1 //===-- RegisterContextPOSIX_ppc64le.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 <cstring> 11 #include <errno.h> 12 #include <stdint.h> 13 14 #include "lldb/Target/Process.h" 15 #include "lldb/Target/Target.h" 16 #include "lldb/Target/Thread.h" 17 #include "lldb/Utility/DataBufferHeap.h" 18 #include "lldb/Utility/DataExtractor.h" 19 #include "lldb/Utility/Endian.h" 20 #include "lldb/Utility/RegisterValue.h" 21 #include "lldb/Utility/Scalar.h" 22 #include "llvm/Support/Compiler.h" 23 24 #include "RegisterContextPOSIX_ppc64le.h" 25 26 using namespace lldb_private; 27 using namespace lldb; 28 29 static const uint32_t g_gpr_regnums[] = { 30 gpr_r0_ppc64le, gpr_r1_ppc64le, gpr_r2_ppc64le, gpr_r3_ppc64le, 31 gpr_r4_ppc64le, gpr_r5_ppc64le, gpr_r6_ppc64le, gpr_r7_ppc64le, 32 gpr_r8_ppc64le, gpr_r9_ppc64le, gpr_r10_ppc64le, gpr_r11_ppc64le, 33 gpr_r12_ppc64le, gpr_r13_ppc64le, gpr_r14_ppc64le, gpr_r15_ppc64le, 34 gpr_r16_ppc64le, gpr_r17_ppc64le, gpr_r18_ppc64le, gpr_r19_ppc64le, 35 gpr_r20_ppc64le, gpr_r21_ppc64le, gpr_r22_ppc64le, gpr_r23_ppc64le, 36 gpr_r24_ppc64le, gpr_r25_ppc64le, gpr_r26_ppc64le, gpr_r27_ppc64le, 37 gpr_r28_ppc64le, gpr_r29_ppc64le, gpr_r30_ppc64le, gpr_r31_ppc64le, 38 gpr_pc_ppc64le, gpr_msr_ppc64le, gpr_origr3_ppc64le, gpr_ctr_ppc64le, 39 gpr_lr_ppc64le, gpr_xer_ppc64le, gpr_cr_ppc64le, gpr_softe_ppc64le, 40 gpr_trap_ppc64le, 41 }; 42 43 static const uint32_t g_fpr_regnums[] = { 44 fpr_f0_ppc64le, fpr_f1_ppc64le, fpr_f2_ppc64le, fpr_f3_ppc64le, 45 fpr_f4_ppc64le, fpr_f5_ppc64le, fpr_f6_ppc64le, fpr_f7_ppc64le, 46 fpr_f8_ppc64le, fpr_f9_ppc64le, fpr_f10_ppc64le, fpr_f11_ppc64le, 47 fpr_f12_ppc64le, fpr_f13_ppc64le, fpr_f14_ppc64le, fpr_f15_ppc64le, 48 fpr_f16_ppc64le, fpr_f17_ppc64le, fpr_f18_ppc64le, fpr_f19_ppc64le, 49 fpr_f20_ppc64le, fpr_f21_ppc64le, fpr_f22_ppc64le, fpr_f23_ppc64le, 50 fpr_f24_ppc64le, fpr_f25_ppc64le, fpr_f26_ppc64le, fpr_f27_ppc64le, 51 fpr_f28_ppc64le, fpr_f29_ppc64le, fpr_f30_ppc64le, fpr_f31_ppc64le, 52 fpr_fpscr_ppc64le, 53 }; 54 55 static const uint32_t g_vmx_regnums[] = { 56 vmx_vr0_ppc64le, vmx_vr1_ppc64le, vmx_vr2_ppc64le, vmx_vr3_ppc64le, 57 vmx_vr4_ppc64le, vmx_vr5_ppc64le, vmx_vr6_ppc64le, vmx_vr7_ppc64le, 58 vmx_vr8_ppc64le, vmx_vr9_ppc64le, vmx_vr10_ppc64le, vmx_vr11_ppc64le, 59 vmx_vr12_ppc64le, vmx_vr13_ppc64le, vmx_vr14_ppc64le, vmx_vr15_ppc64le, 60 vmx_vr16_ppc64le, vmx_vr17_ppc64le, vmx_vr18_ppc64le, vmx_vr19_ppc64le, 61 vmx_vr20_ppc64le, vmx_vr21_ppc64le, vmx_vr22_ppc64le, vmx_vr23_ppc64le, 62 vmx_vr24_ppc64le, vmx_vr25_ppc64le, vmx_vr26_ppc64le, vmx_vr27_ppc64le, 63 vmx_vr28_ppc64le, vmx_vr29_ppc64le, vmx_vr30_ppc64le, vmx_vr31_ppc64le, 64 vmx_vscr_ppc64le, vmx_vrsave_ppc64le, 65 }; 66 67 static const uint32_t g_vsx_regnums[] = { 68 vsx_vs0_ppc64le, vsx_vs1_ppc64le, vsx_vs2_ppc64le, vsx_vs3_ppc64le, 69 vsx_vs4_ppc64le, vsx_vs5_ppc64le, vsx_vs6_ppc64le, vsx_vs7_ppc64le, 70 vsx_vs8_ppc64le, vsx_vs9_ppc64le, vsx_vs10_ppc64le, vsx_vs11_ppc64le, 71 vsx_vs12_ppc64le, vsx_vs13_ppc64le, vsx_vs14_ppc64le, vsx_vs15_ppc64le, 72 vsx_vs16_ppc64le, vsx_vs17_ppc64le, vsx_vs18_ppc64le, vsx_vs19_ppc64le, 73 vsx_vs20_ppc64le, vsx_vs21_ppc64le, vsx_vs22_ppc64le, vsx_vs23_ppc64le, 74 vsx_vs24_ppc64le, vsx_vs25_ppc64le, vsx_vs26_ppc64le, vsx_vs27_ppc64le, 75 vsx_vs28_ppc64le, vsx_vs29_ppc64le, vsx_vs30_ppc64le, vsx_vs31_ppc64le, 76 vsx_vs32_ppc64le, vsx_vs33_ppc64le, vsx_vs34_ppc64le, vsx_vs35_ppc64le, 77 vsx_vs36_ppc64le, vsx_vs37_ppc64le, vsx_vs38_ppc64le, vsx_vs39_ppc64le, 78 vsx_vs40_ppc64le, vsx_vs41_ppc64le, vsx_vs42_ppc64le, vsx_vs43_ppc64le, 79 vsx_vs44_ppc64le, vsx_vs45_ppc64le, vsx_vs46_ppc64le, vsx_vs47_ppc64le, 80 vsx_vs48_ppc64le, vsx_vs49_ppc64le, vsx_vs50_ppc64le, vsx_vs51_ppc64le, 81 vsx_vs52_ppc64le, vsx_vs53_ppc64le, vsx_vs54_ppc64le, vsx_vs55_ppc64le, 82 vsx_vs56_ppc64le, vsx_vs57_ppc64le, vsx_vs58_ppc64le, vsx_vs59_ppc64le, 83 vsx_vs60_ppc64le, vsx_vs61_ppc64le, vsx_vs62_ppc64le, vsx_vs63_ppc64le, 84 }; 85 86 // Number of register sets provided by this context. 87 enum { k_num_register_sets = 4 }; 88 89 static const RegisterSet g_reg_sets_ppc64le[k_num_register_sets] = { 90 {"General Purpose Registers", "gpr", k_num_gpr_registers_ppc64le, 91 g_gpr_regnums}, 92 {"Floating Point Registers", "fpr", k_num_fpr_registers_ppc64le, 93 g_fpr_regnums}, 94 {"Altivec/VMX Registers", "vmx", k_num_vmx_registers_ppc64le, 95 g_vmx_regnums}, 96 {"VSX Registers", "vsx", k_num_vsx_registers_ppc64le, g_vsx_regnums}, 97 }; 98 99 bool RegisterContextPOSIX_ppc64le::IsGPR(unsigned reg) { 100 return (reg <= k_last_gpr_ppc64le); // GPR's come first. 101 } 102 103 bool RegisterContextPOSIX_ppc64le::IsFPR(unsigned reg) { 104 return (reg >= k_first_fpr_ppc64le) && (reg <= k_last_fpr_ppc64le); 105 } 106 107 bool RegisterContextPOSIX_ppc64le::IsVMX(unsigned reg) { 108 return (reg >= k_first_vmx_ppc64le) && (reg <= k_last_vmx_ppc64le); 109 } 110 111 bool RegisterContextPOSIX_ppc64le::IsVSX(unsigned reg) { 112 return (reg >= k_first_vsx_ppc64le) && (reg <= k_last_vsx_ppc64le); 113 } 114 115 RegisterContextPOSIX_ppc64le::RegisterContextPOSIX_ppc64le( 116 Thread &thread, uint32_t concrete_frame_idx, 117 RegisterInfoInterface *register_info) 118 : RegisterContext(thread, concrete_frame_idx) { 119 m_register_info_ap.reset(register_info); 120 } 121 122 void RegisterContextPOSIX_ppc64le::InvalidateAllRegisters() {} 123 124 unsigned RegisterContextPOSIX_ppc64le::GetRegisterOffset(unsigned reg) { 125 assert(reg < k_num_registers_ppc64le && "Invalid register number."); 126 return GetRegisterInfo()[reg].byte_offset; 127 } 128 129 unsigned RegisterContextPOSIX_ppc64le::GetRegisterSize(unsigned reg) { 130 assert(reg < k_num_registers_ppc64le && "Invalid register number."); 131 return GetRegisterInfo()[reg].byte_size; 132 } 133 134 size_t RegisterContextPOSIX_ppc64le::GetRegisterCount() { 135 size_t num_registers = k_num_registers_ppc64le; 136 return num_registers; 137 } 138 139 size_t RegisterContextPOSIX_ppc64le::GetGPRSize() { 140 return m_register_info_ap->GetGPRSize(); 141 } 142 143 const RegisterInfo *RegisterContextPOSIX_ppc64le::GetRegisterInfo() { 144 // Commonly, this method is overridden and g_register_infos is copied and 145 // specialized. So, use GetRegisterInfo() rather than g_register_infos in 146 // this scope. 147 return m_register_info_ap->GetRegisterInfo(); 148 } 149 150 const RegisterInfo * 151 RegisterContextPOSIX_ppc64le::GetRegisterInfoAtIndex(size_t reg) { 152 if (reg < k_num_registers_ppc64le) 153 return &GetRegisterInfo()[reg]; 154 else 155 return NULL; 156 } 157 158 size_t RegisterContextPOSIX_ppc64le::GetRegisterSetCount() { 159 size_t sets = 0; 160 for (size_t set = 0; set < k_num_register_sets; ++set) { 161 if (IsRegisterSetAvailable(set)) 162 ++sets; 163 } 164 165 return sets; 166 } 167 168 const RegisterSet *RegisterContextPOSIX_ppc64le::GetRegisterSet(size_t set) { 169 if (IsRegisterSetAvailable(set)) 170 return &g_reg_sets_ppc64le[set]; 171 else 172 return NULL; 173 } 174 175 const char *RegisterContextPOSIX_ppc64le::GetRegisterName(unsigned reg) { 176 assert(reg < k_num_registers_ppc64le && "Invalid register offset."); 177 return GetRegisterInfo()[reg].name; 178 } 179 180 lldb::ByteOrder RegisterContextPOSIX_ppc64le::GetByteOrder() { 181 // Get the target process whose privileged thread was used for the register 182 // read. 183 lldb::ByteOrder byte_order = eByteOrderInvalid; 184 Process *process = CalculateProcess().get(); 185 186 if (process) 187 byte_order = process->GetByteOrder(); 188 return byte_order; 189 } 190 191 bool RegisterContextPOSIX_ppc64le::IsRegisterSetAvailable(size_t set_index) { 192 size_t num_sets = k_num_register_sets; 193 194 return (set_index < num_sets); 195 } 196 197 // Used when parsing DWARF and EH frame information and any other object file 198 // sections that contain register numbers in them. 199 uint32_t RegisterContextPOSIX_ppc64le::ConvertRegisterKindToRegisterNumber( 200 lldb::RegisterKind kind, uint32_t num) { 201 const uint32_t num_regs = GetRegisterCount(); 202 203 assert(kind < kNumRegisterKinds); 204 for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) { 205 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg_idx); 206 207 if (reg_info->kinds[kind] == num) 208 return reg_idx; 209 } 210 211 return LLDB_INVALID_REGNUM; 212 } 213