sim/erc32/sis.h

   1 /* Copyright (C) 1995-2022 Free Software Foundation, Inc.
   2
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 3 of the License, or
   6    (at your option) any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  15
  16 #include "ansidecl.h"
  17 #include "sim/callback.h"
  18 #include "sim/sim.h"
  19 #include <sim-config.h>
  20 #include <stdint.h>
  21
  22 #if HOST_BYTE_ORDER == BIG_ENDIAN
  23 #define HOST_BIG_ENDIAN
  24 #define EBT 0
  25 #else
  26 #define HOST_LITTLE_ENDIAN
  27 #define EBT 3
  28 #endif
  29
  30 #define I_ACC_EXC 1
  31
  32 /* Maximum events in event queue */
  33 #define EVENT_MAX       256
  34
  35 /* Maximum # of floating point queue */
  36 #define FPUQN   1
  37
  38 /* Maximum # of breakpoints */
  39 #define BPT_MAX 256
  40
  41 struct histype {
  42     unsigned        addr;
  43     unsigned        time;
  44 };
  45
  46 /* type definitions */
  47
  48 typedef float   float32;        /* 32-bit float */
  49 typedef double  float64;        /* 64-bit float */
  50
  51 struct pstate {
  52
  53     float64         fd[16];     /* FPU registers */
  54 #ifdef HOST_LITTLE_ENDIAN
  55     float32         fs[32];
  56     float32        *fdp;
  57 #else
  58     float32        *fs;
  59 #endif
  60     int32_t          *fsi;
  61     uint32_t          fsr;
  62     int32_t           fpstate;
  63     uint32_t          fpq[FPUQN * 2];
  64     uint32_t          fpqn;
  65     uint32_t          ftime;
  66     uint32_t          flrd;
  67     uint32_t          frd;
  68     uint32_t          frs1;
  69     uint32_t          frs2;
  70     uint32_t          fpu_pres; /* FPU present (0 = No, 1 = Yes) */
  71
  72     uint32_t          psr;      /* IU registers */
  73     uint32_t          tbr;
  74     uint32_t          wim;
  75     uint32_t          g[8];
  76     uint32_t          r[128];
  77     uint32_t          y;
  78     uint32_t          asr17;      /* Single vector trapping */
  79     uint32_t          pc, npc;
  80
  81
  82     uint32_t          trap;     /* Current trap type */
  83     uint32_t          annul;    /* Instruction annul */
  84     uint32_t          data;     /* Loaded data       */
  85     uint32_t          inst;     /* Current instruction */
  86     uint32_t          asi;      /* Current ASI */
  87     uint32_t          err_mode; /* IU error mode */
  88     uint32_t          breakpoint;
  89     uint32_t          bptnum;
  90     uint32_t          bphit;
  91     uint32_t          bpts[BPT_MAX];    /* Breakpoints */
  92
  93     uint32_t          ltime;    /* Load interlock time */
  94     uint32_t          hold;     /* IU hold cycles in current inst */
  95     uint32_t          fhold;    /* FPU hold cycles in current inst */
  96     uint32_t          icnt;     /* Instruction cycles in curr inst */
  97
  98     uint32_t          histlen;  /* Trace history management */
  99     uint32_t          histind;
 100     struct histype *histbuf;
 101     float32         freq;       /* Simulated processor frequency */
 102
 103
 104     double          tottime;
 105     uint64_t          ninst;
 106     uint64_t          fholdt;
 107     uint64_t          holdt;
 108     uint64_t          icntt;
 109     uint64_t          finst;
 110     uint64_t          simstart;
 111     double          starttime;
 112     uint64_t          tlimit;   /* Simulation time limit */
 113     uint64_t          pwdtime;  /* Cycles in power-down mode */
 114     uint64_t          nstore;   /* Number of load instructions */
 115     uint64_t          nload;    /* Number of store instructions */
 116     uint64_t          nannul;   /* Number of annuled instructions */
 117     uint64_t          nbranch;  /* Number of branch instructions */
 118     uint32_t          ildreg;   /* Destination of last load instruction */
 119     uint64_t          ildtime;  /* Last time point for load dependency */
 120
 121     int             rett_err;   /* IU in jmpl/restore error state (Rev.0) */
 122     int             jmpltime;
 123 };
 124
 125 struct evcell {
 126     void            (*cfunc) ();
 127     int32_t           arg;
 128     uint64_t          time;
 129     struct evcell  *nxt;
 130 };
 131
 132 struct estate {
 133     struct evcell   eq;
 134     struct evcell  *freeq;
 135     uint64_t          simtime;
 136 };
 137
 138 struct irqcell {
 139     void            (*callback) ();
 140     int32_t           arg;
 141 };
 142
 143
 144 #define OK 0
 145 #define TIME_OUT 1
 146 #define BPT_HIT 2
 147 #define ERROR 3
 148 #define CTRL_C 4
 149
 150 /* Prototypes  */
 151
 152 /* erc32.c */
 153 extern void     init_sim (void);
 154 extern void     reset (void);
 155 extern void     error_mode (uint32_t pc);
 156 extern void     sim_halt (void);
 157 extern void     exit_sim (void);
 158 extern void     init_stdio (void);
 159 extern void     restore_stdio (void);
 160 extern int      memory_iread (uint32_t addr, uint32_t *data, uint32_t *ws);
 161 extern int      memory_read (int32_t asi, uint32_t addr, void *data,
 162                              int32_t sz, int32_t *ws);
 163 extern int      memory_write (int32_t asi, uint32_t addr, uint32_t *data,
 164                               int32_t sz, int32_t *ws);
 165 extern int      sis_memory_write (uint32_t addr,
 166                                   const void *data, uint32_t length);
 167 extern int      sis_memory_read (uint32_t addr, void *data,
 168                                  uint32_t length);
 169 extern void     boot_init (void);
 170
 171 /* func.c */
 172 extern struct pstate  sregs;
 173 extern void     set_regi (struct pstate *sregs, int32_t reg,
 174                           uint32_t rval);
 175 extern void     get_regi (struct pstate *sregs, int32_t reg, unsigned char *buf);
 176 extern int      exec_cmd (struct pstate *sregs, const char *cmd);
 177 extern void     reset_stat (struct pstate  *sregs);
 178 extern void     show_stat (struct pstate  *sregs);
 179 extern void     init_bpt (struct pstate  *sregs);
 180 extern void     init_signals (void);
 181
 182 struct disassemble_info;
 183 extern void     dis_mem (uint32_t addr, uint32_t len,
 184                          struct disassemble_info *info);
 185 extern void     event (void (*cfunc) (), int32_t arg, uint64_t delta);
 186 extern void     set_int (int32_t level, void (*callback) (), int32_t arg);
 187 extern void     advance_time (struct pstate  *sregs);
 188 extern uint32_t now (void);
 189 extern int      wait_for_irq (void);
 190 extern int      check_bpt (struct pstate *sregs);
 191 extern void     reset_all (void);
 192 extern void     sys_reset (void);
 193 extern void     sys_halt (void);
 194 extern int      bfd_load (const char *fname);
 195 extern double   get_time (void);
 196
 197 /* exec.c */
 198 extern int      dispatch_instruction (struct pstate *sregs);
 199 extern int      execute_trap (struct pstate *sregs);
 200 extern int      check_interrupts (struct pstate  *sregs);
 201 extern void     init_regs (struct pstate *sregs);
 202
 203 /* interf.c */
 204 extern int      run_sim (struct pstate *sregs,
 205                          uint64_t icount, int dis);
 206
 207 /* float.c */
 208 extern int      get_accex (void);
 209 extern void     clear_accex (void);
 210 extern void     set_fsr (uint32_t fsr);
 211
 212 /* help.c */
 213 extern void     usage (void);
 214 extern void     gen_help (void);