| /* |
| * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __UM_PROCESSOR_GENERIC_H |
| #define __UM_PROCESSOR_GENERIC_H |
| |
| struct pt_regs; |
| |
| struct task_struct; |
| |
| #include "linux/config.h" |
| #include "linux/signal.h" |
| #include "asm/segment.h" |
| #include "asm/ptrace.h" |
| |
| struct mm_struct; |
| |
| #define current_text_addr() ((void *) 0) |
| |
| #define cpu_relax() do ; while (0) |
| |
| #define SIGNAL_NONE 0 |
| #define SIGNAL_PENDING 1 |
| |
| struct thread_struct { |
| int extern_pid; |
| int tracing; |
| int forking; |
| unsigned long kernel_stack; |
| struct { |
| int state; |
| int signal; |
| unsigned long handler; |
| } signal; |
| struct signal_context *signal_context; |
| int nsyscalls; |
| struct sys_pt_regs process_regs; |
| struct sys_pt_regs syscall_regs; |
| struct sys_pt_regs altstack_regs; |
| unsigned long cr2; |
| int err; |
| int repeat_syscall; |
| void *fault_addr; |
| void *fault_catcher; |
| int vm_seq; |
| struct { |
| int op; |
| union { |
| struct { |
| int pid; |
| } fork, exec; |
| struct { |
| struct task_struct *to; |
| struct task_struct *from; |
| } cswitch; |
| struct { |
| int (*proc)(void *); |
| void *arg; |
| int flags; |
| int new_pid; |
| struct task_struct *new_task; |
| int cpu; |
| } thread; |
| struct { |
| unsigned long stack; |
| struct sys_pt_regs regs; |
| struct task_struct *from; |
| } fork_finish; |
| struct { |
| void (*proc)(void *); |
| void *arg; |
| } cb; |
| struct { |
| int restore_regs; |
| } tracing; |
| } u; |
| } request; |
| }; |
| |
| #define INIT_THREAD \ |
| { \ |
| extern_pid: -1, \ |
| tracing: 0, \ |
| forking: 0, \ |
| kernel_stack: 0, \ |
| signal: { \ |
| state: SIGNAL_NONE, \ |
| signal: 0, \ |
| handler:0 \ |
| }, \ |
| nsyscalls: 0, \ |
| process_regs: EMPTY_REGS, \ |
| syscall_regs: EMPTY_REGS, \ |
| altstack_regs: EMPTY_REGS, \ |
| cr2: 0, \ |
| err: 0, \ |
| repeat_syscall: 0, \ |
| fault_addr: NULL, \ |
| vm_seq: 0, \ |
| request: { 0 } \ |
| } |
| |
| #define THREAD_SIZE (2*PAGE_SIZE) |
| |
| typedef struct { |
| unsigned long seg; |
| } mm_segment_t; |
| |
| extern struct task_struct *alloc_task_struct(void); |
| extern void free_task_struct(struct task_struct *task); |
| |
| #define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count) |
| |
| extern void release_thread(struct task_struct *); |
| extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); |
| |
| static inline void release_segments(struct mm_struct *mm) |
| { |
| } |
| |
| static inline void copy_segments(struct task_struct *p, |
| struct mm_struct *new_mm) |
| { |
| } |
| |
| #define forget_segments() do ; while(0) |
| |
| extern unsigned long thread_saved_pc(struct thread_struct *t); |
| |
| /* |
| extern unsigned long init_task_ptr; |
| |
| #define init_task_u (*((union task_union *) init_task_ptr)) |
| */ |
| #define init_task (init_task_union.task) |
| #define init_stack (init_task_union.stack) |
| |
| /* |
| * User space process size: 3GB (default). |
| */ |
| extern unsigned long task_size; |
| |
| #define TASK_SIZE (task_size) |
| |
| /* 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); |
| |
| #ifndef ARCH_CPUINFO |
| struct cpuinfo_um { |
| unsigned long loops_per_sec; |
| unsigned long *pgd_quick; |
| unsigned long *pmd_quick; |
| unsigned long *pte_quick; |
| unsigned long pgtable_cache_sz; |
| }; |
| #endif |
| |
| extern struct cpuinfo_um boot_cpu_data; |
| |
| #define my_cpu_data cpu_data[smp_processor_id()] |
| |
| #ifdef CONFIG_SMP |
| extern struct cpuinfo_um cpu_data[]; |
| #define current_cpu_data cpu_data[smp_processor_id()] |
| #else |
| #define cpu_data (&boot_cpu_data) |
| #define current_cpu_data boot_cpu_data |
| #endif |
| |
| #define KSTK_EIP(tsk) (0) |
| #define KSTK_ESP(tsk) (0) |
| #define get_wchan(p) (0) |
| |
| #endif |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-file-style: "linux" |
| * End: |
| */ |