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aarch64: Add GCS support to vfork

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Szabolcs Nagy 2023-12-27 18:36:10 +00:00 committed by Yury Khrustalev
parent 839197fdeb
commit 4b2f9ca4e7
1 changed files with 7 additions and 1 deletions
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8
sysdeps/unix/sysv/linux/aarch64/vfork.S
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@ -33,8 +33,14 @@ 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.
Clear x30 to crash early if the child tries to ret. */
mov x1, x30
mov x30, 0
br x1
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)