346 lines
7.0 KiB
C
346 lines
7.0 KiB
C
/* MSPDebug - debugging tool for the eZ430
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* Copyright (C) 2009, 2010 Daniel Beer
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*
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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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* 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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*
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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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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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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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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdint.h>
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#include <regex.h>
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#include "stab.h"
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#include "expr.h"
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#include "binfile.h"
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#include "util.h"
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#include "output.h"
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#include "output_util.h"
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#include "vector.h"
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#include "sym.h"
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#include "reader.h"
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int cmd_eval(char **arg)
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{
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address_t addr;
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char name[64];
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if (expr_eval(*arg, &addr) < 0) {
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printc_err("=: can't parse: %s\n", *arg);
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return -1;
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}
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print_address(addr, name, sizeof(name));
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printc("0x%05x = %s\n", addr, name);
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return 0;
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}
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static int cmd_sym_load_add(int clear, char **arg)
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{
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FILE *in;
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if (clear && prompt_abort(MODIFY_SYMS))
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return 0;
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in = fopen(*arg, "rb");
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if (!in) {
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printc_err("sym: %s: %s\n", *arg, last_error());
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return -1;
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}
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if (clear) {
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stab_clear();
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unmark_modified(MODIFY_SYMS);
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} else {
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mark_modified(MODIFY_SYMS);
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}
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if (binfile_syms(in) < 0) {
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fclose(in);
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return -1;
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}
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fclose(in);
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return 0;
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}
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static int savemap_cb(void *user_data, const char *name, address_t value)
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{
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FILE *savemap_out = (FILE *)user_data;
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if (fprintf(savemap_out, "%04x t %s\n", value, name) < 0) {
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pr_error("sym: can't write to file");
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return -1;
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}
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return 0;
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}
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static int cmd_sym_savemap(char **arg)
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{
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FILE *savemap_out;
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char *fname = get_arg(arg);
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if (!fname) {
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printc_err("sym: filename required to save map\n");
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return -1;
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}
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savemap_out = fopen(fname, "w");
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if (!savemap_out) {
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printc_err("sym: couldn't write to %s: %s\n", fname,
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last_error());
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return -1;
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}
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if (stab_enum(savemap_cb, savemap_out) < 0) {
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fclose(savemap_out);
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return -1;
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}
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if (fclose(savemap_out) < 0) {
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printc_err("sym: error on close: %s\n", last_error());
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return -1;
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}
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unmark_modified(MODIFY_SYMS);
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return 0;
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}
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static int print_sym(void *user_data, const char *name, address_t value)
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{
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printc("0x%04x: %s\n", value, name);
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return 0;
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}
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static int find_sym(void *user_data, const char *name, address_t value)
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{
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regex_t *find_preg = (regex_t *)user_data;
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if (!regexec(find_preg, name, 0, NULL, 0))
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printc("0x%04x: %s\n", value, name);
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return 0;
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}
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static int cmd_sym_find(char **arg)
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{
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regex_t find_preg;
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char *expr = get_arg(arg);
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if (!expr) {
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stab_enum(print_sym, NULL);
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return 0;
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}
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if (regcomp(&find_preg, expr, REG_EXTENDED | REG_NOSUB)) {
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printc_err("sym: failed to compile: %s\n", expr);
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return -1;
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}
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stab_enum(find_sym, &find_preg);
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regfree(&find_preg);
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return 0;
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}
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struct rename_record {
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char old_name[64];
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int start, end;
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};
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struct rename_data {
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struct vector list;
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regex_t preg;
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};
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static int renames_do(struct rename_data *rename, const char *replace)
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{
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int i;
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int count = 0;
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for (i = 0; i < rename->list.size; i++) {
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struct rename_record *r =
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VECTOR_PTR(rename->list, i, struct rename_record);
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char new_name[128];
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int len = r->start;
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address_t value;
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if (len + 1 > sizeof(new_name))
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len = sizeof(new_name) - 1;
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memcpy(new_name, r->old_name, len);
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snprintf(new_name + len,
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sizeof(new_name) - len,
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"%s%s", replace, r->old_name + r->end);
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printc("%s -> %s\n", r->old_name, new_name);
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if (stab_get(r->old_name, &value) < 0) {
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printc_err("sym: warning: "
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"symbol missing: %s\n",
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r->old_name);
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} else {
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stab_del(r->old_name);
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if (stab_set(new_name, value) < 0) {
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printc_err("sym: warning: "
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"failed to set new name: %s\n",
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new_name);
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}
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}
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count++;
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}
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printc("%d symbols renamed\n", count);
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return 0;
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}
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static int find_renames(void *user_data, const char *name, address_t value)
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{
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struct rename_data *rename = (struct rename_data *)user_data;
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regmatch_t pmatch;
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if (!regexec(&rename->preg, name, 1, &pmatch, 0) &&
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pmatch.rm_so >= 0 && pmatch.rm_eo > pmatch.rm_so) {
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struct rename_record r;
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strncpy(r.old_name, name, sizeof(r.old_name));
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r.old_name[sizeof(r.old_name) - 1] = 0;
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r.start = pmatch.rm_so;
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r.end = pmatch.rm_eo;
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return vector_push(&rename->list, &r, 1);
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}
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return 0;
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}
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static int cmd_sym_rename(char **arg)
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{
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const char *expr = get_arg(arg);
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const char *replace = get_arg(arg);
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int ret;
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struct rename_data rename;
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if (!(expr && replace)) {
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printc_err("sym: expected pattern and replacement\n");
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return -1;
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}
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if (regcomp(&rename.preg, expr, REG_EXTENDED)) {
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printc_err("sym: failed to compile: %s\n", expr);
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return -1;
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}
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vector_init(&rename.list, sizeof(struct rename_record));
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if (stab_enum(find_renames, &rename) < 0) {
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printc_err("sym: rename failed\n");
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regfree(&rename.preg);
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vector_destroy(&rename.list);
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return -1;
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}
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regfree(&rename.preg);
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ret = renames_do(&rename, replace);
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vector_destroy(&rename.list);
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if (ret > 0)
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mark_modified(MODIFY_SYMS);
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return ret >= 0 ? 0 : -1;
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}
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static int cmd_sym_del(char **arg)
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{
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char *name = get_arg(arg);
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if (!name) {
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printc_err("sym: need a name to delete "
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"symbol table entries\n");
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return -1;
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}
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if (stab_del(name) < 0) {
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printc_err("sym: can't delete nonexistent symbol: %s\n",
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name);
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return -1;
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}
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mark_modified(MODIFY_SYMS);
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return 0;
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}
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int cmd_sym(char **arg)
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{
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char *subcmd = get_arg(arg);
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if (!subcmd) {
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printc_err("sym: need to specify a subcommand "
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"(try \"help sym\")\n");
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return -1;
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}
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if (!strcasecmp(subcmd, "clear")) {
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if (prompt_abort(MODIFY_SYMS))
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return 0;
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stab_clear();
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unmark_modified(MODIFY_SYMS);
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return 0;
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}
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if (!strcasecmp(subcmd, "set")) {
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char *name = get_arg(arg);
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char *val_text = get_arg(arg);
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address_t value;
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if (!(name && val_text)) {
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printc_err("sym: need a name and value to set "
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"symbol table entries\n");
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return -1;
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}
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if (expr_eval(val_text, &value) < 0) {
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printc_err("sym: can't parse value: %s\n",
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val_text);
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return -1;
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}
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if (stab_set(name, value) < 0)
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return -1;
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mark_modified(MODIFY_SYMS);
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return 0;
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}
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if (!strcasecmp(subcmd, "del"))
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return cmd_sym_del(arg);
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if (!strcasecmp(subcmd, "import"))
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return cmd_sym_load_add(1, arg);
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if (!strcasecmp(subcmd, "import+"))
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return cmd_sym_load_add(0, arg);
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if (!strcasecmp(subcmd, "export"))
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return cmd_sym_savemap(arg);
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if (!strcasecmp(subcmd, "rename"))
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return cmd_sym_rename(arg);
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if (!strcasecmp(subcmd, "find"))
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return cmd_sym_find(arg);
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printc_err("sym: unknown subcommand: %s\n", subcmd);
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return -1;
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}
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