The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/ptrace.h

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    1 /*-
    2  * Copyright (c) 1984, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)ptrace.h    8.2 (Berkeley) 1/4/94
   30  * $FreeBSD: releng/6.3/sys/sys/ptrace.h 173886 2007-11-24 19:45:58Z cvs2svn $
   31  */
   32 
   33 #ifndef _SYS_PTRACE_H_
   34 #define _SYS_PTRACE_H_
   35 
   36 #include <sys/_sigset.h>
   37 
   38 #define PT_TRACE_ME     0       /* child declares it's being traced */
   39 #define PT_READ_I       1       /* read word in child's I space */
   40 #define PT_READ_D       2       /* read word in child's D space */
   41 /* was  PT_READ_U       3        * read word in child's user structure */
   42 #define PT_WRITE_I      4       /* write word in child's I space */
   43 #define PT_WRITE_D      5       /* write word in child's D space */
   44 /* was  PT_WRITE_U      6        * write word in child's user structure */
   45 #define PT_CONTINUE     7       /* continue the child */
   46 #define PT_KILL         8       /* kill the child process */
   47 #define PT_STEP         9       /* single step the child */
   48 
   49 #define PT_ATTACH       10      /* trace some running process */
   50 #define PT_DETACH       11      /* stop tracing a process */
   51 #define PT_IO           12      /* do I/O to/from stopped process. */
   52 #define PT_LWPINFO      13      /* Info about the LWP that stopped. */
   53 #define PT_GETNUMLWPS   14      /* get total number of threads */
   54 #define PT_GETLWPLIST   15      /* get thread list */
   55 #define PT_CLEARSTEP    16      /* turn off single step */
   56 #define PT_SETSTEP      17      /* turn on single step */
   57 #define PT_SUSPEND      18      /* suspend a thread */
   58 #define PT_RESUME       19      /* resume a thread */
   59 
   60 #define PT_TO_SCE       20
   61 #define PT_TO_SCX       21
   62 #define PT_SYSCALL      22
   63 
   64 #define PT_GETREGS      33      /* get general-purpose registers */
   65 #define PT_SETREGS      34      /* set general-purpose registers */
   66 #define PT_GETFPREGS    35      /* get floating-point registers */
   67 #define PT_SETFPREGS    36      /* set floating-point registers */
   68 #define PT_GETDBREGS    37      /* get debugging registers */
   69 #define PT_SETDBREGS    38      /* set debugging registers */
   70 #define PT_FIRSTMACH    64      /* for machine-specific requests */
   71 #include <machine/ptrace.h>     /* machine-specific requests, if any */
   72 
   73 struct ptrace_io_desc {
   74         int     piod_op;        /* I/O operation */
   75         void    *piod_offs;     /* child offset */
   76         void    *piod_addr;     /* parent offset */
   77         size_t  piod_len;       /* request length */
   78 };
   79 
   80 /*
   81  * Operations in piod_op.
   82  */
   83 #define PIOD_READ_D     1       /* Read from D space */
   84 #define PIOD_WRITE_D    2       /* Write to D space */
   85 #define PIOD_READ_I     3       /* Read from I space */
   86 #define PIOD_WRITE_I    4       /* Write to I space */
   87 
   88 /* Argument structure for PT_LWPINFO. */
   89 struct ptrace_lwpinfo {
   90         lwpid_t pl_lwpid;       /* LWP described. */
   91         int     pl_event;       /* Event that stopped the LWP. */
   92 #define PL_EVENT_NONE   0
   93 #define PL_EVENT_SIGNAL 1
   94         int     pl_flags;       /* LWP flags. */
   95 #define PL_FLAG_SA      0x01    /* M:N thread */
   96 #define PL_FLAG_BOUND   0x02    /* M:N bound thread */
   97         sigset_t        pl_sigmask;     /* LWP signal mask */
   98         sigset_t        pl_siglist;     /* LWP pending signal */
   99 };
  100 
  101 #ifdef _KERNEL
  102 
  103 #define PTRACESTOP_SC(p, td, flag)                              \
  104         if ((p)->p_flag & P_TRACED && (p)->p_stops & (flag)) {  \
  105                 PROC_LOCK(p);                                   \
  106                 ptracestop((td), SIGTRAP);                      \
  107                 PROC_UNLOCK(p);                                 \
  108         }
  109 /*
  110  * The flags below are used for ptrace(2) tracing and have no relation
  111  * to procfs.  They are stored in struct proc's p_stops member.
  112  */
  113 #define S_PT_SCE        0x000010000
  114 #define S_PT_SCX        0x000020000
  115 
  116 int     ptrace_set_pc(struct thread *_td, unsigned long _addr);
  117 int     ptrace_single_step(struct thread *_td);
  118 int     ptrace_clear_single_step(struct thread *_td);
  119 
  120 #ifdef __HAVE_PTRACE_MACHDEP
  121 int     cpu_ptrace(struct thread *_td, int _req, void *_addr, int _data);
  122 #endif
  123 
  124 /*
  125  * These are prototypes for functions that implement some of the
  126  * debugging functionality exported by procfs / linprocfs and by the
  127  * ptrace(2) syscall.  They used to be part of procfs, but they don't
  128  * really belong there.
  129  */
  130 struct reg;
  131 struct fpreg;
  132 struct dbreg;
  133 struct uio;
  134 int     proc_read_regs(struct thread *_td, struct reg *_reg);
  135 int     proc_write_regs(struct thread *_td, struct reg *_reg);
  136 int     proc_read_fpregs(struct thread *_td, struct fpreg *_fpreg);
  137 int     proc_write_fpregs(struct thread *_td, struct fpreg *_fpreg);
  138 int     proc_read_dbregs(struct thread *_td, struct dbreg *_dbreg);
  139 int     proc_write_dbregs(struct thread *_td, struct dbreg *_dbreg);
  140 int     proc_sstep(struct thread *_td);
  141 int     proc_rwmem(struct proc *_p, struct uio *_uio);
  142 #ifdef COMPAT_IA32
  143 struct reg32;
  144 struct fpreg32;
  145 struct dbreg32;
  146 int     proc_read_regs32(struct thread *_td, struct reg32 *_reg32);
  147 int     proc_write_regs32(struct thread *_td, struct reg32 *_reg32);
  148 int     proc_read_fpregs32(struct thread *_td, struct fpreg32 *_fpreg32);
  149 int     proc_write_fpregs32(struct thread *_td, struct fpreg32 *_fpreg32);
  150 int     proc_read_dbregs32(struct thread *_td, struct dbreg32 *_dbreg32);
  151 int     proc_write_dbregs32(struct thread *_td, struct dbreg32 *_dbreg32);
  152 #endif
  153 #else /* !_KERNEL */
  154 
  155 #include <sys/cdefs.h>
  156 
  157 __BEGIN_DECLS
  158 int     ptrace(int _request, pid_t _pid, caddr_t _addr, int _data);
  159 __END_DECLS
  160 
  161 #endif /* !_KERNEL */
  162 
  163 #endif  /* !_SYS_PTRACE_H_ */

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