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| author | Andreas Schwab <schwab@suse.de> | 2023-11-23 18:23:46 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2024-04-09 18:43:49 +0100 |
| commit | 4818620ee2f938120cc1fa5f868a9feedf138cdc (patch) | |
| tree | 54365e4b2b6a0be2afe57300193e1b35128ad03e | |
| parent | 062d8a648f6fd8389094008cca625ce5c8a62177 (diff) | |
| download | glibc-4818620ee2f938120cc1fa5f868a9feedf138cdc.tar.gz glibc-4818620ee2f938120cc1fa5f868a9feedf138cdc.tar.xz glibc-4818620ee2f938120cc1fa5f868a9feedf138cdc.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. (cherry picked from commit 3f798427884fa57770e8e2291cf58d5918254bb5)
| -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 aa49892dcb..a92b8ea875 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 |