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| author | Andreas Schwab <schwab@suse.de> | 2023-11-23 18:23:46 +0100 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2023-12-05 12:49:37 +0100 |
| commit | 3f798427884fa57770e8e2291cf58d5918254bb5 (patch) | |
| tree | 0ce0e1bb7655d89dabfe13620727a8de0bc200c2 | |
| parent | 63d0a35d5f223a3f4b68190567b7d4d44545bce5 (diff) | |
| download | glibc-3f798427884fa57770e8e2291cf58d5918254bb5.tar.gz glibc-3f798427884fa57770e8e2291cf58d5918254bb5.tar.xz glibc-3f798427884fa57770e8e2291cf58d5918254bb5.zip | |
aarch64: correct CFI in rawmemchr (bug 31113)
The .cfi_return_column directive changes the return column for the whole FDE range. But the actual intent is to tell the unwinder that the value in x30 (lr) now resides in x15 after the move, and that is expressed by the .cfi_register directive.
| -rw-r--r-- | sysdeps/aarch64/rawmemchr.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/aarch64/rawmemchr.S b/sysdeps/aarch64/rawmemchr.S index efc4b7007b..1fff094215 100644 --- a/sysdeps/aarch64/rawmemchr.S +++ b/sysdeps/aarch64/rawmemchr.S @@ -31,7 +31,7 @@ ENTRY (__rawmemchr) L(do_strlen): mov x15, x30 - cfi_return_column (x15) + cfi_register (x30, x15) mov x14, x0 bl __strlen add x0, x14, x0 |