[deliverable/linux.git] / arch / um / include / asm / processor-generic.h

/* 
 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#ifndef __UM_PROCESSOR_GENERIC_H
#define __UM_PROCESSOR_GENERIC_H

struct pt_regs;

struct task_struct;

#include <asm/ptrace.h>
#include <registers.h>
#include <sysdep/archsetjmp.h>

#include <linux/prefetch.h>

struct mm_struct;

struct thread_struct {
	struct task_struct *saved_task;
	struct pt_regs regs;
	int singlestep_syscall;
	void *fault_addr;
	jmp_buf *fault_catcher;
	struct task_struct *prev_sched;
	unsigned long temp_stack;
	jmp_buf *exec_buf;
	struct arch_thread arch;
	jmp_buf switch_buf;
	int mm_count;
	struct {
		int op;
		union {
			struct {
				int pid;
			} fork, exec;
			struct {
				int (*proc)(void *);
				void *arg;
			} thread;
			struct {
				void (*proc)(void *);
				void *arg;
			} cb;
		} u;
	} request;
};

#define INIT_THREAD \
{ \
	.regs		   	= EMPTY_REGS,	\
	.fault_addr		= NULL, \
	.prev_sched		= NULL, \
	.temp_stack		= 0, \
	.exec_buf		= NULL, \
	.arch			= INIT_ARCH_THREAD, \
	.request		= { 0 } \
}

static inline void release_thread(struct task_struct *task)
{
}

extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);

extern unsigned long thread_saved_pc(struct task_struct *t);

static inline void mm_copy_segments(struct mm_struct *from_mm,
				    struct mm_struct *new_mm)
{
}

#define init_stack	(init_thread_union.stack)

/*
 * User space process size: 3GB (default).
 */
extern unsigned long task_size;

#define TASK_SIZE (task_size)

#undef STACK_TOP
#undef STACK_TOP_MAX

extern unsigned long stacksizelim;

#define STACK_ROOM	(stacksizelim)
#define STACK_TOP	(TASK_SIZE - 2 * PAGE_SIZE)
#define STACK_TOP_MAX	STACK_TOP

/* This decides where the kernel will search for a free chunk of vm
 * space during mmap's.
 */
#define TASK_UNMAPPED_BASE	(0x40000000)

extern void start_thread(struct pt_regs *regs, unsigned long entry, 
			 unsigned long stack);

struct cpuinfo_um {
	unsigned long loops_per_jiffy;
	int ipi_pipe[2];
};

extern struct cpuinfo_um boot_cpu_data;

#define my_cpu_data		cpu_data[smp_processor_id()]

#ifdef CONFIG_SMP
extern struct cpuinfo_um cpu_data[];
#define current_cpu_data cpu_data[smp_processor_id()]
#else
#define cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data
#endif


#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
extern unsigned long get_wchan(struct task_struct *p);

#endif
Commit	Line	Data
1da177e4	1	/*
ba180fd4	2	* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
1da177e4 LT	3	* Licensed under the GPL
	4	*/
	5
	6	#ifndef __UM_PROCESSOR_GENERIC_H
	7	#define __UM_PROCESSOR_GENERIC_H
	8
	9	struct pt_regs;
	10
	11	struct task_struct;
	12
37185b33 AV	13	#include <asm/ptrace.h>
	14	#include <registers.h>
	15	#include <sysdep/archsetjmp.h>
1da177e4	16
607647ab RW	17	#include <linux/prefetch.h>
607647ab RW	18
1da177e4 LT	19	struct mm_struct;
	20
	21	struct thread_struct {
ba180fd4	22	struct task_struct *saved_task;
1da177e4	23	struct pt_regs regs;
1da177e4 LT	24	int singlestep_syscall;
1da177e4 LT	25	void *fault_addr;
fab95c55	26	jmp_buf *fault_catcher;
1da177e4 LT	27	struct task_struct *prev_sched;
1da177e4 LT	28	unsigned long temp_stack;
fab95c55	29	jmp_buf *exec_buf;
1da177e4	30	struct arch_thread arch;
77bf4400 JD	31	jmp_buf switch_buf;
77bf4400 JD	32	int mm_count;
1da177e4 LT	33	struct {
	34	int op;
	35	union {
	36	struct {
	37	int pid;
	38	} fork, exec;
	39	struct {
	40	int (proc)(void );
	41	void *arg;
	42	} thread;
	43	struct {
	44	void (proc)(void );
	45	void *arg;
	46	} cb;
	47	} u;
	48	} request;
	49	};
	50
	51	#define INIT_THREAD \
	52	{ \
ba180fd4	53	.regs = EMPTY_REGS, \
1da177e4 LT	54	.fault_addr = NULL, \
	55	.prev_sched = NULL, \
	56	.temp_stack = 0, \
	57	.exec_buf = NULL, \
	58	.arch = INIT_ARCH_THREAD, \
	59	.request = { 0 } \
	60	}
	61
77bf4400 JD	62	static inline void release_thread(struct task_struct *task)
	63	{
	64	}
	65
1da177e4	66	extern int kernel_thread(int (fn)(void ), void * arg, unsigned long flags);
c16993d9	67
1da177e4 LT	68	extern unsigned long thread_saved_pc(struct task_struct *t);
	69
	70	static inline void mm_copy_segments(struct mm_struct *from_mm,
	71	struct mm_struct *new_mm)
	72	{
	73	}
	74
	75	#define init_stack (init_thread_union.stack)
	76
	77	/*
	78	* User space process size: 3GB (default).
	79	*/
536788fe JD	80	extern unsigned long task_size;
	81
	82	#define TASK_SIZE (task_size)
1da177e4	83
922a70d3 DH	84	#undef STACK_TOP
	85	#undef STACK_TOP_MAX
	86
	87	extern unsigned long stacksizelim;
	88
	89	#define STACK_ROOM (stacksizelim)
	90	#define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
	91	#define STACK_TOP_MAX STACK_TOP
	92
1da177e4 LT	93	/* This decides where the kernel will search for a free chunk of vm
	94	* space during mmap's.
	95	*/
	96	#define TASK_UNMAPPED_BASE (0x40000000)
	97
	98	extern void start_thread(struct pt_regs *regs, unsigned long entry,
	99	unsigned long stack);
	100
	101	struct cpuinfo_um {
	102	unsigned long loops_per_jiffy;
	103	int ipi_pipe[2];
	104	};
	105
	106	extern struct cpuinfo_um boot_cpu_data;
	107
	108	#define my_cpu_data cpu_data[smp_processor_id()]
	109
	110	#ifdef CONFIG_SMP
	111	extern struct cpuinfo_um cpu_data[];
	112	#define current_cpu_data cpu_data[smp_processor_id()]
	113	#else
	114	#define cpu_data (&boot_cpu_data)
	115	#define current_cpu_data boot_cpu_data
	116	#endif
	117
1da177e4	118
77bf4400	119	#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
c1127465	120	extern unsigned long get_wchan(struct task_struct *p);
1da177e4	121
fad1c45c	122	#endif