25097bf153
Currently the storage of the machine flags is a globally exported unsigned long long variable. By moving the storage location into the lowcore struct we allow assembler code to check machine_flags directly even without needing a register. Addtionally the lowcore and therefore the machine flags too will be in cache most of the time. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
450 lines
14 KiB
C
450 lines
14 KiB
C
/*
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* include/asm-s390/lowcore.h
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*
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* S390 version
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* Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
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* Author(s): Hartmut Penner (hp@de.ibm.com),
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* Martin Schwidefsky (schwidefsky@de.ibm.com),
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* Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
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*/
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#ifndef _ASM_S390_LOWCORE_H
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#define _ASM_S390_LOWCORE_H
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#define __LC_IPL_PARMBLOCK_PTR 0x0014
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#define __LC_EXT_PARAMS 0x0080
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#define __LC_CPU_ADDRESS 0x0084
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#define __LC_EXT_INT_CODE 0x0086
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#define __LC_SVC_ILC 0x0088
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#define __LC_SVC_INT_CODE 0x008a
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#define __LC_PGM_ILC 0x008c
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#define __LC_PGM_INT_CODE 0x008e
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#define __LC_PER_ATMID 0x0096
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#define __LC_PER_ADDRESS 0x0098
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#define __LC_PER_ACCESS_ID 0x00a1
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#define __LC_AR_MODE_ID 0x00a3
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#define __LC_SUBCHANNEL_ID 0x00b8
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#define __LC_SUBCHANNEL_NR 0x00ba
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#define __LC_IO_INT_PARM 0x00bc
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#define __LC_IO_INT_WORD 0x00c0
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#define __LC_MCCK_CODE 0x00e8
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#define __LC_DUMP_REIPL 0x0e00
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#ifndef __s390x__
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#define __LC_EXT_OLD_PSW 0x0018
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#define __LC_SVC_OLD_PSW 0x0020
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#define __LC_PGM_OLD_PSW 0x0028
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#define __LC_MCK_OLD_PSW 0x0030
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#define __LC_IO_OLD_PSW 0x0038
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#define __LC_EXT_NEW_PSW 0x0058
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#define __LC_SVC_NEW_PSW 0x0060
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#define __LC_PGM_NEW_PSW 0x0068
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#define __LC_MCK_NEW_PSW 0x0070
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#define __LC_IO_NEW_PSW 0x0078
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#define __LC_SAVE_AREA 0x0200
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#define __LC_RETURN_PSW 0x0240
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#define __LC_RETURN_MCCK_PSW 0x0248
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#define __LC_SYNC_ENTER_TIMER 0x0250
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#define __LC_ASYNC_ENTER_TIMER 0x0258
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#define __LC_EXIT_TIMER 0x0260
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#define __LC_USER_TIMER 0x0268
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#define __LC_SYSTEM_TIMER 0x0270
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#define __LC_STEAL_TIMER 0x0278
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#define __LC_LAST_UPDATE_TIMER 0x0280
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#define __LC_LAST_UPDATE_CLOCK 0x0288
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#define __LC_CURRENT 0x0290
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#define __LC_THREAD_INFO 0x0294
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#define __LC_KERNEL_STACK 0x0298
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#define __LC_ASYNC_STACK 0x029c
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#define __LC_PANIC_STACK 0x02a0
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#define __LC_KERNEL_ASCE 0x02a4
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#define __LC_USER_ASCE 0x02a8
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#define __LC_USER_EXEC_ASCE 0x02ac
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#define __LC_CPUID 0x02b0
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#define __LC_INT_CLOCK 0x02c8
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#define __LC_MACHINE_FLAGS 0x02d8
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#define __LC_IRB 0x0300
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#define __LC_PFAULT_INTPARM 0x0080
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#define __LC_CPU_TIMER_SAVE_AREA 0x00d8
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#define __LC_CLOCK_COMP_SAVE_AREA 0x00e0
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#define __LC_PSW_SAVE_AREA 0x0100
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#define __LC_PREFIX_SAVE_AREA 0x0108
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#define __LC_AREGS_SAVE_AREA 0x0120
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#define __LC_FPREGS_SAVE_AREA 0x0160
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#define __LC_GPREGS_SAVE_AREA 0x0180
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#define __LC_CREGS_SAVE_AREA 0x01c0
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#else /* __s390x__ */
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#define __LC_LAST_BREAK 0x0110
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#define __LC_EXT_OLD_PSW 0x0130
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#define __LC_SVC_OLD_PSW 0x0140
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#define __LC_PGM_OLD_PSW 0x0150
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#define __LC_MCK_OLD_PSW 0x0160
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#define __LC_IO_OLD_PSW 0x0170
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#define __LC_EXT_NEW_PSW 0x01b0
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#define __LC_SVC_NEW_PSW 0x01c0
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#define __LC_PGM_NEW_PSW 0x01d0
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#define __LC_MCK_NEW_PSW 0x01e0
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#define __LC_IO_NEW_PSW 0x01f0
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#define __LC_SAVE_AREA 0x0200
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#define __LC_RETURN_PSW 0x0280
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#define __LC_RETURN_MCCK_PSW 0x0290
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#define __LC_SYNC_ENTER_TIMER 0x02a0
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#define __LC_ASYNC_ENTER_TIMER 0x02a8
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#define __LC_EXIT_TIMER 0x02b0
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#define __LC_USER_TIMER 0x02b8
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#define __LC_SYSTEM_TIMER 0x02c0
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#define __LC_STEAL_TIMER 0x02c8
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#define __LC_LAST_UPDATE_TIMER 0x02d0
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#define __LC_LAST_UPDATE_CLOCK 0x02d8
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#define __LC_CURRENT 0x02e0
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#define __LC_THREAD_INFO 0x02e8
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#define __LC_KERNEL_STACK 0x02f0
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#define __LC_ASYNC_STACK 0x02f8
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#define __LC_PANIC_STACK 0x0300
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#define __LC_KERNEL_ASCE 0x0308
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#define __LC_USER_ASCE 0x0310
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#define __LC_USER_EXEC_ASCE 0x0318
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#define __LC_CPUID 0x0320
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#define __LC_INT_CLOCK 0x0340
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#define __LC_VDSO_PER_CPU 0x0350
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#define __LC_MACHINE_FLAGS 0x0358
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#define __LC_IRB 0x0380
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#define __LC_PASTE 0x03c0
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#define __LC_PFAULT_INTPARM 0x11b8
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#define __LC_FPREGS_SAVE_AREA 0x1200
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#define __LC_GPREGS_SAVE_AREA 0x1280
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#define __LC_PSW_SAVE_AREA 0x1300
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#define __LC_PREFIX_SAVE_AREA 0x1318
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#define __LC_FP_CREG_SAVE_AREA 0x131c
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#define __LC_TODREG_SAVE_AREA 0x1324
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#define __LC_CPU_TIMER_SAVE_AREA 0x1328
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#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
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#define __LC_AREGS_SAVE_AREA 0x1340
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#define __LC_CREGS_SAVE_AREA 0x1380
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#endif /* __s390x__ */
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#ifndef __ASSEMBLY__
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#include <asm/cpuid.h>
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#include <asm/ptrace.h>
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#include <linux/types.h>
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void restart_int_handler(void);
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void ext_int_handler(void);
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void system_call(void);
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void pgm_check_handler(void);
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void mcck_int_handler(void);
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void io_int_handler(void);
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struct save_area_s390 {
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u32 ext_save;
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u64 timer;
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u64 clk_cmp;
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u8 pad1[24];
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u8 psw[8];
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u32 pref_reg;
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u8 pad2[20];
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u32 acc_regs[16];
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u64 fp_regs[4];
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u32 gp_regs[16];
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u32 ctrl_regs[16];
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} __attribute__((packed));
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struct save_area_s390x {
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u64 fp_regs[16];
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u64 gp_regs[16];
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u8 psw[16];
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u8 pad1[8];
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u32 pref_reg;
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u32 fp_ctrl_reg;
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u8 pad2[4];
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u32 tod_reg;
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u64 timer;
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u64 clk_cmp;
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u8 pad3[8];
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u32 acc_regs[16];
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u64 ctrl_regs[16];
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} __attribute__((packed));
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union save_area {
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struct save_area_s390 s390;
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struct save_area_s390x s390x;
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};
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#define SAVE_AREA_BASE_S390 0xd4
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#define SAVE_AREA_BASE_S390X 0x1200
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#ifndef __s390x__
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#define SAVE_AREA_SIZE sizeof(struct save_area_s390)
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#define SAVE_AREA_BASE SAVE_AREA_BASE_S390
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#else
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#define SAVE_AREA_SIZE sizeof(struct save_area_s390x)
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#define SAVE_AREA_BASE SAVE_AREA_BASE_S390X
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#endif
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struct _lowcore
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{
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#ifndef __s390x__
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/* 0x0000 - 0x01ff: defined by architecture */
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psw_t restart_psw; /* 0x0000 */
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__u32 ccw2[4]; /* 0x0008 */
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psw_t external_old_psw; /* 0x0018 */
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psw_t svc_old_psw; /* 0x0020 */
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psw_t program_old_psw; /* 0x0028 */
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psw_t mcck_old_psw; /* 0x0030 */
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psw_t io_old_psw; /* 0x0038 */
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__u8 pad_0x0040[0x0058-0x0040]; /* 0x0040 */
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psw_t external_new_psw; /* 0x0058 */
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psw_t svc_new_psw; /* 0x0060 */
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psw_t program_new_psw; /* 0x0068 */
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psw_t mcck_new_psw; /* 0x0070 */
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psw_t io_new_psw; /* 0x0078 */
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__u32 ext_params; /* 0x0080 */
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__u16 cpu_addr; /* 0x0084 */
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__u16 ext_int_code; /* 0x0086 */
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__u16 svc_ilc; /* 0x0088 */
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__u16 svc_code; /* 0x008a */
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__u16 pgm_ilc; /* 0x008c */
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__u16 pgm_code; /* 0x008e */
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__u32 trans_exc_code; /* 0x0090 */
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__u16 mon_class_num; /* 0x0094 */
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__u16 per_perc_atmid; /* 0x0096 */
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__u32 per_address; /* 0x0098 */
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__u32 monitor_code; /* 0x009c */
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__u8 exc_access_id; /* 0x00a0 */
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__u8 per_access_id; /* 0x00a1 */
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__u8 pad_0x00a2[0x00b8-0x00a2]; /* 0x00a2 */
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__u16 subchannel_id; /* 0x00b8 */
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__u16 subchannel_nr; /* 0x00ba */
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__u32 io_int_parm; /* 0x00bc */
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__u32 io_int_word; /* 0x00c0 */
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__u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
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__u32 stfl_fac_list; /* 0x00c8 */
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__u8 pad_0x00cc[0x00d4-0x00cc]; /* 0x00cc */
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__u32 extended_save_area_addr; /* 0x00d4 */
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__u32 cpu_timer_save_area[2]; /* 0x00d8 */
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__u32 clock_comp_save_area[2]; /* 0x00e0 */
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__u32 mcck_interruption_code[2]; /* 0x00e8 */
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__u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
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__u32 external_damage_code; /* 0x00f4 */
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__u32 failing_storage_address; /* 0x00f8 */
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__u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */
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__u32 st_status_fixed_logout[4]; /* 0x0100 */
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__u8 pad_0x0110[0x0120-0x0110]; /* 0x0110 */
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/* CPU register save area: defined by architecture */
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__u32 access_regs_save_area[16]; /* 0x0120 */
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__u32 floating_pt_save_area[8]; /* 0x0160 */
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__u32 gpregs_save_area[16]; /* 0x0180 */
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__u32 cregs_save_area[16]; /* 0x01c0 */
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/* Return psws. */
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__u32 save_area[16]; /* 0x0200 */
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psw_t return_psw; /* 0x0240 */
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psw_t return_mcck_psw; /* 0x0248 */
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/* CPU time accounting values */
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__u64 sync_enter_timer; /* 0x0250 */
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__u64 async_enter_timer; /* 0x0258 */
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__u64 exit_timer; /* 0x0260 */
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__u64 user_timer; /* 0x0268 */
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__u64 system_timer; /* 0x0270 */
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__u64 steal_timer; /* 0x0278 */
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__u64 last_update_timer; /* 0x0280 */
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__u64 last_update_clock; /* 0x0288 */
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/* Current process. */
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__u32 current_task; /* 0x0290 */
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__u32 thread_info; /* 0x0294 */
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__u32 kernel_stack; /* 0x0298 */
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/* Interrupt and panic stack. */
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__u32 async_stack; /* 0x029c */
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__u32 panic_stack; /* 0x02a0 */
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/* Address space pointer. */
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__u32 kernel_asce; /* 0x02a4 */
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__u32 user_asce; /* 0x02a8 */
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__u32 user_exec_asce; /* 0x02ac */
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/* SMP info area */
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cpuid_t cpu_id; /* 0x02b0 */
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__u32 cpu_nr; /* 0x02b8 */
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__u32 softirq_pending; /* 0x02bc */
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__u32 percpu_offset; /* 0x02c0 */
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__u32 ext_call_fast; /* 0x02c4 */
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__u64 int_clock; /* 0x02c8 */
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__u64 clock_comparator; /* 0x02d0 */
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__u32 machine_flags; /* 0x02d8 */
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__u8 pad_0x02dc[0x0300-0x02dc]; /* 0x02dc */
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/* Interrupt response block */
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__u8 irb[64]; /* 0x0300 */
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__u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
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/*
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* 0xe00 contains the address of the IPL Parameter Information
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* block. Dump tools need IPIB for IPL after dump.
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* Note: do not change the position of any fields in 0x0e00-0x0f00
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*/
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__u32 ipib; /* 0x0e00 */
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__u32 ipib_checksum; /* 0x0e04 */
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/* Align to the top 1k of prefix area */
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__u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */
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#else /* !__s390x__ */
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/* 0x0000 - 0x01ff: defined by architecture */
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__u32 ccw1[2]; /* 0x0000 */
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__u32 ccw2[4]; /* 0x0008 */
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__u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */
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__u32 ext_params; /* 0x0080 */
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__u16 cpu_addr; /* 0x0084 */
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__u16 ext_int_code; /* 0x0086 */
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__u16 svc_ilc; /* 0x0088 */
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__u16 svc_code; /* 0x008a */
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__u16 pgm_ilc; /* 0x008c */
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__u16 pgm_code; /* 0x008e */
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__u32 data_exc_code; /* 0x0090 */
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__u16 mon_class_num; /* 0x0094 */
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__u16 per_perc_atmid; /* 0x0096 */
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addr_t per_address; /* 0x0098 */
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__u8 exc_access_id; /* 0x00a0 */
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__u8 per_access_id; /* 0x00a1 */
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__u8 op_access_id; /* 0x00a2 */
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__u8 ar_access_id; /* 0x00a3 */
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__u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */
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addr_t trans_exc_code; /* 0x00a8 */
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addr_t monitor_code; /* 0x00b0 */
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__u16 subchannel_id; /* 0x00b8 */
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__u16 subchannel_nr; /* 0x00ba */
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__u32 io_int_parm; /* 0x00bc */
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__u32 io_int_word; /* 0x00c0 */
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__u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
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__u32 stfl_fac_list; /* 0x00c8 */
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__u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */
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__u32 mcck_interruption_code[2]; /* 0x00e8 */
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__u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
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__u32 external_damage_code; /* 0x00f4 */
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addr_t failing_storage_address; /* 0x00f8 */
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__u8 pad_0x0100[0x0120-0x0100]; /* 0x0100 */
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psw_t restart_old_psw; /* 0x0120 */
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psw_t external_old_psw; /* 0x0130 */
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psw_t svc_old_psw; /* 0x0140 */
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psw_t program_old_psw; /* 0x0150 */
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psw_t mcck_old_psw; /* 0x0160 */
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psw_t io_old_psw; /* 0x0170 */
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__u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */
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psw_t restart_psw; /* 0x01a0 */
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psw_t external_new_psw; /* 0x01b0 */
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psw_t svc_new_psw; /* 0x01c0 */
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psw_t program_new_psw; /* 0x01d0 */
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psw_t mcck_new_psw; /* 0x01e0 */
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psw_t io_new_psw; /* 0x01f0 */
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/* Entry/exit save area & return psws. */
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__u64 save_area[16]; /* 0x0200 */
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psw_t return_psw; /* 0x0280 */
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psw_t return_mcck_psw; /* 0x0290 */
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/* CPU accounting and timing values. */
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__u64 sync_enter_timer; /* 0x02a0 */
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__u64 async_enter_timer; /* 0x02a8 */
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__u64 exit_timer; /* 0x02b0 */
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__u64 user_timer; /* 0x02b8 */
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__u64 system_timer; /* 0x02c0 */
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__u64 steal_timer; /* 0x02c8 */
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__u64 last_update_timer; /* 0x02d0 */
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__u64 last_update_clock; /* 0x02d8 */
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/* Current process. */
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__u64 current_task; /* 0x02e0 */
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__u64 thread_info; /* 0x02e8 */
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__u64 kernel_stack; /* 0x02f0 */
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/* Interrupt and panic stack. */
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__u64 async_stack; /* 0x02f8 */
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__u64 panic_stack; /* 0x0300 */
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/* Address space pointer. */
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__u64 kernel_asce; /* 0x0308 */
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__u64 user_asce; /* 0x0310 */
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__u64 user_exec_asce; /* 0x0318 */
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/* SMP info area */
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cpuid_t cpu_id; /* 0x0320 */
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__u32 cpu_nr; /* 0x0328 */
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__u32 softirq_pending; /* 0x032c */
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__u64 percpu_offset; /* 0x0330 */
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__u64 ext_call_fast; /* 0x0338 */
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__u64 int_clock; /* 0x0340 */
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__u64 clock_comparator; /* 0x0348 */
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__u64 vdso_per_cpu_data; /* 0x0350 */
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__u64 machine_flags; /* 0x0358 */
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__u8 pad_0x0360[0x0380-0x0360]; /* 0x0360 */
|
|
|
|
/* Interrupt response block. */
|
|
__u8 irb[64]; /* 0x0380 */
|
|
|
|
/* Per cpu primary space access list */
|
|
__u32 paste[16]; /* 0x03c0 */
|
|
|
|
__u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
|
|
|
|
/*
|
|
* 0xe00 contains the address of the IPL Parameter Information
|
|
* block. Dump tools need IPIB for IPL after dump.
|
|
* Note: do not change the position of any fields in 0x0e00-0x0f00
|
|
*/
|
|
__u64 ipib; /* 0x0e00 */
|
|
__u32 ipib_checksum; /* 0x0e08 */
|
|
__u8 pad_0x0e0c[0x11b8-0x0e0c]; /* 0x0e0c */
|
|
|
|
/* 64 bit extparam used for pfault/diag 250: defined by architecture */
|
|
__u64 ext_params2; /* 0x11B8 */
|
|
__u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */
|
|
|
|
/* CPU register save area: defined by architecture */
|
|
__u64 floating_pt_save_area[16]; /* 0x1200 */
|
|
__u64 gpregs_save_area[16]; /* 0x1280 */
|
|
__u32 st_status_fixed_logout[4]; /* 0x1300 */
|
|
__u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */
|
|
__u32 prefixreg_save_area; /* 0x1318 */
|
|
__u32 fpt_creg_save_area; /* 0x131c */
|
|
__u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */
|
|
__u32 tod_progreg_save_area; /* 0x1324 */
|
|
__u32 cpu_timer_save_area[2]; /* 0x1328 */
|
|
__u32 clock_comp_save_area[2]; /* 0x1330 */
|
|
__u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */
|
|
__u32 access_regs_save_area[16]; /* 0x1340 */
|
|
__u64 cregs_save_area[16]; /* 0x1380 */
|
|
|
|
/* align to the top of the prefix area */
|
|
__u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */
|
|
#endif /* !__s390x__ */
|
|
} __attribute__((packed)); /* End structure*/
|
|
|
|
#define S390_lowcore (*((struct _lowcore *) 0))
|
|
extern struct _lowcore *lowcore_ptr[];
|
|
|
|
static inline void set_prefix(__u32 address)
|
|
{
|
|
asm volatile("spx %0" : : "m" (address) : "memory");
|
|
}
|
|
|
|
static inline __u32 store_prefix(void)
|
|
{
|
|
__u32 address;
|
|
|
|
asm volatile("stpx %0" : "=m" (address));
|
|
return address;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|