diff options
Diffstat (limited to 'fat-ppc.c')
| -rw-r--r-- | fat-ppc.c | 33 |
1 files changed, 31 insertions, 2 deletions
@@ -66,6 +66,7 @@ struct ppc_features { int have_crypto_ext; + int have_altivec; }; #define MATCH(s, slen, literal, llen) \ @@ -76,6 +77,7 @@ get_ppc_features (struct ppc_features *features) { const char *s; features->have_crypto_ext = 0; + features->have_altivec = 0; s = secure_getenv (ENV_OVERRIDE); if (s) @@ -86,6 +88,8 @@ get_ppc_features (struct ppc_features *features) if (MATCH (s, length, "crypto_ext", 10)) features->have_crypto_ext = 1; + else if (MATCH(s, length, "altivec", 7)) + features->have_altivec = 1; if (!sep) break; s = sep + 1; @@ -95,8 +99,10 @@ get_ppc_features (struct ppc_features *features) #if defined(_AIX) && defined(__power_8_andup) features->have_crypto_ext = __power_8_andup() != 0 ? 1 : 0; #else + unsigned long hwcap = 0; unsigned long hwcap2 = 0; # if defined(__linux__) + hwcap = getauxval(AT_HWCAP); hwcap2 = getauxval(AT_HWCAP2); # elif defined(__FreeBSD__) # if __FreeBSD__ >= 12 @@ -106,8 +112,13 @@ get_ppc_features (struct ppc_features *features) sysctlbyname("hw.cpu_features2", &hwcap2, &len, NULL, 0); # endif # endif - features->have_crypto_ext = - (hwcap2 & PPC_FEATURE2_VEC_CRYPTO) == PPC_FEATURE2_VEC_CRYPTO ? 1 : 0; + features->have_crypto_ext + = ((hwcap2 & PPC_FEATURE2_VEC_CRYPTO) == PPC_FEATURE2_VEC_CRYPTO); + + /* We also need VSX instructions, mainly for load and store. */ + features->have_altivec + = ((hwcap & (PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_VSX)) + == (PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_VSX)); #endif } } @@ -120,6 +131,10 @@ DECLARE_FAT_FUNC(_nettle_aes_decrypt, aes_crypt_internal_func) DECLARE_FAT_FUNC_VAR(aes_decrypt, aes_crypt_internal_func, c) DECLARE_FAT_FUNC_VAR(aes_decrypt, aes_crypt_internal_func, ppc64) +DECLARE_FAT_FUNC(_nettle_chacha_core, chacha_core_func) +DECLARE_FAT_FUNC_VAR(chacha_core, chacha_core_func, c); +DECLARE_FAT_FUNC_VAR(chacha_core, chacha_core_func, altivec); + static void CONSTRUCTOR fat_init (void) { @@ -145,6 +160,16 @@ fat_init (void) _nettle_aes_encrypt_vec = _nettle_aes_encrypt_c; _nettle_aes_decrypt_vec = _nettle_aes_decrypt_c; } + if (features.have_altivec) + { + if (verbose) + fprintf (stderr, "libnettle: enabling altivec code.\n"); + _nettle_chacha_core_vec = _nettle_chacha_core_altivec; + } + else + { + _nettle_chacha_core_vec = _nettle_chacha_core_c; + } } DEFINE_FAT_FUNC(_nettle_aes_encrypt, void, @@ -160,3 +185,7 @@ DEFINE_FAT_FUNC(_nettle_aes_decrypt, void, size_t length, uint8_t *dst, const uint8_t *src), (rounds, keys, T, length, dst, src)) + +DEFINE_FAT_FUNC(_nettle_chacha_core, void, + (uint32_t *dst, const uint32_t *src, unsigned rounds), + (dst, src, rounds)) |