WebSVN – HelenOS – Diff – //branches/dynload/kernel/arch/ia32/include/mm/page.h



#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \
    (((pte_t *) (ptl3))[(i)].frame_address = (a) >> 12)
 
/* Get PTE flags accessors for each level. */
#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))
 
/* Set PTE flags accessors for each level. */
#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))
 
/* Macros for querying the last level entries. */
#define PTE_VALID_ARCH(p) \
    (*((uint32_t *) (p)) != 0)
#define PTE_PRESENT_ARCH(p) \

#define PFERR_CODE_US       (1 << 2)
 
/** When bit on this position is 1, a reserved bit was set in page directory. */
#define PFERR_CODE_RSVD     (1 << 3)    
 
static inline int get_pt_flags(pte_t *pt, size_t i)
{
    pte_t *p = &pt[i];
   
    return ((!p->page_cache_disable) << PAGE_CACHEABLE_SHIFT |
        (!p->present) << PAGE_PRESENT_SHIFT |

        p->writeable << PAGE_WRITE_SHIFT |
        1 << PAGE_EXEC_SHIFT |
        p->global << PAGE_GLOBAL_SHIFT);
}
 
static inline void set_pt_flags(pte_t *pt, size_t i, int flags)
{
    pte_t *p = &pt[i];
   
    p->page_cache_disable = !(flags & PAGE_CACHEABLE);
    p->present = !(flags & PAGE_NOT_PRESENT);

Subversion Repositories HelenOS

(root)//branches/dynload/kernel/arch/ia32/include/mm/page.h – Rev 3403 → 4691

Rev 3403		Rev 4691
Line 93...		Line 93...
93	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \	93	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) \
94	(((pte_t *) (ptl3))[(i)].frame_address = (a) >> 12)	94	(((pte_t *) (ptl3))[(i)].frame_address = (a) >> 12)
95		95
96	/* Get PTE flags accessors for each level. */	96	/* Get PTE flags accessors for each level. */
97	#define GET_PTL1_FLAGS_ARCH(ptl0, i) \	97	#define GET_PTL1_FLAGS_ARCH(ptl0, i) \
98	get_pt_flags((pte_t *) (ptl0), (index_t) (i))	98	get_pt_flags((pte_t *) (ptl0), (size_t) (i))
99	#define GET_PTL2_FLAGS_ARCH(ptl1, i) \	99	#define GET_PTL2_FLAGS_ARCH(ptl1, i) \
100	PAGE_PRESENT	100	PAGE_PRESENT
101	#define GET_PTL3_FLAGS_ARCH(ptl2, i) \	101	#define GET_PTL3_FLAGS_ARCH(ptl2, i) \
102	PAGE_PRESENT	102	PAGE_PRESENT
103	#define GET_FRAME_FLAGS_ARCH(ptl3, i) \	103	#define GET_FRAME_FLAGS_ARCH(ptl3, i) \
104	get_pt_flags((pte_t *) (ptl3), (index_t) (i))	104	get_pt_flags((pte_t *) (ptl3), (size_t) (i))
105		105
106	/* Set PTE flags accessors for each level. */	106	/* Set PTE flags accessors for each level. */
107	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) \	107	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) \
108	set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x))	108	set_pt_flags((pte_t *) (ptl0), (size_t) (i), (x))
109	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)	109	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
110	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)	110	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
111	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) \	111	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) \
112	set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x))	112	set_pt_flags((pte_t *) (ptl3), (size_t) (i), (x))
113		113
114	/* Macros for querying the last level entries. */	114	/* Macros for querying the last level entries. */
115	#define PTE_VALID_ARCH(p) \	115	#define PTE_VALID_ARCH(p) \
116	(((uint32_t ) (p)) != 0)	116	(((uint32_t ) (p)) != 0)
117	#define PTE_PRESENT_ARCH(p) \	117	#define PTE_PRESENT_ARCH(p) \
Line 143...		Line 143...
143	#define PFERR_CODE_US (1 << 2)	143	#define PFERR_CODE_US (1 << 2)
144		144
145	/** When bit on this position is 1, a reserved bit was set in page directory. */	145	/** When bit on this position is 1, a reserved bit was set in page directory. */
146	#define PFERR_CODE_RSVD (1 << 3)	146	#define PFERR_CODE_RSVD (1 << 3)
147		147
148	static inline int get_pt_flags(pte_t *pt, index_t i)	148	static inline int get_pt_flags(pte_t *pt, size_t i)
149	{	149	{
150	pte_t *p = &pt[i];	150	pte_t *p = &pt[i];
151		151
152	return ((!p->page_cache_disable) << PAGE_CACHEABLE_SHIFT \|	152	return ((!p->page_cache_disable) << PAGE_CACHEABLE_SHIFT \|
153	(!p->present) << PAGE_PRESENT_SHIFT \|	153	(!p->present) << PAGE_PRESENT_SHIFT \|
Line 156...		Line 156...
156	p->writeable << PAGE_WRITE_SHIFT \|	156	p->writeable << PAGE_WRITE_SHIFT \|
157	1 << PAGE_EXEC_SHIFT \|	157	1 << PAGE_EXEC_SHIFT \|
158	p->global << PAGE_GLOBAL_SHIFT);	158	p->global << PAGE_GLOBAL_SHIFT);
159	}	159	}
160		160
161	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)	161	static inline void set_pt_flags(pte_t *pt, size_t i, int flags)
162	{	162	{
163	pte_t *p = &pt[i];	163	pte_t *p = &pt[i];
164		164
165	p->page_cache_disable = !(flags & PAGE_CACHEABLE);	165	p->page_cache_disable = !(flags & PAGE_CACHEABLE);
166	p->present = !(flags & PAGE_NOT_PRESENT);	166	p->present = !(flags & PAGE_NOT_PRESENT);