mirror of
https://sourceware.org/git/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/* Cache and manage the values of registers
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Copyright (C) 2014-2024 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 COMMON_COMMON_REGCACHE_H
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#define COMMON_COMMON_REGCACHE_H
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struct reg_buffer_common;
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/* This header is a stopgap until we have an independent regcache. */
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enum register_status : signed char
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{
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/* The register value is not in the cache, and we don't know yet
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whether it's available in the target (or traceframe). */
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REG_UNKNOWN = 0,
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/* The register value is valid and cached. */
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REG_VALID = 1,
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/* The register value is unavailable. E.g., we're inspecting a
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traceframe, and this register wasn't collected. Note that this
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is different a different "unavailable" from saying the register
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does not exist in the target's architecture --- in that case,
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the target should have given us a target description that does
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not include the register in the first place. */
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REG_UNAVAILABLE = -1
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};
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/* Return a pointer to the register cache associated with the
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thread specified by PTID. This function must be provided by
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the client. */
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extern reg_buffer_common *get_thread_regcache_for_ptid (ptid_t ptid);
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/* Return the size of register numbered N in REGCACHE. This function
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must be provided by the client. */
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extern int regcache_register_size (const reg_buffer_common *regcache, int n);
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/* Read the PC register. This function must be provided by the
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client. */
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extern CORE_ADDR regcache_read_pc (reg_buffer_common *regcache);
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/* Read the PC register. If PC cannot be read, return 0.
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This is a wrapper around 'regcache_read_pc'. */
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extern CORE_ADDR regcache_read_pc_protected (reg_buffer_common *regcache);
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/* Read a raw register into a unsigned integer. */
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extern enum register_status
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regcache_raw_read_unsigned (reg_buffer_common *regcache, int regnum,
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ULONGEST *val);
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ULONGEST regcache_raw_get_unsigned (reg_buffer_common *regcache, int regnum);
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struct reg_buffer_common
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{
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virtual ~reg_buffer_common () = default;
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/* Get the availability status of the value of register REGNUM in this
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buffer. */
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virtual register_status get_register_status (int regnum) const = 0;
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/* Supply register REGNUM, whose contents are stored in SRC, to this register
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buffer. */
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virtual void raw_supply (int regnum, gdb::array_view<const gdb_byte> src)
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= 0;
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void raw_supply (int regnum, const uint64_t *src)
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{
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raw_supply (regnum,
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gdb::make_array_view ((const gdb_byte *) src, sizeof (*src)));
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}
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void raw_supply (int regnum, const gdb_byte *src)
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{
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raw_supply (regnum,
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gdb::make_array_view (src,
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regcache_register_size (this, regnum)));
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}
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/* Collect register REGNUM from this register buffer and store its contents in
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DST. */
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virtual void raw_collect (int regnum, gdb::array_view<gdb_byte> dst) const
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= 0;
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void raw_collect (int regnum, uint64_t *dst) const
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{
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raw_collect (regnum,
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gdb::make_array_view ((gdb_byte *) dst, sizeof (*dst)));
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};
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void raw_collect (int regnum, gdb_byte *dst)
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{
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raw_collect (regnum,
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gdb::make_array_view (dst,
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regcache_register_size (this, regnum)));
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}
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/* Compare the contents of the register stored in the regcache (ignoring the
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first OFFSET bytes) to the contents of BUF (without any offset). Returns
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true if the same. */
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virtual bool raw_compare (int regnum, const void *buf, int offset) const = 0;
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};
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#endif /* COMMON_COMMON_REGCACHE_H */
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