2 * Debugger stack handling
4 * Copyright 1995 Alexandre Julliard
5 * Copyright 1996 Eric Youngdale
6 * Copyright 1999 Ove Kåven
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "stackframe.h"
30 #include "wine/debug.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(winedbg
);
36 static IMAGEHLP_STACK_FRAME
* frames
= NULL
;
38 /***********************************************************************
41 * Dump the top of the stack
47 /* FIXME: we assume stack grows the same way as on i386 */
48 if (!memory_get_current_stack(&addr
))
49 dbg_printf("Bad segment (%d)\n", addr
.Segment
);
51 dbg_printf("Stack dump:\n");
54 case AddrModeFlat
: /* 32-bit mode */
55 case AddrMode1632
: /* 32-bit mode */
56 memory_examine(memory_to_linear_addr(&addr
), 24, 'x');
58 case AddrModeReal
: /* 16-bit mode */
60 memory_examine(memory_to_linear_addr(&addr
), 24, 'w');
65 int stack_set_frame(int newframe
)
69 dbg_curr_frame
= newframe
;
70 if (dbg_curr_frame
>= nframe
) dbg_curr_frame
= nframe
- 1;
71 if (dbg_curr_frame
< 0) dbg_curr_frame
= 0;
73 addr
.Mode
= AddrModeFlat
;
74 addr
.Offset
= frames
[dbg_curr_frame
].InstructionOffset
;
75 source_list_from_addr(&addr
, 0);
79 int stack_get_frame(SYMBOL_INFO
* symbol
, IMAGEHLP_STACK_FRAME
* ihsf
)
82 * If we don't have a valid backtrace, then just return.
84 if (frames
== NULL
) return FALSE
;
87 * If we don't know what the current function is, then we also have
88 * nothing to report here.
90 SymFromAddr(dbg_curr_process
->handle
, frames
[dbg_curr_frame
].InstructionOffset
,
92 if (ihsf
) *ihsf
= frames
[dbg_curr_frame
];
97 void stack_backtrace(DWORD tid
, BOOL noisy
)
100 CONTEXT saved_dbg_context
;
101 struct dbg_thread
* thread
;
104 if (tid
== -1) /* backtrace every thread in every process except the debugger itself, invoking via "bt all" */
107 HANDLE snapshot
= CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD
, 0);
109 if (snapshot
== INVALID_HANDLE_VALUE
)
111 dbg_printf("unable to create toolhelp snapshot\n");
115 entry
.dwSize
= sizeof(entry
);
117 if (!Thread32First(snapshot
, &entry
))
119 CloseHandle(snapshot
);
125 if (entry
.th32OwnerProcessID
== GetCurrentProcessId()) continue;
126 if (dbg_curr_process
) dbg_detach_debuggee();
129 if (!dbg_attach_debuggee(entry
.th32OwnerProcessID
, FALSE
, TRUE
))
131 dbg_printf("\nwarning: could not attach to 0x%lx\n", entry
.th32OwnerProcessID
);
135 dbg_printf("Backtracing for thread 0x%lx in process 0x%lx (%s):\n", entry
.th32ThreadID
, dbg_curr_pid
, dbg_curr_process
->imageName
);
137 stack_backtrace(entry
.th32ThreadID
, TRUE
);
139 while (Thread32Next(snapshot
, &entry
));
141 if (dbg_curr_process
) dbg_detach_debuggee();
142 CloseHandle(snapshot
);
146 if (!dbg_curr_process
)
148 dbg_printf("You must be attached to a process to run this command.\n");
152 saved_dbg_context
= dbg_context
; /* as we may modify dbg_context... */
153 if (tid
== dbg_curr_tid
)
155 thread
= dbg_curr_thread
;
156 HeapFree(GetProcessHeap(), 0, frames
);
161 thread
= dbg_get_thread(dbg_curr_process
, tid
);
164 dbg_printf("Unknown thread id (0x%08lx) in current process\n", tid
);
167 memset(&dbg_context
, 0, sizeof(dbg_context
));
168 dbg_context
.ContextFlags
= CONTEXT_FULL
;
169 if (SuspendThread(thread
->handle
) != -1)
171 if (!GetThreadContext(thread
->handle
, &dbg_context
))
173 dbg_printf("Can't get context for thread 0x%lx in current process\n",
175 ResumeThread(thread
->handle
);
181 dbg_printf("Can't suspend thread 0x%lx in current process\n", tid
);
187 memset(&sf
, 0, sizeof(sf
));
188 memory_get_current_frame(&sf
.AddrFrame
);
189 memory_get_current_pc(&sf
.AddrPC
);
191 /* don't confuse StackWalk by passing in inconsistent addresses */
192 if ((sf
.AddrPC
.Mode
== AddrModeFlat
) && (sf
.AddrFrame
.Mode
!= AddrModeFlat
))
194 sf
.AddrFrame
.Offset
= (DWORD
)memory_to_linear_addr(&sf
.AddrFrame
);
195 sf
.AddrFrame
.Mode
= AddrModeFlat
;
198 if (noisy
) dbg_printf("Backtrace:\n");
199 while (StackWalk(IMAGE_FILE_MACHINE_I386
, dbg_curr_process
->handle
,
200 thread
->handle
, &sf
, &dbg_context
, NULL
, SymFunctionTableAccess
,
201 SymGetModuleBase
, NULL
))
203 if (tid
== dbg_curr_tid
)
205 frames
= dbg_heap_realloc(frames
,
206 (nf
+ 1) * sizeof(IMAGEHLP_STACK_FRAME
));
208 frames
[nf
].InstructionOffset
= (unsigned long)memory_to_linear_addr(&sf
.AddrPC
);
209 frames
[nf
].FrameOffset
= (unsigned long)memory_to_linear_addr(&sf
.AddrFrame
);
214 (tid
== dbg_curr_tid
&& nf
== dbg_curr_frame
? "=>" : " "),
216 print_addr_and_args(&sf
.AddrPC
, &sf
.AddrFrame
);
218 print_bare_address(&sf
.AddrFrame
);
222 /* we've probably gotten ourselves into an infinite loop so bail */
227 dbg_context
= saved_dbg_context
;
228 if (tid
== dbg_curr_tid
)
234 ResumeThread(thread
->handle
);