WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/amd64/include/mm/page.h


/*
 * Copyright (C) 2005 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef __amd64_PAGE_H__
#define __amd64_PAGE_H__
 
#include <arch/mm/frame.h>
 
#define PAGE_WIDTH  FRAME_WIDTH
#define PAGE_SIZE   FRAME_SIZE
 
#ifdef KERNEL
 
#ifndef __ASM__
#  include <mm/page.h>
#  include <arch/types.h>
#endif
 
 
 
 
#ifndef __ASM__
# define KA2PA(x)      (((__address) (x)) - 0xffffffff80000000)
# define PA2KA(x)      (((__address) (x)) + 0xffffffff80000000)
#else
# define KA2PA(x)      ((x) - 0xffffffff80000000)
# define PA2KA(x)      ((x) + 0xffffffff80000000)
#endif
 
#define PTL0_ENTRIES_ARCH   512
#define PTL1_ENTRIES_ARCH   512
#define PTL2_ENTRIES_ARCH   512
#define PTL3_ENTRIES_ARCH   512
 
#define PTL0_INDEX_ARCH(vaddr)  (((vaddr)>>39)&0x1ff)
#define PTL1_INDEX_ARCH(vaddr)  (((vaddr)>>30)&0x1ff)
#define PTL2_INDEX_ARCH(vaddr)  (((vaddr)>>21)&0x1ff)
#define PTL3_INDEX_ARCH(vaddr)  (((vaddr)>>12)&0x1ff)
 
#define GET_PTL1_ADDRESS_ARCH(ptl0, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl0))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))
#define GET_PTL2_ADDRESS_ARCH(ptl1, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl1))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))
#define GET_PTL3_ADDRESS_ARCH(ptl2, i)      ((pte_t *) ((((__u64) ((pte_t *)(ptl2))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))
#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     ((__address *) ((((__u64) ((pte_t *)(ptl3))[(i)].addr_12_31)<<12) | (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))
 
#define SET_PTL0_ADDRESS_ARCH(ptl0)     (write_cr3((__address) (ptl0)))
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a)   set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)       set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)       set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a)  set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)
 
#define GET_PTL1_FLAGS_ARCH(ptl0, i)        get_pt_flags((pte_t *)(ptl0), (index_t)(i))
#define GET_PTL2_FLAGS_ARCH(ptl1, i)        get_pt_flags((pte_t *)(ptl1), (index_t)(i))
#define GET_PTL3_FLAGS_ARCH(ptl2, i)        get_pt_flags((pte_t *)(ptl2), (index_t)(i))
#define GET_FRAME_FLAGS_ARCH(ptl3, i)       get_pt_flags((pte_t *)(ptl3), (index_t)(i))
 
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x)     set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x)         set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x)         set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x)    set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
 
#define PTE_VALID_ARCH(p)           (*((__u64 *) (p)) != 0)
 
#ifndef __ASM__
 
/** Page Table Entry. */
struct page_specifier {
    unsigned present : 1;
    unsigned writeable : 1;
    unsigned uaccessible : 1;
    unsigned page_write_through : 1;
    unsigned page_cache_disable : 1;
    unsigned accessed : 1;
    unsigned dirty : 1;
    unsigned unused: 1;
    unsigned global : 1;
    unsigned soft_valid : 1;        /**< Valid content even if present bit is cleared. */
    unsigned avl : 2;
    unsigned addr_12_31 : 30;
    unsigned addr_32_51 : 21;
    unsigned no_execute : 1;
} __attribute__ ((packed));
 
static inline int get_pt_flags(pte_t *pt, index_t i)
{
    pte_t *p = &pt[i];
   
    return (
        (!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT |
        (!p->present)<<PAGE_PRESENT_SHIFT |
        p->uaccessible<<PAGE_USER_SHIFT |
        1<<PAGE_READ_SHIFT |
        p->writeable<<PAGE_WRITE_SHIFT |
        (!p->no_execute)<<PAGE_EXEC_SHIFT |
        p->global<<PAGE_GLOBAL_SHIFT
    );
}
 
static inline void set_pt_addr(pte_t *pt, index_t i, __address a)
{
    pte_t *p = &pt[i];
 
    p->addr_12_31 = (a >> 12) & 0xfffff;
    p->addr_32_51 = a >> 32;
}
 
static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
{
    pte_t *p = &pt[i];
   
    p->page_cache_disable = !(flags & PAGE_CACHEABLE);
    p->present = !(flags & PAGE_NOT_PRESENT);
    p->uaccessible = (flags & PAGE_USER) != 0;
    p->writeable = (flags & PAGE_WRITE) != 0;
    p->no_execute = (flags & PAGE_EXEC) == 0;
    p->global = (flags & PAGE_GLOBAL) != 0;
   
    /*
     * Ensure that there is at least one bit set even if the present bit is cleared.
     */
    p->soft_valid = 1;
}
 
extern void page_arch_init(void);
 
#endif /* __ASM__ */
 
#endif /* KERNEL */
 
#endif
 

Rev 832	Rev 967
1	/*	1	/*
2	* Copyright (C) 2005 Ondrej Palkovsky	2	* Copyright (C) 2005 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#ifndef __amd64_PAGE_H__	29	#ifndef __amd64_PAGE_H__
30	#define __amd64_PAGE_H__	30	#define __amd64_PAGE_H__
31		31
32	#include <arch/mm/frame.h>	32	#include <arch/mm/frame.h>
33		33
-		34	#define PAGE_WIDTH FRAME_WIDTH
-		35	#define PAGE_SIZE FRAME_SIZE
-		36
-		37	#ifdef KERNEL
-		38
34	#ifndef __ASM__	39	#ifndef __ASM__
35	# include <mm/page.h>	40	# include <mm/page.h>
36	# include <arch/types.h>	41	# include <arch/types.h>
37	#endif	42	#endif
38		43
39	#define PAGE_WIDTH FRAME_WIDTH	-
40	#define PAGE_SIZE FRAME_SIZE	-
41		-
42	#ifndef __ASM__	44	#ifndef __ASM__
43	# define KA2PA(x) (((__address) (x)) - 0xffffffff80000000)	45	# define KA2PA(x) (((__address) (x)) - 0xffffffff80000000)
44	# define PA2KA(x) (((__address) (x)) + 0xffffffff80000000)	46	# define PA2KA(x) (((__address) (x)) + 0xffffffff80000000)
45	#else	47	#else
46	# define KA2PA(x) ((x) - 0xffffffff80000000)	48	# define KA2PA(x) ((x) - 0xffffffff80000000)
47	# define PA2KA(x) ((x) + 0xffffffff80000000)	49	# define PA2KA(x) ((x) + 0xffffffff80000000)
48	#endif	50	#endif
49		51
50	#define PTL0_ENTRIES_ARCH 512	52	#define PTL0_ENTRIES_ARCH 512
51	#define PTL1_ENTRIES_ARCH 512	53	#define PTL1_ENTRIES_ARCH 512
52	#define PTL2_ENTRIES_ARCH 512	54	#define PTL2_ENTRIES_ARCH 512
53	#define PTL3_ENTRIES_ARCH 512	55	#define PTL3_ENTRIES_ARCH 512
54		56
55	#define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff)	57	#define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff)
56	#define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff)	58	#define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff)
57	#define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff)	59	#define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff)
58	#define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff)	60	#define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff)
59		61
60	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t ) ((((__u64) ((pte_t )(ptl0))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))	62	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t ) ((((__u64) ((pte_t )(ptl0))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))
61	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t ) ((((__u64) ((pte_t )(ptl1))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))	63	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t ) ((((__u64) ((pte_t )(ptl1))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))
62	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t ) ((((__u64) ((pte_t )(ptl2))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))	64	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t ) ((((__u64) ((pte_t )(ptl2))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))
63	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address ) ((((__u64) ((pte_t )(ptl3))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))	65	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((__address ) ((((__u64) ((pte_t )(ptl3))[(i)].addr_12_31)<<12) \| (((__u64) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))
64		66
65	#define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0)))	67	#define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((__address) (ptl0)))
66	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)	68	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)
67	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)	69	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)
68	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)	70	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)
69	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)	71	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)
70		72
71	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i))	73	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i))
72	#define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i))	74	#define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i))
73	#define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i))	75	#define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i))
74	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i))	76	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i))
75		77
76	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))	78	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
77	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))	79	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))
78	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))	80	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))
79	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))	81	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
80		82
81	#define PTE_VALID_ARCH(p) (((__u64 ) (p)) != 0)	83	#define PTE_VALID_ARCH(p) (((__u64 ) (p)) != 0)
82		84
83	#ifndef __ASM__	85	#ifndef __ASM__
84		86
85	/** Page Table Entry. */	87	/** Page Table Entry. */
86	struct page_specifier {	88	struct page_specifier {
87	unsigned present : 1;	89	unsigned present : 1;
88	unsigned writeable : 1;	90	unsigned writeable : 1;
89	unsigned uaccessible : 1;	91	unsigned uaccessible : 1;
90	unsigned page_write_through : 1;	92	unsigned page_write_through : 1;
91	unsigned page_cache_disable : 1;	93	unsigned page_cache_disable : 1;
92	unsigned accessed : 1;	94	unsigned accessed : 1;
93	unsigned dirty : 1;	95	unsigned dirty : 1;
94	unsigned unused: 1;	96	unsigned unused: 1;
95	unsigned global : 1;	97	unsigned global : 1;
96	unsigned soft_valid : 1; /*< Valid content even if present bit is cleared. /	98	unsigned soft_valid : 1; /*< Valid content even if present bit is cleared. /
97	unsigned avl : 2;	99	unsigned avl : 2;
98	unsigned addr_12_31 : 30;	100	unsigned addr_12_31 : 30;
99	unsigned addr_32_51 : 21;	101	unsigned addr_32_51 : 21;
100	unsigned no_execute : 1;	102	unsigned no_execute : 1;
101	} __attribute__ ((packed));	103	} __attribute__ ((packed));
102		104
103	static inline int get_pt_flags(pte_t *pt, index_t i)	105	static inline int get_pt_flags(pte_t *pt, index_t i)
104	{	106	{
105	pte_t *p = &pt[i];	107	pte_t *p = &pt[i];
106		108
107	return (	109	return (
108	(!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT \|	110	(!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT \|
109	(!p->present)<<PAGE_PRESENT_SHIFT \|	111	(!p->present)<<PAGE_PRESENT_SHIFT \|
110	p->uaccessible<<PAGE_USER_SHIFT \|	112	p->uaccessible<<PAGE_USER_SHIFT \|
111	1<<PAGE_READ_SHIFT \|	113	1<<PAGE_READ_SHIFT \|
112	p->writeable<<PAGE_WRITE_SHIFT \|	114	p->writeable<<PAGE_WRITE_SHIFT \|
113	(!p->no_execute)<<PAGE_EXEC_SHIFT \|	115	(!p->no_execute)<<PAGE_EXEC_SHIFT \|
114	p->global<<PAGE_GLOBAL_SHIFT	116	p->global<<PAGE_GLOBAL_SHIFT
115	);	117	);
116	}	118	}
117		119
118	static inline void set_pt_addr(pte_t *pt, index_t i, __address a)	120	static inline void set_pt_addr(pte_t *pt, index_t i, __address a)
119	{	121	{
120	pte_t *p = &pt[i];	122	pte_t *p = &pt[i];
121		123
122	p->addr_12_31 = (a >> 12) & 0xfffff;	124	p->addr_12_31 = (a >> 12) & 0xfffff;
123	p->addr_32_51 = a >> 32;	125	p->addr_32_51 = a >> 32;
124	}	126	}
125		127
126	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)	128	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
127	{	129	{
128	pte_t *p = &pt[i];	130	pte_t *p = &pt[i];
129		131
130	p->page_cache_disable = !(flags & PAGE_CACHEABLE);	132	p->page_cache_disable = !(flags & PAGE_CACHEABLE);
131	p->present = !(flags & PAGE_NOT_PRESENT);	133	p->present = !(flags & PAGE_NOT_PRESENT);
132	p->uaccessible = (flags & PAGE_USER) != 0;	134	p->uaccessible = (flags & PAGE_USER) != 0;
133	p->writeable = (flags & PAGE_WRITE) != 0;	135	p->writeable = (flags & PAGE_WRITE) != 0;
134	p->no_execute = (flags & PAGE_EXEC) == 0;	136	p->no_execute = (flags & PAGE_EXEC) == 0;
135	p->global = (flags & PAGE_GLOBAL) != 0;	137	p->global = (flags & PAGE_GLOBAL) != 0;
136		138
137	/*	139	/*
138	* Ensure that there is at least one bit set even if the present bit is cleared.	140	* Ensure that there is at least one bit set even if the present bit is cleared.
139	*/	141	*/
140	p->soft_valid = 1;	142	p->soft_valid = 1;
141	}	143	}
142		144
143	extern void page_arch_init(void);	145	extern void page_arch_init(void);
144		146
-		147	#endif /* __ASM__ */
-		148
145	#endif	149	#endif /* KERNEL */
146		150
147	#endif	151	#endif
148		152

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/amd64/include/mm/page.h – Rev 832 → 967