| /* |
| * Debugger stack handling |
| * |
| * Copyright 1995 Alexandre Julliard |
| * Copyright 1996 Eric Youngdale |
| * Copyright 1999 Ove Kåven |
| * |
| * 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 <stdlib.h> |
| #include <stdio.h> |
| |
| #include "debugger.h" |
| #include "winbase.h" |
| #include "wine/winbase16.h" |
| #include "wine/debug.h" |
| #include "tlhelp32.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(winedbg); |
| |
| static int nframe; |
| static IMAGEHLP_STACK_FRAME* frames = NULL; |
| |
| /*********************************************************************** |
| * stack_info |
| * |
| * Dump the top of the stack |
| */ |
| void stack_info(void) |
| { |
| struct dbg_lvalue lvalue; |
| |
| lvalue.cookie = 0; |
| lvalue.type.id = dbg_itype_none; |
| lvalue.type.module = 0; |
| |
| /* FIXME: we assume stack grows the same way as on i386 */ |
| if (!memory_get_current_stack(&lvalue.addr)) |
| dbg_printf("Bad segment (%d)\n", lvalue.addr.Segment); |
| |
| dbg_printf("Stack dump:\n"); |
| switch (lvalue.addr.Mode) |
| { |
| case AddrModeFlat: /* 32-bit mode */ |
| case AddrMode1632: /* 32-bit mode */ |
| memory_examine(&lvalue, 24, 'x'); |
| break; |
| case AddrModeReal: /* 16-bit mode */ |
| case AddrMode1616: |
| memory_examine(&lvalue, 24, 'w'); |
| break; |
| } |
| } |
| |
| int stack_set_frame(int newframe) |
| { |
| ADDRESS addr; |
| |
| dbg_curr_frame = newframe; |
| if (dbg_curr_frame >= nframe) dbg_curr_frame = nframe - 1; |
| if (dbg_curr_frame < 0) dbg_curr_frame = 0; |
| |
| addr.Mode = AddrModeFlat; |
| addr.Offset = frames[dbg_curr_frame].InstructionOffset; |
| source_list_from_addr(&addr, 0); |
| return TRUE; |
| } |
| |
| BOOL stack_get_frame(SYMBOL_INFO* symbol, IMAGEHLP_STACK_FRAME* ihsf) |
| { |
| DWORD64 disp; |
| /* |
| * If we don't have a valid backtrace, then just return. |
| */ |
| if (frames == NULL) return FALSE; |
| |
| /* |
| * If we don't know what the current function is, then we also have |
| * nothing to report here. |
| */ |
| if (!SymFromAddr(dbg_curr_process->handle, frames[dbg_curr_frame].InstructionOffset, |
| &disp, symbol)) |
| return FALSE; |
| if (ihsf) *ihsf = frames[dbg_curr_frame]; |
| |
| return TRUE; |
| } |
| |
| /****************************************************************** |
| * backtrace |
| * |
| * Do a backtrace on the the current thread |
| */ |
| static unsigned backtrace(BOOL with_frames, BOOL noisy) |
| { |
| STACKFRAME sf; |
| unsigned nf = 0; |
| |
| memset(&sf, 0, sizeof(sf)); |
| memory_get_current_frame(&sf.AddrFrame); |
| memory_get_current_pc(&sf.AddrPC); |
| |
| /* don't confuse StackWalk by passing in inconsistent addresses */ |
| if ((sf.AddrPC.Mode == AddrModeFlat) && (sf.AddrFrame.Mode != AddrModeFlat)) |
| { |
| sf.AddrFrame.Offset = (DWORD)memory_to_linear_addr(&sf.AddrFrame); |
| sf.AddrFrame.Mode = AddrModeFlat; |
| } |
| |
| if (noisy) dbg_printf("Backtrace:\n"); |
| while (StackWalk(IMAGE_FILE_MACHINE_I386, dbg_curr_process->handle, |
| dbg_curr_thread->handle, &sf, &dbg_context, NULL, |
| SymFunctionTableAccess, SymGetModuleBase, NULL)) |
| { |
| if (with_frames) |
| { |
| frames = dbg_heap_realloc(frames, |
| (nf + 1) * sizeof(IMAGEHLP_STACK_FRAME)); |
| |
| frames[nf].InstructionOffset = (unsigned long)memory_to_linear_addr(&sf.AddrPC); |
| frames[nf].FrameOffset = (unsigned long)memory_to_linear_addr(&sf.AddrFrame); |
| } |
| if (noisy) |
| { |
| dbg_printf("%s%d ", |
| (with_frames && nf == dbg_curr_frame ? "=>" : " "), |
| nf + 1); |
| print_addr_and_args(&sf.AddrPC, &sf.AddrFrame); |
| dbg_printf(" ("); |
| print_bare_address(&sf.AddrFrame); |
| dbg_printf(")\n"); |
| } |
| nf++; |
| /* we've probably gotten ourselves into an infinite loop so bail */ |
| if (nf > 200) |
| break; |
| } |
| return nf; |
| } |
| |
| /****************************************************************** |
| * backtrace_tid |
| * |
| * Do a backtrace on a thread from its process and its identifier |
| * (preserves current thread and context information) |
| */ |
| static void backtrace_tid(struct dbg_process* pcs, DWORD tid, BOOL noisy) |
| { |
| struct dbg_thread* thread = dbg_curr_thread; |
| |
| if (!(dbg_curr_thread = dbg_get_thread(pcs, tid))) |
| dbg_printf("Unknown thread id (0x%lx) in process (0x%lx)\n", tid, pcs->pid); |
| else |
| { |
| CONTEXT saved_ctx = dbg_context; |
| |
| dbg_curr_tid = dbg_curr_thread->tid; |
| memset(&dbg_context, 0, sizeof(dbg_context)); |
| dbg_context.ContextFlags = CONTEXT_FULL; |
| if (SuspendThread(dbg_curr_thread->handle) != -1) |
| { |
| if (!GetThreadContext(dbg_curr_thread->handle, &dbg_context)) |
| { |
| dbg_printf("Can't get context for thread 0x%lx in current process\n", |
| tid); |
| } |
| else backtrace(FALSE, noisy); |
| ResumeThread(dbg_curr_thread->handle); |
| } |
| else dbg_printf("Can't suspend thread 0x%lx in current process\n", tid); |
| dbg_context = saved_ctx; |
| } |
| dbg_curr_thread = thread; |
| dbg_curr_tid = thread ? thread->tid : 0; |
| } |
| |
| /****************************************************************** |
| * backtrace_all |
| * |
| * Do a backtrace on every running thread in the system (except the debugger) |
| * (preserves current process information) |
| */ |
| static void backtrace_all(void) |
| { |
| THREADENTRY32 entry; |
| HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0); |
| |
| if (snapshot == INVALID_HANDLE_VALUE) |
| { |
| dbg_printf("Unable to create toolhelp snapshot\n"); |
| return; |
| } |
| |
| entry.dwSize = sizeof(entry); |
| if (Thread32First(snapshot, &entry)) |
| { |
| do |
| { |
| if (entry.th32OwnerProcessID == GetCurrentProcessId()) continue; |
| if (dbg_curr_process && dbg_curr_pid != entry.th32OwnerProcessID) |
| dbg_detach_debuggee(); |
| |
| if (entry.th32OwnerProcessID != dbg_curr_pid) |
| { |
| if (!dbg_attach_debuggee(entry.th32OwnerProcessID, FALSE, TRUE)) |
| { |
| dbg_printf("\nwarning: could not attach to 0x%lx\n", |
| entry.th32OwnerProcessID); |
| continue; |
| } |
| dbg_curr_pid = dbg_curr_process->pid; |
| } |
| |
| dbg_printf("\nBacktracing for thread 0x%lx in process 0x%lx (%s):\n", |
| entry.th32ThreadID, dbg_curr_pid, dbg_curr_process->imageName); |
| backtrace_tid(dbg_curr_process, entry.th32ThreadID, TRUE); |
| } |
| while (Thread32Next(snapshot, &entry)); |
| |
| if (dbg_curr_process) |
| dbg_detach_debuggee(); |
| } |
| CloseHandle(snapshot); |
| } |
| |
| void stack_backtrace(DWORD tid, BOOL noisy) |
| { |
| /* backtrace every thread in every process except the debugger itself, |
| * invoking via "bt all" |
| */ |
| if (tid == -1) return backtrace_all(); |
| |
| if (!dbg_curr_process) |
| { |
| dbg_printf("You must be attached to a process to run this command.\n"); |
| return; |
| } |
| |
| if (tid == dbg_curr_tid) |
| { |
| HeapFree(GetProcessHeap(), 0, frames); |
| frames = NULL; |
| nframe = backtrace(TRUE, noisy); |
| } |
| else |
| { |
| backtrace_tid(dbg_curr_process, tid, noisy); |
| } |
| } |
