target-s390x/cpu.h

   1 /*
   2  * S/390 virtual CPU header
   3  *
   4  *  Copyright (c) 2009 Ulrich Hecht
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * Contributions after 2012-10-29 are licensed under the terms of the
  17  * GNU GPL, version 2 or (at your option) any later version.
  18  *
  19  * You should have received a copy of the GNU (Lesser) General Public
  20  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22 #ifndef CPU_S390X_H
  23 #define CPU_S390X_H
  24
  25 #include "config.h"
  26 #include "qemu-common.h"
  27
  28 #define TARGET_LONG_BITS 64
  29
  30 #define ELF_MACHINE     EM_S390
  31 #define ELF_MACHINE_UNAME "S390X"
  32
  33 #define CPUArchState struct CPUS390XState
  34
  35 #include "exec/cpu-defs.h"
  36 #define TARGET_PAGE_BITS 12
  37
  38 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  39 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  40
  41 #include "exec/cpu-all.h"
  42
  43 #include "fpu/softfloat.h"
  44
  45 #define NB_MMU_MODES 3
  46
  47 #define MMU_MODE0_SUFFIX _primary
  48 #define MMU_MODE1_SUFFIX _secondary
  49 #define MMU_MODE2_SUFFIX _home
  50
  51 #define MMU_USER_IDX 1
  52
  53 #define MAX_EXT_QUEUE 16
  54 #define MAX_IO_QUEUE 16
  55 #define MAX_MCHK_QUEUE 16
  56
  57 #define PSW_MCHK_MASK 0x0004000000000000
  58 #define PSW_IO_MASK 0x0200000000000000
  59
  60 typedef struct PSW {
  61     uint64_t mask;
  62     uint64_t addr;
  63 } PSW;
  64
  65 typedef struct ExtQueue {
  66     uint32_t code;
  67     uint32_t param;
  68     uint32_t param64;
  69 } ExtQueue;
  70
  71 typedef struct IOIntQueue {
  72     uint16_t id;
  73     uint16_t nr;
  74     uint32_t parm;
  75     uint32_t word;
  76 } IOIntQueue;
  77
  78 typedef struct MchkQueue {
  79     uint16_t type;
  80 } MchkQueue;
  81
  82 typedef struct CPUS390XState {
  83     uint64_t regs[16];     /* GP registers */
  84     CPU_DoubleU fregs[16]; /* FP registers */
  85     uint32_t aregs[16];    /* access registers */
  86
  87     uint32_t fpc;          /* floating-point control register */
  88     uint32_t cc_op;
  89
  90     float_status fpu_status; /* passed to softfloat lib */
  91
  92     /* The low part of a 128-bit return, or remainder of a divide.  */
  93     uint64_t retxl;
  94
  95     PSW psw;
  96
  97     uint64_t cc_src;
  98     uint64_t cc_dst;
  99     uint64_t cc_vr;
 100
 101     uint64_t __excp_addr;
 102     uint64_t psa;
 103
 104     uint32_t int_pgm_code;
 105     uint32_t int_pgm_ilen;
 106
 107     uint32_t int_svc_code;
 108     uint32_t int_svc_ilen;
 109
 110     uint64_t cregs[16]; /* control registers */
 111
 112     ExtQueue ext_queue[MAX_EXT_QUEUE];
 113     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 114     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 115
 116     int pending_int;
 117     int ext_index;
 118     int io_index[8];
 119     int mchk_index;
 120
 121     uint64_t ckc;
 122     uint64_t cputm;
 123     uint32_t todpr;
 124
 125     uint64_t pfault_token;
 126     uint64_t pfault_compare;
 127     uint64_t pfault_select;
 128
 129     uint64_t gbea;
 130     uint64_t pp;
 131
 132     CPU_COMMON
 133
 134     /* reset does memset(0) up to here */
 135
 136     int cpu_num;
 137     uint8_t *storage_keys;
 138
 139     uint64_t tod_offset;
 140     uint64_t tod_basetime;
 141     QEMUTimer *tod_timer;
 142
 143     QEMUTimer *cpu_timer;
 144 } CPUS390XState;
 145
 146 #include "cpu-qom.h"
 147 #include <sysemu/kvm.h>
 148
 149 /* distinguish between 24 bit and 31 bit addressing */
 150 #define HIGH_ORDER_BIT 0x80000000
 151
 152 /* Interrupt Codes */
 153 /* Program Interrupts */
 154 #define PGM_OPERATION                   0x0001
 155 #define PGM_PRIVILEGED                  0x0002
 156 #define PGM_EXECUTE                     0x0003
 157 #define PGM_PROTECTION                  0x0004
 158 #define PGM_ADDRESSING                  0x0005
 159 #define PGM_SPECIFICATION               0x0006
 160 #define PGM_DATA                        0x0007
 161 #define PGM_FIXPT_OVERFLOW              0x0008
 162 #define PGM_FIXPT_DIVIDE                0x0009
 163 #define PGM_DEC_OVERFLOW                0x000a
 164 #define PGM_DEC_DIVIDE                  0x000b
 165 #define PGM_HFP_EXP_OVERFLOW            0x000c
 166 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 167 #define PGM_HFP_SIGNIFICANCE            0x000e
 168 #define PGM_HFP_DIVIDE                  0x000f
 169 #define PGM_SEGMENT_TRANS               0x0010
 170 #define PGM_PAGE_TRANS                  0x0011
 171 #define PGM_TRANS_SPEC                  0x0012
 172 #define PGM_SPECIAL_OP                  0x0013
 173 #define PGM_OPERAND                     0x0015
 174 #define PGM_TRACE_TABLE                 0x0016
 175 #define PGM_SPACE_SWITCH                0x001c
 176 #define PGM_HFP_SQRT                    0x001d
 177 #define PGM_PC_TRANS_SPEC               0x001f
 178 #define PGM_AFX_TRANS                   0x0020
 179 #define PGM_ASX_TRANS                   0x0021
 180 #define PGM_LX_TRANS                    0x0022
 181 #define PGM_EX_TRANS                    0x0023
 182 #define PGM_PRIM_AUTH                   0x0024
 183 #define PGM_SEC_AUTH                    0x0025
 184 #define PGM_ALET_SPEC                   0x0028
 185 #define PGM_ALEN_SPEC                   0x0029
 186 #define PGM_ALE_SEQ                     0x002a
 187 #define PGM_ASTE_VALID                  0x002b
 188 #define PGM_ASTE_SEQ                    0x002c
 189 #define PGM_EXT_AUTH                    0x002d
 190 #define PGM_STACK_FULL                  0x0030
 191 #define PGM_STACK_EMPTY                 0x0031
 192 #define PGM_STACK_SPEC                  0x0032
 193 #define PGM_STACK_TYPE                  0x0033
 194 #define PGM_STACK_OP                    0x0034
 195 #define PGM_ASCE_TYPE                   0x0038
 196 #define PGM_REG_FIRST_TRANS             0x0039
 197 #define PGM_REG_SEC_TRANS               0x003a
 198 #define PGM_REG_THIRD_TRANS             0x003b
 199 #define PGM_MONITOR                     0x0040
 200 #define PGM_PER                         0x0080
 201 #define PGM_CRYPTO                      0x0119
 202
 203 /* External Interrupts */
 204 #define EXT_INTERRUPT_KEY               0x0040
 205 #define EXT_CLOCK_COMP                  0x1004
 206 #define EXT_CPU_TIMER                   0x1005
 207 #define EXT_MALFUNCTION                 0x1200
 208 #define EXT_EMERGENCY                   0x1201
 209 #define EXT_EXTERNAL_CALL               0x1202
 210 #define EXT_ETR                         0x1406
 211 #define EXT_SERVICE                     0x2401
 212 #define EXT_VIRTIO                      0x2603
 213
 214 /* PSW defines */
 215 #undef PSW_MASK_PER
 216 #undef PSW_MASK_DAT
 217 #undef PSW_MASK_IO
 218 #undef PSW_MASK_EXT
 219 #undef PSW_MASK_KEY
 220 #undef PSW_SHIFT_KEY
 221 #undef PSW_MASK_MCHECK
 222 #undef PSW_MASK_WAIT
 223 #undef PSW_MASK_PSTATE
 224 #undef PSW_MASK_ASC
 225 #undef PSW_MASK_CC
 226 #undef PSW_MASK_PM
 227 #undef PSW_MASK_64
 228 #undef PSW_MASK_32
 229 #undef PSW_MASK_ESA_ADDR
 230
 231 #define PSW_MASK_PER            0x4000000000000000ULL
 232 #define PSW_MASK_DAT            0x0400000000000000ULL
 233 #define PSW_MASK_IO             0x0200000000000000ULL
 234 #define PSW_MASK_EXT            0x0100000000000000ULL
 235 #define PSW_MASK_KEY            0x00F0000000000000ULL
 236 #define PSW_SHIFT_KEY           56
 237 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 238 #define PSW_MASK_WAIT           0x0002000000000000ULL
 239 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 240 #define PSW_MASK_ASC            0x0000C00000000000ULL
 241 #define PSW_MASK_CC             0x0000300000000000ULL
 242 #define PSW_MASK_PM             0x00000F0000000000ULL
 243 #define PSW_MASK_64             0x0000000100000000ULL
 244 #define PSW_MASK_32             0x0000000080000000ULL
 245 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 246
 247 #undef PSW_ASC_PRIMARY
 248 #undef PSW_ASC_ACCREG
 249 #undef PSW_ASC_SECONDARY
 250 #undef PSW_ASC_HOME
 251
 252 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 253 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 254 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 255 #define PSW_ASC_HOME            0x0000C00000000000ULL
 256
 257 /* tb flags */
 258
 259 #define FLAG_MASK_PER           (PSW_MASK_PER    >> 32)
 260 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> 32)
 261 #define FLAG_MASK_IO            (PSW_MASK_IO     >> 32)
 262 #define FLAG_MASK_EXT           (PSW_MASK_EXT    >> 32)
 263 #define FLAG_MASK_KEY           (PSW_MASK_KEY    >> 32)
 264 #define FLAG_MASK_MCHECK        (PSW_MASK_MCHECK >> 32)
 265 #define FLAG_MASK_WAIT          (PSW_MASK_WAIT   >> 32)
 266 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> 32)
 267 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> 32)
 268 #define FLAG_MASK_CC            (PSW_MASK_CC     >> 32)
 269 #define FLAG_MASK_PM            (PSW_MASK_PM     >> 32)
 270 #define FLAG_MASK_64            (PSW_MASK_64     >> 32)
 271 #define FLAG_MASK_32            0x00001000
 272
 273 /* Control register 0 bits */
 274 #define CR0_EDAT                0x0000000000800000ULL
 275
 276 static inline int cpu_mmu_index (CPUS390XState *env)
 277 {
 278     if (env->psw.mask & PSW_MASK_PSTATE) {
 279         return 1;
 280     }
 281
 282     return 0;
 283 }
 284
 285 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 286                                         target_ulong *cs_base, int *flags)
 287 {
 288     *pc = env->psw.addr;
 289     *cs_base = 0;
 290     *flags = ((env->psw.mask >> 32) & ~FLAG_MASK_CC) |
 291              ((env->psw.mask & PSW_MASK_32) ? FLAG_MASK_32 : 0);
 292 }
 293
 294 /* While the PoO talks about ILC (a number between 1-3) what is actually
 295    stored in LowCore is shifted left one bit (an even between 2-6).  As
 296    this is the actual length of the insn and therefore more useful, that
 297    is what we want to pass around and manipulate.  To make sure that we
 298    have applied this distinction universally, rename the "ILC" to "ILEN".  */
 299 static inline int get_ilen(uint8_t opc)
 300 {
 301     switch (opc >> 6) {
 302     case 0:
 303         return 2;
 304     case 1:
 305     case 2:
 306         return 4;
 307     default:
 308         return 6;
 309     }
 310 }
 311
 312 #ifndef CONFIG_USER_ONLY
 313 /* In several cases of runtime exceptions, we havn't recorded the true
 314    instruction length.  Use these codes when raising exceptions in order
 315    to re-compute the length by examining the insn in memory.  */
 316 #define ILEN_LATER       0x20
 317 #define ILEN_LATER_INC   0x21
 318 #endif
 319
 320 S390CPU *cpu_s390x_init(const char *cpu_model);
 321 void s390x_translate_init(void);
 322 int cpu_s390x_exec(CPUS390XState *s);
 323
 324 /* you can call this signal handler from your SIGBUS and SIGSEGV
 325    signal handlers to inform the virtual CPU of exceptions. non zero
 326    is returned if the signal was handled by the virtual CPU.  */
 327 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
 328                            void *puc);
 329 int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 330                               int mmu_idx);
 331
 332 #include "ioinst.h"
 333
 334 #ifndef CONFIG_USER_ONLY
 335 void *s390_cpu_physical_memory_map(CPUS390XState *env, hwaddr addr, hwaddr *len,
 336                                    int is_write);
 337 void s390_cpu_physical_memory_unmap(CPUS390XState *env, void *addr, hwaddr len,
 338                                     int is_write);
 339 static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb)
 340 {
 341     hwaddr addr = 0;
 342     uint8_t reg;
 343
 344     reg = ipb >> 28;
 345     if (reg > 0) {
 346         addr = env->regs[reg];
 347     }
 348     addr += (ipb >> 16) & 0xfff;
 349
 350     return addr;
 351 }
 352
 353 /* Base/displacement are at the same locations. */
 354 #define decode_basedisp_rs decode_basedisp_s
 355
 356 void s390x_tod_timer(void *opaque);
 357 void s390x_cpu_timer(void *opaque);
 358
 359 int s390_virtio_hypercall(CPUS390XState *env);
 360 void s390_virtio_irq(int config_change, uint64_t token);
 361
 362 #ifdef CONFIG_KVM
 363 void kvm_s390_reset_vcpu(S390CPU *cpu);
 364 void kvm_s390_virtio_irq(int config_change, uint64_t token);
 365 void kvm_s390_service_interrupt(uint32_t parm);
 366 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
 367 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq);
 368 int kvm_s390_inject_flic(struct kvm_s390_irq *irq);
 369 #else
 370 static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
 371 {
 372 }
 373 static inline void kvm_s390_virtio_irq(int config_change, uint64_t token)
 374 {
 375 }
 376 static inline void kvm_s390_service_interrupt(uint32_t parm)
 377 {
 378 }
 379 #endif
 380 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 381 void s390_add_running_cpu(S390CPU *cpu);
 382 unsigned s390_del_running_cpu(S390CPU *cpu);
 383
 384 /* service interrupts are floating therefore we must not pass an cpustate */
 385 void s390_sclp_extint(uint32_t parm);
 386
 387 /* from s390-virtio-bus */
 388 extern const hwaddr virtio_size;
 389
 390 #else
 391 static inline void s390_add_running_cpu(S390CPU *cpu)
 392 {
 393 }
 394
 395 static inline unsigned s390_del_running_cpu(S390CPU *cpu)
 396 {
 397     return 0;
 398 }
 399 #endif
 400 void cpu_lock(void);
 401 void cpu_unlock(void);
 402
 403 typedef struct SubchDev SubchDev;
 404
 405 #ifndef CONFIG_USER_ONLY
 406 extern void io_subsystem_reset(void);
 407 SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
 408                          uint16_t schid);
 409 bool css_subch_visible(SubchDev *sch);
 410 void css_conditional_io_interrupt(SubchDev *sch);
 411 int css_do_stsch(SubchDev *sch, SCHIB *schib);
 412 bool css_schid_final(int m, uint8_t cssid, uint8_t ssid, uint16_t schid);
 413 int css_do_msch(SubchDev *sch, SCHIB *schib);
 414 int css_do_xsch(SubchDev *sch);
 415 int css_do_csch(SubchDev *sch);
 416 int css_do_hsch(SubchDev *sch);
 417 int css_do_ssch(SubchDev *sch, ORB *orb);
 418 int css_do_tsch(SubchDev *sch, IRB *irb);
 419 int css_do_stcrw(CRW *crw);
 420 int css_do_tpi(IOIntCode *int_code, int lowcore);
 421 int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid, uint8_t l_chpid,
 422                          int rfmt, void *buf);
 423 void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo);
 424 int css_enable_mcsse(void);
 425 int css_enable_mss(void);
 426 int css_do_rsch(SubchDev *sch);
 427 int css_do_rchp(uint8_t cssid, uint8_t chpid);
 428 bool css_present(uint8_t cssid);
 429 #else
 430 static inline SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
 431                                        uint16_t schid)
 432 {
 433     return NULL;
 434 }
 435 static inline bool css_subch_visible(SubchDev *sch)
 436 {
 437     return false;
 438 }
 439 static inline void css_conditional_io_interrupt(SubchDev *sch)
 440 {
 441 }
 442 static inline int css_do_stsch(SubchDev *sch, SCHIB *schib)
 443 {
 444     return -ENODEV;
 445 }
 446 static inline bool css_schid_final(uint8_t cssid, uint8_t ssid, uint16_t schid)
 447 {
 448     return true;
 449 }
 450 static inline int css_do_msch(SubchDev *sch, SCHIB *schib)
 451 {
 452     return -ENODEV;
 453 }
 454 static inline int css_do_xsch(SubchDev *sch)
 455 {
 456     return -ENODEV;
 457 }
 458 static inline int css_do_csch(SubchDev *sch)
 459 {
 460     return -ENODEV;
 461 }
 462 static inline int css_do_hsch(SubchDev *sch)
 463 {
 464     return -ENODEV;
 465 }
 466 static inline int css_do_ssch(SubchDev *sch, ORB *orb)
 467 {
 468     return -ENODEV;
 469 }
 470 static inline int css_do_tsch(SubchDev *sch, IRB *irb)
 471 {
 472     return -ENODEV;
 473 }
 474 static inline int css_do_stcrw(CRW *crw)
 475 {
 476     return 1;
 477 }
 478 static inline int css_do_tpi(IOIntCode *int_code, int lowcore)
 479 {
 480     return 0;
 481 }
 482 static inline int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid,
 483                                        int rfmt, uint8_t l_chpid, void *buf)
 484 {
 485     return 0;
 486 }
 487 static inline void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo)
 488 {
 489 }
 490 static inline int css_enable_mss(void)
 491 {
 492     return -EINVAL;
 493 }
 494 static inline int css_enable_mcsse(void)
 495 {
 496     return -EINVAL;
 497 }
 498 static inline int css_do_rsch(SubchDev *sch)
 499 {
 500     return -ENODEV;
 501 }
 502 static inline int css_do_rchp(uint8_t cssid, uint8_t chpid)
 503 {
 504     return -ENODEV;
 505 }
 506 static inline bool css_present(uint8_t cssid)
 507 {
 508     return false;
 509 }
 510 #endif
 511
 512 #define cpu_init(model) (&cpu_s390x_init(model)->env)
 513 #define cpu_exec cpu_s390x_exec
 514 #define cpu_gen_code cpu_s390x_gen_code
 515 #define cpu_signal_handler cpu_s390x_signal_handler
 516
 517 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 518 #define cpu_list s390_cpu_list
 519
 520 #include "exec/exec-all.h"
 521
 522 #define EXCP_EXT 1 /* external interrupt */
 523 #define EXCP_SVC 2 /* supervisor call (syscall) */
 524 #define EXCP_PGM 3 /* program interruption */
 525 #define EXCP_IO  7 /* I/O interrupt */
 526 #define EXCP_MCHK 8 /* machine check */
 527
 528 #define INTERRUPT_EXT        (1 << 0)
 529 #define INTERRUPT_TOD        (1 << 1)
 530 #define INTERRUPT_CPUTIMER   (1 << 2)
 531 #define INTERRUPT_IO         (1 << 3)
 532 #define INTERRUPT_MCHK       (1 << 4)
 533
 534 /* Program Status Word.  */
 535 #define S390_PSWM_REGNUM 0
 536 #define S390_PSWA_REGNUM 1
 537 /* General Purpose Registers.  */
 538 #define S390_R0_REGNUM 2
 539 #define S390_R1_REGNUM 3
 540 #define S390_R2_REGNUM 4
 541 #define S390_R3_REGNUM 5
 542 #define S390_R4_REGNUM 6
 543 #define S390_R5_REGNUM 7
 544 #define S390_R6_REGNUM 8
 545 #define S390_R7_REGNUM 9
 546 #define S390_R8_REGNUM 10
 547 #define S390_R9_REGNUM 11
 548 #define S390_R10_REGNUM 12
 549 #define S390_R11_REGNUM 13
 550 #define S390_R12_REGNUM 14
 551 #define S390_R13_REGNUM 15
 552 #define S390_R14_REGNUM 16
 553 #define S390_R15_REGNUM 17
 554 /* Access Registers.  */
 555 #define S390_A0_REGNUM 18
 556 #define S390_A1_REGNUM 19
 557 #define S390_A2_REGNUM 20
 558 #define S390_A3_REGNUM 21
 559 #define S390_A4_REGNUM 22
 560 #define S390_A5_REGNUM 23
 561 #define S390_A6_REGNUM 24
 562 #define S390_A7_REGNUM 25
 563 #define S390_A8_REGNUM 26
 564 #define S390_A9_REGNUM 27
 565 #define S390_A10_REGNUM 28
 566 #define S390_A11_REGNUM 29
 567 #define S390_A12_REGNUM 30
 568 #define S390_A13_REGNUM 31
 569 #define S390_A14_REGNUM 32
 570 #define S390_A15_REGNUM 33
 571 /* Floating Point Control Word.  */
 572 #define S390_FPC_REGNUM 34
 573 /* Floating Point Registers.  */
 574 #define S390_F0_REGNUM 35
 575 #define S390_F1_REGNUM 36
 576 #define S390_F2_REGNUM 37
 577 #define S390_F3_REGNUM 38
 578 #define S390_F4_REGNUM 39
 579 #define S390_F5_REGNUM 40
 580 #define S390_F6_REGNUM 41
 581 #define S390_F7_REGNUM 42
 582 #define S390_F8_REGNUM 43
 583 #define S390_F9_REGNUM 44
 584 #define S390_F10_REGNUM 45
 585 #define S390_F11_REGNUM 46
 586 #define S390_F12_REGNUM 47
 587 #define S390_F13_REGNUM 48
 588 #define S390_F14_REGNUM 49
 589 #define S390_F15_REGNUM 50
 590 /* Total.  */
 591 #define S390_NUM_REGS 51
 592
 593 /* CC optimization */
 594
 595 enum cc_op {
 596     CC_OP_CONST0 = 0,           /* CC is 0 */
 597     CC_OP_CONST1,               /* CC is 1 */
 598     CC_OP_CONST2,               /* CC is 2 */
 599     CC_OP_CONST3,               /* CC is 3 */
 600
 601     CC_OP_DYNAMIC,              /* CC calculation defined by env->cc_op */
 602     CC_OP_STATIC,               /* CC value is env->cc_op */
 603
 604     CC_OP_NZ,                   /* env->cc_dst != 0 */
 605     CC_OP_LTGT_32,              /* signed less/greater than (32bit) */
 606     CC_OP_LTGT_64,              /* signed less/greater than (64bit) */
 607     CC_OP_LTUGTU_32,            /* unsigned less/greater than (32bit) */
 608     CC_OP_LTUGTU_64,            /* unsigned less/greater than (64bit) */
 609     CC_OP_LTGT0_32,             /* signed less/greater than 0 (32bit) */
 610     CC_OP_LTGT0_64,             /* signed less/greater than 0 (64bit) */
 611
 612     CC_OP_ADD_64,               /* overflow on add (64bit) */
 613     CC_OP_ADDU_64,              /* overflow on unsigned add (64bit) */
 614     CC_OP_ADDC_64,              /* overflow on unsigned add-carry (64bit) */
 615     CC_OP_SUB_64,               /* overflow on subtraction (64bit) */
 616     CC_OP_SUBU_64,              /* overflow on unsigned subtraction (64bit) */
 617     CC_OP_SUBB_64,              /* overflow on unsigned sub-borrow (64bit) */
 618     CC_OP_ABS_64,               /* sign eval on abs (64bit) */
 619     CC_OP_NABS_64,              /* sign eval on nabs (64bit) */
 620
 621     CC_OP_ADD_32,               /* overflow on add (32bit) */
 622     CC_OP_ADDU_32,              /* overflow on unsigned add (32bit) */
 623     CC_OP_ADDC_32,              /* overflow on unsigned add-carry (32bit) */
 624     CC_OP_SUB_32,               /* overflow on subtraction (32bit) */
 625     CC_OP_SUBU_32,              /* overflow on unsigned subtraction (32bit) */
 626     CC_OP_SUBB_32,              /* overflow on unsigned sub-borrow (32bit) */
 627     CC_OP_ABS_32,               /* sign eval on abs (64bit) */
 628     CC_OP_NABS_32,              /* sign eval on nabs (64bit) */
 629
 630     CC_OP_COMP_32,              /* complement */
 631     CC_OP_COMP_64,              /* complement */
 632
 633     CC_OP_TM_32,                /* test under mask (32bit) */
 634     CC_OP_TM_64,                /* test under mask (64bit) */
 635
 636     CC_OP_NZ_F32,               /* FP dst != 0 (32bit) */
 637     CC_OP_NZ_F64,               /* FP dst != 0 (64bit) */
 638     CC_OP_NZ_F128,              /* FP dst != 0 (128bit) */
 639
 640     CC_OP_ICM,                  /* insert characters under mask */
 641     CC_OP_SLA_32,               /* Calculate shift left signed (32bit) */
 642     CC_OP_SLA_64,               /* Calculate shift left signed (64bit) */
 643     CC_OP_FLOGR,                /* find leftmost one */
 644     CC_OP_MAX
 645 };
 646
 647 static const char *cc_names[] = {
 648     [CC_OP_CONST0]    = "CC_OP_CONST0",
 649     [CC_OP_CONST1]    = "CC_OP_CONST1",
 650     [CC_OP_CONST2]    = "CC_OP_CONST2",
 651     [CC_OP_CONST3]    = "CC_OP_CONST3",
 652     [CC_OP_DYNAMIC]   = "CC_OP_DYNAMIC",
 653     [CC_OP_STATIC]    = "CC_OP_STATIC",
 654     [CC_OP_NZ]        = "CC_OP_NZ",
 655     [CC_OP_LTGT_32]   = "CC_OP_LTGT_32",
 656     [CC_OP_LTGT_64]   = "CC_OP_LTGT_64",
 657     [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
 658     [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
 659     [CC_OP_LTGT0_32]  = "CC_OP_LTGT0_32",
 660     [CC_OP_LTGT0_64]  = "CC_OP_LTGT0_64",
 661     [CC_OP_ADD_64]    = "CC_OP_ADD_64",
 662     [CC_OP_ADDU_64]   = "CC_OP_ADDU_64",
 663     [CC_OP_ADDC_64]   = "CC_OP_ADDC_64",
 664     [CC_OP_SUB_64]    = "CC_OP_SUB_64",
 665     [CC_OP_SUBU_64]   = "CC_OP_SUBU_64",
 666     [CC_OP_SUBB_64]   = "CC_OP_SUBB_64",
 667     [CC_OP_ABS_64]    = "CC_OP_ABS_64",
 668     [CC_OP_NABS_64]   = "CC_OP_NABS_64",
 669     [CC_OP_ADD_32]    = "CC_OP_ADD_32",
 670     [CC_OP_ADDU_32]   = "CC_OP_ADDU_32",
 671     [CC_OP_ADDC_32]   = "CC_OP_ADDC_32",
 672     [CC_OP_SUB_32]    = "CC_OP_SUB_32",
 673     [CC_OP_SUBU_32]   = "CC_OP_SUBU_32",
 674     [CC_OP_SUBB_32]   = "CC_OP_SUBB_32",
 675     [CC_OP_ABS_32]    = "CC_OP_ABS_32",
 676     [CC_OP_NABS_32]   = "CC_OP_NABS_32",
 677     [CC_OP_COMP_32]   = "CC_OP_COMP_32",
 678     [CC_OP_COMP_64]   = "CC_OP_COMP_64",
 679     [CC_OP_TM_32]     = "CC_OP_TM_32",
 680     [CC_OP_TM_64]     = "CC_OP_TM_64",
 681     [CC_OP_NZ_F32]    = "CC_OP_NZ_F32",
 682     [CC_OP_NZ_F64]    = "CC_OP_NZ_F64",
 683     [CC_OP_NZ_F128]   = "CC_OP_NZ_F128",
 684     [CC_OP_ICM]       = "CC_OP_ICM",
 685     [CC_OP_SLA_32]    = "CC_OP_SLA_32",
 686     [CC_OP_SLA_64]    = "CC_OP_SLA_64",
 687     [CC_OP_FLOGR]     = "CC_OP_FLOGR",
 688 };
 689
 690 static inline const char *cc_name(int cc_op)
 691 {
 692     return cc_names[cc_op];
 693 }
 694
 695 static inline void setcc(S390CPU *cpu, uint64_t cc)
 696 {
 697     CPUS390XState *env = &cpu->env;
 698
 699     env->psw.mask &= ~(3ull << 44);
 700     env->psw.mask |= (cc & 3) << 44;
 701 }
 702
 703 typedef struct LowCore
 704 {
 705     /* prefix area: defined by architecture */
 706     uint32_t        ccw1[2];                  /* 0x000 */
 707     uint32_t        ccw2[4];                  /* 0x008 */
 708     uint8_t         pad1[0x80-0x18];          /* 0x018 */
 709     uint32_t        ext_params;               /* 0x080 */
 710     uint16_t        cpu_addr;                 /* 0x084 */
 711     uint16_t        ext_int_code;             /* 0x086 */
 712     uint16_t        svc_ilen;                 /* 0x088 */
 713     uint16_t        svc_code;                 /* 0x08a */
 714     uint16_t        pgm_ilen;                 /* 0x08c */
 715     uint16_t        pgm_code;                 /* 0x08e */
 716     uint32_t        data_exc_code;            /* 0x090 */
 717     uint16_t        mon_class_num;            /* 0x094 */
 718     uint16_t        per_perc_atmid;           /* 0x096 */
 719     uint64_t        per_address;              /* 0x098 */
 720     uint8_t         exc_access_id;            /* 0x0a0 */
 721     uint8_t         per_access_id;            /* 0x0a1 */
 722     uint8_t         op_access_id;             /* 0x0a2 */
 723     uint8_t         ar_access_id;             /* 0x0a3 */
 724     uint8_t         pad2[0xA8-0xA4];          /* 0x0a4 */
 725     uint64_t        trans_exc_code;           /* 0x0a8 */
 726     uint64_t        monitor_code;             /* 0x0b0 */
 727     uint16_t        subchannel_id;            /* 0x0b8 */
 728     uint16_t        subchannel_nr;            /* 0x0ba */
 729     uint32_t        io_int_parm;              /* 0x0bc */
 730     uint32_t        io_int_word;              /* 0x0c0 */
 731     uint8_t         pad3[0xc8-0xc4];          /* 0x0c4 */
 732     uint32_t        stfl_fac_list;            /* 0x0c8 */
 733     uint8_t         pad4[0xe8-0xcc];          /* 0x0cc */
 734     uint32_t        mcck_interruption_code[2]; /* 0x0e8 */
 735     uint8_t         pad5[0xf4-0xf0];          /* 0x0f0 */
 736     uint32_t        external_damage_code;     /* 0x0f4 */
 737     uint64_t        failing_storage_address;  /* 0x0f8 */
 738     uint8_t         pad6[0x120-0x100];        /* 0x100 */
 739     PSW             restart_old_psw;          /* 0x120 */
 740     PSW             external_old_psw;         /* 0x130 */
 741     PSW             svc_old_psw;              /* 0x140 */
 742     PSW             program_old_psw;          /* 0x150 */
 743     PSW             mcck_old_psw;             /* 0x160 */
 744     PSW             io_old_psw;               /* 0x170 */
 745     uint8_t         pad7[0x1a0-0x180];        /* 0x180 */
 746     PSW             restart_psw;              /* 0x1a0 */
 747     PSW             external_new_psw;         /* 0x1b0 */
 748     PSW             svc_new_psw;              /* 0x1c0 */
 749     PSW             program_new_psw;          /* 0x1d0 */
 750     PSW             mcck_new_psw;             /* 0x1e0 */
 751     PSW             io_new_psw;               /* 0x1f0 */
 752     PSW             return_psw;               /* 0x200 */
 753     uint8_t         irb[64];                  /* 0x210 */
 754     uint64_t        sync_enter_timer;         /* 0x250 */
 755     uint64_t        async_enter_timer;        /* 0x258 */
 756     uint64_t        exit_timer;               /* 0x260 */
 757     uint64_t        last_update_timer;        /* 0x268 */
 758     uint64_t        user_timer;               /* 0x270 */
 759     uint64_t        system_timer;             /* 0x278 */
 760     uint64_t        last_update_clock;        /* 0x280 */
 761     uint64_t        steal_clock;              /* 0x288 */
 762     PSW             return_mcck_psw;          /* 0x290 */
 763     uint8_t         pad8[0xc00-0x2a0];        /* 0x2a0 */
 764     /* System info area */
 765     uint64_t        save_area[16];            /* 0xc00 */
 766     uint8_t         pad9[0xd40-0xc80];        /* 0xc80 */
 767     uint64_t        kernel_stack;             /* 0xd40 */
 768     uint64_t        thread_info;              /* 0xd48 */
 769     uint64_t        async_stack;              /* 0xd50 */
 770     uint64_t        kernel_asce;              /* 0xd58 */
 771     uint64_t        user_asce;                /* 0xd60 */
 772     uint64_t        panic_stack;              /* 0xd68 */
 773     uint64_t        user_exec_asce;           /* 0xd70 */
 774     uint8_t         pad10[0xdc0-0xd78];       /* 0xd78 */
 775
 776     /* SMP info area: defined by DJB */
 777     uint64_t        clock_comparator;         /* 0xdc0 */
 778     uint64_t        ext_call_fast;            /* 0xdc8 */
 779     uint64_t        percpu_offset;            /* 0xdd0 */
 780     uint64_t        current_task;             /* 0xdd8 */
 781     uint32_t        softirq_pending;          /* 0xde0 */
 782     uint32_t        pad_0x0de4;               /* 0xde4 */
 783     uint64_t        int_clock;                /* 0xde8 */
 784     uint8_t         pad12[0xe00-0xdf0];       /* 0xdf0 */
 785
 786     /* 0xe00 is used as indicator for dump tools */
 787     /* whether the kernel died with panic() or not */
 788     uint32_t        panic_magic;              /* 0xe00 */
 789
 790     uint8_t         pad13[0x11b8-0xe04];      /* 0xe04 */
 791
 792     /* 64 bit extparam used for pfault, diag 250 etc  */
 793     uint64_t        ext_params2;               /* 0x11B8 */
 794
 795     uint8_t         pad14[0x1200-0x11C0];      /* 0x11C0 */
 796
 797     /* System info area */
 798
 799     uint64_t        floating_pt_save_area[16]; /* 0x1200 */
 800     uint64_t        gpregs_save_area[16];      /* 0x1280 */
 801     uint32_t        st_status_fixed_logout[4]; /* 0x1300 */
 802     uint8_t         pad15[0x1318-0x1310];      /* 0x1310 */
 803     uint32_t        prefixreg_save_area;       /* 0x1318 */
 804     uint32_t        fpt_creg_save_area;        /* 0x131c */
 805     uint8_t         pad16[0x1324-0x1320];      /* 0x1320 */
 806     uint32_t        tod_progreg_save_area;     /* 0x1324 */
 807     uint32_t        cpu_timer_save_area[2];    /* 0x1328 */
 808     uint32_t        clock_comp_save_area[2];   /* 0x1330 */
 809     uint8_t         pad17[0x1340-0x1338];      /* 0x1338 */
 810     uint32_t        access_regs_save_area[16]; /* 0x1340 */
 811     uint64_t        cregs_save_area[16];       /* 0x1380 */
 812
 813     /* align to the top of the prefix area */
 814
 815     uint8_t         pad18[0x2000-0x1400];      /* 0x1400 */
 816 } QEMU_PACKED LowCore;
 817
 818 /* STSI */
 819 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 820 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 821 #define STSI_LEVEL_1            0x0000000010000000ULL
 822 #define STSI_LEVEL_2            0x0000000020000000ULL
 823 #define STSI_LEVEL_3            0x0000000030000000ULL
 824 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 825 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 826 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 827 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 828
 829 /* Basic Machine Configuration */
 830 struct sysib_111 {
 831     uint32_t res1[8];
 832     uint8_t  manuf[16];
 833     uint8_t  type[4];
 834     uint8_t  res2[12];
 835     uint8_t  model[16];
 836     uint8_t  sequence[16];
 837     uint8_t  plant[4];
 838     uint8_t  res3[156];
 839 };
 840
 841 /* Basic Machine CPU */
 842 struct sysib_121 {
 843     uint32_t res1[80];
 844     uint8_t  sequence[16];
 845     uint8_t  plant[4];
 846     uint8_t  res2[2];
 847     uint16_t cpu_addr;
 848     uint8_t  res3[152];
 849 };
 850
 851 /* Basic Machine CPUs */
 852 struct sysib_122 {
 853     uint8_t res1[32];
 854     uint32_t capability;
 855     uint16_t total_cpus;
 856     uint16_t active_cpus;
 857     uint16_t standby_cpus;
 858     uint16_t reserved_cpus;
 859     uint16_t adjustments[2026];
 860 };
 861
 862 /* LPAR CPU */
 863 struct sysib_221 {
 864     uint32_t res1[80];
 865     uint8_t  sequence[16];
 866     uint8_t  plant[4];
 867     uint16_t cpu_id;
 868     uint16_t cpu_addr;
 869     uint8_t  res3[152];
 870 };
 871
 872 /* LPAR CPUs */
 873 struct sysib_222 {
 874     uint32_t res1[32];
 875     uint16_t lpar_num;
 876     uint8_t  res2;
 877     uint8_t  lcpuc;
 878     uint16_t total_cpus;
 879     uint16_t conf_cpus;
 880     uint16_t standby_cpus;
 881     uint16_t reserved_cpus;
 882     uint8_t  name[8];
 883     uint32_t caf;
 884     uint8_t  res3[16];
 885     uint16_t dedicated_cpus;
 886     uint16_t shared_cpus;
 887     uint8_t  res4[180];
 888 };
 889
 890 /* VM CPUs */
 891 struct sysib_322 {
 892     uint8_t  res1[31];
 893     uint8_t  count;
 894     struct {
 895         uint8_t  res2[4];
 896         uint16_t total_cpus;
 897         uint16_t conf_cpus;
 898         uint16_t standby_cpus;
 899         uint16_t reserved_cpus;
 900         uint8_t  name[8];
 901         uint32_t caf;
 902         uint8_t  cpi[16];
 903         uint8_t  res3[24];
 904     } vm[8];
 905     uint8_t res4[3552];
 906 };
 907
 908 /* MMU defines */
 909 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
 910 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
 911 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
 912 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
 913 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
 914 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
 915 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
 916 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
 917 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
 918 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
 919 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
 920 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
 921
 922 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
 923 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
 924 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
 925 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
 926 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
 927 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
 928 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
 929
 930 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
 931 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
 932 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
 933 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
 934
 935 #define _PAGE_RO        0x200            /* HW read-only bit  */
 936 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
 937
 938 #define SK_C                    (0x1 << 1)
 939 #define SK_R                    (0x1 << 2)
 940 #define SK_F                    (0x1 << 3)
 941 #define SK_ACC_MASK             (0xf << 4)
 942
 943 #define SIGP_SENSE             0x01
 944 #define SIGP_EXTERNAL_CALL     0x02
 945 #define SIGP_EMERGENCY         0x03
 946 #define SIGP_START             0x04
 947 #define SIGP_STOP              0x05
 948 #define SIGP_RESTART           0x06
 949 #define SIGP_STOP_STORE_STATUS 0x09
 950 #define SIGP_INITIAL_CPU_RESET 0x0b
 951 #define SIGP_CPU_RESET         0x0c
 952 #define SIGP_SET_PREFIX        0x0d
 953 #define SIGP_STORE_STATUS_ADDR 0x0e
 954 #define SIGP_SET_ARCH          0x12
 955
 956 /* cpu status bits */
 957 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 958 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 959 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 960 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 961 #define SIGP_STAT_STOPPED           0x00000040UL
 962 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 963 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 964 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 965 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 966 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 967
 968 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
 969 int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
 970                   target_ulong *raddr, int *flags);
 971 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
 972 uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
 973                  uint64_t vr);
 974
 975 #define TARGET_HAS_ICE 1
 976
 977 /* The value of the TOD clock for 1.1.1970. */
 978 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
 979
 980 /* Converts ns to s390's clock format */
 981 static inline uint64_t time2tod(uint64_t ns) {
 982     return (ns << 9) / 125;
 983 }
 984
 985 static inline void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param,
 986                                   uint64_t param64)
 987 {
 988     CPUS390XState *env = &cpu->env;
 989
 990     if (env->ext_index == MAX_EXT_QUEUE - 1) {
 991         /* ugh - can't queue anymore. Let's drop. */
 992         return;
 993     }
 994
 995     env->ext_index++;
 996     assert(env->ext_index < MAX_EXT_QUEUE);
 997
 998     env->ext_queue[env->ext_index].code = code;
 999     env->ext_queue[env->ext_index].param = param;
1000     env->ext_queue[env->ext_index].param64 = param64;
1001
1002     env->pending_int |= INTERRUPT_EXT;
1003     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1004 }
1005
1006 static inline void cpu_inject_io(S390CPU *cpu, uint16_t subchannel_id,
1007                                  uint16_t subchannel_number,
1008                                  uint32_t io_int_parm, uint32_t io_int_word)
1009 {
1010     CPUS390XState *env = &cpu->env;
1011     int isc = IO_INT_WORD_ISC(io_int_word);
1012
1013     if (env->io_index[isc] == MAX_IO_QUEUE - 1) {
1014         /* ugh - can't queue anymore. Let's drop. */
1015         return;
1016     }
1017
1018     env->io_index[isc]++;
1019     assert(env->io_index[isc] < MAX_IO_QUEUE);
1020
1021     env->io_queue[env->io_index[isc]][isc].id = subchannel_id;
1022     env->io_queue[env->io_index[isc]][isc].nr = subchannel_number;
1023     env->io_queue[env->io_index[isc]][isc].parm = io_int_parm;
1024     env->io_queue[env->io_index[isc]][isc].word = io_int_word;
1025
1026     env->pending_int |= INTERRUPT_IO;
1027     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1028 }
1029
1030 static inline void cpu_inject_crw_mchk(S390CPU *cpu)
1031 {
1032     CPUS390XState *env = &cpu->env;
1033
1034     if (env->mchk_index == MAX_MCHK_QUEUE - 1) {
1035         /* ugh - can't queue anymore. Let's drop. */
1036         return;
1037     }
1038
1039     env->mchk_index++;
1040     assert(env->mchk_index < MAX_MCHK_QUEUE);
1041
1042     env->mchk_queue[env->mchk_index].type = 1;
1043
1044     env->pending_int |= INTERRUPT_MCHK;
1045     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1046 }
1047
1048 /* fpu_helper.c */
1049 uint32_t set_cc_nz_f32(float32 v);
1050 uint32_t set_cc_nz_f64(float64 v);
1051 uint32_t set_cc_nz_f128(float128 v);
1052
1053 /* misc_helper.c */
1054 #ifndef CONFIG_USER_ONLY
1055 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3);
1056 #endif
1057 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
1058 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
1059                                      uintptr_t retaddr);
1060
1061 #ifdef CONFIG_KVM
1062 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1063                            uint16_t subchannel_nr, uint32_t io_int_parm,
1064                            uint32_t io_int_word);
1065 void kvm_s390_crw_mchk(void);
1066 void kvm_s390_enable_css_support(S390CPU *cpu);
1067 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1068                                     int vq, bool assign);
1069 int kvm_s390_cpu_restart(S390CPU *cpu);
1070 void kvm_s390_clear_cmma_callback(void *opaque);
1071 #else
1072 static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
1073                                         uint16_t subchannel_nr,
1074                                         uint32_t io_int_parm,
1075                                         uint32_t io_int_word)
1076 {
1077 }
1078 static inline void kvm_s390_crw_mchk(void)
1079 {
1080 }
1081 static inline void kvm_s390_enable_css_support(S390CPU *cpu)
1082 {
1083 }
1084 static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
1085                                                   uint32_t sch, int vq,
1086                                                   bool assign)
1087 {
1088     return -ENOSYS;
1089 }
1090 static inline int kvm_s390_cpu_restart(S390CPU *cpu)
1091 {
1092     return -ENOSYS;
1093 }
1094 static inline void kvm_s390_clear_cmma_callback(void *opaque)
1095 {
1096 }
1097 #endif
1098
1099 static inline void cmma_reset(S390CPU *cpu)
1100 {
1101     if (kvm_enabled()) {
1102         CPUState *cs = CPU(cpu);
1103         kvm_s390_clear_cmma_callback(cs->kvm_state);
1104     }
1105 }
1106
1107 static inline int s390_cpu_restart(S390CPU *cpu)
1108 {
1109     if (kvm_enabled()) {
1110         return kvm_s390_cpu_restart(cpu);
1111     }
1112     return -ENOSYS;
1113 }
1114
1115 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
1116                        uint32_t io_int_parm, uint32_t io_int_word);
1117 void s390_crw_mchk(void);
1118
1119 static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
1120                                               uint32_t sch_id, int vq,
1121                                               bool assign)
1122 {
1123     if (kvm_enabled()) {
1124         return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
1125     } else {
1126         return -ENOSYS;
1127     }
1128 }
1129
1130 #endif