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gcc/libgcc/config
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Raphael Moreira Zinsly b7561b5d24 libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC 
Without dwarf2 unwind tables available _Unwind_Backtrace() is not
able to return the full backtrace.
This patch adds a fallback function on powerpc to get the backtrace
by doing a backchain, this code was originally at glibc.

libgcc/ChangeLog:

	* config/rs6000/linux-unwind.h (struct rt_sigframe): Move it to
	outside of get_regs() in order to use it in another function, this
	is done twice: for __powerpc64__ and for !__powerpc64__.
	(struct trace_arg): New struct.
	(struct layout): New struct.
	(ppc_backchain_fallback): New function.
	* unwind.inc (_Unwind_Backtrace): Look for _URC_NORMAL_STOP code
	state and call MD_BACKCHAIN_FALLBACK.

gcc/testsuite/ChangeLog:

	* gcc.target/powerpc/unwind-backchain.c: New test.
2021-10-14 20:00:44 +00:00
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libgcc: Add missing runtime exception notices
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arm: add erratum mitigation to __gnu_cmse_nonsecure_call [PR102035]
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Remove m32r{,le}-*-linux* support from GCC
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or1k: Use cmodel=large when building crtstuff
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pa
libgcc: Add missing runtime exception notices
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pdp11
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pru
libgcc: pru: Place mpyll into its own section
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RISC-V: Update soft-fp config for big-endian
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rs6000
libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC
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no-sfp-machine.h
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libgcc, X86, Darwin: Handle symbols for HF cases.
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libgcc: Honor LDFLAGS_FOR_TARGET when linking libgcc_s
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libgcc, Darwin: Remove unused symlinks.
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libgcc: Honor LDFLAGS_FOR_TARGET when linking libgcc_s
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Fix the vxworks crtstuff handling of kernel/rtp variations
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introduce overridable clear_cache emitter
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introduce overridable clear_cache emitter
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