125 lines
4 KiB
C
125 lines
4 KiB
C
/* Register support routines for the remote server for GDB.
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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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 REGCACHE_H
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#define REGCACHE_H
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struct inferior_list_entry;
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struct thread_info;
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struct target_desc;
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/* The register exists, it has a value, but we don't know what it is.
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Used when inspecting traceframes. */
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#define REG_UNAVAILABLE 0
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/* We know the register's value (and we have it cached). */
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#define REG_VALID 1
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/* The data for the register cache. Note that we have one per
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inferior; this is primarily for simplicity, as the performance
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benefit is minimal. */
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struct regcache
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{
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/* The regcache's target description. */
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const struct target_desc *tdesc;
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/* Whether the REGISTERS buffer's contents are valid. If false, we
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haven't fetched the registers from the target yet. Not that this
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register cache is _not_ pass-through, unlike GDB's. Note that
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"valid" here is unrelated to whether the registers are available
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in a traceframe. For that, check REGISTER_STATUS below. */
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int registers_valid;
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int registers_owned;
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unsigned char *registers;
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#ifndef IN_PROCESS_AGENT
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/* One of REG_UNAVAILBLE or REG_VALID. */
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unsigned char *register_status;
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#endif
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};
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struct regcache *init_register_cache (struct regcache *regcache,
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const struct target_desc *tdesc,
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unsigned char *regbuf);
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void regcache_cpy (struct regcache *dst, struct regcache *src);
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/* Create a new register cache for INFERIOR. */
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struct regcache *new_register_cache (const struct target_desc *tdesc);
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struct regcache *get_thread_regcache (struct thread_info *thread, int fetch);
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/* Release all memory associated with the register cache for INFERIOR. */
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void free_register_cache (struct regcache *regcache);
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/* Invalidate cached registers for one thread. */
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void regcache_invalidate_thread (struct thread_info *);
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/* Invalidate cached registers for all threads of the current
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process. */
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void regcache_invalidate (void);
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/* Invalidate and release the register cache of all threads of the
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current process. */
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void regcache_release (void);
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/* Convert all registers to a string in the currently specified remote
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format. */
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void registers_to_string (struct regcache *regcache, char *buf);
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/* Convert a string to register values and fill our register cache. */
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void registers_from_string (struct regcache *regcache, char *buf);
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CORE_ADDR regcache_read_pc (struct regcache *regcache);
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void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
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/* Return a pointer to the description of register ``n''. */
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struct reg *find_register_by_number (const struct target_desc *tdesc, int n);
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int register_cache_size (const struct target_desc *tdesc);
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int register_size (const struct target_desc *tdesc, int n);
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int find_regno (const struct target_desc *tdesc, const char *name);
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void supply_register (struct regcache *regcache, int n, const void *buf);
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void supply_register_zeroed (struct regcache *regcache, int n);
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void supply_register_by_name (struct regcache *regcache,
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const char *name, const void *buf);
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void supply_regblock (struct regcache *regcache, const void *buf);
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void collect_register (struct regcache *regcache, int n, void *buf);
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void collect_register_as_string (struct regcache *regcache, int n, char *buf);
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void collect_register_by_name (struct regcache *regcache,
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const char *name, void *buf);
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#endif /* REGCACHE_H */
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