kernel_args: redo implementation

2026-10-27 12:48:22 +00:00 · 2025-09-07 23:09:34 -03:00
parent a3a51abfed
commit 80786cf97a
15 changed files with 198 additions and 107 deletions
@@ -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