Reserve a bit in function info byte in the SFrame FDE to designate
signal frames.
Also update the SFrame opt code in GAS and dumping routines in libsframe
to handle signal frame bit.
include/
* sframe.h (SFRAME_V3_FDE_SIGNAL_P): Extract signal frame bit.
(SFRAME_V3_FDE_UPDATE_SIGNAL_P): Set signal frame bit.
gas/
* gen-sframe.c (get_dw_fde_signal_p): New function to retrieve signal
frame state from DWARF FDE.
(sframe_v3_set_func_info): Renamed from sframe_v1_set_func_info.
Accept signal_p argument and encode it.
(sframe_set_version): Update ops to use sframe_v3_set_func_info.
(sframe_set_func_info): Pass signal_p to the ops hook.
(output_sframe_funcdesc): Retrieve signal frame marker and pass to
sframe_set_func_info.
* gen-sframe.h (struct sframe_version_ops): Update set_func_info
signature.
* sframe-opt.c (sframe_convert_frag): Preserve signal_p bit during
fragment conversion. While at it, use SFRAME_V3_* macros where
applicable.
libsframe/testsuite/
* gas/cfi-sframe/cfi-sframe-common-13.d: New test.
* gas/cfi-sframe/cfi-sframe-common-13.s: New test.
* gas/cfi-sframe/cfi-sframe.exp: Run new test.
libsframe/
* sframe-dump.c (dump_sframe_func_with_fres): Decode signal frame bit
and print "S" attribute in the dump output.
0bdf18b8a5