1 /* Target-dependent code for X86-based targets.
3 Copyright (C) 2018-2023 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 /* Check whether NAME is included in NAMES[LO] (inclusive) to NAMES[HI]
29 x86_is_thunk_register_name (const char *name
, const char * const *names
,
33 for (reg
= lo
; reg
< hi
; ++reg
)
34 if (strcmp (name
, names
[reg
]) == 0)
43 x86_in_indirect_branch_thunk (CORE_ADDR pc
, const char * const *register_names
,
46 struct bound_minimal_symbol bmfun
= lookup_minimal_symbol_by_pc (pc
);
47 if (bmfun
.minsym
== nullptr)
50 const char *name
= bmfun
.minsym
->linkage_name ();
54 /* Check the indirect return thunk first. */
55 if (strcmp (name
, "__x86_return_thunk") == 0)
58 /* Then check a family of indirect call/jump thunks. */
59 static const char thunk
[] = "__x86_indirect_thunk";
60 static const size_t length
= sizeof (thunk
) - 1;
61 if (strncmp (name
, thunk
, length
) != 0)
64 /* If that's the complete name, we're in the memory thunk. */
69 /* Check for suffixes. */
73 if (x86_is_thunk_register_name (name
, register_names
, lo
, hi
))