| //! ARM intrinsics. |
| //! |
| //! The reference for NEON is [ARM's NEON Intrinsics Reference][arm_ref]. The |
| //! [ARM's NEON Intrinsics Online Database][arm_dat] is also useful. |
| //! |
| //! [arm_ref]: http://infocenter.arm.com/help/topic/com.arm.doc.ihi0073a/IHI0073A_arm_neon_intrinsics_ref.pdf |
| //! [arm_dat]: https://developer.arm.com/technologies/neon/intrinsics |
| |
| mod armclang; |
| pub use self::armclang::*; |
| |
| mod v6; |
| pub use self::v6::*; |
| |
| // Supported arches: 6, 7-M. See Section 10.1 of ACLE (e.g. SSAT) |
| #[cfg(any(target_feature = "v6", doc))] |
| mod sat; |
| |
| #[cfg(any(target_feature = "v6", doc))] |
| pub use self::sat::*; |
| |
| // Supported arches: 5TE, 7E-M. See Section 10.1 of ACLE (e.g. QADD) |
| // We also include the A profile even though DSP is deprecated on that profile as of ACLE 2.0 (see |
| // section 5.4.7) |
| // Here we workaround the difference between LLVM's +dsp and ACLE's __ARM_FEATURE_DSP by gating on |
| // '+v5te' rather than on '+dsp' |
| #[cfg(any( |
| // >= v5TE but excludes v7-M |
| all(target_feature = "v5te", not(target_feature = "mclass")), |
| // v7E-M |
| all(target_feature = "mclass", target_feature = "dsp"), |
| doc, |
| ))] |
| pub mod dsp; |
| |
| #[cfg(any( |
| // >= v5TE but excludes v7-M |
| all(target_feature = "v5te", not(target_feature = "mclass")), |
| // v7E-M |
| all(target_feature = "mclass", target_feature = "dsp"), |
| doc, |
| ))] |
| pub use self::dsp::*; |
| |
| // Deprecated in ACLE 2.0 for the A profile but fully supported on the M and R profiles, says |
| // Section 5.4.9 of ACLE. We'll expose these for the A profile even if deprecated |
| #[cfg(any( |
| // v7-A, v7-R |
| all(target_feature = "v6", not(target_feature = "mclass")), |
| // v7E-M |
| all(target_feature = "mclass", target_feature = "dsp"), |
| doc, |
| ))] |
| mod simd32; |
| |
| #[cfg(any( |
| // v7-A, v7-R |
| all(target_feature = "v6", not(target_feature = "mclass")), |
| // v7E-M |
| all(target_feature = "mclass", target_feature = "dsp"), |
| doc, |
| ))] |
| pub use self::simd32::*; |
| |
| #[cfg(any(target_feature = "v7", doc))] |
| mod v7; |
| #[cfg(any(target_feature = "v7", doc))] |
| pub use self::v7::*; |
| |
| mod ex; |
| pub use self::ex::*; |
| |
| pub use crate::core_arch::arm_shared::*; |
| |
| #[cfg(test)] |
| use stdarch_test::assert_instr; |
| |
| #[cfg(any(target_feature = "v7", doc))] |
| pub(crate) mod neon; |
| #[cfg(any(target_feature = "v7", doc))] |
| pub use neon::*; |
| |
| /// Generates the trap instruction `UDF` |
| #[cfg(target_arch = "arm")] |
| #[cfg_attr(test, assert_instr(udf))] |
| #[inline] |
| pub unsafe fn udf() -> ! { |
| crate::intrinsics::abort() |
| } |
| |
| /// Generates a DBG instruction. |
| /// |
| /// This provides a hint to debugging and related systems. The argument must be |
| /// a constant integer from 0 to 15 inclusive. See implementation documentation |
| /// for the effect (if any) of this instruction and the meaning of the |
| /// argument. This is available only when compiling for AArch32. |
| // Section 10.1 of ACLE says that the supported arches are: 7, 7-M |
| // "The DBG hint instruction is added in ARMv7. It is UNDEFINED in the ARMv6 base architecture, and |
| // executes as a NOP instruction in ARMv6K and ARMv6T2." - ARM Architecture Reference Manual ARMv7-A |
| // and ARMv7-R edition (ARM DDI 0406C.c) sections D12.4.1 "ARM instruction set support" and D12.4.2 |
| // "Thumb instruction set support" |
| #[cfg(any(target_feature = "v7", doc))] |
| #[inline(always)] |
| #[rustc_legacy_const_generics(0)] |
| pub unsafe fn __dbg<const IMM4: i32>() { |
| static_assert_imm4!(IMM4); |
| dbg(IMM4); |
| } |
| |
| extern "unadjusted" { |
| #[link_name = "llvm.arm.dbg"] |
| fn dbg(_: i32); |
| } |
