| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Diagnose 0x500 snippet used for PV interception tests |
| * |
| * Copyright (c) 2021 IBM Corp |
| * |
| * Authors: |
| * Janosch Frank <frankja@linux.ibm.com> |
| */ |
| #include <asm/asm-offsets.h> |
| #include "macros.S" |
| .section .text |
| |
| /* Clean and pre-load registers that are used for diag 500 */ |
| xgr %r1, %r1 |
| xgr %r2, %r2 |
| xgr %r3, %r3 |
| xgr %r4, %r4 |
| lghi %r1, 1 |
| lghi %r2, 2 |
| lghi %r3, 3 |
| lghi %r4, 4 |
| |
| /* Let's jump to the next label on a PGM */ |
| SET_PSW_NEW_ADDR 5, next, GEN_LC_PGM_NEW_PSW |
| |
| /* Execute the diag500 */ |
| diag 0, 0, 0x500 |
| |
| /* Should never be executed because of the PGM */ |
| diag 0, 0, 0x44 |
| |
| /* Execute again to test spec PGM injection*/ |
| next: |
| lh %r1, GEN_LC_PGM_INT_CODE |
| diag %r1, 0, 0x9c |
| larl %r5, done |
| stg %r5, GEN_LC_PGM_NEW_PSW + 8 |
| diag 0, 0, 0x500 |
| |
| /* Should never be executed because of the PGM */ |
| diag 0, 0, 0x44 |
| |
| done: |
| lh %r1, GEN_LC_PGM_INT_CODE |
| diag %r1, 0, 0x9c |
