1. 根目录:
2. arch
3. nios2
4. kernel
5. asm-offsets.c

/*
 * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/kernel_stat.h>
#include <linux/ptrace.h>
#include <linux/hardirq.h>
#include <linux/thread_info.h>
#include <linux/kbuild.h>

int main(void)
{
	/* struct task_struct */
	OFFSET(TASK_THREAD, task_struct, thread);
	BLANK();

	/* struct thread_struct */
	OFFSET(THREAD_KSP, thread_struct, ksp);
	OFFSET(THREAD_KPSR, thread_struct, kpsr);
	BLANK();

	/* struct pt_regs */
	OFFSET(PT_ORIG_R2, pt_regs, orig_r2);
	OFFSET(PT_ORIG_R7, pt_regs, orig_r7);

	OFFSET(PT_R1, pt_regs, r1);
	OFFSET(PT_R2, pt_regs, r2);
	OFFSET(PT_R3, pt_regs, r3);
	OFFSET(PT_R4, pt_regs, r4);
	OFFSET(PT_R5, pt_regs, r5);
	OFFSET(PT_R6, pt_regs, r6);
	OFFSET(PT_R7, pt_regs, r7);
	OFFSET(PT_R8, pt_regs, r8);
	OFFSET(PT_R9, pt_regs, r9);
	OFFSET(PT_R10, pt_regs, r10);
	OFFSET(PT_R11, pt_regs, r11);
	OFFSET(PT_R12, pt_regs, r12);
	OFFSET(PT_R13, pt_regs, r13);
	OFFSET(PT_R14, pt_regs, r14);
	OFFSET(PT_R15, pt_regs, r15);
	OFFSET(PT_EA, pt_regs, ea);
	OFFSET(PT_RA, pt_regs, ra);
	OFFSET(PT_FP, pt_regs, fp);
	OFFSET(PT_SP, pt_regs, sp);
	OFFSET(PT_GP, pt_regs, gp);
	OFFSET(PT_ESTATUS, pt_regs, estatus);
	DEFINE(PT_REGS_SIZE, sizeof(struct pt_regs));
	BLANK();

	/* struct switch_stack */
	OFFSET(SW_R16, switch_stack, r16);
	OFFSET(SW_R17, switch_stack, r17);
	OFFSET(SW_R18, switch_stack, r18);
	OFFSET(SW_R19, switch_stack, r19);
	OFFSET(SW_R20, switch_stack, r20);
	OFFSET(SW_R21, switch_stack, r21);
	OFFSET(SW_R22, switch_stack, r22);
	OFFSET(SW_R23, switch_stack, r23);
	OFFSET(SW_FP, switch_stack, fp);
	OFFSET(SW_GP, switch_stack, gp);
	OFFSET(SW_RA, switch_stack, ra);
	DEFINE(SWITCH_STACK_SIZE, sizeof(struct switch_stack));
	BLANK();

	/* struct thread_info */
	OFFSET(TI_FLAGS, thread_info, flags);
	OFFSET(TI_PREEMPT_COUNT, thread_info, preempt_count);
	BLANK();

	return 0;
}