158 lines
3.0 KiB
C
158 lines
3.0 KiB
C
/* MSPDebug - debugging tool for MSP430 MCUs
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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 <ctype.h>
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#include <stdlib.h>
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#include "titext.h"
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#include "util.h"
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#include "output.h"
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static int is_address_line(const char *text)
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{
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if (*text != '@')
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return 0;
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text++;
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if (!*text || isspace(*text))
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return 0;
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while (*text && !isspace(*text)) {
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if (!ishex(*text))
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return 0;
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text++;
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}
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while (*text) {
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if (!isspace(*text))
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return 0;
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text++;
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}
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return 1;
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}
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static int is_data_line(const char *text)
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{
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while (*text) {
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if (!(ishex(*text) || isspace(*text)))
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return 0;
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text++;
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}
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return 1;
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}
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int titext_check(FILE *in)
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{
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char buf[64];
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rewind(in);
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if (!fgets(buf, sizeof(buf), in))
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return 0;
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return is_address_line(buf);
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}
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static int process_data_line(address_t address, const char *buf,
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binfile_imgcb_t cb, void *user_data)
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{
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uint8_t data[64];
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int data_len = 0;
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int value = 0;
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int vc = 0;
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while (*buf) {
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int c = *(buf++);
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int x;
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if (isspace(c)) {
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if (vc) {
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if (data_len >= sizeof(data))
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goto too_long;
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data[data_len++] = value;
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}
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vc = 0;
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} else {
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if (isdigit(c)) {
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x = c - '0';
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} else if (c >= 'A' && c <= 'F') {
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x = c - 'A' + 10;
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} else if (c >= 'a' && c <= 'f') {
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x = c - 'a' + 10;
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} else {
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printc_err("titext: unexpected "
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"character: %c\n", c);
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return -1;
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}
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if (vc >= 2) {
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printc_err("titext: too many digits "
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"in hex value\n");
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return -1;
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}
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value = (value << 4) | x;
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vc++;
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}
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}
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if (vc) {
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if (data_len >= sizeof(data))
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goto too_long;
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data[data_len++] = value;
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}
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if (cb(user_data, address, data, data_len) < 0)
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return -1;
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return data_len;
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too_long:
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printc_err("titext: too many data bytes\n");
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return -1;
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}
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int titext_extract(FILE *in, binfile_imgcb_t cb, void *user_data)
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{
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address_t address = 0;
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int lno = 0;
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char buf[128];
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rewind(in);
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while (fgets(buf, sizeof(buf), in)) {
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lno++;
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if (is_address_line(buf)) {
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address = strtoul(buf + 1, NULL, 16);
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} else if (is_data_line(buf)) {
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int count = process_data_line(address, buf,
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cb, user_data);
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if (count < 0) {
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printc_err("titext: data error on line "
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"%d\n", lno);
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return -1;
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}
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address += count;
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}
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}
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return 0;
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}
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