mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
e74d08100d
This commit adds initial target description support for LoongArch. Signed-off-by: Zhensong Liu <liuzhensong@loongson.cn> Signed-off-by: Qing zhang <zhangqing@loongson.cn> Signed-off-by: Youling Tang <tangyouling@loongson.cn> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/* Common target-dependent functionality for LoongArch
|
|
|
|
Copyright (C) 2022 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/>. */
|
|
|
|
#ifndef ARCH_LOONGARCH_H
|
|
#define ARCH_LOONGARCH_H
|
|
|
|
#include "gdbsupport/tdesc.h"
|
|
|
|
/* The set of LoongArch architectural features that we track that impact how
|
|
we configure the actual gdbarch instance. We hold one of these in the
|
|
gdbarch_tdep structure, and use it to distinguish between different
|
|
LoongArch gdbarch instances.
|
|
|
|
The information in here ideally comes from the target description,
|
|
however, if the target doesn't provide a target description then we will
|
|
create a default target description by first populating one of these
|
|
based on what we know about the binary being executed, and using that to
|
|
drive default target description creation. */
|
|
|
|
struct loongarch_gdbarch_features
|
|
{
|
|
/* The size of the x-registers in bytes. This is either 4 (loongarch32)
|
|
or 8 (loongarch64). No other value is valid. Initialise to the invalid
|
|
0 value so we can spot if one of these is used uninitialised. */
|
|
int xlen = 0;
|
|
|
|
/* Equality operator. */
|
|
bool operator== (const struct loongarch_gdbarch_features &rhs) const
|
|
{
|
|
return (xlen == rhs.xlen);
|
|
}
|
|
|
|
/* Inequality operator. */
|
|
bool operator!= (const struct loongarch_gdbarch_features &rhs) const
|
|
{
|
|
return !((*this) == rhs);
|
|
}
|
|
|
|
/* Used by std::unordered_map to hash feature sets. */
|
|
std::size_t hash () const noexcept
|
|
{
|
|
std::size_t val = (xlen & 0x1f) << 5;
|
|
return val;
|
|
}
|
|
};
|
|
|
|
/* Lookup an already existing target description matching FEATURES, or
|
|
create a new target description if this is the first time we have seen
|
|
FEATURES. For the same FEATURES the same target_desc is always
|
|
returned. This is important when trying to lookup gdbarch objects as
|
|
GDBARCH_LIST_LOOKUP_BY_INFO performs a pointer comparison on target
|
|
descriptions to find candidate gdbarch objects. */
|
|
|
|
const target_desc *loongarch_lookup_target_description
|
|
(const struct loongarch_gdbarch_features features);
|
|
|
|
#endif /* ARCH_LOONGARCH_H */
|