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//===-- DynamicRegisterInfo.cpp ----------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "DynamicRegisterInfo.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/DataFormatters/FormatManager.h"
#include "lldb/Host/StringConvert.h"
#include "lldb/Interpreter/OptionArgParser.h"
#include "lldb/Utility/ArchSpec.h"
#include "lldb/Utility/RegularExpression.h"
#include "lldb/Utility/StringExtractor.h"
#include "lldb/Utility/StructuredData.h"
using namespace lldb;
using namespace lldb_private;
DynamicRegisterInfo::DynamicRegisterInfo(
const lldb_private::StructuredData::Dictionary &dict,
const lldb_private::ArchSpec &arch) {
SetRegisterInfo(dict, arch);
}
DynamicRegisterInfo::DynamicRegisterInfo(DynamicRegisterInfo &&info) {
MoveFrom(std::move(info));
}
DynamicRegisterInfo &
DynamicRegisterInfo::operator=(DynamicRegisterInfo &&info) {
MoveFrom(std::move(info));
return *this;
}
void DynamicRegisterInfo::MoveFrom(DynamicRegisterInfo &&info) {
m_regs = std::move(info.m_regs);
m_sets = std::move(info.m_sets);
m_set_reg_nums = std::move(info.m_set_reg_nums);
m_set_names = std::move(info.m_set_names);
m_value_regs_map = std::move(info.m_value_regs_map);
m_invalidate_regs_map = std::move(info.m_invalidate_regs_map);
m_dynamic_reg_size_map = std::move(info.m_dynamic_reg_size_map);
m_reg_data_byte_size = info.m_reg_data_byte_size;
m_finalized = info.m_finalized;
if (m_finalized) {
const size_t num_sets = m_sets.size();
for (size_t set = 0; set < num_sets; ++set)
m_sets[set].registers = m_set_reg_nums[set].data();
}
info.Clear();
}
size_t
DynamicRegisterInfo::SetRegisterInfo(const StructuredData::Dictionary &dict,
const ArchSpec &arch) {
assert(!m_finalized);
StructuredData::Array *sets = nullptr;
if (dict.GetValueForKeyAsArray("sets", sets)) {
const uint32_t num_sets = sets->GetSize();
for (uint32_t i = 0; i < num_sets; ++i) {
ConstString set_name;
if (sets->GetItemAtIndexAsString(i, set_name) && !set_name.IsEmpty()) {
m_sets.push_back({set_name.AsCString(), nullptr, 0, nullptr});
} else {
Clear();
printf("error: register sets must have valid names\n");
return 0;
}
}
m_set_reg_nums.resize(m_sets.size());
}
StructuredData::Array *regs = nullptr;
if (!dict.GetValueForKeyAsArray("registers", regs))
return 0;
const uint32_t num_regs = regs->GetSize();
// typedef std::map<std::string, std::vector<std::string> >
// InvalidateNameMap;
// InvalidateNameMap invalidate_map;
for (uint32_t i = 0; i < num_regs; ++i) {
StructuredData::Dictionary *reg_info_dict = nullptr;
if (!regs->GetItemAtIndexAsDictionary(i, reg_info_dict)) {
Clear();
printf("error: items in the 'registers' array must be dictionaries\n");
regs->DumpToStdout();
return 0;
}
// { 'name':'rcx' , 'bitsize' : 64, 'offset' : 16,
// 'encoding':'uint' , 'format':'hex' , 'set': 0, 'ehframe' : 2,
// 'dwarf' : 2, 'generic':'arg4', 'alt-name':'arg4', },
RegisterInfo reg_info;
std::vector<uint32_t> value_regs;
std::vector<uint32_t> invalidate_regs;
memset(&reg_info, 0, sizeof(reg_info));
ConstString name_val;
ConstString alt_name_val;
if (!reg_info_dict->GetValueForKeyAsString("name", name_val, nullptr)) {
Clear();
printf("error: registers must have valid names and offsets\n");
reg_info_dict->DumpToStdout();
return 0;
}
reg_info.name = name_val.GetCString();
reg_info_dict->GetValueForKeyAsString("alt-name", alt_name_val, nullptr);
reg_info.alt_name = alt_name_val.GetCString();
reg_info_dict->GetValueForKeyAsInteger("offset", reg_info.byte_offset,
UINT32_MAX);
const ByteOrder byte_order = arch.GetByteOrder();
if (reg_info.byte_offset == UINT32_MAX) {
// No offset for this register, see if the register has a value
// expression which indicates this register is part of another register.
// Value expressions are things like "rax[31:0]" which state that the
// current register's value is in a concrete register "rax" in bits 31:0.
// If there is a value expression we can calculate the offset
bool success = false;
llvm::StringRef slice_str;
if (reg_info_dict->GetValueForKeyAsString("slice", slice_str, nullptr)) {
// Slices use the following format:
// REGNAME[MSBIT:LSBIT]
// REGNAME - name of the register to grab a slice of
// MSBIT - the most significant bit at which the current register value
// starts at
// LSBIT - the least significant bit at which the current register value
// ends at
static RegularExpression g_bitfield_regex(
llvm::StringRef("([A-Za-z_][A-Za-z0-9_]*)\\[([0-9]+):([0-9]+)\\]"));
llvm::SmallVector<llvm::StringRef, 4> matches;
if (g_bitfield_regex.Execute(slice_str, &matches)) {
std::string reg_name_str = matches[1].str();
std::string msbit_str = matches[2].str();
std::string lsbit_str = matches[3].str();
const uint32_t msbit =
StringConvert::ToUInt32(msbit_str.c_str(), UINT32_MAX);
const uint32_t lsbit =
StringConvert::ToUInt32(lsbit_str.c_str(), UINT32_MAX);
if (msbit != UINT32_MAX && lsbit != UINT32_MAX) {
if (msbit > lsbit) {
const uint32_t msbyte = msbit / 8;
const uint32_t lsbyte = lsbit / 8;
ConstString containing_reg_name(reg_name_str);
const RegisterInfo *containing_reg_info =
GetRegisterInfo(containing_reg_name);
if (containing_reg_info) {
const uint32_t max_bit = containing_reg_info->byte_size * 8;
if (msbit < max_bit && lsbit < max_bit) {
m_invalidate_regs_map[containing_reg_info
->kinds[eRegisterKindLLDB]]
.push_back(i);
m_value_regs_map[i].push_back(
containing_reg_info->kinds[eRegisterKindLLDB]);
m_invalidate_regs_map[i].push_back(
containing_reg_info->kinds[eRegisterKindLLDB]);
if (byte_order == eByteOrderLittle) {
success = true;
reg_info.byte_offset =
containing_reg_info->byte_offset + lsbyte;
} else if (byte_order == eByteOrderBig) {
success = true;
reg_info.byte_offset =
containing_reg_info->byte_offset + msbyte;
} else {
llvm_unreachable("Invalid byte order");
}
} else {
if (msbit > max_bit)
printf("error: msbit (%u) must be less than the bitsize "
"of the register (%u)\n",
msbit, max_bit);
else
printf("error: lsbit (%u) must be less than the bitsize "
"of the register (%u)\n",
lsbit, max_bit);
}
} else {
printf("error: invalid concrete register \"%s\"\n",
containing_reg_name.GetCString());
}
} else {
printf("error: msbit (%u) must be greater than lsbit (%u)\n",
msbit, lsbit);
}
} else {
printf("error: msbit (%u) and lsbit (%u) must be valid\n", msbit,
lsbit);
}
} else {
// TODO: print error invalid slice string that doesn't follow the
// format
printf("error: failed to match against register bitfield regex\n");
}
} else {
StructuredData::Array *composite_reg_list = nullptr;
if (reg_info_dict->GetValueForKeyAsArray("composite",
composite_reg_list)) {
const size_t num_composite_regs = composite_reg_list->GetSize();
if (num_composite_regs > 0) {
uint32_t composite_offset = UINT32_MAX;
for (uint32_t composite_idx = 0; composite_idx < num_composite_regs;
++composite_idx) {
ConstString composite_reg_name;
if (composite_reg_list->GetItemAtIndexAsString(
composite_idx, composite_reg_name, nullptr)) {
const RegisterInfo *composite_reg_info =
GetRegisterInfo(composite_reg_name);
if (composite_reg_info) {
composite_offset = std::min(composite_offset,
composite_reg_info->byte_offset);
m_value_regs_map[i].push_back(
composite_reg_info->kinds[eRegisterKindLLDB]);
m_invalidate_regs_map[composite_reg_info
->kinds[eRegisterKindLLDB]]
.push_back(i);
m_invalidate_regs_map[i].push_back(
composite_reg_info->kinds[eRegisterKindLLDB]);
} else {
// TODO: print error invalid slice string that doesn't follow
// the format
printf("error: failed to find composite register by name: "
"\"%s\"\n",
composite_reg_name.GetCString());
}
} else {
printf(
"error: 'composite' list value wasn't a python string\n");
}
}
if (composite_offset != UINT32_MAX) {
reg_info.byte_offset = composite_offset;
success = m_value_regs_map.find(i) != m_value_regs_map.end();
} else {
printf("error: 'composite' registers must specify at least one "
"real register\n");
}
} else {
printf("error: 'composite' list was empty\n");
}
}
}
if (!success) {
Clear();
reg_info_dict->DumpToStdout();
return 0;
}
}
int64_t bitsize = 0;
if (!reg_info_dict->GetValueForKeyAsInteger("bitsize", bitsize)) {
Clear();
printf("error: invalid or missing 'bitsize' key/value pair in register "
"dictionary\n");
reg_info_dict->DumpToStdout();
return 0;
}
reg_info.byte_size = bitsize / 8;
llvm::StringRef dwarf_opcode_string;
if (reg_info_dict->GetValueForKeyAsString("dynamic_size_dwarf_expr_bytes",
dwarf_opcode_string)) {
reg_info.dynamic_size_dwarf_len = dwarf_opcode_string.size() / 2;
assert(reg_info.dynamic_size_dwarf_len > 0);
std::vector<uint8_t> dwarf_opcode_bytes(reg_info.dynamic_size_dwarf_len);
uint32_t j;
StringExtractor opcode_extractor(dwarf_opcode_string);
uint32_t ret_val = opcode_extractor.GetHexBytesAvail(dwarf_opcode_bytes);
UNUSED_IF_ASSERT_DISABLED(ret_val);
assert(ret_val == reg_info.dynamic_size_dwarf_len);
for (j = 0; j < reg_info.dynamic_size_dwarf_len; ++j)
m_dynamic_reg_size_map[i].push_back(dwarf_opcode_bytes[j]);
reg_info.dynamic_size_dwarf_expr_bytes = m_dynamic_reg_size_map[i].data();
}
llvm::StringRef format_str;
if (reg_info_dict->GetValueForKeyAsString("format", format_str, nullptr)) {
if (OptionArgParser::ToFormat(format_str.str().c_str(), reg_info.format,
nullptr)
.Fail()) {
Clear();
printf("error: invalid 'format' value in register dictionary\n");
reg_info_dict->DumpToStdout();
return 0;
}
} else {
reg_info_dict->GetValueForKeyAsInteger("format", reg_info.format,
eFormatHex);
}
llvm::StringRef encoding_str;
if (reg_info_dict->GetValueForKeyAsString("encoding", encoding_str))
reg_info.encoding = Args::StringToEncoding(encoding_str, eEncodingUint);
else
reg_info_dict->GetValueForKeyAsInteger("encoding", reg_info.encoding,
eEncodingUint);
size_t set = 0;
if (!reg_info_dict->GetValueForKeyAsInteger<size_t>("set", set, -1) ||
set >= m_sets.size()) {
Clear();
printf("error: invalid 'set' value in register dictionary, valid values "
"are 0 - %i\n",
(int)set);
reg_info_dict->DumpToStdout();
return 0;
}
// Fill in the register numbers
reg_info.kinds[lldb::eRegisterKindLLDB] = i;
reg_info.kinds[lldb::eRegisterKindProcessPlugin] = i;
uint32_t eh_frame_regno = LLDB_INVALID_REGNUM;
reg_info_dict->GetValueForKeyAsInteger("gcc", eh_frame_regno,
LLDB_INVALID_REGNUM);
if (eh_frame_regno == LLDB_INVALID_REGNUM)
reg_info_dict->GetValueForKeyAsInteger("ehframe", eh_frame_regno,
LLDB_INVALID_REGNUM);
reg_info.kinds[lldb::eRegisterKindEHFrame] = eh_frame_regno;
reg_info_dict->GetValueForKeyAsInteger(
"dwarf", reg_info.kinds[lldb::eRegisterKindDWARF], LLDB_INVALID_REGNUM);
llvm::StringRef generic_str;
if (reg_info_dict->GetValueForKeyAsString("generic", generic_str))
reg_info.kinds[lldb::eRegisterKindGeneric] =
Args::StringToGenericRegister(generic_str);
else
reg_info_dict->GetValueForKeyAsInteger(
"generic", reg_info.kinds[lldb::eRegisterKindGeneric],
LLDB_INVALID_REGNUM);
// Check if this register invalidates any other register values when it is
// modified
StructuredData::Array *invalidate_reg_list = nullptr;
if (reg_info_dict->GetValueForKeyAsArray("invalidate-regs",
invalidate_reg_list)) {
const size_t num_regs = invalidate_reg_list->GetSize();
if (num_regs > 0) {
for (uint32_t idx = 0; idx < num_regs; ++idx) {
ConstString invalidate_reg_name;
uint64_t invalidate_reg_num;
if (invalidate_reg_list->GetItemAtIndexAsString(
idx, invalidate_reg_name)) {
const RegisterInfo *invalidate_reg_info =
GetRegisterInfo(invalidate_reg_name);
if (invalidate_reg_info) {
m_invalidate_regs_map[i].push_back(
invalidate_reg_info->kinds[eRegisterKindLLDB]);
} else {
// TODO: print error invalid slice string that doesn't follow the
// format
printf("error: failed to find a 'invalidate-regs' register for "
"\"%s\" while parsing register \"%s\"\n",
invalidate_reg_name.GetCString(), reg_info.name);
}
} else if (invalidate_reg_list->GetItemAtIndexAsInteger(
idx, invalidate_reg_num)) {
if (invalidate_reg_num != UINT64_MAX)
m_invalidate_regs_map[i].push_back(invalidate_reg_num);
else
printf("error: 'invalidate-regs' list value wasn't a valid "
"integer\n");
} else {
printf("error: 'invalidate-regs' list value wasn't a python string "
"or integer\n");
}
}
} else {
printf("error: 'invalidate-regs' contained an empty list\n");
}
}
// Calculate the register offset
const size_t end_reg_offset = reg_info.byte_offset + reg_info.byte_size;
if (m_reg_data_byte_size < end_reg_offset)
m_reg_data_byte_size = end_reg_offset;
m_regs.push_back(reg_info);
m_set_reg_nums[set].push_back(i);
}
Finalize(arch);
return m_regs.size();
}
void DynamicRegisterInfo::AddRegister(RegisterInfo &reg_info,
ConstString &reg_name,
ConstString &reg_alt_name,
ConstString &set_name) {
assert(!m_finalized);
const uint32_t reg_num = m_regs.size();
reg_info.name = reg_name.AsCString();
assert(reg_info.name);
reg_info.alt_name = reg_alt_name.AsCString(nullptr);
uint32_t i;
if (reg_info.value_regs) {
for (i = 0; reg_info.value_regs[i] != LLDB_INVALID_REGNUM; ++i)
m_value_regs_map[reg_num].push_back(reg_info.value_regs[i]);
}
if (reg_info.invalidate_regs) {
for (i = 0; reg_info.invalidate_regs[i] != LLDB_INVALID_REGNUM; ++i)
m_invalidate_regs_map[reg_num].push_back(reg_info.invalidate_regs[i]);
}
if (reg_info.dynamic_size_dwarf_expr_bytes) {
for (i = 0; i < reg_info.dynamic_size_dwarf_len; ++i)
m_dynamic_reg_size_map[reg_num].push_back(
reg_info.dynamic_size_dwarf_expr_bytes[i]);
reg_info.dynamic_size_dwarf_expr_bytes =
m_dynamic_reg_size_map[reg_num].data();
}
m_regs.push_back(reg_info);
uint32_t set = GetRegisterSetIndexByName(set_name, true);
assert(set < m_sets.size());
assert(set < m_set_reg_nums.size());
assert(set < m_set_names.size());
m_set_reg_nums[set].push_back(reg_num);
size_t end_reg_offset = reg_info.byte_offset + reg_info.byte_size;
if (m_reg_data_byte_size < end_reg_offset)
m_reg_data_byte_size = end_reg_offset;
}
void DynamicRegisterInfo::Finalize(const ArchSpec &arch) {
if (m_finalized)
return;
m_finalized = true;
const size_t num_sets = m_sets.size();
for (size_t set = 0; set < num_sets; ++set) {
assert(m_sets.size() == m_set_reg_nums.size());
m_sets[set].num_registers = m_set_reg_nums[set].size();
m_sets[set].registers = m_set_reg_nums[set].data();
}
// sort and unique all value registers and make sure each is terminated with
// LLDB_INVALID_REGNUM
for (reg_to_regs_map::iterator pos = m_value_regs_map.begin(),
end = m_value_regs_map.end();
pos != end; ++pos) {
if (pos->second.size() > 1) {
llvm::sort(pos->second.begin(), pos->second.end());
reg_num_collection::iterator unique_end =
std::unique(pos->second.begin(), pos->second.end());
if (unique_end != pos->second.end())
pos->second.erase(unique_end, pos->second.end());
}
assert(!pos->second.empty());
if (pos->second.back() != LLDB_INVALID_REGNUM)
pos->second.push_back(LLDB_INVALID_REGNUM);
}
// Now update all value_regs with each register info as needed
const size_t num_regs = m_regs.size();
for (size_t i = 0; i < num_regs; ++i) {
if (m_value_regs_map.find(i) != m_value_regs_map.end())
m_regs[i].value_regs = m_value_regs_map[i].data();
else
m_regs[i].value_regs = nullptr;
}
// Expand all invalidation dependencies
for (reg_to_regs_map::iterator pos = m_invalidate_regs_map.begin(),
end = m_invalidate_regs_map.end();
pos != end; ++pos) {
const uint32_t reg_num = pos->first;
if (m_regs[reg_num].value_regs) {
reg_num_collection extra_invalid_regs;
for (const uint32_t invalidate_reg_num : pos->second) {
reg_to_regs_map::iterator invalidate_pos =
m_invalidate_regs_map.find(invalidate_reg_num);
if (invalidate_pos != m_invalidate_regs_map.end()) {
for (const uint32_t concrete_invalidate_reg_num :
invalidate_pos->second) {
if (concrete_invalidate_reg_num != reg_num)
extra_invalid_regs.push_back(concrete_invalidate_reg_num);
}
}
}
pos->second.insert(pos->second.end(), extra_invalid_regs.begin(),
extra_invalid_regs.end());
}
}
// sort and unique all invalidate registers and make sure each is terminated
// with LLDB_INVALID_REGNUM
for (reg_to_regs_map::iterator pos = m_invalidate_regs_map.begin(),
end = m_invalidate_regs_map.end();
pos != end; ++pos) {
if (pos->second.size() > 1) {
llvm::sort(pos->second.begin(), pos->second.end());
reg_num_collection::iterator unique_end =
std::unique(pos->second.begin(), pos->second.end());
if (unique_end != pos->second.end())
pos->second.erase(unique_end, pos->second.end());
}
assert(!pos->second.empty());
if (pos->second.back() != LLDB_INVALID_REGNUM)
pos->second.push_back(LLDB_INVALID_REGNUM);
}
// Now update all invalidate_regs with each register info as needed
for (size_t i = 0; i < num_regs; ++i) {
if (m_invalidate_regs_map.find(i) != m_invalidate_regs_map.end())
m_regs[i].invalidate_regs = m_invalidate_regs_map[i].data();
else
m_regs[i].invalidate_regs = nullptr;
}
// Check if we need to automatically set the generic registers in case they
// weren't set
bool generic_regs_specified = false;
for (const auto &reg : m_regs) {
if (reg.kinds[eRegisterKindGeneric] != LLDB_INVALID_REGNUM) {
generic_regs_specified = true;
break;
}
}
if (!generic_regs_specified) {
switch (arch.GetMachine()) {
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_32:
case llvm::Triple::aarch64_be:
for (auto &reg : m_regs) {
if (strcmp(reg.name, "pc") == 0)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
else if ((strcmp(reg.name, "fp") == 0) ||
(strcmp(reg.name, "x29") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if ((strcmp(reg.name, "lr") == 0) ||
(strcmp(reg.name, "x30") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_RA;
else if ((strcmp(reg.name, "sp") == 0) ||
(strcmp(reg.name, "x31") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP;
else if (strcmp(reg.name, "cpsr") == 0)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS;
}
break;
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
for (auto &reg : m_regs) {
if ((strcmp(reg.name, "pc") == 0) || (strcmp(reg.name, "r15") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
else if ((strcmp(reg.name, "sp") == 0) ||
(strcmp(reg.name, "r13") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP;
else if ((strcmp(reg.name, "lr") == 0) ||
(strcmp(reg.name, "r14") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_RA;
else if ((strcmp(reg.name, "r7") == 0) &&
arch.GetTriple().getVendor() == llvm::Triple::Apple)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if ((strcmp(reg.name, "r11") == 0) &&
arch.GetTriple().getVendor() != llvm::Triple::Apple)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if (strcmp(reg.name, "fp") == 0)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if (strcmp(reg.name, "cpsr") == 0)
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS;
}
break;
case llvm::Triple::x86:
for (auto &reg : m_regs) {
if ((strcmp(reg.name, "eip") == 0) || (strcmp(reg.name, "pc") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
else if ((strcmp(reg.name, "esp") == 0) ||
(strcmp(reg.name, "sp") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP;
else if ((strcmp(reg.name, "ebp") == 0) ||
(strcmp(reg.name, "fp") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if ((strcmp(reg.name, "eflags") == 0) ||
(strcmp(reg.name, "flags") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS;
}
break;
case llvm::Triple::x86_64:
for (auto &reg : m_regs) {
if ((strcmp(reg.name, "rip") == 0) || (strcmp(reg.name, "pc") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
else if ((strcmp(reg.name, "rsp") == 0) ||
(strcmp(reg.name, "sp") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP;
else if ((strcmp(reg.name, "rbp") == 0) ||
(strcmp(reg.name, "fp") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP;
else if ((strcmp(reg.name, "rflags") == 0) ||
(strcmp(reg.name, "flags") == 0))
reg.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS;
}
break;
default:
break;
}
}
}
size_t DynamicRegisterInfo::GetNumRegisters() const { return m_regs.size(); }
size_t DynamicRegisterInfo::GetNumRegisterSets() const { return m_sets.size(); }
size_t DynamicRegisterInfo::GetRegisterDataByteSize() const {
return m_reg_data_byte_size;
}
const RegisterInfo *
DynamicRegisterInfo::GetRegisterInfoAtIndex(uint32_t i) const {
if (i < m_regs.size())
return &m_regs[i];
return nullptr;
}
RegisterInfo *DynamicRegisterInfo::GetRegisterInfoAtIndex(uint32_t i) {
if (i < m_regs.size())
return &m_regs[i];
return nullptr;
}
const RegisterSet *DynamicRegisterInfo::GetRegisterSet(uint32_t i) const {
if (i < m_sets.size())
return &m_sets[i];
return nullptr;
}
uint32_t DynamicRegisterInfo::GetRegisterSetIndexByName(ConstString &set_name,
bool can_create) {
name_collection::iterator pos, end = m_set_names.end();
for (pos = m_set_names.begin(); pos != end; ++pos) {
if (*pos == set_name)
return std::distance(m_set_names.begin(), pos);
}
m_set_names.push_back(set_name);
m_set_reg_nums.resize(m_set_reg_nums.size() + 1);
RegisterSet new_set = {set_name.AsCString(), nullptr, 0, nullptr};
m_sets.push_back(new_set);
return m_sets.size() - 1;
}
uint32_t
DynamicRegisterInfo::ConvertRegisterKindToRegisterNumber(uint32_t kind,
uint32_t num) const {
reg_collection::const_iterator pos, end = m_regs.end();
for (pos = m_regs.begin(); pos != end; ++pos) {
if (pos->kinds[kind] == num)
return std::distance(m_regs.begin(), pos);
}
return LLDB_INVALID_REGNUM;
}
void DynamicRegisterInfo::Clear() {
m_regs.clear();
m_sets.clear();
m_set_reg_nums.clear();
m_set_names.clear();
m_value_regs_map.clear();
m_invalidate_regs_map.clear();
m_dynamic_reg_size_map.clear();
m_reg_data_byte_size = 0;
m_finalized = false;
}
void DynamicRegisterInfo::Dump() const {
StreamFile s(stdout, false);
const size_t num_regs = m_regs.size();
s.Printf("%p: DynamicRegisterInfo contains %" PRIu64 " registers:\n",
static_cast<const void *>(this), static_cast<uint64_t>(num_regs));
for (size_t i = 0; i < num_regs; ++i) {
s.Printf("[%3" PRIu64 "] name = %-10s", (uint64_t)i, m_regs[i].name);
s.Printf(", size = %2u, offset = %4u, encoding = %u, format = %-10s",
m_regs[i].byte_size, m_regs[i].byte_offset, m_regs[i].encoding,
FormatManager::GetFormatAsCString(m_regs[i].format));
if (m_regs[i].kinds[eRegisterKindProcessPlugin] != LLDB_INVALID_REGNUM)
s.Printf(", process plugin = %3u",
m_regs[i].kinds[eRegisterKindProcessPlugin]);
if (m_regs[i].kinds[eRegisterKindDWARF] != LLDB_INVALID_REGNUM)
s.Printf(", dwarf = %3u", m_regs[i].kinds[eRegisterKindDWARF]);
if (m_regs[i].kinds[eRegisterKindEHFrame] != LLDB_INVALID_REGNUM)
s.Printf(", ehframe = %3u", m_regs[i].kinds[eRegisterKindEHFrame]);
if (m_regs[i].kinds[eRegisterKindGeneric] != LLDB_INVALID_REGNUM)
s.Printf(", generic = %3u", m_regs[i].kinds[eRegisterKindGeneric]);
if (m_regs[i].alt_name)
s.Printf(", alt-name = %s", m_regs[i].alt_name);
if (m_regs[i].value_regs) {
s.Printf(", value_regs = [ ");
for (size_t j = 0; m_regs[i].value_regs[j] != LLDB_INVALID_REGNUM; ++j) {
s.Printf("%s ", m_regs[m_regs[i].value_regs[j]].name);
}
s.Printf("]");
}
if (m_regs[i].invalidate_regs) {
s.Printf(", invalidate_regs = [ ");
for (size_t j = 0; m_regs[i].invalidate_regs[j] != LLDB_INVALID_REGNUM;
++j) {
s.Printf("%s ", m_regs[m_regs[i].invalidate_regs[j]].name);
}
s.Printf("]");
}
s.EOL();
}
const size_t num_sets = m_sets.size();
s.Printf("%p: DynamicRegisterInfo contains %" PRIu64 " register sets:\n",
static_cast<const void *>(this), static_cast<uint64_t>(num_sets));
for (size_t i = 0; i < num_sets; ++i) {
s.Printf("set[%" PRIu64 "] name = %s, regs = [", (uint64_t)i,
m_sets[i].name);
for (size_t idx = 0; idx < m_sets[i].num_registers; ++idx) {
s.Printf("%s ", m_regs[m_sets[i].registers[idx]].name);
}
s.Printf("]\n");
}
}
const lldb_private::RegisterInfo *DynamicRegisterInfo::GetRegisterInfo(
lldb_private::ConstString reg_name) const {
for (auto &reg_info : m_regs) {
// We can use pointer comparison since we used a ConstString to set the
// "name" member in AddRegister()
if (reg_info.name == reg_name.GetCString()) {
return &reg_info;
}
}
return nullptr;
}