sim/erc32/sis.h

   1 /* Copyright (C) 1995-2021 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 short int int16;        /* 16-bit signed int */
  49 typedef unsigned short int uint16;      /* 16-bit unsigned int */
  50 typedef int     int32;          /* 32-bit signed int */
  51 typedef unsigned int uint32;    /* 32-bit unsigned int */
  52 typedef float   float32;        /* 32-bit float */
  53 typedef double  float64;        /* 64-bit float */
  54
  55 typedef uint64_t uint64; /* 64-bit unsigned int */
  56 typedef int64_t int64;     /* 64-bit signed int */
  57
  58 struct pstate {
  59
  60     float64         fd[16];     /* FPU registers */
  61 #ifdef HOST_LITTLE_ENDIAN
  62     float32         fs[32];
  63     float32        *fdp;
  64 #else
  65     float32        *fs;
  66 #endif
  67     int32          *fsi;
  68     uint32          fsr;
  69     int32           fpstate;
  70     uint32          fpq[FPUQN * 2];
  71     uint32          fpqn;
  72     uint32          ftime;
  73     uint32          flrd;
  74     uint32          frd;
  75     uint32          frs1;
  76     uint32          frs2;
  77     uint32          fpu_pres;   /* FPU present (0 = No, 1 = Yes) */
  78
  79     uint32          psr;        /* IU registers */
  80     uint32          tbr;
  81     uint32          wim;
  82     uint32          g[8];
  83     uint32          r[128];
  84     uint32          y;
  85     uint32          asr17;      /* Single vector trapping */
  86     uint32          pc, npc;
  87
  88
  89     uint32          trap;       /* Current trap type */
  90     uint32          annul;      /* Instruction annul */
  91     uint32          data;       /* Loaded data       */
  92     uint32          inst;       /* Current instruction */
  93     uint32          asi;        /* Current ASI */
  94     uint32          err_mode;   /* IU error mode */
  95     uint32          breakpoint;
  96     uint32          bptnum;
  97     uint32          bphit;
  98     uint32          bpts[BPT_MAX];      /* Breakpoints */
  99
 100     uint32          ltime;      /* Load interlock time */
 101     uint32          hold;       /* IU hold cycles in current inst */
 102     uint32          fhold;      /* FPU hold cycles in current inst */
 103     uint32          icnt;       /* Instruction cycles in curr inst */
 104
 105     uint32          histlen;    /* Trace history management */
 106     uint32          histind;
 107     struct histype *histbuf;
 108     float32         freq;       /* Simulated processor frequency */
 109
 110
 111     double          tottime;
 112     uint64          ninst;
 113     uint64          fholdt;
 114     uint64          holdt;
 115     uint64          icntt;
 116     uint64          finst;
 117     uint64          simstart;
 118     double          starttime;
 119     uint64          tlimit;     /* Simulation time limit */
 120     uint64          pwdtime;    /* Cycles in power-down mode */
 121     uint64          nstore;     /* Number of load instructions */
 122     uint64          nload;      /* Number of store instructions */
 123     uint64          nannul;     /* Number of annuled instructions */
 124     uint64          nbranch;    /* Number of branch instructions */
 125     uint32          ildreg;     /* Destination of last load instruction */
 126     uint64          ildtime;    /* Last time point for load dependency */
 127
 128     int             rett_err;   /* IU in jmpl/restore error state (Rev.0) */
 129     int             jmpltime;
 130 };
 131
 132 struct evcell {
 133     void            (*cfunc) ();
 134     int32           arg;
 135     uint64          time;
 136     struct evcell  *nxt;
 137 };
 138
 139 struct estate {
 140     struct evcell   eq;
 141     struct evcell  *freeq;
 142     uint64          simtime;
 143 };
 144
 145 struct irqcell {
 146     void            (*callback) ();
 147     int32           arg;
 148 };
 149
 150
 151 #define OK 0
 152 #define TIME_OUT 1
 153 #define BPT_HIT 2
 154 #define ERROR 3
 155 #define CTRL_C 4
 156
 157 /* Prototypes  */
 158
 159 /* erc32.c */
 160 extern void     init_sim (void);
 161 extern void     reset (void);
 162 extern void     error_mode (uint32 pc);
 163 extern void     sim_halt (void);
 164 extern void     exit_sim (void);
 165 extern void     init_stdio (void);
 166 extern void     restore_stdio (void);
 167 extern int      memory_iread (uint32 addr, uint32 *data, int32 *ws);
 168 extern int      memory_read (int32 asi, uint32 addr, uint32 *data,
 169                              int32 sz, int32 *ws);
 170 extern int      memory_write (int32 asi, uint32 addr, uint32 *data,
 171                               int32 sz, int32 *ws);
 172 extern int      sis_memory_write (uint32 addr,
 173                                   const unsigned char *data, uint32 length);
 174 extern int      sis_memory_read (uint32 addr, char *data,
 175                                  uint32 length);
 176
 177 /* func.c */
 178 extern struct pstate  sregs;
 179 extern void     set_regi (struct pstate *sregs, int32 reg,
 180                           uint32 rval);
 181 extern void     get_regi (struct pstate *sregs, int32 reg, char *buf);
 182 extern int      exec_cmd (struct pstate *sregs, const char *cmd);
 183 extern void     reset_stat (struct pstate  *sregs);
 184 extern void     show_stat (struct pstate  *sregs);
 185 extern void     init_bpt (struct pstate  *sregs);
 186 extern void     init_signals (void);
 187
 188 struct disassemble_info;
 189 extern void     dis_mem (uint32 addr, uint32 len,
 190                          struct disassemble_info *info);
 191 extern void     event (void (*cfunc) (), int32 arg, uint64 delta);
 192 extern void     set_int (int32 level, void (*callback) (), int32 arg);
 193 extern void     advance_time (struct pstate  *sregs);
 194 extern uint32   now (void);
 195 extern int      wait_for_irq (void);
 196 extern int      check_bpt (struct pstate *sregs);
 197 extern void     reset_all (void);
 198 extern void     sys_reset (void);
 199 extern void     sys_halt (void);
 200 extern int      bfd_load (const char *fname);
 201 extern double   get_time (void);
 202
 203 /* exec.c */
 204 extern int      dispatch_instruction (struct pstate *sregs);
 205 extern int      execute_trap (struct pstate *sregs);
 206 extern int      check_interrupts (struct pstate  *sregs);
 207 extern void     init_regs (struct pstate *sregs);
 208
 209 /* interf.c */
 210 extern int      run_sim (struct pstate *sregs,
 211                          uint64 icount, int dis);
 212
 213 /* float.c */
 214 extern int      get_accex (void);
 215 extern void     clear_accex (void);
 216 extern void     set_fsr (uint32 fsr);
 217
 218 /* help.c */
 219 extern void     usage (void);
 220 extern void     gen_help (void);