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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 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528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 | #!/usr/bin/python # #source of register info is from http://opensource.apple.com/source/gdb/gdb-962/src/gdb/arm-tdep.c import lldb import struct osplugin_target_obj = None class PluginValue(lldb.SBValue): def GetChildMemberWithName(val, name): val_type = val.GetType() if val_type.IsPointerType() == True: val_type = val_type.GetPointeeType() for i in range(val_type.GetNumberOfFields()): if name == val_type.GetFieldAtIndex(i).GetName(): return PluginValue(val.GetChildAtIndex(i)) return None class Armv7_RegisterSet(object): """ register info set for armv7 32 bit architecture """ def __init__(self): self.register_info = {} self.register_info['sets'] = ['GPR'] self.register_info['registers'] = [ { 'name':'r0' , 'bitsize' : 32, 'offset' : 0, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 0, 'dwarf' : 0}, { 'name':'r1' , 'bitsize' : 32, 'offset' : 4, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 1, 'dwarf' : 1}, { 'name':'r2' , 'bitsize' : 32, 'offset' : 8, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 2, 'dwarf' : 2}, { 'name':'r3' , 'bitsize' : 32, 'offset' : 12, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 3, 'dwarf' : 3}, { 'name':'r4' , 'bitsize' : 32, 'offset' : 16, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 4, 'dwarf' : 4}, { 'name':'r5' , 'bitsize' : 32, 'offset' : 20, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 5, 'dwarf' : 5}, { 'name':'r6' , 'bitsize' : 32, 'offset' : 24, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 6, 'dwarf' : 6}, { 'name':'r7' , 'bitsize' : 32, 'offset' : 28, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 7, 'dwarf' : 7}, { 'name':'r8' , 'bitsize' : 32, 'offset' : 32, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 8, 'dwarf' : 8}, { 'name':'r9' , 'bitsize' : 32, 'offset' : 36, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc': 9, 'dwarf' : 9}, { 'name':'r10' , 'bitsize' : 32, 'offset' : 40, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':10, 'dwarf' :10}, { 'name':'r11' , 'bitsize' : 32, 'offset' : 44, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':11, 'dwarf' :11, 'alt-name': 'fp', 'generic': 'fp'}, { 'name':'r12' , 'bitsize' : 32, 'offset' : 48, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':12, 'dwarf' :12}, { 'name':'sp' , 'bitsize' : 32, 'offset' : 52, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':13, 'dwarf' :13, 'alt-name': 'sp', 'generic': 'sp'}, { 'name':'lr' , 'bitsize' : 32, 'offset' : 56, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':14, 'dwarf' :14, 'alt-name': 'lr', 'generic': 'lr'}, { 'name':'pc' , 'bitsize' : 32, 'offset' : 60, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':15, 'dwarf' :15, 'alt-name': 'pc', 'generic': 'pc'}, { 'name':'cpsr' , 'bitsize' : 32, 'offset' : 64, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':25, 'dwarf' :16, 'alt-name':'cpsr','generic':'cpsr'}, { 'name':'fsr' , 'bitsize' : 32, 'offset' : 68, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':17, 'dwarf' :17, 'alt-name':'fsr', 'generic': 'fsr'}, { 'name':'far' , 'bitsize' : 32, 'offset' : 72, 'encoding':'uint', 'format':'hex', 'set':0, 'gcc':18, 'dwarf' :18, 'alt-name': 'far', 'generic': 'far'} ] self.switch_context_address = osplugin_target_obj.FindSymbols('load_reg')[0].GetSymbol().GetStartAddress().GetLoadAddress(osplugin_target_obj) + 8 self.ResetRegisterValues() def ResetRegisterValues(self): self.r0 = 0 self.r1 = 0 self.r2 = 0 self.r3 = 0 self.r4 = 0 self.r5 = 0 self.r6 = 0 self.r7 = 0 self.r8 = 0 self.r9 = 0 self.r10 = 0 self.r11 = 0 self.r12 = 0 self.sp = 0 self.lr = 0 self.pc = 0 self.cpsr = 0 self.fsr = 0 self.far = 0 def __str__(self): return """ r0 = {o.r0: <#010x} r1 = {o.r1: <#010x} r2 = {o.r2: <#010x} r3 = {o.r3: <#010x} r4 = {o.r4: <#010x} r5 = {o.r5: <#010x} r6 = {o.r6: <#010x} r7 = {o.r7: <#010x} r8 = {o.r8: <#010x} r9 = {o.r9: <#010x} r10 = {o.r10: <#010x} r11 = {o.r11: <#010x} r12 = {o.r12: <#010x} sp = {o.sp: <#010x} lr = {o.lr: <#010x} pc = {o.pc: <#010x} cpsr = {o.cpsr: <#010x} fsr = {o.fsr : <#010x} far = {o.far : <#010x} """.format(o=self) def GetPackedRegisterState(self): return struct.pack('19I', self.r0, self.r1, self.r2, self.r3, self.r4, self.r5, self.r6, self.r7, self.r8, self.r9, self.r10, self.r11, self.r12, self.sp, self.lr, self.pc, self.cpsr, self.fsr, self.far) def ReadRegisterDataFromKDPSavedState(self, kdp_state, kernel_version): saved_state = kernel_version.CreateValueFromExpression(None, '(struct arm_saved_state *) ' + str(kdp_state.GetValueAsUnsigned())) saved_state = saved_state.Dereference() saved_state = PluginValue(saved_state) self.ResetRegisterValues() self.r0 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(0).GetValueAsUnsigned() self.r1 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(1).GetValueAsUnsigned() self.r2 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(2).GetValueAsUnsigned() self.r3 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(3).GetValueAsUnsigned() self.r4 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(4).GetValueAsUnsigned() self.r5 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(5).GetValueAsUnsigned() self.r6 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(6).GetValueAsUnsigned() self.r7 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(7).GetValueAsUnsigned() self.r8 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(8).GetValueAsUnsigned() self.r9 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(9).GetValueAsUnsigned() self.r10 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(10).GetValueAsUnsigned() self.r11 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(11).GetValueAsUnsigned() self.r12 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(12).GetValueAsUnsigned() self.sp = saved_state.GetChildMemberWithName('sp').GetValueAsUnsigned() self.lr = saved_state.GetChildMemberWithName('lr').GetValueAsUnsigned() self.pc = saved_state.GetChildMemberWithName('pc').GetValueAsUnsigned() self.cpsr = saved_state.GetChildMemberWithName('cpsr').GetValueAsUnsigned() self.fsr = saved_state.GetChildMemberWithName('fsr').GetValueAsUnsigned() self.far = saved_state.GetChildMemberWithName('far').GetValueAsUnsigned() return self def ReadRegisterDataFromKernelStack(self, kstack_saved_state_addr, kernel_version): saved_state = kernel_version.CreateValueFromExpression(None, '(struct arm_saved_state *) '+ str(kstack_saved_state_addr)) saved_state = saved_state.Dereference() saved_state = PluginValue(saved_state) self.ResetRegisterValues() self.r0 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(0).GetValueAsUnsigned() self.r1 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(1).GetValueAsUnsigned() self.r2 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(2).GetValueAsUnsigned() self.r3 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(3).GetValueAsUnsigned() self.r4 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(4).GetValueAsUnsigned() self.r5 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(5).GetValueAsUnsigned() self.r6 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(6).GetValueAsUnsigned() self.r7 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(7).GetValueAsUnsigned() self.r8 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(8).GetValueAsUnsigned() self.r9 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(9).GetValueAsUnsigned() self.r10 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(10).GetValueAsUnsigned() self.r11 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(11).GetValueAsUnsigned() self.r12 = saved_state.GetChildMemberWithName('r').GetChildAtIndex(12).GetValueAsUnsigned() self.sp = saved_state.GetChildMemberWithName('sp').GetValueAsUnsigned() self.lr = saved_state.GetChildMemberWithName('lr').GetValueAsUnsigned() # pc for a blocked thread is treated to be the next instruction it would run after thread switch. self.pc = self.switch_context_address self.cpsr = saved_state.GetChildMemberWithName('cpsr').GetValueAsUnsigned() self.fsr = saved_state.GetChildMemberWithName('fsr').GetValueAsUnsigned() self.far = saved_state.GetChildMemberWithName('far').GetValueAsUnsigned() return self def ReadRegisterDataFromContinuation(self, continuation_ptr): self.ResetRegisterValues() self.pc = continuation_ptr return self class I386_RegisterSet(object): """ register info set for i386 architecture """ def __init__(self): self.register_info = [] self.register_info['sets'] = ['GPR'] self.register_info['registers'] = [ { 'name': 'eax' , 'bitsize': 32, 'offset' : 0, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 0, 'dwarf': 0}, { 'name': 'ebx' , 'bitsize': 32, 'offset' : 4, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 1, 'dwarf': 1}, { 'name': 'ecx' , 'bitsize': 32, 'offset' : 8, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 2, 'dwarf': 2}, { 'name': 'edx' , 'bitsize': 32, 'offset' :12, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 3, 'dwarf': 3}, { 'name': 'edi' , 'bitsize': 32, 'offset' :16, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 4, 'dwarf': 4}, { 'name': 'esi' , 'bitsize': 32, 'offset' :20, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 5, 'dwarf': 5}, { 'name': 'ebp' , 'bitsize': 32, 'offset' :24, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 6, 'dwarf': 6}, { 'name': 'esp' , 'bitsize': 32, 'offset' :28, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 7, 'dwarf': 7}, { 'name': 'ss' , 'bitsize': 32, 'offset' :32, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 8, 'dwarf': 8}, { 'name': 'eflags', 'bitsize': 32, 'offset' :36, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' : 9, 'dwarf': 9}, { 'name': 'eip' , 'bitsize': 32, 'offset' :40, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :10, 'dwarf':10}, { 'name': 'cs' , 'bitsize': 32, 'offset' :44, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :11, 'dwarf':11}, { 'name': 'ds' , 'bitsize': 32, 'offset' :48, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :12, 'dwarf':12}, { 'name': 'es' , 'bitsize': 32, 'offset' :52, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :13, 'dwarf':13}, { 'name': 'fs' , 'bitsize': 32, 'offset' :56, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :14, 'dwarf':14}, { 'name': 'gs' , 'bitsize': 32, 'offset' :60, 'encoding': 'uint' , 'format':'hex' , 'set': 0, 'gcc' :15, 'dwarf':15}, ] self.ResetRegisterValues() def ResetRegisterValues(self): """ set all registers to zero """ self.eax = 0 self.ebx = 0 self.ecx = 0 self.edx = 0 self.edi = 0 self.esi = 0 self.ebp = 0 self.esp = 0 self.ss = 0 self.eflags = 0 self.eip = 0 self.cs = 0 self.ds = 0 self.es = 0 self.fs = 0 self.gs = 0 def __str__(self): return """ eax = {o.eax: #010x} ebx = {o.ebx: #010x} ecx = {o.ecx: #010x} edx = {o.edx: #010x} edi = {o.edi: #010x} esi = {o.esi: #010x} ebp = {o.ebp: #010x} esp = {o.esp: #010x} ss = {o.ss: #010x} eflags = {o.eflags: #010x} eip = {o.eip: #010x} cs = {o.cs: #010x} ds = {o.ds: #010x} es = {o.es: #010x} fs = {o.fs: #010x} gs = {o.gs: #010x} """.format(o=self) def GetPackedRegisterState(self): """ get a struct.pack register data """ return struct.pack('16I', self.eax, self.ebx, self.ecx, self.edx, self.edi, self.esi, self.ebp, self.esp, self.ss, self.eflags, self.eip, self.cs, self.ds, self.es, self.fs, self.gs ) def ReadRegisterDataFromKDPSavedState(self, kdp_state, kernel_version): """ to be implemented""" return None def ReadRegisterDataFromKernelStack(self, kstack_saved_state_addr, kernel_version): """ to be implemented """ return None def ReadRegisterDataFromContinuation(self, continuation_ptr): self.ResetRegisterValues() self.eip = continuation_ptr return self class X86_64RegisterSet(object): """ register info set for x86_64 architecture """ def __init__(self): self.register_info = {} self.register_info['sets'] = ['GPR', 'FPU', 'EXC'] self.register_info['registers'] = [ { 'name':'rax' , 'bitsize' : 64, 'offset' : 0, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 0, 'dwarf' : 0}, { 'name':'rbx' , 'bitsize' : 64, 'offset' : 8, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 3, 'dwarf' : 3}, { 'name':'rcx' , 'bitsize' : 64, 'offset' : 16, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 2, 'dwarf' : 2, 'generic':'arg4', 'alt-name':'arg4', }, { 'name':'rdx' , 'bitsize' : 64, 'offset' : 24, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 1, 'dwarf' : 1, 'generic':'arg3', 'alt-name':'arg3', }, { 'name':'rdi' , 'bitsize' : 64, 'offset' : 32, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 5, 'dwarf' : 5, 'generic':'arg1', 'alt-name':'arg1', }, { 'name':'rsi' , 'bitsize' : 64, 'offset' : 40, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 4, 'dwarf' : 4, 'generic':'arg2', 'alt-name':'arg2', }, { 'name':'rbp' , 'bitsize' : 64, 'offset' : 48, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 6, 'dwarf' : 6, 'generic':'fp' , 'alt-name':'fp', }, { 'name':'rsp' , 'bitsize' : 64, 'offset' : 56, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 7, 'dwarf' : 7, 'generic':'sp' , 'alt-name':'sp', }, { 'name':'r8' , 'bitsize' : 64, 'offset' : 64, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 8, 'dwarf' : 8, 'generic':'arg5', 'alt-name':'arg5', }, { 'name':'r9' , 'bitsize' : 64, 'offset' : 72, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 9, 'dwarf' : 9, 'generic':'arg6', 'alt-name':'arg6', }, { 'name':'r10' , 'bitsize' : 64, 'offset' : 80, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 10, 'dwarf' : 10}, { 'name':'r11' , 'bitsize' : 64, 'offset' : 88, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 11, 'dwarf' : 11}, { 'name':'r12' , 'bitsize' : 64, 'offset' : 96, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 12, 'dwarf' : 12}, { 'name':'r13' , 'bitsize' : 64, 'offset' : 104, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 13, 'dwarf' : 13}, { 'name':'r14' , 'bitsize' : 64, 'offset' : 112, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 14, 'dwarf' : 14}, { 'name':'r15' , 'bitsize' : 64, 'offset' : 120, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 15, 'dwarf' : 15}, { 'name':'rip' , 'bitsize' : 64, 'offset' : 128, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'gcc' : 16, 'dwarf' : 16, 'generic':'pc', 'alt-name':'pc' }, { 'name':'rflags' , 'bitsize' : 64, 'offset' : 136, 'encoding':'uint' , 'format':'hex' , 'set': 0, 'generic':'flags', 'alt-name':'flags' }, { 'name':'cs' , 'bitsize' : 64, 'offset' : 144, 'encoding':'uint' , 'format':'hex' , 'set': 0 }, { 'name':'fs' , 'bitsize' : 64, 'offset' : 152, 'encoding':'uint' , 'format':'hex' , 'set': 0 }, { 'name':'gs' , 'bitsize' : 64, 'offset' : 160, 'encoding':'uint' , 'format':'hex' , 'set': 0 }, ] self.ResetRegisterValues() def ResetRegisterValues(self): """ set all the registers to zero. """ self.rax = 0 self.rbx = 0 self.rcx = 0 self.rdx = 0 self.rdi = 0 self.rsi = 0 self.rbp = 0 self.rsp = 0 self.r8 = 0 self.r9 = 0 self.r10 = 0 self.r11 = 0 self.r12 = 0 self.r13 = 0 self.r14 = 0 self.r15 = 0 self.rip = 0 self.rflags = 0 self.cs = 0 self.fs = 0 self.gs = 0 def __str__(self): return """ rax = {o.rax: <#018x} rbx = {o.rbx: <#018x} rcx = {o.rcx: <#018x} rdx = {o.rdx: <#018x} rdi = {o.rdi: <#018x} rsi = {o.rsi: <#018x} rbp = {o.rbp: <#018x} rsp = {o.rsp: <#018x} r8 = {o.r8: <#018x} r9 = {o.r9: <#018x} r10 = {o.r10: <#018x} r11 = {o.r11: <#018x} r12 = {o.r12: <#018x} r13 = {o.r13: <#018x} r14 = {o.r14: <#018x} r15 = {o.r15: <#018x} rip = {o.rip: <#018x} rflags = {o.rflags: <#018x} cs = {o.cs: <#018x} fs = {o.fs: <#018x} gs = {o.gs: <#018x} """.format(o=self) def GetPackedRegisterState(self): """ get a struct.pack register data for passing to C constructs """ return struct.pack('21Q', self.rax, self.rbx, self.rcx, self.rdx, self.rdi, self.rsi, self.rbp, self.rsp, self.r8, self.r9, self.r10, self.r11, self.r12, self.r13, self.r14, self.r15, self.rip, self.rflags, self.cs, self.fs, self.gs) def ReadRegisterDataFromKDPSavedState(self, kdp_state, kernel_version): saved_state = kernel_version.CreateValueFromExpression(None, '(struct x86_saved_state64 *) '+ str(kdp_state.GetValueAsUnsigned())) saved_state = saved_state.Dereference() saved_state = PluginValue(saved_state) self.ResetRegisterValues() self.rdi = saved_state.GetChildMemberWithName('rdi').GetValueAsUnsigned() self.rsi = saved_state.GetChildMemberWithName('rsi').GetValueAsUnsigned() self.rdx = saved_state.GetChildMemberWithName('rdx').GetValueAsUnsigned() self.r10 = saved_state.GetChildMemberWithName('r10').GetValueAsUnsigned() self.r8 = saved_state.GetChildMemberWithName('r8').GetValueAsUnsigned() self.r9 = saved_state.GetChildMemberWithName('r9').GetValueAsUnsigned() self.r15 = saved_state.GetChildMemberWithName('r15').GetValueAsUnsigned() self.r14 = saved_state.GetChildMemberWithName('r14').GetValueAsUnsigned() self.r13 = saved_state.GetChildMemberWithName('r13').GetValueAsUnsigned() self.r12 = saved_state.GetChildMemberWithName('r12').GetValueAsUnsigned() self.r11 = saved_state.GetChildMemberWithName('r11').GetValueAsUnsigned() self.rbp = saved_state.GetChildMemberWithName('rbp').GetValueAsUnsigned() self.rbx = saved_state.GetChildMemberWithName('rbx').GetValueAsUnsigned() self.rcx = saved_state.GetChildMemberWithName('rcx').GetValueAsUnsigned() self.rax = saved_state.GetChildMemberWithName('rax').GetValueAsUnsigned() self.rip = saved_state.GetChildMemberWithName('isf').GetChildMemberWithName('rip').GetValueAsUnsigned() self.rflags = saved_state.GetChildMemberWithName('isf').GetChildMemberWithName('rflags').GetValueAsUnsigned() self.rsp = saved_state.GetChildMemberWithName('isf').GetChildMemberWithName('rsp').GetValueAsUnsigned() return self def ReadRegisterDataFromKernelStack(self, kstack_saved_state_addr, kernel_version): saved_state = kernel_version.CreateValueFromExpression(None, '(struct x86_kernel_state *) '+ str(kstack_saved_state_addr)) saved_state = saved_state.Dereference() saved_state = PluginValue(saved_state) self.ResetRegisterValues() self.rbx = saved_state.GetChildMemberWithName('k_rbx').GetValueAsUnsigned() self.rsp = saved_state.GetChildMemberWithName('k_rsp').GetValueAsUnsigned() self.rbp = saved_state.GetChildMemberWithName('k_rbp').GetValueAsUnsigned() self.r12 = saved_state.GetChildMemberWithName('k_r12').GetValueAsUnsigned() self.r13 = saved_state.GetChildMemberWithName('k_r13').GetValueAsUnsigned() self.r14 = saved_state.GetChildMemberWithName('k_r14').GetValueAsUnsigned() self.r15 = saved_state.GetChildMemberWithName('k_r15').GetValueAsUnsigned() self.rip = saved_state.GetChildMemberWithName('k_rip').GetValueAsUnsigned() return self def ReadRegisterDataFromContinuation(self, continuation_ptr): self.ResetRegisterValues() self.rip = continuation_ptr return self def IterateQueue(queue_head, element_ptr_type, element_field_name): """ iterate over a queue in kernel of type queue_head_t. refer to osfmk/kern/queue.h params: queue_head - lldb.SBValue : Value object for queue_head. element_type - lldb.SBType : a pointer type of the element 'next' points to. Typically its structs like thread, task etc.. element_field_name - str : name of the field in target struct. returns: A generator does not return. It is used for iterating. SBValue : an object thats of type (element_type) queue_head->next. Always a pointer object """ queue_head_addr = 0x0 if queue_head.TypeIsPointerType(): queue_head_addr = queue_head.GetValueAsUnsigned() else: queue_head_addr = queue_head.GetAddress().GetLoadAddress(osplugin_target_obj) cur_elt = queue_head.GetChildMemberWithName('next') while True: if not cur_elt.IsValid() or cur_elt.GetValueAsUnsigned() == 0 or cur_elt.GetValueAsUnsigned() == queue_head_addr: break elt = cur_elt.Cast(element_ptr_type) yield elt cur_elt = elt.GetChildMemberWithName(element_field_name).GetChildMemberWithName('next') def GetUniqueSessionID(process_obj): """ Create a unique session identifier. params: process_obj: lldb.SBProcess object refering to connected process. returns: int - a unique number identified by processid and stopid. """ session_key_str = "" if hasattr(process_obj, "GetUniqueID"): session_key_str += str(process_obj.GetUniqueID()) + ":" else: session_key_str += "0:" if hasattr(process_obj, "GetStopID"): session_key_str += str(process_obj.GetStopID()) else: session_key_str +="1" return hash(session_key_str) (archX86_64, archARMv7_family, archI386) = ("x86_64", ("armv7", "armv7s") , "i386") class OperatingSystemPlugIn(object): """Class that provides data for an instance of a LLDB 'OperatingSystemPython' plug-in class""" def __init__(self, process): '''Initialization needs a valid.SBProcess object''' self.process = None self.registers = None self.threads = None self.thread_cache = {} self.current_session_id = 0 self.kdp_thread = None if type(process) is lldb.SBProcess and process.IsValid(): global osplugin_target_obj self.process = process self._target = process.target osplugin_target_obj = self._target self.current_session_id = GetUniqueSessionID(self.process) self.version = self._target.FindGlobalVariables('version', 0).GetValueAtIndex(0) self.kernel_stack_size = self._target.FindGlobalVariables('kernel_stack_size', 0).GetValueAtIndex(0).GetValueAsUnsigned() self.kernel_context_size = 0 self.connected_over_kdp = False plugin_string = self.process.GetPluginName().lower() if plugin_string.find("kdp") >=0: self.connected_over_kdp = True #print "version", self.version, "kernel_stack_size", self.kernel_stack_size, "context_size", self.kernel_context_size self.threads = None # Will be an dictionary containing info for each thread triple = self.process.target.triple arch = triple.split('-')[0].lower() self.target_arch = "" self.kernel_context_size = 0 if arch == archX86_64 : self.target_arch = archX86_64 print "Target arch: x86_64" self.register_set = X86_64RegisterSet() self.kernel_context_size = self._target.FindFirstType('x86_kernel_state').GetByteSize() elif arch in archARMv7_family : self.target_arch = arch print "Target arch: " + self.target_arch self.register_set = Armv7_RegisterSet() self.registers = self.register_set.register_info def create_thread(self, tid, context): th_ptr = context th = self.version.CreateValueFromExpression(str(th_ptr),'(struct thread *)' + str(th_ptr)) thread_id = th.GetChildMemberWithName('thread_id').GetValueAsUnsigned() if tid != thread_id: print "FATAL ERROR: Creating thread from memory 0x%x with tid in mem=%d when requested tid = %d " % (context, thread_id, tid) return None thread_obj = { 'tid' : thread_id, 'ptr' : th.GetValueAsUnsigned(), 'name' : hex(th.GetValueAsUnsigned()).rstrip('L'), 'queue' : hex(th.GetChildMemberWithName('wait_queue').GetValueAsUnsigned()).rstrip('L'), 'state' : 'stopped', 'stop_reason' : 'none' } if self.current_session_id != GetUniqueSessionID(self.process): self.thread_cache = {} self.current_session_id = GetUniqueSessionID(self.process) self.thread_cache[tid] = thread_obj return thread_obj def get_thread_info(self): self.kdp_thread = None self.kdp_state = None if self.connected_over_kdp : kdp = self._target.FindGlobalVariables('kdp',1).GetValueAtIndex(0) kdp_state = kdp.GetChildMemberWithName('saved_state') kdp_thread = kdp.GetChildMemberWithName('kdp_thread') if kdp_thread and kdp_thread.GetValueAsUnsigned() != 0: self.kdp_thread = kdp_thread self.kdp_state = kdp_state kdp_thid = kdp_thread.GetChildMemberWithName('thread_id').GetValueAsUnsigned() self.create_thread(kdp_thid, kdp_thread.GetValueAsUnsigned()) self.thread_cache[kdp_thid]['core']=0 retval = [self.thread_cache[kdp_thid]] return retval else: print "FATAL FAILURE: Unable to find kdp_thread state for this connection." return [] num_threads = self._target.FindGlobalVariables('threads_count',1).GetValueAtIndex(0).GetValueAsUnsigned() #In case we are caught before threads are initialized. Fallback to threads known by astris/gdb server. if num_threads <=0 : return [] self.current_session_id = GetUniqueSessionID(self.process) self.threads = [] self.thread_cache = {} self.processors = [] try: processor_list_val = PluginValue(self._target.FindGlobalVariables('processor_list',1).GetValueAtIndex(0)) while processor_list_val.IsValid() and processor_list_val.GetValueAsUnsigned() !=0 : th = processor_list_val.GetChildMemberWithName('active_thread') th_id = th.GetChildMemberWithName('thread_id').GetValueAsUnsigned() cpu_id = processor_list_val.GetChildMemberWithName('cpu_id').GetValueAsUnsigned() self.processors.append({'active_thread': th.GetValueAsUnsigned(), 'cpu_id': cpu_id}) self.create_thread(th_id, th.GetValueAsUnsigned()) self.thread_cache[th_id]['core'] = cpu_id nth = self.thread_cache[th_id] print "Found 0x%x on logical cpu %d" % ( nth['ptr'], nth['core']) self.threads.append(nth) self.thread_cache[nth['tid']] = nth processor_list_val = processor_list_val.GetChildMemberWithName('processor_list') except KeyboardInterrupt, ke: print "OS Plugin Interrupted during thread loading process. \nWARNING:Thread registers and backtraces may not be accurate." return self.threads if hasattr(self.process, 'CreateOSPluginThread'): return self.threads # FIXME remove legacy code try: thread_q_head = self._target.FindGlobalVariables('threads', 0).GetValueAtIndex(0) thread_type = self._target.FindFirstType('thread') thread_ptr_type = thread_type.GetPointerType() for th in IterateQueue(thread_q_head, thread_ptr_type, 'threads'): th_id = th.GetChildMemberWithName('thread_id').GetValueAsUnsigned() self.create_thread(th_id, th.GetValueAsUnsigned()) nth = self.thread_cache[th_id] for cputhread in self.processors: if cputhread['active_thread'] == nth['ptr']: nth['core'] = cputhread['cpu_id'] #print "Found 0x%x on logical cpu %d" % ( nth['ptr'], cputhread['cpu_id']) self.threads.append( nth ) except KeyboardInterrupt, ke: print "OS Plugin Interrupted during thread loading process. \nWARNING:Thread registers and backtraces may not be accurate." return self.threads # end legacy code return self.threads def get_register_info(self): if self.registers == None: print "Register Information not found " return self.register_set.register_info def get_register_data(self, tid): #print "searching for tid", tid thobj = None try: if self.current_session_id != GetUniqueSessionID(self.process): self.thread_cache = {} self.current_session_id = GetUniqueSessionID(self.process) if tid in self.thread_cache.keys(): thobj = self.version.CreateValueFromExpression(self.thread_cache[tid]['name'], '(struct thread *)' + str(self.thread_cache[tid]['ptr'])) regs = self.register_set if thobj == None : print "FATAL ERROR: Could not find thread with id %d" % tid regs.ResetRegisterValues() return regs.GetPackedRegisterState() if self.kdp_thread and self.kdp_thread.GetValueAsUnsigned() == thobj.GetValueAsUnsigned(): regs.ReadRegisterDataFromKDPSavedState(self.kdp_state, self.version) return regs.GetPackedRegisterState() if int(PluginValue(thobj).GetChildMemberWithName('kernel_stack').GetValueAsUnsigned()) != 0 : if self.target_arch == archX86_64 : # we do have a stack so lets get register information saved_state_addr = PluginValue(thobj).GetChildMemberWithName('kernel_stack').GetValueAsUnsigned() + self.kernel_stack_size - self.kernel_context_size regs.ReadRegisterDataFromKernelStack(saved_state_addr, self.version) return regs.GetPackedRegisterState() elif self.target_arch in archARMv7_family and int(PluginValue(thobj).GetChildMemberWithName('machine').GetChildMemberWithName('kstackptr').GetValueAsUnsigned()) != 0: #we have stack on the machine.kstackptr. saved_state_addr = PluginValue(thobj).GetChildMemberWithName('machine').GetChildMemberWithName('kstackptr').GetValueAsUnsigned() regs.ReadRegisterDataFromKernelStack(saved_state_addr, self.version) return regs.GetPackedRegisterState() elif self.target_arch == archX86_64 or self.target_arch in archARMv7_family: regs.ReadRegisterDataFromContinuation( PluginValue(thobj).GetChildMemberWithName('continuation').GetValueAsUnsigned()) return regs.GetPackedRegisterState() #incase we failed very miserably except KeyboardInterrupt, ke: print "OS Plugin Interrupted during thread register load. \nWARNING:Thread registers and backtraces may not be accurate. for tid = %d" % tid regs.ResetRegisterValues() print "FATAL ERROR: Failed to get register state for thread id 0x%x " % tid print thobj return regs.GetPackedRegisterState() |