kernel/src/syscall/clock.rs at main

lewis.moe / lancer

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lancer / kernel / src / syscall / clock.rs

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lewis.moe Latest 4w ago

4952bbae

 1use crate::proc::context::CpuContext;
 2use crate::syscall::SyscallResult;
 3use crate::wcet::tsc;
 4
 5pub fn sys_clock_monotonic_ms(ctx: &mut CpuContext) {
 6    let tsc_now = tsc::read_tsc();
 7    let freq = tsc::freq_hz();
 8    let ms = tsc_now / (freq / 1000);
 9    ctx.rax = SyscallResult::success(ms).raw();
10}