2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.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 "choose-mode.h"
15 #include "registers.h"
16 #include "sysdep/archsetjmp.h"
20 struct thread_struct {
21 /* This flag is set to 1 before calling do_fork (and analyzed in
22 * copy_thread) to mark that we are begin called from userspace (fork /
23 * vfork / clone), and reset to 0 after. It is left to 0 when called
24 * from kernelspace (i.e. kernel_thread() or fork_idle(), as of 2.6.11). */
25 struct task_struct *saved_task;
29 int singlestep_syscall;
32 struct task_struct *prev_sched;
33 unsigned long temp_stack;
35 struct arch_thread arch;
69 .arch = INIT_ARCH_THREAD, \
77 extern struct task_struct *alloc_task_struct(void);
79 extern void release_thread(struct task_struct *);
80 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
82 static inline void prepare_to_copy(struct task_struct *tsk)
87 extern unsigned long thread_saved_pc(struct task_struct *t);
89 static inline void mm_copy_segments(struct mm_struct *from_mm,
90 struct mm_struct *new_mm)
94 #define init_stack (init_thread_union.stack)
97 * User space process size: 3GB (default).
99 extern unsigned long task_size;
101 #define TASK_SIZE (task_size)
103 /* This decides where the kernel will search for a free chunk of vm
104 * space during mmap's.
106 #define TASK_UNMAPPED_BASE (0x40000000)
108 extern void start_thread(struct pt_regs *regs, unsigned long entry,
109 unsigned long stack);
112 unsigned long loops_per_jiffy;
116 extern struct cpuinfo_um boot_cpu_data;
118 #define my_cpu_data cpu_data[smp_processor_id()]
121 extern struct cpuinfo_um cpu_data[];
122 #define current_cpu_data cpu_data[smp_processor_id()]
124 #define cpu_data (&boot_cpu_data)
125 #define current_cpu_data boot_cpu_data
129 #define KSTK_REG(tsk, reg) \
130 get_thread_reg(reg, &tsk->thread.mode.skas.switch_buf)
131 #define get_wchan(p) (0)