gdb/nto-tdep.h

   1 /* nto-tdep.h - QNX Neutrino target header.
   2
   3    Copyright (C) 2003, 2007, 2008, 2009 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
  29 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
  30
  31 struct nto_target_ops
  32 {
  33 /* For 'maintenance debug nto-debug' command.  */
  34   int internal_debugging;
  35
  36 /* The CPUINFO flags from the remote.  Currently used by
  37    i386 for fxsave but future proofing other hosts.
  38    This is initialized in procfs_attach or nto_start_remote
  39    depending on our host/target.  It would only be invalid
  40    if we were talking to an older pdebug which didn't support
  41    the cpuinfo message.  */
  42   unsigned cpuinfo_flags;
  43
  44 /* True if successfully retrieved cpuinfo from remote.  */
  45   int cpuinfo_valid;
  46
  47 /* Given a register, return an id that represents the Neutrino
  48    regset it came from.  If reg == -1 update all regsets.  */
  49   int (*regset_id) (int);
  50
  51   void (*supply_gregset) (struct regcache *, char *);
  52
  53   void (*supply_fpregset) (struct regcache *, char *);
  54
  55   void (*supply_altregset) (struct regcache *, char *);
  56
  57 /* Given a regset, tell gdb about registers stored in data.  */
  58   void (*supply_regset) (struct regcache *, int, char *);
  59
  60 /* Given a register and regset, calculate the offset into the regset
  61    and stuff it into the last argument.  If regno is -1, calculate the
  62    size of the entire regset.  Returns length of data, -1 if unknown
  63    regset, 0 if unknown register.  */
  64   int (*register_area) (struct gdbarch *, int, int, unsigned *);
  65
  66 /* Build the Neutrino register set info into the data buffer.
  67    Return -1 if unknown regset, 0 otherwise.  */
  68   int (*regset_fill) (const struct regcache *, int, char *);
  69
  70 /* Gives the fetch_link_map_offsets function exposure outside of
  71    solib-svr4.c so that we can override relocate_section_addresses().  */
  72   struct link_map_offsets *(*fetch_link_map_offsets) (void);
  73
  74 /* Used by nto_elf_osabi_sniffer to determine if we're connected to an
  75    Neutrino target.  */
  76   enum gdb_osabi (*is_nto_target) (bfd *abfd);
  77 };
  78
  79 extern struct nto_target_ops current_nto_target;
  80
  81 #define nto_internal_debugging (current_nto_target.internal_debugging)
  82
  83 #define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
  84
  85 #define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
  86
  87 #define nto_regset_id (current_nto_target.regset_id)
  88
  89 #define nto_supply_gregset (current_nto_target.supply_gregset)
  90
  91 #define nto_supply_fpregset (current_nto_target.supply_fpregset)
  92
  93 #define nto_supply_altregset (current_nto_target.supply_altregset)
  94
  95 #define nto_supply_regset (current_nto_target.supply_regset)
  96
  97 #define nto_register_area (current_nto_target.register_area)
  98
  99 #define nto_regset_fill (current_nto_target.regset_fill)
 100
 101 #define nto_fetch_link_map_offsets \
 102 (current_nto_target.fetch_link_map_offsets)
 103
 104 #define nto_is_nto_target (current_nto_target.is_nto_target)
 105
 106 /* Keep this consistant with neutrino syspage.h.  */
 107 enum
 108 {
 109   CPUTYPE_X86,
 110   CPUTYPE_PPC,
 111   CPUTYPE_MIPS,
 112   CPUTYPE_SPARE,
 113   CPUTYPE_ARM,
 114   CPUTYPE_SH,
 115   CPUTYPE_UNKNOWN
 116 };
 117
 118 enum
 119 {
 120   OSTYPE_QNX4,
 121   OSTYPE_NTO
 122 };
 123
 124 /* These correspond to the DSMSG_* versions in dsmsgs.h. */
 125 enum
 126 {
 127   NTO_REG_GENERAL,
 128   NTO_REG_FLOAT,
 129   NTO_REG_SYSTEM,
 130   NTO_REG_ALT,
 131   NTO_REG_END
 132 };
 133
 134 typedef char qnx_reg64[8];
 135
 136 typedef struct _debug_regs
 137 {
 138   qnx_reg64 padding[1024];
 139 } nto_regset_t;
 140
 141 /* Generic functions in nto-tdep.c.  */
 142
 143 void nto_init_solib_absolute_prefix (void);
 144
 145 char **nto_parse_redirection (char *start_argv[], const char **in,
 146                               const char **out, const char **err);
 147
 148 void nto_relocate_section_addresses (struct so_list *,
 149                                      struct target_section *);
 150
 151 int nto_map_arch_to_cputype (const char *);
 152
 153 int nto_find_and_open_solib (char *, unsigned, char **);
 154
 155 enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
 156
 157 void nto_initialize_signals (void);
 158
 159 void nto_generic_supply_gpregset (const struct regset *, struct regcache *,
 160                                   int, const void *, size_t);
 161
 162 void nto_generic_supply_fpregset (const struct regset *, struct regcache *,
 163                                   int, const void *, size_t);
 164
 165 void nto_generic_supply_altregset (const struct regset *, struct regcache *,
 166                                    int, const void *, size_t);
 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 #endif