Added libgui

22 files changed, 0 insertions, 896 deletions

diff --git a/lib/Makefile b/lib/Makefile
deleted file mode 100644
index f4286ae..0000000
--- a/lib/Makefile
+++ /dev/null
@@ -1,36 +0,0 @@
-# MIT License, Copyright (c) 2020 Marvin Borner
-
-# TODO: Remove serial and cpu from libc?
-COBJS = str.o \
-	mem.o \
-	math.o \
-	conv.o \
-	print.o \
-	serial.o \
-	cpu.o \
-	sys.o \
-	list.o
-CC = ../cross/opt/bin/i686-elf-gcc
-LD = ../cross/opt/bin/i686-elf-ld
-OC = ../cross/opt/bin/i686-elf-ar
-
-# Flags to make the binary smaller TODO: Remove after indirect pointer support!
-CSFLAGS = -mpreferred-stack-boundary=2 -fno-asynchronous-unwind-tables -Os
-
-CFLAGS = $(CSFLAGS) -Wall -Wextra -nostdlib -nostdinc -ffreestanding -fno-builtin -mgeneral-regs-only -std=c99 -m32 -pedantic-errors -Iinc/
-
-%.o: %.c
-	@$(CC) -c $(CFLAGS) $< -o $@
-
-libc: CFLAGS += -Duserspace -fPIE
-libc: $(COBJS)
-	@mkdir -p ../build/
-	@$(AR) qc ../build/libc.a $+
-
-libk: CFLAGS += -Dkernel
-libk: $(COBJS)
-	@mkdir -p ../build/
-	@$(AR) qc ../build/libk.a $+
-
-clean:
-	@find . -name "*.o" -type f -delete
diff --git a/lib/conv.c b/lib/conv.c
deleted file mode 100644
index 3bde4ec..0000000
--- a/lib/conv.c
+++ /dev/null
@@ -1,144 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <def.h>
-#include <math.h>
-#include <mem.h>
-#include <str.h>
-
-static const char HTOA_TABLE[] = "0123456789ABCDEF";
-static const char ITOA_TABLE[] = "0123456789";
-
-int atoi(char *str)
-{
-	u32 s_str = strlen(str);
-	if (!s_str)
-		return 0;
-
-	u8 negative = 0;
-	if (str[0] == '-')
-		negative = 1;
-
-	u32 i = 0;
-	if (negative)
-		i++;
-
-	int ret = 0;
-	for (; i < s_str; i++) {
-		ret += (str[i] - '0') * pow(10, (int)((s_str - i) - 1));
-	}
-
-	if (negative)
-		ret *= -1;
-	return ret;
-}
-
-char *htoa(u32 n)
-{
-	char *ret = (char *)malloc(10);
-
-	int i = 0;
-	while (n) {
-		ret[i++] = HTOA_TABLE[n & 0xF];
-		n >>= 4;
-	}
-
-	if (!i) {
-		ret[0] = '0';
-		i++;
-	}
-
-	for (; i <= 9; i++)
-		ret[i] = 0;
-
-	char *aux = strdup(ret);
-	free(ret);
-	ret = aux;
-
-	strinv(ret);
-	return ret;
-}
-
-int htoi(char *str)
-{
-	u32 s_str = strlen(str);
-
-	u32 i = 0;
-	int ret = 0;
-	for (; i < s_str; i++) {
-		char c = str[i];
-		int aux = 0;
-		if (c >= '0' && c <= '9')
-			aux = c - '0';
-		else if (c >= 'A' && c <= 'F')
-			aux = (c - 'A') + 10;
-
-		ret += aux * pow(16, (int)((s_str - i) - 1));
-	}
-
-	return ret;
-}
-
-char *itoa(int n)
-{
-	if (!n) {
-		char *ret = (char *)malloc(2);
-		ret[0] = '0';
-		ret[1] = 0;
-		return ret;
-	}
-	u8 negative = (u8)(n < 0);
-	if (negative)
-		n *= -1;
-
-	int sz;
-	for (sz = 0; n % pow(10, sz) != n; sz++) {
-	}
-
-	char *ret = (char *)malloc((u32)(sz + 1));
-
-	for (int i = 0; i < sz; i++) {
-		int digit = (n % pow(10, i + 1)) / pow(10, i);
-		ret[i] = ITOA_TABLE[digit];
-	}
-	ret[sz] = 0;
-
-	if (negative) {
-		char *aux = (char *)malloc((u32)(sz + 2));
-		strcpy(aux, ret);
-		aux[sz] = '-';
-		aux[sz + 1] = 0;
-		free(ret);
-		ret = aux;
-	}
-
-	strinv(ret);
-	return ret;
-}
-
-char *conv_base(int value, char *result, int base, int is_signed)
-{
-	if (base < 2 || base > 36) {
-		*result = '\0';
-		return result;
-	}
-
-	char *ptr = result, *ptr1 = result, tmp_char;
-	int tmp_value;
-
-	do {
-		tmp_value = value;
-		value /= base;
-		*ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz"
-			[35 + (tmp_value - value * base)];
-	} while (value);
-
-	if (is_signed && tmp_value < 0)
-		*ptr++ = '-';
-	*ptr-- = '\0';
-	while (ptr1 < ptr) {
-		tmp_char = *ptr;
-		*ptr-- = *ptr1;
-		*ptr1++ = tmp_char;
-	}
-	return result;
-}
diff --git a/lib/cpu.c b/lib/cpu.c
deleted file mode 100644
index 5ed9de9..0000000
--- a/lib/cpu.c
+++ /dev/null
@@ -1,75 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// This file is a wrapper around some CPU asm calls
-
-#include <def.h>
-
-u8 inb(u16 port)
-{
-	u8 value;
-	__asm__ volatile("inb %1, %0" : "=a"(value) : "Nd"(port));
-	return value;
-}
-
-u16 inw(u16 port)
-{
-	u16 value;
-	__asm__ volatile("inw %1, %0" : "=a"(value) : "Nd"(port));
-	return value;
-}
-
-u32 inl(u16 port)
-{
-	u32 value;
-	__asm__ volatile("inl %1, %0" : "=a"(value) : "Nd"(port));
-	return value;
-}
-
-void insl(u16 port, void *addr, int n)
-{
-	__asm__ volatile("cld; rep insl"
-			 : "=D"(addr), "=c"(n)
-			 : "d"(port), "0"(addr), "1"(n)
-			 : "memory", "cc");
-}
-
-void outb(u16 port, u8 data)
-{
-	__asm__ volatile("outb %0, %1" ::"a"(data), "Nd"(port));
-}
-
-void outw(u16 port, u16 data)
-{
-	__asm__ volatile("outw %0, %1" ::"a"(data), "Nd"(port));
-}
-
-void outl(u16 port, u32 data)
-{
-	__asm__ volatile("outl %0, %1" ::"a"(data), "Nd"(port));
-}
-
-void cli()
-{
-	__asm__ volatile("cli");
-}
-
-void sti()
-{
-	__asm__ volatile("sti");
-}
-
-void hlt()
-{
-	__asm__ volatile("hlt");
-}
-
-void idle()
-{
-	while (1)
-		hlt();
-}
-
-void loop()
-{
-	cli();
-	idle();
-}
diff --git a/lib/inc/arg.h b/lib/inc/arg.h
deleted file mode 100644
index 73e592d..0000000
--- a/lib/inc/arg.h
+++ /dev/null
@@ -1,11 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef ARG_H
-#define ARG_H
-
-typedef __builtin_va_list va_list;
-#define va_start __builtin_va_start
-#define va_end __builtin_va_end
-#define va_arg __builtin_va_arg
-
-#endif
diff --git a/lib/inc/assert.h b/lib/inc/assert.h
deleted file mode 100644
index 2cb095b..0000000
--- a/lib/inc/assert.h
+++ /dev/null
@@ -1,11 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef ASSERT_H
-#define ASSERT_H
-
-#include <print.h>
-
-#define assert(exp)                                                                                \
-	(exp) ? 0 : printf("%s:%d: %s: Assertion '%s' failed\n", __FILE__, __LINE__, __func__, #exp)
-
-#endif
diff --git a/lib/inc/conv.h b/lib/inc/conv.h
deleted file mode 100644
index d878deb..0000000
--- a/lib/inc/conv.h
+++ /dev/null
@@ -1,15 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef CONV_H
-#define CONV_H
-
-#include <def.h>
-
-int atoi(char *str);
-char *htoa(u32 n);
-int htoi(char *str);
-char *itoa(int n);
-
-char *conv_base(int value, char *result, int base, int is_signed);
-
-#endif
diff --git a/lib/inc/cpu.h b/lib/inc/cpu.h
deleted file mode 100644
index 2d367cb..0000000
--- a/lib/inc/cpu.h
+++ /dev/null
@@ -1,30 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef CPU_H
-#define CPU_H
-
-#include <def.h>
-
-u8 inb(u16 port);
-u16 inw(u16 port);
-u32 inl(u16 port);
-void insl(u16 port, void *addr, int n);
-
-void outb(u16 port, u8 data);
-void outw(u16 port, u16 data);
-void outl(u16 port, u32 data);
-void cli();
-void sti();
-void hlt();
-void idle();
-void loop();
-
-static inline void spinlock(int *ptr)
-{
-	int prev;
-	do
-		__asm__ volatile("lock xchgl %0,%1" : "=a"(prev) : "m"(*ptr), "a"(1));
-	while (prev);
-}
-
-#endif
diff --git a/lib/inc/def.h b/lib/inc/def.h
deleted file mode 100644
index 42939a0..0000000
--- a/lib/inc/def.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef DEF_H
-#define DEF_H
-
-/**
- * Types
- */
-
-typedef signed char s8;
-typedef unsigned char u8;
-
-typedef signed short s16;
-typedef unsigned short u16;
-
-typedef signed long s32;
-typedef unsigned long u32;
-
-typedef signed long long s64;
-typedef unsigned long long u64;
-
-/**
- * Macros
- */
-
-#define NULL ((void *)0)
-
-#endif
diff --git a/lib/inc/list.h b/lib/inc/list.h
deleted file mode 100644
index 5deaf59..0000000
--- a/lib/inc/list.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef LIST_H
-#define LIST_H
-
-#include <def.h>
-
-struct list {
-	struct node *head;
-};
-
-struct node {
-	void *data;
-	int nonce;
-	struct node *next;
-	struct node *prev;
-};
-
-struct list *list_new();
-/* struct node *list_new_node(); */ // TODO: Make node-specific things static/private?
-/* void list_add_node(struct list *list, struct node *node); */
-void list_add(struct list *list, void *data);
-void list_remove(struct list *list, struct node *node);
-
-#endif
diff --git a/lib/inc/math.h b/lib/inc/math.h
deleted file mode 100644
index 268e3e7..0000000
--- a/lib/inc/math.h
+++ /dev/null
@@ -1,10 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef MATH_H
-#define MATH_H
-
-#include <def.h>
-
-int pow(int base, int exp);
-
-#endif
diff --git a/lib/inc/mem.h b/lib/inc/mem.h
deleted file mode 100644
index 0030b3d..0000000
--- a/lib/inc/mem.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef MEM_H
-#define MEM_H
-
-#include <def.h>
-
-// Huh
-#ifdef kernel
-#define malloc(n) (void *)((HEAP += n) - n) // TODO: Implement real/better malloc/free
-#define free(ptr)
-#elif defined(userspace)
-#include <sys.h>
-#define malloc(n) (void *)sys1(SYS_MALLOC, n)
-#define free(ptr) (void)(sys1(SYS_FREE, (int)ptr))
-#else
-#error "No lib target specified. Please use -Dkernel or -Duserspace"
-#endif
-
-u32 HEAP;
-u32 HEAP_START;
-
-void *memcpy(void *dst, const void *src, u32 n);
-void *memset(void *dst, int c, u32 n);
-int memcmp(const void *s1, const void *s2, u32 n);
-
-#endif
diff --git a/lib/inc/print.h b/lib/inc/print.h
deleted file mode 100644
index 04668b2..0000000
--- a/lib/inc/print.h
+++ /dev/null
@@ -1,14 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// I may (re)move this in the future // TODO
-
-#ifndef PRINT_H
-#define PRINT_H
-
-#include "arg.h"
-
-int printf(const char *format, ...);
-int vprintf(const char *format, va_list ap);
-int vsprintf(char *str, const char *format, va_list ap);
-int print(const char *str);
-
-#endif
diff --git a/lib/inc/serial.h b/lib/inc/serial.h
deleted file mode 100644
index 6511952..0000000
--- a/lib/inc/serial.h
+++ /dev/null
@@ -1,9 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef SERIAL_H
-#define SERIAL_H
-
-void serial_install();
-void serial_print(const char *data);
-
-#endif
diff --git a/lib/inc/str.h b/lib/inc/str.h
deleted file mode 100644
index 65774e7..0000000
--- a/lib/inc/str.h
+++ /dev/null
@@ -1,17 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#ifndef STR_H
-#define STR_H
-
-#include <def.h>
-
-u32 strlen(const char *s);
-char *strcpy(char *dst, const char *src);
-char *strchr(const char *s, int c);
-char *strcat(char *dst, const char *src);
-int strcmp(const char *s1, const char *s2);
-int strncmp(const char *s1, const char *s2, u32 n);
-char *strinv(char *s);
-char *strdup(const char *s);
-
-#endif
diff --git a/lib/inc/sys.h b/lib/inc/sys.h
deleted file mode 100644
index 16d3c4f..0000000
--- a/lib/inc/sys.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// Syscall implementation
-
-#ifndef SYS_H
-#define SYS_H
-
-enum sys { SYS_LOOP, SYS_MALLOC, SYS_FREE, SYS_EXEC, SYS_EXIT };
-
-int sys0(enum sys num);
-int sys1(enum sys num, int d1);
-int sys2(enum sys num, int d1, int d2);
-int sys3(enum sys num, int d1, int d2, int d3);
-int sys4(enum sys num, int d1, int d2, int d3, int d4);
-int sys5(enum sys num, int d1, int d2, int d3, int d4, int d5);
-
-/**
- * Wrappers
- */
-
-#define loop() sys0(SYS_LOOP)
-#define exec(path) sys1(SYS_EXEC, (int)path)
-#define exit()                                                                                     \
-	sys0(SYS_EXIT);                                                                            \
-	while (1) {                                                                                \
-	}
-
-#endif
diff --git a/lib/list.c b/lib/list.c
deleted file mode 100644
index c36d6e1..0000000
--- a/lib/list.c
+++ /dev/null
@@ -1,74 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <def.h>
-#include <list.h>
-#include <mem.h>
-
-static int nonce = 0;
-
-struct list *list_new()
-{
-	struct list *list = malloc(sizeof(*list));
-	list->head = NULL;
-	return list;
-}
-
-struct node *list_new_node()
-{
-	struct node *node = malloc(sizeof(*node));
-	node->data = NULL;
-	node->prev = NULL;
-	node->next = NULL;
-	node->nonce = nonce++;
-	return node;
-}
-
-void list_add_node(struct list *list, struct node *node)
-{
-	if (list == NULL)
-		return;
-
-	if (list->head == NULL) {
-		list->head = node;
-		return;
-	}
-
-	struct node *iterator = list->head;
-	while (iterator != NULL) {
-		if (iterator->next == NULL) {
-			iterator->next = node;
-			node->prev = iterator;
-			break;
-		}
-		iterator = iterator->next;
-	}
-}
-
-void list_add(struct list *list, void *data)
-{
-	struct node *node = list_new_node();
-	node->data = data;
-	list_add_node(list, node);
-}
-
-// Maybe list_remove_node?
-void list_remove(struct list *list, struct node *node)
-{
-	if (list == NULL || list->head == NULL)
-		return;
-
-	if (list->head == node) {
-		list->head = list->head->next;
-		return;
-	}
-
-	struct node *iterator = list->head->next;
-	while (iterator != node) {
-		iterator = iterator->next;
-		if (iterator == NULL)
-			return;
-	}
-
-	iterator->prev->next = iterator->next;
-	iterator->next->prev = iterator->prev;
-}
diff --git a/lib/math.c b/lib/math.c
deleted file mode 100644
index 9cd9cea..0000000
--- a/lib/math.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-int pow(int base, int exp)
-{
-	if (exp < 0)
-		return 0;
-
-	if (!exp)
-		return 1;
-
-	int ret = base;
-	for (int i = 1; i < exp; i++)
-		ret *= base;
-	return ret;
-}
diff --git a/lib/mem.c b/lib/mem.c
deleted file mode 100644
index 58c337b..0000000
--- a/lib/mem.c
+++ /dev/null
@@ -1,35 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <def.h>
-#include <print.h>
-#include <sys.h>
-
-void *memcpy(void *dst, const void *src, u32 n)
-{
-	const char *sp = (const char *)src;
-	char *dp = (char *)dst;
-	for (; n != 0; n--)
-		*dp++ = *sp++;
-	return dst;
-}
-
-void *memset(void *dst, char val, u32 n)
-{
-	char *temp = (char *)dst;
-	for (; n != 0; n--)
-		*temp++ = val;
-	return dst;
-}
-
-int memcmp(const void *s1, const void *s2, u32 n)
-{
-	const u8 *a = (const u8 *)s1;
-	const u8 *b = (const u8 *)s2;
-	for (u32 i = 0; i < n; i++) {
-		if (a[i] < b[i])
-			return -1;
-		else if (b[i] < a[i])
-			return 1;
-	}
-	return 0;
-}
diff --git a/lib/print.c b/lib/print.c
deleted file mode 100644
index 84c4975..0000000
--- a/lib/print.c
+++ /dev/null
@@ -1,104 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <arg.h>
-#include <conv.h>
-#include <def.h>
-#include <mem.h>
-#include <serial.h>
-#include <str.h>
-
-static void append(char *dest, char *src, int index)
-{
-	for (u32 i = index; i < strlen(src) + index; i++)
-		dest[i] = src[i - index];
-	dest[index + strlen(src)] = 0;
-}
-
-int vsprintf(char *str, const char *format, va_list ap)
-{
-	u8 ready_to_format = 0;
-
-	int i = 0;
-	char buf = 0;
-	char format_buffer[20] = "\0";
-
-	for (; *format; format++) {
-		if (ready_to_format) {
-			ready_to_format = 0;
-
-			if (*format == '%') {
-				str[i] = '%';
-				continue;
-			}
-
-			buf = *format;
-
-			// TODO: Improve this repetitive code
-			if (buf == 's') {
-				char *string = va_arg(ap, char *);
-				append(str, string, i);
-				i = strlen(str);
-			} else if (buf == 'x') {
-				conv_base(va_arg(ap, u32), format_buffer, 16, 0);
-				append(str, format_buffer, i);
-				i = strlen(str);
-			} else if (buf == 'd' || buf == 'i') {
-				conv_base(va_arg(ap, s32), format_buffer, 10, 1);
-				append(str, format_buffer, i);
-				i = strlen(str);
-			} else if (buf == 'u') {
-				conv_base(va_arg(ap, u32), format_buffer, 10, 0);
-				append(str, format_buffer, i);
-				i = strlen(str);
-			} else if (buf == 'o') {
-				conv_base(va_arg(ap, u32), format_buffer, 8, 0);
-				append(str, format_buffer, i);
-				i = strlen(str);
-			} else if (buf == 'b') {
-				conv_base(va_arg(ap, u32), format_buffer, 2, 0);
-				append(str, format_buffer, i);
-				i = strlen(str);
-			} else if (buf == 'c') {
-				str[i] = (char)va_arg(ap, int);
-				i++;
-			}
-		} else {
-			if (*format == '%')
-				ready_to_format = 1;
-			else {
-				str[i] = *format;
-				i++;
-			}
-		}
-
-		format_buffer[0] = '\0';
-	}
-
-	return strlen(str);
-}
-
-int vprintf(const char *format, va_list ap)
-{
-	char buf[1024];
-	memset(buf, 0, 1024);
-	int len = vsprintf(buf, format, ap);
-	serial_print(buf); // TODO: Remove temporary serial print
-	return len;
-}
-
-// TODO: Fix printf for *very* large strings (serial works)
-int printf(const char *format, ...)
-{
-	va_list ap;
-	va_start(ap, format);
-	int len = vprintf(format, ap);
-	va_end(ap);
-
-	return len;
-}
-
-int print(const char *str)
-{
-	serial_print(str);
-	return strlen(str);
-}
diff --git a/lib/serial.c b/lib/serial.c
deleted file mode 100644
index 28de140..0000000
--- a/lib/serial.c
+++ /dev/null
@@ -1,34 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <cpu.h>
-#include <def.h>
-#include <str.h>
-
-void serial_install()
-{
-	outb(0x3f8 + 1, 0x00);
-	outb(0x3f8 + 3, 0x80);
-	outb(0x3f8 + 0, 0x03);
-	outb(0x3f8 + 1, 0x00);
-	outb(0x3f8 + 3, 0x03);
-	outb(0x3f8 + 2, 0xC7);
-	outb(0x3f8 + 4, 0x0B);
-}
-
-int is_transmit_empty()
-{
-	return inb(0x3f8 + 5) & 0x20;
-}
-
-void serial_put(char ch)
-{
-	while (is_transmit_empty() == 0)
-		;
-	outb(0x3f8, (u8)ch);
-}
-
-void serial_print(const char *data)
-{
-	for (u32 i = 0; i < strlen(data); i++)
-		serial_put(data[i]);
-}
diff --git a/lib/str.c b/lib/str.c
deleted file mode 100644
index d1ee325..0000000
--- a/lib/str.c
+++ /dev/null
@@ -1,98 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-
-#include <def.h>
-#include <mem.h>
-
-u32 strlen(const char *s)
-{
-	const char *ss = s;
-	while (*ss)
-		ss++;
-	return ss - s;
-}
-
-char *strcpy(char *dst, const char *src)
-{
-	char *q = dst;
-	const char *p = src;
-	char ch;
-
-	do {
-		*q++ = ch = *p++;
-	} while (ch);
-
-	return dst;
-}
-
-int strcmp(const char *s1, const char *s2)
-{
-	const u8 *c1 = (const u8 *)s1;
-	const u8 *c2 = (const u8 *)s2;
-	u8 ch;
-	int d = 0;
-
-	while (1) {
-		d = (int)(ch = *c1++) - (int)*c2++;
-		if (d || !ch)
-			break;
-	}
-
-	return d;
-}
-
-int strncmp(const char *s1, const char *s2, u32 n)
-{
-	const u8 *c1 = (const u8 *)s1;
-	const u8 *c2 = (const u8 *)s2;
-	u8 ch;
-	int d = 0;
-
-	while (n--) {
-		d = (int)(ch = *c1++) - (int)*c2++;
-		if (d || !ch)
-			break;
-	}
-
-	return d;
-}
-
-char *strchr(const char *s, int c)
-{
-	while (*s != (char)c) {
-		if (!*s)
-			return NULL;
-		s++;
-	}
-
-	return (char *)s;
-}
-
-char *strcat(char *dst, const char *src)
-{
-	strcpy(strchr(dst, '\0'), src);
-	return dst;
-}
-
-char *strinv(char *s)
-{
-	u32 s_str = strlen(s);
-
-	int iterations = (int)s_str / 2;
-	for (int i = 0; i < iterations; i++) {
-		char aux = s[i];
-		s[i] = s[(s_str - i) - 1];
-		s[(s_str - i) - 1] = aux;
-	}
-	return s;
-}
-
-char *strdup(const char *s)
-{
-	int l = strlen(s) + 1;
-	char *d = malloc(l);
-
-	if (d)
-		memcpy(d, s, l);
-
-	return d;
-}
diff --git a/lib/sys.c b/lib/sys.c
deleted file mode 100644
index d676445..0000000
--- a/lib/sys.c
+++ /dev/null
@@ -1,57 +0,0 @@
-// MIT License, Copyright (c) 2020 Marvin Borner
-// Syscall implementation
-
-#include <sys.h>
-
-/**
- * Definitions
- */
-
-int sys0(enum sys num)
-{
-	int a;
-	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num));
-	return a;
-}
-
-int sys1(enum sys num, int d1)
-{
-	int a;
-	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1));
-	return a;
-}
-
-int sys2(enum sys num, int d1, int d2)
-{
-	int a;
-	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1), "c"((int)d2));
-	return a;
-}
-
-int sys3(enum sys num, int d1, int d2, int d3)
-{
-	int a;
-	__asm__ volatile("int $0x80"
-			 : "=a"(a)
-			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3));
-	return a;
-}
-
-int sys4(enum sys num, int d1, int d2, int d3, int d4)
-{
-	int a;
-	__asm__ volatile("int $0x80"
-			 : "=a"(a)
-			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3), "S"((int)d4));
-	return a;
-}
-
-int sys5(enum sys num, int d1, int d2, int d3, int d4, int d5)
-{
-	int a;
-	__asm__ volatile("int $0x80"
-			 : "=a"(a)
-			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3), "S"((int)d4),
-			   "D"((int)d5));
-	return a;
-}