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| author | Mao Han <han_mao@c-sky.com> | 2019-03-11 09:51:14 +0800 |
|---|---|---|
| committer | Mao Han <han_mao@c-sky.com> | 2019-03-11 09:51:14 +0800 |
| commit | c4e5f34bf0d818be747edf9a30e4152953cc6706 (patch) | |
| tree | 5a949262e0659412ca4398ac4be1af56fe59207b /sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S | |
| parent | 827e30f3a31ee294eb23dc572f8af62158049257 (diff) | |
| download | glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.tar.gz glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.tar.xz glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.zip | |
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.
Diffstat (limited to 'sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S b/sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S index 6d3f04f9f0..34de6e3ab4 100644 --- a/sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S +++ b/sysdeps/unix/sysv/linux/csky/abiv2/setcontext.S @@ -62,6 +62,8 @@ END (setcontext) weak_alias (__setcontext, setcontext) ENTRY (__startcontext) + .cfi_label .Ldummy + cfi_undefined (lr) mov a0, r9 cmpnei r9, 0 /* r9 was set in makecontext. */ bf 1f /* null, then exit. */ |