sim/erc32/sis.h

   1 /*
   2  * This file is part of SIS.
   3  *
   4  * ERC32SIM, SPARC instruction simulator. Copyright (C) 1995 Jiri Gaisler,
   5  * European Space Agency
   6  *
   7  * This program is free software; you can redistribute it and/or modify it under
   8  * the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 675
  19  * Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #include "ansidecl.h"
  24 #include "callback.h"
  25 #include "remote-sim.h"
  26
  27 #include "end.h"
  28
  29 #define I_ACC_EXC 1
  30
  31 /* Maximum events in event queue */
  32 #define EVENT_MAX       256
  33
  34 /* Maximum # of floating point queue */
  35 #define FPUQN   1
  36
  37 /* Maximum # of breakpoints */
  38 #define BPT_MAX 256
  39
  40 struct histype {
  41     unsigned        addr;
  42     unsigned        time;
  43 };
  44
  45 /* type definitions */
  46
  47 typedef short int int16;        /* 16-bit signed int */
  48 typedef unsigned short int uint16;      /* 16-bit unsigned int */
  49 typedef int     int32;          /* 32-bit signed int */
  50 typedef unsigned int uint32;    /* 32-bit unsigned int */
  51 typedef float   float32;        /* 32-bit float */
  52 typedef double  float64;        /* 64-bit float */
  53
  54 /* FIXME: what about host compilers that don't support 64-bit ints? */
  55 typedef unsigned long long uint64; /* 64-bit unsigned int */
  56 typedef long long int64;        /* 64-bit signed int */
  57
  58 struct pstate {
  59
  60     float64         fd[16];     /* FPU registers */
  61 #ifdef HOST_LITTLE_ENDIAN_FLOAT
  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     uint32          tottime;
 112     uint32          ninst;
 113     uint32          fholdt;
 114     uint32          holdt;
 115     uint32          icntt;
 116     uint32          finst;
 117     uint32          simstart;
 118     uint32          starttime;
 119     uint32          tlimit;     /* Simulation time limit */
 120     uint32          pwdtime;    /* Cycles in power-down mode */
 121     uint32          nstore;     /* Number of load instructions */
 122     uint32          nload;      /* Number of store instructions */
 123     uint32          nannul;     /* Number of annuled instructions */
 124     uint32          nbranch;    /* Number of branch instructions */
 125     uint32          ildreg;     /* Destination of last load instruction */
 126     uint32          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     uint32          time;
 136     struct evcell  *nxt;
 137 };
 138
 139 struct estate {
 140     struct evcell   eq;
 141     struct evcell  *freeq;
 142     uint32          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 PARAMS ((void));
 161 extern void     reset PARAMS ((void));
 162 extern void     error_mode PARAMS ((uint32 pc));
 163 extern void     sim_halt PARAMS ((void));
 164 extern void     exit_sim PARAMS ((void));
 165 extern void     init_stdio PARAMS ((void));
 166 extern void     restore_stdio PARAMS ((void));
 167 extern int      memory_read PARAMS ((int32 asi, uint32 addr, uint32 *data,
 168                                      int32 sz, int32 *ws));
 169 extern int      memory_write PARAMS ((int32 asi, uint32 addr, uint32 *data,
 170                                     int32 sz, int32 *ws));
 171 extern int      sis_memory_write PARAMS ((uint32 addr, char *data,
 172                                           uint32 length));
 173 extern int      sis_memory_read PARAMS ((uint32 addr, char *data,
 174                                          uint32 length));
 175
 176 /* func.c */
 177 extern void     set_regi PARAMS ((struct pstate *sregs, int32 reg,
 178                                   uint32 rval));
 179 extern void     get_regi PARAMS ((struct pstate *sregs, int32 reg, char *buf));
 180 extern int      exec_cmd PARAMS ((struct pstate *sregs, char *cmd));
 181 extern void     reset_stat PARAMS ((struct pstate  *sregs));
 182 extern void     show_stat PARAMS ((struct pstate  *sregs));
 183 extern void     init_bpt PARAMS ((struct pstate  *sregs));
 184 extern void     init_signals PARAMS ((void));
 185
 186 struct disassemble_info;
 187 extern void     dis_mem PARAMS ((uint32 addr, uint32 len,
 188                                  struct disassemble_info *info));
 189 extern void     event PARAMS ((void (*cfunc) (), int32 arg, uint32 delta));
 190 extern void     set_int PARAMS ((int32 level, void (*callback) (), int32 arg));
 191 extern void     advance_time PARAMS ((struct pstate  *sregs));
 192 extern uint32   now PARAMS ((void));
 193 extern int      wait_for_irq PARAMS ((void));
 194 extern int      check_bpt PARAMS ((struct pstate *sregs));
 195 extern void     reset_all PARAMS ((void));
 196 extern void     sys_reset PARAMS ((void));
 197 extern void     sys_halt PARAMS ((void));
 198 extern int      bfd_load PARAMS ((char *fname));
 199
 200 /* exec.c */
 201 extern int      dispatch_instruction PARAMS ((struct pstate *sregs));
 202 extern int      execute_trap PARAMS ((struct pstate *sregs));
 203 extern int      check_interrupts PARAMS ((struct pstate  *sregs));
 204 extern void     init_regs PARAMS ((struct pstate *sregs));
 205
 206 /* interf.c */
 207 extern int      run_sim PARAMS ((struct pstate *sregs,
 208                                  unsigned int icount, int dis));
 209
 210 /* float.c */
 211 extern int      get_accex PARAMS ((void));
 212 extern void     clear_accex PARAMS ((void));
 213 extern void     set_fsr PARAMS ((uint32 fsr));
 214
 215 /* help.c */
 216 extern void     usage PARAMS ((void));
 217 extern void     gen_help PARAMS ((void));