Correcting header guards across the kernel

kern/libkern/memory.h

@@ -13,4 +13,4 @@
  */
 size_t probe_memory(void);
 
-#endif
+#endif // MEMORY_KARNEL_H

kern/libkern/panic.h

@@ -5,4 +5,4 @@
 
 void __panic(const char *restrict fmt, ...);
 
-#endif
+#endif // KERNEL_PANIC_H

kern/libkern/riscv.h

@@ -77,4 +77,4 @@ static inline int intr_get() {
     return (x & SSTATUS_SIE) != 0;
 }
 
-#endif
+#endif // RISCV_KERNEL_H

kern/libkern/spinlock.h

@@ -1,5 +1,5 @@
-#ifndef KERNEL_Spinlock_H
-#define KERNEL_Spinlock_H
+#ifndef KERNEL_SPINLOCK_H
+#define KERNEL_SPINLOCK_H
 
 #include <proc.h>
 #include <stdbool.h>
@@ -19,4 +19,4 @@ void spin_unlock(spinlock_t *l);
 bool spin_is_holding(spinlock_t *l);
 void spin_lock(spinlock_t *l);
 
-#endif
+#endif // KERNEL_SPINLOCK_H

kern/libkern/stdarg.h

@@ -8,4 +8,4 @@ typedef __builtin_va_list va_list;
 #define va_end(ap)         __builtin_va_end(ap)
 #define va_copy(dest, src) __builtin_va_copy(dest, src)
 
-#endif
+#endif // _STDARG_H

kern/libkern/stdbool.h

@@ -5,4 +5,4 @@
 typedef char bool;
 enum { false = 0, true = 1 };
 
-#endif
+#endif // _STDBOOL_H

kern/libkern/stdint.h

@@ -1,4 +1,5 @@
-#pragma once
+#ifndef STDINT_H
+#define STDINT_H
 
 typedef unsigned char  u8;
 typedef unsigned short u16;
@@ -27,3 +28,5 @@ typedef uint64_t uintptr_t;
 #define UINT16_MAX (65535)
 #define UINT32_MAX (4294967295U)
 #define UINT64_MAX (__UINT64_C(18446744073709551615))
+
+#endif // STDINT_H

kern/libkern/string.h

@@ -42,4 +42,4 @@ char  *strchr(const char *s, int c);
 char  *strrchr(const char *s, int c);
 */
 
-#endif
+#endif // KERNEL_STRING_H

kern/libkern/uart.h

@@ -4,4 +4,4 @@
 /** Send a single character to the UART device */
 void uart_putc(char c);
 
-#endif
+#endif // UART_KERNEL_H