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fileio.c
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fileio.c
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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2000-2004 Brian S. Dean <[email protected]>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* $Id$ */
#include "ac_cfg.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "avrdude.h"
#include "avr.h"
#include "fileio.h"
#define IHEX_MAXDATA 256
#define MAX_LINE_LEN 256 /* max line length for ASCII format input files */
struct ihexrec {
unsigned char reclen;
unsigned int loadofs;
unsigned char rectyp;
unsigned char data[IHEX_MAXDATA];
unsigned char cksum;
};
static int b2ihex(unsigned char * inbuf, int bufsize,
int recsize, int startaddr,
char * outfile, FILE * outf);
static int ihex2b(char * infile, FILE * inf,
unsigned char * outbuf, int bufsize);
static int b2srec(unsigned char * inbuf, int bufsize,
int recsize, int startaddr,
char * outfile, FILE * outf);
static int srec2b(char * infile, FILE * inf,
unsigned char * outbuf, int bufsize);
static int ihex_readrec(struct ihexrec * ihex, char * rec);
static int srec_readrec(struct ihexrec * srec, char * rec);
static int fileio_rbin(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size);
static int fileio_ihex(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size);
static int fileio_srec(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size);
static int fileio_num(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size,
FILEFMT fmt);
static int fmt_autodetect(char * fname);
char * fmtstr(FILEFMT format)
{
switch (format) {
case FMT_AUTO : return "auto-detect"; break;
case FMT_SREC : return "Motorola S-Record"; break;
case FMT_IHEX : return "Intel Hex"; break;
case FMT_RBIN : return "raw binary"; break;
default : return "invalid format"; break;
};
}
static int b2ihex(unsigned char * inbuf, int bufsize,
int recsize, int startaddr,
char * outfile, FILE * outf)
{
unsigned char * buf;
unsigned int nextaddr;
int n, nbytes, n_64k;
int i;
unsigned char cksum;
if (recsize > 255) {
fprintf(stderr, "%s: recsize=%d, must be < 256\n",
progname, recsize);
return -1;
}
n_64k = 0;
nextaddr = startaddr;
buf = inbuf;
nbytes = 0;
while (bufsize) {
n = recsize;
if (n > bufsize)
n = bufsize;
if ((nextaddr + n) > 0x10000)
n = 0x10000 - nextaddr;
if (n) {
cksum = 0;
fprintf(outf, ":%02X%04X00", n, nextaddr);
cksum += n + ((nextaddr >> 8) & 0x0ff) + (nextaddr & 0x0ff);
for (i=0; i<n; i++) {
fprintf(outf, "%02X", buf[i]);
cksum += buf[i];
}
cksum = -cksum;
fprintf(outf, "%02X\n", cksum);
nextaddr += n;
nbytes += n;
}
if (nextaddr >= 0x10000) {
int lo, hi;
/* output an extended address record */
n_64k++;
lo = n_64k & 0xff;
hi = (n_64k >> 8) & 0xff;
cksum = 0;
fprintf(outf, ":02000004%02X%02X", hi, lo);
cksum += 2 + 0 + 4 + hi + lo;
cksum = -cksum;
fprintf(outf, "%02X\n", cksum);
nextaddr = 0;
}
/* advance to next 'recsize' bytes */
buf += n;
bufsize -= n;
}
/*-----------------------------------------------------------------
add the end of record data line
-----------------------------------------------------------------*/
cksum = 0;
n = 0;
nextaddr = 0;
fprintf(outf, ":%02X%04X01", n, nextaddr);
cksum += n + ((nextaddr >> 8) & 0x0ff) + (nextaddr & 0x0ff) + 1;
cksum = -cksum;
fprintf(outf, "%02X\n", cksum);
return nbytes;
}
static int ihex_readrec(struct ihexrec * ihex, char * rec)
{
int i, j;
char buf[8];
int offset, len;
char * e;
unsigned char cksum;
int rc;
len = strlen(rec);
offset = 1;
cksum = 0;
/* reclen */
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
ihex->reclen = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
/* load offset */
if (offset + 4 > len)
return -1;
for (i=0; i<4; i++)
buf[i] = rec[offset++];
buf[i] = 0;
ihex->loadofs = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
/* record type */
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
ihex->rectyp = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
cksum = ihex->reclen + ((ihex->loadofs >> 8) & 0x0ff) +
(ihex->loadofs & 0x0ff) + ihex->rectyp;
/* data */
for (j=0; j<ihex->reclen; j++) {
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
ihex->data[j] = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
cksum += ihex->data[j];
}
/* cksum */
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
ihex->cksum = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
rc = -cksum & 0x000000ff;
return rc;
}
/*
* Intel Hex to binary buffer
*
* Given an open file 'inf' which contains Intel Hex formated data,
* parse the file and lay it out within the memory buffer pointed to
* by outbuf. The size of outbuf, 'bufsize' is honored; if data would
* fall outsize of the memory buffer outbuf, an error is generated.
*
* Return the maximum memory address within 'outbuf' that was written.
* If an error occurs, return -1.
*
* */
static int ihex2b(char * infile, FILE * inf,
unsigned char * outbuf, int bufsize)
{
char buffer [ MAX_LINE_LEN ];
unsigned char * buf;
unsigned int nextaddr, baseaddr, maxaddr, offsetaddr;
int i;
int lineno;
int len;
struct ihexrec ihex;
int rc;
lineno = 0;
buf = outbuf;
baseaddr = 0;
maxaddr = 0;
offsetaddr = 0;
nextaddr = 0;
while (fgets((char *)buffer,MAX_LINE_LEN,inf)!=NULL) {
lineno++;
len = strlen(buffer);
if (buffer[len-1] == '\n')
buffer[--len] = 0;
if (buffer[0] != ':')
continue;
rc = ihex_readrec(&ihex, buffer);
if (rc < 0) {
fprintf(stderr, "%s: invalid record at line %d of \"%s\"\n",
progname, lineno, infile);
return -1;
}
else if (rc != ihex.cksum) {
fprintf(stderr, "%s: ERROR: checksum mismatch at line %d of \"%s\"\n",
progname, lineno, infile);
fprintf(stderr, "%s: checksum=0x%02x, computed checksum=0x%02x\n",
progname, ihex.cksum, rc);
return -1;
}
switch (ihex.rectyp) {
case 0: /* data record */
nextaddr = ihex.loadofs + baseaddr;
if ((nextaddr + ihex.reclen) > (bufsize+offsetaddr)) {
fprintf(stderr,
"%s: ERROR: address 0x%04x out of range at line %d of %s\n",
progname, nextaddr+ihex.reclen, lineno, infile);
return -1;
}
for (i=0; i<ihex.reclen; i++) {
buf[nextaddr+i-offsetaddr] = ihex.data[i];
}
if (nextaddr+ihex.reclen > maxaddr)
maxaddr = nextaddr+ihex.reclen;
break;
case 1: /* end of file record */
return maxaddr-offsetaddr;
break;
case 2: /* extended segment address record */
baseaddr = (ihex.data[0] << 8 | ihex.data[1]) << 4;
break;
case 3: /* start segment address record */
/* we don't do anything with the start address */
break;
case 4: /* extended linear address record */
baseaddr = (ihex.data[0] << 8 | ihex.data[1]) << 16;
if(nextaddr == 0) offsetaddr = baseaddr; // if provided before any data, then remember it
break;
case 5: /* start linear address record */
/* we don't do anything with the start address */
break;
default:
fprintf(stderr,
"%s: don't know how to deal with rectype=%d "
"at line %d of %s\n",
progname, ihex.rectyp, lineno, infile);
return -1;
break;
}
} /* while */
fprintf(stderr,
"%s: WARNING: no end of file record found for Intel Hex "
"file \"%s\"\n",
progname, infile);
return maxaddr-offsetaddr;
}
static int b2srec(unsigned char * inbuf, int bufsize,
int recsize, int startaddr,
char * outfile, FILE * outf)
{
unsigned char * buf;
unsigned int nextaddr;
int n, nbytes, addr_width;
int i;
unsigned char cksum;
char * tmpl=0;
if (recsize > 255) {
fprintf(stderr, "%s: ERROR: recsize=%d, must be < 256\n",
progname, recsize);
return -1;
}
nextaddr = startaddr;
buf = inbuf;
nbytes = 0;
addr_width = 0;
while (bufsize) {
n = recsize;
if (n > bufsize)
n = bufsize;
if (n) {
cksum = 0;
if (nextaddr + n <= 0xffff) {
addr_width = 2;
tmpl="S1%02X%04X";
}
else if (nextaddr + n <= 0xffffff) {
addr_width = 3;
tmpl="S2%02X%06X";
}
else if (nextaddr + n <= 0xffffffff) {
addr_width = 4;
tmpl="S3%02X%08X";
}
else {
fprintf(stderr, "%s: ERROR: address=%d, out of range\n",
progname, nextaddr);
return -1;
}
fprintf(outf, tmpl, n + addr_width + 1, nextaddr);
cksum += n + addr_width + 1;
for (i=addr_width; i>0; i--)
cksum += (nextaddr >> (i-1) * 8) & 0xff;
for (i=nextaddr; i<nextaddr + n; i++) {
fprintf(outf, "%02X", buf[i]);
cksum += buf[i];
}
cksum = 0xff - cksum;
fprintf(outf, "%02X\n", cksum);
nextaddr += n;
nbytes +=n;
}
/* advance to next 'recsize' bytes */
bufsize -= n;
}
/*-----------------------------------------------------------------
add the end of record data line
-----------------------------------------------------------------*/
cksum = 0;
n = 0;
nextaddr = 0;
if (startaddr <= 0xffff) {
addr_width = 2;
tmpl="S9%02X%04X";
}
else if (startaddr <= 0xffffff) {
addr_width = 3;
tmpl="S9%02X%06X";
}
else if (startaddr <= 0xffffffff) {
addr_width = 4;
tmpl="S9%02X%08X";
}
fprintf(outf, tmpl, n + addr_width + 1, nextaddr);
cksum += n + addr_width +1;
for (i=addr_width; i>0; i--)
cksum += (nextaddr >> (i - 1) * 8) & 0xff;
cksum = 0xff - cksum;
fprintf(outf, "%02X\n", cksum);
return nbytes;
}
static int srec_readrec(struct ihexrec * srec, char * rec)
{
int i, j;
char buf[8];
int offset, len, addr_width;
char * e;
unsigned char cksum;
int rc;
len = strlen(rec);
offset = 1;
cksum = 0;
addr_width = 2;
/* record type */
if (offset + 1 > len)
return -1;
srec->rectyp = rec[offset++];
if (srec->rectyp == 0x32 || srec->rectyp == 0x38)
addr_width = 3; /* S2,S8-record */
else if (srec->rectyp == 0x33 || srec->rectyp == 0x37)
addr_width = 4; /* S3,S7-record */
/* reclen */
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
srec->reclen = strtoul(buf, &e, 16);
cksum += srec->reclen;
srec->reclen -= (addr_width+1);
if (e == buf || *e != 0)
return -1;
/* load offset */
if (offset + addr_width > len)
return -1;
for (i=0; i<addr_width*2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
srec->loadofs = strtoull(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
for (i=addr_width; i>0; i--)
cksum += (srec->loadofs >> (i - 1) * 8) & 0xff;
/* data */
for (j=0; j<srec->reclen; j++) {
if (offset+2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
srec->data[j] = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
cksum += srec->data[j];
}
/* cksum */
if (offset + 2 > len)
return -1;
for (i=0; i<2; i++)
buf[i] = rec[offset++];
buf[i] = 0;
srec->cksum = strtoul(buf, &e, 16);
if (e == buf || *e != 0)
return -1;
rc = 0xff - cksum;
return rc;
}
static int srec2b(char * infile, FILE * inf,
unsigned char * outbuf, int bufsize)
{
char buffer [ MAX_LINE_LEN ];
unsigned char * buf;
unsigned int nextaddr, baseaddr, maxaddr;
int i;
int lineno;
int len;
struct ihexrec srec;
int rc;
int reccount;
unsigned char datarec;
char * msg = 0;
lineno = 0;
buf = outbuf;
baseaddr = 0;
maxaddr = 0;
reccount = 0;
while (fgets((char *)buffer,MAX_LINE_LEN,inf)!=NULL) {
lineno++;
len = strlen(buffer);
if (buffer[len-1] == '\n')
buffer[--len] = 0;
if (buffer[0] != 0x53)
continue;
rc = srec_readrec(&srec, buffer);
if (rc < 0) {
fprintf(stderr, "%s: ERROR: invalid record at line %d of \"%s\"\n",
progname, lineno, infile);
return -1;
}
else if (rc != srec.cksum) {
fprintf(stderr, "%s: ERROR: checksum mismatch at line %d of \"%s\"\n",
progname, lineno, infile);
fprintf(stderr, "%s: checksum=0x%02x, computed checksum=0x%02x\n",
progname, srec.cksum, rc);
return -1;
}
datarec=0;
switch (srec.rectyp) {
case 0x30: /* S0 - header record*/
/* skip */
break;
case 0x31: /* S1 - 16 bit address data record */
datarec=1;
msg="%s: ERROR: address 0x%04x out of range at line %d of %s\n";
break;
case 0x32: /* S2 - 24 bit address data record */
datarec=1;
msg="%s: ERROR: address 0x%06x out of range at line %d of %s\n";
break;
case 0x33: /* S3 - 32 bit address data record */
datarec=1;
msg="%s: ERROR: address 0x%08x out of range at line %d of %s\n";
break;
case 0x34: /* S4 - symbol record (LSI extension) */
fprintf(stderr,
"%s: ERROR: not supported record at line %d of %s\n",
progname, lineno, infile);
return -1;
case 0x35: /* S5 - count of S1,S2 and S3 records previously tx'd */
if (srec.loadofs != reccount){
fprintf(stderr,
"%s: ERROR: count of transmitted data records mismatch "
"at line %d of \"%s\"\n",
progname, lineno, infile);
fprintf(stderr, "%s: transmitted data records= %d, expected "
"value= %d\n",
progname, reccount, srec.loadofs);
return -1;
}
break;
case 0x37: /* S7 Record - end record for 32 bit address data */
case 0x38: /* S8 Record - end record for 24 bit address data */
case 0x39: /* S9 Record - end record for 16 bit address data */
return maxaddr;
default:
fprintf(stderr,
"%s: ERROR: don't know how to deal with rectype S%d "
"at line %d of %s\n",
progname, srec.rectyp, lineno, infile);
return -1;
}
if (datarec == 1) {
nextaddr = srec.loadofs + baseaddr;
if (nextaddr + srec.reclen > bufsize) {
fprintf(stderr, msg, progname, nextaddr+srec.reclen, lineno, infile);
return -1;
}
for (i=0; i<srec.reclen; i++)
buf[nextaddr+i] = srec.data[i];
if (nextaddr+srec.reclen > maxaddr)
maxaddr = nextaddr+srec.reclen;
reccount++;
}
}
fprintf(stderr,
"%s: WARNING: no end of file record found for Motorola S-Records "
"file \"%s\"\n",
progname, infile);
return maxaddr;
}
/*
* Simple itoa() implementation. Caller needs to allocate enough
* space in buf. Only positive integers are handled.
*/
static char *itoa_simple(int n, char *buf, int base)
{
div_t q;
char c, *cp, *cp2;
cp = buf;
/*
* Divide by base until the number disappeared, but ensure at least
* one digit will be emitted.
*/
do {
q = div(n, base);
n = q.quot;
if (q.rem >= 10)
c = q.rem - 10 + 'a';
else
c = q.rem + '0';
*cp++ = c;
} while (q.quot != 0);
/* Terminate the string. */
*cp-- = '\0';
/* Now revert the result string. */
cp2 = buf;
while (cp > cp2) {
c = *cp;
*cp-- = *cp2;
*cp2++ = c;
}
return buf;
}
static int fileio_rbin(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size)
{
int rc;
switch (fio->op) {
case FIO_READ:
rc = fread(buf, 1, size, f);
break;
case FIO_WRITE:
rc = fwrite(buf, 1, size, f);
break;
default:
fprintf(stderr, "%s: fileio: invalid operation=%d\n",
progname, fio->op);
return -1;
}
if (rc < 0 || (fio->op == FIO_WRITE && rc < size)) {
fprintf(stderr,
"%s: %s error %s %s: %s; %s %d of the expected %d bytes\n",
progname, fio->iodesc, fio->dir, filename, strerror(errno),
fio->rw, rc, size);
return -1;
}
return rc;
}
static int fileio_imm(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size)
{
int rc = 0;
char * e, * p;
unsigned long b;
int loc;
switch (fio->op) {
case FIO_READ:
loc = 0;
p = strtok(filename, " ,");
while (p != NULL && loc < size) {
b = strtoul(p, &e, 0);
/* check for binary formated (0b10101001) strings */
b = (strncmp (p, "0b", 2))?
strtoul (p, &e, 0):
strtoul (p + 2, &e, 2);
if (*e != 0) {
fprintf(stderr,
"%s: invalid byte value (%s) specified for immediate mode\n",
progname, p);
return -1;
}
buf[loc++] = b;
p = strtok(NULL, " ,");
rc = loc;
}
break;
default:
fprintf(stderr, "%s: fileio: invalid operation=%d\n",
progname, fio->op);
return -1;
}
if (rc < 0 || (fio->op == FIO_WRITE && rc < size)) {
fprintf(stderr,
"%s: %s error %s %s: %s; %s %d of the expected %d bytes\n",
progname, fio->iodesc, fio->dir, filename, strerror(errno),
fio->rw, rc, size);
return -1;
}
return rc;
}
static int fileio_ihex(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size)
{
int rc;
switch (fio->op) {
case FIO_WRITE:
rc = b2ihex(buf, size, 32, 0, filename, f);
if (rc < 0) {
return -1;
}
break;
case FIO_READ:
rc = ihex2b(filename, f, buf, size);
if (rc < 0)
return -1;
break;
default:
fprintf(stderr, "%s: invalid Intex Hex file I/O operation=%d\n",
progname, fio->op);
return -1;
break;
}
return rc;
}
static int fileio_srec(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size)
{
int rc;
switch (fio->op) {
case FIO_WRITE:
rc = b2srec(buf, size, 32, 0, filename, f);
if (rc < 0) {
return -1;
}
break;
case FIO_READ:
rc = srec2b(filename, f, buf, size);
if (rc < 0)
return -1;
break;
default:
fprintf(stderr, "%s: ERROR: invalid Motorola S-Records file I/O "
"operation=%d\n",
progname, fio->op);
return -1;
break;
}
return rc;
}
static int fileio_num(struct fioparms * fio,
char * filename, FILE * f, unsigned char * buf, int size,
FILEFMT fmt)
{
const char *prefix;
char cbuf[20];
int base, i, num;
switch (fmt) {
case FMT_HEX:
prefix = "0x";
base = 16;
break;
default:
case FMT_DEC:
prefix = "";
base = 10;
break;
case FMT_OCT:
prefix = "0";
base = 8;
break;
case FMT_BIN:
prefix = "0b";
base = 2;
break;
}
switch (fio->op) {
case FIO_WRITE:
break;
default:
fprintf(stderr, "%s: fileio: invalid operation=%d\n",
progname, fio->op);
return -1;
}
for (i = 0; i < size; i++) {
if (i > 0) {
if (putc(',', f) == EOF)
goto writeerr;
}
num = (unsigned int)buf[i];
/*
* For a base of 8 and a value < 8 to convert, don't write the
* prefix. The conversion will be indistinguishable from a
* decimal one then.
*/
if (prefix[0] != '\0' && !(base == 8 && num < 8)) {
if (fputs(prefix, f) == EOF)
goto writeerr;
}
itoa_simple(num, cbuf, base);
if (fputs(cbuf, f) == EOF)
goto writeerr;
}
if (putc('\n', f) == EOF)
goto writeerr;
return 0;
writeerr:
fprintf(stderr, "%s: error writing to %s: %s\n",
progname, filename, strerror(errno));
return -1;
}
int fileio_setparms(int op, struct fioparms * fp)
{
fp->op = op;
switch (op) {
case FIO_READ:
fp->mode = "r";
fp->iodesc = "input";
fp->dir = "from";
fp->rw = "read";
break;
case FIO_WRITE:
fp->mode = "w";
fp->iodesc = "output";
fp->dir = "to";
fp->rw = "wrote";
break;
default:
fprintf(stderr, "%s: invalid I/O operation %d\n",
progname, op);
return -1;
break;
}
return 0;
}
static int fmt_autodetect(char * fname)
{
FILE * f;
unsigned char buf[MAX_LINE_LEN];
int i;
int len;
int found;
f = fopen(fname, "r");
if (f == NULL) {
fprintf(stderr, "%s: error opening %s: %s\n",
progname, fname, strerror(errno));
return -1;
}
while (fgets((char *)buf, MAX_LINE_LEN, f)!=NULL) {
buf[MAX_LINE_LEN-1] = 0;
len = strlen((char *)buf);
if (buf[len-1] == '\n')
buf[--len] = 0;
/* check for binary data */
found = 0;
for (i=0; i<len; i++) {
if (buf[i] > 127) {
found = 1;
break;
}
}
if (found) {
fclose(f);
return FMT_RBIN;
}
/* check for lines that look like intel hex */
if ((buf[0] == ':') && (len >= 11)) {
found = 1;
for (i=1; i<len; i++) {
if (!isxdigit(buf[1])) {
found = 0;
break;
}
}
if (found) {
fclose(f);
return FMT_IHEX;
}
}
/* check for lines that look like motorola s-record */
if ((buf[0] == 'S') && (len >= 10) && isdigit(buf[1])) {
found = 1;
for (i=1; i<len; i++) {
if (!isxdigit(buf[1])) {
found = 0;
break;
}
}