5-malloc.md (#25)

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

diff --git a/lunaix-os/includes/lunaix/mm/vmm.h b/lunaix-os/includes/lunaix/mm/vmm.h
index ec420a2c6ec5797050eb9837d67726fec6bf5d4e..74cba52ab55b8d293d97181dc0236b9cf12e31ec 100644 (file)
--- a/lunaix-os/includes/lunaix/mm/vmm.h
+++ b/lunaix-os/includes/lunaix/mm/vmm.h
@@ -19,6 +19,12 @@
  */
 #define VMAP_NOMAP 2
 
  */
 #define VMAP_NOMAP 2
 

+/**
+ * @brief 映射页墙：将虚拟地址映射为页墙，忽略给定的物理地址和页属性
+ *
+ */
+#define VMAP_GUARDPAGE 4
+

 /**
  * @brief 规定下一个可用页映射应当限定在指定的4MB地址空间内
  *
 /**
  * @brief 规定下一个可用页映射应当限定在指定的4MB地址空间内
  *


@@ -90,10 +96,7 @@ vmm_lookupat(ptr_t mnt, ptr_t va, v_mapping* mapping);
  *
  */
 ptr_t
  *
  */
 ptr_t

-vmm_dup_page(pid_t pid, ptr_t pa);
-
-ptr_t
-vmm_dup_vmspace(pid_t pid);
+vmm_dup_page(ptr_t pa);

 
 /**
  * @brief 挂载另一个虚拟地址空间至当前虚拟地址空间
 
 /**
  * @brief 挂载另一个虚拟地址空间至当前虚拟地址空间


@@ -111,6 +114,19 @@ vmm_mount_pd(ptr_t mnt, ptr_t pde);
 ptr_t
 vmm_unmount_pd(ptr_t mnt);
 
 ptr_t
 vmm_unmount_pd(ptr_t mnt);
 

+static inline ptr_t 
+vmm_mount_pg(ptr_t mnt, ptr_t pa) {
+    assert(pa);
+    vmm_set_mapping(VMS_SELF, mnt, pa, PG_PREM_RW, 0);
+    return mnt;
+}
+
+static inline ptr_t 
+vmm_unmount_pg(ptr_t mnt) {
+    vmm_del_mapping(VMS_SELF, mnt);
+    return mnt;
+}
+

 void*
 vmm_ioremap(ptr_t paddr, size_t size);
 
 void*
 vmm_ioremap(ptr_t paddr, size_t size);