target-tricore/cpu.h

   1 /*
   2  *  TriCore emulation for qemu: main CPU struct.
   3  *
   4  *  Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
   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 #ifndef TRICORE_CPU_H
  21 #define TRICORE_CPU_H
  22
  23 #include "tricore-defs.h"
  24 #include "qemu-common.h"
  25 #include "cpu-qom.h"
  26 #include "exec/cpu-defs.h"
  27 #include "fpu/softfloat.h"
  28
  29 #define CPUArchState struct CPUTriCoreState
  30
  31 struct CPUTriCoreState;
  32
  33 struct tricore_boot_info;
  34
  35 #define NB_MMU_MODES 3
  36
  37 typedef struct tricore_def_t tricore_def_t;
  38
  39 typedef struct CPUTriCoreState CPUTriCoreState;
  40 struct CPUTriCoreState {
  41     /* GPR Register */
  42     uint32_t gpr_a[16];
  43     uint32_t gpr_d[16];
  44     /* CSFR Register */
  45     uint32_t PCXI;
  46 /* Frequently accessed PSW_USB bits are stored separately for efficiency.
  47        This contains all the other bits.  Use psw_{read,write} to access
  48        the whole PSW.  */
  49     uint32_t PSW;
  50
  51     /* PSW flag cache for faster execution
  52     */
  53     uint32_t PSW_USB_C;
  54     uint32_t PSW_USB_V;   /* Only if bit 31 set, then flag is set  */
  55     uint32_t PSW_USB_SV;  /* Only if bit 31 set, then flag is set  */
  56     uint32_t PSW_USB_AV;  /* Only if bit 31 set, then flag is set. */
  57     uint32_t PSW_USB_SAV; /* Only if bit 31 set, then flag is set. */
  58
  59     uint32_t PC;
  60     uint32_t SYSCON;
  61     uint32_t CPU_ID;
  62     uint32_t BIV;
  63     uint32_t BTV;
  64     uint32_t ISP;
  65     uint32_t ICR;
  66     uint32_t FCX;
  67     uint32_t LCX;
  68     uint32_t COMPAT;
  69
  70     /* Mem Protection Register */
  71     uint32_t DPR0_0L;
  72     uint32_t DPR0_0U;
  73     uint32_t DPR0_1L;
  74     uint32_t DPR0_1U;
  75     uint32_t DPR0_2L;
  76     uint32_t DPR0_2U;
  77     uint32_t DPR0_3L;
  78     uint32_t DPR0_3U;
  79
  80     uint32_t DPR1_0L;
  81     uint32_t DPR1_0U;
  82     uint32_t DPR1_1L;
  83     uint32_t DPR1_1U;
  84     uint32_t DPR1_2L;
  85     uint32_t DPR1_2U;
  86     uint32_t DPR1_3L;
  87     uint32_t DPR1_3U;
  88
  89     uint32_t DPR2_0L;
  90     uint32_t DPR2_0U;
  91     uint32_t DPR2_1L;
  92     uint32_t DPR2_1U;
  93     uint32_t DPR2_2L;
  94     uint32_t DPR2_2U;
  95     uint32_t DPR2_3L;
  96     uint32_t DPR2_3U;
  97
  98     uint32_t DPR3_0L;
  99     uint32_t DPR3_0U;
 100     uint32_t DPR3_1L;
 101     uint32_t DPR3_1U;
 102     uint32_t DPR3_2L;
 103     uint32_t DPR3_2U;
 104     uint32_t DPR3_3L;
 105     uint32_t DPR3_3U;
 106
 107     uint32_t CPR0_0L;
 108     uint32_t CPR0_0U;
 109     uint32_t CPR0_1L;
 110     uint32_t CPR0_1U;
 111     uint32_t CPR0_2L;
 112     uint32_t CPR0_2U;
 113     uint32_t CPR0_3L;
 114     uint32_t CPR0_3U;
 115
 116     uint32_t CPR1_0L;
 117     uint32_t CPR1_0U;
 118     uint32_t CPR1_1L;
 119     uint32_t CPR1_1U;
 120     uint32_t CPR1_2L;
 121     uint32_t CPR1_2U;
 122     uint32_t CPR1_3L;
 123     uint32_t CPR1_3U;
 124
 125     uint32_t CPR2_0L;
 126     uint32_t CPR2_0U;
 127     uint32_t CPR2_1L;
 128     uint32_t CPR2_1U;
 129     uint32_t CPR2_2L;
 130     uint32_t CPR2_2U;
 131     uint32_t CPR2_3L;
 132     uint32_t CPR2_3U;
 133
 134     uint32_t CPR3_0L;
 135     uint32_t CPR3_0U;
 136     uint32_t CPR3_1L;
 137     uint32_t CPR3_1U;
 138     uint32_t CPR3_2L;
 139     uint32_t CPR3_2U;
 140     uint32_t CPR3_3L;
 141     uint32_t CPR3_3U;
 142
 143     uint32_t DPM0;
 144     uint32_t DPM1;
 145     uint32_t DPM2;
 146     uint32_t DPM3;
 147
 148     uint32_t CPM0;
 149     uint32_t CPM1;
 150     uint32_t CPM2;
 151     uint32_t CPM3;
 152
 153     /* Memory Management Registers */
 154     uint32_t MMU_CON;
 155     uint32_t MMU_ASI;
 156     uint32_t MMU_TVA;
 157     uint32_t MMU_TPA;
 158     uint32_t MMU_TPX;
 159     uint32_t MMU_TFA;
 160     /* {1.3.1 only */
 161     uint32_t BMACON;
 162     uint32_t SMACON;
 163     uint32_t DIEAR;
 164     uint32_t DIETR;
 165     uint32_t CCDIER;
 166     uint32_t MIECON;
 167     uint32_t PIEAR;
 168     uint32_t PIETR;
 169     uint32_t CCPIER;
 170     /*} */
 171     /* Debug Registers */
 172     uint32_t DBGSR;
 173     uint32_t EXEVT;
 174     uint32_t CREVT;
 175     uint32_t SWEVT;
 176     uint32_t TR0EVT;
 177     uint32_t TR1EVT;
 178     uint32_t DMS;
 179     uint32_t DCX;
 180     uint32_t DBGTCR;
 181     uint32_t CCTRL;
 182     uint32_t CCNT;
 183     uint32_t ICNT;
 184     uint32_t M1CNT;
 185     uint32_t M2CNT;
 186     uint32_t M3CNT;
 187     /* Floating Point Registers */
 188     float_status fp_status;
 189     /* QEMU */
 190     int error_code;
 191     uint32_t hflags;    /* CPU State */
 192
 193     CPU_COMMON
 194
 195     /* Internal CPU feature flags.  */
 196     uint64_t features;
 197
 198     const tricore_def_t *cpu_model;
 199     void *irq[8];
 200     struct QEMUTimer *timer; /* Internal timer */
 201 };
 202
 203 /**
 204  * TriCoreCPU:
 205  * @env: #CPUTriCoreState
 206  *
 207  * A TriCore CPU.
 208  */
 209 struct TriCoreCPU {
 210     /*< private >*/
 211     CPUState parent_obj;
 212     /*< public >*/
 213
 214     CPUTriCoreState env;
 215 };
 216
 217 static inline TriCoreCPU *tricore_env_get_cpu(CPUTriCoreState *env)
 218 {
 219     return TRICORE_CPU(container_of(env, TriCoreCPU, env));
 220 }
 221
 222 #define ENV_GET_CPU(e) CPU(tricore_env_get_cpu(e))
 223
 224 #define ENV_OFFSET offsetof(TriCoreCPU, env)
 225
 226 hwaddr tricore_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 227 void tricore_cpu_dump_state(CPUState *cpu, FILE *f,
 228                             fprintf_function cpu_fprintf, int flags);
 229
 230
 231 #define MASK_PCXI_PCPN 0xff000000
 232 #define MASK_PCXI_PIE  0x00800000
 233 #define MASK_PCXI_UL   0x00400000
 234 #define MASK_PCXI_PCXS 0x000f0000
 235 #define MASK_PCXI_PCXO 0x0000ffff
 236
 237 #define MASK_PSW_USB 0xff000000
 238 #define MASK_USB_C   0x80000000
 239 #define MASK_USB_V   0x40000000
 240 #define MASK_USB_SV  0x20000000
 241 #define MASK_USB_AV  0x10000000
 242 #define MASK_USB_SAV 0x08000000
 243 #define MASK_PSW_PRS 0x00003000
 244 #define MASK_PSW_IO  0x00000c00
 245 #define MASK_PSW_IS  0x00000200
 246 #define MASK_PSW_GW  0x00000100
 247 #define MASK_PSW_CDE 0x00000080
 248 #define MASK_PSW_CDC 0x0000007f
 249 #define MASK_PSW_FPU_RM 0x3000000
 250
 251 #define MASK_SYSCON_PRO_TEN 0x2
 252 #define MASK_SYSCON_FCD_SF  0x1
 253
 254 #define MASK_CPUID_MOD     0xffff0000
 255 #define MASK_CPUID_MOD_32B 0x0000ff00
 256 #define MASK_CPUID_REV     0x000000ff
 257
 258 #define MASK_ICR_PIPN 0x00ff0000
 259 #define MASK_ICR_IE   0x00000100
 260 #define MASK_ICR_CCPN 0x000000ff
 261
 262 #define MASK_FCX_FCXS 0x000f0000
 263 #define MASK_FCX_FCXO 0x0000ffff
 264
 265 #define MASK_LCX_LCXS 0x000f0000
 266 #define MASK_LCX_LCX0 0x0000ffff
 267
 268 #define MASK_DBGSR_DE 0x1
 269 #define MASK_DBGSR_HALT 0x6
 270 #define MASK_DBGSR_SUSP 0x10
 271 #define MASK_DBGSR_PREVSUSP 0x20
 272 #define MASK_DBGSR_PEVT 0x40
 273 #define MASK_DBGSR_EVTSRC 0x1f00
 274
 275 #define TRICORE_HFLAG_KUU     0x3
 276 #define TRICORE_HFLAG_UM0     0x00002 /* user mode-0 flag          */
 277 #define TRICORE_HFLAG_UM1     0x00001 /* user mode-1 flag          */
 278 #define TRICORE_HFLAG_SM      0x00000 /* kernel mode flag          */
 279
 280 enum tricore_features {
 281     TRICORE_FEATURE_13,
 282     TRICORE_FEATURE_131,
 283     TRICORE_FEATURE_16,
 284     TRICORE_FEATURE_161,
 285 };
 286
 287 static inline int tricore_feature(CPUTriCoreState *env, int feature)
 288 {
 289     return (env->features & (1ULL << feature)) != 0;
 290 }
 291
 292 /* TriCore Traps Classes*/
 293 enum {
 294     TRAPC_NONE     = -1,
 295     TRAPC_MMU      = 0,
 296     TRAPC_PROT     = 1,
 297     TRAPC_INSN_ERR = 2,
 298     TRAPC_CTX_MNG  = 3,
 299     TRAPC_SYSBUS   = 4,
 300     TRAPC_ASSERT   = 5,
 301     TRAPC_SYSCALL  = 6,
 302     TRAPC_NMI      = 7,
 303     TRAPC_IRQ      = 8
 304 };
 305
 306 /* Class 0 TIN */
 307 enum {
 308     TIN0_VAF = 0,
 309     TIN0_VAP = 1,
 310 };
 311
 312 /* Class 1 TIN */
 313 enum {
 314     TIN1_PRIV = 1,
 315     TIN1_MPR  = 2,
 316     TIN1_MPW  = 3,
 317     TIN1_MPX  = 4,
 318     TIN1_MPP  = 5,
 319     TIN1_MPN  = 6,
 320     TIN1_GRWP = 7,
 321 };
 322
 323 /* Class 2 TIN */
 324 enum {
 325     TIN2_IOPC = 1,
 326     TIN2_UOPC = 2,
 327     TIN2_OPD  = 3,
 328     TIN2_ALN  = 4,
 329     TIN2_MEM  = 5,
 330 };
 331
 332 /* Class 3 TIN */
 333 enum {
 334     TIN3_FCD  = 1,
 335     TIN3_CDO  = 2,
 336     TIN3_CDU  = 3,
 337     TIN3_FCU  = 4,
 338     TIN3_CSU  = 5,
 339     TIN3_CTYP = 6,
 340     TIN3_NEST = 7,
 341 };
 342
 343 /* Class 4 TIN */
 344 enum {
 345     TIN4_PSE = 1,
 346     TIN4_DSE = 2,
 347     TIN4_DAE = 3,
 348     TIN4_CAE = 4,
 349     TIN4_PIE = 5,
 350     TIN4_DIE = 6,
 351 };
 352
 353 /* Class 5 TIN */
 354 enum {
 355     TIN5_OVF  = 1,
 356     TIN5_SOVF = 1,
 357 };
 358
 359 /* Class 6 TIN
 360  *
 361  * Is always TIN6_SYS
 362  */
 363
 364 /* Class 7 TIN */
 365 enum {
 366     TIN7_NMI = 0,
 367 };
 368
 369 uint32_t psw_read(CPUTriCoreState *env);
 370 void psw_write(CPUTriCoreState *env, uint32_t val);
 371
 372 void fpu_set_state(CPUTriCoreState *env);
 373
 374 #define MMU_USER_IDX 2
 375
 376 void tricore_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 377
 378 #define cpu_signal_handler cpu_tricore_signal_handler
 379 #define cpu_list tricore_cpu_list
 380
 381 static inline int cpu_mmu_index(CPUTriCoreState *env, bool ifetch)
 382 {
 383     return 0;
 384 }
 385
 386
 387
 388 #include "exec/cpu-all.h"
 389
 390 enum {
 391     /* 1 bit to define user level / supervisor access */
 392     ACCESS_USER  = 0x00,
 393     ACCESS_SUPER = 0x01,
 394     /* 1 bit to indicate direction */
 395     ACCESS_STORE = 0x02,
 396     /* Type of instruction that generated the access */
 397     ACCESS_CODE  = 0x10, /* Code fetch access                */
 398     ACCESS_INT   = 0x20, /* Integer load/store access        */
 399     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 400 };
 401
 402 void cpu_state_reset(CPUTriCoreState *s);
 403 void tricore_tcg_init(void);
 404 int cpu_tricore_signal_handler(int host_signum, void *pinfo, void *puc);
 405
 406 static inline void cpu_get_tb_cpu_state(CPUTriCoreState *env, target_ulong *pc,
 407                                         target_ulong *cs_base, uint32_t *flags)
 408 {
 409     *pc = env->PC;
 410     *cs_base = 0;
 411     *flags = 0;
 412 }
 413
 414 TriCoreCPU *cpu_tricore_init(const char *cpu_model);
 415
 416 #define cpu_init(cpu_model) CPU(cpu_tricore_init(cpu_model))
 417
 418
 419 /* helpers.c */
 420 int cpu_tricore_handle_mmu_fault(CPUState *cpu, target_ulong address,
 421                                  int rw, int mmu_idx);
 422 #define cpu_handle_mmu_fault cpu_tricore_handle_mmu_fault
 423
 424 #endif /* TRICORE_CPU_H */