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a4a5f05266
In gdb/aarch64-linux-tdep.c we find:
...
gdb::byte_vector za_zeroed (za_bytes, 0);
regcache->raw_supply (tdep->sme_za_regnum, za_zeroed);
...
We can't use reg_buffer::raw_supply_zeroed here because only part of the
register is written.
Add raw_supply_part_zeroed, and use it instead.
Likewise elsewhere in AArch64 tdep code.
Tested on aarch64-linux.
Approved-By: Luis Machado <luis.machado@arm.com>
150 lines
5.0 KiB
C++
150 lines
5.0 KiB
C++
/* Register support routines for the remote server for GDB.
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Copyright (C) 2001-2024 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 GDBSERVER_REGCACHE_H
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#define GDBSERVER_REGCACHE_H
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#include "gdbsupport/common-regcache.h"
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struct thread_info;
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struct target_desc;
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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 : public reg_buffer_common
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{
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/* The regcache's target description. */
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const struct target_desc *tdesc = nullptr;
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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 = 0;
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int registers_owned = 0;
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unsigned char *registers = nullptr;
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#ifndef IN_PROCESS_AGENT
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/* One of REG_UNAVAILABLE or REG_VALID. */
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unsigned char *register_status = nullptr;
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#endif
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/* See gdbsupport/common-regcache.h. */
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enum register_status get_register_status (int regnum) const override;
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/* See gdbsupport/common-regcache.h. */
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void raw_supply (int regnum, gdb::array_view<const gdb_byte> src) override;
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/* See gdbsupport/common-regcache.h. */
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void raw_supply_part_zeroed (int regnum, int offset, size_t size) override;
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/* See gdbsupport/common-regcache.h. */
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void raw_collect (int regnum, gdb::array_view<gdb_byte> dst) const override;
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/* See gdbsupport/common-regcache.h. */
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bool raw_compare (int regnum, const void *buf, int offset) const override;
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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 given process. */
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void regcache_invalidate_pid (int pid);
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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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/* For regcache_read_pc see gdbsupport/common-regcache.h. */
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void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
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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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/* No throw version of find_regno. If NAME is not a known register, return
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an empty value. */
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std::optional<int> find_regno_no_throw (const struct target_desc *tdesc,
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const char *name);
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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_register_by_name_zeroed (struct regcache *regcache,
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const char *name);
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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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/* Read a raw register as an unsigned integer. Convenience wrapper
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around regcache_raw_get_unsigned that takes a register name instead
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of a register number. */
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ULONGEST regcache_raw_get_unsigned_by_name (struct regcache *regcache,
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const char *name);
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#endif /* GDBSERVER_REGCACHE_H */
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