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