...

.clangd

@@ -5,6 +5,11 @@ CompileFlags:
     - "-ffreestanding"
     - "-fno-builtin"
     - "-fno-common"
+    - "-Wall"
+    - "-Wextra"
+    - "-Wshadow"
     - "-fno-strict-aliasing"
+    - "-nostdinc"
     - "-nostdlib"
-    - "-Istdlib"
+    - "-I"
+    - "/home/oliste/repos/nub-os/src/stdlib"

makefile

@@ -2,8 +2,7 @@ CC = x86_64-elf-gcc
 LD = x86_64-elf-ld
 AS = nasm
 
-TARGET_PATH = src/arch/x86_64
+CFLAGS 	= -m64 -ffreestanding -nostdinc -nostdlib -fno-builtin -Wall -Wextra -Wshadow -std=c11 -I src/stdlib -g
-CFLAGS 	= -m64 -ffreestanding -nostdlib -fno-builtin -Wall -Wextra -Wshadow -std=c11 -I src/stdlib -g
 LDFLAGS	= -g
 ASFLAGS	= -f elf64 -g -F dwarf
 

src/arch/mmap.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stdint.h>
+#include "stdint.h"
 
 typedef struct
 {

src/arch/x86_64/interrupts.c

@@ -1,7 +1,7 @@
 #include "interrupts.h"
 #include "../arch.h"
+#include "stdio.h"
 #include "util.h"
-#include <stdio.h>
 
 #define PIC1_COMMAND 0x20
 #define PIC1_DATA 0x21

src/arch/x86_64/interrupts.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#include <stdbool.h>
+#include "stdbool.h"
-#include <stdint.h>
+#include "stdint.h"
 
 typedef struct
 {

src/arch/x86_64/keyboard.c

@@ -1,7 +1,7 @@
 // #include "keyboard.h"
 // #include "interrupts.h"
 // #include "util.h"
-// #include <stddef.h>
+// #include "stddef.h"
 
 // #define SCANCODE_LEFT_SHIFT 42
 // #define SCANCODE_RIGHT_SHIFT 54

src/arch/x86_64/keyboard.h

@@ -1,7 +1,7 @@
 // #pragma once
 
-// #include <stdbool.h>
+// #include "stdbool.h"
-// #include <stdint.h>
+// #include "stdint.h"
 
 // typedef struct
 // {

src/arch/x86_64/mmap.c

@@ -1,7 +1,7 @@
 #include "mmap.h"
 #include "../mmap.h"
-#include <stddef.h>
+#include "stddef.h"
-#include <stdio.h>
+#include "stdio.h"
 
 #define USABLE_REGION_SIZE 32
 

src/arch/x86_64/util.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stdint.h>
+#include "stdint.h"
 
 enum
 {

src/arch/x86_64/vga.c

@@ -1,5 +1,5 @@
 #include "vga.h"
-#include <stddef.h>
+#include "stddef.h"
 
 #define ROWS 25
 #define COLUMNS 80

src/arch/x86_64/vga.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stdint.h>
+#include "stdint.h"
 
 #define VGA_BLACK 0
 #define VGA_BLUE 1

src/arch/x86_64/x86_64.c

@@ -3,10 +3,10 @@
 #include "interrupts.h"
 #include "mmap.h"
 #include "multiboot.h"
+#include "stddef.h"
+#include "stdio.h"
 #include "util.h"
 #include "vga.h"
-#include <stddef.h>
-#include <stdio.h>
 
 void entry(multiboot_info_t* mbd)
 {

src/kernel.c

@@ -1,6 +1,6 @@
 #include "kernel.h"
 #include "pmm.h"
-#include <stdio.h>
+#include "stdio.h"
 
 void kmain()
 {

src/pmm.c

@@ -1,9 +1,8 @@
 #include "pmm.h"
 #include "arch/mmap.h"
-#include <mem.h>
+#include "mem.h"
-#include <stdbool.h>
+#include "stddef.h"
-#include <stddef.h>
+#include "stdio.h"
-#include <stdio.h>
 
 #define BITMAP_SIZE 32768 // Supports up to 1GB of RAM
 #define USABLE_REGION_SIZE 32

src/pmm.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stdint.h>
+#include "stdint.h"
 
 #define PAGE_SIZE 4096
 

src/stdlib/mem.c

@@ -1,5 +1,5 @@
 #include "mem.h"
-#include <stdint.h>
+#include "stdint.h"
 
 void memset(void* destination, uint8_t value, size_t length)
 {

src/stdlib/mem.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stddef.h>
+#include "stddef.h"
-#include <stdint.h>
+#include "stdint.h"
 
 void memset(void* destination, uint8_t value, size_t length);

src/stdlib/stdarg.h

@@ -0,0 +1,8 @@
+#pragma once
+
+typedef __builtin_va_list va_list;
+
+#define va_start(ap, last) __builtin_va_start(ap, last)
+#define va_arg(ap, type) __builtin_va_arg(ap, type)
+#define va_end(ap) __builtin_va_end(ap)
+#define va_copy(dest, src) __builtin_va_copy(dest, src)

src/stdlib/stdbool.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#define bool _Bool
+#define true 1
+#define false 0
+
+#define __bool_true_false_are_defined 1

src/stdlib/stddef.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#ifndef NULL
+#define NULL ((void*)0)
+#endif
+
+typedef unsigned long size_t;
+typedef long ptrdiff_t;
+typedef long intptr_t;
+typedef unsigned long uintptr_t;
+
+#define offsetof(type, member) __builtin_offsetof(type, member)

src/stdlib/stdint.h

@@ -0,0 +1,50 @@
+#pragma once
+
+typedef signed char int8_t;
+typedef unsigned char uint8_t;
+typedef signed short int16_t;
+typedef unsigned short uint16_t;
+typedef signed int int32_t;
+typedef unsigned int uint32_t;
+typedef signed long long int64_t;
+typedef unsigned long long uint64_t;
+
+typedef uint8_t u8;
+typedef int8_t i8;
+typedef uint16_t u16;
+typedef int16_t i16;
+typedef uint32_t u32;
+typedef int32_t i32;
+typedef uint64_t u64;
+typedef int64_t i64;
+
+#define INT8_MIN (-128)
+#define INT8_MAX 127
+#define UINT8_MAX 0xff
+
+#define INT16_MIN (-32768)
+#define INT16_MAX 32767
+#define UINT16_MAX 0xffff
+
+#define INT32_MIN (-2147483647 - 1)
+#define INT32_MAX 2147483647
+#define UINT32_MAX 0xffffffffU
+
+#define INT64_MIN (-9223372036854775807LL - 1)
+#define INT64_MAX 9223372036854775807LL
+#define UINT64_MAX 0xffffffffffffffffULL
+
+#define INT8_C(x) x
+#define UINT8_C(x) x##U
+
+#define INT16_C(x) x
+#define UINT16_C(x) x##U
+
+#define INT32_C(x) x
+#define UINT32_C(x) x##U
+
+#define INT64_C(x) x##LL
+#define UINT64_C(x) x##ULL
+
+#define INTMAX_C(x) x##LL
+#define UINTMAX_C(x) x##ULL

src/stdlib/stdio.c

@@ -1,9 +1,9 @@
 #include "stdio.h"
 #include "../arch/arch.h"
+#include "stdarg.h"
+#include "stdbool.h"
+#include "stddef.h"
 #include "string.h"
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stddef.h>
 
 void printf(const char* fmt, ...)
 {