getconsdata.c

Linux内核源代码 为压缩文件 是<<Linux内核>>一书中的源代码

/*
 *  linux/arch/arm/lib/getconsdata.c
 *
 *  Copyright (C) 1995-2000 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/mm.h>

#include <asm/pgtable.h>
#include <asm/uaccess.h>

/*
 * Make sure that the compiler and target are compatible
 */
#if (defined(__APCS_32__) && defined(CONFIG_CPU_26))
#error Your compiler targets APCS-32 but this kernel requires APCS-26.
#endif
#if (defined(__APCS_26__) && defined(CONFIG_CPU_32))
#error Your compiler targets APCS-26 but this kernel requires APCS-32.
#endif

#undef PAGE_READONLY

#define OFF_TSK(n) (unsigned long)&(((struct task_struct *)0)->n)
#define OFF_MM(n) (unsigned long)&(((struct mm_struct *)0)->n)

unsigned long TSK_SIGPENDING = OFF_TSK(sigpending);
unsigned long TSK_ADDR_LIMIT = OFF_TSK(addr_limit);
unsigned long TSK_NEED_RESCHED = OFF_TSK(need_resched);
unsigned long TSK_PTRACE = OFF_TSK(ptrace);
unsigned long TSK_USED_MATH = OFF_TSK(used_math);

unsigned long TSS_SAVE = OFF_TSK(thread.save);
unsigned long TSS_FPESAVE = OFF_TSK(thread.fpstate.soft.save);
#ifdef CONFIG_CPU_32
unsigned long TSS_DOMAIN = OFF_TSK(thread.domain);
#endif

#ifdef _PAGE_PRESENT
unsigned long PAGE_PRESENT = _PAGE_PRESENT;
#endif
#ifdef _PAGE_RW
unsigned long PAGE_RW = _PAGE_RW;
#endif
#ifdef _PAGE_USER
unsigned long PAGE_USER = _PAGE_USER;
#endif
#ifdef _PAGE_ACCESSED
unsigned long PAGE_ACCESSED = _PAGE_ACCESSED;
#endif
#ifdef _PAGE_DIRTY
unsigned long PAGE_DIRTY = _PAGE_DIRTY;
#endif
#ifdef _PAGE_READONLY
unsigned long PAGE_READONLY = _PAGE_READONLY;
#endif
#ifdef _PAGE_NOT_USER
unsigned long PAGE_NOT_USER = _PAGE_NOT_USER;
#endif
#ifdef _PAGE_OLD
unsigned long PAGE_OLD = _PAGE_OLD;
#endif
#ifdef _PAGE_CLEAN
unsigned long PAGE_CLEAN = _PAGE_CLEAN;
#endif

#ifdef PTE_TYPE_SMALL
unsigned long HPTE_TYPE_SMALL = PTE_TYPE_SMALL;
unsigned long HPTE_AP_READ    = PTE_AP_READ;
unsigned long HPTE_AP_WRITE   = PTE_AP_WRITE;
#endif

#ifdef L_PTE_PRESENT
unsigned long LPTE_PRESENT    = L_PTE_PRESENT;
unsigned long LPTE_YOUNG      = L_PTE_YOUNG;
unsigned long LPTE_BUFFERABLE = L_PTE_BUFFERABLE;
unsigned long LPTE_CACHEABLE  = L_PTE_CACHEABLE;
unsigned long LPTE_USER       = L_PTE_USER;
unsigned long LPTE_WRITE      = L_PTE_WRITE;
unsigned long LPTE_EXEC       = L_PTE_EXEC;
unsigned long LPTE_DIRTY      = L_PTE_DIRTY;
#endif

unsigned long PAGE_SZ = PAGE_SIZE;

unsigned long KSWI_BASE = 0x900000;
unsigned long KSWI_SYS_BASE = 0x9f0000;
unsigned long SYS_ERROR0 = 0x9f0000;
unsigned long PGOFF_SHIFT = PAGE_SHIFT - 12;
unsigned long PGOFF_MASK = (1 << (PAGE_SHIFT - 12)) - 1;