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Add VecLoadAligned for PowerPC

pull/748/head
Jeffrey Walton 2018-11-24 01:27:44 -05:00
parent 727de927cc
commit 51fea1a15e
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1 changed files with 56 additions and 0 deletions
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ppc_simd.h
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@ -323,6 +323,62 @@ inline uint64x2_p VecLoad(int off, const word64 src[2])
#endif // _ARCH_PWR8
/// \brief Loads a vector from an aligned byte array
/// \param src the byte array
/// \details VecLoadAligned loads a vector in from an aligned byte array.
/// \details VecLoadAligned uses POWER7's <tt>vec_xl</tt> or
/// <tt>vec_vsx_ld</tt> if available. The instructions do not require
/// aligned effective memory addresses. Altivec's <tt>vec_ld</tt> is used
/// if POWER7 is not available. The effective address of <tt>src</tt> must
/// be aligned.
/// \par Wraps
/// vec_ld, vec_xlw4, vec_xld2, vec_xl, vec_vsx_ld
/// \since Crypto++ 8.0
inline uint32x4_p VecLoadAligned(const byte src[16])
{
#if defined(_ARCH_PWR7)
# if defined(__early_xlc__) || defined(__early_xlC__)
return (uint32x4_p)vec_xlw4(0, (byte*)src);
# elif defined(__xlc__) || defined(__xlC__) || defined(__clang__)
return (uint32x4_p)vec_xl(0, (byte*)src);
# else
return (uint32x4_p)vec_vsx_ld(0, (byte*)src);
# endif
#else // _ARCH_PWR7
CRYPTOPP_ASSERT(((uintptr_t)src) % 16 == 0);
return (uint32x4_p)vec_ld(0, (byte*)src);
#endif // _ARCH_PWR7
}
/// \brief Loads a vector from an aligned byte array
/// \param src the byte array
/// \param off offset into the byte array
/// \details VecLoadAligned loads a vector in from an aligned byte array.
/// \details VecLoadAligned uses POWER7's <tt>vec_xl</tt> or
/// <tt>vec_vsx_ld</tt> if available. The instructions do not require
/// aligned effective memory addresses. Altivec's <tt>vec_ld</tt> is used
/// if POWER7 is not available. The effective address of <tt>src</tt> must
/// be aligned.
/// \par Wraps
/// vec_ld, vec_xlw4, vec_xld2, vec_xl, vec_vsx_ld
/// \since Crypto++ 8.0
inline uint32x4_p VecLoadAligned(int off, const byte src[16])
{
#if defined(_ARCH_PWR7)
# if defined(__early_xlc__) || defined(__early_xlC__)
return (uint32x4_p)vec_xlw4(off, (byte*)src);
# elif defined(__xlc__) || defined(__xlC__) || defined(__clang__)
return (uint32x4_p)vec_xl(off, (byte*)src);
# else
return (uint32x4_p)vec_vsx_ld(off, (byte*)src);
# endif
#else // _ARCH_PWR7
CRYPTOPP_ASSERT((((uintptr_t)src)+off) % 16 == 0);
return (uint32x4_p)vec_ld(off, (byte*)src);
#endif // _ARCH_PWR7
}
/// \brief Loads a vector from a byte array
/// \param src the byte array
/// \details VecLoadBE loads a vector in from a byte array. VecLoadBE