1 //===--------------------- RegisterNumber.cpp -------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "lldb/Target/RegisterNumber.h"
11 #include "lldb/Target/RegisterContext.h"
12 #include "lldb/Target/Thread.h"
14 using namespace lldb_private;
16 RegisterNumber::RegisterNumber(lldb_private::Thread &thread,
17 lldb::RegisterKind kind, uint32_t num)
18 : m_reg_ctx_sp(thread.GetRegisterContext()), m_regnum(num), m_kind(kind),
19 m_kind_regnum_map(), m_name("") {
20 if (m_reg_ctx_sp.get()) {
21 const lldb_private::RegisterInfo *reginfo =
22 m_reg_ctx_sp->GetRegisterInfoAtIndex(
23 GetAsKind(lldb::eRegisterKindLLDB));
24 if (reginfo && reginfo->name) {
25 m_name = reginfo->name;
30 RegisterNumber::RegisterNumber()
31 : m_reg_ctx_sp(), m_regnum(LLDB_INVALID_REGNUM),
32 m_kind(lldb::kNumRegisterKinds), m_kind_regnum_map(), m_name(nullptr) {}
34 void RegisterNumber::init(lldb_private::Thread &thread, lldb::RegisterKind kind,
36 m_reg_ctx_sp = thread.GetRegisterContext();
39 if (m_reg_ctx_sp.get()) {
40 const lldb_private::RegisterInfo *reginfo =
41 m_reg_ctx_sp->GetRegisterInfoAtIndex(
42 GetAsKind(lldb::eRegisterKindLLDB));
43 if (reginfo && reginfo->name) {
44 m_name = reginfo->name;
49 const RegisterNumber &RegisterNumber::operator=(const RegisterNumber &rhs) {
50 m_reg_ctx_sp = rhs.m_reg_ctx_sp;
51 m_regnum = rhs.m_regnum;
53 for (auto it : rhs.m_kind_regnum_map)
54 m_kind_regnum_map[it.first] = it.second;
59 bool RegisterNumber::operator==(RegisterNumber &rhs) {
60 if (IsValid() != rhs.IsValid())
63 if (m_kind == rhs.m_kind) {
64 return m_regnum == rhs.m_regnum;
67 uint32_t rhs_regnum = rhs.GetAsKind(m_kind);
68 if (rhs_regnum != LLDB_INVALID_REGNUM) {
69 return m_regnum == rhs_regnum;
71 uint32_t lhs_regnum = GetAsKind(rhs.m_kind);
72 { return lhs_regnum == rhs.m_regnum; }
76 bool RegisterNumber::operator!=(RegisterNumber &rhs) { return !(*this == rhs); }
78 bool RegisterNumber::IsValid() const {
79 return m_reg_ctx_sp.get() && m_kind != lldb::kNumRegisterKinds &&
80 m_regnum != LLDB_INVALID_REGNUM;
83 uint32_t RegisterNumber::GetAsKind(lldb::RegisterKind kind) {
84 if (m_regnum == LLDB_INVALID_REGNUM)
85 return LLDB_INVALID_REGNUM;
90 Collection::iterator iter = m_kind_regnum_map.find(kind);
91 if (iter != m_kind_regnum_map.end()) {
94 uint32_t output_regnum = LLDB_INVALID_REGNUM;
96 m_reg_ctx_sp->ConvertBetweenRegisterKinds(m_kind, m_regnum, kind,
98 output_regnum != LLDB_INVALID_REGNUM) {
99 m_kind_regnum_map[kind] = output_regnum;
101 return output_regnum;
104 uint32_t RegisterNumber::GetRegisterNumber() const { return m_regnum; }
106 lldb::RegisterKind RegisterNumber::GetRegisterKind() const { return m_kind; }
108 const char *RegisterNumber::GetName() { return m_name; }