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 addr_t *arg1_ptr, 202 addr_t *arg2_ptr, 203 addr_t *arg3_ptr, 204 addr_t *arg4_ptr, 205 addr_t *arg5_ptr, 206 addr_t *arg6_ptr) const 207 { 208 RegisterContext *reg_ctx = thread.GetRegisterContext().get(); 209 if (!reg_ctx) 210 return false; 211 212 const uint32_t pc_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC); 213 const uint32_t sp_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP); 214 const uint32_t ra_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA); 215 216 RegisterValue reg_value; 217 218 if (arg1_ptr) 219 { 220 reg_value.SetUInt32(*arg1_ptr); 221 if (!reg_ctx->WriteRegister (reg_ctx->GetRegisterInfoByName("r0"), reg_value)) 222 return false; 223 224 if (arg2_ptr) 225 { 226 reg_value.SetUInt32(*arg2_ptr); 227 if (!reg_ctx->WriteRegister (reg_ctx->GetRegisterInfoByName("r1"), reg_value)) 228 return false; 229 230 if (arg3_ptr) 231 { 232 reg_value.SetUInt32(*arg3_ptr); 233 if (!reg_ctx->WriteRegister (reg_ctx->GetRegisterInfoByName("r2"), reg_value)) 234 return false; 235 if (arg4_ptr) 236 { 237 reg_value.SetUInt32(*arg4_ptr); 238 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoByName("r3"); 239 if (!reg_ctx->WriteRegister (reg_info, reg_value)) 240 return false; 241 if (arg5_ptr) 242 { 243 // Keep the stack 8 byte aligned, not that we need to 244 sp -= 8; 245 sp &= ~(8ull-1ull); 246 reg_value.SetUInt32(*arg5_ptr); 247 if (reg_ctx->WriteRegisterValueToMemory (reg_info, sp, reg_info->byte_size, reg_value).Fail()) 248 return false; 249 if (arg6_ptr) 250 { 251 reg_value.SetUInt32(*arg6_ptr); 252 if (reg_ctx->WriteRegisterValueToMemory (reg_info, sp + 4, reg_info->byte_size, reg_value).Fail()) 253 return false; 254 } 255 } 256 } 257 } 258 } 259 } 260 261 262 TargetSP target_sp (thread.CalculateTarget()); 263 Address so_addr; 264 265 // Figure out if our return address is ARM or Thumb by using the 266 // Address::GetCallableLoadAddress(Target*) which will figure out the ARM 267 // thumb-ness and set the correct address bits for us. 268 so_addr.SetLoadAddress (return_addr, target_sp.get()); 269 return_addr = so_addr.GetCallableLoadAddress (target_sp.get()); 270 271 // Set "lr" to the return address 272 if (!reg_ctx->WriteRegisterFromUnsigned (ra_reg_num, return_addr)) 273 return false; 274 275 // Set "sp" to the requested value 276 if (!reg_ctx->WriteRegisterFromUnsigned (sp_reg_num, sp)) 277 return false; 278 279 // If bit zero or 1 is set, this must be a thumb function, no need to figure 280 // this out from the symbols. 281 so_addr.SetLoadAddress (function_addr, target_sp.get()); 282 function_addr = so_addr.GetCallableLoadAddress (target_sp.get()); 283 284 const RegisterInfo *cpsr_reg_info = reg_ctx->GetRegisterInfoByName("cpsr"); 285 const uint32_t curr_cpsr = reg_ctx->ReadRegisterAsUnsigned(cpsr_reg_info, 0); 286 287 // Make a new CPSR and mask out any Thumb IT (if/then) bits 288 uint32_t new_cpsr = curr_cpsr & ~MASK_CPSR_IT_MASK; 289 // If bit zero or 1 is set, this must be thumb... 290 if (function_addr & 1ull) 291 new_cpsr |= MASK_CPSR_T; // Set T bit in CPSR 292 else 293 new_cpsr &= ~MASK_CPSR_T; // Clear T bit in CPSR 294 295 if (new_cpsr != curr_cpsr) 296 { 297 if (!reg_ctx->WriteRegisterFromUnsigned (cpsr_reg_info, new_cpsr)) 298 return false; 299 } 300 301 function_addr &= ~1ull; // clear bit zero since the CPSR will take care of the mode for us 302 303 // Set "pc" to the address requested 304 if (!reg_ctx->WriteRegisterFromUnsigned (pc_reg_num, function_addr)) 305 return false; 306 307 return true; 308 } 309 310 bool 311 ABIMacOSX_arm::GetArgumentValues (Thread &thread, 312 ValueList &values) const 313 { 314 uint32_t num_values = values.GetSize(); 315 316 317 ExecutionContext exe_ctx (thread.shared_from_this()); 318 // For now, assume that the types in the AST values come from the Target's 319 // scratch AST. 320 321 // Extract the register context so we can read arguments from registers 322 323 RegisterContext *reg_ctx = thread.GetRegisterContext().get(); 324 325 if (!reg_ctx) 326 return false; 327 328 addr_t sp = 0; 329 330 for (uint32_t value_idx = 0; value_idx < num_values; ++value_idx) 331 { 332 // We currently only support extracting values with Clang QualTypes. 333 // Do we care about others? 334 Value *value = values.GetValueAtIndex(value_idx); 335 336 if (!value) 337 return false; 338 339 ClangASTType clang_type = value->GetClangType(); 340 if (clang_type) 341 { 342 bool is_signed = false; 343 size_t bit_width = 0; 344 if (clang_type.IsIntegerType (is_signed)) 345 { 346 bit_width = clang_type.GetBitSize(); 347 } 348 else if (clang_type.IsPointerOrReferenceType ()) 349 { 350 bit_width = clang_type.GetBitSize(); 351 } 352 else 353 { 354 // We only handle integer, pointer and reference types currently... 355 return false; 356 } 357 358 if (bit_width <= (exe_ctx.GetProcessRef().GetAddressByteSize() * 8)) 359 { 360 if (value_idx < 4) 361 { 362 // Arguments 1-4 are in r0-r3... 363 const RegisterInfo *arg_reg_info = NULL; 364 // Search by generic ID first, then fall back to by name 365 uint32_t arg_reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_ARG1 + value_idx); 366 if (arg_reg_num != LLDB_INVALID_REGNUM) 367 { 368 arg_reg_info = reg_ctx->GetRegisterInfoAtIndex(arg_reg_num); 369 } 370 else 371 { 372 switch (value_idx) 373 { 374 case 0: arg_reg_info = reg_ctx->GetRegisterInfoByName("r0"); break; 375 case 1: arg_reg_info = reg_ctx->GetRegisterInfoByName("r1"); break; 376 case 2: arg_reg_info = reg_ctx->GetRegisterInfoByName("r2"); break; 377 case 3: arg_reg_info = reg_ctx->GetRegisterInfoByName("r3"); break; 378 } 379 } 380 381 if (arg_reg_info) 382 { 383 RegisterValue reg_value; 384 385 if (reg_ctx->ReadRegister(arg_reg_info, reg_value)) 386 { 387 if (is_signed) 388 reg_value.SignExtend(bit_width); 389 if (!reg_value.GetScalarValue(value->GetScalar())) 390 return false; 391 continue; 392 } 393 } 394 return false; 395 } 396 else 397 { 398 if (sp == 0) 399 { 400 // Read the stack pointer if it already hasn't been read 401 sp = reg_ctx->GetSP(0); 402 if (sp == 0) 403 return false; 404 } 405 406 // Arguments 5 on up are on the stack 407 const uint32_t arg_byte_size = (bit_width + (8-1)) / 8; 408 Error error; 409 if (!exe_ctx.GetProcessRef().ReadScalarIntegerFromMemory(sp, arg_byte_size, is_signed, value->GetScalar(), error)) 410 return false; 411 412 sp += arg_byte_size; 413 } 414 } 415 } 416 } 417 return true; 418 } 419 420 ValueObjectSP 421 ABIMacOSX_arm::GetReturnValueObjectImpl (Thread &thread, 422 lldb_private::ClangASTType &clang_type) const 423 { 424 Value value; 425 ValueObjectSP return_valobj_sp; 426 427 if (!clang_type) 428 return return_valobj_sp; 429 430 clang::ASTContext *ast_context = clang_type.GetASTContext(); 431 if (!ast_context) 432 return return_valobj_sp; 433 434 //value.SetContext (Value::eContextTypeClangType, clang_type.GetOpaqueQualType()); 435 value.SetClangType (clang_type); 436 437 RegisterContext *reg_ctx = thread.GetRegisterContext().get(); 438 if (!reg_ctx) 439 return return_valobj_sp; 440 441 bool is_signed; 442 443 // Get the pointer to the first stack argument so we have a place to start 444 // when reading data 445 446 const RegisterInfo *r0_reg_info = reg_ctx->GetRegisterInfoByName("r0", 0); 447 if (clang_type.IsIntegerType (is_signed)) 448 { 449 size_t bit_width = clang_type.GetBitSize(); 450 451 switch (bit_width) 452 { 453 default: 454 return return_valobj_sp; 455 case 64: 456 { 457 const RegisterInfo *r1_reg_info = reg_ctx->GetRegisterInfoByName("r1", 0); 458 uint64_t raw_value; 459 raw_value = reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX; 460 raw_value |= ((uint64_t)(reg_ctx->ReadRegisterAsUnsigned(r1_reg_info, 0) & UINT32_MAX)) << 32; 461 if (is_signed) 462 value.GetScalar() = (int64_t)raw_value; 463 else 464 value.GetScalar() = (uint64_t)raw_value; 465 } 466 break; 467 case 32: 468 if (is_signed) 469 value.GetScalar() = (int32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX); 470 else 471 value.GetScalar() = (uint32_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX); 472 break; 473 case 16: 474 if (is_signed) 475 value.GetScalar() = (int16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX); 476 else 477 value.GetScalar() = (uint16_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT16_MAX); 478 break; 479 case 8: 480 if (is_signed) 481 value.GetScalar() = (int8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX); 482 else 483 value.GetScalar() = (uint8_t)(reg_ctx->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT8_MAX); 484 break; 485 } 486 } 487 else if (clang_type.IsPointerType ()) 488 { 489 uint32_t ptr = thread.GetRegisterContext()->ReadRegisterAsUnsigned(r0_reg_info, 0) & UINT32_MAX; 490 value.GetScalar() = ptr; 491 } 492 else 493 { 494 // not handled yet 495 return return_valobj_sp; 496 } 497 498 // If we get here, we have a valid Value, so make our ValueObject out of it: 499 500 return_valobj_sp = ValueObjectConstResult::Create(thread.GetStackFrameAtIndex(0).get(), 501 value, 502 ConstString("")); 503 return return_valobj_sp; 504 } 505 506 Error 507 ABIMacOSX_arm::SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value_sp) 508 { 509 Error error; 510 if (!new_value_sp) 511 { 512 error.SetErrorString("Empty value object for return value."); 513 return error; 514 } 515 516 ClangASTType clang_type = new_value_sp->GetClangType(); 517 if (!clang_type) 518 { 519 error.SetErrorString ("Null clang type for return value."); 520 return error; 521 } 522 523 Thread *thread = frame_sp->GetThread().get(); 524 525 bool is_signed; 526 uint32_t count; 527 bool is_complex; 528 529 RegisterContext *reg_ctx = thread->GetRegisterContext().get(); 530 531 bool set_it_simple = false; 532 if (clang_type.IsIntegerType (is_signed) || clang_type.IsPointerType()) 533 { 534 DataExtractor data; 535 size_t num_bytes = new_value_sp->GetData(data); 536 lldb::offset_t offset = 0; 537 if (num_bytes <= 8) 538 { 539 const RegisterInfo *r0_info = reg_ctx->GetRegisterInfoByName("r0", 0); 540 if (num_bytes <= 4) 541 { 542 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes); 543 544 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value)) 545 set_it_simple = true; 546 } 547 else 548 { 549 uint32_t raw_value = data.GetMaxU32(&offset, 4); 550 551 if (reg_ctx->WriteRegisterFromUnsigned (r0_info, raw_value)) 552 { 553 const RegisterInfo *r1_info = reg_ctx->GetRegisterInfoByName("r1", 0); 554 uint32_t raw_value = data.GetMaxU32(&offset, num_bytes - offset); 555 556 if (reg_ctx->WriteRegisterFromUnsigned (r1_info, raw_value)) 557 set_it_simple = true; 558 } 559 } 560 } 561 else 562 { 563 error.SetErrorString("We don't support returning longer than 64 bit integer values at present."); 564 } 565 } 566 else if (clang_type.IsFloatingPointType (count, is_complex)) 567 { 568 if (is_complex) 569 error.SetErrorString ("We don't support returning complex values at present"); 570 else 571 error.SetErrorString ("We don't support returning float values at present"); 572 } 573 574 if (!set_it_simple) 575 error.SetErrorString ("We only support setting simple integer return types at present."); 576 577 return error; 578 } 579 580 bool 581 ABIMacOSX_arm::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan) 582 { 583 uint32_t reg_kind = unwind_plan.GetRegisterKind(); 584 uint32_t lr_reg_num = LLDB_INVALID_REGNUM; 585 uint32_t sp_reg_num = LLDB_INVALID_REGNUM; 586 uint32_t pc_reg_num = LLDB_INVALID_REGNUM; 587 588 switch (reg_kind) 589 { 590 case eRegisterKindDWARF: 591 case eRegisterKindGCC: 592 lr_reg_num = dwarf_lr; 593 sp_reg_num = dwarf_sp; 594 pc_reg_num = dwarf_pc; 595 break; 596 597 case eRegisterKindGeneric: 598 lr_reg_num = LLDB_REGNUM_GENERIC_RA; 599 sp_reg_num = LLDB_REGNUM_GENERIC_SP; 600 pc_reg_num = LLDB_REGNUM_GENERIC_PC; 601 break; 602 } 603 604 if (lr_reg_num == LLDB_INVALID_REGNUM || 605 sp_reg_num == LLDB_INVALID_REGNUM || 606 pc_reg_num == LLDB_INVALID_REGNUM) 607 return false; 608 609 UnwindPlan::RowSP row(new UnwindPlan::Row); 610 611 // Our Call Frame Address is the stack pointer value 612 row->SetCFARegister (sp_reg_num); 613 614 // The previous PC is in the LR 615 row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true); 616 unwind_plan.AppendRow (row); 617 618 // All other registers are the same. 619 620 unwind_plan.SetSourceName ("arm at-func-entry default"); 621 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo); 622 623 return true; 624 } 625 626 bool 627 ABIMacOSX_arm::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan) 628 { 629 uint32_t fp_reg_num = dwarf_r7; // apple uses r7 for all frames. Normal arm uses r11; 630 uint32_t pc_reg_num = dwarf_pc; 631 632 UnwindPlan::RowSP row(new UnwindPlan::Row); 633 const int32_t ptr_size = 4; 634 635 unwind_plan.Clear (); 636 unwind_plan.SetRegisterKind (eRegisterKindDWARF); 637 row->SetCFARegister (fp_reg_num); 638 row->SetCFAOffset (2 * ptr_size); 639 row->SetOffset (0); 640 641 row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true); 642 row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true); 643 644 unwind_plan.AppendRow (row); 645 unwind_plan.SetSourceName ("arm-apple-ios default unwind plan"); 646 unwind_plan.SetSourcedFromCompiler (eLazyBoolNo); 647 unwind_plan.SetUnwindPlanValidAtAllInstructions (eLazyBoolNo); 648 649 return true; 650 } 651 652 // ARMv7 on iOS general purpose reg rules: 653 // r0-r3 not preserved (used for argument passing) 654 // r4-r6 preserved 655 // r7 preserved (frame pointer) 656 // r8 preserved 657 // r9 not preserved (usable as volatile scratch register with iOS 3.x and later) 658 // r10-r11 preserved 659 // r12 not presrved 660 // r13 preserved (stack pointer) 661 // r14 not preserved (link register) 662 // r15 preserved (pc) 663 // cpsr not preserved (different rules for different bits) 664 665 // ARMv7 on iOS floating point rules: 666 // d0-d7 not preserved (aka s0-s15, q0-q3) 667 // d8-d15 preserved (aka s16-s31, q4-q7) 668 // d16-d31 not preserved (aka q8-q15) 669 670 bool 671 ABIMacOSX_arm::RegisterIsVolatile (const RegisterInfo *reg_info) 672 { 673 if (reg_info) 674 { 675 // Volatile registers include: r0, r1, r2, r3, r9, r12, r13 676 const char *name = reg_info->name; 677 if (name[0] == 'r') 678 { 679 switch (name[1]) 680 { 681 case '0': return name[2] == '\0'; // r0 682 case '1': 683 switch (name[2]) 684 { 685 case '\0': 686 return true; // r1 687 case '2': 688 case '3': 689 return name[2] == '\0'; // r12 - r13 690 default: 691 break; 692 } 693 break; 694 695 case '2': return name[2] == '\0'; // r2 696 case '3': return name[2] == '\0'; // r3 697 case '9': return name[2] == '\0'; // r9 (apple-ios only...) 698 699 break; 700 } 701 } 702 else if (name[0] == 'd') 703 { 704 switch (name[1]) 705 { 706 case '0': 707 return name[2] == '\0'; // d0 is volatile 708 709 case '1': 710 switch (name[2]) 711 { 712 case '\0': 713 return true; // d1 is volatile 714 case '6': 715 case '7': 716 case '8': 717 case '9': 718 return name[3] == '\0'; // d16 - d19 are volatile 719 default: 720 break; 721 } 722 break; 723 724 case '2': 725 switch (name[2]) 726 { 727 case '\0': 728 return true; // d2 is volatile 729 case '0': 730 case '1': 731 case '2': 732 case '3': 733 case '4': 734 case '5': 735 case '6': 736 case '7': 737 case '8': 738 case '9': 739 return name[3] == '\0'; // d20 - d29 are volatile 740 default: 741 break; 742 } 743 break; 744 745 case '3': 746 switch (name[2]) 747 { 748 case '\0': 749 return true; // d3 is volatile 750 case '0': 751 case '1': 752 return name[3] == '\0'; // d30 - d31 are volatile 753 default: 754 break; 755 } 756 case '4': 757 case '5': 758 case '6': 759 case '7': 760 return name[2] == '\0'; // d4 - d7 are volatile 761 762 default: 763 break; 764 } 765 } 766 else if (name[0] == 's') 767 { 768 switch (name[1]) 769 { 770 case '0': 771 return name[2] == '\0'; // s0 is volatile 772 773 case '1': 774 switch (name[2]) 775 { 776 case '\0': 777 return true; // s1 is volatile 778 case '0': 779 case '1': 780 case '2': 781 case '3': 782 case '4': 783 case '5': 784 return name[3] == '\0'; // s10 - s15 are volatile 785 default: 786 break; 787 } 788 break; 789 790 case '2': 791 switch (name[2]) 792 { 793 case '\0': 794 return true; // s2 is volatile 795 default: 796 break; 797 } 798 break; 799 800 case '3': 801 switch (name[2]) 802 { 803 case '\0': 804 return true; // s3 is volatile 805 default: 806 break; 807 } 808 case '4': 809 case '5': 810 case '6': 811 case '7': 812 case '8': 813 case '9': 814 return name[2] == '\0'; // s4 - s9 are volatile 815 816 default: 817 break; 818 } 819 } 820 else if (name[0] == 's' && name[1] == 'p' && name[2] == '\0') 821 return true; 822 } 823 return false; 824 } 825 826 void 827 ABIMacOSX_arm::Initialize() 828 { 829 PluginManager::RegisterPlugin (GetPluginNameStatic(), 830 "Mac OS X ABI for arm targets", 831 CreateInstance); 832 } 833 834 void 835 ABIMacOSX_arm::Terminate() 836 { 837 PluginManager::UnregisterPlugin (CreateInstance); 838 } 839 840 lldb_private::ConstString 841 ABIMacOSX_arm::GetPluginNameStatic() 842 { 843 static ConstString g_name("macosx-arm"); 844 return g_name; 845 } 846 847 //------------------------------------------------------------------ 848 // PluginInterface protocol 849 //------------------------------------------------------------------ 850 lldb_private::ConstString 851 ABIMacOSX_arm::GetPluginName() 852 { 853 return GetPluginNameStatic(); 854 } 855 856 uint32_t 857 ABIMacOSX_arm::GetPluginVersion() 858 { 859 return 1; 860 } 861 862
