diff options
Diffstat (limited to 'app/openssl/crypto/armcap.c')
| -rw-r--r-- | app/openssl/crypto/armcap.c | 85 |
1 files changed, 81 insertions, 4 deletions
diff --git a/app/openssl/crypto/armcap.c b/app/openssl/crypto/armcap.c index 9abaf396..7e46d07a 100644 --- a/app/openssl/crypto/armcap.c +++ b/app/openssl/crypto/armcap.c @@ -19,9 +19,13 @@ static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); } * ARM compilers support inline assembler... */ 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 long _armv7_tick(void); -unsigned int OPENSSL_rdtsc(void) +unsigned long OPENSSL_rdtsc(void) { if (OPENSSL_armcap_P & ARMV7_TICK) return _armv7_tick(); @@ -29,9 +33,41 @@ unsigned int OPENSSL_rdtsc(void) return 0; } +/* + * Use a weak reference to getauxval() so we can use it if it is available but + * don't break the build if it is not. + */ #if defined(__GNUC__) && __GNUC__>=2 void OPENSSL_cpuid_setup(void) __attribute__((constructor)); +extern unsigned long getauxval(unsigned long type) __attribute__((weak)); +#else +static unsigned long (*getauxval)(unsigned long) = NULL; #endif + +/* + * ARM puts the the feature bits for Crypto Extensions in AT_HWCAP2, whereas + * AArch64 used AT_HWCAP. + */ +#if defined(__arm__) || defined (__arm) +# define HWCAP 16 /* AT_HWCAP */ +# define HWCAP_NEON (1 << 12) + +# define HWCAP_CE 26 /* AT_HWCAP2 */ +# define HWCAP_CE_AES (1 << 0) +# define HWCAP_CE_PMULL (1 << 1) +# define HWCAP_CE_SHA1 (1 << 2) +# define HWCAP_CE_SHA256 (1 << 3) +#elif defined(__aarch64__) +# define HWCAP 16 /* AT_HWCAP */ +# define HWCAP_NEON (1 << 1) + +# define HWCAP_CE HWCAP +# define HWCAP_CE_AES (1 << 3) +# define HWCAP_CE_PMULL (1 << 4) +# define HWCAP_CE_SHA1 (1 << 5) +# define HWCAP_CE_SHA256 (1 << 6) +#endif + void OPENSSL_cpuid_setup(void) { char *e; @@ -44,7 +80,7 @@ void OPENSSL_cpuid_setup(void) if ((e=getenv("OPENSSL_armcap"))) { - OPENSSL_armcap_P=strtoul(e,NULL,0); + OPENSSL_armcap_P=(unsigned int)strtoul(e,NULL,0); return; } @@ -64,10 +100,51 @@ void OPENSSL_cpuid_setup(void) sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset); sigaction(SIGILL,&ill_act,&ill_oact); - if (sigsetjmp(ill_jmp,1) == 0) + if (getauxval != NULL) + { + if (getauxval(HWCAP) & HWCAP_NEON) + { + unsigned long hwcap = getauxval(HWCAP_CE); + + OPENSSL_armcap_P |= ARMV7_NEON; + + if (hwcap & HWCAP_CE_AES) + OPENSSL_armcap_P |= ARMV8_AES; + + if (hwcap & HWCAP_CE_PMULL) + OPENSSL_armcap_P |= ARMV8_PMULL; + + if (hwcap & HWCAP_CE_SHA1) + OPENSSL_armcap_P |= ARMV8_SHA1; + + if (hwcap & HWCAP_CE_SHA256) + OPENSSL_armcap_P |= ARMV8_SHA256; + } + } + else if (sigsetjmp(ill_jmp,1) == 0) { _armv7_neon_probe(); OPENSSL_armcap_P |= ARMV7_NEON; + 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; + } } if (sigsetjmp(ill_jmp,1) == 0) { |