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| //===--------------------- RegisterNumber.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 "lldb/Target/RegisterNumber.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/Thread.h"
using namespace lldb_private;
RegisterNumber::RegisterNumber(lldb_private::Thread &thread,
lldb::RegisterKind kind, uint32_t num)
: m_reg_ctx_sp(thread.GetRegisterContext()), m_regnum(num), m_kind(kind),
m_kind_regnum_map(), m_name("") {
if (m_reg_ctx_sp.get()) {
const lldb_private::RegisterInfo *reginfo =
m_reg_ctx_sp->GetRegisterInfoAtIndex(
GetAsKind(lldb::eRegisterKindLLDB));
if (reginfo && reginfo->name) {
m_name = reginfo->name;
}
}
}
RegisterNumber::RegisterNumber()
: m_reg_ctx_sp(), m_regnum(LLDB_INVALID_REGNUM),
m_kind(lldb::kNumRegisterKinds), m_kind_regnum_map(), m_name(nullptr) {}
void RegisterNumber::init(lldb_private::Thread &thread, lldb::RegisterKind kind,
uint32_t num) {
m_reg_ctx_sp = thread.GetRegisterContext();
m_regnum = num;
m_kind = kind;
if (m_reg_ctx_sp.get()) {
const lldb_private::RegisterInfo *reginfo =
m_reg_ctx_sp->GetRegisterInfoAtIndex(
GetAsKind(lldb::eRegisterKindLLDB));
if (reginfo && reginfo->name) {
m_name = reginfo->name;
}
}
}
const RegisterNumber &RegisterNumber::operator=(const RegisterNumber &rhs) {
m_reg_ctx_sp = rhs.m_reg_ctx_sp;
m_regnum = rhs.m_regnum;
m_kind = rhs.m_kind;
for (auto it : rhs.m_kind_regnum_map)
m_kind_regnum_map[it.first] = it.second;
m_name = rhs.m_name;
return *this;
}
bool RegisterNumber::operator==(RegisterNumber &rhs) {
if (IsValid() != rhs.IsValid())
return false;
if (m_kind == rhs.m_kind) {
return m_regnum == rhs.m_regnum;
}
uint32_t rhs_regnum = rhs.GetAsKind(m_kind);
if (rhs_regnum != LLDB_INVALID_REGNUM) {
return m_regnum == rhs_regnum;
}
uint32_t lhs_regnum = GetAsKind(rhs.m_kind);
{ return lhs_regnum == rhs.m_regnum; }
return false;
}
bool RegisterNumber::operator!=(RegisterNumber &rhs) { return !(*this == rhs); }
bool RegisterNumber::IsValid() const {
return m_reg_ctx_sp.get() && m_kind != lldb::kNumRegisterKinds &&
m_regnum != LLDB_INVALID_REGNUM;
}
uint32_t RegisterNumber::GetAsKind(lldb::RegisterKind kind) {
if (m_regnum == LLDB_INVALID_REGNUM)
return LLDB_INVALID_REGNUM;
if (kind == m_kind)
return m_regnum;
Collection::iterator iter = m_kind_regnum_map.find(kind);
if (iter != m_kind_regnum_map.end()) {
return iter->second;
}
uint32_t output_regnum = LLDB_INVALID_REGNUM;
if (m_reg_ctx_sp &&
m_reg_ctx_sp->ConvertBetweenRegisterKinds(m_kind, m_regnum, kind,
output_regnum) &&
output_regnum != LLDB_INVALID_REGNUM) {
m_kind_regnum_map[kind] = output_regnum;
}
return output_regnum;
}
uint32_t RegisterNumber::GetRegisterNumber() const { return m_regnum; }
lldb::RegisterKind RegisterNumber::GetRegisterKind() const { return m_kind; }
const char *RegisterNumber::GetName() { return m_name; }
|