From 372b7265f12bbfa784482f0c9d6e01676df8b83b Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Fri, 18 Mar 2022 10:51:35 -0400
Subject: [PATCH] Add src/common/hos/cpu.d

---
 src/common/hos/cpu.d | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/common/hos/cpu.d

diff --git a/src/common/hos/cpu.d b/src/common/hos/cpu.d
new file mode 100644
index 0000000..536330b
--- /dev/null
+++ b/src/common/hos/cpu.d
@@ -0,0 +1,21 @@
+import ldc.llvmasm;
+
+ulong read_cr0()
+{
+    return __asm!ulong("mov %cr0, %rax", "={rax}");
+}
+
+ulong read_cr2()
+{
+    return __asm!ulong("mov %cr2, %rax", "={rax}");
+}
+
+ulong read_cr3()
+{
+    return __asm!ulong("mov %cr3, %rax", "={rax}");
+}
+
+ulong read_cr4()
+{
+    return __asm!ulong("mov %cr4, %rax", "={rax}");
+}