From a524eb3846aac4d1b38f08cba49ff3503107042f Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Thu, 3 Apr 2025 12:31:21 -0400
Subject: move old kernel code (for now) into kernel/old, trying to get long
 mode

---
 kernel/old/include/bindings.h | 73 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 kernel/old/include/bindings.h

(limited to 'kernel/old/include/bindings.h')

diff --git a/kernel/old/include/bindings.h b/kernel/old/include/bindings.h
new file mode 100644
index 0000000..365abc9
--- /dev/null
+++ b/kernel/old/include/bindings.h
@@ -0,0 +1,73 @@
+/**
+ * @file bindings.h
+ * @author Freya Murphy <freya@freyacat.org>
+ *
+ * C-style function definitions binded to their named assembly instruction.
+ */
+
+#ifndef _BINDINGS_H
+#define _BINDINGS_H
+#include <types.h>
+
+static inline uint8_t inb(uint16_t port)
+{
+	uint8_t ret;
+	__asm__ volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outb(uint16_t port, uint8_t val)
+{
+	__asm__ volatile("outb %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint16_t inw(uint16_t port)
+{
+	uint16_t ret;
+	__asm__ volatile("inw %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outw(uint16_t port, uint16_t val)
+{
+	__asm__ volatile("outw %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline uint32_t inl(uint16_t port)
+{
+	uint32_t ret;
+	__asm__ volatile("inl %1, %0" : "=a"(ret) : "Nd"(port));
+	return ret;
+}
+
+static inline void outl(uint16_t port, uint32_t val)
+{
+	__asm__ volatile("outl %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline void io_wait(void)
+{
+	outb(0x80, 0);
+}
+
+static inline void sti(void)
+{
+	__asm__ volatile("sti");
+}
+
+static inline void cli(void)
+{
+	__asm__ volatile("cli");
+}
+
+static inline void int_wait(void)
+{
+	__asm__ volatile("sti; hlt");
+}
+
+static inline void halt(void)
+{
+	__asm__ volatile("cli; hlt");
+}
+
+#endif /* bindings.h */
-- 
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