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