/* * 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 */