memory nthat

kernel.asm

@@ -30,6 +30,16 @@ _start:
 	push %ebx
 	push %eax
 
+	call kernel_main
+
+	cli
+1:	hlt
+	jmp 1b
+
+
+.global ASM_INIT_FPU
+
+ASM_INIT_FPU:
     # FPU Config
     VAL_037F:
         .hword 0x037F
@@ -39,23 +49,13 @@ _start:
         .hword 0x037A
     # Configure FPU
     cli
-    mov %cr0, %eax
-    or $0b00110010, %eax
-    and $0xFFFFFFFB, %eax
-    mov %eax, %cr0
+    mov %cr0, %ecx
+    or $0b00110010, %ecx
+    and $0xFFFFFFFB, %ecx
+    mov %ecx, %cr0
     fldcw VAL_037F
     fldcw VAL_037E
     fldcw VAL_037A
     fninit
 
-	call kernel_main
-
-	cli
-1:	hlt
-	jmp 1b
-
-_hang:
-    hlt
-    jmp _hang
-
 .size _start, . - _start

kernel.cpp

@@ -1,38 +1,28 @@
 #include <lib/std/stdlib.h>
 #include <kernel/multiboot.h>
+#include <kernel/kernio.h>
 #include <kernel/drivers/terminal/terminal.h>
 
 extern "C"
-
 int kernel_main(uint32_t magic, multibootInfo_t* multiboot) {
-
     cls();
     showCursor();
-    
-	write("OwOS ");
 	setFGColour(VGA_GREEN);
-	write("Starting Up...");
+	write("OwOS V0.2 ");
+	writeln("Starting Up...");
 	setFGColour(VGA_WHITE);
-
 	nline();
 
+
 	write("OwO, What's This? ");
 	write("*notices ");
-	
-	char* ram = "";
-	itoa((int)multiboot->mem_upper, ram);
-
-	write(ram);
+	write(itoa(multiboot->mem_upper / 1024));
     write("mb of ram*");
 	setFGColour(VGA_BRIGHT_MAGENTA);
-	write(" OwO That's a lot of memory");
-	setFGColour(VGA_WHITE);
-	nline();
-	nline();
-	nline();
+	nline(); nline(); nline();
 
 
-    writeln("Okay, this is pretty epic");
+    write("~#");
 
     for (;;)
         asm("hlt");

lib/std/stdlib.cpp

@@ -8,30 +8,53 @@ void swap(int* x, int* y) {
 	y = t;
 }
 
-void reverse(char s[]) {
-	int i;
-	int j = strlen(s) - 1;
-	char c;
+void reverse(char *s) {
+   int length, c;
+   char *begin, *end, temp;
  
-	for (i = 0; i < j; i++) {
-		j--;
-		c = s[i];
-		s[i] = s[j];
-		s[j] = c;
+   length = strlen(s);
+   begin  = s;
+   end    = s;
+ 
+   for (c = 0; c < length - 1; c++)
+      end++;
+ 
+   for (c = 0; c < length/2; c++) {
+      temp   = *end;
+      *end   = *begin;
+      *begin = temp;
+ 
+      begin++;
+      end--;
    }
 }
 
-void itoa(int i, char[] s) {
-	int i, sign;
 
-	if ((sign = n) < 0)  /* record sign */
-		n = -n;          /* make n positive */
-	i = 0;
-	do {       /* generate digits in reverse order */
-		s[i++] = n % 10 + '0';   /* get next digit */
-	} while ((n /= 10) > 0);     /* delete it */
-	if (sign < 0)
-		s[i++] = '-';
+char* itoa(int n, char s[]) {
+    int i = 0; 
+    bool isNegative = false; 
+  
+    if (n == 0) { 
+        s[i++] = '0'; 
         s[i] = '\0'; 
+        return s;
+    } 
+  
+	if (n < 0) { 
+        isNegative = true; 
+        n = -n; 
+    } 
+    
+    while (n != 0) { 
+        s[i++] = n % 10 + '0'; 
+        n /= 10; 
+    } 
+  
+    if (isNegative) 
+        s[i++] = '-'; 
+  
+    s[i] = '\0';
+	
 	reverse(s);
+    return s;
 }

lib/std/stdlib.h

@@ -1,5 +1,5 @@
 #pragma once 
 
 void swap(int* a, int* b);
-void reverse(char s[])
-void itoa(int i, char[] s);
+void reverse(char* s);
+char* itoa(int i, char s[] = "");