1 /*

     2  * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef _MESSAGE_

    26 #define _MESSAGE_

    27 

    28 // These are the commands sent from the server to the child processes

    29 // over the child processes' stdin pipes. A subset of the commands

    30 // understood by the overall system, these require responses from the

    31 // child process. Having a data structure rather than sending text

    32 // simplifies parsing on the child side. The child replies by sending

    33 // back fully-formatted replies which are copied by the server process

    34 // to the clients' sockets.

    35 

    36 struct PeekArg {

    37   DWORD address;

    38   DWORD numBytes;

    39 };

    40 

    41 // NOTE: when sending a PokeArg to the child process, we handle the

    42 // buffer specially

    43 struct PokeArg {

    44   DWORD address;

    45   DWORD numBytes;

    46   void* data;

    47 };

    48 

    49 // Used for continueevent

    50 struct BoolArg {

    51   bool val;

    52 };

    53 

    54 // Used for duphandle, closehandle, and getcontext

    55 struct HandleArg {

    56   HANDLE handle;

    57 };

    58 

    59 // Used for setcontext

    60 const int NUM_REGS_IN_CONTEXT = 22;

    61 struct SetContextArg {

    62   HANDLE handle;

    63   DWORD  Eax;

    64   DWORD  Ebx;

    65   DWORD  Ecx;

    66   DWORD  Edx;

    67   DWORD  Esi;

    68   DWORD  Edi;

    69   DWORD  Ebp;

    70   DWORD  Esp;

    71   DWORD  Eip;

    72   DWORD  Ds;

    73   DWORD  Es;

    74   DWORD  Fs;

    75   DWORD  Gs;

    76   DWORD  Cs;

    77   DWORD  Ss;

    78   DWORD  EFlags;

    79   DWORD  Dr0;

    80   DWORD  Dr1;

    81   DWORD  Dr2;

    82   DWORD  Dr3;

    83   DWORD  Dr6;

    84   DWORD  Dr7;

    85 };

    86 

    87 // Used for selectorentry

    88 struct SelectorEntryArg {

    89   HANDLE handle;

    90   DWORD  selector;

    91 };

    92 

    93 struct Message {

    94   typedef enum {

    95     ATTACH,

    96     DETACH,

    97     LIBINFO,

    98     PEEK,

    99     POKE,

   100     THREADLIST,

   101     DUPHANDLE,

   102     CLOSEHANDLE,

   103     GETCONTEXT,

   104     SETCONTEXT,

   105     SELECTORENTRY,

   106     SUSPEND,

   107     RESUME,

   108     POLLEVENT,

   109     CONTINUEEVENT

   110   } Type;

   111 

   112   Type type;

   113   union {

   114     PeekArg          peekArg;

   115     PokeArg          pokeArg;

   116     BoolArg          boolArg;

   117     HandleArg        handleArg;

   118     SetContextArg    setContextArg;

   119     SelectorEntryArg selectorArg;

   120   };

   121 };

   122 

   123 #endif  // #defined _MESSAGE_