diff options
| author | Jack Lloyd <[email protected]> | 2019-07-10 21:31:48 -0400 |
|---|---|---|
| committer | Jack Lloyd <[email protected]> | 2019-08-27 09:27:33 -0400 |
| commit | 308bdc190f4e6a3606f801390d191988a0438557 (patch) | |
| tree | f8c9763c439fca5fda33c523928c7bd02d929a84 /src/lib/utils | |
| parent | ecb22c16531db3023c739fa1436d8f3893fa1081 (diff) | |
Add support for POWER9 DARN RNG
Diffstat (limited to 'src/lib/utils')
| -rw-r--r-- | src/lib/utils/cpuid/cpuid.cpp | 1 | ||||
| -rw-r--r-- | src/lib/utils/cpuid/cpuid.h | 7 | ||||
| -rw-r--r-- | src/lib/utils/cpuid/cpuid_ppc.cpp | 3 |
3 files changed, 11 insertions, 0 deletions
diff --git a/src/lib/utils/cpuid/cpuid.cpp b/src/lib/utils/cpuid/cpuid.cpp index e890af061..18ccff419 100644 --- a/src/lib/utils/cpuid/cpuid.cpp +++ b/src/lib/utils/cpuid/cpuid.cpp @@ -63,6 +63,7 @@ std::string CPUID::to_string() #if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) CPUID_PRINT(altivec); CPUID_PRINT(ppc_crypto); + CPUID_PRINT(darn_rng); #endif #if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) diff --git a/src/lib/utils/cpuid/cpuid.h b/src/lib/utils/cpuid/cpuid.h index d278a8fcc..256c6cc57 100644 --- a/src/lib/utils/cpuid/cpuid.h +++ b/src/lib/utils/cpuid/cpuid.h @@ -107,6 +107,7 @@ class BOTAN_PUBLIC_API(2,1) CPUID final #if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) CPUID_ALTIVEC_BIT = (1ULL << 0), CPUID_PPC_CRYPTO_BIT = (1ULL << 1), + CPUID_DARN_BIT = (1ULL << 2), #endif #if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) @@ -138,6 +139,12 @@ class BOTAN_PUBLIC_API(2,1) CPUID final static bool has_ppc_crypto() { return has_cpuid_bit(CPUID_PPC_CRYPTO_BIT); } + /** + * Check if the processor supports POWER9 DARN RNG + */ + static bool has_darn_rng() + { return has_cpuid_bit(CPUID_DARN_BIT); } + #endif #if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) diff --git a/src/lib/utils/cpuid/cpuid_ppc.cpp b/src/lib/utils/cpuid/cpuid_ppc.cpp index 08a04cafd..ff528d88e 100644 --- a/src/lib/utils/cpuid/cpuid_ppc.cpp +++ b/src/lib/utils/cpuid/cpuid_ppc.cpp @@ -58,6 +58,7 @@ uint64_t CPUID::CPUID_Data::detect_cpu_features(size_t* cache_line_size) enum PPC_hwcap_bit { ALTIVEC_bit = (1 << 28), CRYPTO_bit = (1 << 25), + DARN_bit = (1 << 21), ARCH_hwcap_altivec = 16, // AT_HWCAP ARCH_hwcap_crypto = 26, // AT_HWCAP2 @@ -72,6 +73,8 @@ uint64_t CPUID::CPUID_Data::detect_cpu_features(size_t* cache_line_size) const unsigned long hwcap_crypto = OS::get_auxval(PPC_hwcap_bit::ARCH_hwcap_crypto); if(hwcap_crypto & PPC_hwcap_bit::CRYPTO_bit) detected_features |= CPUID::CPUID_PPC_CRYPTO_BIT; + if(hwcap_crypto & PPC_hwcap_bit::DARN_bit) + detected_features |= CPUID::CPUID_DARN_BIT; return detected_features; |