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/* nto-tdep.h - QNX Neutrino target header.
Copyright (C) 2003-2023 Free Software Foundation, Inc.
Contributed by QNX Software Systems Ltd.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef NTO_TDEP_H
#define NTO_TDEP_H
#include "solist.h"
#include "osabi.h"
#include "regset.h"
#include "gdbthread.h"
#include "gdbsupport/gdb-checked-static-cast.h"
/* Target operations defined for Neutrino targets (<target>-nto-tdep.c). */
struct nto_target_ops
{
/* The CPUINFO flags from the remote. Currently used by
i386 for fxsave but future proofing other hosts.
This is initialized in procfs_attach or nto_start_remote
depending on our host/target. It would only be invalid
if we were talking to an older pdebug which didn't support
the cpuinfo message. */
unsigned cpuinfo_flags;
/* True if successfully retrieved cpuinfo from remote. */
int cpuinfo_valid;
/* Given a register, return an id that represents the Neutrino
regset it came from. If reg == -1 update all regsets. */
int (*regset_id) (int);
void (*supply_gregset) (struct regcache *, char *);
void (*supply_fpregset) (struct regcache *, char *);
void (*supply_altregset) (struct regcache *, char *);
/* Given a regset, tell gdb about registers stored in data. */
void (*supply_regset) (struct regcache *, int, char *);
/* Given a register and regset, calculate the offset into the regset
and stuff it into the last argument. If regno is -1, calculate the
size of the entire regset. Returns length of data, -1 if unknown
regset, 0 if unknown register. */
int (*register_area) (struct gdbarch *, int, int, unsigned *);
/* Build the Neutrino register set info into the data buffer.
Return -1 if unknown regset, 0 otherwise. */
int (*regset_fill) (const struct regcache *, int, char *);
/* Gives the fetch_link_map_offsets function exposure outside of
solib-svr4.c so that we can override relocate_section_addresses(). */
struct link_map_offsets *(*fetch_link_map_offsets) (void);
/* Used by nto_elf_osabi_sniffer to determine if we're connected to an
Neutrino target. */
enum gdb_osabi (*is_nto_target) (bfd *abfd);
};
extern struct nto_target_ops current_nto_target;
#define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
#define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
#define nto_regset_id (current_nto_target.regset_id)
#define nto_supply_gregset (current_nto_target.supply_gregset)
#define nto_supply_fpregset (current_nto_target.supply_fpregset)
#define nto_supply_altregset (current_nto_target.supply_altregset)
#define nto_supply_regset (current_nto_target.supply_regset)
#define nto_register_area (current_nto_target.register_area)
#define nto_regset_fill (current_nto_target.regset_fill)
#define nto_fetch_link_map_offsets \
(current_nto_target.fetch_link_map_offsets)
#define nto_is_nto_target (current_nto_target.is_nto_target)
/* Keep this consistant with neutrino syspage.h. */
enum
{
CPUTYPE_X86,
CPUTYPE_PPC,
CPUTYPE_MIPS,
CPUTYPE_SPARE,
CPUTYPE_ARM,
CPUTYPE_SH,
CPUTYPE_UNKNOWN
};
enum
{
OSTYPE_QNX4,
OSTYPE_NTO
};
/* These correspond to the DSMSG_* versions in dsmsgs.h. */
enum
{
NTO_REG_GENERAL,
NTO_REG_FLOAT,
NTO_REG_SYSTEM,
NTO_REG_ALT,
NTO_REG_END
};
typedef char qnx_reg64[8];
typedef struct _debug_regs
{
qnx_reg64 padding[1024];
} nto_regset_t;
struct nto_thread_info : public private_thread_info
{
short tid = 0;
unsigned char state = 0;
unsigned char flags = 0;
std::string name;
};
static inline nto_thread_info *
get_nto_thread_info (thread_info *thread)
{
return gdb::checked_static_cast<nto_thread_info *> (thread->priv.get ());
}
/* Per-inferior data, common for both procfs and remote. */
struct nto_inferior_data
{
/* Last stopped flags result from wait function */
unsigned int stopped_flags = 0;
/* Last known stopped PC */
CORE_ADDR stopped_pc = 0;
};
/* Generic functions in nto-tdep.c. */
void nto_init_solib_absolute_prefix (void);
char **nto_parse_redirection (char *start_argv[], const char **in,
const char **out, const char **err);
void nto_relocate_section_addresses (shobj &, target_section *);
int nto_map_arch_to_cputype (const char *);
int nto_find_and_open_solib (const char *, unsigned,
gdb::unique_xmalloc_ptr<char> *);
enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
void nto_initialize_signals (void);
/* Dummy function for initializing nto_target_ops on targets which do
not define a particular regset. */
void nto_dummy_supply_regset (struct regcache *regcache, char *regs);
int nto_in_dynsym_resolve_code (CORE_ADDR pc);
const char *nto_extra_thread_info (struct target_ops *self, struct thread_info *);
LONGEST nto_read_auxv_from_initial_stack (CORE_ADDR initial_stack,
gdb_byte *readbuf,
LONGEST len, size_t sizeof_auxv_t);
struct nto_inferior_data *nto_inferior_data (struct inferior *inf);
#endif /* NTO_TDEP_H */
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