diff options
Diffstat (limited to 'library/stdarch/crates/core_arch/src/x86_64/macros.rs')
-rw-r--r-- | library/stdarch/crates/core_arch/src/x86_64/macros.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/library/stdarch/crates/core_arch/src/x86_64/macros.rs b/library/stdarch/crates/core_arch/src/x86_64/macros.rs new file mode 100644 index 000000000..a3ea0e821 --- /dev/null +++ b/library/stdarch/crates/core_arch/src/x86_64/macros.rs @@ -0,0 +1,36 @@ +//! Utility macros. + +// Helper struct used to trigger const eval errors when the const generic immediate value `imm` is +// not a round number. +pub(crate) struct ValidateConstRound<const IMM: i32>; +impl<const IMM: i32> ValidateConstRound<IMM> { + pub(crate) const VALID: () = { + assert!( + IMM == 4 || IMM == 8 || IMM == 9 || IMM == 10 || IMM == 11, + "Invalid IMM value" + ); + }; +} + +#[allow(unused)] +macro_rules! static_assert_rounding { + ($imm:ident) => { + let _ = $crate::core_arch::x86_64::macros::ValidateConstRound::<$imm>::VALID; + }; +} + +// Helper struct used to trigger const eval errors when the const generic immediate value `imm` is +// not a sae number. +pub(crate) struct ValidateConstSae<const IMM: i32>; +impl<const IMM: i32> ValidateConstSae<IMM> { + pub(crate) const VALID: () = { + assert!(IMM == 4 || IMM == 8, "Invalid IMM value"); + }; +} + +#[allow(unused)] +macro_rules! static_assert_sae { + ($imm:ident) => { + let _ = $crate::core_arch::x86_64::macros::ValidateConstSae::<$imm>::VALID; + }; +} |