Add read_rflags()

2023-11-25 13:02:27 -05:00 · 2023-11-25 13:02:27 -05:00 · d100ab53a8
commit d100ab53a8
parent 35e5aa2ee5
1 changed files with 8 additions and 0 deletions
--- a/src/hulk/cpu.d
+++ b/src/hulk/cpu.d
@ -216,6 +216,14 @@ void write_cr4(ulong v)
    __asm("mov $0, %cr4", "r", v);
 }

+ulong read_rflags()
+{
+    return __asm!ulong(`
+            pushf
+            mov (%rsp), %rax
+            add $$8, %rsp`, "={rax}");
+}
+
 ulong rdmsr(uint msr)
 {
    return __asm!ulong(`