| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Commonly used assembly macros |
| * |
| * Copyright (c) 2022 IBM Corp |
| * |
| * Authors: |
| * Janosch Frank <frankja@linux.ibm.com> |
| */ |
| #include <asm/asm-offsets.h> |
| |
| /* |
| * Writes a PSW to addr_psw, useful for exception PSWs in lowcore |
| * |
| * reg is the scratch register used for temporary storage, it's NOT restored |
| * The psw address part is defined via psw_new_addr |
| * The psw mask part is always 64 bit |
| */ |
| .macro SET_PSW_NEW_ADDR reg, psw_new_addr, addr_psw |
| larl \reg, psw_mask_64 |
| mvc \addr_psw(8,%r0), 0(\reg) |
| larl \reg, \psw_new_addr |
| stg \reg, \addr_psw + 8 |
| .endm |
| |
| .section .rodata |
| psw_mask_64: |
| .quad 0x0000000180000000 |
