28fa468f53
At times where UML used the TT mode to operate it had kind of SMP support. It never got finished nor was stable. Let's rip out that cruft and stop confusing developers which do tree-wide SMP cleanups. If someone wants SMP support UML it has do be done from scratch. Signed-off-by: Richard Weinberger <richard@nod.at>
108 lines
2 KiB
C
108 lines
2 KiB
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_PROCESSOR_GENERIC_H
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#define __UM_PROCESSOR_GENERIC_H
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struct pt_regs;
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struct task_struct;
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#include <asm/ptrace.h>
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#include <registers.h>
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#include <sysdep/archsetjmp.h>
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#include <linux/prefetch.h>
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struct mm_struct;
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struct thread_struct {
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struct pt_regs regs;
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struct pt_regs *segv_regs;
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int singlestep_syscall;
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void *fault_addr;
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jmp_buf *fault_catcher;
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struct task_struct *prev_sched;
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struct arch_thread arch;
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jmp_buf switch_buf;
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struct {
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int op;
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union {
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struct {
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int pid;
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} fork, exec;
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struct {
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int (*proc)(void *);
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void *arg;
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} thread;
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struct {
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void (*proc)(void *);
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void *arg;
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} cb;
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} u;
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} request;
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};
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#define INIT_THREAD \
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{ \
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.regs = EMPTY_REGS, \
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.fault_addr = NULL, \
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.prev_sched = NULL, \
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.arch = INIT_ARCH_THREAD, \
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.request = { 0 } \
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}
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static inline void release_thread(struct task_struct *task)
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{
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}
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extern unsigned long thread_saved_pc(struct task_struct *t);
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static inline void mm_copy_segments(struct mm_struct *from_mm,
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struct mm_struct *new_mm)
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{
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}
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#define init_stack (init_thread_union.stack)
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/*
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* User space process size: 3GB (default).
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*/
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extern unsigned long task_size;
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#define TASK_SIZE (task_size)
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#undef STACK_TOP
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#undef STACK_TOP_MAX
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extern unsigned long stacksizelim;
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#define STACK_ROOM (stacksizelim)
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#define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE)
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#define STACK_TOP_MAX STACK_TOP
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/* This decides where the kernel will search for a free chunk of vm
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* space during mmap's.
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*/
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#define TASK_UNMAPPED_BASE (0x40000000)
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extern void start_thread(struct pt_regs *regs, unsigned long entry,
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unsigned long stack);
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struct cpuinfo_um {
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unsigned long loops_per_jiffy;
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int ipi_pipe[2];
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};
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extern struct cpuinfo_um boot_cpu_data;
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#define cpu_data (&boot_cpu_data)
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#define current_cpu_data boot_cpu_data
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#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
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extern unsigned long get_wchan(struct task_struct *p);
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#endif
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