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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, see <http://www.gnu.org/licenses/>.
*/
/* $Id$ */
#include "ac_cfg.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <stdint.h>
#ifdef HAVE_LIBELF
#ifdef HAVE_LIBELF_H
#include <libelf.h>
#elif defined(HAVE_LIBELF_LIBELF_H)
#include <libelf/libelf.h>
#endif
#ifndef EM_AVR32
# define EM_AVR32 0x18ad /* inofficial */
#endif
#endif
#include "avrdude.h"
#include "libavrdude.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,
AVRMEM * mem, int bufsize, unsigned int fileoffset);
static int b2srec(unsigned char * inbuf, int bufsize,
int recsize, int startaddr,
char * outfile, FILE * outf);
static int srec2b(char * infile, FILE * inf,
AVRMEM * mem, int bufsize, unsigned int fileoffset);
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, AVRMEM * mem, int size);
static int fileio_ihex(struct fioparms * fio,
char * filename, FILE * f, AVRMEM * mem, int size);
static int fileio_srec(struct fioparms * fio,
char * filename, FILE * f, AVRMEM * mem, int size);
#ifdef HAVE_LIBELF
static int elf2b(char * infile, FILE * inf,
AVRMEM * mem, struct avrpart * p,
int bufsize, unsigned int fileoffset);
static int fileio_elf(struct fioparms * fio,
char * filename, FILE * f, AVRMEM * mem,
struct avrpart * p, int size);
#endif
static int fileio_num(struct fioparms * fio,
char * filename, FILE * f, AVRMEM * mem, 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;
case FMT_ELF : return "ELF"; 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) {
avrdude_message(MSG_INFO, "%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,
AVRMEM * mem, int bufsize, unsigned int fileoffset)
{
char buffer [ MAX_LINE_LEN ];
unsigned int nextaddr, baseaddr, maxaddr;
int i;
int lineno;
int len;
struct ihexrec ihex;
int rc;
lineno = 0;
baseaddr = 0;
maxaddr = 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) {
avrdude_message(MSG_INFO, "%s: invalid record at line %d of \"%s\"\n",
progname, lineno, infile);
return -1;
}
else if (rc != ihex.cksum) {
avrdude_message(MSG_INFO, "%s: ERROR: checksum mismatch at line %d of \"%s\"\n",
progname, lineno, infile);
avrdude_message(MSG_INFO, "%s: checksum=0x%02x, computed checksum=0x%02x\n",
progname, ihex.cksum, rc);
return -1;
}
switch (ihex.rectyp) {
case 0: /* data record */
if (fileoffset != 0 && baseaddr < fileoffset) {
avrdude_message(MSG_INFO, "%s: ERROR: address 0x%04x out of range (below fileoffset 0x%x) at line %d of %s\n",
progname, baseaddr, fileoffset, lineno, infile);
return -1;
}
nextaddr = ihex.loadofs + baseaddr - fileoffset;
if (nextaddr + ihex.reclen > bufsize) {
avrdude_message(MSG_INFO, "%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++) {
mem->buf[nextaddr+i] = ihex.data[i];
mem->tags[nextaddr+i] = TAG_ALLOCATED;
}
if (nextaddr+ihex.reclen > maxaddr)
maxaddr = nextaddr+ihex.reclen;
break;
case 1: /* end of file record */
return maxaddr;
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;
break;
case 5: /* start linear address record */
/* we don't do anything with the start address */
break;
default:
avrdude_message(MSG_INFO, "%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 */
if (maxaddr == 0) {
avrdude_message(MSG_INFO, "%s: ERROR: No valid record found in Intel Hex "
"file \"%s\"\n",
progname, infile);
return -1;
}
else {
avrdude_message(MSG_INFO, "%s: WARNING: no end of file record found for Intel Hex "
"file \"%s\"\n",
progname, infile);
return maxaddr;
}
}
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) {
avrdude_message(MSG_INFO, "%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 {
avrdude_message(MSG_INFO, "%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,
AVRMEM * mem, int bufsize, unsigned int fileoffset)
{
char buffer [ MAX_LINE_LEN ];
unsigned int nextaddr, maxaddr;
int i;
int lineno;
int len;
struct ihexrec srec;
int rc;
int reccount;
unsigned char datarec;
char * msg = 0;
lineno = 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) {
avrdude_message(MSG_INFO, "%s: ERROR: invalid record at line %d of \"%s\"\n",
progname, lineno, infile);
return -1;
}
else if (rc != srec.cksum) {
avrdude_message(MSG_INFO, "%s: ERROR: checksum mismatch at line %d of \"%s\"\n",
progname, lineno, infile);
avrdude_message(MSG_INFO, "%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 %sat 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 %sat 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 %sat line %d of %s\n";
break;
case 0x34: /* S4 - symbol record (LSI extension) */
avrdude_message(MSG_INFO, "%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){
avrdude_message(MSG_INFO, "%s: ERROR: count of transmitted data records mismatch "
"at line %d of \"%s\"\n",
progname, lineno, infile);
avrdude_message(MSG_INFO, "%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:
avrdude_message(MSG_INFO, "%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;
if (nextaddr < fileoffset) {
avrdude_message(MSG_INFO, msg, progname, nextaddr,
"(below fileoffset) ",
lineno, infile);
return -1;
}
nextaddr -= fileoffset;
if (nextaddr + srec.reclen > bufsize) {
avrdude_message(MSG_INFO, msg, progname, nextaddr+srec.reclen, "",
lineno, infile);
return -1;
}
for (i=0; i<srec.reclen; i++) {
mem->buf[nextaddr+i] = srec.data[i];
mem->tags[nextaddr+i] = TAG_ALLOCATED;
}
if (nextaddr+srec.reclen > maxaddr)
maxaddr = nextaddr+srec.reclen;
reccount++;
}
}
avrdude_message(MSG_INFO, "%s: WARNING: no end of file record found for Motorola S-Records "
"file \"%s\"\n",
progname, infile);
return maxaddr;
}
#ifdef HAVE_LIBELF
/*
* Determine whether the ELF file section pointed to by `sh' fits
* completely into the program header segment pointed to by `ph'.
*
* Assumes the section has been checked already before to actually
* contain data (SHF_ALLOC, SHT_PROGBITS, sh_size > 0).
*
* Sometimes, program header segments might be larger than the actual
* file sections. On VM architectures, this is used to allow mmapping
* the entire ELF file "as is" (including things like the program
* header table itself).
*/
static inline
int is_section_in_segment(Elf32_Shdr *sh, Elf32_Phdr *ph)
{
if (sh->sh_offset < ph->p_offset)
return 0;
if (sh->sh_offset + sh->sh_size > ph->p_offset + ph->p_filesz)
return 0;
return 1;
}
/*
* Return the ELF section descriptor that corresponds to program
* header `ph'. The program header is expected to be of p_type
* PT_LOAD, and to have a nonzero p_filesz. (PT_LOAD sections with a
* zero p_filesz are typically RAM sections that are not initialized
* by file data, e.g. ".bss".)
*/
static Elf_Scn *elf_get_scn(Elf *e, Elf32_Phdr *ph, Elf32_Shdr **shptr)
{
Elf_Scn *s = NULL;
while ((s = elf_nextscn(e, s)) != NULL) {
Elf32_Shdr *sh;
size_t ndx = elf_ndxscn(s);
if ((sh = elf32_getshdr(s)) == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: Error reading section #%u header: %s\n",
progname, (unsigned int)ndx, elf_errmsg(-1));
continue;
}
if ((sh->sh_flags & SHF_ALLOC) == 0 ||
sh->sh_type != SHT_PROGBITS)
/* we are only interested in PROGBITS, ALLOC sections */
continue;
if (sh->sh_size == 0)
/* we are not interested in empty sections */
continue;
if (is_section_in_segment(sh, ph)) {
/* yeah, we found it */
*shptr = sh;
return s;
}
}
avrdude_message(MSG_INFO, "%s: ERROR: Cannot find a matching section for "
"program header entry @p_vaddr 0x%x\n",
progname, ph->p_vaddr);
return NULL;
}
static int elf_mem_limits(AVRMEM *mem, struct avrpart * p,
unsigned int *lowbound,
unsigned int *highbound,
unsigned int *fileoff)
{
int rv = 0;
if (p->flags & AVRPART_AVR32) {
if (strcmp(mem->desc, "flash") == 0) {
*lowbound = 0x80000000;
*highbound = 0xffffffff;
*fileoff = 0;
} else {
rv = -1;
}
} else {
if (strcmp(mem->desc, "flash") == 0 ||
strcmp(mem->desc, "boot") == 0 ||
strcmp(mem->desc, "application") == 0 ||
strcmp(mem->desc, "apptable") == 0) {
*lowbound = 0;
*highbound = 0x7ffff; /* max 8 MiB */
*fileoff = 0;
} else if (strcmp(mem->desc, "eeprom") == 0) {
*lowbound = 0x810000;
*highbound = 0x81ffff; /* max 64 KiB */
*fileoff = 0;
} else if (strcmp(mem->desc, "lfuse") == 0) {
*lowbound = 0x820000;
*highbound = 0x82ffff;
*fileoff = 0;
} else if (strcmp(mem->desc, "hfuse") == 0) {
*lowbound = 0x820000;
*highbound = 0x82ffff;
*fileoff = 1;
} else if (strcmp(mem->desc, "efuse") == 0) {
*lowbound = 0x820000;
*highbound = 0x82ffff;
*fileoff = 2;
} else if (strncmp(mem->desc, "fuse", 4) == 0 &&
(mem->desc[4] >= '0' && mem->desc[4] <= '9')) {
/* Xmega fuseN */
*lowbound = 0x820000;
*highbound = 0x82ffff;
*fileoff = mem->desc[4] - '0';
} else if (strncmp(mem->desc, "lock", 4) == 0) {
*lowbound = 0x830000;
*highbound = 0x83ffff;
*fileoff = 0;
} else {
rv = -1;
}
}
return rv;
}
static int elf2b(char * infile, FILE * inf,
AVRMEM * mem, struct avrpart * p,
int bufsize, unsigned int fileoffset)
{
Elf *e;
int rv = -1;
unsigned int low, high, foff;
if (elf_mem_limits(mem, p, &low, &high, &foff) != 0) {
avrdude_message(MSG_INFO, "%s: ERROR: Cannot handle \"%s\" memory region from ELF file\n",
progname, mem->desc);
return -1;
}
/*
* The Xmega memory regions for "boot", "application", and
* "apptable" are actually sub-regions of "flash". Refine the
* applicable limits. This allows to select only the appropriate
* sections out of an ELF file that contains section data for more
* than one sub-segment.
*/
if ((p->flags & AVRPART_HAS_PDI) != 0 &&
(strcmp(mem->desc, "boot") == 0 ||
strcmp(mem->desc, "application") == 0 ||
strcmp(mem->desc, "apptable") == 0)) {
AVRMEM *flashmem = avr_locate_mem(p, "flash");
if (flashmem == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: No \"flash\" memory region found, "
"cannot compute bounds of \"%s\" sub-region.\n",
progname, mem->desc);
return -1;
}
/* The config file offsets are PDI offsets, rebase to 0. */
low = mem->offset - flashmem->offset;
high = low + mem->size - 1;
}
if (elf_version(EV_CURRENT) == EV_NONE) {
avrdude_message(MSG_INFO, "%s: ERROR: ELF library initialization failed: %s\n",
progname, elf_errmsg(-1));
return -1;
}
if ((e = elf_begin(fileno(inf), ELF_C_READ, NULL)) == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: Cannot open \"%s\" as an ELF file: %s\n",
progname, infile, elf_errmsg(-1));
return -1;
}
if (elf_kind(e) != ELF_K_ELF) {
avrdude_message(MSG_INFO, "%s: ERROR: Cannot use \"%s\" as an ELF input file\n",
progname, infile);
goto done;
}
size_t i, isize;
const char *id = elf_getident(e, &isize);
if (id == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: Error reading ident area of \"%s\": %s\n",
progname, infile, elf_errmsg(-1));
goto done;
}
const char *endianname;
unsigned char endianess;
if (p->flags & AVRPART_AVR32) {
endianess = ELFDATA2MSB;
endianname = "little";
} else {
endianess = ELFDATA2LSB;
endianname = "big";
}
if (id[EI_CLASS] != ELFCLASS32 ||
id[EI_DATA] != endianess) {
avrdude_message(MSG_INFO, "%s: ERROR: ELF file \"%s\" is not a "
"32-bit, %s-endian file that was expected\n",
progname, infile, endianname);
goto done;
}
Elf32_Ehdr *eh;
if ((eh = elf32_getehdr(e)) == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: Error reading ehdr of \"%s\": %s\n",
progname, infile, elf_errmsg(-1));
goto done;
}
if (eh->e_type != ET_EXEC) {
avrdude_message(MSG_INFO, "%s: ERROR: ELF file \"%s\" is not an executable file\n",
progname, infile);
goto done;
}
const char *mname;
uint16_t machine;
if (p->flags & AVRPART_AVR32) {
machine = EM_AVR32;
mname = "AVR32";
} else {
machine = EM_AVR;
mname = "AVR";
}
if (eh->e_machine != machine) {
avrdude_message(MSG_INFO, "%s: ERROR: ELF file \"%s\" is not for machine %s\n",
progname, infile, mname);
goto done;
}
if (eh->e_phnum == 0xffff /* PN_XNUM */) {
avrdude_message(MSG_INFO, "%s: ERROR: ELF file \"%s\" uses extended "
"program header numbers which are not expected\n",
progname, infile);
goto done;
}
Elf32_Phdr *ph;
if ((ph = elf32_getphdr(e)) == NULL) {
avrdude_message(MSG_INFO, "%s: ERROR: Error reading program header table of \"%s\": %s\n",
progname, infile, elf_errmsg(-1));
goto done;
}
size_t sndx;
if (elf_getshdrstrndx(e, &sndx) != 0) {
avrdude_message(MSG_INFO, "%s: ERROR: Error obtaining section name string table: %s\n",
progname, elf_errmsg(-1));
sndx = 0;
}
/*
* Walk the program header table, pick up entries that are of type
* PT_LOAD, and have a non-zero p_filesz.
*/
for (i = 0; i < eh->e_phnum; i++) {
if (ph[i].p_type != PT_LOAD ||
ph[i].p_filesz == 0)
continue;
avrdude_message(MSG_NOTICE2, "%s: Considering PT_LOAD program header entry #%d:\n"
" p_vaddr 0x%x, p_paddr 0x%x, p_filesz %d\n",
progname, i, ph[i].p_vaddr, ph[i].p_paddr, ph[i].p_filesz);
Elf32_Shdr *sh;
Elf_Scn *s = elf_get_scn(e, ph + i, &sh);
if (s == NULL)
continue;
if ((sh->sh_flags & SHF_ALLOC) && sh->sh_size) {
const char *sname;
if (sndx != 0) {
sname = elf_strptr(e, sndx, sh->sh_name);
} else {
sname = "*unknown*";
}
unsigned int lma;
lma = ph[i].p_paddr + sh->sh_offset - ph[i].p_offset;
avrdude_message(MSG_NOTICE2, "%s: Found section \"%s\", LMA 0x%x, sh_size %u\n",
progname, sname, lma, sh->sh_size);
if (lma >= low &&
lma + sh->sh_size < high) {
/* OK */
} else {
avrdude_message(MSG_NOTICE2, " => skipping, inappropriate for \"%s\" memory region\n",
mem->desc);
continue;
}
/*
* 1-byte sized memory regions are special: they are used for fuse
* bits, where multiple regions (in the config file) map to a
* single, larger region in the ELF file (e.g. "lfuse", "hfuse",
* and "efuse" all map to ".fuse"). We silently accept a larger
* ELF file region for these, and extract the actual byte to write
* from it, using the "foff" offset obtained above.
*/
if (mem->size != 1 &&
sh->sh_size > mem->size) {
avrdude_message(MSG_INFO, "%s: ERROR: section \"%s\" does not fit into \"%s\" memory:\n"
" 0x%x + %u > %u\n",
progname, sname, mem->desc,
lma, sh->sh_size, mem->size);
continue;
}
Elf_Data *d = NULL;
while ((d = elf_getdata(s, d)) != NULL) {