diff options
Diffstat (limited to 'arch/s390/kvm/sie64a.S')
| -rw-r--r-- | arch/s390/kvm/sie64a.S | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/arch/s390/kvm/sie64a.S b/arch/s390/kvm/sie64a.S deleted file mode 100644 index 5faa1b1b23f..00000000000 --- a/arch/s390/kvm/sie64a.S +++ /dev/null | |||
| @@ -1,98 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * sie64a.S - low level sie call | ||
| 3 | * | ||
| 4 | * Copyright IBM Corp. 2008,2010 | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License (version 2 only) | ||
| 8 | * as published by the Free Software Foundation. | ||
| 9 | * | ||
| 10 | * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> | ||
| 11 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <linux/errno.h> | ||
| 15 | #include <asm/asm-offsets.h> | ||
| 16 | #include <asm/setup.h> | ||
| 17 | #include <asm/asm-offsets.h> | ||
| 18 | #include <asm/ptrace.h> | ||
| 19 | #include <asm/thread_info.h> | ||
| 20 | |||
| 21 | _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING) | ||
| 22 | |||
| 23 | /* | ||
| 24 | * offsets into stackframe | ||
| 25 | * SP_ = offsets into stack sie64 is called with | ||
| 26 | * SPI_ = offsets into irq stack | ||
| 27 | */ | ||
| 28 | SP_GREGS = __SF_EMPTY | ||
| 29 | SP_HOOK = __SF_EMPTY+8 | ||
| 30 | SP_GPP = __SF_EMPTY+16 | ||
| 31 | SPI_PSW = STACK_FRAME_OVERHEAD + __PT_PSW | ||
| 32 | |||
| 33 | |||
| 34 | .macro SPP newpp | ||
| 35 | tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_SPP | ||
| 36 | jz 0f | ||
| 37 | .insn s,0xb2800000,\newpp | ||
| 38 | 0: | ||
| 39 | .endm | ||
| 40 | |||
| 41 | sie_irq_handler: | ||
| 42 | SPP __LC_CMF_HPP # set host id | ||
| 43 | larl %r2,sie_inst | ||
| 44 | clg %r2,SPI_PSW+8(0,%r15) # intercepted sie | ||
| 45 | jne 1f | ||
| 46 | xc __LC_SIE_HOOK(8),__LC_SIE_HOOK | ||
| 47 | lg %r2,__LC_THREAD_INFO # pointer thread_info struct | ||
| 48 | tm __TI_flags+7(%r2),_TIF_EXIT_SIE | ||
| 49 | jz 0f | ||
| 50 | larl %r2,sie_exit # work pending, leave sie | ||
| 51 | stg %r2,SPI_PSW+8(0,%r15) | ||
| 52 | br %r14 | ||
| 53 | 0: larl %r2,sie_reenter # re-enter with guest id | ||
| 54 | stg %r2,SPI_PSW+8(0,%r15) | ||
| 55 | 1: br %r14 | ||
| 56 | |||
| 57 | /* | ||
| 58 | * sie64a calling convention: | ||
| 59 | * %r2 pointer to sie control block | ||
| 60 | * %r3 guest register save area | ||
| 61 | */ | ||
| 62 | .globl sie64a | ||
| 63 | sie64a: | ||
| 64 | stg %r3,SP_GREGS(%r15) # save guest register save area | ||
| 65 | stmg %r6,%r14,__SF_GPRS(%r15) # save registers on entry | ||
| 66 | lgr %r14,%r2 # pointer to sie control block | ||
| 67 | larl %r5,sie_irq_handler | ||
| 68 | stg %r2,SP_GPP(%r15) | ||
| 69 | stg %r5,SP_HOOK(%r15) # save hook target | ||
| 70 | lmg %r0,%r13,0(%r3) # load guest gprs 0-13 | ||
| 71 | sie_reenter: | ||
| 72 | mvc __LC_SIE_HOOK(8),SP_HOOK(%r15) | ||
| 73 | SPP SP_GPP(%r15) # set guest id | ||
| 74 | sie_inst: | ||
| 75 | sie 0(%r14) | ||
| 76 | xc __LC_SIE_HOOK(8),__LC_SIE_HOOK | ||
| 77 | SPP __LC_CMF_HPP # set host id | ||
| 78 | sie_exit: | ||
| 79 | lg %r14,SP_GREGS(%r15) | ||
| 80 | stmg %r0,%r13,0(%r14) # save guest gprs 0-13 | ||
| 81 | lghi %r2,0 | ||
| 82 | lmg %r6,%r14,__SF_GPRS(%r15) | ||
| 83 | br %r14 | ||
| 84 | |||
| 85 | sie_err: | ||
| 86 | xc __LC_SIE_HOOK(8),__LC_SIE_HOOK | ||
| 87 | SPP __LC_CMF_HPP # set host id | ||
| 88 | lg %r14,SP_GREGS(%r15) | ||
| 89 | stmg %r0,%r13,0(%r14) # save guest gprs 0-13 | ||
| 90 | lghi %r2,-EFAULT | ||
| 91 | lmg %r6,%r14,__SF_GPRS(%r15) | ||
| 92 | br %r14 | ||
| 93 | |||
| 94 | .section __ex_table,"a" | ||
| 95 | .quad sie_inst,sie_err | ||
| 96 | .quad sie_exit,sie_err | ||
| 97 | .quad sie_reenter,sie_err | ||
| 98 | .previous | ||