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

   1 //===-- RegisterContextFreeBSD_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 "RegisterContextFreeBSD_arm.h"
  18
  19 using namespace lldb;
  20 using namespace lldb_private;
  21
  22 // Based on RegisterContextLinux_arm.cpp and
  23 // http://svnweb.freebsd.org/base/head/sys/arm/include/reg.h
  24 #define GPR_OFFSET(idx) ((idx) * 4)
  25 #define FPU_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextFreeBSD_arm::GPR))
  26 #define FPSCR_OFFSET (LLVM_EXTENSION offsetof (RegisterContextFreeBSD_arm::FPU, fpscr) + sizeof (RegisterContextFreeBSD_arm::GPR))
  27 #define EXC_OFFSET(idx) ((idx) * 4 + sizeof (RegisterContextFreeBSD_arm::GPR) + sizeof (RegisterContextFreeBSD_arm::FPU))
  28 #define DBG_OFFSET(reg) ((LLVM_EXTENSION offsetof (RegisterContextFreeBSD_arm::DBG, reg) + sizeof (RegisterContextFreeBSD_arm::GPR) + sizeof (RegisterContextFreeBSD_arm::FPU) + sizeof (RegisterContextFreeBSD_arm::EXC)))
  29
  30 #define DEFINE_DBG(reg, i)  #reg, NULL, sizeof(((RegisterContextFreeBSD_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
  31 #define REG_CONTEXT_SIZE (sizeof (RegisterContextFreeBSD_arm::GPR) + sizeof (RegisterContextFreeBSD_arm::FPU) + sizeof (RegisterContextFreeBSD_arm::EXC))
  32
  33 //-----------------------------------------------------------------------------
  34 // Include RegisterInfos_arm to declare our g_register_infos_arm structure.
  35 //-----------------------------------------------------------------------------
  36 #define DECLARE_REGISTER_INFOS_ARM_STRUCT
  37 #include "RegisterInfos_arm.h"
  38 #undef DECLARE_REGISTER_INFOS_ARM_STRUCT
  39
  40 static const lldb_private::RegisterInfo *
  41 GetRegisterInfoPtr (const lldb_private::ArchSpec &target_arch)
  42 {
  43     switch (target_arch.GetMachine())
  44     {
  45         case llvm::Triple::arm:
  46             return g_register_infos_arm;
  47         default:
  48             assert(false && "Unhandled target architecture.");
  49             return NULL;
  50     }
  51 }
  52
  53 static uint32_t
  54 GetRegisterInfoCount(const lldb_private::ArchSpec &target_arch)
  55 {
  56     switch (target_arch.GetMachine())
  57     {
  58         case llvm::Triple::arm:
  59             return static_cast<uint32_t>(sizeof(g_register_infos_arm) / sizeof(g_register_infos_arm[0]));
  60         default:
  61             assert(false && "Unhandled target architecture.");
  62             return 0;
  63     }
  64 }
  65
  66 RegisterContextFreeBSD_arm::RegisterContextFreeBSD_arm(const lldb_private::ArchSpec &target_arch) :
  67     lldb_private::RegisterInfoInterface(target_arch),
  68     m_register_info_p(GetRegisterInfoPtr(target_arch)),
  69     m_register_info_count(GetRegisterInfoCount(target_arch))
  70 {
  71 }
  72
  73 size_t
  74 RegisterContextFreeBSD_arm::GetGPRSize() const
  75 {
  76     return sizeof(struct RegisterContextFreeBSD_arm::GPR);
  77 }
  78
  79 const lldb_private::RegisterInfo *
  80 RegisterContextFreeBSD_arm::GetRegisterInfo() const
  81 {
  82     return m_register_info_p;
  83 }
  84
  85 uint32_t
  86 RegisterContextFreeBSD_arm::GetRegisterCount() const
  87 {
  88     return m_register_info_count;
  89 }