Libc is now written in C++

kernel/Makefile

@@ -49,25 +49,22 @@ $(ARCHDIR)/crtend.o \
 $(ARCHDIR)/crtn.o \
  
 .PHONY: all clean install install-headers install-kernel
-.SUFFIXES: .o .c .cpp .S
+.SUFFIXES: .o .cpp .S
  
 all: banan-os.kernel
  
 banan-os.kernel: $(OBJS) $(ARCHDIR)/linker.ld
-	$(CC) -T $(ARCHDIR)/linker.ld -o $@ $(CFLAGS) $(LINK_LIST)
+	$(CXX) -T $(ARCHDIR)/linker.ld -o $@ $(CFLAGS) $(CPPFLAGS) $(LINK_LIST)
 	grub-file --is-x86-multiboot banan-os.kernel
  
 $(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
-	OBJ=`$(CC) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
- 
-.c.o:
-	$(CC) -MD -c $< -o $@ -std=gnu11 $(CFLAGS) $(CPPFLAGS)
+	OBJ=`$(CXX) $(CFLAGS) $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
  
 .cpp.o:
 	$(CXX) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
  
 .S.o:
-	$(CC) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
+	$(CXX) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
  
 clean:
 	rm -f banan-os.kernel

kernel/arch/i386/tty.cpp

@@ -2,12 +2,11 @@
 
 #include "vga.h"
 
-#include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
-static const size_t VGA_WIDTH = 80;
-static const size_t VGA_HEIGHT = 25;
+static constexpr size_t VGA_WIDTH = 80;
+static constexpr size_t VGA_HEIGHT = 25;
 static uint16_t* const VGA_MEMORY = (uint16_t*)0xC03FF000;
 
 static size_t terminal_row;
@@ -21,7 +20,7 @@ void terminal_putentryat(unsigned char c, uint8_t color, size_t x, size_t y)
 	terminal_buffer[index] = vga_entry(c, color);
 }
 
-void terminal_clear(void)
+void terminal_clear()
 {
 	for (size_t y = 0; y < VGA_HEIGHT; y++)
 		for (size_t x = 0; x < VGA_WIDTH; x++)

kernel/include/kernel/tty.h

@@ -1,16 +1,13 @@
 #pragma once
 
 #include <stddef.h>
+#include <sys/cdefs.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+__BEGIN_DECLS
 
-void terminal_initialize(void);
+void terminal_initialize();
 void terminal_putchar(char c);
 void terminal_write(const char* data, size_t size);
 void terminal_writestring(const char* data);
 
-#ifdef __cplusplus
-}
-#endif
+__END_DECLS

kernel/kernel/kernel.cpp

@@ -7,6 +7,9 @@
 extern "C"
 void kernel_main()
 {
+	asm volatile("cli");
+
+
 	terminal_initialize();
 
 	printf("Hello from the kernel!\n");