/* Target description support for GDB.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2019 Free Software Foundation, Inc.
Contributed by CodeSourcery.
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef TARGET_DESCRIPTIONS_H
#define TARGET_DESCRIPTIONS_H 1
+#include "gdbsupport/tdesc.h"
+#include "gdbarch.h"
-struct tdesc_feature;
struct tdesc_arch_data;
-struct tdesc_reg;
-struct target_desc;
struct target_ops;
-struct type;
+/* 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 target's description, and switch the current
+/* 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 current target, and switch
- the current architecture to one with no target description. */
+/* 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 global current target description. This should only be
- used by gdbarch initialization code; most access should be through
- an existing gdbarch. */
+/* 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 NUM_PSEUDO_REGS
+ 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. */
(struct gdbarch *gdbarch,
gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p);
-/* Update GDBARCH to use the target description for registers. Fixed
- register assignments are taken from EARLY_DATA, which is freed.
+/* 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 NUM_REGS. 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
+ 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
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_bitsize (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
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_feature_name (const struct tdesc_feature *feature);
-/* Return the type associated with ID in the context of FEATURE, or
- NULL if none. */
+/* 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. */
-struct type *tdesc_named_type (const struct tdesc_feature *feature,
- const char *id);
+int tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno,
+ struct reggroup *reggroup);
+
+
+/* A deleter adapter for a target desc. */
+
+struct target_desc_deleter
+{
+ void operator() (struct target_desc *desc) const;
+};
+
+/* A unique pointer specialization that holds a target_desc. */
+
+typedef std::unique_ptr<target_desc, target_desc_deleter> target_desc_up;
/* Methods for constructing a target description. */
-struct target_desc *allocate_target_description (void);
-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 {
-struct tdesc_feature *tdesc_create_feature (struct target_desc *tdesc,
- const char *name);
-void tdesc_record_type (struct tdesc_feature *feature, struct type *type);
+/* Record that XML_FILE should generate a target description that equals
+ TDESC, to be verified by the "maintenance check xml-descriptions"
+ command. This function takes ownership of TDESC. */
-void tdesc_create_reg (struct tdesc_feature *feature, const char *name,
- int regnum, int save_restore, const char *group,
- int bitsize, const char *type);
+void record_xml_tdesc (const char *xml_file,
+ const struct target_desc *tdesc);
+}
+#endif
#endif /* TARGET_DESCRIPTIONS_H */
projects / deliverable / binutils-gdb.git / blobdiff