xref: /OK3568_Linux_fs/kernel/arch/alpha/lib/dbg_current.S (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun/*
3*4882a593Smuzhiyun * arch/alpha/lib/dbg_current.S
4*4882a593Smuzhiyun * Contributed by Richard Henderson (rth@cygnus.com)
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Trap if we find current not correct.
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun#include <asm/pal.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun	.text
12*4882a593Smuzhiyun	.set noat
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun	.globl _mcount
15*4882a593Smuzhiyun	.ent _mcount
16*4882a593Smuzhiyun_mcount:
17*4882a593Smuzhiyun	.frame $30, 0, $28, 0
18*4882a593Smuzhiyun	.prologue 0
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun	lda	$0, -0x4000($30)
21*4882a593Smuzhiyun	cmpult	$8, $30, $1
22*4882a593Smuzhiyun	cmpule	$0, $30, $2
23*4882a593Smuzhiyun	and	$1, $2, $3
24*4882a593Smuzhiyun	bne	$3, 1f
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun	call_pal PAL_bugchk
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun1:	ret	$31, ($28), 1
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun	.end _mcount
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