1 //===-- RegisterContextPOSIX_x86.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/Core/DataBufferHeap.h" 15 #include "lldb/Core/DataExtractor.h" 16 #include "lldb/Core/RegisterValue.h" 17 #include "lldb/Core/Scalar.h" 18 #include "lldb/Host/Endian.h" 19 #include "lldb/Target/Target.h" 20 #include "lldb/Target/Thread.h" 21 #include "llvm/Support/Compiler.h" 22 23 #include "Plugins/Process/elf-core/ProcessElfCore.h" 24 #include "RegisterContextPOSIX_x86.h" 25 #include "RegisterContext_x86.h" 26 27 using namespace lldb_private; 28 using namespace lldb; 29 30 const uint32_t g_gpr_regnums_i386[] = { 31 lldb_eax_i386, lldb_ebx_i386, lldb_ecx_i386, lldb_edx_i386, 32 lldb_edi_i386, lldb_esi_i386, lldb_ebp_i386, lldb_esp_i386, 33 lldb_eip_i386, lldb_eflags_i386, lldb_cs_i386, lldb_fs_i386, 34 lldb_gs_i386, lldb_ss_i386, lldb_ds_i386, lldb_es_i386, 35 lldb_ax_i386, lldb_bx_i386, lldb_cx_i386, lldb_dx_i386, 36 lldb_di_i386, lldb_si_i386, lldb_bp_i386, lldb_sp_i386, 37 lldb_ah_i386, lldb_bh_i386, lldb_ch_i386, lldb_dh_i386, 38 lldb_al_i386, lldb_bl_i386, lldb_cl_i386, lldb_dl_i386, 39 LLDB_INVALID_REGNUM, // Register sets must be terminated with 40 // LLDB_INVALID_REGNUM. 41 }; 42 static_assert((sizeof(g_gpr_regnums_i386) / sizeof(g_gpr_regnums_i386[0])) - 43 1 == 44 k_num_gpr_registers_i386, 45 "g_gpr_regnums_i386 has wrong number of register infos"); 46 47 const uint32_t g_lldb_regnums_i386[] = { 48 lldb_fctrl_i386, lldb_fstat_i386, lldb_ftag_i386, lldb_fop_i386, 49 lldb_fiseg_i386, lldb_fioff_i386, lldb_foseg_i386, lldb_fooff_i386, 50 lldb_mxcsr_i386, lldb_mxcsrmask_i386, lldb_st0_i386, lldb_st1_i386, 51 lldb_st2_i386, lldb_st3_i386, lldb_st4_i386, lldb_st5_i386, 52 lldb_st6_i386, lldb_st7_i386, lldb_mm0_i386, lldb_mm1_i386, 53 lldb_mm2_i386, lldb_mm3_i386, lldb_mm4_i386, lldb_mm5_i386, 54 lldb_mm6_i386, lldb_mm7_i386, lldb_xmm0_i386, lldb_xmm1_i386, 55 lldb_xmm2_i386, lldb_xmm3_i386, lldb_xmm4_i386, lldb_xmm5_i386, 56 lldb_xmm6_i386, lldb_xmm7_i386, 57 LLDB_INVALID_REGNUM // Register sets must be terminated with 58 // LLDB_INVALID_REGNUM. 59 }; 60 static_assert((sizeof(g_lldb_regnums_i386) / sizeof(g_lldb_regnums_i386[0])) - 61 1 == 62 k_num_fpr_registers_i386, 63 "g_lldb_regnums_i386 has wrong number of register infos"); 64 65 const uint32_t g_avx_regnums_i386[] = { 66 lldb_ymm0_i386, lldb_ymm1_i386, lldb_ymm2_i386, lldb_ymm3_i386, 67 lldb_ymm4_i386, lldb_ymm5_i386, lldb_ymm6_i386, lldb_ymm7_i386, 68 LLDB_INVALID_REGNUM // Register sets must be terminated with 69 // LLDB_INVALID_REGNUM. 70 }; 71 static_assert((sizeof(g_avx_regnums_i386) / sizeof(g_avx_regnums_i386[0])) - 72 1 == 73 k_num_avx_registers_i386, 74 " g_avx_regnums_i386 has wrong number of register infos"); 75 76 static const uint32_t g_gpr_regnums_x86_64[] = { 77 lldb_rax_x86_64, lldb_rbx_x86_64, lldb_rcx_x86_64, lldb_rdx_x86_64, 78 lldb_rdi_x86_64, lldb_rsi_x86_64, lldb_rbp_x86_64, lldb_rsp_x86_64, 79 lldb_r8_x86_64, lldb_r9_x86_64, lldb_r10_x86_64, lldb_r11_x86_64, 80 lldb_r12_x86_64, lldb_r13_x86_64, lldb_r14_x86_64, lldb_r15_x86_64, 81 lldb_rip_x86_64, lldb_rflags_x86_64, lldb_cs_x86_64, lldb_fs_x86_64, 82 lldb_gs_x86_64, lldb_ss_x86_64, lldb_ds_x86_64, lldb_es_x86_64, 83 lldb_eax_x86_64, lldb_ebx_x86_64, lldb_ecx_x86_64, lldb_edx_x86_64, 84 lldb_edi_x86_64, lldb_esi_x86_64, lldb_ebp_x86_64, lldb_esp_x86_64, 85 lldb_r8d_x86_64, // Low 32 bits or r8 86 lldb_r9d_x86_64, // Low 32 bits or r9 87 lldb_r10d_x86_64, // Low 32 bits or r10 88 lldb_r11d_x86_64, // Low 32 bits or r11 89 lldb_r12d_x86_64, // Low 32 bits or r12 90 lldb_r13d_x86_64, // Low 32 bits or r13 91 lldb_r14d_x86_64, // Low 32 bits or r14 92 lldb_r15d_x86_64, // Low 32 bits or r15 93 lldb_ax_x86_64, lldb_bx_x86_64, lldb_cx_x86_64, lldb_dx_x86_64, 94 lldb_di_x86_64, lldb_si_x86_64, lldb_bp_x86_64, lldb_sp_x86_64, 95 lldb_r8w_x86_64, // Low 16 bits or r8 96 lldb_r9w_x86_64, // Low 16 bits or r9 97 lldb_r10w_x86_64, // Low 16 bits or r10 98 lldb_r11w_x86_64, // Low 16 bits or r11 99 lldb_r12w_x86_64, // Low 16 bits or r12 100 lldb_r13w_x86_64, // Low 16 bits or r13 101 lldb_r14w_x86_64, // Low 16 bits or r14 102 lldb_r15w_x86_64, // Low 16 bits or r15 103 lldb_ah_x86_64, lldb_bh_x86_64, lldb_ch_x86_64, lldb_dh_x86_64, 104 lldb_al_x86_64, lldb_bl_x86_64, lldb_cl_x86_64, lldb_dl_x86_64, 105 lldb_dil_x86_64, lldb_sil_x86_64, lldb_bpl_x86_64, lldb_spl_x86_64, 106 lldb_r8l_x86_64, // Low 8 bits or r8 107 lldb_r9l_x86_64, // Low 8 bits or r9 108 lldb_r10l_x86_64, // Low 8 bits or r10 109 lldb_r11l_x86_64, // Low 8 bits or r11 110 lldb_r12l_x86_64, // Low 8 bits or r12 111 lldb_r13l_x86_64, // Low 8 bits or r13 112 lldb_r14l_x86_64, // Low 8 bits or r14 113 lldb_r15l_x86_64, // Low 8 bits or r15 114 LLDB_INVALID_REGNUM // Register sets must be terminated with 115 // LLDB_INVALID_REGNUM. 116 }; 117 static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) - 118 1 == 119 k_num_gpr_registers_x86_64, 120 "g_gpr_regnums_x86_64 has wrong number of register infos"); 121 122 static const uint32_t g_lldb_regnums_x86_64[] = { 123 lldb_fctrl_x86_64, lldb_fstat_x86_64, lldb_ftag_x86_64, 124 lldb_fop_x86_64, lldb_fiseg_x86_64, lldb_fioff_x86_64, 125 lldb_foseg_x86_64, lldb_fooff_x86_64, lldb_mxcsr_x86_64, 126 lldb_mxcsrmask_x86_64, lldb_st0_x86_64, lldb_st1_x86_64, 127 lldb_st2_x86_64, lldb_st3_x86_64, lldb_st4_x86_64, 128 lldb_st5_x86_64, lldb_st6_x86_64, lldb_st7_x86_64, 129 lldb_mm0_x86_64, lldb_mm1_x86_64, lldb_mm2_x86_64, 130 lldb_mm3_x86_64, lldb_mm4_x86_64, lldb_mm5_x86_64, 131 lldb_mm6_x86_64, lldb_mm7_x86_64, lldb_xmm0_x86_64, 132 lldb_xmm1_x86_64, lldb_xmm2_x86_64, lldb_xmm3_x86_64, 133 lldb_xmm4_x86_64, lldb_xmm5_x86_64, lldb_xmm6_x86_64, 134 lldb_xmm7_x86_64, lldb_xmm8_x86_64, lldb_xmm9_x86_64, 135 lldb_xmm10_x86_64, lldb_xmm11_x86_64, lldb_xmm12_x86_64, 136 lldb_xmm13_x86_64, lldb_xmm14_x86_64, lldb_xmm15_x86_64, 137 LLDB_INVALID_REGNUM // Register sets must be terminated with 138 // LLDB_INVALID_REGNUM. 139 }; 140 static_assert((sizeof(g_lldb_regnums_x86_64) / 141 sizeof(g_lldb_regnums_x86_64[0])) - 142 1 == 143 k_num_fpr_registers_x86_64, 144 "g_lldb_regnums_x86_64 has wrong number of register infos"); 145 146 static const uint32_t g_avx_regnums_x86_64[] = { 147 lldb_ymm0_x86_64, lldb_ymm1_x86_64, lldb_ymm2_x86_64, lldb_ymm3_x86_64, 148 lldb_ymm4_x86_64, lldb_ymm5_x86_64, lldb_ymm6_x86_64, lldb_ymm7_x86_64, 149 lldb_ymm8_x86_64, lldb_ymm9_x86_64, lldb_ymm10_x86_64, lldb_ymm11_x86_64, 150 lldb_ymm12_x86_64, lldb_ymm13_x86_64, lldb_ymm14_x86_64, lldb_ymm15_x86_64, 151 LLDB_INVALID_REGNUM // Register sets must be terminated with 152 // LLDB_INVALID_REGNUM. 153 }; 154 static_assert((sizeof(g_avx_regnums_x86_64) / sizeof(g_avx_regnums_x86_64[0])) - 155 1 == 156 k_num_avx_registers_x86_64, 157 "g_avx_regnums_x86_64 has wrong number of register infos"); 158 159 uint32_t RegisterContextPOSIX_x86::g_contained_eax[] = {lldb_eax_i386, 160 LLDB_INVALID_REGNUM}; 161 uint32_t RegisterContextPOSIX_x86::g_contained_ebx[] = {lldb_ebx_i386, 162 LLDB_INVALID_REGNUM}; 163 uint32_t RegisterContextPOSIX_x86::g_contained_ecx[] = {lldb_ecx_i386, 164 LLDB_INVALID_REGNUM}; 165 uint32_t RegisterContextPOSIX_x86::g_contained_edx[] = {lldb_edx_i386, 166 LLDB_INVALID_REGNUM}; 167 uint32_t RegisterContextPOSIX_x86::g_contained_edi[] = {lldb_edi_i386, 168 LLDB_INVALID_REGNUM}; 169 uint32_t RegisterContextPOSIX_x86::g_contained_esi[] = {lldb_esi_i386, 170 LLDB_INVALID_REGNUM}; 171 uint32_t RegisterContextPOSIX_x86::g_contained_ebp[] = {lldb_ebp_i386, 172 LLDB_INVALID_REGNUM}; 173 uint32_t RegisterContextPOSIX_x86::g_contained_esp[] = {lldb_esp_i386, 174 LLDB_INVALID_REGNUM}; 175 176 uint32_t RegisterContextPOSIX_x86::g_invalidate_eax[] = { 177 lldb_eax_i386, lldb_ax_i386, lldb_ah_i386, lldb_al_i386, 178 LLDB_INVALID_REGNUM}; 179 uint32_t RegisterContextPOSIX_x86::g_invalidate_ebx[] = { 180 lldb_ebx_i386, lldb_bx_i386, lldb_bh_i386, lldb_bl_i386, 181 LLDB_INVALID_REGNUM}; 182 uint32_t RegisterContextPOSIX_x86::g_invalidate_ecx[] = { 183 lldb_ecx_i386, lldb_cx_i386, lldb_ch_i386, lldb_cl_i386, 184 LLDB_INVALID_REGNUM}; 185 uint32_t RegisterContextPOSIX_x86::g_invalidate_edx[] = { 186 lldb_edx_i386, lldb_dx_i386, lldb_dh_i386, lldb_dl_i386, 187 LLDB_INVALID_REGNUM}; 188 uint32_t RegisterContextPOSIX_x86::g_invalidate_edi[] = { 189 lldb_edi_i386, lldb_di_i386, LLDB_INVALID_REGNUM}; 190 uint32_t RegisterContextPOSIX_x86::g_invalidate_esi[] = { 191 lldb_esi_i386, lldb_si_i386, LLDB_INVALID_REGNUM}; 192 uint32_t RegisterContextPOSIX_x86::g_invalidate_ebp[] = { 193 lldb_ebp_i386, lldb_bp_i386, LLDB_INVALID_REGNUM}; 194 uint32_t RegisterContextPOSIX_x86::g_invalidate_esp[] = { 195 lldb_esp_i386, lldb_sp_i386, LLDB_INVALID_REGNUM}; 196 197 uint32_t RegisterContextPOSIX_x86::g_contained_rax[] = {lldb_rax_x86_64, 198 LLDB_INVALID_REGNUM}; 199 uint32_t RegisterContextPOSIX_x86::g_contained_rbx[] = {lldb_rbx_x86_64, 200 LLDB_INVALID_REGNUM}; 201 uint32_t RegisterContextPOSIX_x86::g_contained_rcx[] = {lldb_rcx_x86_64, 202 LLDB_INVALID_REGNUM}; 203 uint32_t RegisterContextPOSIX_x86::g_contained_rdx[] = {lldb_rdx_x86_64, 204 LLDB_INVALID_REGNUM}; 205 uint32_t RegisterContextPOSIX_x86::g_contained_rdi[] = {lldb_rdi_x86_64, 206 LLDB_INVALID_REGNUM}; 207 uint32_t RegisterContextPOSIX_x86::g_contained_rsi[] = {lldb_rsi_x86_64, 208 LLDB_INVALID_REGNUM}; 209 uint32_t RegisterContextPOSIX_x86::g_contained_rbp[] = {lldb_rbp_x86_64, 210 LLDB_INVALID_REGNUM}; 211 uint32_t RegisterContextPOSIX_x86::g_contained_rsp[] = {lldb_rsp_x86_64, 212 LLDB_INVALID_REGNUM}; 213 uint32_t RegisterContextPOSIX_x86::g_contained_r8[] = {lldb_r8_x86_64, 214 LLDB_INVALID_REGNUM}; 215 uint32_t RegisterContextPOSIX_x86::g_contained_r9[] = {lldb_r9_x86_64, 216 LLDB_INVALID_REGNUM}; 217 uint32_t RegisterContextPOSIX_x86::g_contained_r10[] = {lldb_r10_x86_64, 218 LLDB_INVALID_REGNUM}; 219 uint32_t RegisterContextPOSIX_x86::g_contained_r11[] = {lldb_r11_x86_64, 220 LLDB_INVALID_REGNUM}; 221 uint32_t RegisterContextPOSIX_x86::g_contained_r12[] = {lldb_r12_x86_64, 222 LLDB_INVALID_REGNUM}; 223 uint32_t RegisterContextPOSIX_x86::g_contained_r13[] = {lldb_r13_x86_64, 224 LLDB_INVALID_REGNUM}; 225 uint32_t RegisterContextPOSIX_x86::g_contained_r14[] = {lldb_r14_x86_64, 226 LLDB_INVALID_REGNUM}; 227 uint32_t RegisterContextPOSIX_x86::g_contained_r15[] = {lldb_r15_x86_64, 228 LLDB_INVALID_REGNUM}; 229 230 uint32_t RegisterContextPOSIX_x86::g_invalidate_rax[] = { 231 lldb_rax_x86_64, lldb_eax_x86_64, lldb_ax_x86_64, 232 lldb_ah_x86_64, lldb_al_x86_64, LLDB_INVALID_REGNUM}; 233 uint32_t RegisterContextPOSIX_x86::g_invalidate_rbx[] = { 234 lldb_rbx_x86_64, lldb_ebx_x86_64, lldb_bx_x86_64, 235 lldb_bh_x86_64, lldb_bl_x86_64, LLDB_INVALID_REGNUM}; 236 uint32_t RegisterContextPOSIX_x86::g_invalidate_rcx[] = { 237 lldb_rcx_x86_64, lldb_ecx_x86_64, lldb_cx_x86_64, 238 lldb_ch_x86_64, lldb_cl_x86_64, LLDB_INVALID_REGNUM}; 239 uint32_t RegisterContextPOSIX_x86::g_invalidate_rdx[] = { 240 lldb_rdx_x86_64, lldb_edx_x86_64, lldb_dx_x86_64, 241 lldb_dh_x86_64, lldb_dl_x86_64, LLDB_INVALID_REGNUM}; 242 uint32_t RegisterContextPOSIX_x86::g_invalidate_rdi[] = { 243 lldb_rdi_x86_64, lldb_edi_x86_64, lldb_di_x86_64, lldb_dil_x86_64, 244 LLDB_INVALID_REGNUM}; 245 uint32_t RegisterContextPOSIX_x86::g_invalidate_rsi[] = { 246 lldb_rsi_x86_64, lldb_esi_x86_64, lldb_si_x86_64, lldb_sil_x86_64, 247 LLDB_INVALID_REGNUM}; 248 uint32_t RegisterContextPOSIX_x86::g_invalidate_rbp[] = { 249 lldb_rbp_x86_64, lldb_ebp_x86_64, lldb_bp_x86_64, lldb_bpl_x86_64, 250 LLDB_INVALID_REGNUM}; 251 uint32_t RegisterContextPOSIX_x86::g_invalidate_rsp[] = { 252 lldb_rsp_x86_64, lldb_esp_x86_64, lldb_sp_x86_64, lldb_spl_x86_64, 253 LLDB_INVALID_REGNUM}; 254 uint32_t RegisterContextPOSIX_x86::g_invalidate_r8[] = { 255 lldb_r8_x86_64, lldb_r8d_x86_64, lldb_r8w_x86_64, lldb_r8l_x86_64, 256 LLDB_INVALID_REGNUM}; 257 uint32_t RegisterContextPOSIX_x86::g_invalidate_r9[] = { 258 lldb_r9_x86_64, lldb_r9d_x86_64, lldb_r9w_x86_64, lldb_r9l_x86_64, 259 LLDB_INVALID_REGNUM}; 260 uint32_t RegisterContextPOSIX_x86::g_invalidate_r10[] = { 261 lldb_r10_x86_64, lldb_r10d_x86_64, lldb_r10w_x86_64, lldb_r10l_x86_64, 262 LLDB_INVALID_REGNUM}; 263 uint32_t RegisterContextPOSIX_x86::g_invalidate_r11[] = { 264 lldb_r11_x86_64, lldb_r11d_x86_64, lldb_r11w_x86_64, lldb_r11l_x86_64, 265 LLDB_INVALID_REGNUM}; 266 uint32_t RegisterContextPOSIX_x86::g_invalidate_r12[] = { 267 lldb_r12_x86_64, lldb_r12d_x86_64, lldb_r12w_x86_64, lldb_r12l_x86_64, 268 LLDB_INVALID_REGNUM}; 269 uint32_t RegisterContextPOSIX_x86::g_invalidate_r13[] = { 270 lldb_r13_x86_64, lldb_r13d_x86_64, lldb_r13w_x86_64, lldb_r13l_x86_64, 271 LLDB_INVALID_REGNUM}; 272 uint32_t RegisterContextPOSIX_x86::g_invalidate_r14[] = { 273 lldb_r14_x86_64, lldb_r14d_x86_64, lldb_r14w_x86_64, lldb_r14l_x86_64, 274 LLDB_INVALID_REGNUM}; 275 uint32_t RegisterContextPOSIX_x86::g_invalidate_r15[] = { 276 lldb_r15_x86_64, lldb_r15d_x86_64, lldb_r15w_x86_64, lldb_r15l_x86_64, 277 LLDB_INVALID_REGNUM}; 278 279 // Number of register sets provided by this context. 280 enum { k_num_extended_register_sets = 1, k_num_register_sets = 3 }; 281 282 static const RegisterSet g_reg_sets_i386[k_num_register_sets] = { 283 {"General Purpose Registers", "gpr", k_num_gpr_registers_i386, 284 g_gpr_regnums_i386}, 285 {"Floating Point Registers", "fpu", k_num_fpr_registers_i386, 286 g_lldb_regnums_i386}, 287 {"Advanced Vector Extensions", "avx", k_num_avx_registers_i386, 288 g_avx_regnums_i386}}; 289 290 static const RegisterSet g_reg_sets_x86_64[k_num_register_sets] = { 291 {"General Purpose Registers", "gpr", k_num_gpr_registers_x86_64, 292 g_gpr_regnums_x86_64}, 293 {"Floating Point Registers", "fpu", k_num_fpr_registers_x86_64, 294 g_lldb_regnums_x86_64}, 295 {"Advanced Vector Extensions", "avx", k_num_avx_registers_x86_64, 296 g_avx_regnums_x86_64}}; 297 298 bool RegisterContextPOSIX_x86::IsGPR(unsigned reg) { 299 return reg <= m_reg_info.last_gpr; // GPR's come first. 300 } 301 302 bool RegisterContextPOSIX_x86::IsFPR(unsigned reg) { 303 return (m_reg_info.first_fpr <= reg && reg <= m_reg_info.last_fpr); 304 } 305 306 bool RegisterContextPOSIX_x86::IsAVX(unsigned reg) { 307 return (m_reg_info.first_ymm <= reg && reg <= m_reg_info.last_ymm); 308 } 309 310 bool RegisterContextPOSIX_x86::IsFPR(unsigned reg, FPRType fpr_type) { 311 bool generic_fpr = IsFPR(reg); 312 313 if (fpr_type == eXSAVE) 314 return generic_fpr || IsAVX(reg); 315 return generic_fpr; 316 } 317 318 RegisterContextPOSIX_x86::RegisterContextPOSIX_x86( 319 Thread &thread, uint32_t concrete_frame_idx, 320 RegisterInfoInterface *register_info) 321 : RegisterContext(thread, concrete_frame_idx) { 322 m_register_info_ap.reset(register_info); 323 324 switch (register_info->m_target_arch.GetMachine()) { 325 case llvm::Triple::x86: 326 m_reg_info.num_registers = k_num_registers_i386; 327 m_reg_info.num_gpr_registers = k_num_gpr_registers_i386; 328 m_reg_info.num_fpr_registers = k_num_fpr_registers_i386; 329 m_reg_info.num_avx_registers = k_num_avx_registers_i386; 330 m_reg_info.last_gpr = k_last_gpr_i386; 331 m_reg_info.first_fpr = k_first_fpr_i386; 332 m_reg_info.last_fpr = k_last_fpr_i386; 333 m_reg_info.first_st = lldb_st0_i386; 334 m_reg_info.last_st = lldb_st7_i386; 335 m_reg_info.first_mm = lldb_mm0_i386; 336 m_reg_info.last_mm = lldb_mm7_i386; 337 m_reg_info.first_xmm = lldb_xmm0_i386; 338 m_reg_info.last_xmm = lldb_xmm7_i386; 339 m_reg_info.first_ymm = lldb_ymm0_i386; 340 m_reg_info.last_ymm = lldb_ymm7_i386; 341 m_reg_info.first_dr = lldb_dr0_i386; 342 m_reg_info.gpr_flags = lldb_eflags_i386; 343 break; 344 case llvm::Triple::x86_64: 345 m_reg_info.num_registers = k_num_registers_x86_64; 346 m_reg_info.num_gpr_registers = k_num_gpr_registers_x86_64; 347 m_reg_info.num_fpr_registers = k_num_fpr_registers_x86_64; 348 m_reg_info.num_avx_registers = k_num_avx_registers_x86_64; 349 m_reg_info.last_gpr = k_last_gpr_x86_64; 350 m_reg_info.first_fpr = k_first_fpr_x86_64; 351 m_reg_info.last_fpr = k_last_fpr_x86_64; 352 m_reg_info.first_st = lldb_st0_x86_64; 353 m_reg_info.last_st = lldb_st7_x86_64; 354 m_reg_info.first_mm = lldb_mm0_x86_64; 355 m_reg_info.last_mm = lldb_mm7_x86_64; 356 m_reg_info.first_xmm = lldb_xmm0_x86_64; 357 m_reg_info.last_xmm = lldb_xmm15_x86_64; 358 m_reg_info.first_ymm = lldb_ymm0_x86_64; 359 m_reg_info.last_ymm = lldb_ymm15_x86_64; 360 m_reg_info.first_dr = lldb_dr0_x86_64; 361 m_reg_info.gpr_flags = lldb_rflags_x86_64; 362 break; 363 default: 364 assert(false && "Unhandled target architecture."); 365 break; 366 } 367 368 // Initialize m_iovec to point to the buffer and buffer size 369 // using the conventions of Berkeley style UIO structures, as required 370 // by PTRACE extensions. 371 m_iovec.iov_base = &m_fpr.xstate.xsave; 372 m_iovec.iov_len = sizeof(m_fpr.xstate.xsave); 373 374 ::memset(&m_fpr, 0, sizeof(FPR)); 375 376 // elf-core yet to support ReadFPR() 377 ProcessSP base = CalculateProcess(); 378 if (base.get()->GetPluginName() == ProcessElfCore::GetPluginNameStatic()) 379 return; 380 381 m_fpr_type = eNotValid; 382 } 383 384 RegisterContextPOSIX_x86::~RegisterContextPOSIX_x86() {} 385 386 RegisterContextPOSIX_x86::FPRType RegisterContextPOSIX_x86::GetFPRType() { 387 if (m_fpr_type == eNotValid) { 388 // TODO: Use assembly to call cpuid on the inferior and query ebx or ecx 389 m_fpr_type = eXSAVE; // extended floating-point registers, if available 390 if (false == ReadFPR()) 391 m_fpr_type = eFXSAVE; // assume generic floating-point registers 392 } 393 return m_fpr_type; 394 } 395 396 void RegisterContextPOSIX_x86::Invalidate() {} 397 398 void RegisterContextPOSIX_x86::InvalidateAllRegisters() {} 399 400 unsigned RegisterContextPOSIX_x86::GetRegisterOffset(unsigned reg) { 401 assert(reg < m_reg_info.num_registers && "Invalid register number."); 402 return GetRegisterInfo()[reg].byte_offset; 403 } 404 405 unsigned RegisterContextPOSIX_x86::GetRegisterSize(unsigned reg) { 406 assert(reg < m_reg_info.num_registers && "Invalid register number."); 407 return GetRegisterInfo()[reg].byte_size; 408 } 409 410 size_t RegisterContextPOSIX_x86::GetRegisterCount() { 411 size_t num_registers = 412 m_reg_info.num_gpr_registers + m_reg_info.num_fpr_registers; 413 if (GetFPRType() == eXSAVE) 414 return num_registers + m_reg_info.num_avx_registers; 415 return num_registers; 416 } 417 418 size_t RegisterContextPOSIX_x86::GetGPRSize() { 419 return m_register_info_ap->GetGPRSize(); 420 } 421 422 const RegisterInfo *RegisterContextPOSIX_x86::GetRegisterInfo() { 423 // Commonly, this method is overridden and g_register_infos is copied and 424 // specialized. 425 // So, use GetRegisterInfo() rather than g_register_infos in this scope. 426 return m_register_info_ap->GetRegisterInfo(); 427 } 428 429 const RegisterInfo * 430 RegisterContextPOSIX_x86::GetRegisterInfoAtIndex(size_t reg) { 431 if (reg < m_reg_info.num_registers) 432 return &GetRegisterInfo()[reg]; 433 else 434 return NULL; 435 } 436 437 size_t RegisterContextPOSIX_x86::GetRegisterSetCount() { 438 size_t sets = 0; 439 for (size_t set = 0; set < k_num_register_sets; ++set) { 440 if (IsRegisterSetAvailable(set)) 441 ++sets; 442 } 443 444 return sets; 445 } 446 447 const RegisterSet *RegisterContextPOSIX_x86::GetRegisterSet(size_t set) { 448 if (IsRegisterSetAvailable(set)) { 449 switch (m_register_info_ap->m_target_arch.GetMachine()) { 450 case llvm::Triple::x86: 451 return &g_reg_sets_i386[set]; 452 case llvm::Triple::x86_64: 453 return &g_reg_sets_x86_64[set]; 454 default: 455 assert(false && "Unhandled target architecture."); 456 return NULL; 457 } 458 } 459 return NULL; 460 } 461 462 const char *RegisterContextPOSIX_x86::GetRegisterName(unsigned reg) { 463 assert(reg < m_reg_info.num_registers && "Invalid register offset."); 464 return GetRegisterInfo()[reg].name; 465 } 466 467 lldb::ByteOrder RegisterContextPOSIX_x86::GetByteOrder() { 468 // Get the target process whose privileged thread was used for the register 469 // read. 470 lldb::ByteOrder byte_order = eByteOrderInvalid; 471 Process *process = CalculateProcess().get(); 472 473 if (process) 474 byte_order = process->GetByteOrder(); 475 return byte_order; 476 } 477 478 // Parse ymm registers and into xmm.bytes and ymmh.bytes. 479 bool RegisterContextPOSIX_x86::CopyYMMtoXSTATE(uint32_t reg, 480 lldb::ByteOrder byte_order) { 481 if (!IsAVX(reg)) 482 return false; 483 484 if (byte_order == eByteOrderLittle) { 485 ::memcpy(m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes, 486 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes, sizeof(XMMReg)); 487 ::memcpy(m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes, 488 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg), 489 sizeof(YMMHReg)); 490 return true; 491 } 492 493 if (byte_order == eByteOrderBig) { 494 ::memcpy(m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes, 495 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg), 496 sizeof(XMMReg)); 497 ::memcpy(m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes, 498 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes, sizeof(YMMHReg)); 499 return true; 500 } 501 return false; // unsupported or invalid byte order 502 } 503 504 // Concatenate xmm.bytes with ymmh.bytes 505 bool RegisterContextPOSIX_x86::CopyXSTATEtoYMM(uint32_t reg, 506 lldb::ByteOrder byte_order) { 507 if (!IsAVX(reg)) 508 return false; 509 510 if (byte_order == eByteOrderLittle) { 511 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes, 512 m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes, 513 sizeof(XMMReg)); 514 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg), 515 m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes, 516 sizeof(YMMHReg)); 517 return true; 518 } 519 520 if (byte_order == eByteOrderBig) { 521 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg), 522 m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes, 523 sizeof(XMMReg)); 524 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes, 525 m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes, 526 sizeof(YMMHReg)); 527 return true; 528 } 529 return false; // unsupported or invalid byte order 530 } 531 532 bool RegisterContextPOSIX_x86::IsRegisterSetAvailable(size_t set_index) { 533 // Note: Extended register sets are assumed to be at the end of g_reg_sets... 534 size_t num_sets = k_num_register_sets - k_num_extended_register_sets; 535 536 if (GetFPRType() == eXSAVE) // ...and to start with AVX registers. 537 ++num_sets; 538 return (set_index < num_sets); 539 } 540 541 // Used when parsing DWARF and EH frame information and any other 542 // object file sections that contain register numbers in them. 543 uint32_t RegisterContextPOSIX_x86::ConvertRegisterKindToRegisterNumber( 544 lldb::RegisterKind kind, uint32_t num) { 545 const uint32_t num_regs = GetRegisterCount(); 546 547 assert(kind < kNumRegisterKinds); 548 for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) { 549 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg_idx); 550 551 if (reg_info->kinds[kind] == num) 552 return reg_idx; 553 } 554 555 return LLDB_INVALID_REGNUM; 556 } 557