/big-endian.
    */
-#  if	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
+#  elif defined(__ARM_ARCH_8A__)
+#    define __ARM_ARCH__ 8
+#  elif	defined(__ARM_ARCH_7__)	|| defined(__ARM_ARCH_7A__)	|| \
 	defined(__ARM_ARCH_7R__)|| defined(__ARM_ARCH_7M__)	|| \
 	defined(__ARM_ARCH_7EM__)
 #   define __ARM_ARCH__ 7
@@ -42,10 +51,14 @@
 
 #if !__ASSEMBLER__
 extern unsigned int OPENSSL_armcap_P;
+#endif
                                      
 #define ARMV7_NEON      (1<<0)
 #define ARMV7_TICK      (1<<1)
-#endif
+#define ARMV8_AES       (1<<2)
+#define ARMV8_SHA1      (1<<3)
+#define ARMV8_SHA256    (1<<4)
+#define ARMV8_PMULL     (1<<5)
 
 #endif
 #endif

crypto/armcap.c

@@ -20,6 +20,10 @@ static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
  */
 void _armv7_neon_probe(void);
 unsigned int _armv7_tick(void);
+void _armv8_aes_probe(void);
+void _armv8_sha1_probe(void);
+void _armv8_sha256_probe(void);
+void _armv8_pmull_probe(void);
 
 unsigned int OPENSSL_rdtsc(void)
 	{
@@ -68,6 +72,28 @@ void OPENSSL_cpuid_setup(void)
 		{
 		_armv7_neon_probe();
 		OPENSSL_armcap_P |= ARMV7_NEON;
+#ifdef __aarch64__
+		if (sigsetjmp(ill_jmp,1) == 0)
+			{
+			_armv8_pmull_probe();
+			OPENSSL_armcap_P |= ARMV8_PMULL|ARMV8_AES;
+			}
+		else if (sigsetjmp(ill_jmp,1) == 0)
+			{
+			_armv8_aes_probe();
+			OPENSSL_armcap_P |= ARMV8_AES;
+			}
+		if (sigsetjmp(ill_jmp,1) == 0)
+			{
+			_armv8_sha1_probe();
+			OPENSSL_armcap_P |= ARMV8_SHA1;
+			}
+		if (sigsetjmp(ill_jmp,1) == 0)
+			{
+			_armv8_sha256_probe();
+			OPENSSL_armcap_P |= ARMV8_SHA256;
+			}
+#endif
 		}
 	if (sigsetjmp(ill_jmp,1) == 0)
 		{

crypto/evp/e_aes.c

@@ -471,6 +471,35 @@ const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
 { return &aes_##keylen##_##mode; }
 #endif
 
+#if defined(OPENSSL_CPUID_OBJ) && defined(__aarch64__)
+#include "arm_arch.h"
+#if __ARM_ARCH__>=7
+# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
+# define HWAES_set_encrypt_key aes_v8_set_encrypt_key
+# define HWAES_set_decrypt_key aes_v8_set_decrypt_key
+# define HWAES_encrypt aes_v8_encrypt
+# define HWAES_decrypt aes_v8_decrypt
+# define HWAES_cbc_encrypt aes_v8_cbc_encrypt
+# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
+#endif
+#endif
+
+#if defined(HWAES_CAPABLE)
+int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits,
+	AES_KEY *key);
+int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits,
+	AES_KEY *key);
+void HWAES_encrypt(const unsigned char *in, unsigned char *out,
+	const AES_KEY *key);
+void HWAES_decrypt(const unsigned char *in, unsigned char *out,
+	const AES_KEY *key);
+void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out,
+	size_t length, const AES_KEY *key,
+	unsigned char *ivec, const int enc);
+void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
+	size_t len, const AES_KEY *key, const unsigned char ivec[16]);
+#endif
+
 #define BLOCK_CIPHER_generic_pack(nid,keylen,flags)		\
 	BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)	\
 	BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1)	\
@@ -489,6 +518,19 @@ static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	mode = ctx->cipher->flags & EVP_CIPH_MODE;
 	if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
 	    && !enc)
+#ifdef HWAES_CAPABLE
+	    if (HWAES_CAPABLE)
+		{
+		ret = HWAES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
+		dat->block      = (block128_f)HWAES_decrypt;
+		dat->stream.cbc = NULL;
+#ifdef HWAES_cbc_encrypt
+		if (mode==EVP_CIPH_CBC_MODE)
+		    dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
+#endif
+		}
+	    else
+#endif
 #ifdef BSAES_CAPABLE
 	    if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
 		{
@@ -517,6 +559,26 @@ static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 					NULL;
 		}
 	else
+#ifdef HWAES_CAPABLE
+	    if (HWAES_CAPABLE)
+		{
+		ret = HWAES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
+		dat->block      = (block128_f)HWAES_encrypt;
+		dat->stream.cbc = NULL;
+#ifdef HWAES_cbc_encrypt
+		if (mode==EVP_CIPH_CBC_MODE)
+		    dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
+		else
+#endif
+#ifdef HWAES_ctr32_encrypt_blocks
+		if (mode==EVP_CIPH_CTR_MODE)
+		    dat->stream.ctr = (ctr128_f)HWAES_ctr32_encrypt_blocks;
+		else
+#endif
+		(void)0;	/* terminate potentially open 'else' */
+		}
+	    else
+#endif
 #ifdef BSAES_CAPABLE
 	    if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
 		{
@@ -809,6 +871,21 @@ static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 		return 1;
 	if (key)
 		{ do {
+#ifdef HWAES_CAPABLE
+		if (HWAES_CAPABLE)
+			{
+			HWAES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
+			CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
+					(block128_f)HWAES_encrypt);
+#ifdef HWAES_ctr32_encrypt_blocks
+			gctx->ctr = (ctr128_f)HWAES_ctr32_encrypt_blocks;
+#else
+			gctx->ctr = NULL;
+#endif
+			break;
+			}
+		else
+#endif
 #ifdef BSAES_CAPABLE
 		if (BSAES_CAPABLE)
 			{
@@ -1047,6 +1124,29 @@ static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 		{
 		xctx->stream = NULL;
 		/* key_len is two AES keys */
+#ifdef HWAES_CAPABLE
+		if (HWAES_CAPABLE)
+			{
+			if (enc)
+			    {
+			    HWAES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
+			    xctx->xts.block1 = (block128_f)HWAES_encrypt;
+			    }
+			else
+			    {
+			    HWAES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
+			    xctx->xts.block1 = (block128_f)HWAES_decrypt;
+			    }
+
+			HWAES_set_encrypt_key(key + ctx->key_len/2,
+						    ctx->key_len * 4, &xctx->ks2);
+			xctx->xts.block2 = (block128_f)HWAES_encrypt;
+
+			xctx->xts.key1 = &xctx->ks1;
+			break;
+			}
+		else
+#endif
 #ifdef VPAES_CAPABLE
 		if (VPAES_CAPABLE)
 		    {
@@ -1189,6 +1289,19 @@ static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 		return 1;
 	if (key) do
 		{
+#ifdef HWAES_CAPABLE
+		if (HWAES_CAPABLE)
+			{
+			HWAES_set_encrypt_key(key,ctx->key_len*8,&cctx->ks);
+
+			CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
+					&cctx->ks, (block128_f)HWAES_encrypt);
+			cctx->str = NULL;
+			cctx->key_set = 1;
+			break;
+			}
+		else
+#endif
 #ifdef VPAES_CAPABLE
 		if (VPAES_CAPABLE)
 			{

crypto/modes/gcm128.c

@@ -645,7 +645,7 @@ static void gcm_gmult_1bit(u64 Xi[2],const u64 H[2])
 
 #endif
 
-#if	TABLE_BITS==4 && defined(GHASH_ASM)
+#if	TABLE_BITS==4 && (defined(GHASH_ASM) || defined(OPENSSL_CPUID_OBJ))
 # if	!defined(I386_ONLY) && \
 	(defined(__i386)	|| defined(__i386__)	|| \
 	 defined(__x86_64)	|| defined(__x86_64__)	|| \
@@ -666,13 +666,22 @@ void gcm_ghash_4bit_mmx(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len
 void gcm_gmult_4bit_x86(u64 Xi[2],const u128 Htable[16]);
 void gcm_ghash_4bit_x86(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
 #  endif
-# elif defined(__arm__) || defined(__arm)
+# elif defined(__arm__) || defined(__arm) || defined(__aarch64__)
 #  include "arm_arch.h"
 #  if __ARM_ARCH__>=7
 #   define GHASH_ASM_ARM
 #   define GCM_FUNCREF_4BIT
+#   if defined(__aarch64__)
+#    define PMULL_CAPABLE	(OPENSSL_armcap_P & ARMV8_PMULL)
+#   endif
+#   if defined(__arm__) || defined(__arm)
+#    define NEON_CAPABLE	(OPENSSL_armcap_P & ARMV7_NEON)
+#   endif
 void gcm_gmult_neon(u64 Xi[2],const u128 Htable[16]);
 void gcm_ghash_neon(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
+void gcm_init_v8(u128 Htable[16],const u64 Xi[2]);
+void gcm_gmult_v8(u64 Xi[2],const u128 Htable[16]);
+void gcm_ghash_v8(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
 #  endif
 # elif defined(_TMS320C6400_PLUS)
 #   define GHASH_ASM_C64Xplus
@@ -740,10 +749,20 @@ void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx,void *key,block128_f block)
 	ctx->ghash = gcm_ghash_4bit;
 #  endif
 # elif	defined(GHASH_ASM_ARM)
-	if (OPENSSL_armcap_P & ARMV7_NEON) {
+#  ifdef PMULL_CAPABLE
+	if (PMULL_CAPABLE) {
+		gcm_init_v8(ctx->Htable,ctx->H.u);
+		ctx->gmult = gcm_gmult_v8;
+		ctx->ghash = gcm_ghash_v8;
+	} else
+#  endif
+#  ifdef NEON_CAPABLE
+	if (NEON_CAPABLE) {
 		ctx->gmult = gcm_gmult_neon;
 		ctx->ghash = gcm_ghash_neon;
-	} else {
+	} else
+#  endif
+	{
 		gcm_init_4bit(ctx->Htable,ctx->H.u);
 		ctx->gmult = gcm_gmult_4bit;
 		ctx->ghash = gcm_ghash_4bit;