HelenOS sources
This source file includes following definitions.
- get_pt_flags
- set_pt_flags
- set_pt_present
#ifndef KERN_ppc32_PAGE_H_
#define KERN_ppc32_PAGE_H_
#include <arch/mm/frame.h>
#define PAGE_WIDTH FRAME_WIDTH
#define PAGE_SIZE FRAME_SIZE
#ifndef __ASSEMBLER__
#define KA2PA(x) (((uintptr_t) (x)) - 0x80000000)
#define PA2KA(x) (((uintptr_t) (x)) + 0x80000000)
#else
#define KA2PA(x) ((x) - 0x80000000)
#define PA2KA(x) ((x) + 0x80000000)
#endif
#define PTL0_ENTRIES_ARCH 1024
#define PTL1_ENTRIES_ARCH 0
#define PTL2_ENTRIES_ARCH 0
#define PTL3_ENTRIES_ARCH 1024
#define PTL0_FRAMES_ARCH 1
#define PTL1_FRAMES_ARCH 1
#define PTL2_FRAMES_ARCH 1
#define PTL3_FRAMES_ARCH 1
#define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff)
#define PTL1_INDEX_ARCH(vaddr) 0
#define PTL2_INDEX_ARCH(vaddr) 0
#define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff)
#define GET_PTL1_ADDRESS_ARCH(ptl0, i) \
(((pte_t *) (ptl0))[(i)].pfn << 12)
#define GET_PTL2_ADDRESS_ARCH(ptl1, i) \
(ptl1)
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) \
(ptl2)
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) \
(((pte_t *) (ptl3))[(i)].pfn << 12)
#define SET_PTL0_ADDRESS_ARCH(ptl0)
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) \
(((pte_t *) (ptl0))[(i)].pfn = (a) >> 12)
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \
(((pte_t *) (ptl3))[(i)].pfn = (a) >> 12)
#define GET_PTL1_FLAGS_ARCH(ptl0, i) \
get_pt_flags((pte_t *) (ptl0), (size_t) (i))
#define GET_PTL2_FLAGS_ARCH(ptl1, i) \
PAGE_PRESENT
#define GET_PTL3_FLAGS_ARCH(ptl2, i) \
PAGE_PRESENT
#define GET_FRAME_FLAGS_ARCH(ptl3, i) \
get_pt_flags((pte_t *) (ptl3), (size_t) (i))
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) \
set_pt_flags((pte_t *) (ptl0), (size_t) (i), (x))
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) \
set_pt_flags((pte_t *) (ptl3), (size_t) (i), (x))
#define SET_PTL1_PRESENT_ARCH(ptl0, i) \
set_pt_present((pte_t *) (ptl0), (size_t) (i))
#define SET_PTL2_PRESENT_ARCH(ptl1, i)
#define SET_PTL3_PRESENT_ARCH(ptl2, i)
#define SET_FRAME_PRESENT_ARCH(ptl3, i) \
set_pt_present((pte_t *) (ptl3), (size_t) (i))
#define PTE_VALID_ARCH(pte) ((pte)->valid != 0)
#define PTE_PRESENT_ARCH(pte) ((pte)->present != 0)
#define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn << 12)
#define PTE_WRITABLE_ARCH(pte) 1
#define PTE_EXECUTABLE_ARCH(pte) 1
#ifndef __ASSEMBLER__
#include <mm/mm.h>
#include <arch/interrupt.h>
#include <trace.h>
typedef struct {
unsigned int present : 1;
unsigned int page_write_through : 1;
unsigned int page_cache_disable : 1;
unsigned int accessed : 1;
unsigned int global : 1;
unsigned int valid : 1;
unsigned int pfn : 20;
} pte_t;
_NO_TRACE static inline unsigned int get_pt_flags(pte_t *pt, size_t i)
{
pte_t *entry = &pt[i];
return (((!entry->page_cache_disable) << PAGE_CACHEABLE_SHIFT) |
((!entry->present) << PAGE_PRESENT_SHIFT) |
(1 << PAGE_USER_SHIFT) |
(1 << PAGE_READ_SHIFT) |
(1 << PAGE_WRITE_SHIFT) |
(1 << PAGE_EXEC_SHIFT) |
(entry->global << PAGE_GLOBAL_SHIFT));
}
_NO_TRACE static inline void set_pt_flags(pte_t *pt, size_t i, int flags)
{
pte_t *entry = &pt[i];
entry->page_cache_disable = !(flags & PAGE_CACHEABLE);
entry->present = !(flags & PAGE_NOT_PRESENT);
entry->global = (flags & PAGE_GLOBAL) != 0;
entry->valid = 1;
}
_NO_TRACE static inline void set_pt_present(pte_t *pt, size_t i)
{
pte_t *entry = &pt[i];
entry->present = 1;
}
extern void page_arch_init(void);
#endif
#endif
HelenOS homepage, sources at GitHub