Linux/Unix编程

开发平台：

Unix_Linux

getconstants.c：源码内容

							/*
 *  linux/arch/arm/tools/getconsdata.c
 *
 *  Copyright (C) 1995-2001 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
#define OFF_TSK(n) (unsigned long)&(((struct task_struct *)0)->n)
#define DEFN(name,off) asm("n#define "name" %0" :: "I" (off))
void func(void)
{
DEFN("TSK_SIGPENDING",		OFF_TSK(sigpending));
DEFN("TSK_ADDR_LIMIT",		OFF_TSK(addr_limit));
DEFN("TSK_NEED_RESCHED",	OFF_TSK(need_resched));
DEFN("TSK_PTRACE",		OFF_TSK(ptrace));
DEFN("TSK_USED_MATH",		OFF_TSK(used_math));
DEFN("TSS_SAVE",		OFF_TSK(thread.save));
DEFN("TSS_FPESAVE",		OFF_TSK(thread.fpstate.soft.save));
#ifdef CONFIG_CPU_32
DEFN("TSS_DOMAIN",		OFF_TSK(thread.domain));
DEFN("HPTE_TYPE_SMALL",		PTE_TYPE_SMALL);
DEFN("HPTE_AP_READ",		PTE_AP_READ);
DEFN("HPTE_AP_WRITE",		PTE_AP_WRITE);
DEFN("LPTE_PRESENT",		L_PTE_PRESENT);
DEFN("LPTE_YOUNG",		L_PTE_YOUNG);
DEFN("LPTE_BUFFERABLE",		L_PTE_BUFFERABLE);
DEFN("LPTE_CACHEABLE",		L_PTE_CACHEABLE);
DEFN("LPTE_USER",		L_PTE_USER);
DEFN("LPTE_WRITE",		L_PTE_WRITE);
DEFN("LPTE_EXEC",		L_PTE_EXEC);
DEFN("LPTE_DIRTY",		L_PTE_DIRTY);
#endif
#ifdef CONFIG_CPU_26
DEFN("PAGE_PRESENT",		_PAGE_PRESENT);
DEFN("PAGE_READONLY",		_PAGE_READONLY);
DEFN("PAGE_NOT_USER",		_PAGE_NOT_USER);
DEFN("PAGE_OLD",		_PAGE_OLD);
DEFN("PAGE_CLEAN",		_PAGE_CLEAN);
#endif
DEFN("PAGE_SZ",			PAGE_SIZE);
DEFN("SYS_ERROR0",		0x9f0000);
}

						