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Diffstat (limited to 'target/s390x/internal.h')
| -rw-r--r-- | target/s390x/internal.h | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/target/s390x/internal.h b/target/s390x/internal.h new file mode 100644 index 0000000000..b4d3583b24 --- /dev/null +++ b/target/s390x/internal.h @@ -0,0 +1,391 @@ +/* + * s390x internal definitions and helpers + * + * Copyright (c) 2009 Ulrich Hecht + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef S390X_INTERNAL_H +#define S390X_INTERNAL_H + +#include "cpu.h" + +#ifndef CONFIG_USER_ONLY +typedef struct LowCore { + /* prefix area: defined by architecture */ + uint32_t ccw1[2]; /* 0x000 */ + uint32_t ccw2[4]; /* 0x008 */ + uint8_t pad1[0x80 - 0x18]; /* 0x018 */ + uint32_t ext_params; /* 0x080 */ + uint16_t cpu_addr; /* 0x084 */ + uint16_t ext_int_code; /* 0x086 */ + uint16_t svc_ilen; /* 0x088 */ + uint16_t svc_code; /* 0x08a */ + uint16_t pgm_ilen; /* 0x08c */ + uint16_t pgm_code; /* 0x08e */ + uint32_t data_exc_code; /* 0x090 */ + uint16_t mon_class_num; /* 0x094 */ + uint16_t per_perc_atmid; /* 0x096 */ + uint64_t per_address; /* 0x098 */ + uint8_t exc_access_id; /* 0x0a0 */ + uint8_t per_access_id; /* 0x0a1 */ + uint8_t op_access_id; /* 0x0a2 */ + uint8_t ar_access_id; /* 0x0a3 */ + uint8_t pad2[0xA8 - 0xA4]; /* 0x0a4 */ + uint64_t trans_exc_code; /* 0x0a8 */ + uint64_t monitor_code; /* 0x0b0 */ + uint16_t subchannel_id; /* 0x0b8 */ + uint16_t subchannel_nr; /* 0x0ba */ + uint32_t io_int_parm; /* 0x0bc */ + uint32_t io_int_word; /* 0x0c0 */ + uint8_t pad3[0xc8 - 0xc4]; /* 0x0c4 */ + uint32_t stfl_fac_list; /* 0x0c8 */ + uint8_t pad4[0xe8 - 0xcc]; /* 0x0cc */ + uint32_t mcck_interruption_code[2]; /* 0x0e8 */ + uint8_t pad5[0xf4 - 0xf0]; /* 0x0f0 */ + uint32_t external_damage_code; /* 0x0f4 */ + uint64_t failing_storage_address; /* 0x0f8 */ + uint8_t pad6[0x110 - 0x100]; /* 0x100 */ + uint64_t per_breaking_event_addr; /* 0x110 */ + uint8_t pad7[0x120 - 0x118]; /* 0x118 */ + PSW restart_old_psw; /* 0x120 */ + PSW external_old_psw; /* 0x130 */ + PSW svc_old_psw; /* 0x140 */ + PSW program_old_psw; /* 0x150 */ + PSW mcck_old_psw; /* 0x160 */ + PSW io_old_psw; /* 0x170 */ + uint8_t pad8[0x1a0 - 0x180]; /* 0x180 */ + PSW restart_new_psw; /* 0x1a0 */ + PSW external_new_psw; /* 0x1b0 */ + PSW svc_new_psw; /* 0x1c0 */ + PSW program_new_psw; /* 0x1d0 */ + PSW mcck_new_psw; /* 0x1e0 */ + PSW io_new_psw; /* 0x1f0 */ + PSW return_psw; /* 0x200 */ + uint8_t irb[64]; /* 0x210 */ + uint64_t sync_enter_timer; /* 0x250 */ + uint64_t async_enter_timer; /* 0x258 */ + uint64_t exit_timer; /* 0x260 */ + uint64_t last_update_timer; /* 0x268 */ + uint64_t user_timer; /* 0x270 */ + uint64_t system_timer; /* 0x278 */ + uint64_t last_update_clock; /* 0x280 */ + uint64_t steal_clock; /* 0x288 */ + PSW return_mcck_psw; /* 0x290 */ + uint8_t pad9[0xc00 - 0x2a0]; /* 0x2a0 */ + /* System info area */ + uint64_t save_area[16]; /* 0xc00 */ + uint8_t pad10[0xd40 - 0xc80]; /* 0xc80 */ + uint64_t kernel_stack; /* 0xd40 */ + uint64_t thread_info; /* 0xd48 */ + uint64_t async_stack; /* 0xd50 */ + uint64_t kernel_asce; /* 0xd58 */ + uint64_t user_asce; /* 0xd60 */ + uint64_t panic_stack; /* 0xd68 */ + uint64_t user_exec_asce; /* 0xd70 */ + uint8_t pad11[0xdc0 - 0xd78]; /* 0xd78 */ + + /* SMP info area: defined by DJB */ + uint64_t clock_comparator; /* 0xdc0 */ + uint64_t ext_call_fast; /* 0xdc8 */ + uint64_t percpu_offset; /* 0xdd0 */ + uint64_t current_task; /* 0xdd8 */ + uint32_t softirq_pending; /* 0xde0 */ + uint32_t pad_0x0de4; /* 0xde4 */ + uint64_t int_clock; /* 0xde8 */ + uint8_t pad12[0xe00 - 0xdf0]; /* 0xdf0 */ + + /* 0xe00 is used as indicator for dump tools */ + /* whether the kernel died with panic() or not */ + uint32_t panic_magic; /* 0xe00 */ + + uint8_t pad13[0x11b8 - 0xe04]; /* 0xe04 */ + + /* 64 bit extparam used for pfault, diag 250 etc */ + uint64_t ext_params2; /* 0x11B8 */ + + uint8_t pad14[0x1200 - 0x11C0]; /* 0x11C0 */ + + /* System info area */ + + uint64_t floating_pt_save_area[16]; /* 0x1200 */ + uint64_t gpregs_save_area[16]; /* 0x1280 */ + uint32_t st_status_fixed_logout[4]; /* 0x1300 */ + uint8_t pad15[0x1318 - 0x1310]; /* 0x1310 */ + uint32_t prefixreg_save_area; /* 0x1318 */ + uint32_t fpt_creg_save_area; /* 0x131c */ + uint8_t pad16[0x1324 - 0x1320]; /* 0x1320 */ + uint32_t tod_progreg_save_area; /* 0x1324 */ + uint32_t cpu_timer_save_area[2]; /* 0x1328 */ + uint32_t clock_comp_save_area[2]; /* 0x1330 */ + uint8_t pad17[0x1340 - 0x1338]; /* 0x1338 */ + uint32_t access_regs_save_area[16]; /* 0x1340 */ + uint64_t cregs_save_area[16]; /* 0x1380 */ + + /* align to the top of the prefix area */ + + uint8_t pad18[0x2000 - 0x1400]; /* 0x1400 */ +} QEMU_PACKED LowCore; +#endif /* CONFIG_USER_ONLY */ + +#define MAX_ILEN 6 + +/* While the PoO talks about ILC (a number between 1-3) what is actually + stored in LowCore is shifted left one bit (an even between 2-6). As + this is the actual length of the insn and therefore more useful, that + is what we want to pass around and manipulate. To make sure that we + have applied this distinction universally, rename the "ILC" to "ILEN". */ +static inline int get_ilen(uint8_t opc) +{ + switch (opc >> 6) { + case 0: + return 2; + case 1: + case 2: + return 4; + default: + return 6; + } +} + +/* Compute the ATMID field that is stored in the per_perc_atmid lowcore + entry when a PER exception is triggered. */ +static inline uint8_t get_per_atmid(CPUS390XState *env) +{ + return ((env->psw.mask & PSW_MASK_64) ? (1 << 7) : 0) | + (1 << 6) | + ((env->psw.mask & PSW_MASK_32) ? (1 << 5) : 0) | + ((env->psw.mask & PSW_MASK_DAT) ? (1 << 4) : 0) | + ((env->psw.mask & PSW_ASC_SECONDARY) ? (1 << 3) : 0) | + ((env->psw.mask & PSW_ASC_ACCREG) ? (1 << 2) : 0); +} + +/* CC optimization */ + +/* Instead of computing the condition codes after each x86 instruction, + * QEMU just stores the result (called CC_DST), the type of operation + * (called CC_OP) and whatever operands are needed (CC_SRC and possibly + * CC_VR). When the condition codes are needed, the condition codes can + * be calculated using this information. Condition codes are not generated + * if they are only needed for conditional branches. + */ +enum cc_op { + CC_OP_CONST0 = 0, /* CC is 0 */ + CC_OP_CONST1, /* CC is 1 */ + CC_OP_CONST2, /* CC is 2 */ + CC_OP_CONST3, /* CC is 3 */ + + CC_OP_DYNAMIC, /* CC calculation defined by env->cc_op */ + CC_OP_STATIC, /* CC value is env->cc_op */ + + CC_OP_NZ, /* env->cc_dst != 0 */ + CC_OP_LTGT_32, /* signed less/greater than (32bit) */ + CC_OP_LTGT_64, /* signed less/greater than (64bit) */ + CC_OP_LTUGTU_32, /* unsigned less/greater than (32bit) */ + CC_OP_LTUGTU_64, /* unsigned less/greater than (64bit) */ + CC_OP_LTGT0_32, /* signed less/greater than 0 (32bit) */ + CC_OP_LTGT0_64, /* signed less/greater than 0 (64bit) */ + + CC_OP_ADD_64, /* overflow on add (64bit) */ + CC_OP_ADDU_64, /* overflow on unsigned add (64bit) */ + CC_OP_ADDC_64, /* overflow on unsigned add-carry (64bit) */ + CC_OP_SUB_64, /* overflow on subtraction (64bit) */ + CC_OP_SUBU_64, /* overflow on unsigned subtraction (64bit) */ + CC_OP_SUBB_64, /* overflow on unsigned sub-borrow (64bit) */ + CC_OP_ABS_64, /* sign eval on abs (64bit) */ + CC_OP_NABS_64, /* sign eval on nabs (64bit) */ + + CC_OP_ADD_32, /* overflow on add (32bit) */ + CC_OP_ADDU_32, /* overflow on unsigned add (32bit) */ + CC_OP_ADDC_32, /* overflow on unsigned add-carry (32bit) */ + CC_OP_SUB_32, /* overflow on subtraction (32bit) */ + CC_OP_SUBU_32, /* overflow on unsigned subtraction (32bit) */ + CC_OP_SUBB_32, /* overflow on unsigned sub-borrow (32bit) */ + CC_OP_ABS_32, /* sign eval on abs (64bit) */ + CC_OP_NABS_32, /* sign eval on nabs (64bit) */ + + CC_OP_COMP_32, /* complement */ + CC_OP_COMP_64, /* complement */ + + CC_OP_TM_32, /* test under mask (32bit) */ + CC_OP_TM_64, /* test under mask (64bit) */ + + CC_OP_NZ_F32, /* FP dst != 0 (32bit) */ + CC_OP_NZ_F64, /* FP dst != 0 (64bit) */ + CC_OP_NZ_F128, /* FP dst != 0 (128bit) */ + + CC_OP_ICM, /* insert characters under mask */ + CC_OP_SLA_32, /* Calculate shift left signed (32bit) */ + CC_OP_SLA_64, /* Calculate shift left signed (64bit) */ + CC_OP_FLOGR, /* find leftmost one */ + CC_OP_MAX +}; + +/* The value of the TOD clock for 1.1.1970. */ +#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL + +/* Converts ns to s390's clock format */ +static inline uint64_t time2tod(uint64_t ns) +{ + return (ns << 9) / 125; +} + +/* Converts s390's clock format to ns */ +static inline uint64_t tod2time(uint64_t t) +{ + return (t * 125) >> 9; +} + +static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb, + uint8_t *ar) +{ + hwaddr addr = 0; + uint8_t reg; + + reg = ipb >> 28; + if (reg > 0) { + addr = env->regs[reg]; + } + addr += (ipb >> 16) & 0xfff; + if (ar) { + *ar = reg; + } + + return addr; +} + +/* Base/displacement are at the same locations. */ +#define decode_basedisp_rs decode_basedisp_s + +static inline void s390_do_cpu_full_reset(CPUState *cs, run_on_cpu_data arg) +{ + cpu_reset(cs); +} + +static inline uint8_t s390_cpu_get_state(S390CPU *cpu) +{ + return cpu->env.cpu_state; +} + + +/* arch_dump.c */ +int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs, + int cpuid, void *opaque); + + +/* cc_helper.c */ +const char *cc_name(enum cc_op cc_op); +void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr); +uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst, + uint64_t vr); + + +/* cpu.c */ +#ifndef CONFIG_USER_ONLY +unsigned int s390_cpu_halt(S390CPU *cpu); +void s390_cpu_unhalt(S390CPU *cpu); +#else +static inline unsigned int s390_cpu_halt(S390CPU *cpu) +{ + return 0; +} + +static inline void s390_cpu_unhalt(S390CPU *cpu) +{ +} +#endif /* CONFIG_USER_ONLY */ + + +/* cpu_models.c */ +void s390_cpu_model_register_props(Object *obj); +void s390_cpu_model_class_register_props(ObjectClass *oc); +void s390_realize_cpu_model(CPUState *cs, Error **errp); +ObjectClass *s390_cpu_class_by_name(const char *name); + + +/* excp_helper.c */ +void s390x_cpu_debug_excp_handler(CPUState *cs); +void s390_cpu_do_interrupt(CPUState *cpu); +bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req); +int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, + int mmu_idx); +void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr, + MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr); + + +/* fpu_helper.c */ +uint32_t set_cc_nz_f32(float32 v); +uint32_t set_cc_nz_f64(float64 v); +uint32_t set_cc_nz_f128(float128 v); + + +/* gdbstub.c */ +int s390_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); +int s390_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); +void s390_cpu_gdb_init(CPUState *cs); + + +/* helper.c */ +void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, + int flags); +hwaddr s390_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); +hwaddr s390_cpu_get_phys_addr_debug(CPUState *cpu, vaddr addr); +uint64_t get_psw_mask(CPUS390XState *env); +void s390_cpu_recompute_watchpoints(CPUState *cs); +void s390x_tod_timer(void *opaque); +void s390x_cpu_timer(void *opaque); +S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp); +void do_restart_interrupt(CPUS390XState *env); +#ifndef CONFIG_USER_ONLY +LowCore *cpu_map_lowcore(CPUS390XState *env); +void cpu_unmap_lowcore(LowCore *lowcore); +#endif /* CONFIG_USER_ONLY */ + + +/* interrupt.c */ +void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen); +void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param, + uint64_t param64); + + +/* ioinst.c */ +void ioinst_handle_xsch(S390CPU *cpu, uint64_t reg1); +void ioinst_handle_csch(S390CPU *cpu, uint64_t reg1); +void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1); +void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb); +void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb); +void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb); +void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb); +int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb); +void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb); +int ioinst_handle_tpi(S390CPU *cpu, uint32_t ipb); +void ioinst_handle_schm(S390CPU *cpu, uint64_t reg1, uint64_t reg2, + uint32_t ipb); +void ioinst_handle_rsch(S390CPU *cpu, uint64_t reg1); +void ioinst_handle_rchp(S390CPU *cpu, uint64_t reg1); +void ioinst_handle_sal(S390CPU *cpu, uint64_t reg1); + + +/* mem_helper.c */ +target_ulong mmu_real2abs(CPUS390XState *env, target_ulong raddr); + + +/* mmu_helper.c */ +int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc, + target_ulong *raddr, int *flags, bool exc); + + +/* misc_helper.c */ +void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp, + uintptr_t retaddr); +int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3); +void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3); + + +/* translate.c */ +void s390x_translate_init(void); + +#endif /* S390X_INTERNAL_H */ |