Add: program: words version 1

src/kernel/kmain.c

@@ -36,7 +36,7 @@ int kmain(int retvalue)
 
   // TODO: Grub modules to load programs
   
-  //timer_install();
+  timer_install();
   keyboard_install();
 
   shell_install();

src/kernel/shell.c

@@ -1,6 +1,7 @@
 #include "system.h"
 #include "../libc/stdio.h"
 #include "../libc/string.h"
+#include "../programs/programs.h"
 
 #define BUFFER_SIZE 256
 
@@ -26,6 +27,10 @@ void shell_install()
     {
 	printf("%d", 4/0);
     }
+    else if (strcmp(input_buffer, "words") == 0)
+    {
+	    program_words();
+    }
     else {
 	printf("Unknown command %s\n", input_buffer);
     }

src/kernel/system.h

@@ -22,5 +22,8 @@ void delay(int ticks);
 void keyboard_install();
 char keyboard_getchar();
 void shell_install();
+
+extern volatile unsigned long global_ticks;
+
 #endif
 

src/kernel/timer.c

@@ -1,16 +1,11 @@
 #include "system.h"
 #include "../libc/stdio.h"
 
-int timer_ticks = 0;
+volatile unsigned long global_ticks = 0;
 
 void timer_handler()
 {
-	timer_ticks++;
-
-	if(timer_ticks % 18 == 0)
-	{
-		puts("One second has passed\n");
-	}
+	global_ticks++;
 }
 
 void timer_install()
@@ -21,6 +16,6 @@ void timer_install()
 void delay(int ticks)
 {
 	unsigned long eticks;
-	eticks = timer_ticks + ticks;
-	while ((unsigned long)timer_ticks < eticks);
+	eticks = global_ticks + ticks;
+	while (global_ticks < eticks);
 }