kernel/arch/arm64/include/asm/sysreg.h

   1 /*
   2  * Macros for accessing system registers with older binutils.
   3  *
   4  * Copyright (C) 2014 ARM Ltd.
   5  * Author: Catalin Marinas <catalin.marinas@arm.com>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef __ASM_SYSREG_H
  21 #define __ASM_SYSREG_H
  22
  23 #define sys_reg(op0, op1, crn, crm, op2) \
  24         ((((op0)-2)<<19)|((op1)<<16)|((crn)<<12)|((crm)<<8)|((op2)<<5))
  25
  26 #ifdef __ASSEMBLY__
  27
  28         .irp    num,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
  29         .equ    __reg_num_x\num, \num
  30         .endr
  31         .equ    __reg_num_xzr, 31
  32
  33         .macro  mrs_s, rt, sreg
  34         .inst   0xd5300000|(\sreg)|(__reg_num_\rt)
  35         .endm
  36
  37         .macro  msr_s, sreg, rt
  38         .inst   0xd5100000|(\sreg)|(__reg_num_\rt)
  39         .endm
  40
  41 #else
  42
  43 asm(
  44 "       .irp    num,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\n"
  45 "       .equ    __reg_num_x\\num, \\num\n"
  46 "       .endr\n"
  47 "       .equ    __reg_num_xzr, 31\n"
  48 "\n"
  49 "       .macro  mrs_s, rt, sreg\n"
  50 "       .inst   0xd5300000|(\\sreg)|(__reg_num_\\rt)\n"
  51 "       .endm\n"
  52 "\n"
  53 "       .macro  msr_s, sreg, rt\n"
  54 "       .inst   0xd5100000|(\\sreg)|(__reg_num_\\rt)\n"
  55 "       .endm\n"
  56 );
  57
  58 #endif
  59
  60 #endif  /* __ASM_SYSREG_H */