lldb/tools/debugserver/source/DNBArch.cpp

   1 //===-- DNBArch.cpp ---------------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 //  Created by Greg Clayton on 6/24/07.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "DNBArch.h"
  14 #include <cassert>
  15 #include <mach/mach.h>
  16
  17 #include <map>
  18
  19 #include "DNBLog.h"
  20
  21 typedef std::map<uint32_t, DNBArchPluginInfo> CPUPluginInfoMap;
  22
  23 static uint32_t g_current_cpu_type = 0;
  24 static uint32_t g_current_cpu_subtype = 0;
  25 CPUPluginInfoMap g_arch_plugins;
  26
  27 static const DNBArchPluginInfo *GetArchInfo() {
  28   CPUPluginInfoMap::const_iterator pos =
  29       g_arch_plugins.find(g_current_cpu_type);
  30   if (pos != g_arch_plugins.end())
  31     return &pos->second;
  32   return NULL;
  33 }
  34
  35 uint32_t DNBArchProtocol::GetCPUType() { return g_current_cpu_type; }
  36 uint32_t DNBArchProtocol::GetCPUSubType() { return g_current_cpu_subtype; }
  37
  38 bool DNBArchProtocol::SetArchitecture(uint32_t cpu_type, uint32_t cpu_subtype) {
  39   g_current_cpu_type = cpu_type;
  40   g_current_cpu_subtype = cpu_subtype;
  41   bool result = g_arch_plugins.find(g_current_cpu_type) != g_arch_plugins.end();
  42   DNBLogThreadedIf(LOG_PROCESS,
  43                    "DNBArchProtocol::SetDefaultArchitecture (cpu_type=0x%8.8x, "
  44                    "cpu_subtype=0x%8.8x) => %i",
  45                    cpu_type, cpu_subtype, result);
  46   return result;
  47 }
  48
  49 void DNBArchProtocol::RegisterArchPlugin(const DNBArchPluginInfo &arch_info) {
  50   if (arch_info.cpu_type)
  51     g_arch_plugins[arch_info.cpu_type] = arch_info;
  52 }
  53
  54 uint32_t DNBArchProtocol::GetRegisterCPUType() {
  55   const DNBArchPluginInfo *arch_info = GetArchInfo();
  56   if (arch_info)
  57     return arch_info->cpu_type;
  58   return 0;
  59 }
  60
  61 const DNBRegisterSetInfo *
  62 DNBArchProtocol::GetRegisterSetInfo(nub_size_t *num_reg_sets) {
  63   const DNBArchPluginInfo *arch_info = GetArchInfo();
  64   if (arch_info)
  65     return arch_info->GetRegisterSetInfo(num_reg_sets);
  66   *num_reg_sets = 0;
  67   return NULL;
  68 }
  69
  70 DNBArchProtocol *DNBArchProtocol::Create(MachThread *thread) {
  71   const DNBArchPluginInfo *arch_info = GetArchInfo();
  72   if (arch_info)
  73     return arch_info->Create(thread);
  74   return NULL;
  75 }
  76
  77 const uint8_t *DNBArchProtocol::GetBreakpointOpcode(nub_size_t byte_size) {
  78   const DNBArchPluginInfo *arch_info = GetArchInfo();
  79   if (arch_info)
  80     return arch_info->GetBreakpointOpcode(byte_size);
  81   return NULL;
  82 }