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 "gdb/callback.h"
  25 #include "gdb/remote-sim.h"
  26 #include <stdint.h>
  27
  28 #include "end.h"
  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 /* FIXME: what about host compilers that don't support 64-bit ints? */
  56 typedef uint64_t uint64; /* 64-bit unsigned int */
  57 typedef int64_t int64;  /* 64-bit signed int */
  58
  59 struct pstate {
  60
  61     float64         fd[16];     /* FPU registers */
  62 #ifdef HOST_LITTLE_ENDIAN_FLOAT
  63     float32         fs[32];
  64     float32        *fdp;
  65 #else
  66     float32        *fs;
  67 #endif
  68     int32          *fsi;
  69     uint32          fsr;
  70     int32           fpstate;
  71     uint32          fpq[FPUQN * 2];
  72     uint32          fpqn;
  73     uint32          ftime;
  74     uint32          flrd;
  75     uint32          frd;
  76     uint32          frs1;
  77     uint32          frs2;
  78     uint32          fpu_pres;   /* FPU present (0 = No, 1 = Yes) */
  79
  80     uint32          psr;        /* IU registers */
  81     uint32          tbr;
  82     uint32          wim;
  83     uint32          g[8];
  84     uint32          r[128];
  85     uint32          y;
  86     uint32          asr17;      /* Single vector trapping */
  87     uint32          pc, npc;
  88
  89
  90     uint32          trap;       /* Current trap type */
  91     uint32          annul;      /* Instruction annul */
  92     uint32          data;       /* Loaded data       */
  93     uint32          inst;       /* Current instruction */
  94     uint32          asi;        /* Current ASI */
  95     uint32          err_mode;   /* IU error mode */
  96     uint32          breakpoint;
  97     uint32          bptnum;
  98     uint32          bphit;
  99     uint32          bpts[BPT_MAX];      /* Breakpoints */
 100
 101     uint32          ltime;      /* Load interlock time */
 102     uint32          hold;       /* IU hold cycles in current inst */
 103     uint32          fhold;      /* FPU hold cycles in current inst */
 104     uint32          icnt;       /* Instruction cycles in curr inst */
 105
 106     uint32          histlen;    /* Trace history management */
 107     uint32          histind;
 108     struct histype *histbuf;
 109     float32         freq;       /* Simulated processor frequency */
 110
 111
 112     uint64          tottime;
 113     uint64          ninst;
 114     uint64          fholdt;
 115     uint64          holdt;
 116     uint64          icntt;
 117     uint64          finst;
 118     uint64          simstart;
 119     uint64          starttime;
 120     uint64          tlimit;     /* Simulation time limit */
 121     uint64          pwdtime;    /* Cycles in power-down mode */
 122     uint64          nstore;     /* Number of load instructions */
 123     uint64          nload;      /* Number of store instructions */
 124     uint64          nannul;     /* Number of annuled instructions */
 125     uint64          nbranch;    /* Number of branch instructions */
 126     uint32          ildreg;     /* Destination of last load instruction */
 127     uint64          ildtime;    /* Last time point for load dependency */
 128
 129     int             rett_err;   /* IU in jmpl/restore error state (Rev.0) */
 130     int             jmpltime;
 131 };
 132
 133 struct evcell {
 134     void            (*cfunc) ();
 135     int32           arg;
 136     uint64          time;
 137     struct evcell  *nxt;
 138 };
 139
 140 struct estate {
 141     struct evcell   eq;
 142     struct evcell  *freeq;
 143     uint64          simtime;
 144 };
 145
 146 struct irqcell {
 147     void            (*callback) ();
 148     int32           arg;
 149 };
 150
 151
 152 #define OK 0
 153 #define TIME_OUT 1
 154 #define BPT_HIT 2
 155 #define ERROR 3
 156 #define CTRL_C 4
 157
 158 /* Prototypes  */
 159
 160 /* erc32.c */
 161 extern void     init_sim PARAMS ((void));
 162 extern void     reset PARAMS ((void));
 163 extern void     error_mode PARAMS ((uint32 pc));
 164 extern void     sim_halt PARAMS ((void));
 165 extern void     exit_sim PARAMS ((void));
 166 extern void     init_stdio PARAMS ((void));
 167 extern void     restore_stdio PARAMS ((void));
 168 extern int      memory_read PARAMS ((int32 asi, uint32 addr, uint32 *data,
 169                                      int32 sz, int32 *ws));
 170 extern int      memory_write PARAMS ((int32 asi, uint32 addr, uint32 *data,
 171                                     int32 sz, int32 *ws));
 172 extern int      sis_memory_write PARAMS ((uint32 addr,
 173                                     const unsigned char *data, uint32 length));
 174 extern int      sis_memory_read PARAMS ((uint32 addr, char *data,
 175                                          uint32 length));
 176
 177 /* func.c */
 178 extern void     set_regi PARAMS ((struct pstate *sregs, int32 reg,
 179                                   uint32 rval));
 180 extern void     get_regi PARAMS ((struct pstate *sregs, int32 reg, char *buf));
 181 extern int      exec_cmd PARAMS ((struct pstate *sregs, char *cmd));
 182 extern void     reset_stat PARAMS ((struct pstate  *sregs));
 183 extern void     show_stat PARAMS ((struct pstate  *sregs));
 184 extern void     init_bpt PARAMS ((struct pstate  *sregs));
 185 extern void     init_signals PARAMS ((void));
 186
 187 struct disassemble_info;
 188 extern void     dis_mem PARAMS ((uint32 addr, uint32 len,
 189                                  struct disassemble_info *info));
 190 extern void     event PARAMS ((void (*cfunc) (), int32 arg, uint64 delta));
 191 extern void     set_int PARAMS ((int32 level, void (*callback) (), int32 arg));
 192 extern void     advance_time PARAMS ((struct pstate  *sregs));
 193 extern uint32   now PARAMS ((void));
 194 extern int      wait_for_irq PARAMS ((void));
 195 extern int      check_bpt PARAMS ((struct pstate *sregs));
 196 extern void     reset_all PARAMS ((void));
 197 extern void     sys_reset PARAMS ((void));
 198 extern void     sys_halt PARAMS ((void));
 199 extern int      bfd_load PARAMS ((char *fname));
 200
 201 /* exec.c */
 202 extern int      dispatch_instruction PARAMS ((struct pstate *sregs));
 203 extern int      execute_trap PARAMS ((struct pstate *sregs));
 204 extern int      check_interrupts PARAMS ((struct pstate  *sregs));
 205 extern void     init_regs PARAMS ((struct pstate *sregs));
 206
 207 /* interf.c */
 208 extern int      run_sim PARAMS ((struct pstate *sregs,
 209                                  uint64 icount, int dis));
 210
 211 /* float.c */
 212 extern int      get_accex PARAMS ((void));
 213 extern void     clear_accex PARAMS ((void));
 214 extern void     set_fsr PARAMS ((uint32 fsr));
 215
 216 /* help.c */
 217 extern void     usage PARAMS ((void));
 218 extern void     gen_help PARAMS ((void));