contrib/llvm/tools/lldb/source/Plugins/ABI/SysV-arm64/ABISysV_arm64.cpp

   1 //===-- ABISysV_arm64.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 "ABISysV_arm64.h"
  11
  12 // C Includes
  13 // C++ Includes
  14 #include <vector>
  15
  16 // Other libraries and framework includes
  17 #include "llvm/ADT/STLExtras.h"
  18 #include "llvm/ADT/Triple.h"
  19
  20 // Project includes
  21 #include "lldb/Core/ConstString.h"
  22 #include "lldb/Core/Error.h"
  23 #include "lldb/Core/Log.h"
  24 #include "lldb/Core/Module.h"
  25 #include "lldb/Core/PluginManager.h"
  26 #include "lldb/Core/RegisterValue.h"
  27 #include "lldb/Core/Scalar.h"
  28 #include "lldb/Core/Value.h"
  29 #include "lldb/Core/ValueObjectConstResult.h"
  30 #include "lldb/Symbol/UnwindPlan.h"
  31 #include "lldb/Target/Process.h"
  32 #include "lldb/Target/RegisterContext.h"
  33 #include "lldb/Target/Target.h"
  34 #include "lldb/Target/Thread.h"
  35
  36 #include "Utility/ARM64_DWARF_Registers.h"
  37
  38 using namespace lldb;
  39 using namespace lldb_private;
  40
  41 static RegisterInfo g_register_infos[] =
  42 {
  43     //  NAME       ALT       SZ OFF ENCODING          FORMAT                   EH_FRAME             DWARF                  GENERIC                     PROCESS PLUGIN          LLDB NATIVE
  44     //  ========== =======   == === =============     ===================      ===================  ====================== =========================== ======================= ======================
  45     {   "x0",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x0,       LLDB_REGNUM_GENERIC_ARG1,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  46     {   "x1",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x1,       LLDB_REGNUM_GENERIC_ARG2,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  47     {   "x2",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x2,       LLDB_REGNUM_GENERIC_ARG3,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  48     {   "x3",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x3,       LLDB_REGNUM_GENERIC_ARG4,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  49     {   "x4",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x4,       LLDB_REGNUM_GENERIC_ARG5,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  50     {   "x5",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x5,       LLDB_REGNUM_GENERIC_ARG6,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  51     {   "x6",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x6,       LLDB_REGNUM_GENERIC_ARG7,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  52     {   "x7",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x7,       LLDB_REGNUM_GENERIC_ARG8,   LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  53     {   "x8",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x8,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  54     {   "x9",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x9,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  55     {   "x10",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x10,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  56     {   "x11",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x11,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  57     {   "x12",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x12,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  58     {   "x13",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x13,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  59     {   "x14",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x14,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  60     {   "x15",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x15,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  61     {   "x16",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x16,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  62     {   "x17",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x17,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  63     {   "x18",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x18,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  64     {   "x19",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x19,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  65     {   "x20",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x20,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  66     {   "x21",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x21,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  67     {   "x22",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x22,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  68     {   "x23",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x23,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  69     {   "x24",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x24,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  70     {   "x25",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x25,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  71     {   "x26",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x26,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  72     {   "x27",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x27,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  73     {   "x28",     nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x28,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  74     {   "fp",      "x29",     8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x29,      LLDB_REGNUM_GENERIC_FP,     LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  75     {   "lr",      "x30",     8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x30,      LLDB_REGNUM_GENERIC_RA,     LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  76     {   "sp",      "x31",     8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::x31,      LLDB_REGNUM_GENERIC_SP,     LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  77     {   "pc",      nullptr,   8, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::pc,       LLDB_REGNUM_GENERIC_PC,     LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  78     {   "cpsr",    "psr",     4, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, arm64_dwarf::cpsr,     LLDB_REGNUM_GENERIC_FLAGS,  LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  79
  80     {   "v0",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v0,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  81     {   "v1",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v1,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  82     {   "v2",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v2,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  83     {   "v3",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v3,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  84     {   "v4",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v4,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  85     {   "v5",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v5,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  86     {   "v6",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v6,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  87     {   "v7",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v7,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  88     {   "v8",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v8,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  89     {   "v9",      nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v9,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  90     {   "v10",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v10,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  91     {   "v11",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v11,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  92     {   "v12",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v12,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  93     {   "v13",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v13,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  94     {   "v14",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v14,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  95     {   "v15",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v15,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  96     {   "v16",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v16,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  97     {   "v17",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v17,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  98     {   "v18",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v18,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
  99     {   "v19",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v19,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 100     {   "v20",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v20,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 101     {   "v21",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v21,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 102     {   "v22",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v22,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 103     {   "v23",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v23,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 104     {   "v24",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v24,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 105     {   "v25",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v25,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 106     {   "v26",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v26,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 107     {   "v27",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v27,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 108     {   "v28",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v28,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 109     {   "v29",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v29,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 110     {   "v30",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v30,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 111     {   "v31",     nullptr,  16, 0, eEncodingVector , eFormatVectorOfUInt8,  { LLDB_INVALID_REGNUM, arm64_dwarf::v31,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 112
 113     {   "fpsr",    nullptr,   4, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,   LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 114     {   "fpcr",    nullptr,   4, 0, eEncodingUint   , eFormatHex           , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,   LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 115
 116     {   "s0",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 117     {   "s1",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 118     {   "s2",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 119     {   "s3",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 120     {   "s4",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 121     {   "s5",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 122     {   "s6",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 123     {   "s7",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 124     {   "s8",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 125     {   "s9",      nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 126     {   "s10",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 127     {   "s11",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 128     {   "s12",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 129     {   "s13",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 130     {   "s14",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 131     {   "s15",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 132     {   "s16",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 133     {   "s17",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 134     {   "s18",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 135     {   "s19",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 136     {   "s20",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 137     {   "s21",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 138     {   "s22",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 139     {   "s23",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 140     {   "s24",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 141     {   "s25",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 142     {   "s26",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 143     {   "s27",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 144     {   "s28",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 145     {   "s29",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 146     {   "s30",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 147     {   "s31",     nullptr,  4, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 148
 149     {   "d0",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 150     {   "d1",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 151     {   "d2",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 152     {   "d3",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 153     {   "d4",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 154     {   "d5",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 155     {   "d6",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 156     {   "d7",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 157     {   "d8",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 158     {   "d9",      nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 159     {   "d10",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 160     {   "d11",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 161     {   "d12",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 162     {   "d13",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 163     {   "d14",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 164     {   "d15",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 165     {   "d16",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 166     {   "d17",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 167     {   "d18",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 168     {   "d19",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 169     {   "d20",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 170     {   "d21",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 171     {   "d22",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 172     {   "d23",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 173     {   "d24",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 174     {   "d25",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 175     {   "d26",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 176     {   "d27",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 177     {   "d28",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 178     {   "d29",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 179     {   "d30",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr },
 180     {   "d31",     nullptr,  8, 0, eEncodingIEEE754 , eFormatFloat         , { LLDB_INVALID_REGNUM, LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM }, nullptr, nullptr }
 181 };
 182
 183 static const uint32_t k_num_register_infos = llvm::array_lengthof(g_register_infos);
 184 static bool g_register_info_names_constified = false;
 185
 186 const lldb_private::RegisterInfo *
 187 ABISysV_arm64::GetRegisterInfoArray (uint32_t &count)
 188 {
 189     // Make the C-string names and alt_names for the register infos into const
 190     // C-string values by having the ConstString unique the names in the global
 191     // constant C-string pool.
 192     if (!g_register_info_names_constified)
 193     {
 194         g_register_info_names_constified = true;
 195         for (uint32_t i=0; i<k_num_register_infos; ++i)
 196         {
 197             if (g_register_infos[i].name)
 198                 g_register_infos[i].name = ConstString(g_register_infos[i].name).GetCString();
 199             if (g_register_infos[i].alt_name)
 200                 g_register_infos[i].alt_name = ConstString(g_register_infos[i].alt_name).GetCString();
 201         }
 202     }
 203     count = k_num_register_infos;
 204     return g_register_infos;
 205 }
 206
 207 size_t
 208 ABISysV_arm64::GetRedZoneSize () const
 209 {
 210     return 128;
 211 }
 212
 213 //------------------------------------------------------------------
 214 // Static Functions
 215 //------------------------------------------------------------------
 216
 217 ABISP
 218 ABISysV_arm64::CreateInstance (const ArchSpec &arch)
 219 {
 220     static ABISP g_abi_sp;
 221     const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
 222     const llvm::Triple::VendorType vendor_type = arch.GetTriple().getVendor();
 223
 224     if (vendor_type != llvm::Triple::Apple)
 225     {
 226             if (arch_type == llvm::Triple::aarch64)
 227         {
 228             if (!g_abi_sp)
 229                 g_abi_sp.reset (new ABISysV_arm64);
 230             return g_abi_sp;
 231         }
 232     }
 233
 234     return ABISP();
 235 }
 236
 237 bool
 238 ABISysV_arm64::PrepareTrivialCall (Thread &thread,
 239                                    addr_t sp,
 240                                    addr_t func_addr,
 241                                    addr_t return_addr,
 242                                    llvm::ArrayRef<addr_t> args) const
 243 {
 244     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 245     if (!reg_ctx)
 246         return false;
 247
 248     Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
 249
 250     if (log)
 251     {
 252         StreamString s;
 253         s.Printf("ABISysV_x86_64::PrepareTrivialCall (tid = 0x%" PRIx64 ", sp = 0x%" PRIx64 ", func_addr = 0x%" PRIx64 ", return_addr = 0x%" PRIx64,
 254                  thread.GetID(),
 255                  (uint64_t)sp,
 256                  (uint64_t)func_addr,
 257                  (uint64_t)return_addr);
 258
 259         for (size_t i = 0; i < args.size(); ++i)
 260             s.Printf (", arg%d = 0x%" PRIx64, static_cast<int>(i + 1), args[i]);
 261         s.PutCString (")");
 262         log->PutCString(s.GetString().c_str());
 263     }
 264
 265     // x0 - x7 contain first 8 simple args
 266     if (args.size() > 8)
 267         return false;
 268
 269     for (size_t i = 0; i < args.size(); ++i)
 270     {
 271         const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + i);
 272         if (log)
 273             log->Printf("About to write arg%d (0x%" PRIx64 ") into %s",
 274                         static_cast<int>(i + 1), args[i], reg_info->name);
 275         if (!reg_ctx->WriteRegisterFromUnsigned(reg_info, args[i]))
 276             return false;
 277     }
 278
 279     // Set "lr" to the return address
 280     if (!reg_ctx->WriteRegisterFromUnsigned (reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA), return_addr))
 281         return false;
 282
 283     // Set "sp" to the requested value
 284     if (!reg_ctx->WriteRegisterFromUnsigned (reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP), sp))
 285         return false;
 286
 287     // Set "pc" to the address requested
 288     if (!reg_ctx->WriteRegisterFromUnsigned (reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC), func_addr))
 289         return false;
 290
 291     return true;
 292 }
 293
 294 //TODO: We dont support fp/SIMD arguments in v0-v7
 295 bool
 296 ABISysV_arm64::GetArgumentValues (Thread &thread, ValueList &values) const
 297 {
 298     uint32_t num_values = values.GetSize();
 299
 300     ExecutionContext exe_ctx (thread.shared_from_this());
 301
 302     // Extract the register context so we can read arguments from registers
 303
 304     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 305
 306     if (!reg_ctx)
 307         return false;
 308
 309     addr_t sp = 0;
 310
 311     for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx)
 312     {
 313         // We currently only support extracting values with Clang QualTypes.
 314         // Do we care about others?
 315         Value *value = values.GetValueAtIndex(value_idx);
 316
 317         if (!value)
 318             return false;
 319
 320         CompilerType value_type = value->GetCompilerType();
 321         if (value_type)
 322         {
 323             bool is_signed = false;
 324             size_t bit_width = 0;
 325             if (value_type.IsIntegerOrEnumerationType (is_signed))
 326             {
 327                 bit_width = value_type.GetBitSize(&thread);
 328             }
 329             else if (value_type.IsPointerOrReferenceType ())
 330             {
 331                 bit_width = value_type.GetBitSize(&thread);
 332             }
 333             else
 334             {
 335                 // We only handle integer, pointer and reference types currently...
 336                 return false;
 337             }
 338
 339             if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8))
 340             {
 341                 if (value_idx < 8)
 342                 {
 343                     // Arguments 1-8 are in x0-x7...
 344                     const RegisterInfo *reg_info = nullptr;
 345                     reg_info= reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + value_idx);
 346
 347                     if (reg_info)
 348                     {
 349                         RegisterValue reg_value;
 350
 351                         if (reg_ctx->ReadRegister(reg_info, reg_value))
 352                         {
 353                             if (is_signed)
 354                                 reg_value.SignExtend(bit_width);
 355                             if (!reg_value.GetScalarValue(value->GetScalar()))
 356                                 return false;
 357                             continue;
 358                         }
 359                     }
 360                     return false;
 361                 }
 362                 else
 363                 {
 364                     //TODO: Verify for stack layout for SysV
 365                     if (sp == 0)
 366                     {
 367                         // Read the stack pointer if we already haven't read it
 368                         sp = reg_ctx->GetSP(0);
 369                         if (sp == 0)
 370                             return false;
 371                     }
 372
 373                     // Arguments 5 on up are on the stack
 374                     const uint32_t arg_byte_size = (bit_width + (8-1)) / 8;
 375                     Error error;
 376                     if (!exe_ctx.GetProcessRef().ReadScalarIntegerFromMemory(sp, arg_byte_size, is_signed, value->GetScalar(), error))
 377                         return false;
 378
 379                     sp += arg_byte_size;
 380                     // Align up to the next 8 byte boundary if needed
 381                     if (sp % 8)
 382                     {
 383                         sp >>= 3;
 384                         sp += 1;
 385                         sp <<= 3;
 386                     }
 387                 }
 388             }
 389         }
 390     }
 391     return true;
 392 }
 393
 394 Error
 395 ABISysV_arm64::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp)
 396 {
 397     Error error;
 398     if (!new_value_sp)
 399     {
 400         error.SetErrorString("Empty value object for return value.");
 401         return error;
 402     }
 403
 404     CompilerType return_value_type = new_value_sp->GetCompilerType();
 405     if (!return_value_type)
 406     {
 407         error.SetErrorString ("Null clang type for return value.");
 408         return error;
 409     }
 410
 411     Thread *thread = frame_sp->GetThread().get();
 412
 413     RegisterContext *reg_ctx = thread->GetRegisterContext().get();
 414
 415     if (reg_ctx)
 416     {
 417         DataExtractor data;
 418         Error data_error;
 419         const uint64_t byte_size = new_value_sp->GetData(data, data_error);
 420         if (data_error.Fail())
 421         {
 422             error.SetErrorStringWithFormat("Couldn't convert return value to raw data: %s", data_error.AsCString());
 423             return error;
 424         }
 425
 426         const uint32_t type_flags = return_value_type.GetTypeInfo(nullptr);
 427         if (type_flags & eTypeIsScalar ||
 428             type_flags & eTypeIsPointer)
 429         {
 430             if (type_flags & eTypeIsInteger ||
 431                 type_flags & eTypeIsPointer )
 432             {
 433                 // Extract the register context so we can read arguments from registers
 434                 lldb::offset_t offset = 0;
 435                 if (byte_size <= 16)
 436                 {
 437                     const RegisterInfo *x0_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1);
 438                     if (byte_size <= 8)
 439                     {
 440                         uint64_t raw_value = data.GetMaxU64(&offset, byte_size);
 441
 442                         if (!reg_ctx->WriteRegisterFromUnsigned (x0_info, raw_value))
 443                             error.SetErrorString ("failed to write register x0");
 444                     }
 445                     else
 446                     {
 447                         uint64_t raw_value = data.GetMaxU64(&offset, 8);
 448
 449                         if (reg_ctx->WriteRegisterFromUnsigned (x0_info, raw_value))
 450                         {
 451                             const RegisterInfo *x1_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG2);
 452                             raw_value = data.GetMaxU64(&offset, byte_size - offset);
 453
 454                             if (!reg_ctx->WriteRegisterFromUnsigned (x1_info, raw_value))
 455                                 error.SetErrorString ("failed to write register x1");
 456                         }
 457                     }
 458                 }
 459                 else
 460                 {
 461                     error.SetErrorString("We don't support returning longer than 128 bit integer values at present.");
 462                 }
 463             }
 464             else if (type_flags & eTypeIsFloat)
 465             {
 466                 if (type_flags & eTypeIsComplex)
 467                 {
 468                     // Don't handle complex yet.
 469                     error.SetErrorString ("returning complex float values are not supported");
 470                 }
 471                 else
 472                 {
 473                     const RegisterInfo *v0_info = reg_ctx->GetRegisterInfoByName("v0", 0);
 474
 475                     if (v0_info)
 476                     {
 477                         if (byte_size <= 16)
 478                         {
 479                             if (byte_size <= RegisterValue::GetMaxByteSize())
 480                             {
 481                                 RegisterValue reg_value;
 482                                 error = reg_value.SetValueFromData (v0_info, data, 0, true);
 483                                 if (error.Success())
 484                                 {
 485                                     if (!reg_ctx->WriteRegister (v0_info, reg_value))
 486                                         error.SetErrorString ("failed to write register v0");
 487                                 }
 488                             }
 489                             else
 490                             {
 491                                 error.SetErrorStringWithFormat ("returning float values with a byte size of %" PRIu64 " are not supported", byte_size);
 492                             }
 493                         }
 494                         else
 495                         {
 496                             error.SetErrorString("returning float values longer than 128 bits are not supported");
 497                         }
 498                     }
 499                     else
 500                     {
 501                         error.SetErrorString("v0 register is not available on this target");
 502                     }
 503                 }
 504             }
 505         }
 506         else if (type_flags & eTypeIsVector)
 507         {
 508             if (byte_size > 0)
 509             {
 510                 const RegisterInfo *v0_info = reg_ctx->GetRegisterInfoByName("v0", 0);
 511
 512                 if (v0_info)
 513                 {
 514                     if (byte_size <= v0_info->byte_size)
 515                     {
 516                         RegisterValue reg_value;
 517                         error = reg_value.SetValueFromData (v0_info, data, 0, true);
 518                         if (error.Success())
 519                         {
 520                             if (!reg_ctx->WriteRegister (v0_info, reg_value))
 521                                 error.SetErrorString ("failed to write register v0");
 522                         }
 523                     }
 524                 }
 525             }
 526         }
 527     }
 528     else
 529     {
 530         error.SetErrorString("no registers are available");
 531     }
 532
 533     return error;
 534 }
 535
 536 bool
 537 ABISysV_arm64::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan)
 538 {
 539     unwind_plan.Clear();
 540     unwind_plan.SetRegisterKind (eRegisterKindDWARF);
 541
 542     uint32_t lr_reg_num = arm64_dwarf::lr;
 543     uint32_t sp_reg_num = arm64_dwarf::sp;
 544     uint32_t pc_reg_num = arm64_dwarf::pc;
 545
 546     UnwindPlan::RowSP row(new UnwindPlan::Row);
 547
 548     // Our previous Call Frame Address is the stack pointer
 549     row->GetCFAValue().SetIsRegisterPlusOffset (sp_reg_num, 0);
 550
 551     // Our previous PC is in the LR
 552     row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
 553
 554     unwind_plan.AppendRow (row);
 555
 556     // All other registers are the same.
 557
 558     unwind_plan.SetSourceName ("arm64 at-func-entry default");
 559     unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
 560
 561     return true;
 562 }
 563
 564 bool
 565 ABISysV_arm64::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan)
 566 {
 567     unwind_plan.Clear();
 568     unwind_plan.SetRegisterKind (eRegisterKindDWARF);
 569
 570     uint32_t fp_reg_num = arm64_dwarf::fp;
 571     uint32_t pc_reg_num = arm64_dwarf::pc;
 572
 573     UnwindPlan::RowSP row(new UnwindPlan::Row);
 574     const int32_t ptr_size = 8;
 575
 576     row->GetCFAValue().SetIsRegisterPlusOffset (fp_reg_num, 2 * ptr_size);
 577     row->SetOffset (0);
 578
 579     row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
 580     row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
 581
 582     unwind_plan.AppendRow (row);
 583     unwind_plan.SetSourceName ("arm64 default unwind plan");
 584     unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
 585     unwind_plan.SetUnwindPlanValidAtAllInstructions (eLazyBoolNo);
 586
 587     return true;
 588 }
 589
 590 // AAPCS64 (Procedure Call Standard for the ARM 64-bit Architecture) says
 591 // registers x19 through x28 and sp are callee preserved.
 592 // v8-v15 are non-volatile (and specifically only the lower 8 bytes of these regs),
 593 // the rest of the fp/SIMD registers are volatile.
 594
 595 // We treat x29 as callee preserved also, else the unwinder won't try to
 596 // retrieve fp saves.
 597
 598 bool
 599 ABISysV_arm64::RegisterIsVolatile (const RegisterInfo *reg_info)
 600 {
 601     if (reg_info)
 602     {
 603         const char *name = reg_info->name;
 604
 605         // Sometimes we'll be called with the "alternate" name for these registers;
 606         // recognize them as non-volatile.
 607
 608         if (name[0] == 'p' && name[1] == 'c')        // pc
 609             return false;
 610         if (name[0] == 'f' && name[1] == 'p')        // fp
 611             return false;
 612         if (name[0] == 's' && name[1] == 'p')        // sp
 613             return false;
 614         if (name[0] == 'l' && name[1] == 'r')        // lr
 615             return false;
 616
 617         if (name[0] == 'x')
 618         {
 619             // Volatile registers: x0-x18
 620             // Although documentation says only x19-28 + sp are callee saved
 621             // We ll also have to treat x30 as non-volatile.
 622             // Each dwarf frame has its own value of lr.
 623             // Return false for the non-volatile gpr regs, true for everything else
 624             switch (name[1])
 625             {
 626                 case '1':
 627                     switch (name[2])
 628                     {
 629                         case '9':
 630                             return false;             // x19 is non-volatile
 631                         default:
 632                           return true;
 633                     }
 634                         break;
 635                 case '2':
 636                     switch (name[2])
 637                     {
 638                         case '0':
 639                         case '1':
 640                         case '2':
 641                         case '3':
 642                         case '4':
 643                         case '5':
 644                         case '6':
 645                         case '7':
 646                         case '8':
 647                             return false;             // x20 - 28 are non-volatile
 648                         case '9':
 649                             return false;             // x29 aka fp treat as non-volatile
 650                         default:
 651                             return true;
 652                     }
 653                 case '3':                             // x30 (lr) and x31 (sp) treat as non-volatile
 654                     if (name[2] == '0' || name[2] == '1')
 655                       return false;
 656                     break;
 657                 default:
 658                     return true;                      // all volatile cases not handled above fall here.
 659             }
 660         }
 661         else if (name[0] == 'v' || name[0] == 's' || name[0] == 'd')
 662         {
 663             // Volatile registers: v0-7, v16-v31
 664             // Return false for non-volatile fp/SIMD regs, true for everything else
 665             switch (name[1])
 666             {
 667                 case '8':
 668                 case '9':
 669                     return false; // v8-v9 are non-volatile
 670                 case '1':
 671                     switch (name[2])
 672                     {
 673                         case '0':
 674                         case '1':
 675                         case '2':
 676                         case '3':
 677                         case '4':
 678                         case '5':
 679                             return false; // v10-v15 are non-volatile
 680                         default:
 681                             return true;
 682                     }
 683                 default:
 684                     return true;
 685             }
 686         }
 687     }
 688     return true;
 689 }
 690
 691 static bool
 692 LoadValueFromConsecutiveGPRRegisters (ExecutionContext &exe_ctx,
 693                                       RegisterContext *reg_ctx,
 694                                       const CompilerType &value_type,
 695                                       bool is_return_value, // false => parameter, true => return value
 696                                       uint32_t &NGRN,       // NGRN (see ABI documentation)
 697                                       uint32_t &NSRN,       // NSRN (see ABI documentation)
 698                                       DataExtractor &data)
 699 {
 700     const size_t byte_size = value_type.GetByteSize(nullptr);
 701
 702     if (byte_size == 0)
 703         return false;
 704
 705     std::unique_ptr<DataBufferHeap> heap_data_ap (new DataBufferHeap(byte_size, 0));
 706     const ByteOrder byte_order = exe_ctx.GetProcessRef().GetByteOrder();
 707     Error error;
 708
 709     CompilerType base_type;
 710     const uint32_t homogeneous_count = value_type.IsHomogeneousAggregate (&base_type);
 711     if (homogeneous_count > 0 && homogeneous_count <= 8)
 712     {
 713         // Make sure we have enough registers
 714         if (NSRN < 8 && (8-NSRN) >= homogeneous_count)
 715         {
 716             if (!base_type)
 717                 return false;
 718             const size_t base_byte_size = base_type.GetByteSize(nullptr);
 719             uint32_t data_offset = 0;
 720
 721             for (uint32_t i=0; i<homogeneous_count; ++i)
 722             {
 723                 char v_name[8];
 724                 ::snprintf (v_name, sizeof(v_name), "v%u", NSRN);
 725                 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName(v_name, 0);
 726                 if (reg_info == nullptr)
 727                     return false;
 728
 729                 if (base_byte_size > reg_info->byte_size)
 730                     return false;
 731
 732                 RegisterValue reg_value;
 733
 734                 if (!reg_ctx->ReadRegister(reg_info, reg_value))
 735                     return false;
 736
 737                 // Make sure we have enough room in "heap_data_ap"
 738                 if ((data_offset + base_byte_size) <= heap_data_ap->GetByteSize())
 739                 {
 740                     const size_t bytes_copied = reg_value.GetAsMemoryData (reg_info,
 741                                                                            heap_data_ap->GetBytes()+data_offset,
 742                                                                            base_byte_size,
 743                                                                            byte_order,
 744                                                                            error);
 745                     if (bytes_copied != base_byte_size)
 746                         return false;
 747                     data_offset += bytes_copied;
 748                     ++NSRN;
 749                 }
 750                 else
 751                     return false;
 752             }
 753             data.SetByteOrder(byte_order);
 754             data.SetAddressByteSize(exe_ctx.GetProcessRef().GetAddressByteSize());
 755             data.SetData(DataBufferSP (heap_data_ap.release()));
 756             return true;
 757         }
 758     }
 759
 760     const size_t max_reg_byte_size = 16;
 761     if (byte_size <= max_reg_byte_size)
 762     {
 763         size_t bytes_left = byte_size;
 764         uint32_t data_offset = 0;
 765         while (data_offset < byte_size)
 766         {
 767             if (NGRN >= 8)
 768                 return false;
 769
 770             const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + NGRN);
 771             if (reg_info == nullptr)
 772                 return false;
 773
 774             RegisterValue reg_value;
 775
 776             if (!reg_ctx->ReadRegister(reg_info, reg_value))
 777                 return false;
 778
 779             const size_t curr_byte_size = std::min<size_t>(8,bytes_left);
 780             const size_t bytes_copied = reg_value.GetAsMemoryData (reg_info, heap_data_ap->GetBytes()+data_offset, curr_byte_size, byte_order, error);
 781             if (bytes_copied == 0)
 782                 return false;
 783             if (bytes_copied >= bytes_left)
 784                 break;
 785             data_offset += bytes_copied;
 786             bytes_left -= bytes_copied;
 787             ++NGRN;
 788         }
 789     }
 790     else
 791     {
 792         const RegisterInfo *reg_info = nullptr;
 793         if (is_return_value)
 794         {
 795             // We are assuming we are decoding this immediately after returning
 796             // from a function call and that the address of the structure is in x8
 797             reg_info = reg_ctx->GetRegisterInfoByName("x8", 0);
 798         }
 799         else
 800         {
 801             // We are assuming we are stopped at the first instruction in a function
 802             // and that the ABI is being respected so all parameters appear where they
 803             // should be (functions with no external linkage can legally violate the ABI).
 804             if (NGRN >= 8)
 805                 return false;
 806
 807             reg_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + NGRN);
 808             if (reg_info == nullptr)
 809                 return false;
 810             ++NGRN;
 811         }
 812
 813         if (reg_info == nullptr)
 814             return false;
 815
 816         const lldb::addr_t value_addr = reg_ctx->ReadRegisterAsUnsigned(reg_info, LLDB_INVALID_ADDRESS);
 817
 818         if (value_addr == LLDB_INVALID_ADDRESS)
 819             return false;
 820
 821         if (exe_ctx.GetProcessRef().ReadMemory (value_addr,
 822                                                 heap_data_ap->GetBytes(),
 823                                                 heap_data_ap->GetByteSize(),
 824                                                 error) != heap_data_ap->GetByteSize())
 825         {
 826             return false;
 827         }
 828     }
 829
 830     data.SetByteOrder(byte_order);
 831     data.SetAddressByteSize(exe_ctx.GetProcessRef().GetAddressByteSize());
 832     data.SetData(DataBufferSP (heap_data_ap.release()));
 833     return true;
 834 }
 835
 836 ValueObjectSP
 837 ABISysV_arm64::GetReturnValueObjectImpl (Thread &thread, CompilerType &return_compiler_type) const
 838 {
 839     ValueObjectSP return_valobj_sp;
 840     Value value;
 841
 842     ExecutionContext exe_ctx (thread.shared_from_this());
 843     if (exe_ctx.GetTargetPtr() == nullptr || exe_ctx.GetProcessPtr() == nullptr)
 844         return return_valobj_sp;
 845
 846     //value.SetContext (Value::eContextTypeClangType, return_compiler_type);
 847     value.SetCompilerType(return_compiler_type);
 848
 849     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 850     if (!reg_ctx)
 851         return return_valobj_sp;
 852
 853     const size_t byte_size = return_compiler_type.GetByteSize(nullptr);
 854
 855     const uint32_t type_flags = return_compiler_type.GetTypeInfo(nullptr);
 856     if (type_flags & eTypeIsScalar ||
 857         type_flags & eTypeIsPointer)
 858     {
 859         value.SetValueType(Value::eValueTypeScalar);
 860
 861         bool success = false;
 862         if (type_flags & eTypeIsInteger ||
 863             type_flags & eTypeIsPointer )
 864         {
 865             // Extract the register context so we can read arguments from registers
 866             if (byte_size <= 8)
 867             {
 868                 const RegisterInfo *x0_reg_info = nullptr;
 869                 x0_reg_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1);
 870                 if (x0_reg_info)
 871                 {
 872                     uint64_t raw_value = thread.GetRegisterContext()->ReadRegisterAsUnsigned(x0_reg_info, 0);
 873                     const bool is_signed = (type_flags & eTypeIsSigned) != 0;
 874                     switch (byte_size)
 875                     {
 876                         default:
 877                             break;
 878                         case 16: // uint128_t
 879                             // In register x0 and x1
 880                             {
 881                                 const RegisterInfo *x1_reg_info = nullptr;
 882                                 x1_reg_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG2);
 883
 884                                 if (x1_reg_info)
 885                                 {
 886                                     if (byte_size <= x0_reg_info->byte_size + x1_reg_info->byte_size)
 887                                     {
 888                                         std::unique_ptr<DataBufferHeap> heap_data_ap (new DataBufferHeap(byte_size, 0));
 889                                         const ByteOrder byte_order = exe_ctx.GetProcessRef().GetByteOrder();
 890                                         RegisterValue x0_reg_value;
 891                                         RegisterValue x1_reg_value;
 892                                         if (reg_ctx->ReadRegister(x0_reg_info, x0_reg_value) &&
 893                                             reg_ctx->ReadRegister(x1_reg_info, x1_reg_value))
 894                                         {
 895                                             Error error;
 896                                             if (x0_reg_value.GetAsMemoryData (x0_reg_info, heap_data_ap->GetBytes()+0, 8, byte_order, error) &&
 897                                                 x1_reg_value.GetAsMemoryData (x1_reg_info, heap_data_ap->GetBytes()+8, 8, byte_order, error))
 898                                             {
 899                                                 DataExtractor data (DataBufferSP (heap_data_ap.release()),
 900                                                                     byte_order,
 901                                                                     exe_ctx.GetProcessRef().GetAddressByteSize());
 902
 903                                                 return_valobj_sp = ValueObjectConstResult::Create (&thread,
 904                                                                                                    return_compiler_type,
 905                                                                                                    ConstString(""),
 906                                                                                                    data);
 907                                                 return return_valobj_sp;
 908                                             }
 909                                         }
 910                                     }
 911                                 }
 912                             }
 913                             break;
 914                         case sizeof(uint64_t):
 915                             if (is_signed)
 916                                 value.GetScalar() = (int64_t)(raw_value);
 917                             else
 918                                 value.GetScalar() = (uint64_t)(raw_value);
 919                             success = true;
 920                             break;
 921
 922                         case sizeof(uint32_t):
 923                             if (is_signed)
 924                                 value.GetScalar() = (int32_t)(raw_value & UINT32_MAX);
 925                             else
 926                                 value.GetScalar() = (uint32_t)(raw_value & UINT32_MAX);
 927                             success = true;
 928                             break;
 929
 930                         case sizeof(uint16_t):
 931                             if (is_signed)
 932                                 value.GetScalar() = (int16_t)(raw_value & UINT16_MAX);
 933                             else
 934                                 value.GetScalar() = (uint16_t)(raw_value & UINT16_MAX);
 935                             success = true;
 936                             break;
 937
 938                         case sizeof(uint8_t):
 939                             if (is_signed)
 940                                 value.GetScalar() = (int8_t)(raw_value & UINT8_MAX);
 941                             else
 942                                 value.GetScalar() = (uint8_t)(raw_value & UINT8_MAX);
 943                             success = true;
 944                             break;
 945                     }
 946                 }
 947             }
 948         }
 949         else if (type_flags & eTypeIsFloat)
 950         {
 951             if (type_flags & eTypeIsComplex)
 952             {
 953                 // Don't handle complex yet.
 954             }
 955             else
 956             {
 957                 if (byte_size <= sizeof(long double))
 958                 {
 959                     const RegisterInfo *v0_reg_info = reg_ctx->GetRegisterInfoByName("v0", 0);
 960                     RegisterValue v0_value;
 961                     if (reg_ctx->ReadRegister (v0_reg_info, v0_value))
 962                     {
 963                         DataExtractor data;
 964                         if (v0_value.GetData(data))
 965                         {
 966                             lldb::offset_t offset = 0;
 967                             if (byte_size == sizeof(float))
 968                             {
 969                                 value.GetScalar() = data.GetFloat(&offset);
 970                                 success = true;
 971                             }
 972                             else if (byte_size == sizeof(double))
 973                             {
 974                                 value.GetScalar() = data.GetDouble(&offset);
 975                                 success = true;
 976                             }
 977                             else if (byte_size == sizeof(long double))
 978                             {
 979                                 value.GetScalar() = data.GetLongDouble(&offset);
 980                                 success = true;
 981                             }
 982                         }
 983                     }
 984                 }
 985             }
 986         }
 987
 988         if (success)
 989             return_valobj_sp = ValueObjectConstResult::Create (thread.GetStackFrameAtIndex(0).get(),
 990                                                                value,
 991                                                                ConstString(""));
 992     }
 993     else if (type_flags & eTypeIsVector)
 994     {
 995         if (byte_size > 0)
 996         {
 997             const RegisterInfo *v0_info = reg_ctx->GetRegisterInfoByName("v0", 0);
 998
 999             if (v0_info)
1000             {
1001                 if (byte_size <= v0_info->byte_size)
1002                 {
1003                     std::unique_ptr<DataBufferHeap> heap_data_ap (new DataBufferHeap(byte_size, 0));
1004                     const ByteOrder byte_order = exe_ctx.GetProcessRef().GetByteOrder();
1005                     RegisterValue reg_value;
1006                     if (reg_ctx->ReadRegister(v0_info, reg_value))
1007                     {
1008                         Error error;
1009                         if (reg_value.GetAsMemoryData (v0_info,
1010                                                        heap_data_ap->GetBytes(),
1011                                                        heap_data_ap->GetByteSize(),
1012                                                        byte_order,
1013                                                        error))
1014                         {
1015                             DataExtractor data (DataBufferSP (heap_data_ap.release()),
1016                                                 byte_order,
1017                                                 exe_ctx.GetProcessRef().GetAddressByteSize());
1018                             return_valobj_sp = ValueObjectConstResult::Create (&thread,
1019                                                                                return_compiler_type,
1020                                                                                ConstString(""),
1021                                                                                data);
1022                         }
1023                     }
1024                 }
1025             }
1026         }
1027     }
1028     else if (type_flags & eTypeIsStructUnion ||
1029              type_flags & eTypeIsClass)
1030     {
1031         DataExtractor data;
1032
1033         uint32_t NGRN = 0;  // Search ABI docs for NGRN
1034         uint32_t NSRN = 0;  // Search ABI docs for NSRN
1035         const bool is_return_value = true;
1036         if (LoadValueFromConsecutiveGPRRegisters (exe_ctx, reg_ctx, return_compiler_type, is_return_value, NGRN, NSRN, data))
1037         {
1038             return_valobj_sp = ValueObjectConstResult::Create (&thread,
1039                                                                return_compiler_type,
1040                                                                ConstString(""),
1041                                                                data);
1042         }
1043     }
1044     return return_valobj_sp;
1045 }
1046
1047 void
1048 ABISysV_arm64::Initialize()
1049 {
1050     PluginManager::RegisterPlugin (GetPluginNameStatic(),
1051                                    "SysV ABI for AArch64 targets",
1052                                    CreateInstance);
1053 }
1054
1055 void
1056 ABISysV_arm64::Terminate()
1057 {
1058     PluginManager::UnregisterPlugin (CreateInstance);
1059 }
1060
1061 lldb_private::ConstString
1062 ABISysV_arm64::GetPluginNameStatic()
1063 {
1064     static ConstString g_name("SysV-arm64");
1065     return g_name;
1066 }
1067
1068 //------------------------------------------------------------------
1069 // PluginInterface protocol
1070 //------------------------------------------------------------------
1071
1072 ConstString
1073 ABISysV_arm64::GetPluginName()
1074 {
1075     return GetPluginNameStatic();
1076 }
1077
1078 uint32_t
1079 ABISysV_arm64::GetPluginVersion()
1080 {
1081     return 1;
1082 }