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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:06 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:06 +0000
commit860acaebec6b57ce27e244cc02a58e6651a4b6c3 (patch)
treeeff5420756a4bd56b40b74c2b828b261f327610b /bfd/ihex.c
parentf9c53ad2d7cb541cbe821d645b90437ac063e5db (diff)
downloadgdb-860acaebec6b57ce27e244cc02a58e6651a4b6c3.tar.gz
Initial revision
Diffstat (limited to 'bfd/ihex.c')
-rw-r--r--bfd/ihex.c1041
1 files changed, 1041 insertions, 0 deletions
diff --git a/bfd/ihex.c b/bfd/ihex.c
new file mode 100644
index 00000000000..b9953d329f5
--- /dev/null
+++ b/bfd/ihex.c
@@ -0,0 +1,1041 @@
+/* BFD back-end for Intel Hex objects.
+ Copyright 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+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. */
+
+/* This is what Intel Hex files look like:
+
+1. INTEL FORMATS
+
+A. Intel 1
+
+ 16-bit address-field format, for files 64k bytes in length or less.
+
+ DATA RECORD
+ Byte 1 Header = colon(:)
+ 2..3 The number of data bytes in hex notation
+ 4..5 High byte of the record load address
+ 6..7 Low byte of the record load address
+ 8..9 Record type, must be "00"
+ 10..x Data bytes in hex notation:
+ x = (number of bytes - 1) * 2 + 11
+ x+1..x+2 Checksum in hex notation
+ x+3..x+4 Carriage return, line feed
+
+ END RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count, must be "00"
+ 4..7 Transfer-address (usually "0000")
+ the jump-to address, execution start address
+ 8..9 Record type, must be "01"
+ 10..11 Checksum, in hex notation
+ 12..13 Carriage return, line feed
+
+B. INTEL 2
+
+ MCS-86 format, using a 20-bit address for files larger than 64K bytes.
+
+ DATA RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count of this record, hex notation
+ 4..5 High byte of the record load address
+ 6..7 Low byte of the record load address
+ 8..9 Record type, must be "00"
+ 10..x The data bytes in hex notation:
+ x = (number of data bytes - 1) * 2 + 11
+ x+1..x+2 Checksum in hex notation
+ x+3..x+4 Carriage return, line feed
+
+ EXTENDED ADDRESS RECORD
+ Byte 1 Header = colon(:)
+ 2..3 The byte count, must be "02"
+ 4..7 Load address, must be "0000"
+ 8..9 Record type, must be "02"
+ 10..11 High byte of the offset address
+ 12..13 Low byte of the offset address
+ 14..15 Checksum in hex notation
+ 16..17 Carriage return, line feed
+
+ The checksums are the two's complement of the 8-bit sum
+ without carry of the byte count, offset address, and the
+ record type.
+
+ START ADDRESS RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count, must be "04"
+ 4..7 Load address, must be "0000"
+ 8..9 Record type, must be "03"
+ 10..13 8086 CS value
+ 14..17 8086 IP value
+ 18..19 Checksum in hex notation
+ 20..21 Carriage return, line feed
+
+Another document reports these additional types:
+
+ EXTENDED LINEAR ADDRESS RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count, must be "02"
+ 4..7 Load address, must be "0000"
+ 8..9 Record type, must be "04"
+ 10..13 Upper 16 bits of address of subsequent records
+ 14..15 Checksum in hex notation
+ 16..17 Carriage return, line feed
+
+ START LINEAR ADDRESS RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count, must be "02"
+ 4..7 Load address, must be "0000"
+ 8..9 Record type, must be "05"
+ 10..13 Upper 16 bits of start address
+ 14..15 Checksum in hex notation
+ 16..17 Carriage return, line feed
+
+The MRI compiler uses this, which is a repeat of type 5:
+
+ EXTENDED START RECORD
+ Byte 1 Header = colon (:)
+ 2..3 The byte count, must be "04"
+ 4..7 Load address, must be "0000"
+ 8..9 Record type, must be "05"
+ 10..13 Upper 16 bits of start address
+ 14..17 Lower 16 bits of start address
+ 18..19 Checksum in hex notation
+ 20..21 Carriage return, line feed
+*/
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libiberty.h"
+
+#include <ctype.h>
+
+static void ihex_init PARAMS ((void));
+static boolean ihex_mkobject PARAMS ((bfd *));
+static INLINE int ihex_get_byte PARAMS ((bfd *, boolean *));
+static void ihex_bad_byte PARAMS ((bfd *, unsigned int, int, boolean));
+static boolean ihex_scan PARAMS ((bfd *));
+static const bfd_target *ihex_object_p PARAMS ((bfd *));
+static boolean ihex_read_section PARAMS ((bfd *, asection *, bfd_byte *));
+static boolean ihex_get_section_contents
+ PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
+static boolean ihex_set_section_contents
+ PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
+static boolean ihex_write_record
+ PARAMS ((bfd *, bfd_size_type, bfd_vma, unsigned int, bfd_byte *));
+static boolean ihex_write_object_contents PARAMS ((bfd *));
+static asymbol *ihex_make_empty_symbol PARAMS ((bfd *));
+static boolean ihex_set_arch_mach
+ PARAMS ((bfd *, enum bfd_architecture, unsigned long));
+static int ihex_sizeof_headers PARAMS ((bfd *, boolean));
+
+/* The number of bytes we put on one line during output. */
+
+#define CHUNK (21)
+
+/* Macros for converting between hex and binary. */
+
+#define NIBBLE(x) (hex_value (x))
+#define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1]))
+#define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2))
+#define ISHEX(x) (hex_p (x))
+
+/* When we write out an ihex value, the values can not be output as
+ they are seen. Instead, we hold them in memory in this structure. */
+
+struct ihex_data_list
+{
+ struct ihex_data_list *next;
+ bfd_byte *data;
+ bfd_vma where;
+ bfd_size_type size;
+};
+
+/* The ihex tdata information. */
+
+struct ihex_data_struct
+{
+ struct ihex_data_list *head;
+ struct ihex_data_list *tail;
+};
+
+/* Initialize by filling in the hex conversion array. */
+
+static void
+ihex_init ()
+{
+ static boolean inited;
+
+ if (! inited)
+ {
+ inited = true;
+ hex_init ();
+ }
+}
+
+/* Create an ihex object. */
+
+static boolean
+ihex_mkobject (abfd)
+ bfd *abfd;
+{
+ if (abfd->tdata.ihex_data == NULL)
+ {
+ struct ihex_data_struct *tdata;
+
+ tdata = ((struct ihex_data_struct *)
+ bfd_alloc (abfd, sizeof (struct ihex_data_struct)));
+ if (tdata == NULL)
+ return false;
+ abfd->tdata.ihex_data = tdata;
+ tdata->head = NULL;
+ tdata->tail = NULL;
+ }
+
+ return true;
+}
+
+/* Read a byte from a BFD. Set *ERRORPTR if an error occurred.
+ Return EOF on error or end of file. */
+
+static INLINE int
+ihex_get_byte (abfd, errorptr)
+ bfd *abfd;
+ boolean *errorptr;
+{
+ bfd_byte c;
+
+ if (bfd_read (&c, 1, 1, abfd) != 1)
+ {
+ if (bfd_get_error () != bfd_error_file_truncated)
+ *errorptr = true;
+ return EOF;
+ }
+
+ return (int) (c & 0xff);
+}
+
+/* Report a problem in an Intel Hex file. */
+
+static void
+ihex_bad_byte (abfd, lineno, c, error)
+ bfd *abfd;
+ unsigned int lineno;
+ int c;
+ boolean error;
+{
+ if (c == EOF)
+ {
+ if (! error)
+ bfd_set_error (bfd_error_file_truncated);
+ }
+ else
+ {
+ char buf[10];
+
+ if (! isprint (c))
+ sprintf (buf, "\\%03o", (unsigned int) c);
+ else
+ {
+ buf[0] = c;
+ buf[1] = '\0';
+ }
+ (*_bfd_error_handler)
+ (_("%s:%d: unexpected character `%s' in Intel Hex file\n"),
+ bfd_get_filename (abfd), lineno, buf);
+ bfd_set_error (bfd_error_bad_value);
+ }
+}
+
+/* Read an Intel hex file and turn it into sections. We create a new
+ section for each contiguous set of bytes. */
+
+static boolean
+ihex_scan (abfd)
+ bfd *abfd;
+{
+ bfd_vma segbase;
+ bfd_vma extbase;
+ asection *sec;
+ int lineno;
+ boolean error;
+ bfd_byte *buf = NULL;
+ size_t bufsize;
+ int c;
+
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ goto error_return;
+
+ abfd->start_address = 0;
+
+ segbase = 0;
+ extbase = 0;
+ sec = NULL;
+ lineno = 1;
+ error = false;
+ bufsize = 0;
+ while ((c = ihex_get_byte (abfd, &error)) != EOF)
+ {
+ if (c == '\r')
+ continue;
+ else if (c == '\n')
+ {
+ ++lineno;
+ continue;
+ }
+ else if (c != ':')
+ {
+ ihex_bad_byte (abfd, lineno, c, error);
+ goto error_return;
+ }
+ else
+ {
+ file_ptr pos;
+ char hdr[8];
+ unsigned int i;
+ unsigned int len;
+ bfd_vma addr;
+ unsigned int type;
+ unsigned int chars;
+ unsigned int chksum;
+
+ /* This is a data record. */
+
+ pos = bfd_tell (abfd) - 1;
+
+ /* Read the header bytes. */
+
+ if (bfd_read (hdr, 1, 8, abfd) != 8)
+ goto error_return;
+
+ for (i = 0; i < 8; i++)
+ {
+ if (! ISHEX (hdr[i]))
+ {
+ ihex_bad_byte (abfd, lineno, hdr[i], error);
+ goto error_return;
+ }
+ }
+
+ len = HEX2 (hdr);
+ addr = HEX4 (hdr + 2);
+ type = HEX2 (hdr + 6);
+
+ /* Read the data bytes. */
+
+ chars = len * 2 + 2;
+ if (chars >= bufsize)
+ {
+ buf = (bfd_byte *) bfd_realloc (buf, chars);
+ if (buf == NULL)
+ goto error_return;
+ bufsize = chars;
+ }
+
+ if (bfd_read (buf, 1, chars, abfd) != chars)
+ goto error_return;
+
+ for (i = 0; i < chars; i++)
+ {
+ if (! ISHEX (buf[i]))
+ {
+ ihex_bad_byte (abfd, lineno, hdr[i], error);
+ goto error_return;
+ }
+ }
+
+ /* Check the checksum. */
+ chksum = len + addr + (addr >> 8) + type;
+ for (i = 0; i < len; i++)
+ chksum += HEX2 (buf + 2 * i);
+ if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i))
+ {
+ (*_bfd_error_handler)
+ (_("%s:%d: bad checksum in Intel Hex file (expected %u, found %u)"),
+ bfd_get_filename (abfd), lineno,
+ (- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i));
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ switch (type)
+ {
+ case 0:
+ /* This is a data record. */
+ if (sec != NULL
+ && sec->vma + sec->_raw_size == extbase + segbase + addr)
+ {
+ /* This data goes at the end of the section we are
+ currently building. */
+ sec->_raw_size += len;
+ }
+ else if (len > 0)
+ {
+ char secbuf[20];
+ char *secname;
+
+ sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1);
+ secname = (char *) bfd_alloc (abfd, strlen (secbuf) + 1);
+ if (secname == NULL)
+ goto error_return;
+ strcpy (secname, secbuf);
+ sec = bfd_make_section (abfd, secname);
+ if (sec == NULL)
+ goto error_return;
+ sec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC;
+ sec->vma = extbase + segbase + addr;
+ sec->lma = extbase + segbase + addr;
+ sec->_raw_size = len;
+ sec->filepos = pos;
+ }
+ break;
+
+ case 1:
+ /* An end record. */
+ if (abfd->start_address == 0)
+ abfd->start_address = addr;
+ if (buf != NULL)
+ free (buf);
+ return true;
+
+ case 2:
+ /* An extended address record. */
+ if (len != 2)
+ {
+ (*_bfd_error_handler)
+ (_("%s:%d: bad extended address record length in Intel Hex file"),
+ bfd_get_filename (abfd), lineno);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ segbase = HEX4 (buf) << 4;
+
+ sec = NULL;
+
+ break;
+
+ case 3:
+ /* An extended start address record. */
+ if (len != 4)
+ {
+ (*_bfd_error_handler)
+ (_("%s:%d: bad extended start address length in Intel Hex file"),
+ bfd_get_filename (abfd), lineno);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4);
+
+ sec = NULL;
+
+ break;
+
+ case 4:
+ /* An extended linear address record. */
+ if (len != 2)
+ {
+ (*_bfd_error_handler)
+ (_("%s:%d: bad extended linear address record length in Intel Hex file"),
+ bfd_get_filename (abfd), lineno);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ extbase = HEX4 (buf) << 16;
+
+ sec = NULL;
+
+ break;
+
+ case 5:
+ /* An extended linear start address record. */
+ if (len != 2 && len != 4)
+ {
+ (*_bfd_error_handler)
+ (_("%s:%d: bad extended linear start address length in Intel Hex file"),
+ bfd_get_filename (abfd), lineno);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ if (len == 2)
+ abfd->start_address += HEX4 (buf) << 16;
+ else
+ abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4);
+
+ sec = NULL;
+
+ break;
+
+ default:
+ (*_bfd_error_handler)
+ (_("%s:%d: unrecognized ihex type %u in Intel Hex file\n"),
+ bfd_get_filename (abfd), lineno, type);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+ }
+ }
+
+ if (error)
+ goto error_return;
+
+ if (buf != NULL)
+ free (buf);
+
+ return true;
+
+ error_return:
+ if (buf != NULL)
+ free (buf);
+ return false;
+}
+
+/* Try to recognize an Intel Hex file. */
+
+static const bfd_target *
+ihex_object_p (abfd)
+ bfd *abfd;
+{
+ bfd_byte b[9];
+ unsigned int i;
+ unsigned int type;
+
+ ihex_init ();
+
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ return NULL;
+ if (bfd_read (b, 1, 9, abfd) != 9)
+ {
+ if (bfd_get_error () == bfd_error_file_truncated)
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ if (b[0] != ':')
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ for (i = 1; i < 9; i++)
+ {
+ if (! ISHEX (b[i]))
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+ }
+
+ type = HEX2 (b + 7);
+ if (type > 5)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ /* OK, it looks like it really is an Intel Hex file. */
+
+ if (! ihex_mkobject (abfd)
+ || ! ihex_scan (abfd))
+ return NULL;
+
+ return abfd->xvec;
+}
+
+/* Read the contents of a section in an Intel Hex file. */
+
+static boolean
+ihex_read_section (abfd, section, contents)
+ bfd *abfd;
+ asection *section;
+ bfd_byte *contents;
+{
+ int c;
+ bfd_byte *p;
+ bfd_byte *buf = NULL;
+ size_t bufsize;
+ boolean error;
+
+ if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0)
+ goto error_return;
+
+ p = contents;
+ bufsize = 0;
+ error = false;
+ while ((c = ihex_get_byte (abfd, &error)) != EOF)
+ {
+ char hdr[8];
+ unsigned int len;
+ bfd_vma addr;
+ unsigned int type;
+ unsigned int i;
+
+ if (c == '\r' || c == '\n')
+ continue;
+
+ /* This is called after ihex_scan has succeeded, so we ought to
+ know the exact format. */
+ BFD_ASSERT (c == ':');
+
+ if (bfd_read (hdr, 1, 8, abfd) != 8)
+ goto error_return;
+
+ len = HEX2 (hdr);
+ addr = HEX4 (hdr + 2);
+ type = HEX2 (hdr + 6);
+
+ /* We should only see type 0 records here. */
+ if (type != 0)
+ {
+ (*_bfd_error_handler)
+ (_("%s: internal error in ihex_read_section"),
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ if (len * 2 > bufsize)
+ {
+ buf = (bfd_byte *) bfd_realloc (buf, len * 2);
+ if (buf == NULL)
+ goto error_return;
+ bufsize = len * 2;
+ }
+
+ if (bfd_read (buf, 1, len * 2, abfd) != len * 2)
+ goto error_return;
+
+ for (i = 0; i < len; i++)
+ *p++ = HEX2 (buf + 2 * i);
+ if ((bfd_size_type) (p - contents) >= section->_raw_size)
+ {
+ /* We've read everything in the section. */
+ if (buf != NULL)
+ free (buf);
+ return true;
+ }
+
+ /* Skip the checksum. */
+ if (bfd_read (buf, 1, 2, abfd) != 2)
+ goto error_return;
+ }
+
+ if ((bfd_size_type) (p - contents) < section->_raw_size)
+ {
+ (*_bfd_error_handler)
+ (_("%s: bad section length in ihex_read_section"),
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ if (buf != NULL)
+ free (buf);
+
+ return true;
+
+ error_return:
+ if (buf != NULL)
+ free (buf);
+ return false;
+}
+
+/* Get the contents of a section in an Intel Hex file. */
+
+static boolean
+ihex_get_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ asection *section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
+{
+ if (section->used_by_bfd == NULL)
+ {
+ section->used_by_bfd = bfd_alloc (abfd, section->_raw_size);
+ if (section->used_by_bfd == NULL)
+ return false;
+ if (! ihex_read_section (abfd, section, section->used_by_bfd))
+ return false;
+ }
+
+ memcpy (location, (bfd_byte *) section->used_by_bfd + offset,
+ (size_t) count);
+
+ return true;
+}
+
+/* Set the contents of a section in an Intel Hex file. */
+
+static boolean
+ihex_set_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ asection *section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
+{
+ struct ihex_data_list *n;
+ bfd_byte *data;
+ struct ihex_data_struct *tdata;
+
+ if (count == 0
+ || (section->flags & SEC_ALLOC) == 0
+ || (section->flags & SEC_LOAD) == 0)
+ return true;
+
+ n = ((struct ihex_data_list *)
+ bfd_alloc (abfd, sizeof (struct ihex_data_list)));
+ if (n == NULL)
+ return false;
+
+ data = (bfd_byte *) bfd_alloc (abfd, count);
+ if (data == NULL)
+ return false;
+ memcpy (data, location, (size_t) count);
+
+ n->data = data;
+ n->where = section->lma + offset;
+ n->size = count;
+
+ /* Sort the records by address. Optimize for the common case of
+ adding a record to the end of the list. */
+ tdata = abfd->tdata.ihex_data;
+ if (tdata->tail != NULL
+ && n->where >= tdata->tail->where)
+ {
+ tdata->tail->next = n;
+ n->next = NULL;
+ tdata->tail = n;
+ }
+ else
+ {
+ register struct ihex_data_list **pp;
+
+ for (pp = &tdata->head;
+ *pp != NULL && (*pp)->where < n->where;
+ pp = &(*pp)->next)
+ ;
+ n->next = *pp;
+ *pp = n;
+ if (n->next == NULL)
+ tdata->tail = n;
+ }
+
+ return true;
+}
+
+/* Write a record out to an Intel Hex file. */
+
+static boolean
+ihex_write_record (abfd, count, addr, type, data)
+ bfd *abfd;
+ bfd_size_type count;
+ bfd_vma addr;
+ unsigned int type;
+ bfd_byte *data;
+{
+ static const char digs[] = "0123456789ABCDEF";
+ char buf[9 + CHUNK * 2 + 4];
+ char *p;
+ unsigned int chksum;
+ unsigned int i;
+
+#define TOHEX(buf, v) \
+ ((buf)[0] = digs[((v) >> 4) & 0xf], (buf)[1] = digs[(v) & 0xf])
+
+ buf[0] = ':';
+ TOHEX (buf + 1, count);
+ TOHEX (buf + 3, (addr >> 8) & 0xff);
+ TOHEX (buf + 5, addr & 0xff);
+ TOHEX (buf + 7, type);
+
+ chksum = count + addr + (addr >> 8) + type;
+
+ for (i = 0, p = buf + 9; i < count; i++, p += 2, data++)
+ {
+ TOHEX (p, *data);
+ chksum += *data;
+ }
+
+ TOHEX (p, (- chksum) & 0xff);
+ p[2] = '\r';
+ p[3] = '\n';
+
+ if (bfd_write (buf, 1, 9 + count * 2 + 4, abfd) != 9 + count * 2 + 4)
+ return false;
+
+ return true;
+}
+
+/* Write out an Intel Hex file. */
+
+static boolean
+ihex_write_object_contents (abfd)
+ bfd *abfd;
+{
+ bfd_vma segbase;
+ bfd_vma extbase;
+ struct ihex_data_list *l;
+
+ segbase = 0;
+ extbase = 0;
+ for (l = abfd->tdata.ihex_data->head; l != NULL; l = l->next)
+ {
+ bfd_vma where;
+ bfd_byte *p;
+ bfd_size_type count;
+
+ where = l->where;
+ p = l->data;
+ count = l->size;
+ while (count > 0)
+ {
+ bfd_size_type now;
+
+ now = count;
+ if (now > CHUNK)
+ now = CHUNK;
+
+ if (where > segbase + extbase + 0xffff)
+ {
+ bfd_byte addr[2];
+
+ /* We need a new base address. */
+ if (where <= 0xfffff)
+ {
+ /* The addresses should be sorted. */
+ BFD_ASSERT (extbase == 0);
+
+ segbase = where & 0xf0000;
+ addr[0] = (bfd_byte)(segbase >> 12) & 0xff;
+ addr[1] = (bfd_byte)(segbase >> 4) & 0xff;
+ if (! ihex_write_record (abfd, 2, 0, 2, addr))
+ return false;
+ }
+ else
+ {
+ /* The extended address record and the extended
+ linear address record are combined, at least by
+ some readers. We need an extended linear address
+ record here, so if we've already written out an
+ extended address record, zero it out to avoid
+ confusion. */
+ if (segbase != 0)
+ {
+ addr[0] = 0;
+ addr[1] = 0;
+ if (! ihex_write_record (abfd, 2, 0, 2, addr))
+ return false;
+ segbase = 0;
+ }
+
+ extbase = where & 0xffff0000;
+ if (where > extbase + 0xffff)
+ {
+ char buf[20];
+
+ sprintf_vma (buf, where);
+ (*_bfd_error_handler)
+ (_("%s: address 0x%s out of range for Intex Hex file"),
+ bfd_get_filename (abfd), buf);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ addr[0] = (bfd_byte)(extbase >> 24) & 0xff;
+ addr[1] = (bfd_byte)(extbase >> 16) & 0xff;
+ if (! ihex_write_record (abfd, 2, 0, 4, addr))
+ return false;
+ }
+ }
+
+ if (! ihex_write_record (abfd, now, where - (extbase + segbase),
+ 0, p))
+ return false;
+
+ where += now;
+ p += now;
+ count -= now;
+ }
+ }
+
+ if (abfd->start_address != 0)
+ {
+ bfd_vma start;
+ bfd_byte startbuf[4];
+
+ start = abfd->start_address;
+
+ if (start <= 0xfffff)
+ {
+ startbuf[0] = (bfd_byte)((start & 0xf0000) >> 12) & 0xff;
+ startbuf[1] = 0;
+ startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
+ startbuf[3] = (bfd_byte)start & 0xff;
+ if (! ihex_write_record (abfd, 4, 0, 3, startbuf))
+ return false;
+ }
+ else
+ {
+ startbuf[0] = (bfd_byte)(start >> 24) & 0xff;
+ startbuf[1] = (bfd_byte)(start >> 16) & 0xff;
+ startbuf[2] = (bfd_byte)(start >> 8) & 0xff;
+ startbuf[3] = (bfd_byte)start & 0xff;
+ if (! ihex_write_record (abfd, 4, 0, 5, startbuf))
+ return false;
+ }
+ }
+
+ if (! ihex_write_record (abfd, 0, 0, 1, NULL))
+ return false;
+
+ return true;
+}
+
+/* Make an empty symbol. This is required only because
+ bfd_make_section_anyway wants to create a symbol for the section. */
+
+static asymbol *
+ihex_make_empty_symbol (abfd)
+ bfd *abfd;
+{
+ asymbol *new;
+
+ new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+ if (new != NULL)
+ new->the_bfd = abfd;
+ return new;
+}
+
+/* Set the architecture for the output file. The architecture is
+ irrelevant, so we ignore errors about unknown architectures. */
+
+static boolean
+ihex_set_arch_mach (abfd, arch, mach)
+ bfd *abfd;
+ enum bfd_architecture arch;
+ unsigned long mach;
+{
+ if (! bfd_default_set_arch_mach (abfd, arch, mach))
+ {
+ if (arch != bfd_arch_unknown)
+ return false;
+ }
+ return true;
+}
+
+/* Get the size of the headers, for the linker. */
+
+/*ARGSUSED*/
+static int
+ihex_sizeof_headers (abfd, exec)
+ bfd *abfd;
+ boolean exec;
+{
+ return 0;
+}
+
+/* Some random definitions for the target vector. */
+
+#define ihex_close_and_cleanup _bfd_generic_close_and_cleanup
+#define ihex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+#define ihex_new_section_hook _bfd_generic_new_section_hook
+#define ihex_get_section_contents_in_window \
+ _bfd_generic_get_section_contents_in_window
+
+#define ihex_get_symtab_upper_bound bfd_0l
+#define ihex_get_symtab \
+ ((long (*) PARAMS ((bfd *, asymbol **))) bfd_0l)
+#define ihex_print_symbol _bfd_nosymbols_print_symbol
+#define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info
+#define ihex_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
+#define ihex_get_lineno _bfd_nosymbols_get_lineno
+#define ihex_find_nearest_line _bfd_nosymbols_find_nearest_line
+#define ihex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define ihex_read_minisymbols _bfd_nosymbols_read_minisymbols
+#define ihex_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
+
+#define ihex_get_reloc_upper_bound \
+ ((long (*) PARAMS ((bfd *, asection *))) bfd_0l)
+#define ihex_canonicalize_reloc \
+ ((long (*) PARAMS ((bfd *, asection *, arelent **, asymbol **))) bfd_0l)
+#define ihex_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+
+#define ihex_bfd_get_relocated_section_contents \
+ bfd_generic_get_relocated_section_contents
+#define ihex_bfd_relax_section bfd_generic_relax_section
+#define ihex_bfd_gc_sections bfd_generic_gc_sections
+#define ihex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define ihex_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define ihex_bfd_final_link _bfd_generic_final_link
+#define ihex_bfd_link_split_section _bfd_generic_link_split_section
+
+/* The Intel Hex target vector. */
+
+const bfd_target ihex_vec =
+{
+ "ihex", /* name */
+ bfd_target_ihex_flavour,
+ BFD_ENDIAN_UNKNOWN, /* target byte order */
+ BFD_ENDIAN_UNKNOWN, /* target headers byte order */
+ 0, /* object flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD), /* section flags */
+ 0, /* leading underscore */
+ ' ', /* ar_pad_char */
+ 16, /* ar_max_namelen */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
+
+ {
+ _bfd_dummy_target,
+ ihex_object_p, /* bfd_check_format */
+ _bfd_dummy_target,
+ _bfd_dummy_target,
+ },
+ {
+ bfd_false,
+ ihex_mkobject,
+ _bfd_generic_mkarchive,
+ bfd_false,
+ },
+ { /* bfd_write_contents */
+ bfd_false,
+ ihex_write_object_contents,
+ _bfd_write_archive_contents,
+ bfd_false,
+ },
+
+ BFD_JUMP_TABLE_GENERIC (ihex),
+ BFD_JUMP_TABLE_COPY (_bfd_generic),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
+ BFD_JUMP_TABLE_SYMBOLS (ihex),
+ BFD_JUMP_TABLE_RELOCS (ihex),
+ BFD_JUMP_TABLE_WRITE (ihex),
+ BFD_JUMP_TABLE_LINK (ihex),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) 0
+};