WebSVN – HelenOS – Diff – /trunk/kernel/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.
 */
 
/** @addtogroup amd64mm
 * @{
 */
/** @file
 */
 
/** Paging on AMD64
 *
 * The space is divided in positive numbers - userspace and
 * negative numbers - kernel space. The 'negative' space starting
 * with 0xffff800000000000 and ending with 0xffffffff80000000
 * (-2GB) is identically mapped physical memory. The area
 * (0xffffffff80000000 ... 0xffffffffffffffff is again identically
 * mapped first 2GB.
 *
 * ATTENTION - PA2KA(KA2PA(x)) != x if 'x' is in kernel
 */
 
#ifndef KERN_amd64_PAGE_H_
#define KERN_amd64_PAGE_H_
 
#include <arch/mm/frame.h>
 
#define PAGE_WIDTH  FRAME_WIDTH
#define PAGE_SIZE   FRAME_SIZE
 
#define PAGE_COLOR_BITS 0           /* dummy */
 
#ifdef KERNEL
 
#ifndef __ASM__
#   include <mm/mm.h>
#   include <arch/types.h>
#   include <arch/interrupt.h>
 
static inline uintptr_t ka2pa(uintptr_t x)
{
    if (x > 0xffffffff80000000)
        return x - 0xffffffff80000000;
    else
        return x - 0xffff800000000000;
}
 
#   define KA2PA(x)      ka2pa((uintptr_t)x)
#   define PA2KA_CODE(x)      (((uintptr_t) (x)) + 0xffffffff80000000)
#   define PA2KA(x)      (((uintptr_t) (x)) + 0xffff800000000000)
#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_SIZE_ARCH       ONE_FRAME
#define PTL1_SIZE_ARCH       ONE_FRAME
#define PTL2_SIZE_ARCH       ONE_FRAME
#define PTL3_SIZE_ARCH       ONE_FRAME
 
#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 *) ((((uint64_t) ((pte_t *)(ptl0))[(i)].addr_12_31)<<12) | (((uint64_t) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))
#define GET_PTL2_ADDRESS_ARCH(ptl1, i)      ((pte_t *) ((((uint64_t) ((pte_t *)(ptl1))[(i)].addr_12_31)<<12) | (((uint64_t) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))
#define GET_PTL3_ADDRESS_ARCH(ptl2, i)      ((pte_t *) ((((uint64_t) ((pte_t *)(ptl2))[(i)].addr_12_31)<<12) | (((uint64_t) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))
#define GET_FRAME_ADDRESS_ARCH(ptl3, i)     ((uintptr_t *) ((((uint64_t) ((pte_t *)(ptl3))[(i)].addr_12_31)<<12) | (((uint64_t) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))
 
#define SET_PTL0_ADDRESS_ARCH(ptl0)     (write_cr3((uintptr_t) (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)           (*((uint64_t *) (p)) != 0)
#define PTE_PRESENT_ARCH(p)         ((p)->present != 0)
#define PTE_GET_FRAME_ARCH(p)           ((((uintptr_t)(p)->addr_12_31)<<12) | ((uintptr_t)(p)->addr_32_51<<32))
#define PTE_WRITABLE_ARCH(p)            ((p)->writeable != 0)
#define PTE_EXECUTABLE_ARCH(p)          ((p)->no_execute == 0)
 
#ifndef __ASM__
 
/* Page fault error codes. */
 
/** When bit on this position is 0, the page fault was caused by a not-present page. */
#define PFERR_CODE_P            (1<<0)  
 
/** When bit on this position is 1, the page fault was caused by a write. */
#define PFERR_CODE_RW           (1<<1)
 
/** When bit on this position is 1, the page fault was caused in user mode. */
#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)
 
/** When bit on this position os 1, the page fault was caused during instruction fecth. */
#define PFERR_CODE_ID       (1<<4)
 
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, uintptr_t 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);
extern void page_fault(int n, istate_t *istate);
 
#endif /* __ASM__ */
 
#endif /* KERNEL */
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/amd64/include/mm/page.h – Rev 2089 → 2465

Rev 2089		Rev 2465
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	/** @addtogroup amd64mm	29	/** @addtogroup amd64mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	/** Paging on AMD64	35	/** Paging on AMD64
36	*	36	*
37	* The space is divided in positive numbers - userspace and	37	* The space is divided in positive numbers - userspace and
38	* negative numbers - kernel space. The 'negative' space starting	38	* negative numbers - kernel space. The 'negative' space starting
39	* with 0xffff800000000000 and ending with 0xffffffff80000000	39	* with 0xffff800000000000 and ending with 0xffffffff80000000
40	* (-2GB) is identically mapped physical memory. The area	40	* (-2GB) is identically mapped physical memory. The area
41	* (0xffffffff80000000 ... 0xffffffffffffffff is again identically	41	* (0xffffffff80000000 ... 0xffffffffffffffff is again identically
42	* mapped first 2GB.	42	* mapped first 2GB.
43	*	43	*
44	* ATTENTION - PA2KA(KA2PA(x)) != x if 'x' is in kernel	44	* ATTENTION - PA2KA(KA2PA(x)) != x if 'x' is in kernel
45	*/	45	*/
46		46
47	#ifndef KERN_amd64_PAGE_H_	47	#ifndef KERN_amd64_PAGE_H_
48	#define KERN_amd64_PAGE_H_	48	#define KERN_amd64_PAGE_H_
49		49
50	#include <arch/mm/frame.h>	50	#include <arch/mm/frame.h>
51		51
52	#define PAGE_WIDTH FRAME_WIDTH	52	#define PAGE_WIDTH FRAME_WIDTH
53	#define PAGE_SIZE FRAME_SIZE	53	#define PAGE_SIZE FRAME_SIZE
54		54
55	#define PAGE_COLOR_BITS 0 /* dummy */	55	#define PAGE_COLOR_BITS 0 /* dummy */
56		56
57	#ifdef KERNEL	57	#ifdef KERNEL
58		58
59	#ifndef __ASM__	59	#ifndef __ASM__
60	# include <mm/mm.h>	60	# include <mm/mm.h>
61	# include <arch/types.h>	61	# include <arch/types.h>
62	# include <arch/interrupt.h>	62	# include <arch/interrupt.h>
63		63
64	static inline uintptr_t ka2pa(uintptr_t x)	64	static inline uintptr_t ka2pa(uintptr_t x)
65	{	65	{
66	if (x > 0xffffffff80000000)	66	if (x > 0xffffffff80000000)
67	return x - 0xffffffff80000000;	67	return x - 0xffffffff80000000;
68	else	68	else
69	return x - 0xffff800000000000;	69	return x - 0xffff800000000000;
70	}	70	}
71		71
72	# define KA2PA(x) ka2pa((uintptr_t)x)	72	# define KA2PA(x) ka2pa((uintptr_t)x)
73	# define PA2KA_CODE(x) (((uintptr_t) (x)) + 0xffffffff80000000)	73	# define PA2KA_CODE(x) (((uintptr_t) (x)) + 0xffffffff80000000)
74	# define PA2KA(x) (((uintptr_t) (x)) + 0xffff800000000000)	74	# define PA2KA(x) (((uintptr_t) (x)) + 0xffff800000000000)
75	#else	75	#else
76	# define KA2PA(x) ((x) - 0xffffffff80000000)	76	# define KA2PA(x) ((x) - 0xffffffff80000000)
77	# define PA2KA(x) ((x) + 0xffffffff80000000)	77	# define PA2KA(x) ((x) + 0xffffffff80000000)
78	#endif	78	#endif
79		79
80	#define PTL0_ENTRIES_ARCH 512	80	#define PTL0_ENTRIES_ARCH 512
81	#define PTL1_ENTRIES_ARCH 512	81	#define PTL1_ENTRIES_ARCH 512
82	#define PTL2_ENTRIES_ARCH 512	82	#define PTL2_ENTRIES_ARCH 512
83	#define PTL3_ENTRIES_ARCH 512	83	#define PTL3_ENTRIES_ARCH 512
84		84
-		85	#define PTL0_SIZE_ARCH ONE_FRAME
-		86	#define PTL1_SIZE_ARCH ONE_FRAME
-		87	#define PTL2_SIZE_ARCH ONE_FRAME
-		88	#define PTL3_SIZE_ARCH ONE_FRAME
-		89
85	#define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff)	90	#define PTL0_INDEX_ARCH(vaddr) (((vaddr)>>39)&0x1ff)
86	#define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff)	91	#define PTL1_INDEX_ARCH(vaddr) (((vaddr)>>30)&0x1ff)
87	#define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff)	92	#define PTL2_INDEX_ARCH(vaddr) (((vaddr)>>21)&0x1ff)
88	#define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff)	93	#define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>12)&0x1ff)
89		94
90	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl0))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))	95	#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl0))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl0))[(i)].addr_32_51)<<32 )))
91	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl1))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))	96	#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl1))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl1))[(i)].addr_32_51)<<32 )))
92	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl2))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))	97	#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t ) ((((uint64_t) ((pte_t )(ptl2))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl2))[(i)].addr_32_51)<<32 )))
93	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((uintptr_t ) ((((uint64_t) ((pte_t )(ptl3))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))	98	#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((uintptr_t ) ((((uint64_t) ((pte_t )(ptl3))[(i)].addr_12_31)<<12) \| (((uint64_t) ((pte_t *)(ptl3))[(i)].addr_32_51)<<32 )))
94		99
95	#define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((uintptr_t) (ptl0)))	100	#define SET_PTL0_ADDRESS_ARCH(ptl0) (write_cr3((uintptr_t) (ptl0)))
96	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)	101	#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) set_pt_addr((pte_t *)(ptl0), (index_t)(i), a)
97	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)	102	#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) set_pt_addr((pte_t *)(ptl1), (index_t)(i), a)
98	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)	103	#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) set_pt_addr((pte_t *)(ptl2), (index_t)(i), a)
99	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)	104	#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) set_pt_addr((pte_t *)(ptl3), (index_t)(i), a)
100		105
101	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i))	106	#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i))
102	#define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i))	107	#define GET_PTL2_FLAGS_ARCH(ptl1, i) get_pt_flags((pte_t *)(ptl1), (index_t)(i))
103	#define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i))	108	#define GET_PTL3_FLAGS_ARCH(ptl2, i) get_pt_flags((pte_t *)(ptl2), (index_t)(i))
104	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i))	109	#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i))
105		110
106	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))	111	#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
107	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))	112	#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) set_pt_flags((pte_t *)(ptl1), (index_t)(i), (x))
108	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))	113	#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) set_pt_flags((pte_t *)(ptl2), (index_t)(i), (x))
109	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))	114	#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
110		115
111	#define PTE_VALID_ARCH(p) (((uint64_t ) (p)) != 0)	116	#define PTE_VALID_ARCH(p) (((uint64_t ) (p)) != 0)
112	#define PTE_PRESENT_ARCH(p) ((p)->present != 0)	117	#define PTE_PRESENT_ARCH(p) ((p)->present != 0)
113	#define PTE_GET_FRAME_ARCH(p) ((((uintptr_t)(p)->addr_12_31)<<12) \| ((uintptr_t)(p)->addr_32_51<<32))	118	#define PTE_GET_FRAME_ARCH(p) ((((uintptr_t)(p)->addr_12_31)<<12) \| ((uintptr_t)(p)->addr_32_51<<32))
114	#define PTE_WRITABLE_ARCH(p) ((p)->writeable != 0)	119	#define PTE_WRITABLE_ARCH(p) ((p)->writeable != 0)
115	#define PTE_EXECUTABLE_ARCH(p) ((p)->no_execute == 0)	120	#define PTE_EXECUTABLE_ARCH(p) ((p)->no_execute == 0)
116		121
117	#ifndef __ASM__	122	#ifndef __ASM__
118		123
119	/* Page fault error codes. */	124	/* Page fault error codes. */
120		125
121	/** When bit on this position is 0, the page fault was caused by a not-present page. */	126	/** When bit on this position is 0, the page fault was caused by a not-present page. */
122	#define PFERR_CODE_P (1<<0)	127	#define PFERR_CODE_P (1<<0)
123		128
124	/** When bit on this position is 1, the page fault was caused by a write. */	129	/** When bit on this position is 1, the page fault was caused by a write. */
125	#define PFERR_CODE_RW (1<<1)	130	#define PFERR_CODE_RW (1<<1)
126		131
127	/** When bit on this position is 1, the page fault was caused in user mode. */	132	/** When bit on this position is 1, the page fault was caused in user mode. */
128	#define PFERR_CODE_US (1<<2)	133	#define PFERR_CODE_US (1<<2)
129		134
130	/** When bit on this position is 1, a reserved bit was set in page directory. */	135	/** When bit on this position is 1, a reserved bit was set in page directory. */
131	#define PFERR_CODE_RSVD (1<<3)	136	#define PFERR_CODE_RSVD (1<<3)
132		137
133	/** When bit on this position os 1, the page fault was caused during instruction fecth. */	138	/** When bit on this position os 1, the page fault was caused during instruction fecth. */
134	#define PFERR_CODE_ID (1<<4)	139	#define PFERR_CODE_ID (1<<4)
135		140
136	static inline int get_pt_flags(pte_t *pt, index_t i)	141	static inline int get_pt_flags(pte_t *pt, index_t i)
137	{	142	{
138	pte_t *p = &pt[i];	143	pte_t *p = &pt[i];
139		144
140	return (	145	return (
141	(!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT \|	146	(!p->page_cache_disable)<<PAGE_CACHEABLE_SHIFT \|
142	(!p->present)<<PAGE_PRESENT_SHIFT \|	147	(!p->present)<<PAGE_PRESENT_SHIFT \|
143	p->uaccessible<<PAGE_USER_SHIFT \|	148	p->uaccessible<<PAGE_USER_SHIFT \|
144	1<<PAGE_READ_SHIFT \|	149	1<<PAGE_READ_SHIFT \|
145	p->writeable<<PAGE_WRITE_SHIFT \|	150	p->writeable<<PAGE_WRITE_SHIFT \|
146	(!p->no_execute)<<PAGE_EXEC_SHIFT \|	151	(!p->no_execute)<<PAGE_EXEC_SHIFT \|
147	p->global<<PAGE_GLOBAL_SHIFT	152	p->global<<PAGE_GLOBAL_SHIFT
148	);	153	);
149	}	154	}
150		155
151	static inline void set_pt_addr(pte_t *pt, index_t i, uintptr_t a)	156	static inline void set_pt_addr(pte_t *pt, index_t i, uintptr_t a)
152	{	157	{
153	pte_t *p = &pt[i];	158	pte_t *p = &pt[i];
154		159
155	p->addr_12_31 = (a >> 12) & 0xfffff;	160	p->addr_12_31 = (a >> 12) & 0xfffff;
156	p->addr_32_51 = a >> 32;	161	p->addr_32_51 = a >> 32;
157	}	162	}
158		163
159	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)	164	static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
160	{	165	{
161	pte_t *p = &pt[i];	166	pte_t *p = &pt[i];
162		167
163	p->page_cache_disable = !(flags & PAGE_CACHEABLE);	168	p->page_cache_disable = !(flags & PAGE_CACHEABLE);
164	p->present = !(flags & PAGE_NOT_PRESENT);	169	p->present = !(flags & PAGE_NOT_PRESENT);
165	p->uaccessible = (flags & PAGE_USER) != 0;	170	p->uaccessible = (flags & PAGE_USER) != 0;
166	p->writeable = (flags & PAGE_WRITE) != 0;	171	p->writeable = (flags & PAGE_WRITE) != 0;
167	p->no_execute = (flags & PAGE_EXEC) == 0;	172	p->no_execute = (flags & PAGE_EXEC) == 0;
168	p->global = (flags & PAGE_GLOBAL) != 0;	173	p->global = (flags & PAGE_GLOBAL) != 0;
169		174
170	/*	175	/*
171	* Ensure that there is at least one bit set even if the present bit is cleared.	176	* Ensure that there is at least one bit set even if the present bit is cleared.
172	*/	177	*/
173	p->soft_valid = 1;	178	p->soft_valid = 1;
174	}	179	}
175		180
176	extern void page_arch_init(void);	181	extern void page_arch_init(void);
177	extern void page_fault(int n, istate_t *istate);	182	extern void page_fault(int n, istate_t *istate);
178		183
179	#endif /* __ASM__ */	184	#endif /* __ASM__ */
180		185
181	#endif /* KERNEL */	186	#endif /* KERNEL */
182		187
183	#endif	188	#endif
184		189
185	/** @}	190	/** @}
186	*/	191	*/
187		192