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