kernel_args: redo implementation

kernel-src/include/kernel/cmdline.h

@@ -1,7 +0,0 @@
-#ifndef _CMDLINE_H
-#define _CMDLINE_H
-
-char *cmdline_get(char *);
-void cmdline_parse();
-
-#endif

kernel-src/include/kernel/kernel_args.h

@@ -0,0 +1,57 @@
+#ifndef _KERNEL_ARGS_H
+#define _KERNEL_ARGS_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+void kernel_arguments_parse(void);
+
+#define KERNEL_ARGUMENT_TYPE_BOOL 0
+#define KERNEL_ARGUMENT_TYPE_STR 1
+#define KERNEL_ARGUMENT_TYPE_INT 2
+
+typedef struct {
+	const char *key;
+	int type;
+	bool found;
+	union {
+		char *value_str;
+		uint64_t value_int;
+	};
+} kernel_argument_t;
+
+#define DEFINE_KERNEL_ARGUMENT(name, t) \
+	static kernel_argument_t kernel_argument_##name = { \
+		.key = #name , \
+		.type = _Generic((t)0, \
+			uint8_t: KERNEL_ARGUMENT_TYPE_INT, \
+			uint16_t: KERNEL_ARGUMENT_TYPE_INT, \
+			uint32_t: KERNEL_ARGUMENT_TYPE_INT, \
+			uint64_t: KERNEL_ARGUMENT_TYPE_INT, \
+			int8_t: KERNEL_ARGUMENT_TYPE_INT, \
+			int16_t: KERNEL_ARGUMENT_TYPE_INT, \
+			int32_t: KERNEL_ARGUMENT_TYPE_INT, \
+			int64_t: KERNEL_ARGUMENT_TYPE_INT, \
+			bool: KERNEL_ARGUMENT_TYPE_BOOL, \
+			char *: KERNEL_ARGUMENT_TYPE_STR, \
+			default: (kernel_argument_t *)NULL \
+		), \
+		.found = false \
+	}; \
+	__attribute__((section(".kernel_arguments"), used)) static kernel_argument_t *kernel_argument_ptr_##name = &kernel_argument_##name;
+
+#define GET_KERNEL_ARGUMENT(name, t) _Generic((t)0, \
+			uint8_t: kernel_argument_##name.value_int, \
+			uint16_t: kernel_argument_##name.value_int, \
+			uint32_t: kernel_argument_##name.value_int, \
+			uint64_t: kernel_argument_##name.value_int, \
+			int8_t: kernel_argument_##name.value_int, \
+			int16_t: kernel_argument_##name.value_int, \
+			int32_t: kernel_argument_##name.value_int, \
+			int64_t: kernel_argument_##name.value_int, \
+			bool: kernel_argument_##name.found, \
+			char *: kernel_argument_##name.value_str, \
+			default: (kernel_argument_t *)NULL \
+		)
+
+#endif

kernel-src/include/string.h

@@ -13,5 +13,6 @@ int strncmp(const char *a, const char *b, size_t c);
 int memcmp(const void *a, const void *b, size_t s);
 void *memmove(void *_d, const void *_s, size_t c);
 char *strerror(int errno);
+long long atoll(const char *c);
 
 #endif