[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"
#include <inttypes.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(" %8" PRIu64 " ", 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 if (strcmp(argv[stat], "-v") == 0) {
		sis_verbose += 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 %" PRIu64 " (%.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(" %8" PRIu64 " ", 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"
638fcdad	33	#include <inttypes.h>
c906108c	34
c906108c SS	35	#define VAL(x) strtol(x,(char **)NULL,0)
	36
	37	/* Structures and functions from readline library */
	38
5634e839 JG	39	#include "readline/readline.h"
5634e839 JG	40	#include "readline/history.h"
c906108c SS	41
	42	/* Command history buffer length - MUST be binary */
	43	#define HIST_LEN 64
	44
	45	extern struct disassemble_info dinfo;
	46	extern struct pstate sregs;
	47	extern struct estate ebase;
	48
	49	extern int ctrl_c;
	50	extern int nfp;
	51	extern int ift;
	52	extern int wrp;
	53	extern int rom8;
	54	extern int uben;
	55	extern int sis_verbose;
	56	extern char *sis_version;
	57	extern struct estate ebase;
	58	extern struct evcell evbuf[];
	59	extern struct irqcell irqarr[];
	60	extern int irqpend, ext_irl;
	61	extern int termsave;
	62	extern int sparclite;
	63	extern int dumbio;
	64	extern char uart_dev1[];
	65	extern char uart_dev2[];
	66	extern uint32 last_load_addr;
	67
	68	#ifdef ERA
	69	extern int era;
	70	#endif
	71
	72	int
	73	run_sim(sregs, icount, dis)
	74	struct pstate *sregs;
94110024	75	uint64 icount;
c906108c SS	76	int dis;
	77	{
	78	int irq, mexc, deb, asi;
	79
96d67095	80	sregs->starttime = get_time();
c906108c SS	81	init_stdio();
	82	if (sregs->err_mode) icount = 0;
	83	deb = dis \|\| sregs->histlen \|\| sregs->bptnum;
	84	irq = 0;
	85	while (icount > 0) {
	86
	87	if (sregs->psr & 0x080)
	88	asi = 9;
	89	else
	90	asi = 8;
	91	mexc = memory_read(asi, sregs->pc, &sregs->inst, 2, &sregs->hold);
	92	sregs->icnt = 1;
	93	if (sregs->annul) {
	94	sregs->annul = 0;
	95	sregs->pc = sregs->npc;
	96	sregs->npc = sregs->npc + 4;
	97	} else {
	98	sregs->fhold = 0;
	99	if (ext_irl) irq = check_interrupts(sregs);
	100	if (!irq) {
	101	if (mexc) {
	102	sregs->trap = I_ACC_EXC;
	103	} else {
	104	if (deb) {
	105	if ((sregs->bphit = check_bpt(sregs)) != 0) {
	106	restore_stdio();
5831e29b	107	return BPT_HIT;
c906108c SS	108	}
	109	if (sregs->histlen) {
	110	sregs->histbuf[sregs->histind].addr = sregs->pc;
	111	sregs->histbuf[sregs->histind].time = ebase.simtime;
	112	sregs->histind++;
	113	if (sregs->histind >= sregs->histlen)
	114	sregs->histind = 0;
	115	}
	116	if (dis) {
638fcdad	117	printf(" %8" PRIu64 " ", ebase.simtime);
c906108c SS	118	dis_mem(sregs->pc, 1, &dinfo);
	119	}
	120	}
	121	dispatch_instruction(sregs);
	122	icount--;
	123	}
	124	}
	125	if (sregs->trap) {
	126	irq = 0;
	127	sregs->err_mode = execute_trap(sregs);
	128	if (sregs->err_mode) {
	129	error_mode(sregs->pc);
	130	icount = 0;
	131	}
	132	}
	133	}
	134	advance_time(sregs);
	135	if (ctrl_c \|\| (sregs->tlimit <= ebase.simtime)) {
	136	icount = 0;
	137	if (sregs->tlimit <= ebase.simtime) sregs->tlimit = -1;
	138	}
	139	}
96d67095	140	sregs->tottime += get_time() - sregs->starttime;
c906108c SS	141	restore_stdio();
c906108c SS	142	if (sregs->err_mode)
5831e29b	143	return ERROR;
c906108c SS	144	if (ctrl_c) {
c906108c SS	145	ctrl_c = 0;
5831e29b	146	return CTRL_C;
c906108c	147	}
5831e29b	148	return TIME_OUT;
c906108c SS	149	}
	150
	151	int
	152	main(argc, argv)
	153	int argc;
	154	char **argv;
	155	{
	156
	157	int cont = 1;
	158	int stat = 1;
	159	int freq = 14;
	160	int copt = 0;
	161
	162	char cfile, bacmd;
	163	char *cmdq[HIST_LEN];
	164	int cmdi = 0;
	165	int i;
e26473a1	166	int lfile = 0;
c906108c SS	167
	168	cfile = 0;
	169	for (i = 0; i < 64; i++)
	170	cmdq[i] = 0;
14e1f957	171	printf("\n SIS - SPARC instruction simulator %s, copyright Jiri Gaisler 1995\n", sis_version);
c906108c SS	172	printf(" Bug-reports to jgais@wd.estec.esa.nl\n\n");
	173	while (stat < argc) {
	174	if (argv[stat][0] == '-') {
	175	if (strcmp(argv[stat], "-v") == 0) {
	176	sis_verbose = 1;
	177	} else if (strcmp(argv[stat], "-c") == 0) {
	178	if ((stat + 1) < argc) {
	179	copt = 1;
	180	cfile = argv[++stat];
	181	}
	182	} else if (strcmp(argv[stat], "-nfp") == 0)
	183	nfp = 1;
	184	else if (strcmp(argv[stat], "-ift") == 0)
	185	ift = 1;
	186	else if (strcmp(argv[stat], "-wrp") == 0)
	187	wrp = 1;
	188	else if (strcmp(argv[stat], "-rom8") == 0)
	189	rom8 = 1;
	190	else if (strcmp(argv[stat], "-uben") == 0)
	191	uben = 1;
	192	else if (strcmp(argv[stat], "-uart1") == 0) {
	193	if ((stat + 1) < argc)
	194	strcpy(uart_dev1, argv[++stat]);
	195	} else if (strcmp(argv[stat], "-uart2") == 0) {
	196	if ((stat + 1) < argc)
	197	strcpy(uart_dev2, argv[++stat]);
	198	} else if (strcmp(argv[stat], "-freq") == 0) {
	199	if ((stat + 1) < argc)
	200	freq = VAL(argv[++stat]);
	201	} else if (strcmp(argv[stat], "-sparclite") == 0) {
	202	sparclite = 1;
	203	#ifdef ERA
	204	} else if (strcmp(argv[stat], "-era") == 0) {
	205	era = 1;
	206	#endif
	207	} else if (strcmp(argv[stat], "-dumbio") == 0) {
	208	dumbio = 1;
638fcdad JG	209	} else if (strcmp(argv[stat], "-v") == 0) {
638fcdad JG	210	sis_verbose += 1;
c906108c SS	211	} else {
	212	printf("unknown option %s\n", argv[stat]);
	213	usage();
	214	exit(1);
	215	}
	216	} else {
e26473a1	217	lfile = stat;
c906108c SS	218	}
	219	stat++;
	220	}
	221	if (nfp)
	222	printf("FPU disabled\n");
	223	#ifdef ERA
	224	if (era)
	225	printf("ERA ECC emulation enabled\n");
	226	#endif
	227	sregs.freq = freq;
	228
	229	INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
	230	dinfo.endian = BFD_ENDIAN_BIG;
	231
	232	termsave = fcntl(0, F_GETFL, 0);
	233	using_history();
	234	init_signals();
	235	ebase.simtime = 0;
	236	reset_all();
	237	init_bpt(&sregs);
	238	init_sim();
e26473a1 JG	239	if (lfile)
e26473a1 JG	240	last_load_addr = bfd_load(argv[lfile]);
c906108c SS	241	#ifdef STAT
	242	reset_stat(&sregs);
	243	#endif
	244
	245	if (copt) {
	246	bacmd = (char *) malloc(256);
	247	strcpy(bacmd, "batch ");
	248	strcat(bacmd, cfile);
	249	exec_cmd(&sregs, bacmd);
	250	}
	251	while (cont) {
	252
	253	if (cmdq[cmdi] != 0) {
	254	#if 0
	255	remove_history(cmdq[cmdi]);
	256	#else
	257	remove_history(cmdi);
	258	#endif
	259	free(cmdq[cmdi]);
	260	cmdq[cmdi] = 0;
	261	}
	262	cmdq[cmdi] = readline("sis> ");
	263	if (cmdq[cmdi] && *cmdq[cmdi])
	264	add_history(cmdq[cmdi]);
	265	if (cmdq[cmdi])
	266	stat = exec_cmd(&sregs, cmdq[cmdi]);
	267	else {
	268	puts("\n");
	269	exit(0);
	270	}
	271	switch (stat) {
	272	case OK:
	273	break;
	274	case CTRL_C:
	275	printf("\b\bInterrupt!\n");
	276	case TIME_OUT:
638fcdad	277	printf(" Stopped at time %" PRIu64 " (%.3f ms)\n", ebase.simtime,
c906108c SS	278	((double) ebase.simtime / (double) sregs.freq) / 1000.0);
	279	break;
	280	case BPT_HIT:
	281	printf("breakpoint at 0x%08x reached\n", sregs.pc);
	282	sregs.bphit = 1;
	283	break;
	284	case ERROR:
	285	printf("IU in error mode (%d)\n", sregs.trap);
	286	stat = 0;
638fcdad	287	printf(" %8" PRIu64 " ", ebase.simtime);
c906108c SS	288	dis_mem(sregs.pc, 1, &dinfo);
	289	break;
	290	default:
	291	break;
	292	}
	293	ctrl_c = 0;
	294	stat = OK;
	295
	296	cmdi = (cmdi + 1) & (HIST_LEN - 1);
	297
	298	}
	299	return 0;
	300	}
	301