Fixed a typing bug.

More explicit type conversion from virual to physical bytes.
Bracket negative #defines for extra paranoia.
Added a forgotten 'void' to a function.

kernel/arch/i386/apic.c

@@ -98,7 +98,7 @@
 
 /*
  * to make APIC work if SMP is not configured, we need to set the maximal number
- * fo CPUS to 1, cpuid to return 0 and the current cpu is always BSP
+ * of CPUS to 1, cpuid to return 0 and the current cpu is always BSP
  */
 #define CONFIG_MAX_CPUS 1
 #define cpu_is_bsp(x) 1
@@ -483,7 +483,7 @@ PRIVATE struct gate_table_s gate_table_common[] = {
 };
 
 #ifdef CONFIG_APIC_DEBUG
-PRIVATE lapic_set_dummy_handlers(void)
+PRIVATE void lapic_set_dummy_handlers(void)
 {
 	char * handler;
 	int vect = 32;

kernel/arch/i386/include/archconst.h

@@ -144,8 +144,8 @@
 #define IF_MASK 0x00000200
 #define IOPL_MASK 0x003000
 
-#define vir2phys(vir)   (kinfo.data_base + (vir_bytes) (vir))
-#define phys2vir(ph)   ((vir_bytes) (ph) - kinfo.data_base)
+#define vir2phys(vir)   ((phys_bytes)((kinfo.data_base + (vir_bytes) (vir))))
+#define phys2vir(ph)   (((vir_bytes)(((vir_bytes) (ph) - kinfo.data_base)))
 
 #define INTEL_CPUID_GEN_EBX	0x756e6547 /* ASCII value of "Genu" */
 #define INTEL_CPUID_GEN_EDX	0x49656e69 /* ASCII value of "ineI" */

kernel/arch/i386/memory.c

@@ -30,7 +30,7 @@ PRIVATE int psok = 0;
 
 u8_t *vm_pagedirs = NULL;
 
-#define NOPDE -1
+#define NOPDE (-1)
 #define PDEMASK(n) (1L << (n))
 PUBLIC u32_t dirtypde;
 #define WANT_FREEPDES (sizeof(dirtypde)*8-5)