[Lldb-commits] [lldb] fa45650 - [lldb] [gdb-remote] Refactor getting remote regs to use local vector
Michał Górny via lldb-commits
lldb-commits at lists.llvm.org
Thu Sep 23 11:02:06 PDT 2021
Author: Michał Górny
Date: 2021-09-23T20:02:00+02:00
New Revision: fa456505b80b0cf83647a1b26713e4d3b38eccc2
URL: https://github.com/llvm/llvm-project/commit/fa456505b80b0cf83647a1b26713e4d3b38eccc2
DIFF: https://github.com/llvm/llvm-project/commit/fa456505b80b0cf83647a1b26713e4d3b38eccc2.diff
LOG: [lldb] [gdb-remote] Refactor getting remote regs to use local vector
Refactor remote register getters to collect them into a local
std::vector rather than adding them straight into DynamicRegisterInfo.
The purpose of this change is to lay groundwork for switching value_regs
and invalidate_regs to use local LLDB register numbers rather than
remote numbers.
Differential Revision: https://reviews.llvm.org/D110025
Added:
Modified:
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
Removed:
################################################################################
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
index 7dd1f340cb331..304fda0bc6d83 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -454,7 +454,7 @@ void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) {
return;
char packet[128];
- uint32_t reg_offset = LLDB_INVALID_INDEX32;
+ std::vector<RemoteRegisterInfo> registers;
uint32_t reg_num = 0;
for (StringExtractorGDBRemote::ResponseType response_type =
StringExtractorGDBRemote::eResponse;
@@ -470,53 +470,25 @@ void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) {
if (response_type == StringExtractorGDBRemote::eResponse) {
llvm::StringRef name;
llvm::StringRef value;
- ConstString reg_name;
- ConstString alt_name;
- ConstString set_name;
- std::vector<uint32_t> value_regs;
- std::vector<uint32_t> invalidate_regs;
- std::vector<uint8_t> dwarf_opcode_bytes;
- RegisterInfo reg_info = {
- nullptr, // Name
- nullptr, // Alt name
- 0, // byte size
- reg_offset, // offset
- eEncodingUint, // encoding
- eFormatHex, // format
- {
- LLDB_INVALID_REGNUM, // eh_frame reg num
- LLDB_INVALID_REGNUM, // DWARF reg num
- LLDB_INVALID_REGNUM, // generic reg num
- reg_num, // process plugin reg num
- reg_num // native register number
- },
- nullptr,
- nullptr,
- nullptr, // Dwarf expression opcode bytes pointer
- 0 // Dwarf expression opcode bytes length
- };
+ RemoteRegisterInfo reg_info;
while (response.GetNameColonValue(name, value)) {
if (name.equals("name")) {
- reg_name.SetString(value);
+ reg_info.name.SetString(value);
} else if (name.equals("alt-name")) {
- alt_name.SetString(value);
+ reg_info.alt_name.SetString(value);
} else if (name.equals("bitsize")) {
- value.getAsInteger(0, reg_info.byte_size);
- reg_info.byte_size /= CHAR_BIT;
+ if (!value.getAsInteger(0, reg_info.byte_size))
+ reg_info.byte_size /= CHAR_BIT;
} else if (name.equals("offset")) {
- if (value.getAsInteger(0, reg_offset))
- reg_offset = UINT32_MAX;
+ value.getAsInteger(0, reg_info.byte_offset);
} else if (name.equals("encoding")) {
const Encoding encoding = Args::StringToEncoding(value);
if (encoding != eEncodingInvalid)
reg_info.encoding = encoding;
} else if (name.equals("format")) {
- Format format = eFormatInvalid;
- if (OptionArgParser::ToFormat(value.str().c_str(), format, nullptr)
+ if (!OptionArgParser::ToFormat(value.str().c_str(), reg_info.format, nullptr)
.Success())
- reg_info.format = format;
- else {
reg_info.format =
llvm::StringSwitch<Format>(value)
.Case("binary", eFormatBinary)
@@ -533,59 +505,34 @@ void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) {
.Case("vector-uint64", eFormatVectorOfUInt64)
.Case("vector-uint128", eFormatVectorOfUInt128)
.Default(eFormatInvalid);
- }
} else if (name.equals("set")) {
- set_name.SetString(value);
+ reg_info.set_name.SetString(value);
} else if (name.equals("gcc") || name.equals("ehframe")) {
- if (value.getAsInteger(0, reg_info.kinds[eRegisterKindEHFrame]))
- reg_info.kinds[eRegisterKindEHFrame] = LLDB_INVALID_REGNUM;
+ value.getAsInteger(0, reg_info.regnum_ehframe);
} else if (name.equals("dwarf")) {
- if (value.getAsInteger(0, reg_info.kinds[eRegisterKindDWARF]))
- reg_info.kinds[eRegisterKindDWARF] = LLDB_INVALID_REGNUM;
+ value.getAsInteger(0, reg_info.regnum_dwarf);
} else if (name.equals("generic")) {
- reg_info.kinds[eRegisterKindGeneric] =
- Args::StringToGenericRegister(value);
+ value.getAsInteger(0, reg_info.regnum_generic);
} else if (name.equals("container-regs")) {
- SplitCommaSeparatedRegisterNumberString(value, value_regs, 16);
+ SplitCommaSeparatedRegisterNumberString(value, reg_info.value_regs, 16);
} else if (name.equals("invalidate-regs")) {
- SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 16);
+ SplitCommaSeparatedRegisterNumberString(value, reg_info.invalidate_regs, 16);
} else if (name.equals("dynamic_size_dwarf_expr_bytes")) {
size_t dwarf_opcode_len = value.size() / 2;
assert(dwarf_opcode_len > 0);
- dwarf_opcode_bytes.resize(dwarf_opcode_len);
- reg_info.dynamic_size_dwarf_len = dwarf_opcode_len;
+ reg_info.dwarf_opcode_bytes.resize(dwarf_opcode_len);
StringExtractor opcode_extractor(value);
uint32_t ret_val =
- opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes);
+ opcode_extractor.GetHexBytesAvail(reg_info.dwarf_opcode_bytes);
assert(dwarf_opcode_len == ret_val);
UNUSED_IF_ASSERT_DISABLED(ret_val);
- reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data();
}
}
- reg_info.byte_offset = reg_offset;
assert(reg_info.byte_size != 0);
- reg_offset = LLDB_INVALID_INDEX32;
- if (!value_regs.empty()) {
- value_regs.push_back(LLDB_INVALID_REGNUM);
- reg_info.value_regs = value_regs.data();
- }
- if (!invalidate_regs.empty()) {
- invalidate_regs.push_back(LLDB_INVALID_REGNUM);
- reg_info.invalidate_regs = invalidate_regs.data();
- }
-
- reg_info.name = reg_name.AsCString();
- reg_info.alt_name = alt_name.AsCString();
- // We have to make a temporary ABI here, and not use the GetABI because
- // this code gets called in DidAttach, when the target architecture
- // (and consequently the ABI we'll get from the process) may be wrong.
- if (ABISP abi_sp = ABI::FindPlugin(shared_from_this(), arch_to_use))
- abi_sp->AugmentRegisterInfo(reg_info);
-
- m_register_info_sp->AddRegister(reg_info, set_name);
+ registers.push_back(reg_info);
} else {
break; // ensure exit before reg_num is incremented
}
@@ -594,8 +541,8 @@ void ProcessGDBRemote::BuildDynamicRegisterInfo(bool force) {
}
}
- if (m_register_info_sp->GetNumRegisters() > 0) {
- m_register_info_sp->Finalize(GetTarget().GetArchitecture());
+ if (!registers.empty()) {
+ AddRemoteRegisters(registers, arch_to_use);
return;
}
@@ -4384,53 +4331,24 @@ struct GdbServerTargetInfo {
};
bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info,
- GDBRemoteDynamicRegisterInfo &dyn_reg_info, ABISP abi_sp,
- uint32_t ®_num_remote, uint32_t ®_num_local) {
+ std::vector<RemoteRegisterInfo> ®isters) {
if (!feature_node)
return false;
- uint32_t reg_offset = LLDB_INVALID_INDEX32;
feature_node.ForEachChildElementWithName(
- "reg", [&target_info, &dyn_reg_info, ®_num_remote, ®_num_local,
- ®_offset, &abi_sp](const XMLNode ®_node) -> bool {
+ "reg", [&target_info, ®isters](const XMLNode ®_node) -> bool {
std::string gdb_group;
std::string gdb_type;
- ConstString reg_name;
- ConstString alt_name;
- ConstString set_name;
- std::vector<uint32_t> value_regs;
- std::vector<uint32_t> invalidate_regs;
- std::vector<uint8_t> dwarf_opcode_bytes;
+ RemoteRegisterInfo reg_info;
bool encoding_set = false;
bool format_set = false;
- RegisterInfo reg_info = {
- nullptr, // Name
- nullptr, // Alt name
- 0, // byte size
- reg_offset, // offset
- eEncodingUint, // encoding
- eFormatHex, // format
- {
- LLDB_INVALID_REGNUM, // eh_frame reg num
- LLDB_INVALID_REGNUM, // DWARF reg num
- LLDB_INVALID_REGNUM, // generic reg num
- reg_num_remote, // process plugin reg num
- reg_num_local // native register number
- },
- nullptr,
- nullptr,
- nullptr, // Dwarf Expression opcode bytes pointer
- 0 // Dwarf Expression opcode bytes length
- };
reg_node.ForEachAttribute([&target_info, &gdb_group, &gdb_type,
- ®_name, &alt_name, &set_name, &value_regs,
- &invalidate_regs, &encoding_set, &format_set,
- ®_info, ®_offset, &dwarf_opcode_bytes](
+ &encoding_set, &format_set, ®_info](
const llvm::StringRef &name,
const llvm::StringRef &value) -> bool {
if (name == "name") {
- reg_name.SetString(value);
+ reg_info.name.SetString(value);
} else if (name == "bitsize") {
reg_info.byte_size =
StringConvert::ToUInt32(value.data(), 0, 0) / CHAR_BIT;
@@ -4442,72 +4360,65 @@ bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info,
const uint32_t regnum =
StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
if (regnum != LLDB_INVALID_REGNUM) {
- reg_info.kinds[eRegisterKindProcessPlugin] = regnum;
+ reg_info.regnum_remote = regnum;
}
} else if (name == "offset") {
- reg_offset = StringConvert::ToUInt32(value.data(), UINT32_MAX, 0);
+ reg_info.byte_offset =
+ StringConvert::ToUInt32(value.data(), LLDB_INVALID_INDEX32, 0);
} else if (name == "altname") {
- alt_name.SetString(value);
+ reg_info.alt_name.SetString(value);
} else if (name == "encoding") {
encoding_set = true;
reg_info.encoding = Args::StringToEncoding(value, eEncodingUint);
} else if (name == "format") {
format_set = true;
- Format format = eFormatInvalid;
- if (OptionArgParser::ToFormat(value.data(), format, nullptr)
- .Success())
- reg_info.format = format;
- else if (value == "vector-sint8")
- reg_info.format = eFormatVectorOfSInt8;
- else if (value == "vector-uint8")
- reg_info.format = eFormatVectorOfUInt8;
- else if (value == "vector-sint16")
- reg_info.format = eFormatVectorOfSInt16;
- else if (value == "vector-uint16")
- reg_info.format = eFormatVectorOfUInt16;
- else if (value == "vector-sint32")
- reg_info.format = eFormatVectorOfSInt32;
- else if (value == "vector-uint32")
- reg_info.format = eFormatVectorOfUInt32;
- else if (value == "vector-float32")
- reg_info.format = eFormatVectorOfFloat32;
- else if (value == "vector-uint64")
- reg_info.format = eFormatVectorOfUInt64;
- else if (value == "vector-uint128")
- reg_info.format = eFormatVectorOfUInt128;
+ if (!OptionArgParser::ToFormat(value.data(), reg_info.format,
+ nullptr)
+ .Success())
+ reg_info.format =
+ llvm::StringSwitch<lldb::Format>(value)
+ .Case("vector-sint8", eFormatVectorOfSInt8)
+ .Case("vector-uint8", eFormatVectorOfUInt8)
+ .Case("vector-sint16", eFormatVectorOfSInt16)
+ .Case("vector-uint16", eFormatVectorOfUInt16)
+ .Case("vector-sint32", eFormatVectorOfSInt32)
+ .Case("vector-uint32", eFormatVectorOfUInt32)
+ .Case("vector-float32", eFormatVectorOfFloat32)
+ .Case("vector-uint64", eFormatVectorOfUInt64)
+ .Case("vector-uint128", eFormatVectorOfUInt128)
+ .Default(eFormatInvalid);
} else if (name == "group_id") {
const uint32_t set_id =
StringConvert::ToUInt32(value.data(), UINT32_MAX, 0);
RegisterSetMap::const_iterator pos =
target_info.reg_set_map.find(set_id);
if (pos != target_info.reg_set_map.end())
- set_name = pos->second.name;
+ reg_info.set_name = pos->second.name;
} else if (name == "gcc_regnum" || name == "ehframe_regnum") {
- reg_info.kinds[eRegisterKindEHFrame] =
+ reg_info.regnum_ehframe =
StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
} else if (name == "dwarf_regnum") {
- reg_info.kinds[eRegisterKindDWARF] =
+ reg_info.regnum_dwarf =
StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
} else if (name == "generic") {
- reg_info.kinds[eRegisterKindGeneric] =
- Args::StringToGenericRegister(value);
+ reg_info.regnum_generic = Args::StringToGenericRegister(value);
} else if (name == "value_regnums") {
- SplitCommaSeparatedRegisterNumberString(value, value_regs, 0);
+ SplitCommaSeparatedRegisterNumberString(value, reg_info.value_regs,
+ 0);
} else if (name == "invalidate_regnums") {
- SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 0);
+ SplitCommaSeparatedRegisterNumberString(
+ value, reg_info.invalidate_regs, 0);
} else if (name == "dynamic_size_dwarf_expr_bytes") {
std::string opcode_string = value.str();
size_t dwarf_opcode_len = opcode_string.length() / 2;
assert(dwarf_opcode_len > 0);
- dwarf_opcode_bytes.resize(dwarf_opcode_len);
- reg_info.dynamic_size_dwarf_len = dwarf_opcode_len;
+ reg_info.dwarf_opcode_bytes.resize(dwarf_opcode_len);
StringExtractor opcode_extractor(opcode_string);
uint32_t ret_val =
- opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes);
+ opcode_extractor.GetHexBytesAvail(reg_info.dwarf_opcode_bytes);
assert(dwarf_opcode_len == ret_val);
UNUSED_IF_ASSERT_DISABLED(ret_val);
- reg_info.dynamic_size_dwarf_expr_bytes = dwarf_opcode_bytes.data();
} else {
printf("unhandled attribute %s = %s\n", name.data(), value.data());
}
@@ -4533,36 +4444,18 @@ bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info,
// Only update the register set name if we didn't get a "reg_set"
// attribute. "set_name" will be empty if we didn't have a "reg_set"
// attribute.
- if (!set_name) {
+ if (!reg_info.set_name) {
if (!gdb_group.empty()) {
- set_name.SetCString(gdb_group.c_str());
+ reg_info.set_name.SetCString(gdb_group.c_str());
} else {
// If no register group name provided anywhere,
// we'll create a 'general' register set
- set_name.SetCString("general");
+ reg_info.set_name.SetCString("general");
}
}
- reg_info.byte_offset = reg_offset;
assert(reg_info.byte_size != 0);
- reg_offset = LLDB_INVALID_INDEX32;
- if (!value_regs.empty()) {
- value_regs.push_back(LLDB_INVALID_REGNUM);
- reg_info.value_regs = value_regs.data();
- }
- if (!invalidate_regs.empty()) {
- invalidate_regs.push_back(LLDB_INVALID_REGNUM);
- reg_info.invalidate_regs = invalidate_regs.data();
- }
-
- reg_num_remote = reg_info.kinds[eRegisterKindProcessPlugin] + 1;
- ++reg_num_local;
- reg_info.name = reg_name.AsCString();
- reg_info.alt_name = alt_name.AsCString();
- if (abi_sp)
- abi_sp->AugmentRegisterInfo(reg_info);
- dyn_reg_info.AddRegister(reg_info, set_name);
-
+ registers.push_back(reg_info);
return true; // Keep iterating through all "reg" elements
});
return true;
@@ -4576,8 +4469,7 @@ bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info,
// for nested register definition files. It returns true if it was able
// to fetch and parse an xml file.
bool ProcessGDBRemote::GetGDBServerRegisterInfoXMLAndProcess(
- ArchSpec &arch_to_use, std::string xml_filename, uint32_t ®_num_remote,
- uint32_t ®_num_local) {
+ ArchSpec &arch_to_use, std::string xml_filename, std::vector<RemoteRegisterInfo> ®isters) {
// request the target xml file
std::string raw;
lldb_private::Status lldberr;
@@ -4673,18 +4565,14 @@ bool ProcessGDBRemote::GetGDBServerRegisterInfoXMLAndProcess(
}
if (arch_to_use.IsValid()) {
- // Don't use Process::GetABI, this code gets called from DidAttach, and
- // in that context we haven't set the Target's architecture yet, so the
- // ABI is also potentially incorrect.
- ABISP abi_to_use_sp = ABI::FindPlugin(shared_from_this(), arch_to_use);
for (auto &feature_node : feature_nodes) {
- ParseRegisters(feature_node, target_info, *this->m_register_info_sp,
- abi_to_use_sp, reg_num_remote, reg_num_local);
+ ParseRegisters(feature_node, target_info,
+ registers);
}
for (const auto &include : target_info.includes) {
GetGDBServerRegisterInfoXMLAndProcess(arch_to_use, include,
- reg_num_remote, reg_num_local);
+ registers);
}
}
} else {
@@ -4693,6 +4581,51 @@ bool ProcessGDBRemote::GetGDBServerRegisterInfoXMLAndProcess(
return true;
}
+void ProcessGDBRemote::AddRemoteRegisters(
+ std::vector<RemoteRegisterInfo> ®isters, const ArchSpec &arch_to_use) {
+ // Don't use Process::GetABI, this code gets called from DidAttach, and
+ // in that context we haven't set the Target's architecture yet, so the
+ // ABI is also potentially incorrect.
+ ABISP abi_sp = ABI::FindPlugin(shared_from_this(), arch_to_use);
+
+ uint32_t remote_regnum = 0;
+ for (auto it : llvm::enumerate(registers)) {
+ uint32_t local_regnum = it.index();
+ RemoteRegisterInfo &remote_reg_info = it.value();
+ // Use remote regnum if available, previous remote regnum + 1 when not.
+ if (remote_reg_info.regnum_remote != LLDB_INVALID_REGNUM)
+ remote_regnum = remote_reg_info.regnum_remote;
+
+ auto regs_with_sentinel = [](std::vector<uint32_t> &vec) -> uint32_t * {
+ if (!vec.empty()) {
+ vec.push_back(LLDB_INVALID_REGNUM);
+ return vec.data();
+ }
+ return nullptr;
+ };
+
+ struct RegisterInfo reg_info {
+ remote_reg_info.name.AsCString(), remote_reg_info.alt_name.AsCString(),
+ remote_reg_info.byte_size, remote_reg_info.byte_offset,
+ remote_reg_info.encoding, remote_reg_info.format,
+ {remote_reg_info.regnum_ehframe, remote_reg_info.regnum_dwarf,
+ remote_reg_info.regnum_generic, remote_regnum++, local_regnum},
+ regs_with_sentinel(remote_reg_info.value_regs),
+ regs_with_sentinel(remote_reg_info.invalidate_regs),
+ !remote_reg_info.dwarf_opcode_bytes.empty()
+ ? remote_reg_info.dwarf_opcode_bytes.data()
+ : nullptr,
+ remote_reg_info.dwarf_opcode_bytes.size(),
+ };
+
+ if (abi_sp)
+ abi_sp->AugmentRegisterInfo(reg_info);
+ m_register_info_sp->AddRegister(reg_info, remote_reg_info.set_name);
+ };
+
+ m_register_info_sp->Finalize(arch_to_use);
+}
+
// query the target of gdb-remote for extended target information returns
// true on success (got register definitions), false on failure (did not).
bool ProcessGDBRemote::GetGDBServerRegisterInfo(ArchSpec &arch_to_use) {
@@ -4704,11 +4637,10 @@ bool ProcessGDBRemote::GetGDBServerRegisterInfo(ArchSpec &arch_to_use) {
if (!m_gdb_comm.GetQXferFeaturesReadSupported())
return false;
- uint32_t reg_num_remote = 0;
- uint32_t reg_num_local = 0;
+ std::vector<RemoteRegisterInfo> registers;
if (GetGDBServerRegisterInfoXMLAndProcess(arch_to_use, "target.xml",
- reg_num_remote, reg_num_local))
- this->m_register_info_sp->Finalize(arch_to_use);
+ registers))
+ AddRemoteRegisters(registers, arch_to_use);
return m_register_info_sp->GetNumRegisters() > 0;
}
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
index 39939c8ac82be..2a5178b08fc04 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
@@ -44,6 +44,23 @@ class Loader;
}
namespace process_gdb_remote {
+struct RemoteRegisterInfo {
+ ConstString name;
+ ConstString alt_name;
+ ConstString set_name;
+ uint32_t byte_size = LLDB_INVALID_INDEX32;
+ uint32_t byte_offset = LLDB_INVALID_INDEX32;
+ lldb::Encoding encoding = lldb::eEncodingUint;
+ lldb::Format format = lldb::eFormatHex;
+ uint32_t regnum_dwarf = LLDB_INVALID_REGNUM;
+ uint32_t regnum_ehframe = LLDB_INVALID_REGNUM;
+ uint32_t regnum_generic = LLDB_INVALID_REGNUM;
+ uint32_t regnum_remote = LLDB_INVALID_REGNUM;
+ std::vector<uint32_t> value_regs;
+ std::vector<uint32_t> invalidate_regs;
+ std::vector<uint8_t> dwarf_opcode_bytes;
+};
+
class ThreadGDBRemote;
class ProcessGDBRemote : public Process,
@@ -394,11 +411,14 @@ class ProcessGDBRemote : public Process,
DynamicLoader *GetDynamicLoader() override;
- bool GetGDBServerRegisterInfoXMLAndProcess(ArchSpec &arch_to_use,
- std::string xml_filename,
- uint32_t &cur_reg_remote,
- uint32_t &cur_reg_local);
+ bool GetGDBServerRegisterInfoXMLAndProcess(
+ ArchSpec &arch_to_use, std::string xml_filename,
+ std::vector<RemoteRegisterInfo> ®isters);
+ // Convert RemoteRegisterInfos into RegisterInfos and add to the dynamic
+ // register list.
+ void AddRemoteRegisters(std::vector<RemoteRegisterInfo> ®isters,
+ const ArchSpec &arch_to_use);
// Query remote GDBServer for register information
bool GetGDBServerRegisterInfo(ArchSpec &arch);
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