297 lines
7.1 KiB
C
297 lines
7.1 KiB
C
/* This file is part of SIS (SPARC instruction simulator)
|
|
|
|
Copyright (C) 1995-2015 Free Software Foundation, Inc.
|
|
Contributed by 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;
|
|
|
|
sregs->starttime = get_time();
|
|
init_stdio();
|
|
if (sregs->err_mode) icount = 0;
|
|
deb = dis || sregs->histlen || sregs->bptnum;
|
|
irq = 0;
|
|
while (icount > 0) {
|
|
|
|
mexc = memory_iread (sregs->pc, &sregs->inst, &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 {
|
|
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);
|
|
#ifdef HOST_LITTLE_ENDIAN
|
|
dinfo.endian = BFD_ENDIAN_LITTLE;
|
|
#else
|
|
dinfo.endian = BFD_ENDIAN_BIG;
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|