dbg_stackcheck.S

 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)
251:	stq	$31, -8($31)	# oops me, damn it.
26	br	1b
27
28	.end _mcount