[mirror_ubuntu-bionic-kernel.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 pt_regs regs;
	struct pt_regs *segv_regs;
	int singlestep_syscall;
	void *fault_addr;
	jmp_buf *fault_catcher;
	struct task_struct *prev_sched;
	struct arch_thread arch;
	jmp_buf switch_buf;
	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, \
	.arch			= INIT_ARCH_THREAD, \
	.request		= { 0 } \
}

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

#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 cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data

#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 {
1da177e4	22	struct pt_regs regs;
f72c22e4	23	struct pt_regs *segv_regs;
1da177e4 LT	24	int singlestep_syscall;
1da177e4 LT	25	void *fault_addr;
fab95c55	26	jmp_buf *fault_catcher;
1da177e4	27	struct task_struct *prev_sched;
1da177e4	28	struct arch_thread arch;
77bf4400	29	jmp_buf switch_buf;
1da177e4 LT	30	struct {
	31	int op;
	32	union {
	33	struct {
	34	int pid;
	35	} fork, exec;
	36	struct {
	37	int (proc)(void );
	38	void *arg;
	39	} thread;
	40	struct {
	41	void (proc)(void );
	42	void *arg;
	43	} cb;
	44	} u;
	45	} request;
	46	};
	47
	48	#define INIT_THREAD \
	49	{ \
ba180fd4	50	.regs = EMPTY_REGS, \
1da177e4 LT	51	.fault_addr = NULL, \
1da177e4 LT	52	.prev_sched = NULL, \
1da177e4 LT	53	.arch = INIT_ARCH_THREAD, \
	54	.request = { 0 } \
	55	}
	56
77bf4400 JD	57	static inline void release_thread(struct task_struct *task)
	58	{
	59	}
	60
1da177e4 LT	61	#define init_stack (init_thread_union.stack)
	62
	63	/*
	64	* User space process size: 3GB (default).
	65	*/
536788fe JD	66	extern unsigned long task_size;
	67
	68	#define TASK_SIZE (task_size)
1da177e4	69
922a70d3 DH	70	#undef STACK_TOP
	71	#undef STACK_TOP_MAX
	72
	73	extern unsigned long stacksizelim;
	74
	75	#define STACK_ROOM (stacksizelim)
	76	#define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
	77	#define STACK_TOP_MAX STACK_TOP
	78
1da177e4 LT	79	/* This decides where the kernel will search for a free chunk of vm
	80	* space during mmap's.
	81	*/
	82	#define TASK_UNMAPPED_BASE (0x40000000)
	83
	84	extern void start_thread(struct pt_regs *regs, unsigned long entry,
	85	unsigned long stack);
	86
	87	struct cpuinfo_um {
	88	unsigned long loops_per_jiffy;
	89	int ipi_pipe[2];
	90	};
	91
	92	extern struct cpuinfo_um boot_cpu_data;
	93
1da177e4 LT	94	#define cpu_data (&boot_cpu_data)
1da177e4 LT	95	#define current_cpu_data boot_cpu_data
1da177e4	96
77bf4400	97	#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
c1127465	98	extern unsigned long get_wchan(struct task_struct *p);
1da177e4	99
fad1c45c	100	#endif