target-alpha/cpu.h

   1 /*
   2  *  Alpha emulation cpu definitions for qemu.
   3  *
   4  *  Copyright (c) 2007 Jocelyn Mayer
   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  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #if !defined (__CPU_ALPHA_H__)
  21 #define __CPU_ALPHA_H__
  22
  23 #include "config.h"
  24
  25 #define TARGET_LONG_BITS 64
  26
  27 #define CPUState struct CPUAlphaState
  28
  29 #include "cpu-defs.h"
  30
  31 #include <setjmp.h>
  32
  33 #include "softfloat.h"
  34
  35 #define TARGET_HAS_ICE 1
  36
  37 #define ELF_MACHINE     EM_ALPHA
  38
  39 #define ICACHE_LINE_SIZE 32
  40 #define DCACHE_LINE_SIZE 32
  41
  42 #define TARGET_PAGE_BITS 13
  43
  44 #define VA_BITS 43
  45
  46 /* Alpha major type */
  47 enum {
  48     ALPHA_EV3  = 1,
  49     ALPHA_EV4  = 2,
  50     ALPHA_SIM  = 3,
  51     ALPHA_LCA  = 4,
  52     ALPHA_EV5  = 5, /* 21164 */
  53     ALPHA_EV45 = 6, /* 21064A */
  54     ALPHA_EV56 = 7, /* 21164A */
  55 };
  56
  57 /* EV4 minor type */
  58 enum {
  59     ALPHA_EV4_2 = 0,
  60     ALPHA_EV4_3 = 1,
  61 };
  62
  63 /* LCA minor type */
  64 enum {
  65     ALPHA_LCA_1 = 1, /* 21066 */
  66     ALPHA_LCA_2 = 2, /* 20166 */
  67     ALPHA_LCA_3 = 3, /* 21068 */
  68     ALPHA_LCA_4 = 4, /* 21068 */
  69     ALPHA_LCA_5 = 5, /* 21066A */
  70     ALPHA_LCA_6 = 6, /* 21068A */
  71 };
  72
  73 /* EV5 minor type */
  74 enum {
  75     ALPHA_EV5_1 = 1, /* Rev BA, CA */
  76     ALPHA_EV5_2 = 2, /* Rev DA, EA */
  77     ALPHA_EV5_3 = 3, /* Pass 3 */
  78     ALPHA_EV5_4 = 4, /* Pass 3.2 */
  79     ALPHA_EV5_5 = 5, /* Pass 4 */
  80 };
  81
  82 /* EV45 minor type */
  83 enum {
  84     ALPHA_EV45_1 = 1, /* Pass 1 */
  85     ALPHA_EV45_2 = 2, /* Pass 1.1 */
  86     ALPHA_EV45_3 = 3, /* Pass 2 */
  87 };
  88
  89 /* EV56 minor type */
  90 enum {
  91     ALPHA_EV56_1 = 1, /* Pass 1 */
  92     ALPHA_EV56_2 = 2, /* Pass 2 */
  93 };
  94
  95 enum {
  96     IMPLVER_2106x = 0, /* EV4, EV45 & LCA45 */
  97     IMPLVER_21164 = 1, /* EV5, EV56 & PCA45 */
  98     IMPLVER_21264 = 2, /* EV6, EV67 & EV68x */
  99     IMPLVER_21364 = 3, /* EV7 & EV79 */
 100 };
 101
 102 enum {
 103     AMASK_BWX      = 0x00000001,
 104     AMASK_FIX      = 0x00000002,
 105     AMASK_CIX      = 0x00000004,
 106     AMASK_MVI      = 0x00000100,
 107     AMASK_TRAP     = 0x00000200,
 108     AMASK_PREFETCH = 0x00001000,
 109 };
 110
 111 enum {
 112     VAX_ROUND_NORMAL = 0,
 113     VAX_ROUND_CHOPPED,
 114 };
 115
 116 enum {
 117     IEEE_ROUND_NORMAL = 0,
 118     IEEE_ROUND_DYNAMIC,
 119     IEEE_ROUND_PLUS,
 120     IEEE_ROUND_MINUS,
 121     IEEE_ROUND_CHOPPED,
 122 };
 123
 124 /* IEEE floating-point operations encoding */
 125 /* Trap mode */
 126 enum {
 127     FP_TRAP_I   = 0x0,
 128     FP_TRAP_U   = 0x1,
 129     FP_TRAP_S  = 0x4,
 130     FP_TRAP_SU  = 0x5,
 131     FP_TRAP_SUI = 0x7,
 132 };
 133
 134 /* Rounding mode */
 135 enum {
 136     FP_ROUND_CHOPPED = 0x0,
 137     FP_ROUND_MINUS   = 0x1,
 138     FP_ROUND_NORMAL  = 0x2,
 139     FP_ROUND_DYNAMIC = 0x3,
 140 };
 141
 142 /* Internal processor registers */
 143 /* XXX: TOFIX: most of those registers are implementation dependant */
 144 enum {
 145     /* Ebox IPRs */
 146     IPR_CC           = 0xC0,            /* 21264 */
 147     IPR_CC_CTL       = 0xC1,            /* 21264 */
 148 #define IPR_CC_CTL_ENA_SHIFT 32
 149 #define IPR_CC_CTL_COUNTER_MASK 0xfffffff0UL
 150     IPR_VA           = 0xC2,            /* 21264 */
 151     IPR_VA_CTL       = 0xC4,            /* 21264 */
 152 #define IPR_VA_CTL_VA_48_SHIFT 1
 153 #define IPR_VA_CTL_VPTB_SHIFT 30
 154     IPR_VA_FORM      = 0xC3,            /* 21264 */
 155     /* Ibox IPRs */
 156     IPR_ITB_TAG      = 0x00,            /* 21264 */
 157     IPR_ITB_PTE      = 0x01,            /* 21264 */
 158     IPR_ITB_IAP      = 0x02,
 159     IPR_ITB_IA       = 0x03,            /* 21264 */
 160     IPR_ITB_IS       = 0x04,            /* 21264 */
 161     IPR_PMPC         = 0x05,
 162     IPR_EXC_ADDR     = 0x06,            /* 21264 */
 163     IPR_IVA_FORM     = 0x07,            /* 21264 */
 164     IPR_CM           = 0x09,            /* 21264 */
 165 #define IPR_CM_SHIFT 3
 166 #define IPR_CM_MASK (3ULL << IPR_CM_SHIFT)      /* 21264 */
 167     IPR_IER          = 0x0A,            /* 21264 */
 168 #define IPR_IER_MASK 0x0000007fffffe000ULL
 169     IPR_IER_CM       = 0x0B,            /* 21264: = CM | IER */
 170     IPR_SIRR         = 0x0C,            /* 21264 */
 171 #define IPR_SIRR_SHIFT 14
 172 #define IPR_SIRR_MASK 0x7fff
 173     IPR_ISUM         = 0x0D,            /* 21264 */
 174     IPR_HW_INT_CLR   = 0x0E,            /* 21264 */
 175     IPR_EXC_SUM      = 0x0F,
 176     IPR_PAL_BASE     = 0x10,
 177     IPR_I_CTL        = 0x11,
 178 #define IPR_I_CTL_CHIP_ID_SHIFT 24      /* 21264 */
 179 #define IPR_I_CTL_BIST_FAIL (1 << 23)   /* 21264 */
 180 #define IPR_I_CTL_IC_EN_SHIFT 2         /* 21264 */
 181 #define IPR_I_CTL_SDE1_SHIFT 7          /* 21264 */
 182 #define IPR_I_CTL_HWE_SHIFT 12          /* 21264 */
 183 #define IPR_I_CTL_VA_48_SHIFT 15        /* 21264 */
 184 #define IPR_I_CTL_SPE_SHIFT 3           /* 21264 */
 185 #define IPR_I_CTL_CALL_PAL_R23_SHIFT 20 /* 21264 */
 186     IPR_I_STAT       = 0x16,            /* 21264 */
 187     IPR_IC_FLUSH     = 0x13,            /* 21264 */
 188     IPR_IC_FLUSH_ASM = 0x12,            /* 21264 */
 189     IPR_CLR_MAP      = 0x15,
 190     IPR_SLEEP        = 0x17,
 191     IPR_PCTX         = 0x40,
 192     IPR_PCTX_ASN       = 0x01,  /* field */
 193 #define IPR_PCTX_ASN_SHIFT 39
 194     IPR_PCTX_ASTER     = 0x02,  /* field */
 195 #define IPR_PCTX_ASTER_SHIFT 5
 196     IPR_PCTX_ASTRR     = 0x04,  /* field */
 197 #define IPR_PCTX_ASTRR_SHIFT 9
 198     IPR_PCTX_PPCE      = 0x08,  /* field */
 199 #define IPR_PCTX_PPCE_SHIFT 1
 200     IPR_PCTX_FPE       = 0x10,  /* field */
 201 #define IPR_PCTX_FPE_SHIFT 2
 202     IPR_PCTX_ALL       = 0x5f,  /* all fields */
 203     IPR_PCTR_CTL     = 0x14,            /* 21264 */
 204     /* Mbox IPRs */
 205     IPR_DTB_TAG0     = 0x20,            /* 21264 */
 206     IPR_DTB_TAG1     = 0xA0,            /* 21264 */
 207     IPR_DTB_PTE0     = 0x21,            /* 21264 */
 208     IPR_DTB_PTE1     = 0xA1,            /* 21264 */
 209     IPR_DTB_ALTMODE  = 0xA6,
 210     IPR_DTB_ALTMODE0 = 0x26,            /* 21264 */
 211 #define IPR_DTB_ALTMODE_MASK 3
 212     IPR_DTB_IAP      = 0xA2,
 213     IPR_DTB_IA       = 0xA3,            /* 21264 */
 214     IPR_DTB_IS0      = 0x24,
 215     IPR_DTB_IS1      = 0xA4,
 216     IPR_DTB_ASN0     = 0x25,            /* 21264 */
 217     IPR_DTB_ASN1     = 0xA5,            /* 21264 */
 218 #define IPR_DTB_ASN_SHIFT 56
 219     IPR_MM_STAT      = 0x27,            /* 21264 */
 220     IPR_M_CTL        = 0x28,            /* 21264 */
 221 #define IPR_M_CTL_SPE_SHIFT 1
 222 #define IPR_M_CTL_SPE_MASK 7
 223     IPR_DC_CTL       = 0x29,            /* 21264 */
 224     IPR_DC_STAT      = 0x2A,            /* 21264 */
 225     /* Cbox IPRs */
 226     IPR_C_DATA       = 0x2B,
 227     IPR_C_SHIFT      = 0x2C,
 228
 229     IPR_ASN,
 230     IPR_ASTEN,
 231     IPR_ASTSR,
 232     IPR_DATFX,
 233     IPR_ESP,
 234     IPR_FEN,
 235     IPR_IPIR,
 236     IPR_IPL,
 237     IPR_KSP,
 238     IPR_MCES,
 239     IPR_PERFMON,
 240     IPR_PCBB,
 241     IPR_PRBR,
 242     IPR_PTBR,
 243     IPR_SCBB,
 244     IPR_SISR,
 245     IPR_SSP,
 246     IPR_SYSPTBR,
 247     IPR_TBCHK,
 248     IPR_TBIA,
 249     IPR_TBIAP,
 250     IPR_TBIS,
 251     IPR_TBISD,
 252     IPR_TBISI,
 253     IPR_USP,
 254     IPR_VIRBND,
 255     IPR_VPTB,
 256     IPR_WHAMI,
 257     IPR_ALT_MODE,
 258     IPR_LAST,
 259 };
 260
 261 typedef struct CPUAlphaState CPUAlphaState;
 262
 263 typedef struct pal_handler_t pal_handler_t;
 264 struct pal_handler_t {
 265     /* Reset */
 266     void (*reset)(CPUAlphaState *env);
 267     /* Uncorrectable hardware error */
 268     void (*machine_check)(CPUAlphaState *env);
 269     /* Arithmetic exception */
 270     void (*arithmetic)(CPUAlphaState *env);
 271     /* Interrupt / correctable hardware error */
 272     void (*interrupt)(CPUAlphaState *env);
 273     /* Data fault */
 274     void (*dfault)(CPUAlphaState *env);
 275     /* DTB miss pal */
 276     void (*dtb_miss_pal)(CPUAlphaState *env);
 277     /* DTB miss native */
 278     void (*dtb_miss_native)(CPUAlphaState *env);
 279     /* Unaligned access */
 280     void (*unalign)(CPUAlphaState *env);
 281     /* ITB miss */
 282     void (*itb_miss)(CPUAlphaState *env);
 283     /* Instruction stream access violation */
 284     void (*itb_acv)(CPUAlphaState *env);
 285     /* Reserved or privileged opcode */
 286     void (*opcdec)(CPUAlphaState *env);
 287     /* Floating point exception */
 288     void (*fen)(CPUAlphaState *env);
 289     /* Call pal instruction */
 290     void (*call_pal)(CPUAlphaState *env, uint32_t palcode);
 291 };
 292
 293 #define NB_MMU_MODES 4
 294
 295 struct CPUAlphaState {
 296     uint64_t ir[31];
 297     float64  fir[31];
 298     float_status fp_status;
 299     uint64_t fpcr;
 300     uint64_t pc;
 301     uint64_t lock;
 302     uint32_t pcc[2];
 303     uint64_t ipr[IPR_LAST];
 304     uint64_t ps;
 305     uint64_t unique;
 306     int saved_mode; /* Used for HW_LD / HW_ST */
 307     int intr_flag; /* For RC and RS */
 308
 309 #if TARGET_LONG_BITS > HOST_LONG_BITS
 310     /* temporary fixed-point registers
 311      * used to emulate 64 bits target on 32 bits hosts
 312      */
 313     target_ulong t0, t1;
 314 #endif
 315
 316     /* Those resources are used only in Qemu core */
 317     CPU_COMMON
 318
 319     uint32_t hflags;
 320
 321     int error_code;
 322
 323     uint32_t features;
 324     uint32_t amask;
 325     int implver;
 326     pal_handler_t *pal_handler;
 327 };
 328
 329 #define cpu_init cpu_alpha_init
 330 #define cpu_exec cpu_alpha_exec
 331 #define cpu_gen_code cpu_alpha_gen_code
 332 #define cpu_signal_handler cpu_alpha_signal_handler
 333
 334 /* MMU modes definitions */
 335 #define MMU_MODE0_SUFFIX _kernel
 336 #define MMU_MODE1_SUFFIX _executive
 337 #define MMU_MODE2_SUFFIX _supervisor
 338 #define MMU_MODE3_SUFFIX _user
 339 #define MMU_USER_IDX 3
 340 static inline int cpu_mmu_index (CPUState *env)
 341 {
 342     return (env->ps >> 3) & 3;
 343 }
 344
 345 #if defined(CONFIG_USER_ONLY)
 346 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 347 {
 348     if (newsp)
 349         env->ir[30] = newsp;
 350     /* FIXME: Zero syscall return value.  */
 351 }
 352 #endif
 353
 354 #include "cpu-all.h"
 355 #include "exec-all.h"
 356
 357 enum {
 358     FEATURE_ASN    = 0x00000001,
 359     FEATURE_SPS    = 0x00000002,
 360     FEATURE_VIRBND = 0x00000004,
 361     FEATURE_TBCHK  = 0x00000008,
 362 };
 363
 364 enum {
 365     EXCP_RESET            = 0x0000,
 366     EXCP_MCHK             = 0x0020,
 367     EXCP_ARITH            = 0x0060,
 368     EXCP_HW_INTERRUPT     = 0x00E0,
 369     EXCP_DFAULT           = 0x01E0,
 370     EXCP_DTB_MISS_PAL     = 0x09E0,
 371     EXCP_ITB_MISS         = 0x03E0,
 372     EXCP_ITB_ACV          = 0x07E0,
 373     EXCP_DTB_MISS_NATIVE  = 0x08E0,
 374     EXCP_UNALIGN          = 0x11E0,
 375     EXCP_OPCDEC           = 0x13E0,
 376     EXCP_FEN              = 0x17E0,
 377     EXCP_CALL_PAL         = 0x2000,
 378     EXCP_CALL_PALP        = 0x3000,
 379     EXCP_CALL_PALE        = 0x4000,
 380     /* Pseudo exception for console */
 381     EXCP_CONSOLE_DISPATCH = 0x4001,
 382     EXCP_CONSOLE_FIXUP    = 0x4002,
 383 };
 384
 385 /* Arithmetic exception */
 386 enum {
 387     EXCP_ARITH_OVERFLOW,
 388 };
 389
 390 enum {
 391     IR_V0   = 0,
 392     IR_T0   = 1,
 393     IR_T1   = 2,
 394     IR_T2   = 3,
 395     IR_T3   = 4,
 396     IR_T4   = 5,
 397     IR_T5   = 6,
 398     IR_T6   = 7,
 399     IR_T7   = 8,
 400     IR_S0   = 9,
 401     IR_S1   = 10,
 402     IR_S2   = 11,
 403     IR_S3   = 12,
 404     IR_S4   = 13,
 405     IR_S5   = 14,
 406     IR_S6   = 15,
 407 #define IR_FP IR_S6
 408     IR_A0   = 16,
 409     IR_A1   = 17,
 410     IR_A2   = 18,
 411     IR_A3   = 19,
 412     IR_A4   = 20,
 413     IR_A5   = 21,
 414     IR_T8   = 22,
 415     IR_T9   = 23,
 416     IR_T10  = 24,
 417     IR_T11  = 25,
 418     IR_RA   = 26,
 419     IR_T12  = 27,
 420 #define IR_PV IR_T12
 421     IR_AT   = 28,
 422     IR_GP   = 29,
 423     IR_SP   = 30,
 424     IR_ZERO = 31,
 425 };
 426
 427 CPUAlphaState * cpu_alpha_init (const char *cpu_model);
 428 int cpu_alpha_exec(CPUAlphaState *s);
 429 /* you can call this signal handler from your SIGBUS and SIGSEGV
 430    signal handlers to inform the virtual CPU of exceptions. non zero
 431    is returned if the signal was handled by the virtual CPU.  */
 432 int cpu_alpha_signal_handler(int host_signum, void *pinfo,
 433                              void *puc);
 434 int cpu_alpha_handle_mmu_fault (CPUState *env, uint64_t address, int rw,
 435                                 int mmu_idx, int is_softmmu);
 436 void do_interrupt (CPUState *env);
 437
 438 int cpu_alpha_mfpr (CPUState *env, int iprn, uint64_t *valp);
 439 int cpu_alpha_mtpr (CPUState *env, int iprn, uint64_t val, uint64_t *oldvalp);
 440 void pal_init (CPUState *env);
 441 #if !defined (CONFIG_USER_ONLY)
 442 void call_pal (CPUState *env);
 443 #else
 444 void call_pal (CPUState *env, int palcode);
 445 #endif
 446
 447 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 448 {
 449     env->pc = tb->pc;
 450 }
 451
 452 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 453                                         target_ulong *cs_base, int *flags)
 454 {
 455     *pc = env->pc;
 456     *cs_base = 0;
 457     *flags = env->ps;
 458 }
 459
 460 #endif /* !defined (__CPU_ALPHA_H__) */