diff options
Diffstat (limited to 'src/third_party/unwind/dist/src/ia64/Gis_signal_frame.c')
-rw-r--r-- | src/third_party/unwind/dist/src/ia64/Gis_signal_frame.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/ia64/Gis_signal_frame.c b/src/third_party/unwind/dist/src/ia64/Gis_signal_frame.c new file mode 100644 index 00000000000..e268a062998 --- /dev/null +++ b/src/third_party/unwind/dist/src/ia64/Gis_signal_frame.c @@ -0,0 +1,54 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2001-2002 Hewlett-Packard Co + Contributed by David Mosberger-Tang <davidm@hpl.hp.com> + +This file is part of libunwind. + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ + +#include "unwind_i.h" + +int +unw_is_signal_frame (unw_cursor_t *cursor) +{ + struct cursor *c = (struct cursor *) cursor; + struct ia64_state_record sr; + int ret; + + /* Crude and slow, but we need to peek ahead into the unwind + descriptors to find out if the current IP is inside the signal + trampoline. */ + ret = ia64_fetch_proc_info (c, c->ip, 1); + if (ret < 0) + return ret; + + ret = ia64_create_state_record (c, &sr); + if (ret < 0) + return ret; + + /* For now, we assume that any non-zero abi marker implies a signal frame. + This should get us pretty far. */ + ret = (sr.abi_marker != 0); + + ia64_free_state_record (&sr); + + Debug (1, "(cursor=%p, ip=0x%016lx) -> %d\n", c, c->ip, ret); + return ret; +} |