[deliverable/binutils-gdb.git] / sim / erc32 / sis.c

/*
 * This file is part of SIS.
 * 
 * SIS, 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 3 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, see <http://www.gnu.org/licenses/>.
 * 
 */

#include "config.h"
#include <signal.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#include <sys/fcntl.h>
#include "sis.h"
#include <dis-asm.h>
#include "sim-config.h"

#define	VAL(x)	strtol(x,(char **)NULL,0)

/* Structures and functions from readline library */

#include "readline/readline.h"
#include "readline/history.h"

/* Command history buffer length - MUST be binary */
#define HIST_LEN	64

extern struct disassemble_info dinfo;
extern struct pstate sregs;
extern struct estate ebase;

extern int      ctrl_c;
extern int      nfp;
extern int      ift;
extern int      wrp;
extern int      rom8;
extern int      uben;
extern int      sis_verbose;
extern char    *sis_version;
extern struct estate ebase;
extern struct evcell evbuf[];
extern struct irqcell irqarr[];
extern int      irqpend, ext_irl;
extern int      termsave;
extern int      sparclite;
extern int      dumbio;
extern char     uart_dev1[];
extern char     uart_dev2[];
extern uint32   last_load_addr;

#ifdef ERA
extern int era;
#endif

int
run_sim(sregs, icount, dis)
    struct pstate  *sregs;
    uint64          icount;
    int             dis;
{
    int             irq, mexc, deb, asi;

    sregs->starttime = get_time();
    init_stdio();
    if (sregs->err_mode) icount = 0;
    deb = dis || sregs->histlen || sregs->bptnum;
    irq = 0;
    while (icount > 0) {

	if (sregs->psr & 0x080)
	    asi = 9;
   	else
	    asi = 8;
	mexc = memory_read(asi, sregs->pc, &sregs->inst, 2, &sregs->hold);
	sregs->icnt = 1;
	if (sregs->annul) {
	    sregs->annul = 0;
	    sregs->pc = sregs->npc;
	    sregs->npc = sregs->npc + 4;
	} else {
	    sregs->fhold = 0;
	    if (ext_irl) irq = check_interrupts(sregs);
	    if (!irq) {
		if (mexc) {
		    sregs->trap = I_ACC_EXC;
		} else {
		    if (deb) {
	    		if ((sregs->bphit = check_bpt(sregs)) != 0) {
            		    restore_stdio();
	    		    return (BPT_HIT);
	    		}
		        if (sregs->histlen) {
			    sregs->histbuf[sregs->histind].addr = sregs->pc;
			    sregs->histbuf[sregs->histind].time = ebase.simtime;
			    sregs->histind++;
			    if (sregs->histind >= sregs->histlen)
			        sregs->histind = 0;
		        }
		        if (dis) {
			    printf(" %8u ", ebase.simtime);
			    dis_mem(sregs->pc, 1, &dinfo);
		        }
		    }
		    dispatch_instruction(sregs);
		    icount--;
		}
	    }
	    if (sregs->trap) {
		irq = 0;
		sregs->err_mode = execute_trap(sregs);
        	if (sregs->err_mode) {
	            error_mode(sregs->pc);
	            icount = 0;
	        }
	    }
	}
	advance_time(sregs);
	if (ctrl_c || (sregs->tlimit <= ebase.simtime)) {
	    icount = 0;
	    if (sregs->tlimit <= ebase.simtime) sregs->tlimit = -1;
	}
    }
    sregs->tottime += get_time() - sregs->starttime;
    restore_stdio();
    if (sregs->err_mode)
	return (ERROR);
    if (ctrl_c) {
	ctrl_c = 0;
	return (CTRL_C);
    }
    return (TIME_OUT);
}

int
main(argc, argv)
    int             argc;
    char          **argv;
{

    int             cont = 1;
    int             stat = 1;
    int             freq = 14;
    int             copt = 0;

    char           *cfile, *bacmd;
    char           *cmdq[HIST_LEN];
    int             cmdi = 0;
    int             i;
    int             lfile = 0;

    cfile = 0;
    for (i = 0; i < 64; i++)
	cmdq[i] = 0;
    printf("\n SIS - SPARC instruction simulator %s,  copyright Jiri Gaisler 1995\n", sis_version);
    printf(" Bug-reports to jgais@wd.estec.esa.nl\n\n");
    while (stat < argc) {
	if (argv[stat][0] == '-') {
	    if (strcmp(argv[stat], "-v") == 0) {
		sis_verbose = 1;
	    } else if (strcmp(argv[stat], "-c") == 0) {
		if ((stat + 1) < argc) {
		    copt = 1;
		    cfile = argv[++stat];
		}
	    } else if (strcmp(argv[stat], "-nfp") == 0)
		nfp = 1;
	    else if (strcmp(argv[stat], "-ift") == 0)
		ift = 1;
	    else if (strcmp(argv[stat], "-wrp") == 0)
		wrp = 1;
	    else if (strcmp(argv[stat], "-rom8") == 0)
		rom8 = 1;
	    else if (strcmp(argv[stat], "-uben") == 0)
		uben = 1;
	    else if (strcmp(argv[stat], "-uart1") == 0) {
		if ((stat + 1) < argc)
		    strcpy(uart_dev1, argv[++stat]);
	    } else if (strcmp(argv[stat], "-uart2") == 0) {
		if ((stat + 1) < argc)
		    strcpy(uart_dev2, argv[++stat]);
	    } else if (strcmp(argv[stat], "-freq") == 0) {
		if ((stat + 1) < argc)
		    freq = VAL(argv[++stat]);
	    } else if (strcmp(argv[stat], "-sparclite") == 0) {
		sparclite = 1;
#ifdef ERA
	    } else if (strcmp(argv[stat], "-era") == 0) {
		era = 1;
#endif
            } else if (strcmp(argv[stat], "-dumbio") == 0) {
		dumbio = 1;
	    } else {
		printf("unknown option %s\n", argv[stat]);
		usage();
		exit(1);
	    }
	} else {
	    lfile = stat;
	}
	stat++;
    }
    if (nfp)
	printf("FPU disabled\n");
#ifdef ERA
    if (era)
	printf("ERA ECC emulation enabled\n");
#endif
    sregs.freq = freq;

    INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
    dinfo.endian = BFD_ENDIAN_BIG;

    termsave = fcntl(0, F_GETFL, 0);
    using_history();
    init_signals();
    ebase.simtime = 0;
    reset_all();
    init_bpt(&sregs);
    init_sim();
    if (lfile)
        last_load_addr = bfd_load(argv[lfile]);
#ifdef STAT
    reset_stat(&sregs);
#endif

    if (copt) {
	bacmd = (char *) malloc(256);
	strcpy(bacmd, "batch ");
	strcat(bacmd, cfile);
	exec_cmd(&sregs, bacmd);
    }
    while (cont) {

	if (cmdq[cmdi] != 0) {
#if 0
	    remove_history(cmdq[cmdi]);
#else
	    remove_history(cmdi);
#endif
	    free(cmdq[cmdi]);
	    cmdq[cmdi] = 0;
	}
	cmdq[cmdi] = readline("sis> ");
	if (cmdq[cmdi] && *cmdq[cmdi])
	    add_history(cmdq[cmdi]);
	if (cmdq[cmdi])
	    stat = exec_cmd(&sregs, cmdq[cmdi]);
	else {
	    puts("\n");
	    exit(0);
	}
	switch (stat) {
	case OK:
	    break;
	case CTRL_C:
	    printf("\b\bInterrupt!\n");
	case TIME_OUT:
	    printf(" Stopped at time %d (%.3f ms)\n", ebase.simtime, 
	      ((double) ebase.simtime / (double) sregs.freq) / 1000.0);
	    break;
	case BPT_HIT:
	    printf("breakpoint at 0x%08x reached\n", sregs.pc);
	    sregs.bphit = 1;
	    break;
	case ERROR:
	    printf("IU in error mode (%d)\n", sregs.trap);
	    stat = 0;
	    printf(" %8d ", ebase.simtime);
	    dis_mem(sregs.pc, 1, &dinfo);
	    break;
	default:
	    break;
	}
	ctrl_c = 0;
	stat = OK;

	cmdi = (cmdi + 1) & (HIST_LEN - 1);

    }
    return 0;
}
Commit	Line	Data
c906108c SS	1	/*
	2	* This file is part of SIS.
	3	*
	4	* SIS, SPARC instruction simulator. Copyright (C) 1995 Jiri Gaisler, European
	5	* 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
3fd725ef	9	* Software Foundation; either version 3 of the License, or (at your option)
c906108c SS	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
51b318de	18	* this program; if not, see <http://www.gnu.org/licenses/>.
c906108c SS	19	*
	20	*/
	21
	22	#include "config.h"
	23	#include <signal.h>
	24	#include <string.h>
	25	#ifdef HAVE_STDLIB_H
	26	#include <stdlib.h>
	27	#endif
	28	#include <stdio.h>
c906108c SS	29	#include <sys/fcntl.h>
	30	#include "sis.h"
	31	#include <dis-asm.h>
	32	#include "sim-config.h"
	33
c906108c SS	34	#define VAL(x) strtol(x,(char **)NULL,0)
	35
	36	/* Structures and functions from readline library */
	37
5634e839 JG	38	#include "readline/readline.h"
5634e839 JG	39	#include "readline/history.h"
c906108c SS	40
	41	/* Command history buffer length - MUST be binary */
	42	#define HIST_LEN 64
	43
	44	extern struct disassemble_info dinfo;
	45	extern struct pstate sregs;
	46	extern struct estate ebase;
	47
	48	extern int ctrl_c;
	49	extern int nfp;
	50	extern int ift;
	51	extern int wrp;
	52	extern int rom8;
	53	extern int uben;
	54	extern int sis_verbose;
	55	extern char *sis_version;
	56	extern struct estate ebase;
	57	extern struct evcell evbuf[];
	58	extern struct irqcell irqarr[];
	59	extern int irqpend, ext_irl;
	60	extern int termsave;
	61	extern int sparclite;
	62	extern int dumbio;
	63	extern char uart_dev1[];
	64	extern char uart_dev2[];
	65	extern uint32 last_load_addr;
	66
	67	#ifdef ERA
	68	extern int era;
	69	#endif
	70
	71	int
	72	run_sim(sregs, icount, dis)
	73	struct pstate *sregs;
94110024	74	uint64 icount;
c906108c SS	75	int dis;
	76	{
	77	int irq, mexc, deb, asi;
	78
96d67095	79	sregs->starttime = get_time();
c906108c SS	80	init_stdio();
	81	if (sregs->err_mode) icount = 0;
	82	deb = dis \|\| sregs->histlen \|\| sregs->bptnum;
	83	irq = 0;
	84	while (icount > 0) {
	85
	86	if (sregs->psr & 0x080)
	87	asi = 9;
	88	else
	89	asi = 8;
	90	mexc = memory_read(asi, sregs->pc, &sregs->inst, 2, &sregs->hold);
	91	sregs->icnt = 1;
	92	if (sregs->annul) {
	93	sregs->annul = 0;
	94	sregs->pc = sregs->npc;
	95	sregs->npc = sregs->npc + 4;
	96	} else {
	97	sregs->fhold = 0;
	98	if (ext_irl) irq = check_interrupts(sregs);
	99	if (!irq) {
	100	if (mexc) {
	101	sregs->trap = I_ACC_EXC;
	102	} else {
	103	if (deb) {
	104	if ((sregs->bphit = check_bpt(sregs)) != 0) {
	105	restore_stdio();
	106	return (BPT_HIT);
	107	}
	108	if (sregs->histlen) {
	109	sregs->histbuf[sregs->histind].addr = sregs->pc;
	110	sregs->histbuf[sregs->histind].time = ebase.simtime;
	111	sregs->histind++;
	112	if (sregs->histind >= sregs->histlen)
	113	sregs->histind = 0;
	114	}
	115	if (dis) {
	116	printf(" %8u ", ebase.simtime);
	117	dis_mem(sregs->pc, 1, &dinfo);
	118	}
	119	}
	120	dispatch_instruction(sregs);
	121	icount--;
	122	}
	123	}
	124	if (sregs->trap) {
	125	irq = 0;
	126	sregs->err_mode = execute_trap(sregs);
	127	if (sregs->err_mode) {
	128	error_mode(sregs->pc);
	129	icount = 0;
	130	}
	131	}
	132	}
	133	advance_time(sregs);
	134	if (ctrl_c \|\| (sregs->tlimit <= ebase.simtime)) {
	135	icount = 0;
	136	if (sregs->tlimit <= ebase.simtime) sregs->tlimit = -1;
	137	}
	138	}
96d67095	139	sregs->tottime += get_time() - sregs->starttime;
c906108c SS	140	restore_stdio();
	141	if (sregs->err_mode)
	142	return (ERROR);
	143	if (ctrl_c) {
	144	ctrl_c = 0;
	145	return (CTRL_C);
	146	}
	147	return (TIME_OUT);
	148	}
	149
	150	int
	151	main(argc, argv)
	152	int argc;
	153	char **argv;
	154	{
	155
	156	int cont = 1;
	157	int stat = 1;
	158	int freq = 14;
	159	int copt = 0;
	160
	161	char cfile, bacmd;
	162	char *cmdq[HIST_LEN];
	163	int cmdi = 0;
	164	int i;
e26473a1	165	int lfile = 0;
c906108c SS	166
	167	cfile = 0;
	168	for (i = 0; i < 64; i++)
	169	cmdq[i] = 0;
14e1f957	170	printf("\n SIS - SPARC instruction simulator %s, copyright Jiri Gaisler 1995\n", sis_version);
c906108c SS	171	printf(" Bug-reports to jgais@wd.estec.esa.nl\n\n");
	172	while (stat < argc) {
	173	if (argv[stat][0] == '-') {
	174	if (strcmp(argv[stat], "-v") == 0) {
	175	sis_verbose = 1;
	176	} else if (strcmp(argv[stat], "-c") == 0) {
	177	if ((stat + 1) < argc) {
	178	copt = 1;
	179	cfile = argv[++stat];
	180	}
	181	} else if (strcmp(argv[stat], "-nfp") == 0)
	182	nfp = 1;
	183	else if (strcmp(argv[stat], "-ift") == 0)
	184	ift = 1;
	185	else if (strcmp(argv[stat], "-wrp") == 0)
	186	wrp = 1;
	187	else if (strcmp(argv[stat], "-rom8") == 0)
	188	rom8 = 1;
	189	else if (strcmp(argv[stat], "-uben") == 0)
	190	uben = 1;
	191	else if (strcmp(argv[stat], "-uart1") == 0) {
	192	if ((stat + 1) < argc)
	193	strcpy(uart_dev1, argv[++stat]);
	194	} else if (strcmp(argv[stat], "-uart2") == 0) {
	195	if ((stat + 1) < argc)
	196	strcpy(uart_dev2, argv[++stat]);
	197	} else if (strcmp(argv[stat], "-freq") == 0) {
	198	if ((stat + 1) < argc)
	199	freq = VAL(argv[++stat]);
	200	} else if (strcmp(argv[stat], "-sparclite") == 0) {
	201	sparclite = 1;
	202	#ifdef ERA
	203	} else if (strcmp(argv[stat], "-era") == 0) {
	204	era = 1;
	205	#endif
	206	} else if (strcmp(argv[stat], "-dumbio") == 0) {
	207	dumbio = 1;
	208	} else {
	209	printf("unknown option %s\n", argv[stat]);
	210	usage();
	211	exit(1);
	212	}
	213	} else {
e26473a1	214	lfile = stat;
c906108c SS	215	}
	216	stat++;
	217	}
	218	if (nfp)
	219	printf("FPU disabled\n");
	220	#ifdef ERA
	221	if (era)
	222	printf("ERA ECC emulation enabled\n");
	223	#endif
	224	sregs.freq = freq;
	225
	226	INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
	227	dinfo.endian = BFD_ENDIAN_BIG;
	228
	229	termsave = fcntl(0, F_GETFL, 0);
	230	using_history();
	231	init_signals();
	232	ebase.simtime = 0;
	233	reset_all();
	234	init_bpt(&sregs);
	235	init_sim();
e26473a1 JG	236	if (lfile)
e26473a1 JG	237	last_load_addr = bfd_load(argv[lfile]);
c906108c SS	238	#ifdef STAT
	239	reset_stat(&sregs);
	240	#endif
	241
	242	if (copt) {
	243	bacmd = (char *) malloc(256);
	244	strcpy(bacmd, "batch ");
	245	strcat(bacmd, cfile);
	246	exec_cmd(&sregs, bacmd);
	247	}
	248	while (cont) {
	249
	250	if (cmdq[cmdi] != 0) {
	251	#if 0
	252	remove_history(cmdq[cmdi]);
	253	#else
	254	remove_history(cmdi);
	255	#endif
	256	free(cmdq[cmdi]);
	257	cmdq[cmdi] = 0;
	258	}
	259	cmdq[cmdi] = readline("sis> ");
	260	if (cmdq[cmdi] && *cmdq[cmdi])
	261	add_history(cmdq[cmdi]);
	262	if (cmdq[cmdi])
	263	stat = exec_cmd(&sregs, cmdq[cmdi]);
	264	else {
	265	puts("\n");
	266	exit(0);
	267	}
	268	switch (stat) {
	269	case OK:
	270	break;
	271	case CTRL_C:
	272	printf("\b\bInterrupt!\n");
	273	case TIME_OUT:
	274	printf(" Stopped at time %d (%.3f ms)\n", ebase.simtime,
	275	((double) ebase.simtime / (double) sregs.freq) / 1000.0);
	276	break;
	277	case BPT_HIT:
	278	printf("breakpoint at 0x%08x reached\n", sregs.pc);
	279	sregs.bphit = 1;
	280	break;
	281	case ERROR:
	282	printf("IU in error mode (%d)\n", sregs.trap);
	283	stat = 0;
	284	printf(" %8d ", ebase.simtime);
	285	dis_mem(sregs.pc, 1, &dinfo);
	286	break;
	287	default:
	288	break;
	289	}
	290	ctrl_c = 0;
	291	stat = OK;
	292
	293	cmdi = (cmdi + 1) & (HIST_LEN - 1);
	294
	295	}
	296	return 0;
	297	}
	298