ABIMacOSX_arm.cpp revision 263367
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 35using namespace lldb; 36using namespace lldb_private; 37 38static 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}; 147static const uint32_t k_num_register_infos = sizeof(g_register_infos)/sizeof(RegisterInfo); 148static bool g_register_info_names_constified = false; 149 150const lldb_private::RegisterInfo * 151ABIMacOSX_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 172size_t 173ABIMacOSX_arm::GetRedZoneSize () const 174{ 175 return 0; 176} 177 178//------------------------------------------------------------------ 179// Static Functions 180//------------------------------------------------------------------ 181ABISP 182ABIMacOSX_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 196bool 197ABIMacOSX_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 300bool 301ABIMacOSX_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 410ValueObjectSP 411ABIMacOSX_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 496Error 497ABIMacOSX_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 570bool 571ABIMacOSX_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 597bool 598ABIMacOSX_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 647bool 648ABIMacOSX_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 803void 804ABIMacOSX_arm::Initialize() 805{ 806 PluginManager::RegisterPlugin (GetPluginNameStatic(), 807 "Mac OS X ABI for arm targets", 808 CreateInstance); 809} 810 811void 812ABIMacOSX_arm::Terminate() 813{ 814 PluginManager::UnregisterPlugin (CreateInstance); 815} 816 817lldb_private::ConstString 818ABIMacOSX_arm::GetPluginNameStatic() 819{ 820 static ConstString g_name("macosx-arm"); 821 return g_name; 822} 823 824//------------------------------------------------------------------ 825// PluginInterface protocol 826//------------------------------------------------------------------ 827lldb_private::ConstString 828ABIMacOSX_arm::GetPluginName() 829{ 830 return GetPluginNameStatic(); 831} 832 833uint32_t 834ABIMacOSX_arm::GetPluginVersion() 835{ 836 return 1; 837} 838 839