| /* |
| * arch/s390/kernel/base.S |
| * |
| * Copyright IBM Corp. 2006,2007 |
| * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> |
| * Michael Holzheu <holzheu@de.ibm.com> |
| */ |
| |
| #include <asm/ptrace.h> |
| #include <asm/lowcore.h> |
| |
| #ifdef CONFIG_64BIT |
| |
| .globl s390_base_mcck_handler |
| s390_base_mcck_handler: |
| basr %r13,0 |
| 0: lg %r15,__LC_PANIC_STACK # load panic stack |
| aghi %r15,-STACK_FRAME_OVERHEAD |
| larl %r1,s390_base_mcck_handler_fn |
| lg %r1,0(%r1) |
| ltgr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| 1: la %r1,4095 |
| lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1) |
| lpswe __LC_MCK_OLD_PSW |
| |
| .section .bss |
| .globl s390_base_mcck_handler_fn |
| s390_base_mcck_handler_fn: |
| .quad 0 |
| .previous |
| |
| .globl s390_base_ext_handler |
| s390_base_ext_handler: |
| stmg %r0,%r15,__LC_SAVE_AREA |
| basr %r13,0 |
| 0: aghi %r15,-STACK_FRAME_OVERHEAD |
| larl %r1,s390_base_ext_handler_fn |
| lg %r1,0(%r1) |
| ltgr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| 1: lmg %r0,%r15,__LC_SAVE_AREA |
| ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit |
| lpswe __LC_EXT_OLD_PSW |
| |
| .section .bss |
| .globl s390_base_ext_handler_fn |
| s390_base_ext_handler_fn: |
| .quad 0 |
| .previous |
| |
| .globl s390_base_pgm_handler |
| s390_base_pgm_handler: |
| stmg %r0,%r15,__LC_SAVE_AREA |
| basr %r13,0 |
| 0: aghi %r15,-STACK_FRAME_OVERHEAD |
| larl %r1,s390_base_pgm_handler_fn |
| lg %r1,0(%r1) |
| ltgr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| lmg %r0,%r15,__LC_SAVE_AREA |
| lpswe __LC_PGM_OLD_PSW |
| 1: lpswe disabled_wait_psw-0b(%r13) |
| |
| .align 8 |
| disabled_wait_psw: |
| .quad 0x0002000180000000,0x0000000000000000 + s390_base_pgm_handler |
| |
| .section .bss |
| .globl s390_base_pgm_handler_fn |
| s390_base_pgm_handler_fn: |
| .quad 0 |
| .previous |
| |
| #else /* CONFIG_64BIT */ |
| |
| .globl s390_base_mcck_handler |
| s390_base_mcck_handler: |
| basr %r13,0 |
| 0: l %r15,__LC_PANIC_STACK # load panic stack |
| ahi %r15,-STACK_FRAME_OVERHEAD |
| l %r1,2f-0b(%r13) |
| l %r1,0(%r1) |
| ltr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| 1: lm %r0,%r15,__LC_GPREGS_SAVE_AREA |
| lpsw __LC_MCK_OLD_PSW |
| |
| 2: .long s390_base_mcck_handler_fn |
| |
| .section .bss |
| .globl s390_base_mcck_handler_fn |
| s390_base_mcck_handler_fn: |
| .long 0 |
| .previous |
| |
| .globl s390_base_ext_handler |
| s390_base_ext_handler: |
| stm %r0,%r15,__LC_SAVE_AREA |
| basr %r13,0 |
| 0: ahi %r15,-STACK_FRAME_OVERHEAD |
| l %r1,2f-0b(%r13) |
| l %r1,0(%r1) |
| ltr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| 1: lm %r0,%r15,__LC_SAVE_AREA |
| ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit |
| lpsw __LC_EXT_OLD_PSW |
| |
| 2: .long s390_base_ext_handler_fn |
| |
| .section .bss |
| .globl s390_base_ext_handler_fn |
| s390_base_ext_handler_fn: |
| .long 0 |
| .previous |
| |
| .globl s390_base_pgm_handler |
| s390_base_pgm_handler: |
| stm %r0,%r15,__LC_SAVE_AREA |
| basr %r13,0 |
| 0: ahi %r15,-STACK_FRAME_OVERHEAD |
| l %r1,2f-0b(%r13) |
| l %r1,0(%r1) |
| ltr %r1,%r1 |
| jz 1f |
| basr %r14,%r1 |
| lm %r0,%r15,__LC_SAVE_AREA |
| lpsw __LC_PGM_OLD_PSW |
| |
| 1: lpsw disabled_wait_psw-0b(%r13) |
| |
| 2: .long s390_base_pgm_handler_fn |
| |
| disabled_wait_psw: |
| .align 8 |
| .long 0x000a0000,0x00000000 + s390_base_pgm_handler |
| |
| .section .bss |
| .globl s390_base_pgm_handler_fn |
| s390_base_pgm_handler_fn: |
| .long 0 |
| .previous |
| |
| #endif /* CONFIG_64BIT */ |
