Accept and ignore the R_BPF_64_NODLYD32 relocation.
[binutils-gdb.git] / gdb / x86-tdep.c
blob6a73f2177c93a52653c62780d517b8c6c486fb59
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/>. */
20 #include "defs.h"
21 #include "x86-tdep.h"
22 #include "symtab.h"
25 /* Check whether NAME is included in NAMES[LO] (inclusive) to NAMES[HI]
26 (exclusive). */
28 static bool
29 x86_is_thunk_register_name (const char *name, const char * const *names,
30 int lo, int hi)
32 int reg;
33 for (reg = lo; reg < hi; ++reg)
34 if (strcmp (name, names[reg]) == 0)
35 return true;
37 return false;
40 /* See x86-tdep.h. */
42 bool
43 x86_in_indirect_branch_thunk (CORE_ADDR pc, const char * const *register_names,
44 int lo, int hi)
46 struct bound_minimal_symbol bmfun = lookup_minimal_symbol_by_pc (pc);
47 if (bmfun.minsym == nullptr)
48 return false;
50 const char *name = bmfun.minsym->linkage_name ();
51 if (name == nullptr)
52 return false;
54 /* Check the indirect return thunk first. */
55 if (strcmp (name, "__x86_return_thunk") == 0)
56 return true;
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)
62 return false;
64 /* If that's the complete name, we're in the memory thunk. */
65 name += length;
66 if (*name == '\0')
67 return true;
69 /* Check for suffixes. */
70 if (*name++ != '_')
71 return false;
73 if (x86_is_thunk_register_name (name, register_names, lo, hi))
74 return true;
76 return false;