cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dbg_stackcheck.S (466B)

      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