gdb/gdb_proc_service.h

   1 /* <proc_service.h> replacement for systems that don't have it.
   2    Copyright (C) 2000-2016 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef GDB_PROC_SERVICE_H
  20 #define GDB_PROC_SERVICE_H
  21
  22 #include <sys/types.h>
  23
  24 #ifdef HAVE_PROC_SERVICE_H
  25
  26 /* glibc's proc_service.h doesn't wrap itself with extern "C".  Need
  27    to do it ourselves.  */
  28 EXTERN_C_PUSH
  29
  30 #include <proc_service.h>
  31
  32 EXTERN_C_POP
  33
  34 #else /* HAVE_PROC_SERVICE_H */
  35
  36 /* The following fallback definitions have been imported and adjusted
  37    from glibc's proc_service.h  */
  38
  39 /* Callback interface for libthread_db, functions users must define.
  40    Copyright (C) 1999,2002,2003 Free Software Foundation, Inc.
  41    This file is part of the GNU C Library.
  42
  43    The GNU C Library is free software; you can redistribute it and/or
  44    modify it under the terms of the GNU Lesser General Public
  45    License as published by the Free Software Foundation; either
  46    version 2.1 of the License, or (at your option) any later version.
  47
  48    The GNU C Library is distributed in the hope that it will be useful,
  49    but WITHOUT ANY WARRANTY; without even the implied warranty of
  50    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  51    Lesser General Public License for more details.
  52
  53    You should have received a copy of the GNU Lesser General Public
  54    License along with the GNU C Library; if not, see
  55    <http://www.gnu.org/licenses/>.  */
  56
  57 /* The definitions in this file must correspond to those in the debugger.  */
  58
  59 #ifdef HAVE_SYS_PROCFS_H
  60 #include <sys/procfs.h>
  61 #endif
  62
  63 #include "gregset.h"
  64
  65 EXTERN_C_PUSH
  66
  67 /* Functions in this interface return one of these status codes.  */
  68 typedef enum
  69 {
  70   PS_OK,                /* Generic "call succeeded".  */
  71   PS_ERR,               /* Generic error. */
  72   PS_BADPID,            /* Bad process handle.  */
  73   PS_BADLID,            /* Bad LWP identifier.  */
  74   PS_BADADDR,           /* Bad address.  */
  75   PS_NOSYM,             /* Could not find given symbol.  */
  76   PS_NOFREGS            /* FPU register set not available for given LWP.  */
  77 } ps_err_e;
  78
  79 #ifndef HAVE_LWPID_T
  80 typedef unsigned int lwpid_t;
  81 #endif
  82
  83 #ifndef HAVE_PSADDR_T
  84 typedef void *psaddr_t;
  85 #endif
  86
  87 #ifndef HAVE_PRGREGSET_T
  88 typedef gdb_gregset_t prgregset_t;
  89 #endif
  90
  91 #ifndef HAVE_PRFPREGSET_T
  92 typedef gdb_fpregset_t prfpregset_t;
  93 #endif
  94
  95 /* This type is opaque in this interface.  It's defined by the user of
  96    libthread_db.  GDB's version is defined below.  */
  97 struct ps_prochandle;
  98
  99
 100 /* Read or write process memory at the given address.  */
 101 extern ps_err_e ps_pdread (struct ps_prochandle *,
 102                            psaddr_t, void *, size_t);
 103 extern ps_err_e ps_pdwrite (struct ps_prochandle *,
 104                             psaddr_t, const void *, size_t);
 105 extern ps_err_e ps_ptread (struct ps_prochandle *,
 106                            psaddr_t, void *, size_t);
 107 extern ps_err_e ps_ptwrite (struct ps_prochandle *,
 108                             psaddr_t, const void *, size_t);
 109
 110
 111 /* Get and set the given LWP's general or FPU register set.  */
 112 extern ps_err_e ps_lgetregs (struct ps_prochandle *,
 113                              lwpid_t, prgregset_t);
 114 extern ps_err_e ps_lsetregs (struct ps_prochandle *,
 115                              lwpid_t, const prgregset_t);
 116 extern ps_err_e ps_lgetfpregs (struct ps_prochandle *,
 117                                lwpid_t, prfpregset_t *);
 118 extern ps_err_e ps_lsetfpregs (struct ps_prochandle *,
 119                                lwpid_t, const prfpregset_t *);
 120
 121 /* Return the PID of the process.  */
 122 extern pid_t ps_getpid (struct ps_prochandle *);
 123
 124 /* Fetch the special per-thread address associated with the given LWP.
 125    This call is only used on a few platforms (most use a normal register).
 126    The meaning of the `int' parameter is machine-dependent.  */
 127 extern ps_err_e ps_get_thread_area (const struct ps_prochandle *,
 128                                     lwpid_t, int, psaddr_t *);
 129
 130
 131 /* Look up the named symbol in the named DSO in the symbol tables
 132    associated with the process being debugged, filling in *SYM_ADDR
 133    with the corresponding run-time address.  */
 134 extern ps_err_e ps_pglobal_lookup (struct ps_prochandle *,
 135                                    const char *object_name,
 136                                    const char *sym_name,
 137                                    psaddr_t *sym_addr);
 138
 139
 140 /* Stop or continue the entire process.  */
 141 extern ps_err_e ps_pstop (struct ps_prochandle *);
 142 extern ps_err_e ps_pcontinue (struct ps_prochandle *);
 143
 144 /* Stop or continue the given LWP alone.  */
 145 extern ps_err_e ps_lstop (struct ps_prochandle *, lwpid_t);
 146 extern ps_err_e ps_lcontinue (struct ps_prochandle *, lwpid_t);
 147
 148 /* The following are only defined in/called by Solaris.  */
 149
 150 /* Get size of extra register set.  */
 151 extern ps_err_e ps_lgetxregsize (struct ps_prochandle *ph,
 152                                  lwpid_t lwpid, int *xregsize);
 153 /* Get extra register set.  */
 154 extern ps_err_e ps_lgetxregs (struct ps_prochandle *ph, lwpid_t lwpid,
 155                               caddr_t xregset);
 156 extern ps_err_e ps_lsetxregs (struct ps_prochandle *ph, lwpid_t lwpid,
 157                               caddr_t xregset);
 158
 159 /* Log a message (sends to gdb_stderr).  */
 160 extern void ps_plog (const char *fmt, ...);
 161
 162 EXTERN_C_POP
 163
 164 #endif /* HAVE_PROC_SERVICE_H */
 165
 166 /* Fix-up some broken systems.  */
 167
 168 /* Unfortunately glibc 2.1.3 was released with a broken prfpregset_t
 169    type.  We let configure check for this lossage, and make
 170    appropriate typedefs here.  */
 171
 172 #ifdef PRFPREGSET_T_BROKEN
 173 typedef gdb_fpregset_t gdb_prfpregset_t;
 174 #else
 175 typedef prfpregset_t gdb_prfpregset_t;
 176 #endif
 177
 178 /* GDB specific structure that identifies the target process.  */
 179 struct ps_prochandle
 180 {
 181   /* The LWP we use for memory reads.  */
 182   ptid_t ptid;
 183 };
 184
 185 #endif /* gdb_proc_service.h */