1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * arch/alpha/lib/dbg_stackcheck.S
4  * Contributed by Richard Henderson (rth@tamu.edu)
5  *
6  * Verify that we have not overflowed the stack.  Oops if we have.
7  */
8 
9 #include <asm/asm-offsets.h>
10 
11 	.text
12 	.set noat
13 
14 	.align 3
15 	.globl _mcount
16 	.ent _mcount
17 _mcount:
18 	.frame $30, 0, $28, 0
19 	.prologue 0
20 
21 	lda	$0, TASK_SIZE($8)
22 	cmpult	$30, $0, $0
23 	bne	$0, 1f
24 	ret	($28)
25 1:	stq	$31, -8($31)	# oops me, damn it.
26 	br	1b
27 
28 	.end _mcount
29