1/* 2 * arch/s390/kernel/base.S 3 * 4 * Copyright IBM Corp. 2006,2007 5 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> 6 * Michael Holzheu <holzheu@de.ibm.com> 7 */ 8 9#include <asm/asm-offsets.h> 10#include <asm/ptrace.h> 11 12#ifdef CONFIG_64BIT 13 14 .globl s390_base_mcck_handler 15s390_base_mcck_handler: 16 basr %r13,0 170: lg %r15,__LC_PANIC_STACK # load panic stack 18 aghi %r15,-STACK_FRAME_OVERHEAD 19 larl %r1,s390_base_mcck_handler_fn 20 lg %r1,0(%r1) 21 ltgr %r1,%r1 22 jz 1f 23 basr %r14,%r1 241: la %r1,4095 25 lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1) 26 lpswe __LC_MCK_OLD_PSW 27 28 .section .bss 29 .globl s390_base_mcck_handler_fn 30s390_base_mcck_handler_fn: 31 .quad 0 32 .previous 33 34 .globl s390_base_ext_handler 35s390_base_ext_handler: 36 stmg %r0,%r15,__LC_SAVE_AREA 37 basr %r13,0 380: aghi %r15,-STACK_FRAME_OVERHEAD 39 larl %r1,s390_base_ext_handler_fn 40 lg %r1,0(%r1) 41 ltgr %r1,%r1 42 jz 1f 43 basr %r14,%r1 441: lmg %r0,%r15,__LC_SAVE_AREA 45 ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit 46 lpswe __LC_EXT_OLD_PSW 47 48 .section .bss 49 .globl s390_base_ext_handler_fn 50s390_base_ext_handler_fn: 51 .quad 0 52 .previous 53 54 .globl s390_base_pgm_handler 55s390_base_pgm_handler: 56 stmg %r0,%r15,__LC_SAVE_AREA 57 basr %r13,0 580: aghi %r15,-STACK_FRAME_OVERHEAD 59 larl %r1,s390_base_pgm_handler_fn 60 lg %r1,0(%r1) 61 ltgr %r1,%r1 62 jz 1f 63 basr %r14,%r1 64 lmg %r0,%r15,__LC_SAVE_AREA 65 lpswe __LC_PGM_OLD_PSW 661: lpswe disabled_wait_psw-0b(%r13) 67 68 .align 8 69disabled_wait_psw: 70 .quad 0x0002000180000000,0x0000000000000000 + s390_base_pgm_handler 71 72 .section .bss 73 .globl s390_base_pgm_handler_fn 74s390_base_pgm_handler_fn: 75 .quad 0 76 .previous 77 78#else /* CONFIG_64BIT */ 79 80 .globl s390_base_mcck_handler 81s390_base_mcck_handler: 82 basr %r13,0 830: l %r15,__LC_PANIC_STACK # load panic stack 84 ahi %r15,-STACK_FRAME_OVERHEAD 85 l %r1,2f-0b(%r13) 86 l %r1,0(%r1) 87 ltr %r1,%r1 88 jz 1f 89 basr %r14,%r1 901: lm %r0,%r15,__LC_GPREGS_SAVE_AREA 91 lpsw __LC_MCK_OLD_PSW 92 932: .long s390_base_mcck_handler_fn 94 95 .section .bss 96 .globl s390_base_mcck_handler_fn 97s390_base_mcck_handler_fn: 98 .long 0 99 .previous 100 101 .globl s390_base_ext_handler 102s390_base_ext_handler: 103 stm %r0,%r15,__LC_SAVE_AREA 104 basr %r13,0 1050: ahi %r15,-STACK_FRAME_OVERHEAD 106 l %r1,2f-0b(%r13) 107 l %r1,0(%r1) 108 ltr %r1,%r1 109 jz 1f 110 basr %r14,%r1 1111: lm %r0,%r15,__LC_SAVE_AREA 112 ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit 113 lpsw __LC_EXT_OLD_PSW 114 1152: .long s390_base_ext_handler_fn 116 117 .section .bss 118 .globl s390_base_ext_handler_fn 119s390_base_ext_handler_fn: 120 .long 0 121 .previous 122 123 .globl s390_base_pgm_handler 124s390_base_pgm_handler: 125 stm %r0,%r15,__LC_SAVE_AREA 126 basr %r13,0 1270: ahi %r15,-STACK_FRAME_OVERHEAD 128 l %r1,2f-0b(%r13) 129 l %r1,0(%r1) 130 ltr %r1,%r1 131 jz 1f 132 basr %r14,%r1 133 lm %r0,%r15,__LC_SAVE_AREA 134 lpsw __LC_PGM_OLD_PSW 135 1361: lpsw disabled_wait_psw-0b(%r13) 137 1382: .long s390_base_pgm_handler_fn 139 140disabled_wait_psw: 141 .align 8 142 .long 0x000a0000,0x00000000 + s390_base_pgm_handler 143 144 .section .bss 145 .globl s390_base_pgm_handler_fn 146s390_base_pgm_handler_fn: 147 .long 0 148 .previous 149 150#endif /* CONFIG_64BIT */ 151