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/*
* This file is part of SIS.
*
* ERC32SIM, SPARC instruction simulator. Copyright (C) 1995 Jiri Gaisler,
* European Space Agency
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 675
* Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "ansidecl.h"
#include "callback.h"
#include "remote-sim.h"
#include "end.h"
#define I_ACC_EXC 1
/* Maximum events in event queue */
#define EVENT_MAX 256
/* Maximum # of floating point queue */
#define FPUQN 1
/* Maximum # of breakpoints */
#define BPT_MAX 256
struct histype {
unsigned addr;
unsigned time;
};
/* type definitions */
typedef short int int16; /* 16-bit signed int */
typedef unsigned short int uint16; /* 16-bit unsigned int */
typedef int int32; /* 32-bit signed int */
typedef unsigned int uint32; /* 32-bit unsigned int */
typedef float float32; /* 32-bit float */
typedef double float64; /* 64-bit float */
/* FIXME: what about host compilers that don't support 64-bit ints? */
typedef unsigned long long uint64; /* 64-bit unsigned int */
typedef long long int64; /* 64-bit signed int */
struct pstate {
float64 fd[16]; /* FPU registers */
#ifdef HOST_LITTLE_ENDIAN_FLOAT
float32 fs[32];
float32 *fdp;
#else
float32 *fs;
#endif
int32 *fsi;
uint32 fsr;
int32 fpstate;
uint32 fpq[FPUQN * 2];
uint32 fpqn;
uint32 ftime;
uint32 flrd;
uint32 frd;
uint32 frs1;
uint32 frs2;
uint32 fpu_pres; /* FPU present (0 = No, 1 = Yes) */
uint32 psr; /* IU registers */
uint32 tbr;
uint32 wim;
uint32 g[8];
uint32 r[128];
uint32 y;
uint32 asr17; /* Single vector trapping */
uint32 pc, npc;
uint32 trap; /* Current trap type */
uint32 annul; /* Instruction annul */
uint32 data; /* Loaded data */
uint32 inst; /* Current instruction */
uint32 asi; /* Current ASI */
uint32 err_mode; /* IU error mode */
uint32 breakpoint;
uint32 bptnum;
uint32 bphit;
uint32 bpts[BPT_MAX]; /* Breakpoints */
uint32 ltime; /* Load interlock time */
uint32 hold; /* IU hold cycles in current inst */
uint32 fhold; /* FPU hold cycles in current inst */
uint32 icnt; /* Instruction cycles in curr inst */
uint32 histlen; /* Trace history management */
uint32 histind;
struct histype *histbuf;
float32 freq; /* Simulated processor frequency */
uint32 tottime;
uint32 ninst;
uint32 fholdt;
uint32 holdt;
uint32 icntt;
uint32 finst;
uint32 simstart;
uint32 starttime;
uint32 tlimit; /* Simulation time limit */
uint32 pwdtime; /* Cycles in power-down mode */
uint32 nstore; /* Number of load instructions */
uint32 nload; /* Number of store instructions */
uint32 nannul; /* Number of annuled instructions */
uint32 nbranch; /* Number of branch instructions */
uint32 ildreg; /* Destination of last load instruction */
uint32 ildtime; /* Last time point for load dependency */
int rett_err; /* IU in jmpl/restore error state (Rev.0) */
int jmpltime;
};
struct evcell {
void (*cfunc) ();
int32 arg;
uint32 time;
struct evcell *nxt;
};
struct estate {
struct evcell eq;
struct evcell *freeq;
uint32 simtime;
};
struct irqcell {
void (*callback) ();
int32 arg;
};
#define OK 0
#define TIME_OUT 1
#define BPT_HIT 2
#define ERROR 3
#define CTRL_C 4
/* Prototypes */
/* erc32.c */
extern void init_sim PARAMS ((void));
extern void reset PARAMS ((void));
extern void error_mode PARAMS ((uint32 pc));
extern void sim_halt PARAMS ((void));
extern void exit_sim PARAMS ((void));
extern void init_stdio PARAMS ((void));
extern void restore_stdio PARAMS ((void));
extern int memory_read PARAMS ((int32 asi, uint32 addr, uint32 *data,
int32 sz, int32 *ws));
extern int memory_write PARAMS ((int32 asi, uint32 addr, uint32 *data,
int32 sz, int32 *ws));
extern int sis_memory_write PARAMS ((uint32 addr, char *data,
uint32 length));
extern int sis_memory_read PARAMS ((uint32 addr, char *data,
uint32 length));
/* func.c */
extern void set_regi PARAMS ((struct pstate *sregs, int32 reg,
uint32 rval));
extern void get_regi PARAMS ((struct pstate *sregs, int32 reg, char *buf));
extern int exec_cmd PARAMS ((struct pstate *sregs, char *cmd));
extern void reset_stat PARAMS ((struct pstate *sregs));
extern void show_stat PARAMS ((struct pstate *sregs));
extern void init_bpt PARAMS ((struct pstate *sregs));
extern void init_signals PARAMS ((void));
struct disassemble_info;
extern void dis_mem PARAMS ((uint32 addr, uint32 len,
struct disassemble_info *info));
extern void event PARAMS ((void (*cfunc) (), int32 arg, uint32 delta));
extern void set_int PARAMS ((int32 level, void (*callback) (), int32 arg));
extern void advance_time PARAMS ((struct pstate *sregs));
extern uint32 now PARAMS ((void));
extern int wait_for_irq PARAMS ((void));
extern int check_bpt PARAMS ((struct pstate *sregs));
extern void reset_all PARAMS ((void));
extern void sys_reset PARAMS ((void));
extern void sys_halt PARAMS ((void));
extern int bfd_load PARAMS ((char *fname));
/* exec.c */
extern int dispatch_instruction PARAMS ((struct pstate *sregs));
extern int execute_trap PARAMS ((struct pstate *sregs));
extern int check_interrupts PARAMS ((struct pstate *sregs));
extern void init_regs PARAMS ((struct pstate *sregs));
/* interf.c */
extern int run_sim PARAMS ((struct pstate *sregs,
unsigned int icount, int dis));
/* float.c */
extern int get_accex PARAMS ((void));
extern void clear_accex PARAMS ((void));
extern void set_fsr PARAMS ((uint32 fsr));
/* help.c */
extern void usage PARAMS ((void));
extern void gen_help PARAMS ((void));
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