120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
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/*
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* linux/arch/cris/kernel/ptrace.c
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*
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* Parts taken from the m68k port.
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*
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* Copyright (c) 2000, 2001, 2002 Axis Communications AB
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*
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* Authors: Bjorn Wesen
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*
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* $Log: ptrace.c,v $
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* Revision 1.9 2003/07/04 12:56:11 tobiasa
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* Moved arch-specific code to arch-specific files.
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*
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* Revision 1.8 2003/04/09 05:20:47 starvik
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* Merge of Linux 2.5.67
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*
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* Revision 1.7 2002/11/27 08:42:34 starvik
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* Argument to user_regs() is thread_info*
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*
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* Revision 1.6 2002/11/20 11:56:11 starvik
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* Merge of Linux 2.5.48
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*
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* Revision 1.5 2002/11/18 07:41:19 starvik
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* Removed warning
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*
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* Revision 1.4 2002/11/11 12:47:28 starvik
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* SYSCALL_TRACE has been moved to thread flags
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*
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* Revision 1.3 2002/02/05 15:37:18 bjornw
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* * Add do_notify_resume (replaces do_signal in the callchain)
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* * syscall_trace is now do_syscall_trace
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* * current->ptrace flag PT_TRACESYS -> PT_SYSCALLTRACE
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* * Keep track of the current->work.syscall_trace counter
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*
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* Revision 1.2 2001/12/18 13:35:20 bjornw
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* Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
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*
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* Revision 1.8 2001/11/12 18:26:21 pkj
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* Fixed compiler warnings.
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*
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* Revision 1.7 2001/09/26 11:53:49 bjornw
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* PTRACE_DETACH works more simple in 2.4.10
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*
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* Revision 1.6 2001/07/25 16:08:47 bjornw
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* PTRACE_ATTACH bulk moved into arch-independent code in 2.4.7
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*
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* Revision 1.5 2001/03/26 14:24:28 orjanf
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* * Changed loop condition.
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* * Added comment documenting non-standard ptrace behaviour.
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*
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* Revision 1.4 2001/03/20 19:44:41 bjornw
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* Use the user_regs macro instead of thread.esp0
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*
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* Revision 1.3 2000/12/18 23:45:25 bjornw
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* Linux/CRIS first version
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*
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*
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/smp.h>
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#include <linux/smp_lock.h>
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#include <linux/errno.h>
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#include <linux/ptrace.h>
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#include <linux/user.h>
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#include <asm/uaccess.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/processor.h>
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/*
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* Get contents of register REGNO in task TASK.
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*/
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inline long get_reg(struct task_struct *task, unsigned int regno)
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{
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/* USP is a special case, it's not in the pt_regs struct but
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* in the tasks thread struct
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*/
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if (regno == PT_USP)
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return task->thread.usp;
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else if (regno < PT_MAX)
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return ((unsigned long *)user_regs(task->thread_info))[regno];
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else
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return 0;
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}
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/*
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* Write contents of register REGNO in task TASK.
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*/
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inline int put_reg(struct task_struct *task, unsigned int regno,
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unsigned long data)
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{
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if (regno == PT_USP)
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task->thread.usp = data;
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else if (regno < PT_MAX)
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((unsigned long *)user_regs(task->thread_info))[regno] = data;
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else
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return -1;
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return 0;
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}
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/* notification of userspace execution resumption
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* - triggered by current->work.notify_resume
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*/
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extern int do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs);
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void do_notify_resume(int canrestart, sigset_t *oldset, struct pt_regs *regs,
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__u32 thread_info_flags )
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{
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/* deal with pending signal delivery */
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if (thread_info_flags & _TIF_SIGPENDING)
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do_signal(canrestart,oldset,regs);
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}
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