refactor: clean up the virtual memory mappings

[lunaix-os.git] / lunaix-os / includes / lunaix / common.h

diff --git a/lunaix-os/includes/lunaix/common.h b/lunaix-os/includes/lunaix/common.h
index 51c37f630e0c54ca353f59725fc33c58c7585514..8873a73ba35b12f90959381cfa0ea5f5be69862e 100644 (file)
--- a/lunaix-os/includes/lunaix/common.h
+++ b/lunaix-os/includes/lunaix/common.h
@@ -1,20 +1,38 @@
 #ifndef __LUNAIX_CONSTANTS_H
 #define __LUNAIX_CONSTANTS_H
 
-#include <stddef.h>
+#define MEM_1MB 0x100000
+#define MEM_4MB 0x400000
+
+#define KSTACK_SIZE MEM_1MB
+#define KSTACK_START ((0x3FFFFFU - KSTACK_SIZE) + 1)
+#define KSTACK_TOP 0x3FFFF0U
+
+#define KERNEL_MM_BASE 0xC0000000
 
-#define K_STACK_SIZE            (64 << 10)
-#define K_STACK_START           ((0xFFBFFFFFU - K_STACK_SIZE) + 1)
-#define HIGHER_HLF_BASE         0xC0000000UL
-#define MEM_1MB                 0x100000UL
+#define KCODE_MAX_SIZE MEM_4MB
+// #define KHEAP_START (KERNEL_MM_BASE + KCODE_MAX_SIZE)
+// #define KHEAP_SIZE_MB 256
 
-#define VGA_BUFFER_VADDR        0xB0000000UL
-#define VGA_BUFFER_PADDR        0xB8000UL
-#define VGA_BUFFER_SIZE         4096
+#define PROC_TABLE_SIZE_MB 4
+#define PROC_START (KERNEL_MM_BASE + KCODE_MAX_SIZE)
 
-#define SYS_TIMER_FREQUENCY_HZ  2048
+#define VGA_FRAMEBUFFER 0xB8000
 
+#define KCODE_SEG 0x08
+#define KDATA_SEG 0x10
+#define UCODE_SEG 0x1B
+#define UDATA_SEG 0x23
+#define TSS_SEG 0x28
 
+#define USER_START 0x400000
+#define USTACK_SIZE 0x100000
+#define USTACK_TOP 0x9ffffff0
+#define USTACK_END (0x9fffffff - USTACK_SIZE + 1)
+#define UMMAP_AREA 0x4D000000
+
+#ifndef __ASM__
+#include <stddef.h>
 // From Linux kernel v2.6.0 <kernel.h:194>
 /**
  * container_of - cast a member of a structure out to the containing structure
@@ -24,8 +42,11 @@
  * @member:    the name of the member within the struct.
  *
  */
-#define container_of(ptr, type, member) ({                     \
-        const typeof( ((type *)0)->member ) *__mptr = (ptr);   \
-        (type *)( (char *)__mptr - offsetof(type,member) );})
+#define container_of(ptr, type, member)                                        \
+    ({                                                                         \
+        const typeof(((type*)0)->member)* __mptr = (ptr);                      \
+        (ptr) ? (type*)((char*)__mptr - offsetof(type, member)) : 0;           \
+    })
 
+#endif
 #endif /* __LUNAIX_CONSTANTS_H */