gdb/gdb_proc_service.h

   1 /* <proc_service.h> replacement for systems that don't have it.
   2    Copyright (C) 2000-2018 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 #include "gregset.h"
  25
  26 struct thread_info;
  27
  28 #ifdef HAVE_PROC_SERVICE_H
  29
  30 /* glibc's proc_service.h doesn't wrap itself with extern "C".  Need
  31    to do it ourselves.  */
  32 EXTERN_C_PUSH
  33
  34 #include <proc_service.h>
  35
  36 EXTERN_C_POP
  37
  38 #else /* HAVE_PROC_SERVICE_H */
  39
  40 /* The following fallback definitions have been imported and adjusted
  41    from glibc's proc_service.h  */
  42
  43 /* Callback interface for libthread_db, functions users must define.
  44    Copyright (C) 1999,2002,2003 Free Software Foundation, Inc.
  45    This file is part of the GNU C Library.
  46
  47    The GNU C Library is free software; you can redistribute it and/or
  48    modify it under the terms of the GNU Lesser General Public
  49    License as published by the Free Software Foundation; either
  50    version 2.1 of the License, or (at your option) any later version.
  51
  52    The GNU C Library is distributed in the hope that it will be useful,
  53    but WITHOUT ANY WARRANTY; without even the implied warranty of
  54    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  55    Lesser General Public License for more details.
  56
  57    You should have received a copy of the GNU Lesser General Public
  58    License along with the GNU C Library; if not, see
  59    <http://www.gnu.org/licenses/>.  */
  60
  61 /* The definitions in this file must correspond to those in the debugger.  */
  62
  63 #ifdef HAVE_SYS_PROCFS_H
  64 #include <sys/procfs.h>
  65 #endif
  66
  67 /* Not all platforms bring in <linux/elf.h> via <sys/procfs.h>.  If
  68    <sys/procfs.h> wasn't enough to find elf_fpregset_t, try the kernel
  69    headers also (but don't if we don't need to).  */
  70 #ifndef HAVE_ELF_FPREGSET_T
  71 # ifdef HAVE_LINUX_ELF_H
  72 #  include <linux/elf.h>
  73 # endif
  74 #endif
  75
  76 EXTERN_C_PUSH
  77
  78 /* Functions in this interface return one of these status codes.  */
  79 typedef enum
  80 {
  81   PS_OK,                /* Generic "call succeeded".  */
  82   PS_ERR,               /* Generic error.  */
  83   PS_BADPID,            /* Bad process handle.  */
  84   PS_BADLID,            /* Bad LWP identifier.  */
  85   PS_BADADDR,           /* Bad address.  */
  86   PS_NOSYM,             /* Could not find given symbol.  */
  87   PS_NOFREGS            /* FPU register set not available for given LWP.  */
  88 } ps_err_e;
  89
  90 #ifndef HAVE_LWPID_T
  91 typedef unsigned int lwpid_t;
  92 #endif
  93
  94 #ifndef HAVE_PSADDR_T
  95 typedef void *psaddr_t;
  96 #endif
  97
  98 #ifndef HAVE_PRGREGSET_T
  99 typedef elf_gregset_t prgregset_t;
 100 #endif
 101
 102 #ifndef HAVE_PRFPREGSET_T
 103 typedef elf_fpregset_t prfpregset_t;
 104 #endif
 105
 106 /* This type is opaque in this interface.  It's defined by the user of
 107    libthread_db.  GDB's version is defined below.  */
 108 struct ps_prochandle;
 109
 110
 111 /* Read or write process memory at the given address.  */
 112 extern ps_err_e ps_pdread (struct ps_prochandle *,
 113                            psaddr_t, void *, size_t);
 114 extern ps_err_e ps_pdwrite (struct ps_prochandle *,
 115                             psaddr_t, const void *, size_t);
 116 extern ps_err_e ps_ptread (struct ps_prochandle *,
 117                            psaddr_t, void *, size_t);
 118 extern ps_err_e ps_ptwrite (struct ps_prochandle *,
 119                             psaddr_t, const void *, size_t);
 120
 121
 122 /* Get and set the given LWP's general or FPU register set.  */
 123 extern ps_err_e ps_lgetregs (struct ps_prochandle *,
 124                              lwpid_t, prgregset_t);
 125 extern ps_err_e ps_lsetregs (struct ps_prochandle *,
 126                              lwpid_t, const prgregset_t);
 127 extern ps_err_e ps_lgetfpregs (struct ps_prochandle *,
 128                                lwpid_t, prfpregset_t *);
 129 extern ps_err_e ps_lsetfpregs (struct ps_prochandle *,
 130                                lwpid_t, const prfpregset_t *);
 131
 132 /* Return the PID of the process.  */
 133 extern pid_t ps_getpid (struct ps_prochandle *);
 134
 135 /* Fetch the special per-thread address associated with the given LWP.
 136    This call is only used on a few platforms (most use a normal register).
 137    The meaning of the `int' parameter is machine-dependent.  */
 138 extern ps_err_e ps_get_thread_area (struct ps_prochandle *,
 139                                     lwpid_t, int, psaddr_t *);
 140
 141
 142 /* Look up the named symbol in the named DSO in the symbol tables
 143    associated with the process being debugged, filling in *SYM_ADDR
 144    with the corresponding run-time address.  */
 145 extern ps_err_e ps_pglobal_lookup (struct ps_prochandle *,
 146                                    const char *object_name,
 147                                    const char *sym_name,
 148                                    psaddr_t *sym_addr);
 149
 150
 151 /* Stop or continue the entire process.  */
 152 extern ps_err_e ps_pstop (struct ps_prochandle *);
 153 extern ps_err_e ps_pcontinue (struct ps_prochandle *);
 154
 155 /* Stop or continue the given LWP alone.  */
 156 extern ps_err_e ps_lstop (struct ps_prochandle *, lwpid_t);
 157 extern ps_err_e ps_lcontinue (struct ps_prochandle *, lwpid_t);
 158
 159 /* The following are only defined in/called by Solaris.  */
 160
 161 /* Get size of extra register set.  */
 162 extern ps_err_e ps_lgetxregsize (struct ps_prochandle *ph,
 163                                  lwpid_t lwpid, int *xregsize);
 164 /* Get extra register set.  */
 165 extern ps_err_e ps_lgetxregs (struct ps_prochandle *ph, lwpid_t lwpid,
 166                               caddr_t xregset);
 167 extern ps_err_e ps_lsetxregs (struct ps_prochandle *ph, lwpid_t lwpid,
 168                               caddr_t xregset);
 169
 170 /* Log a message (sends to gdb_stderr).  */
 171 extern void ps_plog (const char *fmt, ...);
 172
 173 EXTERN_C_POP
 174
 175 #endif /* HAVE_PROC_SERVICE_H */
 176
 177 /* Fix-up some broken systems.  */
 178
 179 /* Unfortunately glibc 2.1.3 was released with a broken prfpregset_t
 180    type.  We let configure check for this lossage, and make
 181    appropriate typedefs here.  */
 182
 183 #ifdef PRFPREGSET_T_BROKEN
 184 typedef gdb_fpregset_t gdb_prfpregset_t;
 185 #else
 186 typedef prfpregset_t gdb_prfpregset_t;
 187 #endif
 188
 189 /* GDB specific structure that identifies the target process.  */
 190 struct ps_prochandle
 191 {
 192   /* The LWP we use for memory reads.  */
 193   thread_info *thread;
 194 };
 195
 196 #endif /* gdb_proc_service.h */