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 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 "defs.h"
26#include "solist.h"
27#include "osabi.h"
28#include "regset.h"
29
30/* Target operations defined for Neutrino targets (<target>-nto-tdep.c).  */
31
32struct 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) (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
80extern 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.  */
108enum
109{
110  CPUTYPE_X86,
111  CPUTYPE_PPC,
112  CPUTYPE_MIPS,
113  CPUTYPE_SPARE,
114  CPUTYPE_ARM,
115  CPUTYPE_SH,
116  CPUTYPE_UNKNOWN
117};
118
119enum
120{
121  OSTYPE_QNX4,
122  OSTYPE_NTO
123};
124
125/* These correspond to the DSMSG_* versions in dsmsgs.h. */
126enum
127{
128  NTO_REG_GENERAL,
129  NTO_REG_FLOAT,
130  NTO_REG_SYSTEM,
131  NTO_REG_ALT,
132  NTO_REG_END
133};
134
135typedef char qnx_reg64[8];
136
137typedef struct _debug_regs
138{
139  qnx_reg64 padding[1024];
140} nto_regset_t;
141
142/* Generic functions in nto-tdep.c.  */
143
144void nto_init_solib_absolute_prefix (void);
145
146void nto_set_target(struct nto_target_ops *);
147
148char **nto_parse_redirection (char *start_argv[], char **in,
149			      char **out, char **err);
150
151int proc_iterate_over_mappings (int (*func) (int, CORE_ADDR));
152
153void nto_relocate_section_addresses (struct so_list *,
154				     struct section_table *);
155
156int nto_map_arch_to_cputype (const char *);
157
158int nto_find_and_open_solib (char *, unsigned, char **);
159
160enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
161
162void nto_initialize_signals (void);
163
164void nto_generic_supply_gpregset (const struct regset *, struct regcache *,
165				  int, const void *, size_t);
166
167void nto_generic_supply_fpregset (const struct regset *, struct regcache *,
168				  int, const void *, size_t);
169
170void nto_generic_supply_altregset (const struct regset *, struct regcache *,
171				   int, const void *, size_t);
172
173/* Dummy function for initializing nto_target_ops on targets which do
174   not define a particular regset.  */
175void nto_dummy_supply_regset (struct regcache *regcache, char *regs);
176
177int nto_in_dynsym_resolve_code (CORE_ADDR pc);
178
179#endif
180