arch/s390/kernel/earlypgm.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *    Copyright IBM Corp. 2006, 2007
   4  *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
   5  */
   6
   7 #include <linux/linkage.h>
   8 #include <asm/asm-offsets.h>
   9
  10 SYM_CODE_START(early_pgm_check_handler)
  11         stmg    %r8,%r15,__LC_SAVE_AREA_SYNC
  12         aghi    %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)
  13         la      %r11,STACK_FRAME_OVERHEAD(%r15)
  14         xc      __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
  15         stmg    %r0,%r7,__PT_R0(%r11)
  16         mvc     __PT_PSW(16,%r11),__LC_PGM_OLD_PSW
  17         mvc     __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
  18         lgr     %r2,%r11
  19         brasl   %r14,__do_early_pgm_check
  20         mvc     __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15)
  21         lmg     %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)
  22         lpswe   __LC_RETURN_PSW
  23 SYM_CODE_END(early_pgm_check_handler)