mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
6dc0ebde59
Pointer Authentication is a new feature in AArch64 v8.3-a. When enabled in the compiler, function return addresses will be mangled by the kernel. Add register description xml and wire up to aarch64_linux_read_description. This description includes the two pauth user registers. Nothing yet uses the feature - that is added in later patches. gdb/ChangeLog: * aarch64-linux-nat.c (aarch64_linux_nat_target::read_description): Add pauth param. * aarch64-linux-tdep.c (aarch64_linux_core_read_description): Likewise. * aarch64-tdep.c (struct target_desc): Add in pauth. (aarch64_read_description): Add pauth param. (aarch64_gdbarch_init): Likewise. * aarch64-tdep.h (aarch64_read_description): Likewise. * arch/aarch64.c (aarch64_create_target_description): Likewise. * arch/aarch64.h (aarch64_create_target_description): Likewise. * features/Makefile: Add new files. * features/aarch64-pauth.c: New file. * features/aarch64-pauth.xml: New file. gdb/doc/ChangeLog: * gdb.texinfo: Describe pauth feature. gdb/gdbserver/ChangeLog: * linux-aarch64-ipa.c (get_ipa_tdesc): Add pauth param. (initialize_low_tracepoint): Likewise. * linux-aarch64-low.c (aarch64_arch_setup): Likewise. * linux-aarch64-tdesc-selftest.c (aarch64_tdesc_test): Likewise. * linux-aarch64-tdesc.c (struct target_desc): Likewise. (aarch64_linux_read_description): Likewise. * linux-aarch64-tdesc.h (aarch64_linux_read_description): Likewise.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* GNU/Linux/aarch64 specific target description, for the remote server
|
|
for GDB.
|
|
Copyright (C) 2017-2019 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "server.h"
|
|
#include "tdesc.h"
|
|
#include "arch/aarch64.h"
|
|
#include "linux-aarch32-low.h"
|
|
#include <inttypes.h>
|
|
|
|
/* All possible aarch64 target descriptors. */
|
|
struct target_desc *tdesc_aarch64_list[AARCH64_MAX_SVE_VQ + 1][2/*pauth*/];
|
|
|
|
/* Create the aarch64 target description. */
|
|
|
|
const target_desc *
|
|
aarch64_linux_read_description (uint64_t vq, bool pauth_p)
|
|
{
|
|
if (vq > AARCH64_MAX_SVE_VQ)
|
|
error (_("VQ is %" PRIu64 ", maximum supported value is %d"), vq,
|
|
AARCH64_MAX_SVE_VQ);
|
|
|
|
struct target_desc *tdesc = tdesc_aarch64_list[vq][pauth_p];
|
|
|
|
if (tdesc == NULL)
|
|
{
|
|
tdesc = aarch64_create_target_description (vq, pauth_p);
|
|
|
|
static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL };
|
|
static const char *expedite_regs_aarch64_sve[] = { "x29", "sp", "pc",
|
|
"vg", NULL };
|
|
|
|
if (vq == 0)
|
|
init_target_desc (tdesc, expedite_regs_aarch64);
|
|
else
|
|
init_target_desc (tdesc, expedite_regs_aarch64_sve);
|
|
|
|
tdesc_aarch64_list[vq][pauth_p] = tdesc;
|
|
}
|
|
|
|
return tdesc;
|
|
}
|