2003-07-07 14:36:58 +00:00
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/* Per-frame user registers, for GDB, the GNU debugger.
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2005-12-17 22:34:03 +00:00
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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2003-07-07 14:36:58 +00:00
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Contributed by Red Hat.
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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 2 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, write to the Free Software
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2005-12-17 22:34:03 +00:00
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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2003-07-07 14:36:58 +00:00
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#ifndef USER_REGS_H
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#define USER_REGS_H
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/* Implement both builtin, and architecture specific, per-frame user
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visible registers.
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Builtin registers apply to all architectures, where as architecture
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specific registers are present when the architecture is selected.
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These registers are assigned register numbers outside the
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architecture's register range [0 .. NUM_REGS + NUM_PSEUDO_REGS).
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Their values should be constructed using per-frame information. */
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/* TODO: cagney/2003-06-27: Need to think more about how these
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registers are added, read, and modified. At present they are kind
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of assumed to be read-only. Should it, for instance, return a
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register descriptor that contains all the relvent access methods. */
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struct frame_info;
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2003-07-18 19:01:14 +00:00
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struct gdbarch;
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2003-07-07 14:36:58 +00:00
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/* Given an architecture, map a user visible register name onto its
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index. */
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extern int user_reg_map_name_to_regnum (struct gdbarch *gdbarch,
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const char *str, int len);
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extern const char *user_reg_map_regnum_to_name (struct gdbarch *gdbarch,
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int regnum);
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/* Return the value of the frame register in the specified frame.
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Note; These methods return a "struct value" instead of the raw
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bytes as, at the time the register is being added, the type needed
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to describe the register has not bee initialized. */
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typedef struct value *(user_reg_read_ftype) (struct frame_info *frame);
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extern struct value *value_of_user_reg (int regnum, struct frame_info *frame);
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/* Add a builtin register (present in all architectures). */
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extern void user_reg_add_builtin (const char *name,
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user_reg_read_ftype *read);
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/* Add a per-architecture frame register. */
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extern void user_reg_add (struct gdbarch *gdbarch, const char *name,
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user_reg_read_ftype *read);
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#endif
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