| /* | |
| * Debugger memory handling | |
| * | |
| * Copyright 1993 Eric Youngdale | |
| * Copyright 1995 Alexandre Julliard | |
| * Copyright 2000-2004 Eric Pouech | |
| * | |
| * This library is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * This library is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with this library; if not, write to the Free Software | |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| */ | |
| #include "config.h" | |
| #include "wine/port.h" | |
| #include <stdlib.h> | |
| #include <string.h> | |
| #include <stdio.h> | |
| #include "debugger.h" | |
| #include "wine/debug.h" | |
| WINE_DEFAULT_DEBUG_CHANNEL(winedbg); | |
| void* be_cpu_linearize(HANDLE hThread, const ADDRESS* addr) | |
| { | |
| assert(addr->Mode == AddrModeFlat); | |
| return (void*)addr->Offset; | |
| } | |
| unsigned be_cpu_build_addr(HANDLE hThread, const CONTEXT* ctx, ADDRESS* addr, | |
| unsigned seg, unsigned long offset) | |
| { | |
| addr->Mode = AddrModeFlat; | |
| addr->Segment = 0; /* don't need segment */ | |
| addr->Offset = offset; | |
| return TRUE; | |
| } | |
| void* memory_to_linear_addr(const ADDRESS* addr) | |
| { | |
| return be_cpu->linearize(dbg_curr_thread->handle, addr); | |
| } | |
| BOOL memory_get_current_pc(ADDRESS* addr) | |
| { | |
| assert(be_cpu->get_addr); | |
| return be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context, | |
| be_cpu_addr_pc, addr); | |
| } | |
| BOOL memory_get_current_stack(ADDRESS* addr) | |
| { | |
| assert(be_cpu->get_addr); | |
| return be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context, | |
| be_cpu_addr_stack, addr); | |
| } | |
| BOOL memory_get_current_frame(ADDRESS* addr) | |
| { | |
| assert(be_cpu->get_addr); | |
| return be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context, | |
| be_cpu_addr_frame, addr); | |
| } | |
| void memory_report_invalid_addr(const void* addr) | |
| { | |
| ADDRESS address; | |
| address.Mode = AddrModeFlat; | |
| address.Segment = 0; | |
| address.Offset = (unsigned long)addr; | |
| dbg_printf("*** Invalid address "); | |
| print_address(&address, FALSE); | |
| dbg_printf("\n"); | |
| } | |
| /*********************************************************************** | |
| * memory_read_value | |
| * | |
| * Read a memory value. | |
| */ | |
| BOOL memory_read_value(const struct dbg_lvalue* lvalue, DWORD size, void* result) | |
| { | |
| if (lvalue->cookie == DLV_TARGET) | |
| { | |
| if (!dbg_read_memory_verbose(memory_to_linear_addr(&lvalue->addr), result, size)) | |
| return FALSE; | |
| } | |
| else | |
| { | |
| if (!lvalue->addr.Offset) return FALSE; | |
| memcpy(result, (void*)lvalue->addr.Offset, size); | |
| } | |
| return TRUE; | |
| } | |
| /*********************************************************************** | |
| * memory_write_value | |
| * | |
| * Store a value in memory. | |
| */ | |
| BOOL memory_write_value(const struct dbg_lvalue* lvalue, DWORD size, void* value) | |
| { | |
| BOOL ret = TRUE; | |
| DWORD os; | |
| DWORD linear = (DWORD)memory_to_linear_addr(&lvalue->addr); | |
| os = ~size; | |
| types_get_info(&lvalue->type, TI_GET_LENGTH, &os); | |
| assert(size == os); | |
| /* FIXME: only works on little endian systems */ | |
| if (lvalue->cookie == DLV_TARGET) | |
| { | |
| ret = dbg_write_memory_verbose((void*)linear, value, size); | |
| } | |
| else | |
| { | |
| memcpy((void*)lvalue->addr.Offset, value, size); | |
| } | |
| return ret; | |
| } | |
| /*********************************************************************** | |
| * memory_examine | |
| * | |
| * Implementation of the 'x' command. | |
| */ | |
| void memory_examine(const struct dbg_lvalue *lvalue, int count, char format) | |
| { | |
| int i; | |
| char buffer[256]; | |
| ADDRESS addr; | |
| void *linear; | |
| if (lvalue->type.id == dbg_itype_none) addr = lvalue->addr; | |
| else | |
| { | |
| addr.Mode = AddrModeFlat; | |
| addr.Offset = types_extract_as_integer( lvalue ); | |
| } | |
| linear = memory_to_linear_addr( &addr ); | |
| if (format != 'i' && count > 1) | |
| { | |
| print_address(&addr, FALSE); | |
| dbg_printf(": "); | |
| } | |
| switch (format) | |
| { | |
| case 'u': | |
| if (count == 1) count = 256; | |
| memory_get_string(dbg_curr_process->handle, linear, | |
| TRUE, TRUE, buffer, min(count, sizeof(buffer))); | |
| dbg_printf("%s\n", buffer); | |
| return; | |
| case 's': | |
| if (count == 1) count = 256; | |
| memory_get_string(dbg_curr_process->handle, linear, | |
| TRUE, FALSE, buffer, min(count, sizeof(buffer))); | |
| dbg_printf("%s\n", buffer); | |
| return; | |
| case 'i': | |
| while (count-- && memory_disasm_one_insn(&addr)); | |
| return; | |
| case 'g': | |
| while (count--) | |
| { | |
| GUID guid; | |
| if (!dbg_read_memory_verbose(linear, &guid, sizeof(guid))) break; | |
| dbg_printf("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n", | |
| guid.Data1, guid.Data2, guid.Data3, | |
| guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3], | |
| guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]); | |
| linear = (char*)linear + sizeof(guid); | |
| addr.Offset += sizeof(guid); | |
| if (count) | |
| { | |
| print_address(&addr, FALSE); | |
| dbg_printf(": "); | |
| } | |
| } | |
| return; | |
| #define DO_DUMP2(_t,_l,_f,_vv) { \ | |
| _t _v; \ | |
| for (i = 0; i < count; i++) { \ | |
| if (!dbg_read_memory_verbose(linear, &_v, \ | |
| sizeof(_t))) break; \ | |
| dbg_printf(_f, (_vv)); \ | |
| addr.Offset += sizeof(_t); \ | |
| linear = (char*)linear + sizeof(_t); \ | |
| if ((i % (_l)) == (_l) - 1 && i != count - 1) \ | |
| { \ | |
| dbg_printf("\n"); \ | |
| print_address(&addr, FALSE); \ | |
| dbg_printf(": "); \ | |
| } \ | |
| } \ | |
| dbg_printf("\n"); \ | |
| } \ | |
| return | |
| #define DO_DUMP(_t,_l,_f) DO_DUMP2(_t,_l,_f,_v) | |
| case 'x': DO_DUMP(int, 4, " %8.8x"); | |
| case 'd': DO_DUMP(unsigned int, 4, " %10d"); | |
| case 'w': DO_DUMP(unsigned short, 8, " %04x"); | |
| case 'c': DO_DUMP2(char, 32, " %c", (_v < 0x20) ? ' ' : _v); | |
| case 'b': DO_DUMP2(char, 16, " %02x", (_v) & 0xff); | |
| } | |
| } | |
| BOOL memory_get_string(HANDLE hp, void* addr, BOOL in_debuggee, BOOL unicode, | |
| char* buffer, int size) | |
| { | |
| DWORD sz; | |
| WCHAR* buffW; | |
| buffer[0] = 0; | |
| if (!addr) return FALSE; | |
| if (in_debuggee) | |
| { | |
| if (!unicode) return ReadProcessMemory(hp, addr, buffer, size, &sz); | |
| buffW = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR)); | |
| ReadProcessMemory(hp, addr, buffW, size * sizeof(WCHAR), &sz); | |
| WideCharToMultiByte(CP_ACP, 0, buffW, sz / sizeof(WCHAR), buffer, size, | |
| NULL, NULL); | |
| HeapFree(GetProcessHeap(), 0, buffW); | |
| } | |
| else | |
| { | |
| strncpy(buffer, addr, size); | |
| buffer[size - 1] = 0; | |
| } | |
| return TRUE; | |
| } | |
| BOOL memory_get_string_indirect(HANDLE hp, void* addr, BOOL unicode, char* buffer, int size) | |
| { | |
| void* ad; | |
| DWORD sz; | |
| buffer[0] = 0; | |
| if (addr && | |
| ReadProcessMemory(hp, addr, &ad, sizeof(ad), &sz) && sz == sizeof(ad) && ad) | |
| { | |
| return memory_get_string(hp, ad, TRUE, unicode, buffer, size); | |
| } | |
| return FALSE; | |
| } | |
| static void print_typed_basic(const struct dbg_lvalue* lvalue) | |
| { | |
| long long int val_int; | |
| void* val_ptr; | |
| long double val_real; | |
| DWORD tag, size, count, bt; | |
| struct dbg_type rtype; | |
| if (lvalue->type.id == dbg_itype_none || | |
| !types_get_info(&lvalue->type, TI_GET_SYMTAG, &tag)) | |
| return; | |
| switch (tag) | |
| { | |
| case SymTagBaseType: | |
| if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &size) || | |
| !types_get_info(&lvalue->type, TI_GET_BASETYPE, &bt)) | |
| { | |
| WINE_ERR("Couldn't get information\n"); | |
| RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL); | |
| } | |
| switch (bt) | |
| { | |
| case btInt: | |
| if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return; | |
| dbg_printf("%lld", val_int); | |
| break; | |
| case btUInt: | |
| if (!be_cpu->fetch_integer(lvalue, size, FALSE, &val_int)) return; | |
| dbg_printf("%llu", val_int); | |
| break; | |
| case btFloat: | |
| if (!be_cpu->fetch_float(lvalue, size, &val_real)) return; | |
| dbg_printf("%Lf", val_real); | |
| break; | |
| case btChar: | |
| if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return; | |
| /* FIXME: should do the same for a Unicode character (size == 2) */ | |
| if (size == 1 && (val_int < 0x20 || val_int > 0x80)) | |
| dbg_printf("%d", (int)val_int); | |
| else | |
| dbg_printf("'%c'", (char)val_int); | |
| break; | |
| default: | |
| WINE_FIXME("Unsupported basetype %lu\n", bt); | |
| break; | |
| } | |
| break; | |
| case SymTagPointerType: | |
| if (!memory_read_value(lvalue, sizeof(void*), &val_ptr)) return; | |
| if (!types_get_info(&lvalue->type, TI_GET_TYPE, &rtype.id) || | |
| rtype.id == dbg_itype_none) | |
| { | |
| dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr); | |
| break; | |
| } | |
| rtype.module = lvalue->type.module; | |
| if (types_get_info(&rtype, TI_GET_SYMTAG, &tag) && tag == SymTagBaseType && | |
| types_get_info(&rtype, TI_GET_BASETYPE, &bt) && bt == btChar && | |
| types_get_info(&rtype, TI_GET_LENGTH, &size)) | |
| { | |
| char buffer[1024]; | |
| memory_get_string(dbg_curr_process->handle, val_ptr, | |
| lvalue->cookie == DLV_TARGET, | |
| size == 2, buffer, sizeof(buffer)); | |
| dbg_printf("\"%s\"", buffer); | |
| } | |
| else dbg_printf("%p", val_ptr); | |
| break; | |
| case SymTagArrayType: | |
| case SymTagUDT: | |
| assert(lvalue->cookie == DLV_TARGET); | |
| if (!memory_read_value(lvalue, sizeof(val_ptr), &val_ptr)) return; | |
| dbg_printf("%p", val_ptr); | |
| break; | |
| case SymTagEnum: | |
| { | |
| BOOL ok = FALSE; | |
| assert(lvalue->cookie == DLV_TARGET); | |
| /* FIXME: it depends on underlying type for enums | |
| * (not supported yet in dbghelp) | |
| * Assuming 4 as for an int | |
| */ | |
| if (!be_cpu->fetch_integer(lvalue, 4, TRUE, &val_int)) return; | |
| if (types_get_info(&lvalue->type, TI_GET_CHILDRENCOUNT, &count)) | |
| { | |
| char buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)]; | |
| TI_FINDCHILDREN_PARAMS* fcp = (TI_FINDCHILDREN_PARAMS*)buffer; | |
| WCHAR* ptr; | |
| char tmp[256]; | |
| VARIANT variant; | |
| int i; | |
| struct dbg_type type; | |
| fcp->Start = 0; | |
| while (count) | |
| { | |
| fcp->Count = min(count, 256); | |
| if (types_get_info(&lvalue->type, TI_FINDCHILDREN, fcp)) | |
| { | |
| type.module = lvalue->type.module; | |
| for (i = 0; i < min(fcp->Count, count); i++) | |
| { | |
| type.id = fcp->ChildId[i]; | |
| if (!types_get_info(&type, TI_GET_VALUE, &variant)) | |
| continue; | |
| switch (variant.n1.n2.vt) | |
| { | |
| case VT_I4: ok = (val_int == variant.n1.n2.n3.lVal); break; | |
| default: WINE_FIXME("Unsupported variant type (%u)\n", variant.n1.n2.vt); | |
| } | |
| if (ok) | |
| { | |
| ptr = NULL; | |
| types_get_info(&type, TI_GET_SYMNAME, &ptr); | |
| if (!ptr) continue; | |
| WideCharToMultiByte(CP_ACP, 0, ptr, -1, tmp, sizeof(tmp), NULL, NULL); | |
| HeapFree(GetProcessHeap(), 0, ptr); | |
| dbg_printf("%s", tmp); | |
| count = 0; /* so that we'll get away from outter loop */ | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| count -= min(count, 256); | |
| fcp->Start += 256; | |
| } | |
| if (!ok) dbg_printf("%lld", val_int); | |
| } | |
| break; | |
| default: | |
| WINE_FIXME("Unsupported tag %lu\n", tag); | |
| break; | |
| } | |
| } | |
| /*********************************************************************** | |
| * print_basic | |
| * | |
| * Implementation of the 'print' command. | |
| */ | |
| void print_basic(const struct dbg_lvalue* lvalue, int count, char format) | |
| { | |
| long int res; | |
| if (lvalue->type.id == dbg_itype_none) | |
| { | |
| dbg_printf("Unable to evaluate expression\n"); | |
| return; | |
| } | |
| res = types_extract_as_integer(lvalue); | |
| /* FIXME: this implies i386 byte ordering */ | |
| switch (format) | |
| { | |
| case 'x': | |
| if (lvalue->addr.Mode != AddrModeFlat) | |
| dbg_printf("0x%04lx", res); | |
| else | |
| dbg_printf("0x%08lx", res); | |
| break; | |
| case 'd': | |
| dbg_printf("%ld\n", res); | |
| break; | |
| case 'c': | |
| dbg_printf("%d = '%c'", (char)(res & 0xff), (char)(res & 0xff)); | |
| break; | |
| case 'u': | |
| { | |
| WCHAR wch = (WCHAR)(res & 0xFFFF); | |
| dbg_printf("%d = '", wch); | |
| dbg_outputW(&wch, 1); | |
| dbg_printf("'"); | |
| } | |
| break; | |
| case 'i': | |
| case 's': | |
| case 'w': | |
| case 'b': | |
| dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format); | |
| case 0: | |
| print_typed_basic(lvalue); | |
| break; | |
| } | |
| } | |
| void print_bare_address(const ADDRESS* addr) | |
| { | |
| switch (addr->Mode) | |
| { | |
| case AddrModeFlat: | |
| dbg_printf("0x%08lx", addr->Offset); | |
| break; | |
| case AddrModeReal: | |
| case AddrMode1616: | |
| dbg_printf("0x%04x:0x%04lx", addr->Segment, addr->Offset); | |
| break; | |
| case AddrMode1632: | |
| dbg_printf("0x%04x:0x%08lx", addr->Segment, addr->Offset); | |
| break; | |
| default: | |
| dbg_printf("Unknown mode %x\n", addr->Mode); | |
| break; | |
| } | |
| } | |
| /*********************************************************************** | |
| * print_address | |
| * | |
| * Print an 16- or 32-bit address, with the nearest symbol if any. | |
| */ | |
| void print_address(const ADDRESS* addr, BOOLEAN with_line) | |
| { | |
| char buffer[sizeof(SYMBOL_INFO) + 256]; | |
| SYMBOL_INFO* si = (SYMBOL_INFO*)buffer; | |
| void* lin = memory_to_linear_addr(addr); | |
| DWORD64 disp64; | |
| DWORD disp; | |
| print_bare_address(addr); | |
| si->SizeOfStruct = sizeof(*si); | |
| si->MaxNameLen = 256; | |
| if (!SymFromAddr(dbg_curr_process->handle, (DWORD_PTR)lin, &disp64, si)) return; | |
| dbg_printf(" %s", si->Name); | |
| if (disp64) dbg_printf("+0x%lx", (DWORD_PTR)disp64); | |
| if (with_line) | |
| { | |
| IMAGEHLP_LINE il; | |
| IMAGEHLP_MODULE im; | |
| il.SizeOfStruct = sizeof(il); | |
| if (SymGetLineFromAddr(dbg_curr_process->handle, (DWORD_PTR)lin, &disp, &il)) | |
| dbg_printf(" [%s:%lu]", il.FileName, il.LineNumber); | |
| im.SizeOfStruct = sizeof(im); | |
| if (SymGetModuleInfo(dbg_curr_process->handle, (DWORD_PTR)lin, &im)) | |
| dbg_printf(" in %s", im.ModuleName); | |
| } | |
| } | |
| struct sym_enum | |
| { | |
| char* tmp; | |
| DWORD frame; | |
| }; | |
| static BOOL WINAPI sym_enum_cb(SYMBOL_INFO* sym_info, ULONG size, void* user) | |
| { | |
| struct sym_enum* se = (struct sym_enum*)user; | |
| DWORD addr; | |
| unsigned val; | |
| long offset; | |
| if ((sym_info->Flags & (SYMFLAG_PARAMETER|SYMFLAG_FRAMEREL)) == (SYMFLAG_PARAMETER|SYMFLAG_FRAMEREL)) | |
| { | |
| struct dbg_type type; | |
| if (se->tmp[0]) strcat(se->tmp, ", "); | |
| addr = se->frame; | |
| type.module = sym_info->ModBase; | |
| type.id = sym_info->TypeIndex; | |
| types_get_info(&type, TI_GET_OFFSET, &offset); | |
| addr += offset; | |
| dbg_read_memory_verbose((char*)addr, &val, sizeof(val)); | |
| sprintf(se->tmp + strlen(se->tmp), "%s=0x%x", sym_info->Name, val); | |
| } | |
| return TRUE; | |
| } | |
| void print_addr_and_args(const ADDRESS* pc, const ADDRESS* frame) | |
| { | |
| char buffer[sizeof(SYMBOL_INFO) + 256]; | |
| SYMBOL_INFO* si = (SYMBOL_INFO*)buffer; | |
| IMAGEHLP_STACK_FRAME isf; | |
| IMAGEHLP_LINE il; | |
| IMAGEHLP_MODULE im; | |
| DWORD64 disp64; | |
| print_bare_address(pc); | |
| isf.InstructionOffset = (DWORD_PTR)memory_to_linear_addr(pc); | |
| isf.FrameOffset = (DWORD_PTR)memory_to_linear_addr(frame); | |
| /* grab module where symbol is. If we don't have a module, we cannot print more */ | |
| im.SizeOfStruct = sizeof(im); | |
| if (!SymGetModuleInfo(dbg_curr_process->handle, isf.InstructionOffset, &im)) | |
| return; | |
| si->SizeOfStruct = sizeof(*si); | |
| si->MaxNameLen = 256; | |
| if (SymFromAddr(dbg_curr_process->handle, isf.InstructionOffset, &disp64, si)) | |
| { | |
| struct sym_enum se; | |
| char tmp[1024]; | |
| DWORD disp; | |
| dbg_printf(" %s", si->Name); | |
| if (disp) dbg_printf("+0x%lx", (DWORD_PTR)disp64); | |
| SymSetContext(dbg_curr_process->handle, &isf, NULL); | |
| se.tmp = tmp; | |
| se.frame = isf.FrameOffset; | |
| tmp[0] = '\0'; | |
| SymEnumSymbols(dbg_curr_process->handle, 0, NULL, sym_enum_cb, &se); | |
| if (tmp[0]) dbg_printf("(%s)", tmp); | |
| il.SizeOfStruct = sizeof(il); | |
| if (SymGetLineFromAddr(dbg_curr_process->handle, isf.InstructionOffset, | |
| &disp, &il)) | |
| dbg_printf(" [%s:%lu]", il.FileName, il.LineNumber); | |
| dbg_printf(" in %s", im.ModuleName); | |
| } | |
| else dbg_printf(" in %s (+0x%lx)", | |
| im.ModuleName, (DWORD_PTR)(isf.InstructionOffset - im.BaseOfImage)); | |
| } | |
| BOOL memory_disasm_one_insn(ADDRESS* addr) | |
| { | |
| char ch; | |
| print_address(addr, TRUE); | |
| dbg_printf(": "); | |
| if (!dbg_read_memory(memory_to_linear_addr(addr), &ch, sizeof(ch))) | |
| { | |
| dbg_printf("-- no code accessible --\n"); | |
| return FALSE; | |
| } | |
| be_cpu->disasm_one_insn(addr, TRUE); | |
| dbg_printf("\n"); | |
| return TRUE; | |
| } | |
| void memory_disassemble(const struct dbg_lvalue* xstart, | |
| const struct dbg_lvalue* xend, int instruction_count) | |
| { | |
| static ADDRESS last = {0,0,0}; | |
| int stop = 0; | |
| int i; | |
| if (!xstart && !xend) | |
| { | |
| if (!last.Segment && !last.Offset) memory_get_current_pc(&last); | |
| } | |
| else | |
| { | |
| if (xstart) | |
| { | |
| last.Mode = AddrModeFlat; | |
| last.Offset = types_extract_as_integer(xstart); | |
| } | |
| if (xend) | |
| stop = types_extract_as_integer(xend); | |
| } | |
| for (i = 0; (instruction_count == 0 || i < instruction_count) && | |
| (stop == 0 || last.Offset <= stop); i++) | |
| memory_disasm_one_insn(&last); | |
| } |