lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_ppc64le.cpp

   1 //===-- RegisterContextPOSIX_ppc64le.cpp ----------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include <cerrno>
  10 #include <cstdint>
  11 #include <cstring>
  12
  13 #include "lldb/Target/Process.h"
  14 #include "lldb/Target/Target.h"
  15 #include "lldb/Target/Thread.h"
  16 #include "lldb/Utility/DataBufferHeap.h"
  17 #include "lldb/Utility/DataExtractor.h"
  18 #include "lldb/Utility/Endian.h"
  19 #include "lldb/Utility/RegisterValue.h"
  20 #include "lldb/Utility/Scalar.h"
  21 #include "llvm/Support/Compiler.h"
  22
  23 #include "RegisterContextPOSIX_ppc64le.h"
  24
  25 using namespace lldb_private;
  26 using namespace lldb;
  27
  28 static const uint32_t g_gpr_regnums[] = {
  29     gpr_r0_ppc64le,   gpr_r1_ppc64le,  gpr_r2_ppc64le,     gpr_r3_ppc64le,
  30     gpr_r4_ppc64le,   gpr_r5_ppc64le,  gpr_r6_ppc64le,     gpr_r7_ppc64le,
  31     gpr_r8_ppc64le,   gpr_r9_ppc64le,  gpr_r10_ppc64le,    gpr_r11_ppc64le,
  32     gpr_r12_ppc64le,  gpr_r13_ppc64le, gpr_r14_ppc64le,    gpr_r15_ppc64le,
  33     gpr_r16_ppc64le,  gpr_r17_ppc64le, gpr_r18_ppc64le,    gpr_r19_ppc64le,
  34     gpr_r20_ppc64le,  gpr_r21_ppc64le, gpr_r22_ppc64le,    gpr_r23_ppc64le,
  35     gpr_r24_ppc64le,  gpr_r25_ppc64le, gpr_r26_ppc64le,    gpr_r27_ppc64le,
  36     gpr_r28_ppc64le,  gpr_r29_ppc64le, gpr_r30_ppc64le,    gpr_r31_ppc64le,
  37     gpr_pc_ppc64le,   gpr_msr_ppc64le, gpr_origr3_ppc64le, gpr_ctr_ppc64le,
  38     gpr_lr_ppc64le,   gpr_xer_ppc64le, gpr_cr_ppc64le,     gpr_softe_ppc64le,
  39     gpr_trap_ppc64le,
  40 };
  41
  42 static const uint32_t g_fpr_regnums[] = {
  43     fpr_f0_ppc64le,    fpr_f1_ppc64le,  fpr_f2_ppc64le,  fpr_f3_ppc64le,
  44     fpr_f4_ppc64le,    fpr_f5_ppc64le,  fpr_f6_ppc64le,  fpr_f7_ppc64le,
  45     fpr_f8_ppc64le,    fpr_f9_ppc64le,  fpr_f10_ppc64le, fpr_f11_ppc64le,
  46     fpr_f12_ppc64le,   fpr_f13_ppc64le, fpr_f14_ppc64le, fpr_f15_ppc64le,
  47     fpr_f16_ppc64le,   fpr_f17_ppc64le, fpr_f18_ppc64le, fpr_f19_ppc64le,
  48     fpr_f20_ppc64le,   fpr_f21_ppc64le, fpr_f22_ppc64le, fpr_f23_ppc64le,
  49     fpr_f24_ppc64le,   fpr_f25_ppc64le, fpr_f26_ppc64le, fpr_f27_ppc64le,
  50     fpr_f28_ppc64le,   fpr_f29_ppc64le, fpr_f30_ppc64le, fpr_f31_ppc64le,
  51     fpr_fpscr_ppc64le,
  52 };
  53
  54 static const uint32_t g_vmx_regnums[] = {
  55     vmx_vr0_ppc64le,  vmx_vr1_ppc64le,    vmx_vr2_ppc64le,  vmx_vr3_ppc64le,
  56     vmx_vr4_ppc64le,  vmx_vr5_ppc64le,    vmx_vr6_ppc64le,  vmx_vr7_ppc64le,
  57     vmx_vr8_ppc64le,  vmx_vr9_ppc64le,    vmx_vr10_ppc64le, vmx_vr11_ppc64le,
  58     vmx_vr12_ppc64le, vmx_vr13_ppc64le,   vmx_vr14_ppc64le, vmx_vr15_ppc64le,
  59     vmx_vr16_ppc64le, vmx_vr17_ppc64le,   vmx_vr18_ppc64le, vmx_vr19_ppc64le,
  60     vmx_vr20_ppc64le, vmx_vr21_ppc64le,   vmx_vr22_ppc64le, vmx_vr23_ppc64le,
  61     vmx_vr24_ppc64le, vmx_vr25_ppc64le,   vmx_vr26_ppc64le, vmx_vr27_ppc64le,
  62     vmx_vr28_ppc64le, vmx_vr29_ppc64le,   vmx_vr30_ppc64le, vmx_vr31_ppc64le,
  63     vmx_vscr_ppc64le, vmx_vrsave_ppc64le,
  64 };
  65
  66 static const uint32_t g_vsx_regnums[] = {
  67     vsx_vs0_ppc64le,  vsx_vs1_ppc64le,  vsx_vs2_ppc64le,  vsx_vs3_ppc64le,
  68     vsx_vs4_ppc64le,  vsx_vs5_ppc64le,  vsx_vs6_ppc64le,  vsx_vs7_ppc64le,
  69     vsx_vs8_ppc64le,  vsx_vs9_ppc64le,  vsx_vs10_ppc64le, vsx_vs11_ppc64le,
  70     vsx_vs12_ppc64le, vsx_vs13_ppc64le, vsx_vs14_ppc64le, vsx_vs15_ppc64le,
  71     vsx_vs16_ppc64le, vsx_vs17_ppc64le, vsx_vs18_ppc64le, vsx_vs19_ppc64le,
  72     vsx_vs20_ppc64le, vsx_vs21_ppc64le, vsx_vs22_ppc64le, vsx_vs23_ppc64le,
  73     vsx_vs24_ppc64le, vsx_vs25_ppc64le, vsx_vs26_ppc64le, vsx_vs27_ppc64le,
  74     vsx_vs28_ppc64le, vsx_vs29_ppc64le, vsx_vs30_ppc64le, vsx_vs31_ppc64le,
  75     vsx_vs32_ppc64le, vsx_vs33_ppc64le, vsx_vs34_ppc64le, vsx_vs35_ppc64le,
  76     vsx_vs36_ppc64le, vsx_vs37_ppc64le, vsx_vs38_ppc64le, vsx_vs39_ppc64le,
  77     vsx_vs40_ppc64le, vsx_vs41_ppc64le, vsx_vs42_ppc64le, vsx_vs43_ppc64le,
  78     vsx_vs44_ppc64le, vsx_vs45_ppc64le, vsx_vs46_ppc64le, vsx_vs47_ppc64le,
  79     vsx_vs48_ppc64le, vsx_vs49_ppc64le, vsx_vs50_ppc64le, vsx_vs51_ppc64le,
  80     vsx_vs52_ppc64le, vsx_vs53_ppc64le, vsx_vs54_ppc64le, vsx_vs55_ppc64le,
  81     vsx_vs56_ppc64le, vsx_vs57_ppc64le, vsx_vs58_ppc64le, vsx_vs59_ppc64le,
  82     vsx_vs60_ppc64le, vsx_vs61_ppc64le, vsx_vs62_ppc64le, vsx_vs63_ppc64le,
  83 };
  84
  85 // Number of register sets provided by this context.
  86 enum { k_num_register_sets = 4 };
  87
  88 static const RegisterSet g_reg_sets_ppc64le[k_num_register_sets] = {
  89     {"General Purpose Registers", "gpr", k_num_gpr_registers_ppc64le,
  90      g_gpr_regnums},
  91     {"Floating Point Registers", "fpr", k_num_fpr_registers_ppc64le,
  92      g_fpr_regnums},
  93     {"Altivec/VMX Registers", "vmx", k_num_vmx_registers_ppc64le,
  94      g_vmx_regnums},
  95     {"VSX Registers", "vsx", k_num_vsx_registers_ppc64le, g_vsx_regnums},
  96 };
  97
  98 bool RegisterContextPOSIX_ppc64le::IsGPR(unsigned reg) {
  99   return (reg <= k_last_gpr_ppc64le); // GPR's come first.
 100 }
 101
 102 bool RegisterContextPOSIX_ppc64le::IsFPR(unsigned reg) {
 103   return (reg >= k_first_fpr_ppc64le) && (reg <= k_last_fpr_ppc64le);
 104 }
 105
 106 bool RegisterContextPOSIX_ppc64le::IsVMX(unsigned reg) {
 107   return (reg >= k_first_vmx_ppc64le) && (reg <= k_last_vmx_ppc64le);
 108 }
 109
 110 bool RegisterContextPOSIX_ppc64le::IsVSX(unsigned reg) {
 111   return (reg >= k_first_vsx_ppc64le) && (reg <= k_last_vsx_ppc64le);
 112 }
 113
 114 RegisterContextPOSIX_ppc64le::RegisterContextPOSIX_ppc64le(
 115     Thread &thread, uint32_t concrete_frame_idx,
 116     RegisterInfoInterface *register_info)
 117     : RegisterContext(thread, concrete_frame_idx) {
 118   m_register_info_up.reset(register_info);
 119 }
 120
 121 void RegisterContextPOSIX_ppc64le::InvalidateAllRegisters() {}
 122
 123 unsigned RegisterContextPOSIX_ppc64le::GetRegisterOffset(unsigned reg) {
 124   assert(reg < k_num_registers_ppc64le && "Invalid register number.");
 125   return GetRegisterInfo()[reg].byte_offset;
 126 }
 127
 128 unsigned RegisterContextPOSIX_ppc64le::GetRegisterSize(unsigned reg) {
 129   assert(reg < k_num_registers_ppc64le && "Invalid register number.");
 130   return GetRegisterInfo()[reg].byte_size;
 131 }
 132
 133 size_t RegisterContextPOSIX_ppc64le::GetRegisterCount() {
 134   size_t num_registers = k_num_registers_ppc64le;
 135   return num_registers;
 136 }
 137
 138 size_t RegisterContextPOSIX_ppc64le::GetGPRSize() {
 139   return m_register_info_up->GetGPRSize();
 140 }
 141
 142 const RegisterInfo *RegisterContextPOSIX_ppc64le::GetRegisterInfo() {
 143   // Commonly, this method is overridden and g_register_infos is copied and
 144   // specialized. So, use GetRegisterInfo() rather than g_register_infos in
 145   // this scope.
 146   return m_register_info_up->GetRegisterInfo();
 147 }
 148
 149 const RegisterInfo *
 150 RegisterContextPOSIX_ppc64le::GetRegisterInfoAtIndex(size_t reg) {
 151   if (reg < k_num_registers_ppc64le)
 152     return &GetRegisterInfo()[reg];
 153   else
 154     return nullptr;
 155 }
 156
 157 size_t RegisterContextPOSIX_ppc64le::GetRegisterSetCount() {
 158   size_t sets = 0;
 159   for (size_t set = 0; set < k_num_register_sets; ++set) {
 160     if (IsRegisterSetAvailable(set))
 161       ++sets;
 162   }
 163
 164   return sets;
 165 }
 166
 167 const RegisterSet *RegisterContextPOSIX_ppc64le::GetRegisterSet(size_t set) {
 168   if (IsRegisterSetAvailable(set))
 169     return &g_reg_sets_ppc64le[set];
 170   else
 171     return nullptr;
 172 }
 173
 174 const char *RegisterContextPOSIX_ppc64le::GetRegisterName(unsigned reg) {
 175   assert(reg < k_num_registers_ppc64le && "Invalid register offset.");
 176   return GetRegisterInfo()[reg].name;
 177 }
 178
 179 bool RegisterContextPOSIX_ppc64le::IsRegisterSetAvailable(size_t set_index) {
 180   size_t num_sets = k_num_register_sets;
 181
 182   return (set_index < num_sets);
 183 }