diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/libgcc-std.ver | 1 | ||||
| -rw-r--r-- | gcc/unwind.h | 8 | ||||
| -rw-r--r-- | gcc/unwind.inc | 36 |
4 files changed, 51 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e2750ace4e5..44572507ddf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-04-15 Ulrich Weigand <uweigand@de.ibm.com> + + * unwind.inc (_Unwind_Backtrace): New function. + * unwind.h (_Unwind_Backtrace): Declare it. + * libgcc-std.ver (_Unwind_Backtrace): Export it. + 2003-04-14 Jason Merrill <jason@redhat.com> PR middle-end/10336, c++/10401 diff --git a/gcc/libgcc-std.ver b/gcc/libgcc-std.ver index 00c72c0c4af..c8a1a8b83c9 100644 --- a/gcc/libgcc-std.ver +++ b/gcc/libgcc-std.ver @@ -180,6 +180,7 @@ GCC_3.0 { GCC_3.3 { _Unwind_FindEnclosingFunction _Unwind_GetCFA + _Unwind_Backtrace } %inherit GCC_3.4 GCC_3.3 diff --git a/gcc/unwind.h b/gcc/unwind.h index 084eebfa875..8f7a499330e 100644 --- a/gcc/unwind.h +++ b/gcc/unwind.h @@ -127,6 +127,14 @@ extern void _Unwind_DeleteException (struct _Unwind_Exception *); e.g. executing cleanup code, and not to implement rethrowing. */ extern void _Unwind_Resume (struct _Unwind_Exception *); +/* @@@ Use unwind data to perform a stack backtrace. The trace callback + is called for every stack frame in the call chain, but no cleanup + actions are performed. */ +typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) + (struct _Unwind_Context *, void *); + +extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *); + /* These functions are used for communicating information about the unwind context (i.e. the unwind descriptors and the user register state) between the unwind library and the personality routine and landing pad. Only diff --git a/gcc/unwind.inc b/gcc/unwind.inc index 0422cb81a03..225b046d37f 100644 --- a/gcc/unwind.inc +++ b/gcc/unwind.inc @@ -239,3 +239,39 @@ _Unwind_DeleteException (struct _Unwind_Exception *exc) { (*exc->exception_cleanup) (_URC_FOREIGN_EXCEPTION_CAUGHT, exc); } + + +/* Perform stack backtrace through unwind data. */ + +_Unwind_Reason_Code +_Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument) +{ + struct _Unwind_Context context; + _Unwind_Reason_Code code; + + uw_init_context (&context); + + while (1) + { + _Unwind_FrameState fs; + + /* Set up fs to describe the FDE for the caller of context. */ + code = uw_frame_state_for (&context, &fs); + if (code != _URC_NO_REASON && code != _URC_END_OF_STACK) + return _URC_FATAL_PHASE1_ERROR; + + /* Call trace function. */ + if ((*trace) (&context, trace_argument) != _URC_NO_REASON) + return _URC_FATAL_PHASE1_ERROR; + + /* We're done at end of stack. */ + if (code == _URC_END_OF_STACK) + break; + + /* Update context to describe the same frame as fs. */ + uw_update_context (&context, &fs); + } + + return code; +} + |