small refactoring & fix

kernel.h

@@ -1,6 +1,24 @@
 #pragma once
 #include "common.h"
 
+#define PROCS_MAX 8             // Maximum ammount of processes
+#define PROC_UNUSED 0           // Unused processes control structure
+#define PROC_RUNNABLE 1         // Runnable proccess
+#define SATP_SV32 (1u << 31)
+#define PAGE_V (1 << 0) // "Valid" bit (entry is allowed)
+#define PAGE_R (1 << 1) // Readable
+#define PAGE_W (1 << 2) // Writable
+#define PAGE_X (1 << 3) // Executable
+#define PAGE_U (1 << 4) // User (accessible in user mode)
+
+struct process {
+    int pid;                    // ID of a process
+    int state;                  // State of the process: either PROC_UNUSED or PROC_RUNNABLE
+    vaddr_t sp;                 // Stack pointer
+    uint32_t *page_table;       // points to first level page table
+    uint8_t stack[8192];        // Kernel stack
+};
+
 struct sbiret {
     long error;
     long value;
@@ -59,24 +77,3 @@ struct trap_frame {
         while (1) {}                                                                                \
     } while (0)
 
-#define PROCS_MAX 8             // Maximum ammount of processes
-
-#define PROC_UNUSED 0           // Unused processes control structure
-#define PROC_RUNNABLE 1         // Runnable proccess
-
-// Page table
-#define SATP_SV32 (1u << 32)
-#define PAGE_V (1 << 0) // "Valid" bit (entry is allowed)
-#define PAGE_R (1 << 1) // Readable
-#define PAGE_W (1 << 2) // Writable
-#define PAGE_X (1 << 3) // Executable
-#define PAGE_U (1 << 4) // User (accessible in user mode)
-
-struct process {
-    int pid;                    // ID of a process
-    int state;                  // State of the process: either PROC_UNUSED or PROC_RUNNABLE
-    vaddr_t sp;                 // Stack pointer
-    uint32_t *page_table;
-    uint8_t stack[8192];        // Kernel stack
-};
-