adding base shell implementation(but its busted atm)

shell.c

@@ -0,0 +1,37 @@
+#include "shell.h"
+#include "stlio.h"
+#include "mem.h"
+#include "pit.h"
+
+char line[LINE_LENGTH];
+void jmain(void) {
+	memset((u8*)line, 0x00, LINE_LENGTH);
+	while(1) {
+		printf("jos % "); 
+		read(line, LINE_LENGTH);
+		printf("\n");
+		//asm("xchg bx, bx");
+		if(!strcmp("break", line)) {
+			printf("breaking out");
+			memset((u8*)line, 0x00, LINE_LENGTH);
+		}
+		else if(!strcmp("timer", line)) {
+			printf("Time tick: ");
+			printhex(pit_timer_ticks);
+			memset((u8*)line, 0x00, LINE_LENGTH);
+		}
+		else {
+			printf("Attempting a second read: ");
+			read(line, LINE_LENGTH);
+			printf(line);
+		}
+	}
+}
+
+void strip_newline(char* line) {
+	for(u32 i = 0;i <strlen(line); i++) {
+		if(line[i] == '\n') {
+			line[i] = '\0';
+		}
+	}
+}

shell.h

@@ -0,0 +1,5 @@
+#include "types.h"
+
+void strip_newline(char*);
+
+void jmain(void);