Add Power9 Random Number Generator support (GH #747, PR #748)

1 files changed, 43 insertions, 7 deletions

diff --git a/cpu.h b/cpu.h
index 648c859f..220eedfd 100644
--- a/cpu.h
+++ b/cpu.h
@@ -591,10 +591,12 @@ extern bool g_PowerpcDetectionDone;
 extern bool g_hasAltivec;

 extern bool g_hasPower7;

 extern bool g_hasPower8;

+extern bool g_hasPower9;

 extern bool g_hasAES;

 extern bool g_hasPMULL;

 extern bool g_hasSHA256;

 extern bool g_hasSHA512;

+extern bool g_hasDARN;

 extern word32 g_cacheLineSize;

 void CRYPTOPP_API DetectPowerpcFeatures();

 #endif  // CRYPTOPP_DOXYGEN_PROCESSING

@@ -608,7 +610,7 @@ void CRYPTOPP_API DetectPowerpcFeatures();
 /// \details Runtime support requires compile time support. When compiling with GCC, you may

 ///   need to compile with <tt>-mcpu=power4</tt>; while IBM XL C/C++ compilers require

 ///   <tt>-qarch=pwr6 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

-/// \details Atilvec was first available on Power4 platforms. However Crypto++ releies heavily

+/// \details Atilvec was first available in the early 2000's. However Crypto++ releies heavily

 ///   on unaligned loads and stores which is a Power7 feature. If the platform lacks Power7

 ///   extensions, then the GNUmakefile sets <tt>-DCRYPTOPP_DISABLE_POWER7</tt>.

 /// \note This function is only available on PowerPC and PowerPC-64 platforms

@@ -619,13 +621,13 @@ inline bool HasAltivec()
 	return g_hasAltivec;

 }

 

-/// \brief Determine if a PowerPC processor has Power8 available

-/// \returns true if the hardware is capable of Power8 at runtime, false otherwise.

+/// \brief Determine if a PowerPC processor has Power7 available

+/// \returns true if the hardware is capable of Power7 at runtime, false otherwise.

 /// \details Altivec instructions are available under most modern PowerPCs.

 /// \details Runtime support requires compile time support. When compiling with GCC, you may

-///   need to compile with <tt>-mcpu=power8</tt>; while IBM XL C/C++ compilers require

-///   <tt>-qarch=pwr8 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

-/// \details Atilvec was first available on Power4 platforms. However Crypto++ releies heavily

+///   need to compile with <tt>-mcpu=power7</tt>; while IBM XL C/C++ compilers require

+///   <tt>-qarch=pwr7 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

+/// \details Atilvec was first available in the early 2000's. However Crypto++ releies heavily

 ///   on unaligned loads and stores which is a Power7 feature. If the platform lacks Power7

 ///   extensions, then the GNUmakefile sets <tt>-DCRYPTOPP_DISABLE_POWER7</tt>.

 /// \note This function is only available on PowerPC and PowerPC-64 platforms

@@ -642,7 +644,7 @@ inline bool HasPower7()
 /// \details Runtime support requires compile time support. When compiling with GCC, you may

 ///   need to compile with <tt>-mcpu=power8</tt>; while IBM XL C/C++ compilers require

 ///   <tt>-qarch=pwr8 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

-/// \details Atilvec was first available on Power4 platforms. However Crypto++ releies heavily

+/// \details Atilvec was first available in the early 2000's. However Crypto++ releies heavily

 ///   on unaligned loads and stores which is a Power7 feature. If the platform lacks Power7

 ///   extensions, then the GNUmakefile sets <tt>-DCRYPTOPP_DISABLE_POWER7</tt>.

 /// \note This function is only available on PowerPC and PowerPC-64 platforms

@@ -653,6 +655,23 @@ inline bool HasPower8()
 	return g_hasPower8;

 }

 

+/// \brief Determine if a PowerPC processor has Power9 available

+/// \returns true if the hardware is capable of Power9 at runtime, false otherwise.

+/// \details Altivec instructions are available under most modern PowerPCs.

+/// \details Runtime support requires compile time support. When compiling with GCC, you may

+///   need to compile with <tt>-mcpu=power9</tt>; while IBM XL C/C++ compilers require

+///   <tt>-qarch=pwr9 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

+/// \details Atilvec was first available in the early 2000's. However Crypto++ releies heavily

+///   on unaligned loads and stores which is a Power7 feature. If the platform lacks Power7

+///   extensions, then the GNUmakefile sets <tt>-DCRYPTOPP_DISABLE_POWER7</tt>.

+/// \note This function is only available on PowerPC and PowerPC-64 platforms

+inline bool HasPower9()

+{

+	if (!g_PowerpcDetectionDone)

+		DetectPowerpcFeatures();

+	return g_hasPower9;

+}

+

 /// \brief Determine if a PowerPC processor has AES available

 /// \returns true if the hardware is capable of AES at runtime, false otherwise.

 /// \details AES is part of the in-crypto extensions on Power8 and Power9.

@@ -709,6 +728,23 @@ inline bool HasSHA512()
 	return g_hasSHA512;

 }

 

+/// \brief Determine if a PowerPC processor has DARN available

+/// \returns true if the hardware is capable of DARN at runtime, false otherwise.

+/// \details Altivec instructions are available under most modern PowerPCs.

+/// \details Runtime support requires compile time support. When compiling with GCC, you may

+///   need to compile with <tt>-mcpu=power9</tt>; while IBM XL C/C++ compilers require

+///   <tt>-qarch=pwr9 -qaltivec</tt>. Also see PowerPC's <tt>_ALTIVEC_</tt> preprocessor macro.

+/// \details Atilvec was first available in the early 2000's. However Crypto++ relies heavily

+///   on unaligned loads and stores which is a Power7 feature. If the platform lacks Power7

+///   extensions, then the GNUmakefile sets <tt>-DCRYPTOPP_DISABLE_POWER7</tt>.

+/// \note This function is only available on PowerPC and PowerPC-64 platforms

+inline bool HasDARN()

+{

+	if (!g_PowerpcDetectionDone)

+		DetectPowerpcFeatures();

+	return g_hasDARN;

+}

+

 /// \brief Provides the cache line size

 /// \returns lower bound on the size of a cache line in bytes, if available

 /// \details GetCacheLineSize() returns the lower bound on the size of a cache line, if it