contrib/llvm/tools/lldb/source/Plugins/ABI/MacOSX-arm/ABIMacOSX_arm.cpp

   1 //===-- ABIMacOSX_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 "ABIMacOSX_arm.h"
  11
  12 #include "lldb/Core/ConstString.h"
  13 #include "lldb/Core/Error.h"
  14 #include "lldb/Core/Module.h"
  15 #include "lldb/Core/PluginManager.h"
  16 #include "lldb/Core/RegisterValue.h"
  17 #include "lldb/Core/Scalar.h"
  18 #include "lldb/Core/Value.h"
  19 #include "lldb/Core/ValueObjectConstResult.h"
  20 #include "lldb/Symbol/ClangASTContext.h"
  21 #include "lldb/Symbol/UnwindPlan.h"
  22 #include "lldb/Target/Process.h"
  23 #include "lldb/Target/RegisterContext.h"
  24 #include "lldb/Target/Target.h"
  25 #include "lldb/Target/Thread.h"
  26
  27 #include "llvm/ADT/Triple.h"
  28
  29 #include "Utility/ARM_DWARF_Registers.h"
  30 #include "Utility/ARM_GCC_Registers.h"
  31 #include "Plugins/Process/Utility/ARMDefines.h"
  32
  33 #include <vector>
  34
  35 using namespace lldb;
  36 using namespace lldb_private;
  37
  38 static RegisterInfo g_register_infos[] =
  39 {
  40     //  NAME       ALT       SZ OFF ENCODING         FORMAT          COMPILER                DWARF               GENERIC                     GDB                     LLDB NATIVE            VALUE REGS    INVALIDATE REGS
  41     //  ========== =======   == === =============    ============    ======================= =================== =========================== ======================= ====================== ==========    ===============
  42     {   "r0",      "arg1",    4, 0, eEncodingUint    , eFormatHex,   { gcc_r0,               dwarf_r0,           LLDB_REGNUM_GENERIC_ARG1,   gdb_arm_r0,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  43     {   "r1",      "arg2",    4, 0, eEncodingUint    , eFormatHex,   { gcc_r1,               dwarf_r1,           LLDB_REGNUM_GENERIC_ARG2,   gdb_arm_r1,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  44     {   "r2",      "arg3",    4, 0, eEncodingUint    , eFormatHex,   { gcc_r2,               dwarf_r2,           LLDB_REGNUM_GENERIC_ARG3,   gdb_arm_r2,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  45     {   "r3",      "arg4",    4, 0, eEncodingUint    , eFormatHex,   { gcc_r3,               dwarf_r3,           LLDB_REGNUM_GENERIC_ARG4,   gdb_arm_r3,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  46     {   "r4",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r4,               dwarf_r4,           LLDB_INVALID_REGNUM,        gdb_arm_r4,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  47     {   "r5",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r5,               dwarf_r5,           LLDB_INVALID_REGNUM,        gdb_arm_r5,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  48     {   "r6",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r6,               dwarf_r6,           LLDB_INVALID_REGNUM,        gdb_arm_r6,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  49     {   "r7",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r7,               dwarf_r7,           LLDB_REGNUM_GENERIC_FP,     gdb_arm_r7,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  50     {   "r8",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r8,               dwarf_r8,           LLDB_INVALID_REGNUM,        gdb_arm_r8,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  51     {   "r9",      NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r9,               dwarf_r9,           LLDB_INVALID_REGNUM,        gdb_arm_r9,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  52     {   "r10",     NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r10,              dwarf_r10,          LLDB_INVALID_REGNUM,        gdb_arm_r10,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  53     {   "r11",     NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r11,              dwarf_r11,          LLDB_INVALID_REGNUM,        gdb_arm_r11,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  54     {   "r12",     NULL,      4, 0, eEncodingUint    , eFormatHex,   { gcc_r12,              dwarf_r12,          LLDB_INVALID_REGNUM,        gdb_arm_r12,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  55     {   "sp",      "r13",     4, 0, eEncodingUint    , eFormatHex,   { gcc_sp,               dwarf_sp,           LLDB_REGNUM_GENERIC_SP,     gdb_arm_sp,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  56     {   "lr",      "r14",     4, 0, eEncodingUint    , eFormatHex,   { gcc_lr,               dwarf_lr,           LLDB_REGNUM_GENERIC_RA,     gdb_arm_lr,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  57     {   "pc",      "r15",     4, 0, eEncodingUint    , eFormatHex,   { gcc_pc,               dwarf_pc,           LLDB_REGNUM_GENERIC_PC,     gdb_arm_pc,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  58     {   "cpsr",    "psr",     4, 0, eEncodingUint    , eFormatHex,   { gcc_cpsr,             dwarf_cpsr,         LLDB_REGNUM_GENERIC_FLAGS,  gdb_arm_cpsr,           LLDB_INVALID_REGNUM },      NULL,              NULL},
  59     {   "s0",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s0,           LLDB_INVALID_REGNUM,        gdb_arm_s0,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  60     {   "s1",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s1,           LLDB_INVALID_REGNUM,        gdb_arm_s1,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  61     {   "s2",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s2,           LLDB_INVALID_REGNUM,        gdb_arm_s2,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  62     {   "s3",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s3,           LLDB_INVALID_REGNUM,        gdb_arm_s3,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  63     {   "s4",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s4,           LLDB_INVALID_REGNUM,        gdb_arm_s4,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  64     {   "s5",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s5,           LLDB_INVALID_REGNUM,        gdb_arm_s5,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  65     {   "s6",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s6,           LLDB_INVALID_REGNUM,        gdb_arm_s6,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  66     {   "s7",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s7,           LLDB_INVALID_REGNUM,        gdb_arm_s7,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  67     {   "s8",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s8,           LLDB_INVALID_REGNUM,        gdb_arm_s8,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  68     {   "s9",      NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s9,           LLDB_INVALID_REGNUM,        gdb_arm_s9,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  69     {   "s10",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s10,          LLDB_INVALID_REGNUM,        gdb_arm_s10,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  70     {   "s11",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s11,          LLDB_INVALID_REGNUM,        gdb_arm_s11,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  71     {   "s12",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s12,          LLDB_INVALID_REGNUM,        gdb_arm_s12,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  72     {   "s13",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s13,          LLDB_INVALID_REGNUM,        gdb_arm_s13,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  73     {   "s14",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s14,          LLDB_INVALID_REGNUM,        gdb_arm_s14,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  74     {   "s15",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s15,          LLDB_INVALID_REGNUM,        gdb_arm_s15,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  75     {   "s16",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s16,          LLDB_INVALID_REGNUM,        gdb_arm_s16,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  76     {   "s17",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s17,          LLDB_INVALID_REGNUM,        gdb_arm_s17,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  77     {   "s18",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s18,          LLDB_INVALID_REGNUM,        gdb_arm_s18,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  78     {   "s19",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s19,          LLDB_INVALID_REGNUM,        gdb_arm_s19,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  79     {   "s20",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s20,          LLDB_INVALID_REGNUM,        gdb_arm_s20,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  80     {   "s21",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s21,          LLDB_INVALID_REGNUM,        gdb_arm_s21,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  81     {   "s22",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s22,          LLDB_INVALID_REGNUM,        gdb_arm_s22,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  82     {   "s23",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s23,          LLDB_INVALID_REGNUM,        gdb_arm_s23,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  83     {   "s24",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s24,          LLDB_INVALID_REGNUM,        gdb_arm_s24,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  84     {   "s25",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s25,          LLDB_INVALID_REGNUM,        gdb_arm_s25,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  85     {   "s26",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s26,          LLDB_INVALID_REGNUM,        gdb_arm_s26,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  86     {   "s27",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s27,          LLDB_INVALID_REGNUM,        gdb_arm_s27,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  87     {   "s28",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s28,          LLDB_INVALID_REGNUM,        gdb_arm_s28,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  88     {   "s29",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s29,          LLDB_INVALID_REGNUM,        gdb_arm_s29,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  89     {   "s30",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s30,          LLDB_INVALID_REGNUM,        gdb_arm_s30,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  90     {   "s31",     NULL,      4, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_s31,          LLDB_INVALID_REGNUM,        gdb_arm_s31,            LLDB_INVALID_REGNUM },      NULL,              NULL},
  91     {   "fpscr",   NULL,      4, 0, eEncodingUint    , eFormatHex  , { LLDB_INVALID_REGNUM,  LLDB_INVALID_REGNUM,LLDB_INVALID_REGNUM,        gdb_arm_fpscr,          LLDB_INVALID_REGNUM },      NULL,              NULL},
  92     {   "d0",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d0,           LLDB_INVALID_REGNUM,        gdb_arm_d0,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  93     {   "d1",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d1,           LLDB_INVALID_REGNUM,        gdb_arm_d1,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  94     {   "d2",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d2,           LLDB_INVALID_REGNUM,        gdb_arm_d2,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  95     {   "d3",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d3,           LLDB_INVALID_REGNUM,        gdb_arm_d3,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  96     {   "d4",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d4,           LLDB_INVALID_REGNUM,        gdb_arm_d4,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  97     {   "d5",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d5,           LLDB_INVALID_REGNUM,        gdb_arm_d5,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  98     {   "d6",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d6,           LLDB_INVALID_REGNUM,        gdb_arm_d6,             LLDB_INVALID_REGNUM },      NULL,              NULL},
  99     {   "d7",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d7,           LLDB_INVALID_REGNUM,        gdb_arm_d7,             LLDB_INVALID_REGNUM },      NULL,              NULL},
 100     {   "d8",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d8,           LLDB_INVALID_REGNUM,        gdb_arm_d8,             LLDB_INVALID_REGNUM },      NULL,              NULL},
 101     {   "d9",      NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d9,           LLDB_INVALID_REGNUM,        gdb_arm_d9,             LLDB_INVALID_REGNUM },      NULL,              NULL},
 102     {   "d10",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d10,          LLDB_INVALID_REGNUM,        gdb_arm_d10,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 103     {   "d11",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d11,          LLDB_INVALID_REGNUM,        gdb_arm_d11,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 104     {   "d12",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d12,          LLDB_INVALID_REGNUM,        gdb_arm_d12,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 105     {   "d13",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d13,          LLDB_INVALID_REGNUM,        gdb_arm_d13,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 106     {   "d14",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d14,          LLDB_INVALID_REGNUM,        gdb_arm_d14,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 107     {   "d15",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d15,          LLDB_INVALID_REGNUM,        gdb_arm_d15,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 108     {   "d16",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d16,          LLDB_INVALID_REGNUM,        gdb_arm_d16,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 109     {   "d17",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d17,          LLDB_INVALID_REGNUM,        gdb_arm_d17,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 110     {   "d18",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d18,          LLDB_INVALID_REGNUM,        gdb_arm_d18,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 111     {   "d19",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d19,          LLDB_INVALID_REGNUM,        gdb_arm_d19,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 112     {   "d20",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d20,          LLDB_INVALID_REGNUM,        gdb_arm_d20,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 113     {   "d21",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d21,          LLDB_INVALID_REGNUM,        gdb_arm_d21,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 114     {   "d22",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d22,          LLDB_INVALID_REGNUM,        gdb_arm_d22,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 115     {   "d23",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d23,          LLDB_INVALID_REGNUM,        gdb_arm_d23,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 116     {   "d24",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d24,          LLDB_INVALID_REGNUM,        gdb_arm_d24,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 117     {   "d25",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d25,          LLDB_INVALID_REGNUM,        gdb_arm_d25,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 118     {   "d26",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d26,          LLDB_INVALID_REGNUM,        gdb_arm_d26,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 119     {   "d27",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d27,          LLDB_INVALID_REGNUM,        gdb_arm_d27,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 120     {   "d28",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d28,          LLDB_INVALID_REGNUM,        gdb_arm_d28,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 121     {   "d29",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d29,          LLDB_INVALID_REGNUM,        gdb_arm_d29,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 122     {   "d30",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d30,          LLDB_INVALID_REGNUM,        gdb_arm_d30,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 123     {   "d31",     NULL,      8, 0, eEncodingIEEE754 , eFormatFloat, { LLDB_INVALID_REGNUM,  dwarf_d31,          LLDB_INVALID_REGNUM,        gdb_arm_d31,            LLDB_INVALID_REGNUM },      NULL,              NULL},
 124     {   "r8_usr",  NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r8_usr,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 125     {   "r9_usr",  NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r9_usr,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 126     {   "r10_usr", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r10_usr,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 127     {   "r11_usr", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r11_usr,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 128     {   "r12_usr", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r12_usr,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 129     {   "r13_usr", "sp_usr",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_usr,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 130     {   "r14_usr", "lr_usr",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_usr,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 131     {   "r8_fiq",  NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r8_fiq,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 132     {   "r9_fiq",  NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r9_fiq,       LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 133     {   "r10_fiq", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r10_fiq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 134     {   "r11_fiq", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r11_fiq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 135     {   "r12_fiq", NULL,      4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r12_fiq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 136     {   "r13_fiq", "sp_fiq",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_fiq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 137     {   "r14_fiq", "lr_fiq",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_fiq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 138     {   "r13_irq", "sp_irq",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_irq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 139     {   "r14_irq", "lr_irq",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_irq,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 140     {   "r13_abt", "sp_abt",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_abt,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 141     {   "r14_abt", "lr_abt",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_abt,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 142     {   "r13_und", "sp_und",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_und,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 143     {   "r14_und", "lr_und",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_und,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 144     {   "r13_svc", "sp_svc",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r13_svc,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL},
 145     {   "r14_svc", "lr_svc",  4, 0, eEncodingUint    , eFormatHex,   { LLDB_INVALID_REGNUM,  dwarf_r14_svc,      LLDB_INVALID_REGNUM,        LLDB_INVALID_REGNUM,    LLDB_INVALID_REGNUM },      NULL,              NULL}
 146 };
 147 static const uint32_t k_num_register_infos = sizeof(g_register_infos)/sizeof(RegisterInfo);
 148 static bool g_register_info_names_constified = false;
 149
 150 const lldb_private::RegisterInfo *
 151 ABIMacOSX_arm::GetRegisterInfoArray (uint32_t &count)
 152 {
 153     // Make the C-string names and alt_names for the register infos into const
 154     // C-string values by having the ConstString unique the names in the global
 155     // constant C-string pool.
 156     if (!g_register_info_names_constified)
 157     {
 158         g_register_info_names_constified = true;
 159         for (uint32_t i=0; i<k_num_register_infos; ++i)
 160         {
 161             if (g_register_infos[i].name)
 162                 g_register_infos[i].name = ConstString(g_register_infos[i].name).GetCString();
 163             if (g_register_infos[i].alt_name)
 164                 g_register_infos[i].alt_name = ConstString(g_register_infos[i].alt_name).GetCString();
 165         }
 166     }
 167     count = k_num_register_infos;
 168     return g_register_infos;
 169 }
 170
 171
 172 size_t
 173 ABIMacOSX_arm::GetRedZoneSize () const
 174 {
 175     return 0;
 176 }
 177
 178 //------------------------------------------------------------------
 179 // Static Functions
 180 //------------------------------------------------------------------
 181 ABISP
 182 ABIMacOSX_arm::CreateInstance (const ArchSpec &arch)
 183 {
 184     static ABISP g_abi_sp;
 185     const llvm::Triple::ArchType arch_type = arch.GetTriple().getArch();
 186     if ((arch_type == llvm::Triple::arm) ||
 187         (arch_type == llvm::Triple::thumb))
 188     {
 189         if (!g_abi_sp)
 190             g_abi_sp.reset (new ABIMacOSX_arm);
 191         return g_abi_sp;
 192     }
 193     return ABISP();
 194 }
 195
 196 bool
 197 ABIMacOSX_arm::PrepareTrivialCall (Thread &thread,
 198                                    addr_t sp,
 199                                    addr_t function_addr,
 200                                    addr_t return_addr,
 201                                    llvm::ArrayRef<addr_t> args) const
 202 {
 203     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 204     if (!reg_ctx)
 205         return false;
 206
 207     const uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC);
 208     const uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP);
 209     const uint32_t ra_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA);
 210
 211     RegisterValue reg_value;
 212
 213     const char *reg_names[] = { "r0", "r1", "r2", "r3" };
 214
 215     llvm::ArrayRef<addr_t>::iterator ai = args.begin(), ae = args.end();
 216
 217     for (size_t i = 0; i < (sizeof(reg_names) / sizeof(reg_names[0])); ++i)
 218     {
 219         if (ai == ae)
 220             break;
 221
 222         reg_value.SetUInt32(*ai);
 223         if (!reg_ctx->WriteRegister(reg_ctx->GetRegisterInfoByName(reg_names[i]), reg_value))
 224             return false;
 225
 226         ++ai;
 227     }
 228
 229     if (ai != ae)
 230     {
 231         // Spill onto the stack
 232         size_t num_stack_regs = ae - ai;
 233
 234         sp -= (num_stack_regs * 4);
 235         // Keep the stack 8 byte aligned, not that we need to
 236         sp &= ~(8ull-1ull);
 237
 238         // just using arg1 to get the right size
 239         const RegisterInfo *reg_info = reg_ctx->GetRegisterInfo(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1);
 240
 241         addr_t arg_pos = sp;
 242
 243         for (; ai != ae; ++ai)
 244         {
 245             reg_value.SetUInt32(*ai);
 246             if (reg_ctx->WriteRegisterValueToMemory(reg_info, arg_pos, reg_info->byte_size, reg_value).Fail())
 247                 return false;
 248             arg_pos += reg_info->byte_size;
 249         }
 250     }
 251
 252     TargetSP target_sp (thread.CalculateTarget());
 253     Address so_addr;
 254
 255     // Figure out if our return address is ARM or Thumb by using the
 256     // Address::GetCallableLoadAddress(Target*) which will figure out the ARM
 257     // thumb-ness and set the correct address bits for us.
 258     so_addr.SetLoadAddress (return_addr, target_sp.get());
 259     return_addr = so_addr.GetCallableLoadAddress (target_sp.get());
 260
 261     // Set "lr" to the return address
 262     if (!reg_ctx->WriteRegisterFromUnsigned (ra_reg_num, return_addr))
 263         return false;
 264
 265     // Set "sp" to the requested value
 266     if (!reg_ctx->WriteRegisterFromUnsigned (sp_reg_num, sp))
 267         return false;
 268
 269     // If bit zero or 1 is set, this must be a thumb function, no need to figure
 270     // this out from the symbols.
 271     so_addr.SetLoadAddress (function_addr, target_sp.get());
 272     function_addr = so_addr.GetCallableLoadAddress (target_sp.get());
 273
 274     const RegisterInfo *cpsr_reg_info = reg_ctx->GetRegisterInfoByName("cpsr");
 275     const uint32_t curr_cpsr = reg_ctx->ReadRegisterAsUnsigned(cpsr_reg_info, 0);
 276
 277     // Make a new CPSR and mask out any Thumb IT (if/then) bits
 278     uint32_t new_cpsr = curr_cpsr & ~MASK_CPSR_IT_MASK;
 279     // If bit zero or 1 is set, this must be thumb...
 280     if (function_addr & 1ull)
 281         new_cpsr |= MASK_CPSR_T;    // Set T bit in CPSR
 282     else
 283         new_cpsr &= ~MASK_CPSR_T;   // Clear T bit in CPSR
 284
 285     if (new_cpsr != curr_cpsr)
 286     {
 287         if (!reg_ctx->WriteRegisterFromUnsigned (cpsr_reg_info, new_cpsr))
 288             return false;
 289     }
 290
 291     function_addr &= ~1ull;   // clear bit zero since the CPSR will take care of the mode for us
 292
 293     // Set "pc" to the address requested
 294     if (!reg_ctx->WriteRegisterFromUnsigned (pc_reg_num, function_addr))
 295         return false;
 296
 297     return true;
 298 }
 299
 300 bool
 301 ABIMacOSX_arm::GetArgumentValues (Thread &thread,
 302                                   ValueList &values) const
 303 {
 304     uint32_t num_values = values.GetSize();
 305
 306
 307     ExecutionContext exe_ctx (thread.shared_from_this());
 308     // For now, assume that the types in the AST values come from the Target's
 309     // scratch AST.
 310
 311     // Extract the register context so we can read arguments from registers
 312
 313     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 314
 315     if (!reg_ctx)
 316         return false;
 317
 318     addr_t sp = 0;
 319
 320     for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx)
 321     {
 322         // We currently only support extracting values with Clang QualTypes.
 323         // Do we care about others?
 324         Value *value = values.GetValueAtIndex(value_idx);
 325
 326         if (!value)
 327             return false;
 328
 329         ClangASTType clang_type = value->GetClangType();
 330         if (clang_type)
 331         {
 332             bool is_signed = false;
 333             size_t bit_width = 0;
 334             if (clang_type.IsIntegerType (is_signed))
 335             {
 336                 bit_width = clang_type.GetBitSize();
 337             }
 338             else if (clang_type.IsPointerOrReferenceType ())
 339             {
 340                 bit_width = clang_type.GetBitSize();
 341             }
 342             else
 343             {
 344                 // We only handle integer, pointer and reference types currently...
 345                 return false;
 346             }
 347
 348             if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8))
 349             {
 350                 if (value_idx < 4)
 351                 {
 352                     // Arguments 1-4 are in r0-r3...
 353                     const RegisterInfo *arg_reg_info = NULL;
 354                     // Search by generic ID first, then fall back to by name
 355                     uint32_t arg_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + value_idx);
 356                     if (arg_reg_num != LLDB_INVALID_REGNUM)
 357                     {
 358                         arg_reg_info = reg_ctx->GetRegisterInfoAtIndex(arg_reg_num);
 359                     }
 360                     else
 361                     {
 362                         switch (value_idx)
 363                         {
 364                             case 0: arg_reg_info = reg_ctx->GetRegisterInfoByName("r0"); break;
 365                             case 1: arg_reg_info = reg_ctx->GetRegisterInfoByName("r1"); break;
 366                             case 2: arg_reg_info = reg_ctx->GetRegisterInfoByName("r2"); break;
 367                             case 3: arg_reg_info = reg_ctx->GetRegisterInfoByName("r3"); break;
 368                         }
 369                     }
 370
 371                     if (arg_reg_info)
 372                     {
 373                         RegisterValue reg_value;
 374
 375                         if (reg_ctx->ReadRegister(arg_reg_info, reg_value))
 376                         {
 377                             if (is_signed)
 378                                 reg_value.SignExtend(bit_width);
 379                             if (!reg_value.GetScalarValue(value->GetScalar()))
 380                                 return false;
 381                             continue;
 382                         }
 383                     }
 384                     return false;
 385                 }
 386                 else
 387                 {
 388                     if (sp == 0)
 389                     {
 390                         // Read the stack pointer if it already hasn't been read
 391                         sp = reg_ctx->GetSP(0);
 392                         if (sp == 0)
 393                             return false;
 394                     }
 395
 396                     // Arguments 5 on up are on the stack
 397                     const uint32_t arg_byte_size = (bit_width + (8-1)) / 8;
 398                     Error error;
 399                     if (!exe_ctx.GetProcessRef().ReadScalarIntegerFromMemory(sp, arg_byte_size, is_signed, value->GetScalar(), error))
 400                         return false;
 401
 402                     sp += arg_byte_size;
 403                 }
 404             }
 405         }
 406     }
 407     return true;
 408 }
 409
 410 ValueObjectSP
 411 ABIMacOSX_arm::GetReturnValueObjectImpl (Thread &thread,
 412                                          lldb_private::ClangASTType &clang_type) const
 413 {
 414     Value value;
 415     ValueObjectSP return_valobj_sp;
 416
 417     if (!clang_type)
 418         return return_valobj_sp;
 419
 420     clang::ASTContext *ast_context = clang_type.GetASTContext();
 421     if (!ast_context)
 422         return return_valobj_sp;
 423
 424     //value.SetContext (Value::eContextTypeClangType, clang_type.GetOpaqueQualType());
 425     value.SetClangType (clang_type);
 426
 427     RegisterContext *reg_ctx = thread.GetRegisterContext().get();
 428     if (!reg_ctx)
 429         return return_valobj_sp;
 430
 431     bool is_signed;
 432
 433     // Get the pointer to the first stack argument so we have a place to start
 434     // when reading data
 435
 436     const RegisterInfo *r0_reg_info = reg_ctx->GetRegisterInfoByName("r0", 0);
 437     if (clang_type.IsIntegerType (is_signed))
 438     {
 439         size_t bit_width = clang_type.GetBitSize();
 440
 441         switch (bit_width)
 442         {
 443             default:
 444                 return return_valobj_sp;
 445             case 64:
 446             {
 447                 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfoByName("r1", 0);
 448                 uint64_t raw_value;
 449                 raw_value = reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
 450                 raw_value |= ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) & UINT32_MAX)) << 32;
 451                 if (is_signed)
 452                     value.GetScalar() = (int64_t)raw_value;
 453                 else
 454                     value.GetScalar() = (uint64_t)raw_value;
 455             }
 456                 break;
 457             case 32:
 458                 if (is_signed)
 459                     value.GetScalar() = (int32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
 460                 else
 461                     value.GetScalar() = (uint32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX);
 462                 break;
 463             case 16:
 464                 if (is_signed)
 465                     value.GetScalar() = (int16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
 466                 else
 467                     value.GetScalar() = (uint16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX);
 468                 break;
 469             case 8:
 470                 if (is_signed)
 471                     value.GetScalar() = (int8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
 472                 else
 473                     value.GetScalar() = (uint8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX);
 474                 break;
 475         }
 476     }
 477     else if (clang_type.IsPointerType ())
 478     {
 479         uint32_t ptr = thread.GetRegisterContext()->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX;
 480         value.GetScalar() = ptr;
 481     }
 482     else
 483     {
 484         // not handled yet
 485         return return_valobj_sp;
 486     }
 487
 488     // If we get here, we have a valid Value, so make our ValueObject out of it:
 489
 490     return_valobj_sp = ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(),
 491                                                       value,
 492                                                       ConstString(""));
 493     return return_valobj_sp;
 494 }
 495
 496 Error
 497 ABIMacOSX_arm::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp)
 498 {
 499     Error error;
 500     if (!new_value_sp)
 501     {
 502         error.SetErrorString("Empty value object for return value.");
 503         return error;
 504     }
 505
 506     ClangASTType clang_type = new_value_sp->GetClangType();
 507     if (!clang_type)
 508     {
 509         error.SetErrorString ("Null clang type for return value.");
 510         return error;
 511     }
 512
 513     Thread *thread = frame_sp->GetThread().get();
 514
 515     bool is_signed;
 516     uint32_t count;
 517     bool is_complex;
 518
 519     RegisterContext *reg_ctx = thread->GetRegisterContext().get();
 520
 521     bool set_it_simple = false;
 522     if (clang_type.IsIntegerType (is_signed) || clang_type.IsPointerType())
 523     {
 524         DataExtractor data;
 525         size_t num_bytes = new_value_sp->GetData(data);
 526         lldb::offset_t offset = 0;
 527         if (num_bytes <= 8)
 528         {
 529             const RegisterInfo *r0_info = reg_ctx->GetRegisterInfoByName("r0", 0);
 530             if (num_bytes <= 4)
 531             {
 532                 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes);
 533
 534                 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
 535                     set_it_simple = true;
 536             }
 537             else
 538             {
 539                 uint32_t raw_value = data.GetMaxU32(&offset, 4);
 540
 541                 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value))
 542                 {
 543                     const RegisterInfo *r1_info = reg_ctx->GetRegisterInfoByName("r1", 0);
 544                     uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset);
 545
 546                     if (reg_ctx->WriteRegisterFromUnsigned (r1_info, raw_value))
 547                         set_it_simple = true;
 548                 }
 549             }
 550         }
 551         else
 552         {
 553             error.SetErrorString("We don't support returning longer than 64 bit integer values at present.");
 554         }
 555     }
 556     else if (clang_type.IsFloatingPointType (count, is_complex))
 557     {
 558         if (is_complex)
 559             error.SetErrorString ("We don't support returning complex values at present");
 560         else
 561             error.SetErrorString ("We don't support returning float values at present");
 562     }
 563
 564     if (!set_it_simple)
 565         error.SetErrorString ("We only support setting simple integer return types at present.");
 566
 567     return error;
 568 }
 569
 570 bool
 571 ABIMacOSX_arm::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan)
 572 {
 573     unwind_plan.Clear();
 574     unwind_plan.SetRegisterKind (eRegisterKindDWARF);
 575
 576     uint32_t lr_reg_num = dwarf_lr;
 577     uint32_t sp_reg_num = dwarf_sp;
 578     uint32_t pc_reg_num = dwarf_pc;
 579
 580     UnwindPlan::RowSP row(new UnwindPlan::Row);
 581
 582     // Our Call Frame Address is the stack pointer value
 583     row->SetCFARegister (sp_reg_num);
 584
 585     // The previous PC is in the LR
 586     row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
 587     unwind_plan.AppendRow (row);
 588
 589     // All other registers are the same.
 590
 591     unwind_plan.SetSourceName ("arm at-func-entry default");
 592     unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
 593
 594     return true;
 595 }
 596
 597 bool
 598 ABIMacOSX_arm::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan)
 599 {
 600     unwind_plan.Clear ();
 601     unwind_plan.SetRegisterKind (eRegisterKindDWARF);
 602
 603     uint32_t fp_reg_num = dwarf_r7;   // apple uses r7 for all frames. Normal arm uses r11
 604     uint32_t pc_reg_num = dwarf_pc;
 605
 606     UnwindPlan::RowSP row(new UnwindPlan::Row);
 607     const int32_t ptr_size = 4;
 608
 609     row->SetCFARegister (fp_reg_num);
 610     row->SetCFAOffset (2 * ptr_size);
 611     row->SetOffset (0);
 612
 613     row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
 614     row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
 615
 616     unwind_plan.AppendRow (row);
 617     unwind_plan.SetSourceName ("arm-apple-ios default unwind plan");
 618     unwind_plan.SetSourcedFromCompiler (eLazyBoolNo);
 619     unwind_plan.SetUnwindPlanValidAtAllInstructions (eLazyBoolNo);
 620
 621     return true;
 622 }
 623
 624 // cf. "ARMv6 Function Calling Conventions"
 625 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv6FunctionCallingConventions.html
 626 // and "ARMv7 Function Calling Conventions"
 627 // https://developer.apple.com/library/ios/documentation/Xcode/Conceptual/iPhoneOSABIReference/Articles/ARMv7FunctionCallingConventions.html
 628
 629 // ARMv7 on iOS general purpose reg rules:
 630 //    r0-r3 not preserved  (used for argument passing)
 631 //    r4-r6 preserved
 632 //    r7    preserved (frame pointer)
 633 //    r8    preserved
 634 //    r9    not preserved (usable as volatile scratch register with iOS 3.x and later)
 635 //    r10-r11 preserved
 636 //    r12   not presrved
 637 //    r13   preserved (stack pointer)
 638 //    r14   not preserved (link register)
 639 //    r15   preserved (pc)
 640 //    cpsr  not preserved (different rules for different bits)
 641
 642 // ARMv7 on iOS floating point rules:
 643 //    d0-d7   not preserved   (aka s0-s15, q0-q3)
 644 //    d8-d15  preserved       (aka s16-s31, q4-q7)
 645 //    d16-d31 not preserved   (aka q8-q15)
 646
 647 bool
 648 ABIMacOSX_arm::RegisterIsVolatile (const RegisterInfo *reg_info)
 649 {
 650     if (reg_info)
 651     {
 652         // Volatile registers are: r0, r1, r2, r3, r9, r12, r13 (aka sp)
 653         const char *name = reg_info->name;
 654         if (name[0] == 'r')
 655         {
 656             switch (name[1])
 657             {
 658                 case '0': return name[2] == '\0'; // r0
 659                 case '1':
 660                     switch (name[2])
 661                     {
 662                     case '\0':
 663                         return true; // r1
 664                     case '2':
 665                     case '3':
 666                         return name[3] == '\0'; // r12, r13 (sp)
 667                     default:
 668                         break;
 669                     }
 670                     break;
 671
 672                 case '2': return name[2] == '\0'; // r2
 673                 case '3': return name[2] == '\0'; // r3
 674                 case '9': return name[2] == '\0'; // r9 (apple-ios only...)
 675
 676                 break;
 677             }
 678         }
 679         else if (name[0] == 'd')
 680         {
 681             switch (name[1])
 682             {
 683                 case '0':
 684                     return name[2] == '\0'; // d0 is volatile
 685
 686                 case '1':
 687                     switch (name[2])
 688                     {
 689                     case '\0':
 690                         return true; // d1 is volatile
 691                     case '6':
 692                     case '7':
 693                     case '8':
 694                     case '9':
 695                         return name[3] == '\0'; // d16 - d19 are volatile
 696                     default:
 697                         break;
 698                     }
 699                     break;
 700
 701                 case '2':
 702                     switch (name[2])
 703                     {
 704                     case '\0':
 705                         return true; // d2 is volatile
 706                     case '0':
 707                     case '1':
 708                     case '2':
 709                     case '3':
 710                     case '4':
 711                     case '5':
 712                     case '6':
 713                     case '7':
 714                     case '8':
 715                     case '9':
 716                         return name[3] == '\0'; // d20 - d29 are volatile
 717                     default:
 718                         break;
 719                     }
 720                     break;
 721
 722                 case '3':
 723                     switch (name[2])
 724                     {
 725                     case '\0':
 726                         return true; // d3 is volatile
 727                     case '0':
 728                     case '1':
 729                         return name[3] == '\0'; // d30 - d31 are volatile
 730                     default:
 731                         break;
 732                     }
 733                 case '4':
 734                 case '5':
 735                 case '6':
 736                 case '7':
 737                     return name[2] == '\0'; // d4 - d7 are volatile
 738
 739                 default:
 740                     break;
 741             }
 742         }
 743         else if (name[0] == 's')
 744         {
 745             switch (name[1])
 746             {
 747                 case '0':
 748                     return name[2] == '\0'; // s0 is volatile
 749
 750                 case '1':
 751                     switch (name[2])
 752                     {
 753                     case '\0':
 754                         return true; // s1 is volatile
 755                     case '0':
 756                     case '1':
 757                     case '2':
 758                     case '3':
 759                     case '4':
 760                     case '5':
 761                         return name[3] == '\0'; // s10 - s15 are volatile
 762                     default:
 763                         break;
 764                     }
 765                     break;
 766
 767                 case '2':
 768                     switch (name[2])
 769                     {
 770                     case '\0':
 771                         return true; // s2 is volatile
 772                     default:
 773                         break;
 774                     }
 775                     break;
 776
 777                 case '3':
 778                     switch (name[2])
 779                     {
 780                     case '\0':
 781                         return true; // s3 is volatile
 782                     default:
 783                         break;
 784                     }
 785                 case '4':
 786                 case '5':
 787                 case '6':
 788                 case '7':
 789                 case '8':
 790                 case '9':
 791                     return name[2] == '\0'; // s4 - s9 are volatile
 792
 793                 default:
 794                     break;
 795             }
 796         }
 797         else if (name[0] == 's' && name[1] == 'p' && name[2] == '\0')
 798             return true;
 799     }
 800     return false;
 801 }
 802
 803 void
 804 ABIMacOSX_arm::Initialize()
 805 {
 806     PluginManager::RegisterPlugin (GetPluginNameStatic(),
 807                                    "Mac OS X ABI for arm targets",
 808                                    CreateInstance);
 809 }
 810
 811 void
 812 ABIMacOSX_arm::Terminate()
 813 {
 814     PluginManager::UnregisterPlugin (CreateInstance);
 815 }
 816
 817 lldb_private::ConstString
 818 ABIMacOSX_arm::GetPluginNameStatic()
 819 {
 820     static ConstString g_name("macosx-arm");
 821     return g_name;
 822 }
 823
 824 //------------------------------------------------------------------
 825 // PluginInterface protocol
 826 //------------------------------------------------------------------
 827 lldb_private::ConstString
 828 ABIMacOSX_arm::GetPluginName()
 829 {
 830     return GetPluginNameStatic();
 831 }
 832
 833 uint32_t
 834 ABIMacOSX_arm::GetPluginVersion()
 835 {
 836     return 1;
 837 }
 838