Minimal device system, implement terminal device and libterminal

libterminal/terminal/.gitignore

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+*.o

libterminal/terminal/device.h

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+#ifndef _LIBTERMINAL_TERMINAL_DEVICE_H
+#define _LIBTERMINAL_TERMINAL_DEVICE_H
+
+#define TERMINAL_DEVICE 1
+
+#include <m/terminal_device.h>
+
+#endif // _LIBTERMINAL_TERMINAL_DEVICE_H

libterminal/terminal/src.mk

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+c += terminal/terminal.c
+
+o += terminal/terminal.o

libterminal/terminal/terminal.c

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+#include <stddef.h>
+#include <terminal/device.h>
+#include <terminal/terminal.h>
+#include <m/system.h>
+
+void terminal_print (const char* string, size_t len) {
+  device_do (TERMINAL_DEVICE, TERMINAL_PUTSTR, (void*)string, &len, NULL, NULL);
+}

libterminal/terminal/terminal.h

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+#ifndef _LIBTERMINAL_TERMINAL_TERMINAL_H
+#define _LIBTERMINAL_TERMINAL_TERMINAL_H
+
+#include <stddef.h>
+
+void terminal_print (const char* string, size_t len);
+
+#endif // _LIBTERMINAL_TERMINAL_TERMINAL_H