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Raphael Moreira Zinsly 8d71d3a317 libgcc: Fix backtrace fallback on PowerPC Big-endian 
At the end of the backtrace stream _Unwind_Find_FDE() may not be able
to find the frame unwind info and will later call the backtrace fallback
instead of finishing. This occurs when using an old libc on ppc64 due to
dl_iterate_phdr() not being able to set the fde in the last trace.
When this occurs the cfa of the trace will be behind of context's cfa.
Also, libgo’s probestackmaps() calls the backtrace with a null pointer
and can get to the backchain fallback with the same problem, in this case
we are only interested in find a stack map, we don't need nor can do a
backchain.
_Unwind_ForcedUnwind_Phase2() can hit the same issue as it uses
uw_frame_state_for(), so we need to treat _URC_NORMAL_STOP.

libgcc/ChangeLog:
	PR libgcc/103044
	* config/rs6000/linux-unwind.h (ppc_backchain_fallback): Check if it's
	called with a null argument or at the end of the backtrace and return.
	* unwind.inc (_Unwind_ForcedUnwind_Phase2): Treat _URC_NORMAL_STOP.
 		2021-11-11 15:29:25 +00:00
..
config libgcc: Fix backtrace fallback on PowerPC Big-endian 2021-11-11 15:29:25 +00:00
soft-fp Update hf soft-fp from glibc. 2021-09-02 14:11:53 +08:00
ChangeLog Daily bump. 2021-11-11 00:16:28 +00:00
Makefile.in Explicitly add -msse2 to compile HF related libgcc source file. 2021-09-06 15:13:14 +08:00
config.host Support TI mode and soft float on PA64 2021-11-05 16:07:35 +00:00
config.in gcov: use mmap pools for KVP. 2021-03-03 14:21:45 +01:00
configure rs6000: Fix typos in float128 ISA3.1 support 2021-06-22 23:09:30 -05:00
configure.ac rs6000: Fix typos in float128 ISA3.1 support 2021-06-22 23:09:30 -05:00
crtstuff.c Update copyright years. 2021-01-04 10:26:59 +01:00
dfp-bit.c Fix a comment line that was too long. 2021-02-22 15:54:39 -05:00
dfp-bit.h Require GLIBC 2.32 for Decimal/_Float128 conversions. 2021-03-29 16:43:14 -04:00
divmod.c Update copyright years. 2021-01-04 10:26:59 +01:00
emutls.c Update copyright years. 2021-01-04 10:26:59 +01:00
enable-execute-stack-empty.c enable-execute-stack-empty.c (__enable_execute_stack): Add prototype. 2011-06-22 13:20:07 +02:00
enable-execute-stack-mprotect.c Update copyright years. 2021-01-04 10:26:59 +01:00
find-symver.awk Update copyright years. 2021-01-04 10:26:59 +01:00
fixed-bit.c Update copyright years. 2021-01-04 10:26:59 +01:00
fixed-bit.h Update copyright years. 2021-01-04 10:26:59 +01:00
fixed-obj.mk Makefile.in (fixed-funcs,fixed-conv-funcs): filter-out LIB2FUNCS_EXCLUDE before adding them to libgcc-objects, libgcc-s-objects. 2012-08-23 15:41:03 +00:00
floatunsidf.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
floatunsisf.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
floatunsitf.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
floatunsixf.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
fp-bit.c Update copyright years. 2021-01-04 10:26:59 +01:00
fp-bit.h Update copyright years. 2021-01-04 10:26:59 +01:00
gbl-ctors.h Update copyright years. 2021-01-04 10:26:59 +01:00
gcov.h gcov: Add __gcov_info_to_gdca() 2021-08-06 07:28:26 +02:00
gen-fixed.sh
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generic-morestack-thread.c Update copyright years. 2021-01-04 10:26:59 +01:00
generic-morestack.c Update copyright years. 2021-01-04 10:26:59 +01:00
generic-morestack.h Update copyright years. 2021-01-04 10:26:59 +01:00
gstdint.h
…
gthr-posix.h Update copyright years. 2021-01-04 10:26:59 +01:00
gthr-single.h Update copyright years. 2021-01-04 10:26:59 +01:00
gthr.h Update copyright years. 2021-01-04 10:26:59 +01:00
libgcc-std.ver.in Update copyright years. 2021-01-04 10:26:59 +01:00
libgcc2.c Fix for powerpc64 long double complex divide failure 2021-10-03 18:07:06 -04:00
libgcc2.h Update copyright years. 2021-01-04 10:26:59 +01:00
libgcov-driver-system.c Update copyright years. 2021-01-04 10:26:59 +01:00
libgcov-driver.c gcov: make profile merging smarter 2021-10-13 15:26:58 +02:00
libgcov-interface.c Update copyright years. 2021-01-04 10:26:59 +01:00
libgcov-merge.c Restore profile reproducibility. 2021-01-25 13:30:34 +01:00
libgcov-profiler.c Update copyright years. 2021-01-04 10:26:59 +01:00
libgcov-util.c gcov: make profile merging smarter 2021-10-13 15:26:58 +02:00
libgcov.h gcov: make profile merging smarter 2021-10-13 15:26:58 +02:00
memcmp.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
memcpy.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
memmove.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
memset.c Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
mkheader.sh Update copyright years. 2021-01-04 10:26:59 +01:00
mkmap-flat.awk Update copyright years. 2021-01-04 10:26:59 +01:00
mkmap-symver.awk Update copyright years. 2021-01-04 10:26:59 +01:00
offloadstuff.c Update copyright years. 2021-01-04 10:26:59 +01:00
shared-object.mk Add the nvptx port. 2014-11-10 16:12:42 +00:00
siditi-object.mk Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
static-object.mk Add the nvptx port. 2014-11-10 16:12:42 +00:00
sync.c Update copyright years. 2021-01-04 10:26:59 +01:00
udivhi3.c Update copyright years. 2021-01-04 10:26:59 +01:00
udivmod.c Update copyright years. 2021-01-04 10:26:59 +01:00
udivmodhi4.c Update copyright years. 2021-01-04 10:26:59 +01:00
udivmodsi4.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-arm-common.inc Fix arm target build with inhibit_libc 2021-09-01 17:50:00 +02:00
unwind-c.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-compat.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-compat.h Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2-fde-compat.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2-fde-dip.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2-fde.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2-fde.h Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-dw2.h Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-generic.h Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-pe.h Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-seh.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind-sjlj.c Update copyright years. 2021-01-04 10:26:59 +01:00
unwind.inc libgcc: Fix backtrace fallback on PowerPC Big-endian 2021-11-11 15:29:25 +00:00
vtv_end.c Update copyright years. 2021-01-04 10:26:59 +01:00
vtv_end_preinit.c Update copyright years. 2021-01-04 10:26:59 +01:00
vtv_start.c Update copyright years. 2021-01-04 10:26:59 +01:00
vtv_start_preinit.c Update copyright years. 2021-01-04 10:26:59 +01:00