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Diffstat (limited to 'arch/arm64/kernel/probes/kprobes_trampoline.S')
-rw-r--r--arch/arm64/kernel/probes/kprobes_trampoline.S8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm64/kernel/probes/kprobes_trampoline.S b/arch/arm64/kernel/probes/kprobes_trampoline.S
index 288a84e253cc..9a6499bed58b 100644
--- a/arch/arm64/kernel/probes/kprobes_trampoline.S
+++ b/arch/arm64/kernel/probes/kprobes_trampoline.S
@@ -61,11 +61,14 @@
ldp x28, x29, [sp, #S_X28]
.endm
-SYM_CODE_START(kretprobe_trampoline)
+SYM_CODE_START(__kretprobe_trampoline)
sub sp, sp, #PT_REGS_SIZE
save_all_base_regs
+ /* Setup a frame pointer. */
+ add x29, sp, #S_FP
+
mov x0, sp
bl trampoline_probe_handler
/*
@@ -74,9 +77,10 @@ SYM_CODE_START(kretprobe_trampoline)
*/
mov lr, x0
+ /* The frame pointer (x29) is restored with other registers. */
restore_all_base_regs
add sp, sp, #PT_REGS_SIZE
ret
-SYM_CODE_END(kretprobe_trampoline)
+SYM_CODE_END(__kretprobe_trampoline)