WIP 2

kernel/dev/dev.h

@@ -0,0 +1,14 @@
+#ifndef DEV_DEV_H_
+#define DEV_DEV_H_
+
+#include <stdint.h>
+
+#define DEV_FNS_MAX 32
+
+typedef int32_t (*DevFn)(uint8_t *buffer, size_t len, void *extra);
+
+typedef struct {
+  DevFn fns[DEV_FNS_MAX];
+} Dev;
+
+#endif // DEV_DEV_H_

kernel/dev/termdev.c

@@ -0,0 +1,19 @@
+#include <stdint.h>
+#include <stddef.h>
+#include "kprintf.h"
+#include "hal/hal.h"
+#include "termdev.h"
+#include "dev.h"
+#include "errors.h"
+
+Dev TERMDEV;
+
+int32_t termdev_putch(uint8_t *buffer, size_t len, void *extra) {
+  kprintf("%.*s", (int)len, (char *)buffer);
+  return E_OK;
+}
+
+void termdev_init(void) {
+  hal_memset(&TERMDEV, 0, sizeof(TERMDEV));
+  TERMDEV.fns[0] = &termdev_putch;
+}

kernel/dev/termdev.h

@@ -0,0 +1,13 @@
+#ifndef DEV_TERMDEV_H_
+#define DEV_TERMDEV_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include "dev.h"
+
+int32_t termdev_putch(uint8_t *buffer, size_t len, void *extra);
+void termdev_init(void);
+
+extern Dev TERMDEV;
+
+#endif // DEV_TERMDEV_H_