2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
6 #ifndef __UM_PROCESSOR_GENERIC_H
7 #define __UM_PROCESSOR_GENERIC_H
13 #include <asm/ptrace.h>
14 #include <registers.h>
15 #include <sysdep/archsetjmp.h>
17 #include <linux/prefetch.h>
21 struct thread_struct {
22 struct task_struct *saved_task;
24 int singlestep_syscall;
26 jmp_buf *fault_catcher;
27 struct task_struct *prev_sched;
28 unsigned long temp_stack;
30 struct arch_thread arch;
58 .arch = INIT_ARCH_THREAD, \
62 static inline void release_thread(struct task_struct *task)
66 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
68 extern unsigned long thread_saved_pc(struct task_struct *t);
70 static inline void mm_copy_segments(struct mm_struct *from_mm,
71 struct mm_struct *new_mm)
75 #define init_stack (init_thread_union.stack)
78 * User space process size: 3GB (default).
80 extern unsigned long task_size;
82 #define TASK_SIZE (task_size)
87 extern unsigned long stacksizelim;
89 #define STACK_ROOM (stacksizelim)
90 #define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
91 #define STACK_TOP_MAX STACK_TOP
93 /* This decides where the kernel will search for a free chunk of vm
94 * space during mmap's.
96 #define TASK_UNMAPPED_BASE (0x40000000)
98 extern void start_thread(struct pt_regs *regs, unsigned long entry,
102 unsigned long loops_per_jiffy;
106 extern struct cpuinfo_um boot_cpu_data;
108 #define my_cpu_data cpu_data[smp_processor_id()]
111 extern struct cpuinfo_um cpu_data[];
112 #define current_cpu_data cpu_data[smp_processor_id()]
114 #define cpu_data (&boot_cpu_data)
115 #define current_cpu_data boot_cpu_data
119 #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
120 extern unsigned long get_wchan(struct task_struct *p);