feat: standard vga support (mode switching, framebuffer remapping)

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

diff --git a/lunaix-os/includes/lunaix/types.h b/lunaix-os/includes/lunaix/types.h
index 1d6556b804cb4a10dadc5a5920dfd3a65f412407..a6af3c10b99ffa7577af409457409c03cdeed999 100644 (file)
--- a/lunaix-os/includes/lunaix/types.h
+++ b/lunaix-os/includes/lunaix/types.h
@@ -23,6 +23,22 @@ typedef int pid_t;
 typedef unsigned long size_t;
 typedef unsigned long off_t;
 
+typedef unsigned int cpu_t;
+
 typedef u64_t lba_t;
 
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ *
+ * @ptr:       the pointer to the member.
+ * @type:      the type of the container struct this is embedded in.
+ * @member:    the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member)                                        \
+    ({                                                                         \
+        const typeof(((type*)0)->member)* __mptr = (ptr);                      \
+        (ptr) ? (type*)((char*)__mptr - offsetof(type, member)) : 0;           \
+    })
+
 #endif /* __LUNAIX_TYPES_H */