musl: Add unwind protection to aarch64 clone() implementation.

ziglang · Nov 8, 2024 · 7410c74 · 7410c74
1 parent 752bfe5
commit 7410c74
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/lib/libc/musl/src/thread/aarch64/clone.s b/lib/libc/musl/src/thread/aarch64/clone.s
@@ -8,6 +8,8 @@
 .hidden __clone
 .type   __clone,%function
 __clone:
+	.cfi_startproc
+
 	// align stack and save func,arg
 	and x1,x1,#-16
 	stp x0,x3,[x1,#-16]!
@@ -24,7 +26,12 @@ __clone:
 	// parent
 	ret
 	// child
-1:	ldp x1,x0,[sp],#16
+1:	.cfi_undefined lr
+	mov fp, 0
+
+	ldp x1,x0,[sp],#16
 	blr x1
 	mov x8,#93 // SYS_exit
 	svc #0
+
+	.cfi_endproc