LXR linux/arch/alpha/lib/dbg

   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
  29