1 /* GNU/Linux/aarch64 specific target description, for the remote server
2 for GDB.
3 Copyright (C) 2017-2021 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
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.
11
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.
16
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/>. */
19
20 #include "server.h"
21
22 #include "linux-aarch64-tdesc.h"
23
24 #include "tdesc.h"
25 #include "arch/aarch64.h"
26 #include "linux-aarch32-low.h"
27 #include <inttypes.h>
28
29 /* All possible aarch64 target descriptors. */
30 struct target_desc *tdesc_aarch64_list[AARCH64_MAX_SVE_VQ + 1][2/*pauth*/][2 /* mte */];
31
32 /* Create the aarch64 target description. */
33
34 const target_desc *
aarch64_linux_read_description(uint64_t vq,bool pauth_p,bool mte_p)35 aarch64_linux_read_description (uint64_t vq, bool pauth_p, bool mte_p)
36 {
37 if (vq > AARCH64_MAX_SVE_VQ)
38 error (_("VQ is %" PRIu64 ", maximum supported value is %d"), vq,
39 AARCH64_MAX_SVE_VQ);
40
41 struct target_desc *tdesc = tdesc_aarch64_list[vq][pauth_p][mte_p];
42
43 if (tdesc == NULL)
44 {
45 tdesc = aarch64_create_target_description (vq, pauth_p, mte_p);
46
47 static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL };
48 static const char *expedite_regs_aarch64_sve[] = { "x29", "sp", "pc",
49 "vg", NULL };
50
51 if (vq == 0)
52 init_target_desc (tdesc, expedite_regs_aarch64);
53 else
54 init_target_desc (tdesc, expedite_regs_aarch64_sve);
55
56 tdesc_aarch64_list[vq][pauth_p][mte_p] = tdesc;
57 }
58
59 return tdesc;
60 }
61