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- /* Register support routines for the remote server for GDB.
- Copyright (C) 2001-2022 Free Software Foundation, Inc.
- 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 GDBSERVER_REGCACHE_H
- #define GDBSERVER_REGCACHE_H
- #include "gdbsupport/common-regcache.h"
- struct thread_info;
- struct target_desc;
- /* The data for the register cache. Note that we have one per
- inferior; this is primarily for simplicity, as the performance
- benefit is minimal. */
- struct regcache : public reg_buffer_common
- {
- /* The regcache's target description. */
- const struct target_desc *tdesc = nullptr;
- /* Whether the REGISTERS buffer's contents are valid. If false, we
- haven't fetched the registers from the target yet. Not that this
- register cache is _not_ pass-through, unlike GDB's. Note that
- "valid" here is unrelated to whether the registers are available
- in a traceframe. For that, check REGISTER_STATUS below. */
- int registers_valid = 0;
- int registers_owned = 0;
- unsigned char *registers = nullptr;
- #ifndef IN_PROCESS_AGENT
- /* One of REG_UNAVAILABLE or REG_VALID. */
- unsigned char *register_status = nullptr;
- #endif
- /* See gdbsupport/common-regcache.h. */
- enum register_status get_register_status (int regnum) const override;
- /* See gdbsupport/common-regcache.h. */
- void raw_supply (int regnum, const void *buf) override;
- /* See gdbsupport/common-regcache.h. */
- void raw_collect (int regnum, void *buf) const override;
- /* See gdbsupport/common-regcache.h. */
- bool raw_compare (int regnum, const void *buf, int offset) const override;
- };
- struct regcache *init_register_cache (struct regcache *regcache,
- const struct target_desc *tdesc,
- unsigned char *regbuf);
- void regcache_cpy (struct regcache *dst, struct regcache *src);
- /* Create a new register cache for INFERIOR. */
- struct regcache *new_register_cache (const struct target_desc *tdesc);
- struct regcache *get_thread_regcache (struct thread_info *thread, int fetch);
- /* Release all memory associated with the register cache for INFERIOR. */
- void free_register_cache (struct regcache *regcache);
- /* Invalidate cached registers for one thread. */
- void regcache_invalidate_thread (struct thread_info *);
- /* Invalidate cached registers for all threads of the given process. */
- void regcache_invalidate_pid (int pid);
- /* Invalidate cached registers for all threads of the current
- process. */
- void regcache_invalidate (void);
- /* Invalidate and release the register cache of all threads of the
- current process. */
- void regcache_release (void);
- /* Convert all registers to a string in the currently specified remote
- format. */
- void registers_to_string (struct regcache *regcache, char *buf);
- /* Convert a string to register values and fill our register cache. */
- void registers_from_string (struct regcache *regcache, char *buf);
- /* For regcache_read_pc see gdbsupport/common-regcache.h. */
- void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
- int register_cache_size (const struct target_desc *tdesc);
- int register_size (const struct target_desc *tdesc, int n);
- int find_regno (const struct target_desc *tdesc, const char *name);
- void supply_register (struct regcache *regcache, int n, const void *buf);
- void supply_register_zeroed (struct regcache *regcache, int n);
- void supply_register_by_name (struct regcache *regcache,
- const char *name, const void *buf);
- void supply_register_by_name_zeroed (struct regcache *regcache,
- const char *name);
- void supply_regblock (struct regcache *regcache, const void *buf);
- void collect_register (struct regcache *regcache, int n, void *buf);
- void collect_register_as_string (struct regcache *regcache, int n, char *buf);
- void collect_register_by_name (struct regcache *regcache,
- const char *name, void *buf);
- /* Read a raw register as an unsigned integer. Convenience wrapper
- around regcache_raw_get_unsigned that takes a register name instead
- of a register number. */
- ULONGEST regcache_raw_get_unsigned_by_name (struct regcache *regcache,
- const char *name);
- #endif /* GDBSERVER_REGCACHE_H */
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