mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-23 18:14:13 +08:00
b782c65ba1
This commit moves aarch64_linux_memtag_matches_p,
aarch64_linux_set_memtags, aarch64_linux_get_memtag, and
aarch64_linux_memtag_to_string hooks (plus the aarch64_mte_get_atag
function used by them), along with the setting of the memtag granule
size, from aarch64-linux-tdep.c to aarch64-tdep.c, making MTE available
on baremetal targets. Since the aarch64-linux-tdep.c layer inherits
these hooks from aarch64-tdep.c, there is no effective change for
aarch64-linux targets.
Helpers used both by aarch64-tdep.c and by aarch64-linux-tdep.c were
moved from arch/aarch64-mte-linux.{c,h} to new arch/aarch64-mte.{c,h}
files.
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Tested-By: Luis Machado <luis.machado@arm.com>
Approved-By: Luis Machado <luis.machado@arm.com>
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/* Common AArch64 functionality for MTE
|
|
|
|
Copyright (C) 2021-2024 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 "arch/aarch64-mte.h"
|
|
|
|
/* See arch/aarch64-mte.h */
|
|
|
|
size_t
|
|
aarch64_mte_get_tag_granules (CORE_ADDR addr, size_t len, size_t granule_size)
|
|
{
|
|
/* An empty range has 0 tag granules. */
|
|
if (len == 0)
|
|
return 0;
|
|
|
|
/* Start address */
|
|
CORE_ADDR s_addr = align_down (addr, granule_size);
|
|
/* End address */
|
|
CORE_ADDR e_addr = align_down (addr + len - 1, granule_size);
|
|
|
|
/* We always have at least 1 granule because len is non-zero at this
|
|
point. */
|
|
return 1 + (e_addr - s_addr) / granule_size;
|
|
}
|
|
|
|
/* See arch/aarch64-mte.h */
|
|
|
|
CORE_ADDR
|
|
aarch64_mte_make_ltag_bits (CORE_ADDR value)
|
|
{
|
|
return value & AARCH64_MTE_LOGICAL_MAX_VALUE;
|
|
}
|
|
|
|
/* See arch/aarch64-mte.h */
|
|
|
|
CORE_ADDR
|
|
aarch64_mte_make_ltag (CORE_ADDR value)
|
|
{
|
|
return (aarch64_mte_make_ltag_bits (value)
|
|
<< AARCH64_MTE_LOGICAL_TAG_START_BIT);
|
|
}
|
|
|
|
/* See arch/aarch64-mte.h */
|
|
|
|
CORE_ADDR
|
|
aarch64_mte_set_ltag (CORE_ADDR address, CORE_ADDR tag)
|
|
{
|
|
/* Remove the existing tag. */
|
|
address &= ~aarch64_mte_make_ltag (AARCH64_MTE_LOGICAL_MAX_VALUE);
|
|
|
|
/* Return the new tagged address. */
|
|
return address | aarch64_mte_make_ltag (tag);
|
|
}
|
|
|
|
/* See arch/aarch64-mte.h */
|
|
|
|
CORE_ADDR
|
|
aarch64_mte_get_ltag (CORE_ADDR address)
|
|
{
|
|
CORE_ADDR ltag_addr = address >> AARCH64_MTE_LOGICAL_TAG_START_BIT;
|
|
return aarch64_mte_make_ltag_bits (ltag_addr);
|
|
}
|