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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/csky | |
| parent | 827e30f3a31ee294eb23dc572f8af62158049257 (diff) | |
| download | glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.zip glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.tar.gz glibc-c4e5f34bf0d818be747edf9a30e4152953cc6706.tar.bz2 | |
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/csky')
| -rw-r--r-- | sysdeps/csky/abiv2/start.S | 4 |
1 files changed, 4 insertions, 0 deletions
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 |