core/stdarch/crates/core_arch/src/loongarch64/
mod.rs

1//! `LoongArch64` intrinsics
2
3mod lasx;
4mod lsx;
5
6#[unstable(feature = "stdarch_loongarch", issue = "117427")]
7pub use self::lasx::*;
8#[unstable(feature = "stdarch_loongarch", issue = "117427")]
9pub use self::lsx::*;
10
11use crate::arch::asm;
12
13/// Reads the 64-bit stable counter value and the counter ID
14#[inline]
15#[unstable(feature = "stdarch_loongarch", issue = "117427")]
16pub fn rdtime_d() -> (i64, isize) {
17    let (val, tid): (i64, isize);
18    unsafe { asm!("rdtime.d {}, {}", out(reg) val, out(reg) tid, options(readonly, nostack)) };
19    (val, tid)
20}
21
22#[allow(improper_ctypes)]
23unsafe extern "unadjusted" {
24    #[link_name = "llvm.loongarch.crc.w.d.w"]
25    fn __crc_w_d_w(a: i64, b: i32) -> i32;
26    #[link_name = "llvm.loongarch.crcc.w.d.w"]
27    fn __crcc_w_d_w(a: i64, b: i32) -> i32;
28    #[link_name = "llvm.loongarch.cacop.d"]
29    fn __cacop(a: i64, b: i64, c: i64);
30    #[link_name = "llvm.loongarch.csrrd.d"]
31    fn __csrrd(a: i32) -> i64;
32    #[link_name = "llvm.loongarch.csrwr.d"]
33    fn __csrwr(a: i64, b: i32) -> i64;
34    #[link_name = "llvm.loongarch.csrxchg.d"]
35    fn __csrxchg(a: i64, b: i64, c: i32) -> i64;
36    #[link_name = "llvm.loongarch.iocsrrd.d"]
37    fn __iocsrrd_d(a: i32) -> i64;
38    #[link_name = "llvm.loongarch.iocsrwr.d"]
39    fn __iocsrwr_d(a: i64, b: i32);
40    #[link_name = "llvm.loongarch.asrtle.d"]
41    fn __asrtle(a: i64, b: i64);
42    #[link_name = "llvm.loongarch.asrtgt.d"]
43    fn __asrtgt(a: i64, b: i64);
44    #[link_name = "llvm.loongarch.lddir.d"]
45    fn __lddir(a: i64, b: i64) -> i64;
46    #[link_name = "llvm.loongarch.ldpte.d"]
47    fn __ldpte(a: i64, b: i64);
48}
49
50/// Calculate the CRC value using the IEEE 802.3 polynomial (0xEDB88320)
51#[inline]
52#[unstable(feature = "stdarch_loongarch", issue = "117427")]
53pub fn crc_w_d_w(a: i64, b: i32) -> i32 {
54    unsafe { __crc_w_d_w(a, b) }
55}
56
57/// Calculate the CRC value using the Castagnoli polynomial (0x82F63B78)
58#[inline]
59#[unstable(feature = "stdarch_loongarch", issue = "117427")]
60pub fn crcc_w_d_w(a: i64, b: i32) -> i32 {
61    unsafe { __crcc_w_d_w(a, b) }
62}
63
64/// Generates the cache operation instruction
65#[inline]
66#[unstable(feature = "stdarch_loongarch", issue = "117427")]
67pub unsafe fn cacop<const IMM12: i64>(a: i64, b: i64) {
68    static_assert_simm_bits!(IMM12, 12);
69    __cacop(a, b, IMM12);
70}
71
72/// Reads the CSR
73#[inline]
74#[unstable(feature = "stdarch_loongarch", issue = "117427")]
75pub unsafe fn csrrd<const IMM14: i32>() -> i64 {
76    static_assert_uimm_bits!(IMM14, 14);
77    __csrrd(IMM14)
78}
79
80/// Writes the CSR
81#[inline]
82#[unstable(feature = "stdarch_loongarch", issue = "117427")]
83pub unsafe fn csrwr<const IMM14: i32>(a: i64) -> i64 {
84    static_assert_uimm_bits!(IMM14, 14);
85    __csrwr(a, IMM14)
86}
87
88/// Exchanges the CSR
89#[inline]
90#[unstable(feature = "stdarch_loongarch", issue = "117427")]
91pub unsafe fn csrxchg<const IMM14: i32>(a: i64, b: i64) -> i64 {
92    static_assert_uimm_bits!(IMM14, 14);
93    __csrxchg(a, b, IMM14)
94}
95
96/// Reads the 64-bit IO-CSR
97#[inline]
98#[unstable(feature = "stdarch_loongarch", issue = "117427")]
99pub unsafe fn iocsrrd_d(a: i32) -> i64 {
100    __iocsrrd_d(a)
101}
102
103/// Writes the 64-bit IO-CSR
104#[inline]
105#[unstable(feature = "stdarch_loongarch", issue = "117427")]
106pub unsafe fn iocsrwr_d(a: i64, b: i32) {
107    __iocsrwr_d(a, b)
108}
109
110/// Generates the less-than-or-equal asseration instruction
111#[inline]
112#[unstable(feature = "stdarch_loongarch", issue = "117427")]
113pub unsafe fn asrtle(a: i64, b: i64) {
114    __asrtle(a, b);
115}
116
117/// Generates the greater-than asseration instruction
118#[inline]
119#[unstable(feature = "stdarch_loongarch", issue = "117427")]
120pub unsafe fn asrtgt(a: i64, b: i64) {
121    __asrtgt(a, b);
122}
123
124/// Loads the page table directory entry
125#[inline]
126#[rustc_legacy_const_generics(1)]
127#[unstable(feature = "stdarch_loongarch", issue = "117427")]
128pub unsafe fn lddir<const B: i64>(a: i64) -> i64 {
129    __lddir(a, B)
130}
131
132/// Loads the page table entry
133#[inline]
134#[rustc_legacy_const_generics(1)]
135#[unstable(feature = "stdarch_loongarch", issue = "117427")]
136pub unsafe fn ldpte<const B: i64>(a: i64) {
137    __ldpte(a, B)
138}