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authorryo <ryo@NetBSD.org>2022-05-31 07:40:25 +0000
committerryo <ryo@NetBSD.org>2022-05-31 07:40:25 +0000
commitaeea3f62eb246aaf2fd379bef035ddcc752ea7a5 (patch)
treef2ae4ed214549c1c4ddd3b520594a0e3ccd029ee
parente0b12be40429438710e05165d3dece116363aa61 (diff)
make a frame pointer to show a backtrace correctly.
-rw-r--r--sys/arch/aarch64/aarch64/cpuswitch.S7
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/arch/aarch64/aarch64/cpuswitch.S b/sys/arch/aarch64/aarch64/cpuswitch.S
index e1c77d89053..9ff9538c0f5 100644
--- a/sys/arch/aarch64/aarch64/cpuswitch.S
+++ b/sys/arch/aarch64/aarch64/cpuswitch.S
@@ -1,4 +1,4 @@
-/* $NetBSD: cpuswitch.S,v 1.34 2022/05/06 06:09:50 ryo Exp $ */
+/* $NetBSD: cpuswitch.S,v 1.35 2022/05/31 07:40:25 ryo Exp $ */
/*-
* Copyright (c) 2014, 2020 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
#include "opt_ddb.h"
#include "opt_kasan.h"
-RCSID("$NetBSD: cpuswitch.S,v 1.34 2022/05/06 06:09:50 ryo Exp $")
+RCSID("$NetBSD: cpuswitch.S,v 1.35 2022/05/31 07:40:25 ryo Exp $")
ARMV8_DEFINE_OPTIONS
@@ -315,7 +315,10 @@ END(lwp_trampoline)
#ifdef DDB
ENTRY_NP(cpu_Debugger)
+ stp fp, lr, [sp, #-16]!
+ mov fp, sp
brk #0xffff
+ ldp fp, lr, [sp], #16
ret
END(cpu_Debugger)
#endif /* DDB */