1 /* 2 * Stack walking 3 * 4 * Copyright 1995 Alexandre Julliard 5 * Copyright 1996 Eric Youngdale 6 * Copyright 1999 Ove Kåven 7 * Copyright 2004 Eric Pouech 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 22 */ 23 24 #include "config.h" 25 #include <stdlib.h> 26 #include <stdio.h> 27 #include <string.h> 28 #include <assert.h> 29 30 #include "dbghelp_private.h" 31 #include "wine/debug.h" 32 33 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp); 34 35 static DWORD64 WINAPI addr_to_linear(HANDLE hProcess, HANDLE hThread, ADDRESS64* addr) 36 { 37 LDT_ENTRY le; 38 39 switch (addr->Mode) 40 { 41 case AddrMode1616: 42 if (GetThreadSelectorEntry(hThread, addr->Segment, &le)) 43 return (le.HighWord.Bits.BaseHi << 24) + 44 (le.HighWord.Bits.BaseMid << 16) + le.BaseLow + LOWORD(addr->Offset); 45 break; 46 case AddrMode1632: 47 if (GetThreadSelectorEntry(hThread, addr->Segment, &le)) 48 return (le.HighWord.Bits.BaseHi << 24) + 49 (le.HighWord.Bits.BaseMid << 16) + le.BaseLow + addr->Offset; 50 break; 51 case AddrModeReal: 52 return (DWORD)(LOWORD(addr->Segment) << 4) + addr->Offset; 53 case AddrModeFlat: 54 return addr->Offset; 55 default: 56 FIXME("Unsupported (yet) mode (%x)\n", addr->Mode); 57 return 0; 58 } 59 FIXME("Failed to linearize address %04x:%s (mode %x)\n", 60 addr->Segment, wine_dbgstr_longlong(addr->Offset), addr->Mode); 61 return 0; 62 } 63 64 static BOOL CALLBACK read_mem(HANDLE hProcess, DWORD addr, void* buffer, 65 DWORD size, LPDWORD nread) 66 { 67 SIZE_T r; 68 if (!ReadProcessMemory(hProcess, (void*)(DWORD_PTR)addr, buffer, size, &r)) return FALSE; 69 if (nread) *nread = r; 70 return TRUE; 71 } 72 73 static BOOL CALLBACK read_mem64(HANDLE hProcess, DWORD64 addr, void* buffer, 74 DWORD size, LPDWORD nread) 75 { 76 SIZE_T r; 77 if (!ReadProcessMemory(hProcess, (void*)(DWORD_PTR)addr, buffer, size, &r)) return FALSE; 78 if (nread) *nread = r; 79 return TRUE; 80 } 81 82 static inline void addr_32to64(const ADDRESS* addr32, ADDRESS64* addr64) 83 { 84 addr64->Offset = (ULONG64)addr32->Offset; 85 addr64->Segment = addr32->Segment; 86 addr64->Mode = addr32->Mode; 87 } 88 89 static inline void addr_64to32(const ADDRESS64* addr64, ADDRESS* addr32) 90 { 91 addr32->Offset = (ULONG)addr64->Offset; 92 addr32->Segment = addr64->Segment; 93 addr32->Mode = addr64->Mode; 94 } 95 96 BOOL sw_read_mem(struct cpu_stack_walk* csw, DWORD64 addr, void* ptr, DWORD sz) 97 { 98 DWORD bytes_read = 0; 99 if (csw->is32) 100 return csw->u.s32.f_read_mem(csw->hProcess, addr, ptr, sz, &bytes_read); 101 else 102 return csw->u.s64.f_read_mem(csw->hProcess, addr, ptr, sz, &bytes_read); 103 } 104 105 DWORD64 sw_xlat_addr(struct cpu_stack_walk* csw, ADDRESS64* addr) 106 { 107 if (addr->Mode == AddrModeFlat) return addr->Offset; 108 if (csw->is32) 109 { 110 ADDRESS addr32; 111 112 addr_64to32(addr, &addr32); 113 return csw->u.s32.f_xlat_adr(csw->hProcess, csw->hThread, &addr32); 114 } 115 else if (csw->u.s64.f_xlat_adr) 116 return csw->u.s64.f_xlat_adr(csw->hProcess, csw->hThread, addr); 117 return addr_to_linear(csw->hProcess, csw->hThread, addr); 118 } 119 120 void* sw_table_access(struct cpu_stack_walk* csw, DWORD64 addr) 121 { 122 if (csw->is32) 123 return csw->u.s32.f_tabl_acs(csw->hProcess, addr); 124 else 125 return csw->u.s64.f_tabl_acs(csw->hProcess, addr); 126 } 127 128 DWORD64 sw_module_base(struct cpu_stack_walk* csw, DWORD64 addr) 129 { 130 if (csw->is32) 131 return csw->u.s32.f_modl_bas(csw->hProcess, addr); 132 else 133 return csw->u.s64.f_modl_bas(csw->hProcess, addr); 134 } 135 136 /*********************************************************************** 137 * StackWalk (DBGHELP.@) 138 */ 139 BOOL WINAPI StackWalk(DWORD MachineType, HANDLE hProcess, HANDLE hThread, 140 LPSTACKFRAME frame32, PVOID ctx, 141 PREAD_PROCESS_MEMORY_ROUTINE f_read_mem, 142 PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine, 143 PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine, 144 PTRANSLATE_ADDRESS_ROUTINE f_xlat_adr) 145 { 146 struct cpu_stack_walk csw; 147 STACKFRAME64 frame64; 148 BOOL ret; 149 struct cpu* cpu; 150 151 TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n", 152 MachineType, hProcess, hThread, frame32, ctx, 153 f_read_mem, FunctionTableAccessRoutine, 154 GetModuleBaseRoutine, f_xlat_adr); 155 156 if (!(cpu = cpu_find(MachineType))) 157 { 158 SetLastError(ERROR_INVALID_PARAMETER); 159 return FALSE; 160 } 161 162 addr_32to64(&frame32->AddrPC, &frame64.AddrPC); 163 addr_32to64(&frame32->AddrReturn, &frame64.AddrReturn); 164 addr_32to64(&frame32->AddrFrame, &frame64.AddrFrame); 165 addr_32to64(&frame32->AddrStack, &frame64.AddrStack); 166 addr_32to64(&frame32->AddrBStore, &frame64.AddrBStore); 167 frame64.FuncTableEntry = frame32->FuncTableEntry; /* FIXME */ 168 frame64.Far = frame32->Far; 169 frame64.Virtual = frame32->Virtual; 170 frame64.Reserved[0] = frame32->Reserved[0]; 171 frame64.Reserved[1] = frame32->Reserved[1]; 172 frame64.Reserved[2] = frame32->Reserved[2]; 173 /* we don't handle KdHelp */ 174 175 csw.hProcess = hProcess; 176 csw.hThread = hThread; 177 csw.is32 = TRUE; 178 /* sigh... MS isn't even consistent in the func prototypes */ 179 csw.u.s32.f_read_mem = (f_read_mem) ? f_read_mem : read_mem; 180 csw.u.s32.f_xlat_adr = f_xlat_adr; 181 csw.u.s32.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess; 182 csw.u.s32.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase; 183 184 if ((ret = cpu->stack_walk(&csw, &frame64, ctx))) 185 { 186 addr_64to32(&frame64.AddrPC, &frame32->AddrPC); 187 addr_64to32(&frame64.AddrReturn, &frame32->AddrReturn); 188 addr_64to32(&frame64.AddrFrame, &frame32->AddrFrame); 189 addr_64to32(&frame64.AddrStack, &frame32->AddrStack); 190 addr_64to32(&frame64.AddrBStore, &frame32->AddrBStore); 191 frame32->FuncTableEntry = frame64.FuncTableEntry; /* FIXME */ 192 frame32->Params[0] = frame64.Params[0]; 193 frame32->Params[1] = frame64.Params[1]; 194 frame32->Params[2] = frame64.Params[2]; 195 frame32->Params[3] = frame64.Params[3]; 196 frame32->Far = frame64.Far; 197 frame32->Virtual = frame64.Virtual; 198 frame32->Reserved[0] = frame64.Reserved[0]; 199 frame32->Reserved[1] = frame64.Reserved[1]; 200 frame32->Reserved[2] = frame64.Reserved[2]; 201 } 202 203 return ret; 204 } 205 206 207 /*********************************************************************** 208 * StackWalk64 (DBGHELP.@) 209 */ 210 BOOL WINAPI StackWalk64(DWORD MachineType, HANDLE hProcess, HANDLE hThread, 211 LPSTACKFRAME64 frame, PVOID ctx, 212 PREAD_PROCESS_MEMORY_ROUTINE64 f_read_mem, 213 PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine, 214 PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine, 215 PTRANSLATE_ADDRESS_ROUTINE64 f_xlat_adr) 216 { 217 struct cpu_stack_walk csw; 218 struct cpu* cpu; 219 220 TRACE("(%d, %p, %p, %p, %p, %p, %p, %p, %p)\n", 221 MachineType, hProcess, hThread, frame, ctx, 222 f_read_mem, FunctionTableAccessRoutine, 223 GetModuleBaseRoutine, f_xlat_adr); 224 225 if (!(cpu = cpu_find(MachineType))) 226 { 227 SetLastError(ERROR_INVALID_PARAMETER); 228 return FALSE; 229 } 230 231 csw.hProcess = hProcess; 232 csw.hThread = hThread; 233 csw.is32 = FALSE; 234 /* sigh... MS isn't even consistent in the func prototypes */ 235 csw.u.s64.f_read_mem = (f_read_mem) ? f_read_mem : read_mem64; 236 csw.u.s64.f_xlat_adr = (f_xlat_adr) ? f_xlat_adr : addr_to_linear; 237 csw.u.s64.f_tabl_acs = (FunctionTableAccessRoutine) ? FunctionTableAccessRoutine : SymFunctionTableAccess64; 238 csw.u.s64.f_modl_bas = (GetModuleBaseRoutine) ? GetModuleBaseRoutine : SymGetModuleBase64; 239 240 if (!cpu->stack_walk(&csw, frame, ctx)) return FALSE; 241 242 /* we don't handle KdHelp */ 243 244 return TRUE; 245 } 246 247 /****************************************************************** 248 * SymRegisterFunctionEntryCallback (DBGHELP.@) 249 * 250 * 251 */ 252 BOOL WINAPI SymRegisterFunctionEntryCallback(HANDLE hProc, 253 PSYMBOL_FUNCENTRY_CALLBACK cb, PVOID user) 254 { 255 FIXME("(%p %p %p): stub!\n", hProc, cb, user); 256 SetLastError(ERROR_CALL_NOT_IMPLEMENTED); 257 return FALSE; 258 } 259 260 /****************************************************************** 261 * SymRegisterFunctionEntryCallback64 (DBGHELP.@) 262 * 263 * 264 */ 265 BOOL WINAPI SymRegisterFunctionEntryCallback64(HANDLE hProc, 266 PSYMBOL_FUNCENTRY_CALLBACK64 cb, 267 ULONG64 user) 268 { 269 FIXME("(%p %p %s): stub!\n", hProc, cb, wine_dbgstr_longlong(user)); 270 SetLastError(ERROR_CALL_NOT_IMPLEMENTED); 271 return FALSE; 272 } 273