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Joseph Myers ffec7b2740 Use x86_64 backtrace as generic version. 
No glibc configuration uses the present debug/backtrace.c, whereas
several #include the x86_64 version.  The x86_64 version is
effectively a generic one (using _Unwind_Backtrace from libgcc, which
works much more reliably than the built-in functions used by
debug/backtrace.c).  This patch moves it to debug/backtrace.c and
removes all the #includes of the x86_64 version from other
architectures which are no longer required.

I do not know whether all the other architecture-specific backtrace
implementations that are based on _Unwind_Backtrace are required, or
whether, where their differences from the generic version do something
useful, suitable hooks could be added to the generic version to reduce
the duplication involved.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.

	* sysdeps/x86_64/backtrace.c: Move to ....
	* debug/backtrace.c: ... here.
	* sysdeps/aarch64/backtrace.c: Remove file.
	* sysdeps/alpha/backtrace.c: Likewise.
	* sysdeps/hppa/backtrace.c: Likewise.
	* sysdeps/ia64/backtrace.c: Likewise.
	* sysdeps/mips/backtrace.c: Likewise.
	* sysdeps/nios2/backtrace.c: Likewise.
	* sysdeps/riscv/backtrace.c: Likewise.
	* sysdeps/sh/backtrace.c: Likewise.
	* sysdeps/tile/backtrace.c: Likewise.
 		2018-03-21 17:25:30 +00:00
..
alphaev5 Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
alphaev6 Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
alphaev67 Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bits Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
fpu Remove all target specific __ieee754_sqrt(f/l) inlines 2018-03-15 19:21:36 +00:00
nptl hurd: add gscope support 2018-03-11 13:06:33 +01:00
soft-fp Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Implies Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
Makefile Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
Subdirs Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
Versions Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
__longjmp.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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atomic-machine.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
bsd-_setjmp.S Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
bsd-setjmp.S Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
bzero.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
configure Require autoconf 2.69 2014-09-29 07:53:36 -07:00
configure.ac Require autoconf 2.69 2014-09-29 07:53:36 -07:00
crti.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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div.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
div_libc.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
divl.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
divlu.S Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
divq.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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dl-dtprocnum.h Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
dl-machine.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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dl-sysdep.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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ffsll.S Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
hp-timing.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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libc-tls.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
lldiv.S Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
lshift.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memchr.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memset.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
memusage.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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nscd-types.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
preconfigure Remove relro configure test. 2014-06-27 16:51:22 +00:00
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reml.S Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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tininess.h Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
tls-macros.h Relocate alpha from ports to libc 2014-02-12 07:00:06 -08:00
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