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