Re: [PATCH v3] libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC

2021-10-06 Thread Segher Boessenkool
On Wed, Oct 06, 2021 at 10:09:31AM -0300, Raphael M Zinsly wrote: > On 05/10/2021 19:03, Segher Boessenkool wrote: > >So what is new or different in v3 compared to v2? > > gcc/testsuite/gcc.target/powerpc/unwind-backchain.c: > - Added a comment explaining why test only on *-linux targets. >

Re: [PATCH v3] libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC

2021-10-06 Thread Raphael M Zinsly via Gcc-patches
On 05/10/2021 19:03, Segher Boessenkool wrote: On Tue, Oct 05, 2021 at 03:32:52PM -0300, Raphael Moreira Zinsly wrote: 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

Re: [PATCH v3] libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC

2021-10-05 Thread Segher Boessenkool
On Tue, Oct 05, 2021 at 03:32:52PM -0300, Raphael Moreira Zinsly wrote: > 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

[PATCH v3] libgcc: Add a backchain fallback to _Unwind_Backtrace() on PowerPC

2021-10-05 Thread Raphael Moreira Zinsly via Gcc-patches
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_sig