/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Assembler helper macros to generate .byte/.word code for instructions
 * that are unknown to older binutils versions.
 */

#ifndef __ASM_S390_INSN_COMMON_ASM_H
#define __ASM_S390_INSN_COMMON_ASM_H

#ifdef __ASSEMBLER__

/*
 * GR_NUM - Retrieve general-purpose register number
 *
 * @opd:        Operand to store register number
 * @gr:         String designation register in the format "%rN"
 */
.macro  GR_NUM  opd gr
        \opd = 255
        .irp rs,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
        .ifc \gr,%r\rs
                \opd = \rs
        .endif
        .endr
        .if \opd == 255
                \opd = \gr
        .endif
.endm

/*
 * VX_NUM - Retrieve vector register number
 *
 * @opd:        Operand to store register number
 * @vxr:        String designation register in the format "%vN"
 *
 * The vector register number is used for as input number to the
 * instruction and, as well as, to compute the RXB field of the
 * instruction.
 */
.macro  VX_NUM  opd vxr
        \opd = 255
        .irp vs,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
        .ifc \vxr,%v\vs
                \opd = \vs
        .endif
        .endr
        .if \opd == 255
                \opd = \vxr
        .endif
.endm

#endif  /* __ASSEMBLER__ */
#endif  /* __ASM_S390_INSN_COMMON_ASM_H */