gdb/nto-tdep.h

   1 /* nto-tdep.h - QNX Neutrino target header.
   2
   3    Copyright (C) 2003, 2007 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 2 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, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22    Boston, MA 02110-1301, USA.  */
  23
  24 #ifndef _NTO_TDEP_H
  25 #define _NTO_TDEP_H
  26
  27 #include "defs.h"
  28 #include "solist.h"
  29 #include "osabi.h"
  30 #include "regset.h"
  31
  32 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
  33
  34 struct nto_target_ops
  35 {
  36 /* For 'maintenance debug nto-debug' command.  */
  37   int internal_debugging;
  38
  39 /* The CPUINFO flags from the remote.  Currently used by
  40    i386 for fxsave but future proofing other hosts.
  41    This is initialized in procfs_attach or nto_start_remote
  42    depending on our host/target.  It would only be invalid
  43    if we were talking to an older pdebug which didn't support
  44    the cpuinfo message.  */
  45   unsigned cpuinfo_flags;
  46
  47 /* True if successfully retrieved cpuinfo from remote.  */
  48   int cpuinfo_valid;
  49
  50 /* Given a register, return an id that represents the Neutrino
  51    regset it came from.  If reg == -1 update all regsets.  */
  52   int (*regset_id) (int);
  53
  54   void (*supply_gregset) (char *);
  55
  56   void (*supply_fpregset) (char *);
  57
  58   void (*supply_altregset) (char *);
  59
  60 /* Given a regset, tell gdb about registers stored in data.  */
  61   void (*supply_regset) (int, char *);
  62
  63 /* Given a register and regset, calculate the offset into the regset
  64    and stuff it into the last argument.  If regno is -1, calculate the
  65    size of the entire regset.  Returns length of data, -1 if unknown
  66    regset, 0 if unknown register.  */
  67   int (*register_area) (int, int, unsigned *);
  68
  69 /* Build the Neutrino register set info into the data buffer.
  70    Return -1 if unknown regset, 0 otherwise.  */
  71   int (*regset_fill) (int, char *);
  72
  73 /* Gives the fetch_link_map_offsets function exposure outside of
  74    solib-svr4.c so that we can override relocate_section_addresses().  */
  75   struct link_map_offsets *(*fetch_link_map_offsets) (void);
  76
  77 /* Used by nto_elf_osabi_sniffer to determine if we're connected to an
  78    Neutrino target.  */
  79   enum gdb_osabi (*is_nto_target) (bfd *abfd);
  80 };
  81
  82 extern struct nto_target_ops current_nto_target;
  83
  84 #define nto_internal_debugging (current_nto_target.internal_debugging)
  85
  86 #define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
  87
  88 #define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
  89
  90 #define nto_regset_id (current_nto_target.regset_id)
  91
  92 #define nto_supply_gregset (current_nto_target.supply_gregset)
  93
  94 #define nto_supply_fpregset (current_nto_target.supply_fpregset)
  95
  96 #define nto_supply_altregset (current_nto_target.supply_altregset)
  97
  98 #define nto_supply_regset (current_nto_target.supply_regset)
  99
 100 #define nto_register_area (current_nto_target.register_area)
 101
 102 #define nto_regset_fill (current_nto_target.regset_fill)
 103
 104 #define nto_fetch_link_map_offsets \
 105 (current_nto_target.fetch_link_map_offsets)
 106
 107 #define nto_is_nto_target (current_nto_target.is_nto_target)
 108
 109 /* Keep this consistant with neutrino syspage.h.  */
 110 enum
 111 {
 112   CPUTYPE_X86,
 113   CPUTYPE_PPC,
 114   CPUTYPE_MIPS,
 115   CPUTYPE_SPARE,
 116   CPUTYPE_ARM,
 117   CPUTYPE_SH,
 118   CPUTYPE_UNKNOWN
 119 };
 120
 121 enum
 122 {
 123   OSTYPE_QNX4,
 124   OSTYPE_NTO
 125 };
 126
 127 /* These correspond to the DSMSG_* versions in dsmsgs.h. */
 128 enum
 129 {
 130   NTO_REG_GENERAL,
 131   NTO_REG_FLOAT,
 132   NTO_REG_SYSTEM,
 133   NTO_REG_ALT,
 134   NTO_REG_END
 135 };
 136
 137 typedef char qnx_reg64[8];
 138
 139 typedef struct _debug_regs
 140 {
 141   qnx_reg64 padding[1024];
 142 } nto_regset_t;
 143
 144 /* Generic functions in nto-tdep.c.  */
 145
 146 void nto_init_solib_absolute_prefix (void);
 147
 148 void nto_set_target(struct nto_target_ops *);
 149
 150 char **nto_parse_redirection (char *start_argv[], char **in,
 151                               char **out, char **err);
 152
 153 int proc_iterate_over_mappings (int (*func) (int, CORE_ADDR));
 154
 155 void nto_relocate_section_addresses (struct so_list *,
 156                                      struct section_table *);
 157
 158 int nto_map_arch_to_cputype (const char *);
 159
 160 int nto_find_and_open_solib (char *, unsigned, char **);
 161
 162 enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
 163
 164 void nto_initialize_signals (void);
 165
 166 void nto_generic_supply_gpregset (const struct regset *, struct regcache *,
 167                                   int, const void *, size_t);
 168
 169 void nto_generic_supply_fpregset (const struct regset *, struct regcache *,
 170                                   int, const void *, size_t);
 171
 172 void nto_generic_supply_altregset (const struct regset *, struct regcache *,
 173                                    int, const void *, size_t);
 174
 175 /* Dummy function for initializing nto_target_ops on targets which do
 176    not define a particular regset.  */
 177 void nto_dummy_supply_regset (char *regs);
 178
 179 int nto_in_dynsym_resolve_code (CORE_ADDR pc);
 180
 181 #endif