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Basic VM and other minor improvements.

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Not complete, probably not fully debugged or optimized.
This commit is contained in:
Ben Gras
2008-11-19 12:26:10 +00:00
parent c888305e21
commit c078ec0331
273 changed files with 10814 additions and 4305 deletions
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26
include/sys/vm.h
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@@ -2,8 +2,6 @@
sys/vm.h
*/
#define PAGE_SIZE 4096
/* MIOCMAP */
struct mapreq
{
@@ -13,18 +11,14 @@ struct mapreq
int readonly;
};
/* i386 paging constants */
#define I386_VM_PRESENT 0x001 /* Page is present */
#define I386_VM_WRITE 0x002 /* Read/write access allowed */
#define I386_VM_USER 0x004 /* User access allowed */
#define I386_VM_PWT 0x008 /* Write through */
#define I386_VM_PCD 0x010 /* Cache disable */
#define I386_VM_ADDR_MASK 0xFFFFF000 /* physical address */
#define I386_VM_PT_ENT_SIZE 4 /* Size of a page table entry */
#define I386_VM_DIR_ENTRIES 1024 /* Number of entries in a page dir */
#define I386_VM_DIR_ENT_SHIFT 22 /* Shift to get entry in page dir. */
#define I386_VM_PT_ENT_SHIFT 12 /* Shift to get entry in page table */
#define I386_VM_PT_ENT_MASK 0x3FF /* Mask to get entry in page table */
#define I386_CR0_PG 0x80000000 /* Enable paging */
/* MIOCMAPVM */
struct mapreqvm
{
int flags; /* reserved, must be 0 */
off_t phys_offset;
size_t size;
int readonly;
char reserved[40]; /* reserved, must be 0 */
void *vaddr_ret; /* result vaddr */
};