| /* |
| * Debugger memory handling |
| * |
| * Copyright 1993 Eric Youngdale |
| * Copyright 1995 Alexandre Julliard |
| * Copyright 2000-2005 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 ADDRESS64* addr) |
| { |
| assert(addr->Mode == AddrModeFlat); |
| return (void*)(DWORD_PTR)addr->Offset; |
| } |
| |
| unsigned be_cpu_build_addr(HANDLE hThread, const CONTEXT* ctx, ADDRESS64* 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 ADDRESS64* addr) |
| { |
| return be_cpu->linearize(dbg_curr_thread->handle, addr); |
| } |
| |
| BOOL memory_get_current_pc(ADDRESS64* 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(ADDRESS64* 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(ADDRESS64* addr) |
| { |
| assert(be_cpu->get_addr); |
| return be_cpu->get_addr(dbg_curr_thread->handle, &dbg_context, |
| be_cpu_addr_frame, addr); |
| } |
| |
| static void memory_report_invalid_addr(const void* addr) |
| { |
| ADDRESS64 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) |
| { |
| BOOL ret = FALSE; |
| |
| if (lvalue->cookie == DLV_TARGET) |
| { |
| void* linear = memory_to_linear_addr(&lvalue->addr); |
| if (!(ret = dbg_read_memory(linear, result, size))) |
| memory_report_invalid_addr(linear); |
| } |
| else |
| { |
| if (lvalue->addr.Offset) |
| { |
| memcpy(result, (void*)(DWORD_PTR)lvalue->addr.Offset, size); |
| ret = TRUE; |
| } |
| } |
| return ret; |
| } |
| |
| /*********************************************************************** |
| * memory_write_value |
| * |
| * Store a value in memory. |
| */ |
| BOOL memory_write_value(const struct dbg_lvalue* lvalue, DWORD size, void* value) |
| { |
| BOOL ret = TRUE; |
| DWORD64 os; |
| |
| os = ~(DWORD64)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) |
| { |
| void* linear = memory_to_linear_addr(&lvalue->addr); |
| if (!(ret = dbg_write_memory(linear, value, size))) |
| memory_report_invalid_addr(linear); |
| } |
| else |
| { |
| memcpy((void*)(DWORD_PTR)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]; |
| ADDRESS64 addr; |
| void *linear; |
| |
| types_extract_as_address(lvalue, &addr); |
| 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, 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, 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(linear, &guid, sizeof(guid))) |
| { |
| memory_report_invalid_addr(linear); |
| break; |
| } |
| dbg_printf("{%08x-%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(linear, &_v, sizeof(_t))) \ |
| { memory_report_invalid_addr(linear); 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, " %4.4d"); |
| 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(struct dbg_process* pcs, void* addr, BOOL in_debuggee, |
| BOOL unicode, char* buffer, int size) |
| { |
| SIZE_T sz; |
| WCHAR* buffW; |
| |
| buffer[0] = 0; |
| if (!addr) return FALSE; |
| if (in_debuggee) |
| { |
| BOOL ret; |
| |
| if (!unicode) ret = pcs->process_io->read(pcs->handle, addr, buffer, size, &sz); |
| else |
| { |
| buffW = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR)); |
| ret = pcs->process_io->read(pcs->handle, addr, buffW, size * sizeof(WCHAR), &sz); |
| WideCharToMultiByte(CP_ACP, 0, buffW, sz / sizeof(WCHAR), buffer, size, |
| NULL, NULL); |
| HeapFree(GetProcessHeap(), 0, buffW); |
| } |
| if (size) buffer[size-1] = 0; |
| return ret; |
| } |
| else |
| { |
| lstrcpynA(buffer, addr, size); |
| } |
| return TRUE; |
| } |
| |
| BOOL memory_get_string_indirect(struct dbg_process* pcs, void* addr, BOOL unicode, WCHAR* buffer, int size) |
| { |
| void* ad; |
| SIZE_T sz; |
| |
| buffer[0] = 0; |
| if (addr && |
| pcs->process_io->read(pcs->handle, addr, &ad, sizeof(ad), &sz) && sz == sizeof(ad) && ad) |
| { |
| LPSTR buff; |
| BOOL ret; |
| |
| if (unicode) |
| ret = pcs->process_io->read(pcs->handle, ad, buffer, size * sizeof(WCHAR), &sz) && sz != 0; |
| else |
| { |
| if ((buff = HeapAlloc(GetProcessHeap(), 0, size))) |
| { |
| ret = pcs->process_io->read(pcs->handle, ad, buff, size, &sz) && sz != 0; |
| MultiByteToWideChar(CP_ACP, 0, buff, sz, buffer, size); |
| HeapFree(GetProcessHeap(), 0, buff); |
| } |
| else ret = FALSE; |
| } |
| if (size) buffer[size-1] = 0; |
| return ret; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Convert an address offset to hex string. If mode == 32, treat offset as |
| * 32 bits (discard upper 32 bits), if mode == 64 use all 64 bits, if mode == 0 |
| * treat as either 32 or 64 bits, depending on whether we're running as |
| * Wine32 or Wine64. |
| */ |
| char* memory_offset_to_string(char *str, DWORD64 offset, unsigned mode) |
| { |
| if (mode != 32 && mode != 64) |
| { |
| #ifdef _WIN64 |
| mode = 64; |
| #else |
| mode = 32; |
| #endif |
| } |
| |
| if (mode == 32) |
| sprintf(str, "0x%08x", (unsigned int) offset); |
| else |
| sprintf(str, "0x%08x%08x", (unsigned int)(offset >> 32), |
| (unsigned int)offset); |
| |
| return str; |
| } |
| |
| static void dbg_print_longlong(LONGLONG sv, BOOL is_signed) |
| { |
| char tmp[24], *ptr = tmp + sizeof(tmp) - 1; |
| ULONGLONG uv, div; |
| *ptr = '\0'; |
| if (is_signed && sv < 0) uv = -sv; |
| else { uv = sv; is_signed = FALSE; } |
| for (div = 10; uv; div *= 10, uv /= 10) |
| *--ptr = '0' + (uv % 10); |
| if (ptr == tmp + sizeof(tmp) - 1) *--ptr = '0'; |
| if (is_signed) *--ptr = '-'; |
| dbg_printf("%s", ptr); |
| } |
| |
| static void print_typed_basic(const struct dbg_lvalue* lvalue) |
| { |
| LONGLONG val_int; |
| void* val_ptr; |
| long double val_real; |
| DWORD64 size64; |
| DWORD tag, size, count, bt; |
| struct dbg_type type = lvalue->type; |
| struct dbg_type sub_type; |
| |
| if (!types_get_real_type(&type, &tag)) return; |
| |
| switch (tag) |
| { |
| case SymTagBaseType: |
| if (!types_get_info(&type, TI_GET_LENGTH, &size64) || |
| !types_get_info(&type, TI_GET_BASETYPE, &bt)) |
| { |
| WINE_ERR("Couldn't get information\n"); |
| RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL); |
| } |
| size = (DWORD)size64; |
| switch (bt) |
| { |
| case btInt: |
| case btLong: |
| if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return; |
| if (size == 1) goto print_char; |
| dbg_print_longlong(val_int, TRUE); |
| break; |
| case btUInt: |
| case btULong: |
| if (!be_cpu->fetch_integer(lvalue, size, FALSE, &val_int)) return; |
| dbg_print_longlong(val_int, FALSE); |
| 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) */ |
| print_char: |
| if (size == 1 && (val_int < 0x20 || val_int > 0x80)) |
| dbg_printf("%d", (int)val_int); |
| else |
| dbg_printf("'%c'", (char)val_int); |
| break; |
| case btBool: |
| if (!be_cpu->fetch_integer(lvalue, size, TRUE, &val_int)) return; |
| dbg_printf("%s", val_int ? "true" : "false"); |
| break; |
| default: |
| WINE_FIXME("Unsupported basetype %u\n", bt); |
| break; |
| } |
| break; |
| case SymTagPointerType: |
| if (!memory_read_value(lvalue, sizeof(void*), &val_ptr)) return; |
| |
| sub_type.module = lvalue->type.module; |
| if (!types_get_info(&type, TI_GET_TYPE, &sub_type.id) || |
| sub_type.id == dbg_itype_none) |
| { |
| dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr); |
| break; |
| } |
| if (!types_get_real_type(&sub_type, &tag)) return; |
| |
| if (types_get_info(&sub_type, TI_GET_SYMTAG, &tag) && tag == SymTagBaseType && |
| types_get_info(&sub_type, TI_GET_BASETYPE, &bt) && (bt == btChar || bt == btInt) && |
| types_get_info(&sub_type, TI_GET_LENGTH, &size64) && size64 == 1) |
| { |
| char buffer[1024]; |
| |
| if (!val_ptr) dbg_printf("0x0"); |
| else if (memory_get_string(dbg_curr_process, val_ptr, |
| lvalue->cookie == DLV_TARGET, |
| size64 == 2, buffer, sizeof(buffer))) |
| dbg_printf("\"%s\"", buffer); |
| else |
| dbg_printf("*** invalid address %p ***", val_ptr); |
| } |
| else dbg_printf("%p", val_ptr); |
| break; |
| case SymTagArrayType: |
| case SymTagUDT: |
| if (!memory_read_value(lvalue, sizeof(val_ptr), &val_ptr)) return; |
| dbg_printf("%p", val_ptr); |
| break; |
| case SymTagEnum: |
| { |
| BOOL ok = FALSE; |
| |
| /* 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(&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; |
| |
| fcp->Start = 0; |
| while (count) |
| { |
| fcp->Count = min(count, 256); |
| if (types_get_info(&type, TI_FINDCHILDREN, fcp)) |
| { |
| sub_type.module = type.module; |
| for (i = 0; i < min(fcp->Count, count); i++) |
| { |
| sub_type.id = fcp->ChildId[i]; |
| if (!types_get_info(&sub_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(&sub_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_print_longlong(val_int, TRUE); |
| } |
| break; |
| default: |
| WINE_FIXME("Unsupported tag %u\n", tag); |
| break; |
| } |
| } |
| |
| /*********************************************************************** |
| * print_basic |
| * |
| * Implementation of the 'print' command. |
| */ |
| void print_basic(const struct dbg_lvalue* lvalue, char format) |
| { |
| if (lvalue->type.id == dbg_itype_none) |
| { |
| dbg_printf("Unable to evaluate expression\n"); |
| return; |
| } |
| |
| if (format != 0) |
| { |
| unsigned size; |
| LONGLONG res = types_extract_as_longlong(lvalue, &size); |
| DWORD hi; |
| WCHAR wch; |
| |
| /* FIXME: this implies i386 byte ordering */ |
| switch (format) |
| { |
| case 'x': |
| hi = (ULONG64)res >> 32; |
| if (size == 8 && hi) |
| dbg_printf("0x%x%08x", hi, (DWORD)res); |
| else |
| dbg_printf("0x%x", (DWORD)res); |
| return; |
| |
| case 'd': |
| dbg_print_longlong(res, TRUE); |
| dbg_printf("\n"); |
| return; |
| |
| case 'c': |
| dbg_printf("%d = '%c'", (char)(res & 0xff), (char)(res & 0xff)); |
| return; |
| |
| case 'u': |
| wch = (WCHAR)(res & 0xFFFF); |
| dbg_printf("%d = '", wch); |
| dbg_outputW(&wch, 1); |
| dbg_printf("'"); |
| return; |
| |
| case 'i': |
| case 's': |
| case 'w': |
| case 'b': |
| dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format); |
| } |
| } |
| if (lvalue->type.id == dbg_itype_segptr) |
| { |
| dbg_print_longlong(types_extract_as_longlong(lvalue, NULL), TRUE); |
| dbg_printf("\n"); |
| } |
| else print_typed_basic(lvalue); |
| } |
| |
| void print_bare_address(const ADDRESS64* addr) |
| { |
| char hexbuf[MAX_OFFSET_TO_STR_LEN]; |
| |
| switch (addr->Mode) |
| { |
| case AddrModeFlat: |
| dbg_printf("%s", memory_offset_to_string(hexbuf, addr->Offset, 0)); |
| break; |
| case AddrModeReal: |
| case AddrMode1616: |
| dbg_printf("0x%04x:0x%04x", addr->Segment, (unsigned) addr->Offset); |
| break; |
| case AddrMode1632: |
| dbg_printf("0x%04x:%s", addr->Segment, |
| memory_offset_to_string(hexbuf, addr->Offset, 32)); |
| 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 ADDRESS64* 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:%u]", il.FileName, il.LineNumber); |
| im.SizeOfStruct = sizeof(im); |
| if (SymGetModuleInfo(dbg_curr_process->handle, (DWORD_PTR)lin, &im)) |
| dbg_printf(" in %s", im.ModuleName); |
| } |
| } |
| |
| BOOL memory_disasm_one_insn(ADDRESS64* 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 ADDRESS64 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) |
| types_extract_as_address(xstart, &last); |
| 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); |
| } |
| |
| BOOL memory_get_register(DWORD regno, DWORD** value, char* buffer, int len) |
| { |
| const struct dbg_internal_var* div; |
| |
| /* negative register values are wine's dbghelp hacks |
| * see dlls/dbghelp/dbghelp_internal.h for the details |
| */ |
| switch (regno) |
| { |
| case -1: |
| if (buffer) snprintf(buffer, len, "<internal error>"); |
| return FALSE; |
| case -2: |
| if (buffer) snprintf(buffer, len, "<couldn't compute location>"); |
| return FALSE; |
| case -3: |
| if (buffer) snprintf(buffer, len, "<is not available>"); |
| return FALSE; |
| case -4: |
| if (buffer) snprintf(buffer, len, "<couldn't read memory>"); |
| return FALSE; |
| } |
| |
| for (div = dbg_context_vars; div->name; div++) |
| { |
| if (div->val == regno) |
| { |
| if (dbg_curr_thread->curr_frame != 0) |
| { |
| if (!stack_get_register_current_frame(regno, value)) |
| { |
| if (buffer) snprintf(buffer, len, "<register %s not in topmost frame>", div->name); |
| return FALSE; |
| } |
| } |
| else |
| *value = div->pval; |
| |
| if (buffer) lstrcpynA(buffer, div->name, len); |
| return TRUE; |
| } |
| } |
| if (buffer) snprintf(buffer, len, "<unknown register %u>", regno); |
| return FALSE; |
| } |
