aarch64: use 0x516 as magic signal return address

klange · Jan 22, 2024 · ba5c9d7 · ba5c9d7
1 parent bad793c
commit ba5c9d7
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/kernel/arch/aarch64/arch.c b/kernel/arch/aarch64/arch.c
@@ -159,7 +159,7 @@ void arch_enter_signal_handler(uintptr_t entrypoint, int signum, struct regs *r)
 		"r"(0));
 
 	register uint64_t x0 __asm__("x0") = signum;
-	register uint64_t x30 __asm__("x30") = 0x8DEADBEEF;
+	register uint64_t x30 __asm__("x30") = 0x516;
 	register uint64_t x4 __asm__("x4") = (uintptr_t)this_core->sp_el1;
 
 	asm volatile(

diff --git a/kernel/arch/aarch64/main.c b/kernel/arch/aarch64/main.c
@@ -301,7 +301,7 @@ void aarch64_sync_enter(struct regs * r) {
 	}
 
 	/* Magic signal return */
-	if (elr == 0x8DEADBEEF && far == 0x8DEADBEEF) {
+	if (elr == 0x516 && far == 0x516) {
 		return_from_signal_handler(r);
 		goto _resume_user;
 	}