Move src/modules/main -> src/kernel

src/kernel/acpi_tables.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "util.h"
+
+struct acpi_table_header
+{
+	uint32_t type;
+	uint32_t length;
+	uint8_t revision;
+	uint8_t checksum;
+	char oem_id[6];
+	char oem_table[8];
+	uint32_t oem_revision;
+	uint32_t creator_id;
+	uint32_t creator_revision;
+
+	bool validate(uint32_t expected_type = 0) const;
+} __attribute__ ((packed));
+
+#define TABLE_HEADER(signature) \
+	static const uint32_t type_id = byteswap(signature); \
+	acpi_table_header header;
+
+
+template <typename T>
+bool acpi_validate(const T *t) { return t->header.validate(T::type_id); }
+
+template <typename T>
+size_t acpi_table_entries(const T *t, size_t size)
+{
+	return (t->header.length - sizeof(T)) / size;
+}
+
+
+struct acpi_xsdt
+{
+	TABLE_HEADER('XSDT');
+	acpi_table_header *headers[0];
+} __attribute__ ((packed));
+
+struct acpi_apic
+{
+	TABLE_HEADER('APIC');
+	uint32_t local_address;
+	uint32_t flags;
+	uint8_t controller_data[0];
+} __attribute__ ((packed));
+