226 lines
8.1 KiB
C++
226 lines
8.1 KiB
C++
/* Target description support for GDB.
|
|
|
|
Copyright (C) 2006-2018 Free Software Foundation, Inc.
|
|
|
|
Contributed by CodeSourcery.
|
|
|
|
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 TARGET_DESCRIPTIONS_H
|
|
#define TARGET_DESCRIPTIONS_H 1
|
|
#include "common/tdesc.h"
|
|
|
|
struct tdesc_arch_data;
|
|
struct target_ops;
|
|
/* An inferior's target description info is stored in this opaque
|
|
object. There's one such object per inferior. */
|
|
struct target_desc_info;
|
|
struct inferior;
|
|
|
|
/* Fetch the current inferior's description, and switch its current
|
|
architecture to one which incorporates that description. */
|
|
|
|
void target_find_description (void);
|
|
|
|
/* Discard any description fetched from the target for the current
|
|
inferior, and switch the current architecture to one with no target
|
|
description. */
|
|
|
|
void target_clear_description (void);
|
|
|
|
/* Return the current inferior's target description. This should only
|
|
be used by gdbarch initialization code; most access should be
|
|
through an existing gdbarch. */
|
|
|
|
const struct target_desc *target_current_description (void);
|
|
|
|
/* Copy inferior target description data. Used for example when
|
|
handling (v)forks, where child's description is the same as the
|
|
parent's, since the child really is a copy of the parent. */
|
|
|
|
void copy_inferior_target_desc_info (struct inferior *destinf,
|
|
struct inferior *srcinf);
|
|
|
|
/* Free a target_desc_info object. */
|
|
|
|
void target_desc_info_free (struct target_desc_info *tdesc_info);
|
|
|
|
/* Returns true if INFO indicates the target description had been
|
|
supplied by the user. */
|
|
|
|
int target_desc_info_from_user_p (struct target_desc_info *info);
|
|
|
|
/* Record architecture-specific functions to call for pseudo-register
|
|
support. If tdesc_use_registers is called and gdbarch_num_pseudo_regs
|
|
is greater than zero, then these should be called as well.
|
|
They are equivalent to the gdbarch methods with similar names,
|
|
except that they will only be called for pseudo registers. */
|
|
|
|
void set_tdesc_pseudo_register_name
|
|
(struct gdbarch *gdbarch, gdbarch_register_name_ftype *pseudo_name);
|
|
|
|
void set_tdesc_pseudo_register_type
|
|
(struct gdbarch *gdbarch, gdbarch_register_type_ftype *pseudo_type);
|
|
|
|
void set_tdesc_pseudo_register_reggroup_p
|
|
(struct gdbarch *gdbarch,
|
|
gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p);
|
|
|
|
/* Update GDBARCH to use the TARGET_DESC for registers. TARGET_DESC
|
|
may be GDBARCH's target description or (if GDBARCH does not have
|
|
one which describes registers) another target description
|
|
constructed by the gdbarch initialization routine.
|
|
|
|
Fixed register assignments are taken from EARLY_DATA, which is freed.
|
|
All registers which have not been assigned fixed numbers are given
|
|
numbers above the current value of gdbarch_num_regs.
|
|
gdbarch_num_regs and various register-related predicates are updated to
|
|
refer to the target description. This function should only be called from
|
|
the architecture's gdbarch initialization routine, and only after
|
|
successfully validating the required registers. */
|
|
|
|
void tdesc_use_registers (struct gdbarch *gdbarch,
|
|
const struct target_desc *target_desc,
|
|
struct tdesc_arch_data *early_data);
|
|
|
|
/* Allocate initial data for validation of a target description during
|
|
gdbarch initialization. */
|
|
|
|
struct tdesc_arch_data *tdesc_data_alloc (void);
|
|
|
|
/* Clean up data allocated by tdesc_data_alloc. This should only
|
|
be called to discard the data; tdesc_use_registers takes ownership
|
|
of its EARLY_DATA argument. */
|
|
|
|
void tdesc_data_cleanup (void *data_untyped);
|
|
|
|
/* Search FEATURE for a register named NAME. Record REGNO and the
|
|
register in DATA; when tdesc_use_registers is called, REGNO will be
|
|
assigned to the register. 1 is returned if the register was found,
|
|
0 if it was not. */
|
|
|
|
int tdesc_numbered_register (const struct tdesc_feature *feature,
|
|
struct tdesc_arch_data *data,
|
|
int regno, const char *name);
|
|
|
|
/* Search FEATURE for a register named NAME, but do not assign a fixed
|
|
register number to it. */
|
|
|
|
int tdesc_unnumbered_register (const struct tdesc_feature *feature,
|
|
const char *name);
|
|
|
|
/* Search FEATURE for a register named NAME, and return its size in
|
|
bits. The register must exist. */
|
|
|
|
int tdesc_register_size (const struct tdesc_feature *feature,
|
|
const char *name);
|
|
|
|
/* Search FEATURE for a register with any of the names from NAMES
|
|
(NULL-terminated). Record REGNO and the register in DATA; when
|
|
tdesc_use_registers is called, REGNO will be assigned to the
|
|
register. 1 is returned if the register was found, 0 if it was
|
|
not. */
|
|
|
|
int tdesc_numbered_register_choices (const struct tdesc_feature *feature,
|
|
struct tdesc_arch_data *data,
|
|
int regno, const char *const names[]);
|
|
|
|
|
|
/* Accessors for target descriptions. */
|
|
|
|
/* Return the BFD architecture associated with this target
|
|
description, or NULL if no architecture was specified. */
|
|
|
|
const struct bfd_arch_info *tdesc_architecture
|
|
(const struct target_desc *);
|
|
|
|
/* Return the OSABI associated with this target description, or
|
|
GDB_OSABI_UNKNOWN if no osabi was specified. */
|
|
|
|
enum gdb_osabi tdesc_osabi (const struct target_desc *);
|
|
|
|
/* Return non-zero if this target description is compatible
|
|
with the given BFD architecture. */
|
|
|
|
int tdesc_compatible_p (const struct target_desc *,
|
|
const struct bfd_arch_info *);
|
|
|
|
/* Return the string value of a property named KEY, or NULL if the
|
|
property was not specified. */
|
|
|
|
const char *tdesc_property (const struct target_desc *,
|
|
const char *key);
|
|
|
|
/* Return 1 if this target description describes any registers. */
|
|
|
|
int tdesc_has_registers (const struct target_desc *);
|
|
|
|
/* Return the feature with the given name, if present, or NULL if
|
|
the named feature is not found. */
|
|
|
|
const struct tdesc_feature *tdesc_find_feature (const struct target_desc *,
|
|
const char *name);
|
|
|
|
/* Return the name of FEATURE. */
|
|
|
|
const char *tdesc_feature_name (const struct tdesc_feature *feature);
|
|
|
|
/* Return the name of register REGNO, from the target description or
|
|
from an architecture-provided pseudo_register_name method. */
|
|
|
|
const char *tdesc_register_name (struct gdbarch *gdbarch, int regno);
|
|
|
|
/* Return the type of register REGNO, from the target description or
|
|
from an architecture-provided pseudo_register_type method. */
|
|
|
|
struct type *tdesc_register_type (struct gdbarch *gdbarch, int regno);
|
|
|
|
/* Return the type associated with ID, from the target description. */
|
|
|
|
struct type *tdesc_find_type (struct gdbarch *gdbarch, const char *id);
|
|
|
|
/* Check whether REGNUM is a member of REGGROUP using the target
|
|
description. Return -1 if the target description does not
|
|
specify a group. */
|
|
|
|
int tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno,
|
|
struct reggroup *reggroup);
|
|
|
|
/* Methods for constructing a target description. */
|
|
|
|
struct cleanup *make_cleanup_free_target_description (struct target_desc *);
|
|
void set_tdesc_architecture (struct target_desc *,
|
|
const struct bfd_arch_info *);
|
|
void set_tdesc_osabi (struct target_desc *, enum gdb_osabi osabi);
|
|
void set_tdesc_property (struct target_desc *,
|
|
const char *key, const char *value);
|
|
void tdesc_add_compatible (struct target_desc *,
|
|
const struct bfd_arch_info *);
|
|
|
|
#if GDB_SELF_TEST
|
|
namespace selftests {
|
|
|
|
/* Record that XML_FILE should generate a target description that equals
|
|
TDESC, to be verified by the "maintenance check xml-descriptions"
|
|
command. */
|
|
|
|
void record_xml_tdesc (const char *xml_file,
|
|
const struct target_desc *tdesc);
|
|
}
|
|
#endif
|
|
|
|
#endif /* TARGET_DESCRIPTIONS_H */
|