arch/arc/tools/offset.c

/*
 * offset.c: Calculate task_struct offsets.
 *
 * Copyright (C) 1996 David S. Miller
 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Ralf Baechle
 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
 *
 * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
 * Copyright (C) 2000 MIPS Technologies, Inc.
 * 
 * Amir Bhor : Modified for ARC defines
 */
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>

#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <asm/hardirq.h>

#define text(t) __asm__("\n@@@" t)
#define _offset(type, member) (&(((type *)NULL)->member))

#define offset(string, ptr, member) \
	__asm__("\n@@@" string "%0" : : "i" (_offset(ptr, member)))
#define constant(string, member) \
	__asm__("\n@@@" string "%x0" : : "i" (member))
#define size(string, size) \
	__asm__("\n@@@" string "%0" : : "i" (sizeof(size)))
#define linefeed text("")

text("/* DO NOT TOUCH, AUTOGENERATED BY OFFSET.C */");
linefeed;
text("#ifndef _ASM_ARC_OFFSET_H");
text("#define _ASM_ARC_OFFSET_H");
linefeed;

void output_task_defines(void)
{
	text("/* ARC task_struct offsets. */");
	offset("#define TASK_STATE         ", struct task_struct, state);
	offset("#define TASK_FLAGS         ", struct task_struct, flags);
	offset("#define TASK_SIGPENDING    ", struct task_struct, sigpending);
	offset("#define TASK_NEED_RESCHED  ", struct task_struct, need_resched);
	offset("#define TASK_PTRACE        ", struct task_struct, ptrace);
	offset("#define TASK_THREAD        ", struct task_struct, thread);
	offset("#define TASK_COUNTER       ", struct task_struct, counter);
	offset("#define TASK_NICE          ", struct task_struct, nice);
	offset("#define TASK_MM            ", struct task_struct, mm);
	offset("#define TASK_PROCESSOR     ", struct task_struct, processor);
	offset("#define TASK_PID           ", struct task_struct, pid);
	size(  "#define TASK_STRUCT_SIZE   ", struct task_struct);

	text("/* ARC cpuinfo struct offset. */");
	offset("#define CPUINFO_PROCID ", struct cpuinfo_arc, processor_id);
	offset("#define CPUINFO_PROCVER ", struct cpuinfo_arc, processor_version);
	
	linefeed;
}

void output_thread_defines(void)
{
	text("/* ARC specific thread_struct offsets. */");
	offset("#define THREAD_KSP	", struct thread_struct, ksp); 
	offset("#define THREAD_USP	", struct thread_struct, usp); 
	offset("#define THREAD_PC	", struct thread_struct, pc); 
	linefeed;
}

void output_cpustat_define(void) 
{
	text("/* ARC irq_cpustat_t offsets. */");
	offset("#define CPUSTAT_LOCAL_IRQ_COUNT	", irq_cpustat_t, \
							__local_irq_count); 
	offset("#define CPUSTAT_SOFTIRQ_PENDING	", irq_cpustat_t, \
							__softirq_pending); 
	linefeed;	
}
text("#endif /* !(_ASM_ARC_OFFSET_H) */");