Kernel address space isolation and make the kernel heap global to all processes.

[lunaix-os.git] / lunaix-os / includes / lunaix / mm / page.h

diff --git a/lunaix-os/includes/lunaix/mm/page.h b/lunaix-os/includes/lunaix/mm/page.h
index 935909cbbeb17f401dc49a38b1c3c57865dae5fe..4b6a1a15e3b1540261c984a1b0e4fd1395cdb9cb 100644 (file)
--- a/lunaix-os/includes/lunaix/mm/page.h
+++ b/lunaix-os/includes/lunaix/mm/page.h
@@ -1,7 +1,7 @@
 #ifndef __LUNAIX_PAGE_H
 #define __LUNAIX_PAGE_H
 #include <stdint.h>
-#include <lunaix/constants.h>
+#include <lunaix/common.h>
 
 #define PG_SIZE_BITS                12
 #define PG_SIZE                     (1 << PG_SIZE_BITS)
@@ -46,6 +46,9 @@
 #define PG_ENTRY_FLAGS(entry)   (entry & 0xFFFU)
 #define PG_ENTRY_ADDR(entry)   (entry & ~0xFFFU)
 
+#define HAS_FLAGS(entry, flags)             ((PG_ENTRY_FLAGS(entry) & (flags)) == flags)
+#define CONTAINS_FLAGS(entry, flags)        (PG_ENTRY_FLAGS(entry) & (flags))
+
 #define PG_PREM_R              PG_PRESENT
 #define PG_PREM_RW             PG_PRESENT | PG_WRITE
 #define PG_PREM_UR             PG_PRESENT | PG_ALLOW_USER
@@ -67,6 +70,7 @@
 typedef unsigned long ptd_t;
 typedef unsigned long pt_t;
 typedef unsigned int pt_attr;
+typedef uint32_t x86_pte_t;
 
 /**
  * @brief 虚拟映射属性
@@ -79,14 +83,25 @@ typedef struct {
     uintptr_t pa;
     // 映射的flags
     uint16_t flags;
+    // PTE地址
+    x86_pte_t *pte;
 } v_mapping;
 
-typedef uint32_t x86_pte_t;
 typedef struct
 {
     x86_pte_t entry[PG_MAX_ENTRIES];
 } __attribute__((packed)) x86_page_table;
 
 
+extern void __pg_mount_point;
+
+/* 三个页挂载点，一个页目录挂载点： 用于临时创建&编辑页表 */
+
+#define PD_MOUNT    0xAFC00000
+#define PG_MOUNT_1  (&__pg_mount_point)
+#define PG_MOUNT_2  (&__pg_mount_point + 0x1000)
+#define PG_MOUNT_3  (&__pg_mount_point + 0x2000)
+#define PG_MOUNT_4  (&__pg_mount_point + 0x3000)
+
 
 #endif /* __LUNAIX_PAGE_H */