gdb/nto-tdep.h

   1 /* nto-tdep.h - QNX Neutrino target header.
   2
   3    Copyright (C) 2003, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6    Contributed by QNX Software Systems Ltd.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 #ifndef _NTO_TDEP_H
  24 #define _NTO_TDEP_H
  25
  26 #include "solist.h"
  27 #include "osabi.h"
  28 #include "regset.h"
  29 #include "gdbthread.h"
  30
  31 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
  32
  33 struct nto_target_ops
  34 {
  35 /* For 'maintenance debug nto-debug' command.  */
  36   int internal_debugging;
  37
  38 /* The CPUINFO flags from the remote.  Currently used by
  39    i386 for fxsave but future proofing other hosts.
  40    This is initialized in procfs_attach or nto_start_remote
  41    depending on our host/target.  It would only be invalid
  42    if we were talking to an older pdebug which didn't support
  43    the cpuinfo message.  */
  44   unsigned cpuinfo_flags;
  45
  46 /* True if successfully retrieved cpuinfo from remote.  */
  47   int cpuinfo_valid;
  48
  49 /* Given a register, return an id that represents the Neutrino
  50    regset it came from.  If reg == -1 update all regsets.  */
  51   int (*regset_id) (int);
  52
  53   void (*supply_gregset) (struct regcache *, char *);
  54
  55   void (*supply_fpregset) (struct regcache *, char *);
  56
  57   void (*supply_altregset) (struct regcache *, char *);
  58
  59 /* Given a regset, tell gdb about registers stored in data.  */
  60   void (*supply_regset) (struct regcache *, int, char *);
  61
  62 /* Given a register and regset, calculate the offset into the regset
  63    and stuff it into the last argument.  If regno is -1, calculate the
  64    size of the entire regset.  Returns length of data, -1 if unknown
  65    regset, 0 if unknown register.  */
  66   int (*register_area) (struct gdbarch *, int, int, unsigned *);
  67
  68 /* Build the Neutrino register set info into the data buffer.
  69    Return -1 if unknown regset, 0 otherwise.  */
  70   int (*regset_fill) (const struct regcache *, int, char *);
  71
  72 /* Gives the fetch_link_map_offsets function exposure outside of
  73    solib-svr4.c so that we can override relocate_section_addresses().  */
  74   struct link_map_offsets *(*fetch_link_map_offsets) (void);
  75
  76 /* Used by nto_elf_osabi_sniffer to determine if we're connected to an
  77    Neutrino target.  */
  78   enum gdb_osabi (*is_nto_target) (bfd *abfd);
  79 };
  80
  81 extern struct nto_target_ops current_nto_target;
  82
  83 #define nto_internal_debugging (current_nto_target.internal_debugging)
  84
  85 #define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
  86
  87 #define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
  88
  89 #define nto_regset_id (current_nto_target.regset_id)
  90
  91 #define nto_supply_gregset (current_nto_target.supply_gregset)
  92
  93 #define nto_supply_fpregset (current_nto_target.supply_fpregset)
  94
  95 #define nto_supply_altregset (current_nto_target.supply_altregset)
  96
  97 #define nto_supply_regset (current_nto_target.supply_regset)
  98
  99 #define nto_register_area (current_nto_target.register_area)
 100
 101 #define nto_regset_fill (current_nto_target.regset_fill)
 102
 103 #define nto_fetch_link_map_offsets \
 104 (current_nto_target.fetch_link_map_offsets)
 105
 106 #define nto_is_nto_target (current_nto_target.is_nto_target)
 107
 108 /* Keep this consistant with neutrino syspage.h.  */
 109 enum
 110 {
 111   CPUTYPE_X86,
 112   CPUTYPE_PPC,
 113   CPUTYPE_MIPS,
 114   CPUTYPE_SPARE,
 115   CPUTYPE_ARM,
 116   CPUTYPE_SH,
 117   CPUTYPE_UNKNOWN
 118 };
 119
 120 enum
 121 {
 122   OSTYPE_QNX4,
 123   OSTYPE_NTO
 124 };
 125
 126 /* These correspond to the DSMSG_* versions in dsmsgs.h.  */
 127 enum
 128 {
 129   NTO_REG_GENERAL,
 130   NTO_REG_FLOAT,
 131   NTO_REG_SYSTEM,
 132   NTO_REG_ALT,
 133   NTO_REG_END
 134 };
 135
 136 typedef char qnx_reg64[8];
 137
 138 typedef struct _debug_regs
 139 {
 140   qnx_reg64 padding[1024];
 141 } nto_regset_t;
 142
 143 struct private_thread_info
 144 {
 145   short tid;
 146   unsigned char state;
 147   unsigned char flags;
 148   char name[1];
 149 };
 150
 151 /* Generic functions in nto-tdep.c.  */
 152
 153 void nto_init_solib_absolute_prefix (void);
 154
 155 char **nto_parse_redirection (char *start_argv[], const char **in,
 156                               const char **out, const char **err);
 157
 158 void nto_relocate_section_addresses (struct so_list *,
 159                                      struct target_section *);
 160
 161 int nto_map_arch_to_cputype (const char *);
 162
 163 int nto_find_and_open_solib (char *, unsigned, char **);
 164
 165 enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
 166
 167 void nto_initialize_signals (void);
 168
 169 /* Dummy function for initializing nto_target_ops on targets which do
 170    not define a particular regset.  */
 171 void nto_dummy_supply_regset (struct regcache *regcache, char *regs);
 172
 173 int nto_in_dynsym_resolve_code (CORE_ADDR pc);
 174
 175 char *nto_extra_thread_info (struct thread_info *);
 176
 177 #endif