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 "asm/pgtable.h"
15 #include "registers.h"
16 #include "sysdep/archsetjmp.h"
20 struct thread_struct
{
21 struct task_struct
*saved_task
;
23 * This flag is set to 1 before calling do_fork (and analyzed in
24 * copy_thread) to mark that we are begin called from userspace (fork /
25 * vfork / clone), and reset to 0 after. It is left to 0 when called
26 * from kernelspace (i.e. kernel_thread() or fork_idle(),
32 int singlestep_syscall
;
34 jmp_buf *fault_catcher
;
35 struct task_struct
*prev_sched
;
36 unsigned long temp_stack
;
38 struct arch_thread arch
;
68 .arch = INIT_ARCH_THREAD, \
72 extern struct task_struct
*alloc_task_struct(void);
74 static inline void release_thread(struct task_struct
*task
)
78 extern int kernel_thread(int (*fn
)(void *), void * arg
, unsigned long flags
);
80 static inline void prepare_to_copy(struct task_struct
*tsk
)
85 extern unsigned long thread_saved_pc(struct task_struct
*t
);
87 static inline void mm_copy_segments(struct mm_struct
*from_mm
,
88 struct mm_struct
*new_mm
)
92 #define init_stack (init_thread_union.stack)
95 * User space process size: 3GB (default).
97 #define TASK_SIZE (CONFIG_TOP_ADDR & PGDIR_MASK)
99 /* This decides where the kernel will search for a free chunk of vm
100 * space during mmap's.
102 #define TASK_UNMAPPED_BASE (0x40000000)
104 extern void start_thread(struct pt_regs
*regs
, unsigned long entry
,
105 unsigned long stack
);
108 unsigned long loops_per_jiffy
;
112 extern struct cpuinfo_um boot_cpu_data
;
114 #define my_cpu_data cpu_data[smp_processor_id()]
117 extern struct cpuinfo_um cpu_data
[];
118 #define current_cpu_data cpu_data[smp_processor_id()]
120 #define cpu_data (&boot_cpu_data)
121 #define current_cpu_data boot_cpu_data
125 #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
126 extern unsigned long get_wchan(struct task_struct
*p
);