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//! CPU Halt Operations
pub fn halt() void {
asm volatile ("hlt");
}
pub fn halt_loop() noreturn {
while (true) {
halt();
}
}
pub fn enable_interrupts() void {
asm volatile ("sti");
}
pub fn disable_interrupts() void {
asm volatile ("cli");
}
pub fn are_interrupts_enabled() bool {
const flags = read_flags();
return (flags & 0x200) != 0;
}
pub fn read_flags() u64 {
var result: u64 = undefined;
asm volatile ("pushfq; pop %[result]"
: [result] "=r" (result),
);
return result;
}
pub fn pause() void {
asm volatile ("pause");
}
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