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c1bd443b4d
This patch adds a target description and feature "mte" for aarch64. It includes one new register, tag_ctl, that can be used to configure the tag generation rules and sync/async modes. It is 64-bit in size. The patch also adjusts the code that creates the target descriptions at runtime based on CPU feature checks. gdb/ChangeLog: 2021-03-24 Luis Machado <luis.machado@linaro.org> * aarch64-linux-nat.c (aarch64_linux_nat_target::read_description): Take MTE flag into account. Slight refactor to hwcap flag checking. * aarch64-linux-tdep.c (aarch64_linux_core_read_description): Likewise. * aarch64-tdep.c (tdesc_aarch64_list): Add one more dimension for MTE. (aarch64_read_description): Add mte_p parameter and update to use it. Update the documentation. (aarch64_gdbarch_init): Update call to aarch64_read_description. * aarch64-tdep.h (aarch64_read_description): Add mte_p parameter. * arch/aarch64.c: Include ../features/aarch64-mte.c. (aarch64_create_target_description): Add mte_p parameter and update the code to use it. * arch/aarch64.h (aarch64_create_target_description): Add mte_p parameter. * features/Makefile (FEATURE_XMLFILES): Add aarch64-mte.xml. * features/aarch64-mte.c: New file, generated. * features/aarch64-mte.xml: New file. gdbserver/ChangeLog: 2021-03-24 Luis Machado <luis.machado@linaro.org> * linux-aarch64-ipa.cc (get_ipa_tdesc): Update call to aarch64_linux_read_description. (initialize_low_tracepoint): Likewise. * linux-aarch64-low.cc (aarch64_target::low_arch_setup): Take MTE flag into account. * linux-aarch64-tdesc.cc (tdesc_aarch64_list): Add one more dimension for MTE. (aarch64_linux_read_description): Add mte_p parameter and update to use it. * linux-aarch64-tdesc.h (aarch64_linux_read_description): Add mte_p parameter.
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/* GNU/Linux/aarch64 specific target description, for the remote server
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for GDB.
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Copyright (C) 2017-2021 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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#include "server.h"
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#include "linux-aarch64-tdesc.h"
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#include "tdesc.h"
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#include "arch/aarch64.h"
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#include "linux-aarch32-low.h"
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#include <inttypes.h>
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/* All possible aarch64 target descriptors. */
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struct target_desc *tdesc_aarch64_list[AARCH64_MAX_SVE_VQ + 1][2/*pauth*/][2 /* mte */];
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/* Create the aarch64 target description. */
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const target_desc *
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aarch64_linux_read_description (uint64_t vq, bool pauth_p, bool mte_p)
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{
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if (vq > AARCH64_MAX_SVE_VQ)
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error (_("VQ is %" PRIu64 ", maximum supported value is %d"), vq,
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AARCH64_MAX_SVE_VQ);
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struct target_desc *tdesc = tdesc_aarch64_list[vq][pauth_p][mte_p];
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if (tdesc == NULL)
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{
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tdesc = aarch64_create_target_description (vq, pauth_p, mte_p);
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static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL };
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static const char *expedite_regs_aarch64_sve[] = { "x29", "sp", "pc",
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"vg", NULL };
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if (vq == 0)
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init_target_desc (tdesc, expedite_regs_aarch64);
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else
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init_target_desc (tdesc, expedite_regs_aarch64_sve);
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tdesc_aarch64_list[vq][pauth_p][mte_p] = tdesc;
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}
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return tdesc;
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}
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