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Implement Instant for UEFI

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- Uses Timestamp Protocol if present. Else use rdtsc for x86 and x86-64

Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>
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Ayush Singh 2024-02-11 00:01:43 +05:30
parent 5f40394baa
commit dee2d0f333
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2 changed files with 120 additions and 0 deletions
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4
library/std/src/lib.rs
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@ -263,6 +263,10 @@
#![cfg_attr(any(windows, target_os = "uefi"), feature(round_char_boundary))]
#![cfg_attr(target_os = "xous", feature(slice_ptr_len))]
#![cfg_attr(target_family = "wasm", feature(stdarch_wasm_atomic_wait))]
#![cfg_attr(
all(any(target_arch = "x86_64", target_arch = "x86"), target_os = "uefi"),
feature(stdarch_x86_has_cpuid)
)]
//
// Language features:
// tidy-alphabetical-start