230c77a5e9
When gcc with -pg, it'll add _mcount stub in every function. We need implement the _mcount in kernel and ftrace depends on stackstrace. To do: call-graph, dynamic ftrace Signed-off-by: Guo Ren <ren_guo@c-sky.com>
25 lines
434 B
ArmAsm
25 lines
434 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#include <linux/linkage.h>
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ENTRY (_mcount)
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subi sp, 20
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stw a0, (sp, 0)
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stw a1, (sp, 4)
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stw a2, (sp, 8)
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stw a3, (sp, 12)
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stw lr, (sp, 16)
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mov a1, lr
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ldw a0, (sp, 20)
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jsri csky_mcount
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ldw a0, (sp, 0)
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ldw a1, (sp, 4)
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ldw a2, (sp, 8)
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ldw a3, (sp, 12)
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ldw t1, (sp, 16)
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ldw lr, (sp, 20)
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addi sp, 24
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jmp t1
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END (_mcount)
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