2 * Copyright 2008-2010 Novell, Inc.
3 * Copyright 2011 Xamarin Inc.
5 #ifndef __MONO_MONO_STACK_UNWINDING_H__
6 #define __MONO_MONO_STACK_UNWINDING_H__
8 #include <mono/metadata/appdomain.h>
9 #include <mono/metadata/metadata.h>
10 #include <mono/utils/mono-context.h>
13 * Possible frame types returned by the stack walker.
16 /* Normal managed frames */
17 FRAME_TYPE_MANAGED = 0,
18 /* Pseudo frame marking the start of a method invocation done by the soft debugger */
19 FRAME_TYPE_DEBUGGER_INVOKE = 1,
20 /* Frame for transitioning to native code */
21 FRAME_TYPE_MANAGED_TO_NATIVE = 2,
22 FRAME_TYPE_SENTINEL = 3
26 MONO_UNWIND_NONE = 0x0,
27 MONO_UNWIND_LOOKUP_IL_OFFSET = 0x1,
29 MONO_UNWIND_LOOKUP_ACTUAL_METHOD = 0x2,
31 * Store the locations where caller-saved registers are saved on the stack in
32 * frame->reg_locations. The pointer is only valid during the call to the unwind
35 MONO_UNWIND_REG_LOCATIONS = 0x4,
36 MONO_UNWIND_DEFAULT = MONO_UNWIND_LOOKUP_ACTUAL_METHOD,
37 MONO_UNWIND_SIGNAL_SAFE = MONO_UNWIND_NONE,
38 MONO_UNWIND_LOOKUP_ALL = MONO_UNWIND_LOOKUP_IL_OFFSET | MONO_UNWIND_LOOKUP_ACTUAL_METHOD,
42 MonoStackFrameType type;
44 * For FRAME_TYPE_MANAGED, otherwise NULL.
49 * Not valid if ASYNC_CONTEXT is true.
53 * If ji->method is a gshared method, this is the actual method instance.
54 * This is only filled if lookup for actual method was requested (MONO_UNWIND_LOOKUP_ACTUAL_METHOD)
55 * Not valid if ASYNC_CONTEXT is true.
57 MonoMethod *actual_method;
58 /* The domain containing the code executed by this frame */
62 * Whenever this frame was loaded in async context.
64 gboolean async_context;
67 * IL offset of this frame.
68 * Only available if the runtime have debugging enabled (--debug switch) and
69 * il offset resultion was requested (MONO_UNWIND_LOOKUP_IL_OFFSET)
73 /* The next fields are only useful for the jit */
75 guint32 unwind_info_len;
78 mgreg_t **reg_locations;
81 /*Index into MonoThreadState::unwind_data. */
83 MONO_UNWIND_DATA_DOMAIN,
85 MONO_UNWIND_DATA_JIT_TLS,
89 * This structs holds all information needed to unwind the stack
94 gpointer unwind_data [3]; /*right now: domain, lmf and jit_tls*/
96 } MonoThreadUnwindState;