contrib/llvm/tools/lldb/source/Plugins/Process/Utility/RegisterContextLinux_arm.cpp

   1 //===-- RegisterContextLinux_arm.cpp ---------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===---------------------------------------------------------------------===//
   9
  10 #include <stddef.h>
  11 #include <vector>
  12 #include <cassert>
  13
  14 #include "llvm/Support/Compiler.h"
  15 #include "lldb/lldb-defines.h"
  16
  17 #include "RegisterContextLinux_arm.h"
  18
  19 using namespace lldb;
  20 using namespace lldb_private;
  21
  22 // Based on RegisterContextDarwin_arm.cpp
  23 #define GPR_OFFSET(idx) ((idx) * 4)
  24 #define FPU_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextLinux_arm::GPR))
  25 #define EXC_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU))
  26 #define DBG_OFFSET(reg) ((LLVM_EXTENSION offsetof (RegisterContextLinux_arm::DBG, reg) + sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU) + sizeof (RegisterContextLinux_arm::EXC)))
  27
  28 #define DEFINE_DBG(reg, i)  #reg, NULL, sizeof(((RegisterContextLinux_arm::DBG *)NULL)->reg[i]), DBG_OFFSET(reg[i]), eEncodingUint, eFormatHex, { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM, dbg_##reg##i }, NULL, NULL
  29 #define REG_CONTEXT_SIZE (sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU) + sizeof (RegisterContextLinux_arm::EXC))
  30
  31 //-----------------------------------------------------------------------------
  32 // Include RegisterInfos_arm to declare our g_register_infos_arm structure.
  33 //-----------------------------------------------------------------------------
  34 #define DECLARE_REGISTER_INFOS_ARM_STRUCT
  35 #include "RegisterInfos_arm.h"
  36 #undef DECLARE_REGISTER_INFOS_ARM_STRUCT
  37
  38 static const lldb_private::RegisterInfo *
  39 GetRegisterInfoPtr (const lldb_private::ArchSpec &target_arch)
  40 {
  41     switch (target_arch.GetMachine())
  42     {
  43         case llvm::Triple::arm:
  44             return g_register_infos_arm;
  45         default:
  46             assert(false && "Unhandled target architecture.");
  47             return NULL;
  48     }
  49 }
  50
  51 static uint32_t
  52 GetRegisterInfoCount(const lldb_private::ArchSpec &target_arch)
  53 {
  54     switch (target_arch.GetMachine())
  55     {
  56         case llvm::Triple::arm:
  57             return static_cast<uint32_t>(sizeof(g_register_infos_arm) / sizeof(g_register_infos_arm[0]));
  58         default:
  59             assert(false && "Unhandled target architecture.");
  60             return 0;
  61     }
  62 }
  63
  64 RegisterContextLinux_arm::RegisterContextLinux_arm(const lldb_private::ArchSpec &target_arch) :
  65     lldb_private::RegisterInfoInterface(target_arch),
  66     m_register_info_p(GetRegisterInfoPtr(target_arch)),
  67     m_register_info_count(GetRegisterInfoCount(target_arch))
  68 {
  69 }
  70
  71 size_t
  72 RegisterContextLinux_arm::GetGPRSize() const
  73 {
  74     return sizeof(struct RegisterContextLinux_arm::GPR);
  75 }
  76
  77 const lldb_private::RegisterInfo *
  78 RegisterContextLinux_arm::GetRegisterInfo() const
  79 {
  80     return m_register_info_p;
  81 }
  82
  83 uint32_t
  84 RegisterContextLinux_arm::GetRegisterCount() const
  85 {
  86     return m_register_info_count;
  87 }