arch/s390/kernel/reset.S

   1 /*
   2  *  arch/s390/kernel/reset.S
   3  *
   4  *    Copyright (C) IBM Corp. 2006
   5  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
   6  */
   7
   8 #include <asm/ptrace.h>
   9 #include <asm/lowcore.h>
  10
  11 #ifdef CONFIG_64BIT
  12
  13         .globl  reset_mcck_handler
  14 reset_mcck_handler:
  15         basr    %r13,0
  16 0:      lg      %r15,__LC_PANIC_STACK   # load panic stack
  17         aghi    %r15,-STACK_FRAME_OVERHEAD
  18         lg      %r1,s390_reset_mcck_handler-0b(%r13)
  19         ltgr    %r1,%r1
  20         jz      1f
  21         basr    %r14,%r1
  22 1:      la      %r1,4095
  23         lmg     %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)
  24         lpswe   __LC_MCK_OLD_PSW
  25
  26         .globl  s390_reset_mcck_handler
  27 s390_reset_mcck_handler:
  28         .quad   0
  29
  30 #else /* CONFIG_64BIT */
  31
  32         .globl  reset_mcck_handler
  33 reset_mcck_handler:
  34         basr    %r13,0
  35 0:      l       %r15,__LC_PANIC_STACK   # load panic stack
  36         ahi     %r15,-STACK_FRAME_OVERHEAD
  37         l       %r1,s390_reset_mcck_handler-0b(%r13)
  38         ltr     %r1,%r1
  39         jz      1f
  40         basr    %r14,%r1
  41 1:      lm      %r0,%r15,__LC_GPREGS_SAVE_AREA
  42         lpsw    __LC_MCK_OLD_PSW
  43
  44         .globl  s390_reset_mcck_handler
  45 s390_reset_mcck_handler:
  46         .long   0
  47
  48 #endif /* CONFIG_64BIT */