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 FPSCR_OFFSET (LLVM_EXTENSION offsetof (RegisterContextLinux_arm::FPU, fpscr) + sizeof (RegisterContextLinux_arm::GPR))
  26 #define EXC_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU))
  27 #define DBG_OFFSET(reg) ((LLVM_EXTENSION offsetof (RegisterContextLinux_arm::DBG, reg) + sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU) + sizeof (RegisterContextLinux_arm::EXC)))
  28
  29 #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
  30 #define REG_CONTEXT_SIZE (sizeof (RegisterContextLinux_arm::GPR) + sizeof (RegisterContextLinux_arm::FPU) + sizeof (RegisterContextLinux_arm::EXC))
  31
  32 //-----------------------------------------------------------------------------
  33 // Include RegisterInfos_arm to declare our g_register_infos_arm structure.
  34 //-----------------------------------------------------------------------------
  35 #define DECLARE_REGISTER_INFOS_ARM_STRUCT
  36 #include "RegisterInfos_arm.h"
  37 #undef DECLARE_REGISTER_INFOS_ARM_STRUCT
  38
  39 static const lldb_private::RegisterInfo *
  40 GetRegisterInfoPtr (const lldb_private::ArchSpec &target_arch)
  41 {
  42     switch (target_arch.GetMachine())
  43     {
  44         case llvm::Triple::arm:
  45             return g_register_infos_arm;
  46         default:
  47             assert(false && "Unhandled target architecture.");
  48             return NULL;
  49     }
  50 }
  51
  52 static uint32_t
  53 GetRegisterInfoCount(const lldb_private::ArchSpec &target_arch)
  54 {
  55     switch (target_arch.GetMachine())
  56     {
  57         case llvm::Triple::arm:
  58             return static_cast<uint32_t>(sizeof(g_register_infos_arm) / sizeof(g_register_infos_arm[0]));
  59         default:
  60             assert(false && "Unhandled target architecture.");
  61             return 0;
  62     }
  63 }
  64
  65 RegisterContextLinux_arm::RegisterContextLinux_arm(const lldb_private::ArchSpec &target_arch) :
  66     lldb_private::RegisterInfoInterface(target_arch),
  67     m_register_info_p(GetRegisterInfoPtr(target_arch)),
  68     m_register_info_count(GetRegisterInfoCount(target_arch))
  69 {
  70 }
  71
  72 size_t
  73 RegisterContextLinux_arm::GetGPRSize() const
  74 {
  75     return sizeof(struct RegisterContextLinux_arm::GPR);
  76 }
  77
  78 const lldb_private::RegisterInfo *
  79 RegisterContextLinux_arm::GetRegisterInfo() const
  80 {
  81     return m_register_info_p;
  82 }
  83
  84 uint32_t
  85 RegisterContextLinux_arm::GetRegisterCount() const
  86 {
  87     return m_register_info_count;
  88 }