ptos/amd64+hal: Add processor primitives

Signed-off-by: Chloe M <chloe@mensia.org>
2026-07-10 21:07:24 -04:00
parent eb009076b2
commit abad8f8cfe
2 changed files with 90 additions and 0 deletions
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: Processor primitives
+ * Author:      Chloe M.
+ */
+
+#ifndef _HAL_PRIM_H_
+#define _HAL_PRIM_H_ 1
+
+#include <machine/prim.h>
+#include <ptdef.h>
+
+/*
+ * Suspend the current processor until the next
+ * interrupt.
+ */
+ALWAYS_INLINE static inline VOID
+HalCpuSuspend(VOID)
+{
+    MdCpuSuspend();
+}
+
+/*
+ * Hint to the processor core that it is in a spin
+ * loop.
+ */
+ALWAYS_INLINE static inline VOID
+HalCpuSpinWait(VOID)
+{
+    MdCpuSpinWait();
+}
+
+/*
+ * Perform an atomic swap operation
+ *
+ * @Ptr:   Location to swap with @Value
+ * @Value: Value to swap with data at @Ptr
+ */
+ALWAYS_INLINE static inline VOID
+HalCpuAswap(UQUAD *Ptr, UQUAD Value)
+{
+    MdCpuAswap(Ptr, Value);
+}
+
+#endif  /* !_HAL_PRIM_H_ */