gdb/nto-tdep.h

   1 /* nto-tdep.h - QNX Neutrino target header.
   2
   3    Copyright 2003 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., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef _NTO_TDEP_H
  25 #define _NTO_TDEP_H
  26
  27 #include "defs.h"
  28 #include "solist.h"
  29
  30 /* Generic functions in nto-tdep.c.  */
  31
  32 extern void nto_init_solib_absolute_prefix PARAMS ((void));
  33
  34 char **nto_parse_redirection
  35 PARAMS ((char *start_argv[], char **in, char **out, char **err));
  36
  37 int proc_iterate_over_mappings PARAMS ((int (*func) (int, CORE_ADDR)));
  38
  39 void nto_relocate_section_addresses
  40 PARAMS ((struct so_list *, struct section_table *));
  41
  42 int nto_map_arch_to_cputype PARAMS ((const char *));
  43
  44 int nto_find_and_open_solib PARAMS ((char *, unsigned, char **));
  45
  46 /* Dummy function for initializing nto_target_ops on targets which do
  47    not define a particular regset.  */
  48 void nto_dummy_supply_regset PARAMS ((char *regs));
  49
  50 /* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
  51
  52 struct nto_target_ops
  53 {
  54   int nto_internal_debugging;
  55   unsigned nto_cpuinfo_flags;
  56   int nto_cpuinfo_valid;
  57
  58   int (*nto_regset_id) (int);
  59   void (*nto_supply_gregset) (char *);
  60   void (*nto_supply_fpregset) (char *);
  61   void (*nto_supply_altregset) (char *);
  62   void (*nto_supply_regset) (int, char *);
  63   int (*nto_register_area) (int, int, unsigned *);
  64   int (*nto_regset_fill) (int, char *);
  65   struct link_map_offsets *(*nto_fetch_link_map_offsets) (void);
  66 };
  67
  68 extern struct nto_target_ops current_nto_target;
  69
  70 /* For 'maintenance debug nto-debug' command.  */
  71 #define nto_internal_debugging \
  72         (current_nto_target.nto_internal_debugging)
  73
  74 /* The CPUINFO flags from the remote.  Currently used by
  75    i386 for fxsave but future proofing other hosts.
  76    This is initialized in procfs_attach or nto_start_remote
  77    depending on our host/target.  It would only be invalid
  78    if we were talking to an older pdebug which didn't support
  79    the cpuinfo message.  */
  80 #define nto_cpuinfo_flags \
  81         (current_nto_target.nto_cpuinfo_flags)
  82
  83 /* True if successfully retrieved cpuinfo from remote.  */
  84 #define nto_cpuinfo_valid \
  85         (current_nto_target.nto_cpuinfo_valid)
  86
  87 /* Given a register, return an id that represents the Neutrino
  88    regset it came from.  If reg == -1 update all regsets.  */
  89 #define nto_regset_id(reg) \
  90         (*current_nto_target.nto_regset_id) (reg)
  91
  92 #define nto_supply_gregset(regs) \
  93         (*current_nto_target.nto_supply_gregset) (regs)
  94
  95 #define nto_supply_fpregset(regs) \
  96         (*current_nto_target.nto_supply_fpregset) (regs)
  97
  98 #define nto_supply_altregset(regs) \
  99         (*current_nto_target.nto_supply_altregset) (regs)
 100
 101 /* Given a regset, tell gdb about registers stored in data.  */
 102 #define nto_supply_regset(regset, data) \
 103         (*current_nto_target.nto_supply_regset) (regset, data)
 104
 105 /* Given a register and regset, calculate the offset into the regset
 106    and stuff it into the last argument.  If regno is -1, calculate the
 107    size of the entire regset.  Returns length of data, -1 if unknown
 108    regset, 0 if unknown register.  */
 109 #define nto_register_area(reg, regset, off) \
 110         (*current_nto_target.nto_register_area) (reg, regset, off)
 111
 112 /* Build the Neutrino register set info into the data buffer.
 113    Return -1 if unknown regset, 0 otherwise.  */
 114 #define nto_regset_fill(regset, data) \
 115         (*current_nto_target.nto_regset_fill) (regset, data)
 116
 117 /* Gives the fetch_link_map_offsets function exposure outside of
 118    solib-svr4.c so that we can override relocate_section_addresses().  */
 119 #define nto_fetch_link_map_offsets() \
 120         (*current_nto_target.nto_fetch_link_map_offsets) ()
 121
 122 /* Keep this consistant with neutrino syspage.h.  */
 123 enum
 124 {
 125   CPUTYPE_X86,
 126   CPUTYPE_PPC,
 127   CPUTYPE_MIPS,
 128   CPUTYPE_SPARE,
 129   CPUTYPE_ARM,
 130   CPUTYPE_SH,
 131   CPUTYPE_UNKNOWN
 132 };
 133
 134 enum
 135 {
 136   OSTYPE_QNX4,
 137   OSTYPE_NTO
 138 };
 139
 140 /* These correspond to the DSMSG_* versions in dsmsgs.h. */
 141 enum
 142 {
 143   NTO_REG_GENERAL,
 144   NTO_REG_FLOAT,
 145   NTO_REG_SYSTEM,
 146   NTO_REG_ALT,
 147   NTO_REG_END
 148 };
 149
 150 typedef char qnx_reg64[8];
 151
 152 typedef struct _debug_regs
 153 {
 154   qnx_reg64 padding[1024];
 155 } nto_regset_t;
 156
 157 #endif