| /* Copyright 2011-2012 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| /* Reasons why frames could not be further unwound |
| SET (name, description) |
| |
| After this reason name, all reasons should be considered errors; |
| i.e.: abnormal stack termination. |
| FIRST_ERROR (name) |
| |
| First and Last reason defined |
| FIRST_ENTRY (name) |
| LAST_ENTRY (name) */ |
| |
| #ifdef SET |
| /* No particular reason; either we haven't tried unwinding yet, |
| or we didn't fail. */ |
| SET (UNWIND_NO_REASON, "no reason") |
| |
| /* The previous frame's analyzer returns an invalid result |
| from this_id. |
| |
| FIXME drow/2006-08-16: This is how GDB used to indicate end of |
| stack. We should migrate to a model where frames always have a |
| valid ID, and this becomes not just an error but an internal |
| error. But that's a project for another day. */ |
| SET (UNWIND_NULL_ID, "unwinder did not report frame ID") |
| |
| /* This frame is the outermost. */ |
| SET (UNWIND_OUTERMOST, "outermost") |
| |
| /* Can't unwind further, because that would require knowing the |
| values of registers or memory that haven't been collected. */ |
| SET (UNWIND_UNAVAILABLE, \ |
| "not enough registers or memory available to unwind further") |
| |
| /* This frame ID looks like it ought to belong to a NEXT frame, |
| but we got it for a PREV frame. Normally, this is a sign of |
| unwinder failure. It could also indicate stack corruption. */ |
| SET (UNWIND_INNER_ID, "previous frame inner to this frame (corrupt stack?)") |
| |
| /* This frame has the same ID as the previous one. That means |
| that unwinding further would almost certainly give us another |
| frame with exactly the same ID, so break the chain. Normally, |
| this is a sign of unwinder failure. It could also indicate |
| stack corruption. */ |
| SET (UNWIND_SAME_ID, "previous frame identical to this frame (corrupt stack?)") |
| |
| /* The frame unwinder didn't find any saved PC, but we needed |
| one to unwind further. */ |
| SET (UNWIND_NO_SAVED_PC, "frame did not save the PC") |
| |
| #endif /* SET */ |
| |
| |
| #ifdef FIRST_ERROR |
| FIRST_ERROR (UNWIND_UNAVAILABLE) |
| #endif |
| |
| #ifdef FIRST_ENTRY |
| FIRST_ENTRY (UNWIND_NO_REASON) |
| #endif |
| |
| #ifdef LAST_ENTRY |
| LAST_ENTRY (UNWIND_NO_SAVED_PC) |
| #endif |