gdb: LoongArch: Add initial target description support
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>
This commit is contained in:
Tiezhu Yang
parent
7c1aa0090f
commit
e74d08100d
88
gdb/arch/loongarch.c
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88
gdb/arch/loongarch.c
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@ -0,0 +1,88 @@
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/* Copyright (C) 2022 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 "gdbsupport/common-defs.h"
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#include "loongarch.h"
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#include <stdlib.h>
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#include <unordered_map>
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/* Target description features. */
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#include "../features/loongarch/base32.c"
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#include "../features/loongarch/base64.c"
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static target_desc_up
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loongarch_create_target_description (const struct loongarch_gdbarch_features features)
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{
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/* Now we should create a new target description. */
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target_desc_up tdesc = allocate_target_description ();
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std::string arch_name = "loongarch";
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if (features.xlen == 4)
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arch_name.append ("32");
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else if (features.xlen == 8)
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arch_name.append ("64");
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set_tdesc_architecture (tdesc.get (), arch_name.c_str ());
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long regnum = 0;
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/* For now we only support creating 32-bit or 64-bit x-registers. */
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if (features.xlen == 4)
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regnum = create_feature_loongarch_base32 (tdesc.get (), regnum);
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else if (features.xlen == 8)
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regnum = create_feature_loongarch_base64 (tdesc.get (), regnum);
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return tdesc;
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}
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/* Wrapper used by std::unordered_map to generate hash for feature set. */
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struct loongarch_gdbarch_features_hasher
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{
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std::size_t
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operator() (const loongarch_gdbarch_features &features) const noexcept
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{
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return features.hash ();
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}
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};
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/* Cache of previously seen target descriptions, indexed by the feature set
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that created them. */
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static std::unordered_map<loongarch_gdbarch_features,
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const target_desc_up,
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loongarch_gdbarch_features_hasher> loongarch_tdesc_cache;
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const target_desc *
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loongarch_lookup_target_description (const struct loongarch_gdbarch_features features)
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{
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/* Lookup in the cache. If we find it then return the pointer out of
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the target_desc_up (which is a unique_ptr). This is safe as the
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loongarch_tdesc_cache will exist until GDB exits. */
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const auto it = loongarch_tdesc_cache.find (features);
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if (it != loongarch_tdesc_cache.end ())
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return it->second.get ();
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target_desc_up tdesc (loongarch_create_target_description (features));
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/* Add to the cache, and return a pointer borrowed from the
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target_desc_up. This is safe as the cache (and the pointers
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contained within it) are not deleted until GDB exits. */
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target_desc *ptr = tdesc.get ();
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loongarch_tdesc_cache.emplace (features, std::move (tdesc));
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return ptr;
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}
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73
gdb/arch/loongarch.h
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73
gdb/arch/loongarch.h
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@ -0,0 +1,73 @@
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/* Common target-dependent functionality for LoongArch
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Copyright (C) 2022 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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#ifndef ARCH_LOONGARCH_H
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#define ARCH_LOONGARCH_H
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#include "gdbsupport/tdesc.h"
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/* The set of LoongArch architectural features that we track that impact how
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we configure the actual gdbarch instance. We hold one of these in the
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gdbarch_tdep structure, and use it to distinguish between different
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LoongArch gdbarch instances.
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The information in here ideally comes from the target description,
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however, if the target doesn't provide a target description then we will
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create a default target description by first populating one of these
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based on what we know about the binary being executed, and using that to
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drive default target description creation. */
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struct loongarch_gdbarch_features
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{
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/* The size of the x-registers in bytes. This is either 4 (loongarch32)
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or 8 (loongarch64). No other value is valid. Initialise to the invalid
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0 value so we can spot if one of these is used uninitialised. */
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int xlen = 0;
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/* Equality operator. */
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bool operator== (const struct loongarch_gdbarch_features &rhs) const
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{
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return (xlen == rhs.xlen);
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}
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/* Inequality operator. */
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bool operator!= (const struct loongarch_gdbarch_features &rhs) const
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{
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return !((*this) == rhs);
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}
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/* Used by std::unordered_map to hash feature sets. */
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std::size_t hash () const noexcept
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{
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std::size_t val = (xlen & 0x1f) << 5;
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return val;
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}
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};
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/* Lookup an already existing target description matching FEATURES, or
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create a new target description if this is the first time we have seen
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FEATURES. For the same FEATURES the same target_desc is always
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returned. This is important when trying to lookup gdbarch objects as
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GDBARCH_LIST_LOOKUP_BY_INFO performs a pointer comparison on target
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descriptions to find candidate gdbarch objects. */
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const target_desc *loongarch_lookup_target_description
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(const struct loongarch_gdbarch_features features);
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#endif /* ARCH_LOONGARCH_H */
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@ -46293,6 +46293,7 @@ registers using the capitalization used in the description.
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* ARC Features::
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* ARM Features::
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* i386 Features::
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* LoongArch Features::
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* MicroBlaze Features::
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* MIPS Features::
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* M68K Features::
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@ -46521,6 +46522,15 @@ The @samp{org.gnu.gdb.i386.pkeys} feature is optional. It should
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describe a single register, @samp{pkru}. It is a 32-bit register
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valid for i386 and amd64.
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@node LoongArch Features
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@subsection LoongArch Features
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@cindex target descriptions, LoongArch Features
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The @samp{org.gnu.gdb.loongarch.base} feature is required for LoongArch
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targets. It should contain the registers @samp{r0} through @samp{r31},
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@samp{pc}, and @samp{badv}. Either the architectural names (@samp{r0},
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@samp{r1}, etc) can be used, or the ABI names (@samp{zero}, @samp{ra}, etc).
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@node MicroBlaze Features
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@subsection MicroBlaze Features
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@cindex target descriptions, MicroBlaze features
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47
gdb/features/loongarch/base32.c
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47
gdb/features/loongarch/base32.c
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@ -0,0 +1,47 @@
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/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
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Original: base32.xml */
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#include "gdbsupport/tdesc.h"
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static int
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create_feature_loongarch_base32 (struct target_desc *result, long regnum)
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{
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struct tdesc_feature *feature;
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feature = tdesc_create_feature (result, "org.gnu.gdb.loongarch.base");
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tdesc_create_reg (feature, "r0", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r1", regnum++, 1, "general", 32, "code_ptr");
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tdesc_create_reg (feature, "r2", regnum++, 1, "general", 32, "data_ptr");
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tdesc_create_reg (feature, "r3", regnum++, 1, "general", 32, "data_ptr");
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tdesc_create_reg (feature, "r4", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r5", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r6", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r7", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r8", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r9", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r10", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r11", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r12", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r13", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r14", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r15", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r16", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r17", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r18", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r19", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r20", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r21", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r22", regnum++, 1, "general", 32, "data_ptr");
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tdesc_create_reg (feature, "r23", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r24", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r25", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r26", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r27", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r28", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r29", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r30", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "r31", regnum++, 1, "general", 32, "uint32");
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tdesc_create_reg (feature, "pc", regnum++, 1, "general", 32, "code_ptr");
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tdesc_create_reg (feature, "badv", regnum++, 1, "general", 32, "code_ptr");
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return regnum;
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}
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44
gdb/features/loongarch/base32.xml
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44
gdb/features/loongarch/base32.xml
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@ -0,0 +1,44 @@
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<?xml version="1.0"?>
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<!-- Copyright (C) 2022 Free Software Foundation, Inc.
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved. -->
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<!DOCTYPE feature SYSTEM "gdb-target.dtd">
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<feature name="org.gnu.gdb.loongarch.base">
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<reg name="r0" bitsize="32" type="uint32" group="general"/>
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<reg name="r1" bitsize="32" type="code_ptr" group="general"/>
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<reg name="r2" bitsize="32" type="data_ptr" group="general"/>
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<reg name="r3" bitsize="32" type="data_ptr" group="general"/>
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<reg name="r4" bitsize="32" type="uint32" group="general"/>
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<reg name="r5" bitsize="32" type="uint32" group="general"/>
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<reg name="r6" bitsize="32" type="uint32" group="general"/>
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<reg name="r7" bitsize="32" type="uint32" group="general"/>
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<reg name="r8" bitsize="32" type="uint32" group="general"/>
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<reg name="r9" bitsize="32" type="uint32" group="general"/>
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<reg name="r10" bitsize="32" type="uint32" group="general"/>
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<reg name="r11" bitsize="32" type="uint32" group="general"/>
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<reg name="r12" bitsize="32" type="uint32" group="general"/>
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<reg name="r13" bitsize="32" type="uint32" group="general"/>
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<reg name="r14" bitsize="32" type="uint32" group="general"/>
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<reg name="r15" bitsize="32" type="uint32" group="general"/>
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<reg name="r16" bitsize="32" type="uint32" group="general"/>
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<reg name="r17" bitsize="32" type="uint32" group="general"/>
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<reg name="r18" bitsize="32" type="uint32" group="general"/>
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<reg name="r19" bitsize="32" type="uint32" group="general"/>
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<reg name="r20" bitsize="32" type="uint32" group="general"/>
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<reg name="r21" bitsize="32" type="uint32" group="general"/>
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<reg name="r22" bitsize="32" type="data_ptr" group="general"/>
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<reg name="r23" bitsize="32" type="uint32" group="general"/>
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<reg name="r24" bitsize="32" type="uint32" group="general"/>
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<reg name="r25" bitsize="32" type="uint32" group="general"/>
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<reg name="r26" bitsize="32" type="uint32" group="general"/>
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<reg name="r27" bitsize="32" type="uint32" group="general"/>
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<reg name="r28" bitsize="32" type="uint32" group="general"/>
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<reg name="r29" bitsize="32" type="uint32" group="general"/>
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<reg name="r30" bitsize="32" type="uint32" group="general"/>
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<reg name="r31" bitsize="32" type="uint32" group="general"/>
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<reg name="pc" bitsize="32" type="code_ptr" group="general"/>
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<reg name="badv" bitsize="32" type="code_ptr" group="general"/>
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</feature>
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47
gdb/features/loongarch/base64.c
Normal file
47
gdb/features/loongarch/base64.c
Normal file
@ -0,0 +1,47 @@
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/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
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Original: base64.xml */
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#include "gdbsupport/tdesc.h"
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static int
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create_feature_loongarch_base64 (struct target_desc *result, long regnum)
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{
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struct tdesc_feature *feature;
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feature = tdesc_create_feature (result, "org.gnu.gdb.loongarch.base");
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tdesc_create_reg (feature, "r0", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r1", regnum++, 1, "general", 64, "code_ptr");
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tdesc_create_reg (feature, "r2", regnum++, 1, "general", 64, "data_ptr");
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tdesc_create_reg (feature, "r3", regnum++, 1, "general", 64, "data_ptr");
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tdesc_create_reg (feature, "r4", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r5", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r6", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r7", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r8", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r9", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r10", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r11", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r12", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r13", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r14", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r15", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r16", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r17", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r18", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r19", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r20", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r21", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r22", regnum++, 1, "general", 64, "data_ptr");
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tdesc_create_reg (feature, "r23", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r24", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r25", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r26", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r27", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r28", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r29", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r30", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "r31", regnum++, 1, "general", 64, "uint64");
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tdesc_create_reg (feature, "pc", regnum++, 1, "general", 64, "code_ptr");
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tdesc_create_reg (feature, "badv", regnum++, 1, "general", 64, "code_ptr");
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return regnum;
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}
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44
gdb/features/loongarch/base64.xml
Normal file
44
gdb/features/loongarch/base64.xml
Normal file
@ -0,0 +1,44 @@
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<?xml version="1.0"?>
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<!-- Copyright (C) 2022 Free Software Foundation, Inc.
|
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|
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Copying and distribution of this file, with or without modification,
|
||||
are permitted in any medium without royalty provided the copyright
|
||||
notice and this notice are preserved. -->
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<!DOCTYPE feature SYSTEM "gdb-target.dtd">
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<feature name="org.gnu.gdb.loongarch.base">
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<reg name="r0" bitsize="64" type="uint64" group="general"/>
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<reg name="r1" bitsize="64" type="code_ptr" group="general"/>
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<reg name="r2" bitsize="64" type="data_ptr" group="general"/>
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<reg name="r3" bitsize="64" type="data_ptr" group="general"/>
|
||||
<reg name="r4" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r5" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r6" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r7" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r8" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r9" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r10" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r11" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r12" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r13" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r14" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r15" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r16" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r17" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r18" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r19" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r20" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r21" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r22" bitsize="64" type="data_ptr" group="general"/>
|
||||
<reg name="r23" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r24" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r25" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r26" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r27" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r28" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r29" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r30" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="r31" bitsize="64" type="uint64" group="general"/>
|
||||
<reg name="pc" bitsize="64" type="code_ptr" group="general"/>
|
||||
<reg name="badv" bitsize="64" type="code_ptr" group="general"/>
|
||||
</feature>
|
||||
Loading…
x
Reference in New Issue
Block a user