gdb/nto-tdep.h

   1 /* nto-tdep.h - QNX Neutrino target header.
   2
   3    Copyright (C) 2003, 2007-2012 Free Software Foundation, Inc.
   4
   5    Contributed by QNX Software Systems Ltd.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef _NTO_TDEP_H
  23 #define _NTO_TDEP_H
  24
  25 #include "solist.h"
  26 #include "osabi.h"
  27 #include "regset.h"
  28 #include "gdbthread.h"
  29
  30 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
  31
  32 struct nto_target_ops
  33 {
  34 /* For 'maintenance debug nto-debug' command.  */
  35   int internal_debugging;
  36
  37 /* The CPUINFO flags from the remote.  Currently used by
  38    i386 for fxsave but future proofing other hosts.
  39    This is initialized in procfs_attach or nto_start_remote
  40    depending on our host/target.  It would only be invalid
  41    if we were talking to an older pdebug which didn't support
  42    the cpuinfo message.  */
  43   unsigned cpuinfo_flags;
  44
  45 /* True if successfully retrieved cpuinfo from remote.  */
  46   int cpuinfo_valid;
  47
  48 /* Given a register, return an id that represents the Neutrino
  49    regset it came from.  If reg == -1 update all regsets.  */
  50   int (*regset_id) (int);
  51
  52   void (*supply_gregset) (struct regcache *, char *);
  53
  54   void (*supply_fpregset) (struct regcache *, char *);
  55
  56   void (*supply_altregset) (struct regcache *, char *);
  57
  58 /* Given a regset, tell gdb about registers stored in data.  */
  59   void (*supply_regset) (struct regcache *, int, char *);
  60
  61 /* Given a register and regset, calculate the offset into the regset
  62    and stuff it into the last argument.  If regno is -1, calculate the
  63    size of the entire regset.  Returns length of data, -1 if unknown
  64    regset, 0 if unknown register.  */
  65   int (*register_area) (struct gdbarch *, int, int, unsigned *);
  66
  67 /* Build the Neutrino register set info into the data buffer.
  68    Return -1 if unknown regset, 0 otherwise.  */
  69   int (*regset_fill) (const struct regcache *, int, char *);
  70
  71 /* Gives the fetch_link_map_offsets function exposure outside of
  72    solib-svr4.c so that we can override relocate_section_addresses().  */
  73   struct link_map_offsets *(*fetch_link_map_offsets) (void);
  74
  75 /* Used by nto_elf_osabi_sniffer to determine if we're connected to an
  76    Neutrino target.  */
  77   enum gdb_osabi (*is_nto_target) (bfd *abfd);
  78 };
  79
  80 extern struct nto_target_ops current_nto_target;
  81
  82 #define nto_internal_debugging (current_nto_target.internal_debugging)
  83
  84 #define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
  85
  86 #define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
  87
  88 #define nto_regset_id (current_nto_target.regset_id)
  89
  90 #define nto_supply_gregset (current_nto_target.supply_gregset)
  91
  92 #define nto_supply_fpregset (current_nto_target.supply_fpregset)
  93
  94 #define nto_supply_altregset (current_nto_target.supply_altregset)
  95
  96 #define nto_supply_regset (current_nto_target.supply_regset)
  97
  98 #define nto_register_area (current_nto_target.register_area)
  99
 100 #define nto_regset_fill (current_nto_target.regset_fill)
 101
 102 #define nto_fetch_link_map_offsets \
 103 (current_nto_target.fetch_link_map_offsets)
 104
 105 #define nto_is_nto_target (current_nto_target.is_nto_target)
 106
 107 /* Keep this consistant with neutrino syspage.h.  */
 108 enum
 109 {
 110   CPUTYPE_X86,
 111   CPUTYPE_PPC,
 112   CPUTYPE_MIPS,
 113   CPUTYPE_SPARE,
 114   CPUTYPE_ARM,
 115   CPUTYPE_SH,
 116   CPUTYPE_UNKNOWN
 117 };
 118
 119 enum
 120 {
 121   OSTYPE_QNX4,
 122   OSTYPE_NTO
 123 };
 124
 125 /* These correspond to the DSMSG_* versions in dsmsgs.h.  */
 126 enum
 127 {
 128   NTO_REG_GENERAL,
 129   NTO_REG_FLOAT,
 130   NTO_REG_SYSTEM,
 131   NTO_REG_ALT,
 132   NTO_REG_END
 133 };
 134
 135 typedef char qnx_reg64[8];
 136
 137 typedef struct _debug_regs
 138 {
 139   qnx_reg64 padding[1024];
 140 } nto_regset_t;
 141
 142 struct private_thread_info
 143 {
 144   short tid;
 145   unsigned char state;
 146   unsigned char flags;
 147   char name[1];
 148 };
 149
 150 /* Generic functions in nto-tdep.c.  */
 151
 152 void nto_init_solib_absolute_prefix (void);
 153
 154 char **nto_parse_redirection (char *start_argv[], const char **in,
 155                               const char **out, const char **err);
 156
 157 void nto_relocate_section_addresses (struct so_list *,
 158                                      struct target_section *);
 159
 160 int nto_map_arch_to_cputype (const char *);
 161
 162 int nto_find_and_open_solib (char *, unsigned, char **);
 163
 164 enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
 165
 166 void nto_initialize_signals (void);
 167
 168 /* Dummy function for initializing nto_target_ops on targets which do
 169    not define a particular regset.  */
 170 void nto_dummy_supply_regset (struct regcache *regcache, char *regs);
 171
 172 int nto_in_dynsym_resolve_code (CORE_ADDR pc);
 173
 174 char *nto_extra_thread_info (struct thread_info *);
 175
 176 #endif