Message ID | DB6PR0801MB205372EB7CB30BC3564DE1C083B20@DB6PR0801MB2053.eurprd08.prod.outlook.com |
---|---|
State | New |
Headers | show |
On Jul 31 2017, Wilco Dijkstra <Wilco.Dijkstra@arm.com> wrote: > Add unwind info to __libc_start_main so that unwinding continues one > extra level to _start. > > ChangeLog: > 2017-07-31 Wilco Dijkstra <wdijkstr@arm.com> > > * sysdeps/aarch64/Makefile: Build libc-start.c with -fexceptions. In which way is that specific to aarch64? Why do you need exception support for unwinding (and not just -funwind-tables)? Andreas.
Andreas Schwab wrote: > > * sysdeps/aarch64/Makefile: Build libc-start.c with -fexceptions. > In which way is that specific to aarch64? Why do you need exception > support for unwinding (and not just -funwind-tables)? It probably isn't - I just copied the code from ARM. But we could make backtrace.c and libc-start.c always emit unwind tables on all targets. I suppose -funwind-tables is sufficient in C code. Wilco
diff --git a/sysdeps/aarch64/Makefile b/sysdeps/aarch64/Makefile index 562c1373aebee6ffb4ff5c2071a23d007a8e07ba..81bb01923d18856b609632251a83d93a6e995b46 100644 --- a/sysdeps/aarch64/Makefile +++ b/sysdeps/aarch64/Makefile @@ -11,6 +11,8 @@ endif ifeq ($(subdir),csu) gen-as-const-headers += tlsdesc.sym + +CFLAGS-libc-start.c += -fexceptions endif ifeq ($(subdir),gmon)