/* parce.c -- Architecture independent load and parsing of assembly
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/* parce.c -- Architecture independent load and parsing of assembly
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <ctype.h>
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#include <string.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include "parse.h"
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#include "parse.h"
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#include "abstract.h"
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#include "abstract.h"
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#include "arch.h"
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#include "arch.h"
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#define MAXLINE_LEN 18000
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#define MAXLINE_LEN 18000
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/* Unused mem memory marker. It is used when allocating program and data memory
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/* Unused mem memory marker. It is used when allocating program and data memory
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during parsing */
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during parsing */
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unsigned int freemem;
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unsigned int freemem;
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int nonempty(char *line)
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int nonempty(char *line)
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{
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{
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int i;
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int i;
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for(i = 0; i < strlen(line); i++)
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for(i = 0; i < strlen(line); i++)
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if (!isspace(line[i]))
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if (!isspace(line[i]))
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return(1);
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return(1);
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return(0);
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return(0);
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}
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}
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int nondigit(char *line)
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int nondigit(char *line)
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{
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{
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int i;
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int i;
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for(i = 0; i < strlen(line); i++)
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for(i = 0; i < strlen(line); i++)
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if (!isdigit(line[i]))
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if (!isdigit(line[i]))
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return(1);
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return(1);
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return(0);
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return(0);
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}
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}
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char *strtoken(char *in, char *out, int which)
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char *strtoken(char *in, char *out, int which)
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{
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{
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char *super;
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char *super;
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char *sub;
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char *sub;
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char *newline;
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char *newline;
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super = strdup(in);
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super = strdup(in);
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sub = strtok(super, " \t");
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sub = strtok(super, " \t");
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while (sub && --which)
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while (sub && --which)
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sub = strtok(NULL, " \t");
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sub = strtok(NULL, " \t");
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if (sub && !which) {
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if (sub && !which) {
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if ((newline = strchr(sub, '\n')))
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if ((newline = strchr(sub, '\n')))
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newline[0] = '\0';
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newline[0] = '\0';
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strcpy(out, sub);
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strcpy(out, sub);
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} else
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} else
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out[0] = '\0';
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out[0] = '\0';
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free(super);
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free(super);
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if ((newline = strchr(out, '\r'))) /* get rid of CR */
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if ((newline = strchr(out, '\r'))) /* get rid of CR */
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newline[0] = '\0';
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newline[0] = '\0';
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return(out);
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return(out);
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}
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}
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void adddatastr(char *str)
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void adddatastr(char *str)
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{
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{
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if (str)
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if (str)
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str++;
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str++;
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else
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else
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return;
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return;
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for(; *str && *str != '\"'; str++, freemem++)
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for(; *str && *str != '\"'; str++, freemem++)
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if (*str == '\\')
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if (*str == '\\')
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switch (*++str) {
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switch (*++str) {
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case 'n': mem[freemem].data = '\n';
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case 'n': mem[freemem].data = '\n';
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break;
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break;
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case 't': mem[freemem].data = '\t';
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case 't': mem[freemem].data = '\t';
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break;
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break;
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case 'r': mem[freemem].data = '\r';
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case 'r': mem[freemem].data = '\r';
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break;
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break;
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case '0': mem[freemem].data = '\0';
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case '0': mem[freemem].data = '\0';
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break;
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break;
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default: break;
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default: break;
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}
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}
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else
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else
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mem[freemem].data = *str;
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mem[freemem].data = *str;
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}
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}
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void adddataword(char *num)
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void adddataword(char *item)
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{
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{
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mem[freemem].data = (char) (atol(num) >> 24);
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unsigned long num;
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mem[freemem + 1].data = (char) (atol(num) >> 16);
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mem[freemem + 2].data = (char) (atol(num) >> 8);
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if (isdigit(*item))
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mem[freemem + 3].data = (char) (atol(num));
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num = atol(item);
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else
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num = eval_label(item);
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debug("adddataword: [0x%x] <= %x\n", freemem, num);
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mem[freemem].data = (char) (num >> 24);
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mem[freemem + 1].data = (char) (num >> 16);
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mem[freemem + 2].data = (char) (num >> 8);
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mem[freemem + 3].data = (char) (num);
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freemem += 4;
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freemem += 4;
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}
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}
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void adddatahalf(char *num)
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void adddatahalf(char *item)
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{
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{
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mem[freemem].data = (char) (atol(num) >> 8);
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unsigned long num;
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mem[freemem + 1].data = (char) (atol(num));
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if (isdigit(*item))
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num = atol(item);
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else
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num = eval_label(item);
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mem[freemem].data = (char) (num >> 8);
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mem[freemem + 1].data = (char) (num);
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freemem += 2;
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freemem += 2;
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}
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}
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void adddatabyte(char *num)
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void adddatabyte(char *item)
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{
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{
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mem[freemem].data = (char) (atol(num));
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unsigned long num;
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if (isdigit(*item))
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num = atol(item);
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else
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num = eval_label(item);
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mem[freemem].data = (char) (num);
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freemem++;
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freemem++;
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}
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}
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void adddataspace(char *num)
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void adddataspace(char *num)
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{
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{
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freemem += atol(num);
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freemem += atol(num);
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}
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}
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void addlabel(char *label)
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void addlabel(char *label)
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{
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{
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if (strstr(label, LABELEND_CHAR)) {
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if (strstr(label, LABELEND_CHAR)) {
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*strstr(label, LABELEND_CHAR) = '\0';
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*strstr(label, LABELEND_CHAR) = '\0';
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strcpy(mem[freemem].label, label);
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strcpy(mem[freemem].label, label);
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}
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}
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return;
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return;
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}
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}
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void addprogram(char *insn, char *operands)
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void addprogram(char *insn, char *operands)
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{
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{
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#ifdef __HALF_WORD_INSN__
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#ifdef __HALF_WORD_INSN__
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int h_insn_is_word_flag=0;
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int h_insn_is_word_flag=0;
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char insn_first2_char[3];
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char insn_first2_char[3];
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strcpy(mem[freemem].insn, insn);
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strcpy(mem[freemem].insn, insn);
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insn_first2_char[0]=insn[0];
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insn_first2_char[0]=insn[0];
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insn_first2_char[1]=insn[1];
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insn_first2_char[1]=insn[1];
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insn_first2_char[2]='\0';
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insn_first2_char[2]='\0';
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if(strcmp("h.", insn_first2_char) == 0) {
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if(strcmp("h.", insn_first2_char) == 0) {
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if(strcmp("h.load32u", insn) == 0 ||
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if(strcmp("h.load32u", insn) == 0 ||
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strcmp("h.load16u", insn) == 0 ||
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strcmp("h.load16u", insn) == 0 ||
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strcmp("h.load8u", insn) == 0 ||
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strcmp("h.load8u", insn) == 0 ||
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strcmp("h.stor32", insn) == 0 ||
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strcmp("h.stor32", insn) == 0 ||
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strcmp("h.stor16", insn) == 0 ||
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strcmp("h.stor16", insn) == 0 ||
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strcmp("h.stor8", insn) == 0 ||
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strcmp("h.stor8", insn) == 0 ||
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strcmp("h.jal", insn) == 0 ||
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strcmp("h.jal", insn) == 0 ||
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/* strcmp("h.mtsr", insn) == 0 ||
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/* strcmp("h.mtsr", insn) == 0 ||
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strcmp("h.mfsr", insn) == 0 || */
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strcmp("h.mfsr", insn) == 0 || */
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strcmp("h.movi16ze", insn) == 0 ||
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strcmp("h.movi16ze", insn) == 0 ||
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strcmp("h.immhi16u", insn) == 0 ||
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strcmp("h.immhi16u", insn) == 0 ||
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strcmp("h.addi16s", insn) == 0 ||
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strcmp("h.addi16s", insn) == 0 ||
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strcmp("h.subi16s", insn) == 0 ||
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strcmp("h.subi16s", insn) == 0 ||
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strcmp("h.xori16", insn) == 0 ||
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strcmp("h.xori16", insn) == 0 ||
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strcmp("h.ori16", insn) == 0 ||
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strcmp("h.ori16", insn) == 0 ||
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strcmp("h.andi16", insn) == 0
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strcmp("h.andi16", insn) == 0
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)
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)
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h_insn_is_word_flag = 2; /* h.xxx insn AND occupy 4 bytes */
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h_insn_is_word_flag = 2; /* h.xxx insn AND occupy 4 bytes */
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else
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else
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h_insn_is_word_flag = 1; /* h.xxx insn AND occupy 2 bytes */
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h_insn_is_word_flag = 1; /* h.xxx insn AND occupy 2 bytes */
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}
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}
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else {
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else {
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h_insn_is_word_flag = 0; /* not h.xxx insn */
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h_insn_is_word_flag = 0; /* not h.xxx insn */
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}
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}
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#else
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#else
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strcpy(mem[freemem].insn, insn);
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strcpy(mem[freemem].insn, insn);
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#endif
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#endif
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/* op1 */
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/* op1 */
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if (*operands)
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if (*operands)
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strcpy(mem[freemem].op1, operands);
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strcpy(mem[freemem].op1, operands);
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if (strstr(mem[freemem].op1, OPERAND_DELIM)) {
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if (strstr(mem[freemem].op1, OPERAND_DELIM)) {
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operands = strstr(mem[freemem].op1, OPERAND_DELIM);
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operands = strstr(mem[freemem].op1, OPERAND_DELIM);
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*operands = '\0';
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*operands = '\0';
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operands++;
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operands++;
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} else {
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} else {
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#ifdef __HALF_WORD_INSN__
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#ifdef __HALF_WORD_INSN__
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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#else
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#else
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freemem += 4;
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freemem += 4;
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#endif
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#endif
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return;
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return;
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}
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}
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/* op2 */
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/* op2 */
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if (*operands)
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if (*operands)
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strcpy(mem[freemem].op2, operands);
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strcpy(mem[freemem].op2, operands);
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if (strstr(mem[freemem].op2, OPERAND_DELIM)) {
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if (strstr(mem[freemem].op2, OPERAND_DELIM)) {
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operands = strstr(mem[freemem].op2, OPERAND_DELIM);
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operands = strstr(mem[freemem].op2, OPERAND_DELIM);
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*operands = '\0';
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*operands = '\0';
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operands++;
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operands++;
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} else {
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} else {
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#ifdef __HALF_WORD_INSN__
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#ifdef __HALF_WORD_INSN__
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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#else
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#else
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freemem += 4;
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freemem += 4;
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#endif
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#endif
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return;
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return;
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}
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}
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|
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/* op3 */
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/* op3 */
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if (*operands)
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if (*operands)
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strcpy(mem[freemem].op3, operands);
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strcpy(mem[freemem].op3, operands);
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if (strstr(mem[freemem].op3, OPERAND_DELIM)) {
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if (strstr(mem[freemem].op3, OPERAND_DELIM)) {
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operands = strstr(mem[freemem].op3, OPERAND_DELIM);
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operands = strstr(mem[freemem].op3, OPERAND_DELIM);
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*operands = '\0';
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*operands = '\0';
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operands++;
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operands++;
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} else {
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} else {
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#ifdef __HALF_WORD_INSN__
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#ifdef __HALF_WORD_INSN__
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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#else
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#else
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freemem += 4;
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freemem += 4;
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#endif
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#endif
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return;
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return;
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}
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}
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|
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/* op4 */
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/* op4 */
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if (*operands)
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if (*operands)
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strcpy(mem[freemem].op4, operands);
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strcpy(mem[freemem].op4, operands);
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if (strstr(mem[freemem].op4, OPERAND_DELIM)) {
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if (strstr(mem[freemem].op4, OPERAND_DELIM)) {
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operands = strstr(mem[freemem].op4, OPERAND_DELIM);
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operands = strstr(mem[freemem].op4, OPERAND_DELIM);
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*operands = '\0';
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*operands = '\0';
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operands++;
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operands++;
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}
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}
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|
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#ifdef __HALF_WORD_INSN__
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#ifdef __HALF_WORD_INSN__
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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freemem += (h_insn_is_word_flag == 1) ? 2 : 4;
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#else
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#else
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freemem += 4;
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freemem += 4;
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#endif
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#endif
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return;
|
return;
|
}
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}
|
|
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/* Non-architecture dependent parsing: stripping comments, filling
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/* Non-architecture dependent parsing: stripping comments, filling
|
abstract memory */
|
abstract memory */
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|
|
void parseline(char *inputline)
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void parseline(char *inputline)
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{
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{
|
char item[MAXLINE_LEN];
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char item[MAXLINE_LEN];
|
char item2[MAXLINE_LEN];
|
char item2[MAXLINE_LEN];
|
int i = 0;
|
int i = 0;
|
|
|
/* Strip comments: simply terminate line where
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/* Strip comments: simply terminate line where
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the first comment character appears. */
|
the first comment character appears. */
|
|
|
debug("PARSING: %s", inputline);
|
debug("PARSING: %s", inputline);
|
while (inputline[i] != '\0')
|
while (inputline[i] != '\0')
|
if (inputline[i] == COMMENT_CHAR) {
|
if (inputline[i] == COMMENT_CHAR) {
|
inputline[i] = '\0';
|
inputline[i] = '\0';
|
break;
|
break;
|
} else
|
} else
|
i++;
|
i++;
|
|
|
/* Get the first item from this line */
|
/* Get the first item from this line */
|
strtoken(inputline, item, 1); /* opcode */
|
strtoken(inputline, item, 1); /* opcode */
|
strtoken(inputline, item2, 2); /* all the remaining one/two/three operands */
|
strtoken(inputline, item2, 2); /* all the remaining one/two/three operands */
|
|
|
/* Is this item empty? Nothing to process, so return. */
|
/* Is this item empty? Nothing to process, so return. */
|
if (strlen(item) == 0)
|
if (strlen(item) == 0)
|
return;
|
return;
|
|
|
/* Is this item a label? If yes, add it to the label table and return immediately. */
|
/* Is this item a label? If yes, add it to the label table and return immediately. */
|
if (strstr(item, LABELEND_CHAR)) {
|
if (strstr(item, LABELEND_CHAR)) {
|
addlabel(item);
|
addlabel(item);
|
return;
|
return;
|
}
|
}
|
|
|
/* Is this item a .directive? If yes, check for some supported
|
/* Is this item a .directive? If yes, check for some supported
|
and then return (even if unsupported found). */
|
and then return (even if unsupported found). */
|
if (item[0] == DIRECTIVE_CHAR) {
|
if (item[0] == DIRECTIVE_CHAR) {
|
if ((strcmp(item, ".align") == 0) && (freemem % 4)) {
|
if ((strcmp(item, ".align") == 0) && (freemem % 4)) {
|
freemem &= -4; /* e.g. 0xfffffffc */
|
freemem &= -4; /* e.g. 0xfffffffc */
|
freemem += 4; /* always align to word */
|
freemem += 4; /* always align to word */
|
return;
|
return;
|
} else
|
} else
|
if (strcmp(item, ".ascii") == 0) {
|
if (strcmp(item, ".ascii") == 0) {
|
adddatastr(strstr(inputline, "\""));
|
adddatastr(strstr(inputline, "\""));
|
return;
|
return;
|
} else
|
} else
|
if (strcmp(item, ".word") == 0) {
|
if (strcmp(item, ".word") == 0) {
|
adddataword(item2);
|
adddataword(item2);
|
return;
|
return;
|
} else
|
} else
|
if (strcmp(item, ".half") == 0) {
|
if (strcmp(item, ".half") == 0) {
|
adddatahalf(item2);
|
adddatahalf(item2);
|
return;
|
return;
|
} else
|
} else
|
if (strcmp(item, ".byte") == 0) {
|
if (strcmp(item, ".byte") == 0) {
|
adddatabyte(item2);
|
adddatabyte(item2);
|
return;
|
return;
|
} else
|
} else
|
if (strcmp(item, ".space") == 0) {
|
if (strcmp(item, ".space") == 0) {
|
adddataspace(item2);
|
adddataspace(item2);
|
return;
|
return;
|
} else /* .directive but not one of the supported */
|
} else /* .directive but not one of the supported */
|
return;
|
return;
|
}
|
}
|
|
|
/* This item can only be an instruction. Get all operands
|
/* This item can only be an instruction. Get all operands
|
and add everything to mem array but as a program. */
|
and add everything to mem array but as a program. */
|
addprogram(item, item2);
|
addprogram(item, item2);
|
|
|
/* Also do static, single stats. */
|
/* Also do static, single stats. */
|
addsstats(item, 0, 1);
|
addsstats(item, 0, 1);
|
|
|
return;
|
return;
|
|
|
}
|
}
|
|
|
/* Load file and hand over every line to parse routine. */
|
/* Load file and hand over every line to parse routine. */
|
|
|
void readfile(char *filename)
|
void readfile(char *filename)
|
{
|
{
|
FILE *inputfs;
|
FILE *inputfs;
|
char inputbuf[MAXLINE_LEN];
|
char inputbuf[MAXLINE_LEN];
|
char *status;
|
char *status;
|
|
|
if ((inputfs = fopen(filename, "r"))) {
|
if ((inputfs = fopen(filename, "r"))) {
|
while ((status = fgets(inputbuf, sizeof(inputbuf), inputfs))) {
|
while ((status = fgets(inputbuf, sizeof(inputbuf), inputfs))) {
|
if (nonempty(inputbuf))
|
if (nonempty(inputbuf))
|
parseline(inputbuf);
|
parseline(inputbuf);
|
}
|
}
|
fclose(inputfs);
|
fclose(inputfs);
|
}
|
}
|
else
|
else
|
perror("readfile");
|
perror("readfile");
|
|
|
return;
|
return;
|
}
|
}
|
|
|
|
|
void loadcode(char *filename)
|
void loadcode(char *filename)
|
{
|
{
|
freemem = 0;
|
freemem = 0;
|
memset(mem, 0, sizeof(mem));
|
memset(mem, 0, sizeof(mem));
|
readfile(filename);
|
readfile(filename);
|
return;
|
return;
|
}
|
}
|
|
|
