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arch
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s390
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kernel
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reset.S

reset.S 1.9 KB
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  1. /*
    2. 

  2.  *  arch/s390/kernel/reset.S
    3. 

  3.  *
    4. 

  4.  *    Copyright (C) IBM Corp. 2006
    5. 

  5.  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
    6. 

  6.  *		 Michael Holzheu <holzheu@de.ibm.com>
    7. 

  7.  */
    8. 

  8. 

  9. #include <asm/ptrace.h>
    10. 

  10. #include <asm/lowcore.h>
    11. 

  11. 

  12. #ifdef CONFIG_64BIT
    13. 

  13. 

  14. 	.globl	reset_mcck_handler
    15. 

  15. reset_mcck_handler:
    16. 

  16. 	basr	%r13,0
    17. 

  17. 0:	lg	%r15,__LC_PANIC_STACK	# load panic stack
    18. 

  18. 	aghi	%r15,-STACK_FRAME_OVERHEAD
    19. 

  19. 	lg	%r1,s390_reset_mcck_handler-0b(%r13)
    20. 

  20. 	ltgr	%r1,%r1
    21. 

  21. 	jz	1f
    22. 

  22. 	basr	%r14,%r1
    23. 

  23. 1:	la	%r1,4095
    24. 

  24. 	lmg	%r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)
    25. 

  25. 	lpswe	__LC_MCK_OLD_PSW
    26. 

  26. 

  27. 	.globl	s390_reset_mcck_handler
    28. 

  28. s390_reset_mcck_handler:
    29. 

  29. 	.quad	0
    30. 

  30. 

  31. 	.globl	reset_pgm_handler
    32. 

  32. reset_pgm_handler:
    33. 

  33. 	stmg	%r0,%r15,__LC_SAVE_AREA
    34. 

  34. 	basr	%r13,0
    35. 

  35. 0:	lg	%r15,__LC_PANIC_STACK	# load panic stack
    36. 

  36. 	aghi	%r15,-STACK_FRAME_OVERHEAD
    37. 

  37. 	lg	%r1,s390_reset_pgm_handler-0b(%r13)
    38. 

  38. 	ltgr	%r1,%r1
    39. 

  39. 	jz	1f
    40. 

  40. 	basr	%r14,%r1
    41. 

  41. 	lmg	%r0,%r15,__LC_SAVE_AREA
    42. 

  42. 	lpswe	__LC_PGM_OLD_PSW
    43. 

  43. 1:	lpswe	disabled_wait_psw-0b(%r13)
    44. 

  44. 	.globl s390_reset_pgm_handler
    45. 

  45. s390_reset_pgm_handler:
    46. 

  46. 	.quad	0
    47. 

  47. 	.align	8
    48. 

  48. disabled_wait_psw:
    49. 

  49. 	.quad	0x0002000180000000,0x0000000000000000 + reset_pgm_handler
    50. 

  50. 

  51. #else /* CONFIG_64BIT */
    52. 

  52. 

  53. 	.globl	reset_mcck_handler
    54. 

  54. reset_mcck_handler:
    55. 

  55. 	basr	%r13,0
    56. 

  56. 0:	l	%r15,__LC_PANIC_STACK	# load panic stack
    57. 

  57. 	ahi	%r15,-STACK_FRAME_OVERHEAD
    58. 

  58. 	l	%r1,s390_reset_mcck_handler-0b(%r13)
    59. 

  59. 	ltr	%r1,%r1
    60. 

  60. 	jz	1f
    61. 

  61. 	basr	%r14,%r1
    62. 

  62. 1:	lm	%r0,%r15,__LC_GPREGS_SAVE_AREA
    63. 

  63. 	lpsw	__LC_MCK_OLD_PSW
    64. 

  64. 

  65. 	.globl	s390_reset_mcck_handler
    66. 

  66. s390_reset_mcck_handler:
    67. 

  67. 	.long	0
    68. 

  68. 

  69. 	.globl	reset_pgm_handler
    70. 

  70. reset_pgm_handler:
    71. 

  71. 	stm	%r0,%r15,__LC_SAVE_AREA
    72. 

  72. 	basr	%r13,0
    73. 

  73. 0:	l	%r15,__LC_PANIC_STACK	# load panic stack
    74. 

  74. 	ahi	%r15,-STACK_FRAME_OVERHEAD
    75. 

  75. 	l	%r1,s390_reset_pgm_handler-0b(%r13)
    76. 

  76. 	ltr	%r1,%r1
    77. 

  77. 	jz	1f
    78. 

  78. 	basr	%r14,%r1
    79. 

  79. 	lm	%r0,%r15,__LC_SAVE_AREA
    80. 

  80. 	lpsw	__LC_PGM_OLD_PSW
    81. 

  81. 

  82. 1:	lpsw	disabled_wait_psw-0b(%r13)
    83. 

  83. 	.globl	s390_reset_pgm_handler
    84. 

  84. s390_reset_pgm_handler:
    85. 

  85. 	.long	0
    86. 

  86. disabled_wait_psw:
    87. 

  87. 	.align 8
    88. 

  88. 	.long	0x000a0000,0x00000000 + reset_pgm_handler
    89. 

  89. 

  90. #endif /* CONFIG_64BIT */
    91.