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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [target-descriptions.h] - Blame information for rev 857

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1 24 jeremybenn
/* Target description support for GDB.
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   Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
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   Contributed by CodeSourcery.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#ifndef TARGET_DESCRIPTIONS_H
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#define TARGET_DESCRIPTIONS_H 1
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struct tdesc_feature;
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struct tdesc_arch_data;
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struct tdesc_reg;
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struct target_desc;
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struct target_ops;
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struct type;
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/* Fetch the current target's description, and switch the current
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   architecture to one which incorporates that description.  */
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void target_find_description (void);
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/* Discard any description fetched from the current target, and switch
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   the current architecture to one with no target description.  */
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void target_clear_description (void);
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/* Return the global current target description.  This should only be
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   used by gdbarch initialization code; most access should be through
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   an existing gdbarch.  */
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const struct target_desc *target_current_description (void);
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/* Record architecture-specific functions to call for pseudo-register
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   support.  If tdesc_use_registers is called and gdbarch_num_pseudo_regs
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   is greater than zero, then these should be called as well.
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   They are equivalent to the gdbarch methods with similar names,
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   except that they will only be called for pseudo registers.  */
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void set_tdesc_pseudo_register_name
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  (struct gdbarch *gdbarch, gdbarch_register_name_ftype *pseudo_name);
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void set_tdesc_pseudo_register_type
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  (struct gdbarch *gdbarch, gdbarch_register_type_ftype *pseudo_type);
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void set_tdesc_pseudo_register_reggroup_p
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  (struct gdbarch *gdbarch,
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   gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p);
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/* Update GDBARCH to use the TARGET_DESC for registers.  TARGET_DESC
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   may be GDBARCH's target description or (if GDBARCH does not have
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   one which describes registers) another target description
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   constructed by the gdbarch initialization routine.
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   Fixed register assignments are taken from EARLY_DATA, which is freed.
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   All registers which have not been assigned fixed numbers are given
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   numbers above the current value of gdbarch_num_regs.
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   gdbarch_num_regs and various  register-related predicates are updated to
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   refer to the target description.  This function should only be called from
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   the architecture's gdbarch initialization routine, and only after
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   successfully validating the required registers.  */
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void tdesc_use_registers (struct gdbarch *gdbarch,
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                          const struct target_desc *target_desc,
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                          struct tdesc_arch_data *early_data);
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/* Allocate initial data for validation of a target description during
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   gdbarch initialization.  */
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struct tdesc_arch_data *tdesc_data_alloc (void);
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/* Clean up data allocated by tdesc_data_alloc.  This should only
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   be called to discard the data; tdesc_use_registers takes ownership
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   of its EARLY_DATA argument.  */
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void tdesc_data_cleanup (void *data_untyped);
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/* Search FEATURE for a register named NAME.  Record REGNO and the
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   register in DATA; when tdesc_use_registers is called, REGNO will be
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   assigned to the register.  1 is returned if the register was found,
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int tdesc_numbered_register (const struct tdesc_feature *feature,
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                             struct tdesc_arch_data *data,
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                             int regno, const char *name);
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/* Search FEATURE for a register named NAME, and return its size in
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   bits.  The register must exist.  */
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int tdesc_register_size (const struct tdesc_feature *feature,
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                         const char *name);
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/* Search FEATURE for a register with any of the names from NAMES
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   (NULL-terminated).  Record REGNO and the register in DATA; when
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   tdesc_use_registers is called, REGNO will be assigned to the
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   register.  1 is returned if the register was found, 0 if it was
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   not.  */
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int tdesc_numbered_register_choices (const struct tdesc_feature *feature,
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                                     struct tdesc_arch_data *data,
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                                     int regno, const char *const names[]);
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/* Accessors for target descriptions.  */
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/* Return the BFD architecture associated with this target
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   description, or NULL if no architecture was specified.  */
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const struct bfd_arch_info *tdesc_architecture
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  (const struct target_desc *);
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/* Return the string value of a property named KEY, or NULL if the
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   property was not specified.  */
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const char *tdesc_property (const struct target_desc *,
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                            const char *key);
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/* Return 1 if this target description describes any registers.  */
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int tdesc_has_registers (const struct target_desc *);
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/* Return the feature with the given name, if present, or NULL if
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   the named feature is not found.  */
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const struct tdesc_feature *tdesc_find_feature (const struct target_desc *,
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                                                const char *name);
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/* Return the name of FEATURE.  */
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const char *tdesc_feature_name (const struct tdesc_feature *feature);
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/* Return the type associated with ID in the context of FEATURE, or
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   NULL if none.  */
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struct type *tdesc_named_type (const struct tdesc_feature *feature,
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                               const char *id);
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/* Return the name of register REGNO, from the target description or
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   from an architecture-provided pseudo_register_name method.  */
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const char *tdesc_register_name (struct gdbarch *gdbarch, int regno);
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/* Check whether REGNUM is a member of REGGROUP using the target
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   description.  Return -1 if the target description does not
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   specify a group.  */
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int tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno,
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                                  struct reggroup *reggroup);
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/* Methods for constructing a target description.  */
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struct target_desc *allocate_target_description (void);
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struct cleanup *make_cleanup_free_target_description (struct target_desc *);
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void set_tdesc_architecture (struct target_desc *,
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                             const struct bfd_arch_info *);
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void set_tdesc_property (struct target_desc *,
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                         const char *key, const char *value);
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struct tdesc_feature *tdesc_create_feature (struct target_desc *tdesc,
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                                            const char *name);
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void tdesc_record_type (struct tdesc_feature *feature, struct type *type);
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void tdesc_create_reg (struct tdesc_feature *feature, const char *name,
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                       int regnum, int save_restore, const char *group,
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                       int bitsize, const char *type);
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#endif /* TARGET_DESCRIPTIONS_H */

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