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_UM0     0x00002 /* user mode-0 flag          */
 242 #define TRICORE_HFLAG_UM1     0x00001 /* user mode-1 flag          */
 243 #define TRICORE_HFLAG_SM      0x00000 /* kernel mode flag          */
 244
 245 enum tricore_features {
 246     TRICORE_FEATURE_13,
 247     TRICORE_FEATURE_131,
 248     TRICORE_FEATURE_16,
 249 };
 250
 251 static inline int tricore_feature(CPUTriCoreState *env, int feature)
 252 {
 253     return (env->features & (1ULL << feature)) != 0;
 254 }
 255
 256 /* TriCore Traps Classes*/
 257 enum {
 258     TRAPC_NONE     = -1,
 259     TRAPC_MMU      = 0,
 260     TRAPC_PROT     = 1,
 261     TRAPC_INSN_ERR = 2,
 262     TRAPC_CTX_MNG  = 3,
 263     TRAPC_SYSBUS   = 4,
 264     TRAPC_ASSERT   = 5,
 265     TRAPC_SYSCALL  = 6,
 266     TRAPC_NMI      = 7,
 267 };
 268
 269 /* Class 0 TIN */
 270 enum {
 271     TIN0_VAF = 0,
 272     TIN0_VAP = 1,
 273 };
 274
 275 /* Class 1 TIN */
 276 enum {
 277     TIN1_PRIV = 1,
 278     TIN1_MPR  = 2,
 279     TIN1_MPW  = 3,
 280     TIN1_MPX  = 4,
 281     TIN1_MPP  = 5,
 282     TIN1_MPN  = 6,
 283     TIN1_GRWP = 7,
 284 };
 285
 286 /* Class 2 TIN */
 287 enum {
 288     TIN2_IOPC = 1,
 289     TIN2_UOPC = 2,
 290     TIN2_OPD  = 3,
 291     TIN2_ALN  = 4,
 292     TIN2_MEM  = 5,
 293 };
 294
 295 /* Class 3 TIN */
 296 enum {
 297     TIN3_FCD  = 1,
 298     TIN3_CDO  = 2,
 299     TIN3_CDU  = 3,
 300     TIN3_FCU  = 4,
 301     TIN3_CSU  = 5,
 302     TIN3_CTYP = 6,
 303     TIN3_NEST = 7,
 304 };
 305
 306 /* Class 4 TIN */
 307 enum {
 308     TIN4_PSE = 1,
 309     TIN4_DSE = 2,
 310     TIN4_DAE = 3,
 311     TIN4_CAE = 4,
 312     TIN4_PIE = 5,
 313     TIN4_DIE = 6,
 314 };
 315
 316 /* Class 5 TIN */
 317 enum {
 318     TIN5_OVF  = 1,
 319     TIN5_SOVF = 1,
 320 };
 321
 322 /* Class 6 TIN
 323  *
 324  * Is always TIN6_SYS
 325  */
 326
 327 /* Class 7 TIN */
 328 enum {
 329     TIN7_NMI = 0,
 330 };
 331
 332 uint32_t psw_read(CPUTriCoreState *env);
 333 void psw_write(CPUTriCoreState *env, uint32_t val);
 334
 335 #include "cpu-qom.h"
 336 #define MMU_USER_IDX 2
 337
 338 void tricore_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 339
 340 #define cpu_exec cpu_tricore_exec
 341 #define cpu_signal_handler cpu_tricore_signal_handler
 342 #define cpu_list tricore_cpu_list
 343
 344 static inline int cpu_mmu_index(CPUTriCoreState *env)
 345 {
 346     return 0;
 347 }
 348
 349
 350
 351 #include "exec/cpu-all.h"
 352
 353 enum {
 354     /* 1 bit to define user level / supervisor access */
 355     ACCESS_USER  = 0x00,
 356     ACCESS_SUPER = 0x01,
 357     /* 1 bit to indicate direction */
 358     ACCESS_STORE = 0x02,
 359     /* Type of instruction that generated the access */
 360     ACCESS_CODE  = 0x10, /* Code fetch access                */
 361     ACCESS_INT   = 0x20, /* Integer load/store access        */
 362     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 363 };
 364
 365 void cpu_state_reset(CPUTriCoreState *s);
 366 int cpu_tricore_exec(CPUTriCoreState *s);
 367 void tricore_tcg_init(void);
 368 int cpu_tricore_signal_handler(int host_signum, void *pinfo, void *puc);
 369
 370 static inline void cpu_get_tb_cpu_state(CPUTriCoreState *env, target_ulong *pc,
 371                                         target_ulong *cs_base, int *flags)
 372 {
 373     *pc = env->PC;
 374     *cs_base = 0;
 375     *flags = 0;
 376 }
 377
 378 TriCoreCPU *cpu_tricore_init(const char *cpu_model);
 379
 380 static inline CPUTriCoreState *cpu_init(const char *cpu_model)
 381 {
 382     TriCoreCPU *cpu = cpu_tricore_init(cpu_model);
 383     if (cpu == NULL) {
 384         return NULL;
 385     }
 386     return &cpu->env;
 387
 388 }
 389
 390
 391 /* helpers.c */
 392 int cpu_tricore_handle_mmu_fault(CPUState *cpu, target_ulong address,
 393                                  int rw, int mmu_idx);
 394 #define cpu_handle_mmu_fault cpu_tricore_handle_mmu_fault
 395
 396 #include "exec/exec-all.h"
 397
 398 static inline void cpu_pc_from_tb(CPUTriCoreState *env, TranslationBlock *tb)
 399 {
 400     env->PC = tb->pc;
 401 }
 402
 403 #endif /*__TRICORE_CPU_H__ */