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//! AES New Instructions (AES-NI)
//!
//! The intrinsics here correspond to those in the `wmmintrin.h` C header.
//!
//! The reference is [Intel 64 and IA-32 Architectures Software Developer's
//! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
//!
//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
use crate::core_arch::x86::__m128i;
#[cfg(test)]
use stdarch_test::assert_instr;
#[allow(improper_ctypes)]
extern "C" {
#[link_name = "llvm.x86.aesni.aesdec"]
fn aesdec(a: __m128i, round_key: __m128i) -> __m128i;
#[link_name = "llvm.x86.aesni.aesdeclast"]
fn aesdeclast(a: __m128i, round_key: __m128i) -> __m128i;
#[link_name = "llvm.x86.aesni.aesenc"]
fn aesenc(a: __m128i, round_key: __m128i) -> __m128i;
#[link_name = "llvm.x86.aesni.aesenclast"]
fn aesenclast(a: __m128i, round_key: __m128i) -> __m128i;
#[link_name = "llvm.x86.aesni.aesimc"]
fn aesimc(a: __m128i) -> __m128i;
#[link_name = "llvm.x86.aesni.aeskeygenassist"]
fn aeskeygenassist(a: __m128i, imm8: u8) -> __m128i;
}
/// Performs one round of an AES decryption flow on data (state) in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aesdec_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aesdec))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aesdec_si128(a: __m128i, round_key: __m128i) -> __m128i {
aesdec(a, round_key)
}
/// Performs the last round of an AES decryption flow on data (state) in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aesdeclast_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aesdeclast))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aesdeclast_si128(a: __m128i, round_key: __m128i) -> __m128i {
aesdeclast(a, round_key)
}
/// Performs one round of an AES encryption flow on data (state) in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aesenc_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aesenc))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aesenc_si128(a: __m128i, round_key: __m128i) -> __m128i {
aesenc(a, round_key)
}
/// Performs the last round of an AES encryption flow on data (state) in `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aesenclast_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aesenclast))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aesenclast_si128(a: __m128i, round_key: __m128i) -> __m128i {
aesenclast(a, round_key)
}
/// Performs the `InvMixColumns` transformation on `a`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aesimc_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aesimc))]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aesimc_si128(a: __m128i) -> __m128i {
aesimc(a)
}
/// Assist in expanding the AES cipher key.
///
/// Assist in expanding the AES cipher key by computing steps towards
/// generating a round key for encryption cipher using data from `a` and an
/// 8-bit round constant `IMM8`.
///
/// [Intel's documentation](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_aeskeygenassist_si128)
#[inline]
#[target_feature(enable = "aes")]
#[cfg_attr(test, assert_instr(aeskeygenassist, IMM8 = 0))]
#[rustc_legacy_const_generics(1)]
#[stable(feature = "simd_x86", since = "1.27.0")]
pub unsafe fn _mm_aeskeygenassist_si128<const IMM8: i32>(a: __m128i) -> __m128i {
static_assert_uimm_bits!(IMM8, 8);
aeskeygenassist(a, IMM8 as u8)
}
#[cfg(test)]
mod tests {
// The constants in the tests below are just bit patterns. They should not
// be interpreted as integers; signedness does not make sense for them, but
// __m128i happens to be defined in terms of signed integers.
#![allow(overflowing_literals)]
use stdarch_test::simd_test;
use crate::core_arch::x86::*;
#[simd_test(enable = "aes")]
unsafe fn test_mm_aesdec_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc664949.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let k = _mm_set_epi64x(0x1133557799bbddff, 0x0022446688aaccee);
let e = _mm_set_epi64x(0x044e4f5176fec48f, 0xb57ecfa381da39ee);
let r = _mm_aesdec_si128(a, k);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "aes")]
unsafe fn test_mm_aesdeclast_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc714178.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let k = _mm_set_epi64x(0x1133557799bbddff, 0x0022446688aaccee);
let e = _mm_set_epi64x(0x36cad57d9072bf9e, 0xf210dd981fa4a493);
let r = _mm_aesdeclast_si128(a, k);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "aes")]
unsafe fn test_mm_aesenc_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc664810.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let k = _mm_set_epi64x(0x1133557799bbddff, 0x0022446688aaccee);
let e = _mm_set_epi64x(0x16ab0e57dfc442ed, 0x28e4ee1884504333);
let r = _mm_aesenc_si128(a, k);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "aes")]
unsafe fn test_mm_aesenclast_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc714136.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let k = _mm_set_epi64x(0x1133557799bbddff, 0x0022446688aaccee);
let e = _mm_set_epi64x(0xb6dd7df25d7ab320, 0x4b04f98cf4c860f8);
let r = _mm_aesenclast_si128(a, k);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "aes")]
unsafe fn test_mm_aesimc_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc714195.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let e = _mm_set_epi64x(0xc66c82284ee40aa0, 0x6633441122770055);
let r = _mm_aesimc_si128(a);
assert_eq_m128i(r, e);
}
#[simd_test(enable = "aes")]
unsafe fn test_mm_aeskeygenassist_si128() {
// Constants taken from https://msdn.microsoft.com/en-us/library/cc714138.aspx.
let a = _mm_set_epi64x(0x0123456789abcdef, 0x8899aabbccddeeff);
let e = _mm_set_epi64x(0x857c266b7c266e85, 0xeac4eea9c4eeacea);
let r = _mm_aeskeygenassist_si128::<5>(a);
assert_eq_m128i(r, e);
}
}
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