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 "registers.h"
15 #include "sysdep/archsetjmp.h"
19 struct thread_struct {
20 /* This flag is set to 1 before calling do_fork (and analyzed in
21 * copy_thread) to mark that we are begin called from userspace (fork /
22 * vfork / clone), and reset to 0 after. It is left to 0 when called
23 * from kernelspace (i.e. kernel_thread() or fork_idle(), as of 2.6.11). */
24 struct task_struct *saved_task;
28 int singlestep_syscall;
31 struct task_struct *prev_sched;
32 unsigned long temp_stack;
34 struct arch_thread arch;
68 .arch = INIT_ARCH_THREAD, \
76 extern struct task_struct *alloc_task_struct(void);
78 extern void release_thread(struct task_struct *);
79 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
81 static inline void prepare_to_copy(struct task_struct *tsk)
86 extern unsigned long thread_saved_pc(struct task_struct *t);
88 static inline void mm_copy_segments(struct mm_struct *from_mm,
89 struct mm_struct *new_mm)
93 #define init_stack (init_thread_union.stack)
96 * User space process size: 3GB (default).
98 extern unsigned long task_size;
100 #define TASK_SIZE (task_size)
102 /* This decides where the kernel will search for a free chunk of vm
103 * space during mmap's.
105 #define TASK_UNMAPPED_BASE (0x40000000)
107 extern void start_thread(struct pt_regs *regs, unsigned long entry,
108 unsigned long stack);
111 unsigned long loops_per_jiffy;
115 extern struct cpuinfo_um boot_cpu_data;
117 #define my_cpu_data cpu_data[smp_processor_id()]
120 extern struct cpuinfo_um cpu_data[];
121 #define current_cpu_data cpu_data[smp_processor_id()]
123 #define cpu_data (&boot_cpu_data)
124 #define current_cpu_data boot_cpu_data
128 #define KSTK_REG(tsk, reg) \
129 get_thread_reg(reg, &tsk->thread.mode.skas.switch_buf)
130 #define get_wchan(p) (0)