From c4e5f34bf0d818be747edf9a30e4152953cc6706 Mon Sep 17 00:00:00 2001 From: Mao Han Date: Mon, 11 Mar 2019 09:51:14 +0800 Subject: C-SKY: mark lr as undefined to stop unwinding Mark the lr register as undefined at the start of execution, so unwind will stop at this frame. run-backtrace-*.sh from elfutils testsuite will fail without this patch. * sysdeps/csky/abiv2/start.S: Mark lr as undefined. * sysdeps/unix/sysv/linux/csky/abiv2/clone.S: Likewise. * sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S: Likewise. --- sysdeps/csky/abiv2/start.S | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sysdeps/csky') diff --git a/sysdeps/csky/abiv2/start.S b/sysdeps/csky/abiv2/start.S index 324ed69..b1e6152 100644 --- a/sysdeps/csky/abiv2/start.S +++ b/sysdeps/csky/abiv2/start.S @@ -46,6 +46,9 @@ .type _start,@function; .align 4; _start: + cfi_startproc + .cfi_label .Ldummy + cfi_undefined (lr) subi sp, 8 /* Clear the link register since this is the outermost frame. */ movi lr, 0 @@ -96,6 +99,7 @@ _start: /* Should never get here. */ jsri abort #endif /* !SHARED */ + cfi_endproc .size _start,.-_start -- cgit v1.1