| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * arch/alpha/lib/dbg_stackcheck.S |
| 4 | * Contributed by Richard |
| 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, |
| 22 | cmpult $30, $0, $0 |
| 23 | bne $0, 1f |
| 24 | |
| 25 | 1: stq $31, -8($31) # oops me, damn it. |
| 26 | br 1b |
| 27 | |
| 28 | .end _mcount |