glibc/sysdeps/s390/s390-32
Stefan Liebler 1301097665 S390: Remove backchain-based fallback and use generic backtrace.c.
After recent discussions:
- "[PATCH] s390: Remove backchain-based fallback from backtrace"
  https://www.sourceware.org/ml/libc-alpha/2020-02/msg00287.html

- "Re: [PATCH 07/11] s390: Implement backtrace on top of <unwind-link.h>"
  https://www.sourceware.org/ml/libc-alpha/2020-02/msg00637.html

We've checked and decided to remove the backchain:
We don't know of any environments without libgcc. Thus the backchain
unwinder is not used. If somebody builds with -mbackchain and without
fasynchronous-unwind-tables and has libgcc installed, then the
libgcc unwinder is called but not the backchain-based fallback.

This step allows to get rid of the s390x specific backtrace.c files at all.
Furthermore the now used debug/backtrace.c version has some more
advantages:
- Free all resources if necessary. (libc_freeres_fn)
- Remove NULL address above _start.
- Check whether we make any progress while getting addresses.
2020-03-05 12:52:19 +01:00
..
bits Refactor long double information into bits/long-double.h. 2016-12-14 18:27:56 +00:00
__longjmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
add_n.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
addmul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
bsd-_setjmp.S Move sysdeps/s390/s390-32/elf files 2012-03-28 09:31:13 +02:00
bsd-setjmp.S Move sysdeps/s390/s390-32/elf files 2012-03-28 09:31:13 +02:00
crti.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
crtn.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-machine.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-sysdep.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-trampoline.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dl-trampoline.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Implies Update. 2004-07-01 17:50:47 +00:00
Makefile S390: Use fPIC to avoid R_390_GOT12 relocation in gcrt1.o. 2016-05-11 15:51:25 +02:00
mul_1.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
s390-mcount.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
setjmp.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stackguard-macros.h S390: Use __asm__ instead of asm. 2015-11-20 08:56:40 +01:00
start.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncpy-z900.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sub_n.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
symbol-hacks.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sysdep.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
tls-macros.h S390: Save and restore r12 in TLS_IE macro. 2017-06-27 15:23:43 +02:00
tst-audit.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
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