diff options
Diffstat (limited to 'xpp/utils/hexfile.c')
| -rw-r--r-- | xpp/utils/hexfile.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/xpp/utils/hexfile.c b/xpp/utils/hexfile.c new file mode 100644 index 0000000..f6e4149 --- /dev/null +++ b/xpp/utils/hexfile.c @@ -0,0 +1,360 @@ +/* + * Written by Oron Peled <oron@actcom.co.il> + * Copyright (C) 2006, Xorcom + * + * All rights reserved. + * + * 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 <stdio.h> +#include <assert.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> +#include "hexfile.h" + +static const char rcsid[] = "$Id$"; + +static parse_hexfile_report_func_t report_func = NULL; + +parse_hexfile_report_func_t parse_hexfile_set_reporting(parse_hexfile_report_func_t rf) +{ + parse_hexfile_report_func_t old_rf = report_func; + report_func = rf; + return old_rf; +} + +static void chomp(char buf[]) +{ + size_t last = strlen(buf) - 1; + while(last >= 0 && (buf[last] == '\n' || buf[last] == '\r')) + buf[last--] = '\0'; +} + +int checksum(struct hexline *hexline) +{ + unsigned int i; + unsigned int chksm = 0; + int ll = hexline->d.content.header.ll; + + for(i = 0; i <= sizeof(hexline->d.content.header) + ll; i++) { + chksm += hexline->d.raw[i]; + } + return chksm & 0xFF; +} + +static int update_hexline(struct hexdata *hexdata, char *buf) +{ + int ret; + unsigned int ll, offset, tt; + char *p; + struct hexline *hexline; + unsigned int i; + int allocsize; + unsigned int last_line = hexdata->last_line; + + if(hexdata->got_eof) { + if(report_func) + report_func(LOG_ERR, "Extranous data after EOF record\n"); + return -EINVAL; + } + if(last_line >= hexdata->maxlines) { + if(report_func) + report_func(LOG_ERR, "Hexfile too large (maxline %d)\n", hexdata->maxlines); + return -ENOMEM; + } + ret = sscanf(buf, "%02X%04X%02X", &ll, &offset, &tt); + if(ret != 3) { + if(report_func) + report_func(LOG_ERR, "Bad line header (only %d items out of 3 parsed)\n", ret); + return -EINVAL; + } + switch(tt) { + case TT_DATA: + break; + case TT_EOF: + if(ll != 0) { + if(report_func) + report_func(LOG_ERR, "Bad EOF record len = %d\n", ll); + return -EINVAL; + } + if(offset != 0) { + if(report_func) + report_func(LOG_ERR, "Bad EOF record offset = %d\n", offset); + return -EINVAL; + } + hexdata->got_eof = 1; + break; + case TT_EXT_SEG: /* Unimplemented */ + case TT_START_SEG: /* Unimplemented */ + case TT_EXT_LIN: /* Unimplemented */ + case TT_START_LIN: /* Unimplemented */ + return 1; + default: + if(report_func) + report_func(LOG_ERR, "Unknown record type %d\n", tt); + return -EINVAL; + } + buf += 8; /* Skip header */ + ll++; /* include the checksum for now */ + allocsize = sizeof(struct hexline) + ll; + if((hexline = (struct hexline *)malloc(allocsize)) == NULL) { + if(report_func) + report_func(LOG_ERR, "No more memory for hexfile lines\n"); + return -EINVAL; + } + memset(hexline, 0, allocsize); + hexline->d.content.header.ll = ll; + hexline->d.content.header.offset = offset; + hexline->d.content.header.tt = tt; + hexdata->lines[last_line++] = hexline; + p = buf; + for(i = 0; i < ll; i++) { + unsigned int val; + + if((*p == '\0') || (*(p+1) == '\0')) { + if(report_func) + report_func(LOG_ERR, "Short data string '%s'\n", buf); + return -EINVAL; + } + ret = sscanf(p, "%02X", &val); + if(ret != 1) { + if(report_func) + report_func(LOG_ERR, "Bad data byte #%d\n", i); + return -EINVAL; + } + hexline->d.content.tt_data.data[i] = val; + p += 2; + } + hexline->d.content.header.ll--; /* Fix the checksum */ + if(checksum(hexline) != 0) { + if(report_func) + report_func(LOG_ERR, "Bad checksum\n"); + return -EINVAL; + } + if(hexdata->got_eof) + return 0; + hexdata->last_line++; + return 1; +} + +void free_hexdata(struct hexdata *hexdata) +{ + if(hexdata) { + unsigned int i; + + for(i = 0; i < hexdata->maxlines; i++) + if(hexdata->lines[i] != NULL) + free(hexdata->lines[i]); + free(hexdata); + } +} + +int dump_hexfile(struct hexdata *hexdata, FILE *outfile) +{ + uint8_t ll; + uint16_t offset; + uint8_t tt; + uint8_t old_chksum; + uint8_t new_chksum; + uint8_t *data; + unsigned int i; + unsigned int j; + + for(i = 0; i <= hexdata->last_line; i++) { + struct hexline *line = hexdata->lines[i]; + if(!line) { + if(report_func) + report_func(LOG_ERR, "Missing line at #%d\n", i); + return -EINVAL; + } + ll = line->d.content.header.ll; + offset = line->d.content.header.offset; + tt = line->d.content.header.tt; + fprintf(outfile, ":%02X%04X%02X", ll, offset, tt); + data = line->d.content.tt_data.data; + for(j = 0; j < ll; j++) { + fprintf(outfile, "%02X", data[j]); + } + old_chksum = data[ll]; + data[ll] = 0; + new_chksum = 0xFF - checksum(line) + 1; + data[ll] = old_chksum; + assert(new_chksum == old_chksum); + fprintf(outfile, "%02X\n", new_chksum); + } + return 0; +} + +int dump_hexfile2(struct hexdata *hexdata, FILE *outfile, uint8_t maxwidth) +{ + uint8_t ll; + uint8_t tt; + uint8_t new_chksum; + uint8_t *data; + unsigned int i; + unsigned int j; + + if (maxwidth <= sizeof(hexdata->lines[0]->d.content.header) ){ + if(report_func) + report_func(LOG_ERR, "Line width too small %d\n", maxwidth); + return -EINVAL; + } + + for(i = 0; i <= hexdata->last_line; i++) { + struct hexline *line = hexdata->lines[i]; + struct hexline *extraline; + int allocsize; + int bytesleft = 0; + int extra_offset = 0; + unsigned int this_line = 0; + + if(!line) { + if(report_func) + report_func(LOG_ERR, "Missing line at #%d\n", i); + return -EINVAL; + } + ll = line->d.content.header.ll; + bytesleft = ll; + /* split the line into several lines */ + tt = line->d.content.header.tt; + while (bytesleft > 0) { + this_line = (bytesleft >= maxwidth) ? maxwidth : bytesleft; + allocsize = sizeof(struct hexline) + this_line + 1; + /* generate the new line */ + if((extraline = (struct hexline *)malloc(allocsize)) == NULL) { + if(report_func) + report_func(LOG_ERR, "No more memory for hexfile lines\n"); + return -EINVAL; + } + memset( extraline, 0, allocsize ); + extraline->d.content.header.ll = this_line; + extraline->d.content.header.offset = line->d.content.header.offset + extra_offset; + extraline->d.content.header.tt = tt; + memcpy( extraline->d.content.tt_data.data, line->d.content.tt_data.data+extra_offset, this_line); + new_chksum = 0xFF - checksum(extraline) + 1; + /* print it */ + data = extraline->d.content.tt_data.data; + fprintf(outfile, ":%02X%04X%02X", extraline->d.content.header.ll, extraline->d.content.header.offset, tt); + for(j = 0; j < this_line; j++) { + fprintf(outfile, "%02X", data[j]); + } + fprintf(outfile, "%02X\n", new_chksum); + /* cleanups */ + free( extraline); + extra_offset += this_line; + bytesleft -= this_line; + } + } + return 0; +} + +struct hexdata *parse_hexfile(const char *fname, unsigned int maxlines) +{ + FILE *fp; + struct hexdata *hexdata = NULL; + int datasize; + char buf[BUFSIZ]; + int line; + int ret; + + assert(fname != NULL); + if(report_func) + report_func(LOG_INFO, "Parsing %s\n", fname); + datasize = sizeof(struct hexdata) + maxlines * sizeof(char *); + hexdata = (struct hexdata *)malloc(datasize); + if(!hexdata) { + if(report_func) + report_func(LOG_ERR, "Failed to allocate %d bytes for hexfile contents\n", datasize); + goto err; + } + memset(hexdata, 0, datasize); + hexdata->maxlines = maxlines; + if((fp = fopen(fname, "r")) == NULL) { + if(report_func) + report_func(LOG_ERR, "Failed to open hexfile '%s'\n", fname); + goto err; + } + line = 0; + while(fgets(buf, BUFSIZ, fp)) { + line++; + if(buf[0] == '\0') { + if(report_func) + report_func(LOG_ERR, "Short line at %s:%d\n", fname, line); + goto err; + } + chomp(buf); + if(buf[0] == '#') { + if(report_func) + report_func(LOG_INFO, "Comment '%s'\n", buf + 1); + continue; + } + if(buf[0] != ':') { + if(report_func) + report_func(LOG_ERR, "Line begins with 0x%X at %s:%d\n", buf[0], fname, line); + goto err; + } + if((ret = update_hexline(hexdata, buf + 1)) < 0) { + if(report_func) + report_func(LOG_ERR, "Failed parsing %s at line: %d\n", fname, line); + goto err; + } + } + fclose(fp); + if(report_func) + report_func(LOG_INFO, "%s parsed OK\n", fname); + return hexdata; +err: + free_hexdata(hexdata); + return NULL; +} + +void dump_binary(struct hexdata *hexdata, const char *outfile) +{ + FILE *fp; + unsigned int i; + size_t len; + + if(report_func) + report_func(LOG_INFO, "Dumping binary data into '%s'\n", outfile); + if((fp = fopen(outfile, "w")) == NULL) { + perror(outfile); + exit(1); + } + for(i = 0; i < hexdata->maxlines; i++) { + struct hexline *hexline = hexdata->lines[i]; + + if(!hexline) + break; + if(hexline->d.content.header.tt == TT_EOF) { + if(report_func) + report_func(LOG_INFO, "\ndump: good EOF record"); + continue; + } + if(report_func) + report_func(LOG_INFO, "dump: %6d\r", i); + len = hexline->d.content.header.ll; + if(fwrite(hexline->d.content.tt_data.data, 1, len, fp) != len) { + perror("write"); + exit(1); + } + } + if(report_func) + report_func(LOG_INFO, "\nDump finished\n"); + fclose(fp); +} + |