| 48,6 → 48,8 |
|---|
| #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
| #define UDATA_ADDRESS UDATA_ADDRESS_ARCH |
| |
| #define AS_KERNEL (1<<0) /**< Kernel address space. */ |
| |
| enum as_area_type { |
| AS_AREA_TEXT = 1, AS_AREA_DATA, AS_AREA_STACK |
| }; |
| 61,7 → 63,7 |
|---|
| SPINLOCK_DECLARE(lock); |
| link_t link; |
| as_area_type_t type; |
| size_t size; /**< Size of this area. */ |
| size_t size; /**< Size of this area in multiples of PAGE_SIZE. */ |
| __address base; /**< Base address of this area. */ |
| index_t *mapping; /**< Map of physical frame numbers mapped to virtual page numbers in this area. */ |
| }; |
| 74,6 → 76,9 |
|---|
| * set up during system initialization. |
| */ |
| struct as { |
| /** Protected by asidlock. Must be acquired before as-> lock. */ |
| link_t as_with_asid_link; |
| |
| SPINLOCK_DECLARE(lock); |
| link_t as_area_head; |
| pte_t *ptl0; |
| 80,20 → 85,13 |
|---|
| asid_t asid; /**< Address space identifier. */ |
| }; |
| |
| extern as_t * as_create(pte_t *ptl0); |
| extern as_t * as_create(pte_t *ptl0, int flags); |
| extern as_area_t *as_area_create(as_t *as, as_area_type_t type, size_t size, __address base); |
| extern void as_area_set_mapping(as_area_t *a, index_t vpn, index_t pfn); |
| extern int as_page_fault(__address page); |
| extern void as_install(as_t *m); |
| |
| /* |
| * Each architecture should implement this function. |
| * Its main purpose is to do TLB purges according |
| * to architecture's requirements. Note that |
| * some architectures invalidate their TLB automatically |
| * on hardware address space switch (e.g. ia32 and |
| * amd64). |
| */ |
| /* Interface to be implemented by architectures. */ |
| #ifndef as_install_arch |
| extern void as_install_arch(as_t *as); |
| #endif /* !def as_install_arch */ |