initial version

Book-Lite/linux-0.12/include/linux/mm.h

@@ -0,0 +1,45 @@
+#ifndef _MM_H
+#define _MM_H
+
+#define PAGE_SIZE 4096
+
+#include <linux/kernel.h>
+#include <signal.h>
+
+extern int SWAP_DEV;
+
+#define read_swap_page(nr,buffer) ll_rw_page(READ,SWAP_DEV,(nr),(buffer));
+#define write_swap_page(nr,buffer) ll_rw_page(WRITE,SWAP_DEV,(nr),(buffer));
+
+extern unsigned long get_free_page(void);
+extern unsigned long put_dirty_page(unsigned long page,unsigned long address);
+extern void free_page(unsigned long addr);
+void swap_free(int page_nr);
+void swap_in(unsigned long *table_ptr);
+
+extern inline volatile void oom(void)
+{
+	printk("out of memory\n\r");
+	do_exit(SIGSEGV);
+}
+
+#define invalidate() \
+__asm__("movl %%eax,%%cr3"::"a" (0))
+
+/* these are not to be changed without changing head.s etc */
+#define LOW_MEM 0x100000
+extern unsigned long HIGH_MEMORY;
+#define PAGING_MEMORY (15*1024*1024)
+#define PAGING_PAGES (PAGING_MEMORY>>12)
+#define MAP_NR(addr) (((addr)-LOW_MEM)>>12)
+#define USED 100
+
+extern unsigned char mem_map [ PAGING_PAGES ];
+
+#define PAGE_DIRTY	0x40
+#define PAGE_ACCESSED	0x20
+#define PAGE_USER	0x04
+#define PAGE_RW		0x02
+#define PAGE_PRESENT	0x01
+
+#endif