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| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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MySQL: ON MSSQL: OFF Oracle: OFF PostgreSQL: OFF Curl: OFF Sockets: ON Fetch: OFF Wget: ON Perl: ON |
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Disabled Functions: pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
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[ Processes ]
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/
usr/
src/
linux-headers-3.0.0-14/
arch/
cris/
include/
arch-v32/
arch/
- drwxr-xr-x
|
Viewing file:  mmu.h (4.14 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
#ifndef _ASM_CRIS_ARCH_MMU_H
#define _ASM_CRIS_ARCH_MMU_H
/* MMU context type. */
typedef struct
{
unsigned int page_id;
} mm_context_t;
/* Kernel memory segments. */
#define KSEG_F 0xf0000000UL
#define KSEG_E 0xe0000000UL
#define KSEG_D 0xd0000000UL
#define KSEG_C 0xc0000000UL
#define KSEG_B 0xb0000000UL
#define KSEG_A 0xa0000000UL
#define KSEG_9 0x90000000UL
#define KSEG_8 0x80000000UL
#define KSEG_7 0x70000000UL
#define KSEG_6 0x60000000UL
#define KSEG_5 0x50000000UL
#define KSEG_4 0x40000000UL
#define KSEG_3 0x30000000UL
#define KSEG_2 0x20000000UL
#define KSEG_1 0x10000000UL
#define KSEG_0 0x00000000UL
/*
* CRISv32 PTE bits:
*
* Bit: 31 30-13 12-5 4 3 2 1 0
* +-------+-----+------+--------+-------+--------+-------+---------+
* | cache | pfn | zero | global | valid | kernel | write | execute |
* +-------+-----+------+--------+-------+--------+-------+---------+
*/
/*
* Defines for accessing the bits. Also define some synonyms for use with
* the software-based defined bits below.
*/
#define _PAGE_EXECUTE (1 << 0) /* Execution bit. */
#define _PAGE_WE (1 << 1) /* Write bit. */
#define _PAGE_SILENT_WRITE (1 << 1) /* Same as above. */
#define _PAGE_KERNEL (1 << 2) /* Kernel mode page. */
#define _PAGE_VALID (1 << 3) /* Page is valid. */
#define _PAGE_SILENT_READ (1 << 3) /* Same as above. */
#define _PAGE_GLOBAL (1 << 4) /* Global page. */
#define _PAGE_NO_CACHE (1 << 31) /* part of the uncached memory map */
/*
* The hardware doesn't care about these bits, but the kernel uses them in
* software.
*/
#define _PAGE_PRESENT (1 << 5) /* Page is present in memory. */
#define _PAGE_FILE (1 << 6) /* 1=pagecache, 0=swap (when !present) */
#define _PAGE_ACCESSED (1 << 6) /* Simulated in software using valid bit. */
#define _PAGE_MODIFIED (1 << 7) /* Simulated in software using we bit. */
#define _PAGE_READ (1 << 8) /* Read enabled. */
#define _PAGE_WRITE (1 << 9) /* Write enabled. */
/* Define some higher level generic page attributes. */
#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
#define _PAGE_TABLE (_PAGE_PRESENT | __READABLE | __WRITEABLE)
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED)
#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED)
#define PAGE_SHARED __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_WRITE | \
_PAGE_ACCESSED)
#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_WRITE | \
_PAGE_ACCESSED | _PAGE_EXECUTE)
#define PAGE_READONLY __pgprot(_PAGE_PRESENT | __READABLE)
#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_EXECUTE | _PAGE_ACCESSED)
#define PAGE_COPY __pgprot(_PAGE_PRESENT | __READABLE)
#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | __READABLE | _PAGE_EXECUTE)
#define PAGE_KERNEL __pgprot(_PAGE_GLOBAL | _PAGE_KERNEL | \
_PAGE_PRESENT | __READABLE | __WRITEABLE)
#define PAGE_KERNEL_EXEC __pgprot(_PAGE_GLOBAL | _PAGE_KERNEL | _PAGE_EXECUTE | \
_PAGE_PRESENT | __READABLE | __WRITEABLE)
#define PAGE_SIGNAL_TRAMPOLINE __pgprot(_PAGE_GLOBAL | _PAGE_EXECUTE | \
_PAGE_PRESENT | __READABLE)
#define _KERNPG_TABLE (_PAGE_TABLE | _PAGE_KERNEL)
/* CRISv32 can do page protection for execute.
* Write permissions imply read permissions.
* Note that the numbers are in Execute-Write-Read order!
*/
#define __P000 PAGE_NONE
#define __P001 PAGE_READONLY
#define __P010 PAGE_COPY
#define __P011 PAGE_COPY
#define __P100 PAGE_READONLY_EXEC
#define __P101 PAGE_READONLY_EXEC
#define __P110 PAGE_COPY_EXEC
#define __P111 PAGE_COPY_EXEC
#define __S000 PAGE_NONE
#define __S001 PAGE_READONLY
#define __S010 PAGE_SHARED
#define __S011 PAGE_SHARED
#define __S100 PAGE_READONLY_EXEC
#define __S101 PAGE_READONLY_EXEC
#define __S110 PAGE_SHARED_EXEC
#define __S111 PAGE_SHARED_EXEC
#define PTE_FILE_MAX_BITS 25
#endif /* _ASM_CRIS_ARCH_MMU_H */
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