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-rw-r--r--src/arch/x86_64/mod.rs16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/arch/x86_64/mod.rs b/src/arch/x86_64/mod.rs
index ee51338..38b08b1 100644
--- a/src/arch/x86_64/mod.rs
+++ b/src/arch/x86_64/mod.rs
@@ -4,3 +4,19 @@ pub mod io_port;
pub mod mem;
pub mod misc;
pub mod paging;
+use core::arch::asm;
+
+pub const RFLAGS_IF_MASK: u64 = 1 << 9;
+#[inline]
+pub fn read_rflags() -> u64 {
+ let rflags;
+ unsafe {
+ asm!("pushfq; popq {}", out(reg) rflags);
+ }
+ rflags
+}
+
+pub fn is_int_enabled() -> bool {
+ let rf = read_rflags();
+ return (rf & RFLAGS_IF_MASK) != 0;
+}