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[/] [openrisc/] [tags/] [gnu-src/] [gdb-7.2/] [gdb-7.2-or32-1.0rc3/] [sim/] [erc32/] [sis.c] - Rev 593
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/* * 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 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 "config.h" #include <signal.h> #include <string.h> #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #include <stdio.h> #include <time.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 */ typedef struct { char *line; char *data; } HIST_ENTRY; extern char * readline PARAMS ((char *prompt)); extern void using_history PARAMS ((void)); extern void add_history PARAMS ((char *string)); extern HIST_ENTRY *remove_history PARAMS ((int which)); /* 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 = time(NULL); 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 += time(NULL) - 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; 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 { last_load_addr = bfd_load(argv[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(); #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; }
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