sha.rs.html -- source
Description: Source to the Rust file `src/libcore/../stdsimd/crates/core_arch/src/x86/sha.rs`.
Keywords: rust, rustlang, rust-lang

      1
      2
      3
      4
      5
      6
      7
      8
      9
     10
     11
     12
     13
     14
     15
     16
     17
     18
     19
     20
     21
     22
     23
     24
     25
     26
     27
     28
     29
     30
     31
     32
     33
     34
     35
     36
     37
     38
     39
     40
     41
     42
     43
     44
     45
     46
     47
     48
     49
     50
     51
     52
     53
     54
     55
     56
     57
     58
     59
     60
     61
     62
     63
     64
     65
     66
     67
     68
     69
     70
     71
     72
     73
     74
     75
     76
     77
     78
     79
     80
     81
     82
     83
     84
     85
     86
     87
     88
     89
     90
     91
     92
     93
     94
     95
     96
     97
     98
     99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    165
    166
    167
    168
    169
    170
    171
    172
    173
    174
    175
    176
    177
    178
    179
    180
    181
    182
    183
    184
    185
    186
    187
    188
    189
    190
    191
    192
    193
    194
    195
    196
    197
    198
    199
    200
    201
    202
    203
    204
    205
    206
    207
    208
    209
    210
    211
    212
    213
    214
    215
    216
    217
    218
    219
    220
    221
    222
    223
    224

    use crate::{
        core_arch::{simd::*, x86::*},
        mem::transmute,
    };

    #[allow(improper_ctypes)]
    extern "C" {
        #[link_name = "llvm.x86.sha1msg1"]
        fn sha1msg1(a: i32x4, b: i32x4) -> i32x4;
        #[link_name = "llvm.x86.sha1msg2"]
        fn sha1msg2(a: i32x4, b: i32x4) -> i32x4;
        #[link_name = "llvm.x86.sha1nexte"]
        fn sha1nexte(a: i32x4, b: i32x4) -> i32x4;
        #[link_name = "llvm.x86.sha1rnds4"]
        fn sha1rnds4(a: i32x4, b: i32x4, c: i8) -> i32x4;
        #[link_name = "llvm.x86.sha256msg1"]
        fn sha256msg1(a: i32x4, b: i32x4) -> i32x4;
        #[link_name = "llvm.x86.sha256msg2"]
        fn sha256msg2(a: i32x4, b: i32x4) -> i32x4;
        #[link_name = "llvm.x86.sha256rnds2"]
        fn sha256rnds2(a: i32x4, b: i32x4, k: i32x4) -> i32x4;
    }

    #[cfg(test)]
    use stdsimd_test::assert_instr;

    /// Performs an intermediate calculation for the next four SHA1 message values
    /// (unsigned 32-bit integers) using previous message values from `a` and `b`,
    /// and returning the result.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha1msg1_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha1msg1))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha1msg1_epu32(a: __m128i, b: __m128i) -> __m128i {
        transmute(sha1msg1(a.as_i32x4(), b.as_i32x4()))
    }

    /// Performs the final calculation for the next four SHA1 message values
    /// (unsigned 32-bit integers) using the intermediate result in `a` and the
    /// previous message values in `b`, and returns the result.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha1msg2_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha1msg2))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha1msg2_epu32(a: __m128i, b: __m128i) -> __m128i {
        transmute(sha1msg2(a.as_i32x4(), b.as_i32x4()))
    }

    /// Calculate SHA1 state variable E after four rounds of operation from the
    /// current SHA1 state variable `a`, add that value to the scheduled values
    /// (unsigned 32-bit integers) in `b`, and returns the result.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha1nexte_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha1nexte))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha1nexte_epu32(a: __m128i, b: __m128i) -> __m128i {
        transmute(sha1nexte(a.as_i32x4(), b.as_i32x4()))
    }

    /// Performs four rounds of SHA1 operation using an initial SHA1 state (A,B,C,D)
    /// from `a` and some pre-computed sum of the next 4 round message values
    /// (unsigned 32-bit integers), and state variable E from `b`, and return the
    /// updated SHA1 state (A,B,C,D). `func` contains the logic functions and round
    /// constants.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha1rnds4_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha1rnds4, func = 0))]
    #[rustc_args_required_const(2)]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha1rnds4_epu32(a: __m128i, b: __m128i, func: i32) -> __m128i {
        let a = a.as_i32x4();
        let b = b.as_i32x4();
        macro_rules! call {
            ($imm2:expr) => {
                sha1rnds4(a, b, $imm2)
            };
        }
        let ret = constify_imm2!(func, call);
        transmute(ret)
    }

    /// Performs an intermediate calculation for the next four SHA256 message values
    /// (unsigned 32-bit integers) using previous message values from `a` and `b`,
    /// and return the result.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha256msg1_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha256msg1))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha256msg1_epu32(a: __m128i, b: __m128i) -> __m128i {
        transmute(sha256msg1(a.as_i32x4(), b.as_i32x4()))
    }

    /// Performs the final calculation for the next four SHA256 message values
    /// (unsigned 32-bit integers) using previous message values from `a` and `b`,
    /// and return the result.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha256msg2_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha256msg2))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha256msg2_epu32(a: __m128i, b: __m128i) -> __m128i {
        transmute(sha256msg2(a.as_i32x4(), b.as_i32x4()))
    }

    /// Performs 2 rounds of SHA256 operation using an initial SHA256 state
    /// (C,D,G,H) from `a`, an initial SHA256 state (A,B,E,F) from `b`, and a
    /// pre-computed sum of the next 2 round message values (unsigned 32-bit
    /// integers) and the corresponding round constants from `k`, and store the
    /// updated SHA256 state (A,B,E,F) in dst.
    ///
    /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_sha256rnds2_epu32)
    #[inline]
    #[target_feature(enable = "sha")]
    #[cfg_attr(test, assert_instr(sha256rnds2))]
    #[stable(feature = "simd_x86", since = "1.27.0")]
    pub unsafe fn _mm_sha256rnds2_epu32(a: __m128i, b: __m128i, k: __m128i) -> __m128i {
        transmute(sha256rnds2(a.as_i32x4(), b.as_i32x4(), k.as_i32x4()))
    }

    #[cfg(test)]
    mod tests {
        use std::f32;
        use std::f64::{self, NAN};
        use std::i32;
        use std::mem::{self, transmute};

        use crate::core_arch::{simd::*, x86::*};
        use stdsimd_test::simd_test;
        use test::black_box; // Used to inhibit constant-folding.

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha1msg1_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0x98829f34f74ad457, 0xda2b1a44d0b5ad3c);
            let r = _mm_sha1msg1_epu32(a, b);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha1msg2_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0xf714b202d863d47d, 0x90c30d946b3d3b35);
            let r = _mm_sha1msg2_epu32(a, b);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha1nexte_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0x2589d5be923f82a4, 0x59f111f13956c25b);
            let r = _mm_sha1nexte_epu32(a, b);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha1rnds4_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0x32b13cd8322f5268, 0xc54420862bd9246f);
            let r = _mm_sha1rnds4_epu32(a, b, 0);
            assert_eq_m128i(r, expected);

            let expected = _mm_set_epi64x(0x6d4c43e56a3c25d9, 0xa7e00fb775cbd3fe);
            let r = _mm_sha1rnds4_epu32(a, b, 1);
            assert_eq_m128i(r, expected);

            let expected = _mm_set_epi64x(0xb304e383c01222f4, 0x66f6b3b1f89d8001);
            let r = _mm_sha1rnds4_epu32(a, b, 2);
            assert_eq_m128i(r, expected);

            let expected = _mm_set_epi64x(0x8189b758bfabfa79, 0xdb08f6e78cae098b);
            let r = _mm_sha1rnds4_epu32(a, b, 3);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha256msg1_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0xeb84973fd5cda67d, 0x2857b88f406b09ee);
            let r = _mm_sha256msg1_epu32(a, b);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha256msg2_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let expected = _mm_set_epi64x(0xb58777ce887fd851, 0x15d1ec8b73ac8450);
            let r = _mm_sha256msg2_epu32(a, b);
            assert_eq_m128i(r, expected);
        }

        #[simd_test(enable = "sha")]
        #[allow(overflowing_literals)]
        unsafe fn test_mm_sha256rnds2_epu32() {
            let a = _mm_set_epi64x(0xe9b5dba5b5c0fbcf, 0x71374491428a2f98);
            let b = _mm_set_epi64x(0xab1c5ed5923f82a4, 0x59f111f13956c25b);
            let k = _mm_set_epi64x(0, 0x12835b01d807aa98);
            let expected = _mm_set_epi64x(0xd3063037effb15ea, 0x187ee3db0d6d1d19);
            let r = _mm_sha256rnds2_epu32(a, b, k);
            assert_eq_m128i(r, expected);
        }
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)