| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Diagnose 0x288 snippet used for PV interception testing. |
| * |
| * 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 288 */ |
| xgr %r0, %r0 |
| xgr %r1, %r1 |
| xgr %r3, %r3 |
| lghi %r0, 1 |
| lghi %r1, 2 |
| lghi %r2, 3 |
| |
| /* Let's jump to the pgm exit label on a PGM */ |
| SET_PSW_NEW_ADDR 4, exit_pgm, GEN_LC_PGM_NEW_PSW |
| |
| /* Execute the diag288 */ |
| diag %r0, %r2, 0x288 |
| |
| /* Force exit if we don't get a PGM */ |
| diag 0, 0, 0x44 |
| |
| /* Communicate the PGM code via diag9c(easiest) */ |
| exit_pgm: |
| lh %r1, GEN_LC_PGM_INT_CODE |
| diag %r1, 0, 0x9c |
