diff options
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/vfork.S | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/vfork.S b/sysdeps/unix/sysv/linux/aarch64/vfork.S index 2761856..d5943a7 100644 --- a/sysdeps/unix/sysv/linux/aarch64/vfork.S +++ b/sysdeps/unix/sysv/linux/aarch64/vfork.S @@ -33,8 +33,13 @@ ENTRY (__vfork) cmn x0, #4095 b.cs .Lsyscall_error + cbz x0, L(child) RET - +L(child): + /* Return with indirect branch in the child to support GCS. + Compilers insert BTI instruction after vfork() to make + sure return via BR works on systems with BTI. */ + br x30 PSEUDO_END (__vfork) libc_hidden_def (__vfork) |