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1000 lines
25 KiB
1000 lines
25 KiB
/* BFD back-end for Intel Hex objects. |
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Copyright (C) 1995-2014 Free Software Foundation, Inc. |
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Written by Ian Lance Taylor of Cygnus Support <ian@cygnus.com>. |
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This file is part of BFD, the Binary File Descriptor library. |
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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 3 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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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 Street - Fifth Floor, Boston, |
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MA 02110-1301, USA. */ |
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/* This is what Intel Hex files look like: |
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1. INTEL FORMATS |
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A. Intel 1 |
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16-bit address-field format, for files 64k bytes in length or less. |
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DATA RECORD |
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Byte 1 Header = colon(:) |
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2..3 The number of data bytes in hex notation |
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4..5 High byte of the record load address |
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6..7 Low byte of the record load address |
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8..9 Record type, must be "00" |
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10..x Data bytes in hex notation: |
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x = (number of bytes - 1) * 2 + 11 |
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x+1..x+2 Checksum in hex notation |
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x+3..x+4 Carriage return, line feed |
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END RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count, must be "00" |
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4..7 Transfer-address (usually "0000") |
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the jump-to address, execution start address |
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8..9 Record type, must be "01" |
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10..11 Checksum, in hex notation |
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12..13 Carriage return, line feed |
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B. INTEL 2 |
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MCS-86 format, using a 20-bit address for files larger than 64K bytes. |
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DATA RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count of this record, hex notation |
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4..5 High byte of the record load address |
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6..7 Low byte of the record load address |
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8..9 Record type, must be "00" |
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10..x The data bytes in hex notation: |
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x = (number of data bytes - 1) * 2 + 11 |
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x+1..x+2 Checksum in hex notation |
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x+3..x+4 Carriage return, line feed |
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EXTENDED ADDRESS RECORD |
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Byte 1 Header = colon(:) |
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2..3 The byte count, must be "02" |
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4..7 Load address, must be "0000" |
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8..9 Record type, must be "02" |
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10..11 High byte of the offset address |
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12..13 Low byte of the offset address |
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14..15 Checksum in hex notation |
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16..17 Carriage return, line feed |
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|
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The checksums are the two's complement of the 8-bit sum |
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without carry of the byte count, offset address, and the |
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record type. |
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START ADDRESS RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count, must be "04" |
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4..7 Load address, must be "0000" |
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8..9 Record type, must be "03" |
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10..13 8086 CS value |
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14..17 8086 IP value |
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18..19 Checksum in hex notation |
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20..21 Carriage return, line feed |
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|
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Another document reports these additional types: |
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EXTENDED LINEAR ADDRESS RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count, must be "02" |
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4..7 Load address, must be "0000" |
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8..9 Record type, must be "04" |
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10..13 Upper 16 bits of address of subsequent records |
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14..15 Checksum in hex notation |
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16..17 Carriage return, line feed |
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START LINEAR ADDRESS RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count, must be "02" |
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4..7 Load address, must be "0000" |
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8..9 Record type, must be "05" |
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10..13 Upper 16 bits of start address |
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14..15 Checksum in hex notation |
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16..17 Carriage return, line feed |
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The MRI compiler uses this, which is a repeat of type 5: |
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EXTENDED START RECORD |
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Byte 1 Header = colon (:) |
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2..3 The byte count, must be "04" |
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4..7 Load address, must be "0000" |
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8..9 Record type, must be "05" |
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10..13 Upper 16 bits of start address |
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14..17 Lower 16 bits of start address |
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18..19 Checksum in hex notation |
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20..21 Carriage return, line feed. */ |
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#include "sysdep.h" |
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#include "bfd.h" |
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#include "libbfd.h" |
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#include "libiberty.h" |
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#include "safe-ctype.h" |
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/* The number of bytes we put on one line during output. */ |
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#define CHUNK 16 |
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/* Macros for converting between hex and binary. */ |
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#define NIBBLE(x) (hex_value (x)) |
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#define HEX2(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) |
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#define HEX4(buffer) ((HEX2 (buffer) << 8) + HEX2 ((buffer) + 2)) |
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#define ISHEX(x) (hex_p (x)) |
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/* When we write out an ihex value, the values can not be output as |
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they are seen. Instead, we hold them in memory in this structure. */ |
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struct ihex_data_list |
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{ |
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struct ihex_data_list *next; |
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bfd_byte *data; |
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bfd_vma where; |
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bfd_size_type size; |
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}; |
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/* The ihex tdata information. */ |
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struct ihex_data_struct |
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{ |
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struct ihex_data_list *head; |
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struct ihex_data_list *tail; |
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}; |
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/* Initialize by filling in the hex conversion array. */ |
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static void |
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ihex_init (void) |
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{ |
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static bfd_boolean inited; |
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if (! inited) |
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{ |
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inited = TRUE; |
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hex_init (); |
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} |
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} |
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/* Create an ihex object. */ |
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static bfd_boolean |
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ihex_mkobject (bfd *abfd) |
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{ |
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struct ihex_data_struct *tdata; |
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tdata = (struct ihex_data_struct *) bfd_alloc (abfd, sizeof (* tdata)); |
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if (tdata == NULL) |
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return FALSE; |
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abfd->tdata.ihex_data = tdata; |
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tdata->head = NULL; |
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tdata->tail = NULL; |
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return TRUE; |
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} |
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/* Read a byte from a BFD. Set *ERRORPTR if an error occurred. |
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Return EOF on error or end of file. */ |
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static INLINE int |
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ihex_get_byte (bfd *abfd, bfd_boolean *errorptr) |
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{ |
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bfd_byte c; |
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if (bfd_bread (&c, (bfd_size_type) 1, abfd) != 1) |
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{ |
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if (bfd_get_error () != bfd_error_file_truncated) |
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*errorptr = TRUE; |
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return EOF; |
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} |
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return (int) (c & 0xff); |
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} |
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/* Report a problem in an Intel Hex file. */ |
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static void |
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ihex_bad_byte (bfd *abfd, unsigned int lineno, int c, bfd_boolean error) |
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{ |
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if (c == EOF) |
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{ |
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if (! error) |
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bfd_set_error (bfd_error_file_truncated); |
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} |
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else |
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{ |
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char buf[10]; |
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|
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if (! ISPRINT (c)) |
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sprintf (buf, "\\%03o", (unsigned int) c); |
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else |
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{ |
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buf[0] = c; |
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buf[1] = '\0'; |
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} |
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(*_bfd_error_handler) |
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(_("%B:%d: unexpected character `%s' in Intel Hex file"), |
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abfd, lineno, buf); |
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bfd_set_error (bfd_error_bad_value); |
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} |
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} |
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/* Read an Intel hex file and turn it into sections. We create a new |
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section for each contiguous set of bytes. */ |
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static bfd_boolean |
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ihex_scan (bfd *abfd) |
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{ |
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bfd_vma segbase; |
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bfd_vma extbase; |
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asection *sec; |
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unsigned int lineno; |
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bfd_boolean error; |
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bfd_byte *buf = NULL; |
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size_t bufsize; |
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int c; |
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
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goto error_return; |
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abfd->start_address = 0; |
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segbase = 0; |
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extbase = 0; |
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sec = NULL; |
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lineno = 1; |
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error = FALSE; |
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bufsize = 0; |
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while ((c = ihex_get_byte (abfd, &error)) != EOF) |
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{ |
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if (c == '\r') |
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continue; |
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else if (c == '\n') |
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{ |
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++lineno; |
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continue; |
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} |
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else if (c != ':') |
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{ |
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ihex_bad_byte (abfd, lineno, c, error); |
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goto error_return; |
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} |
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else |
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{ |
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file_ptr pos; |
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char hdr[8]; |
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unsigned int i; |
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unsigned int len; |
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bfd_vma addr; |
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unsigned int type; |
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unsigned int chars; |
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unsigned int chksum; |
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/* This is a data record. */ |
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pos = bfd_tell (abfd) - 1; |
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/* Read the header bytes. */ |
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if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
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goto error_return; |
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for (i = 0; i < 8; i++) |
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{ |
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if (! ISHEX (hdr[i])) |
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{ |
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ihex_bad_byte (abfd, lineno, hdr[i], error); |
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goto error_return; |
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} |
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} |
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len = HEX2 (hdr); |
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addr = HEX4 (hdr + 2); |
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type = HEX2 (hdr + 6); |
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/* Read the data bytes. */ |
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chars = len * 2 + 2; |
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if (chars >= bufsize) |
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{ |
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buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) chars); |
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if (buf == NULL) |
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goto error_return; |
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bufsize = chars; |
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} |
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if (bfd_bread (buf, (bfd_size_type) chars, abfd) != chars) |
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goto error_return; |
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for (i = 0; i < chars; i++) |
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{ |
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if (! ISHEX (buf[i])) |
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{ |
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ihex_bad_byte (abfd, lineno, buf[i], error); |
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goto error_return; |
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} |
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} |
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/* Check the checksum. */ |
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chksum = len + addr + (addr >> 8) + type; |
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for (i = 0; i < len; i++) |
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chksum += HEX2 (buf + 2 * i); |
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if (((- chksum) & 0xff) != (unsigned int) HEX2 (buf + 2 * i)) |
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{ |
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(*_bfd_error_handler) |
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(_("%B:%u: bad checksum in Intel Hex file (expected %u, found %u)"), |
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abfd, lineno, |
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(- chksum) & 0xff, (unsigned int) HEX2 (buf + 2 * i)); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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switch (type) |
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{ |
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case 0: |
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/* This is a data record. */ |
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if (sec != NULL |
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&& sec->vma + sec->size == extbase + segbase + addr) |
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{ |
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/* This data goes at the end of the section we are |
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currently building. */ |
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sec->size += len; |
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} |
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else if (len > 0) |
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{ |
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char secbuf[20]; |
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char *secname; |
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bfd_size_type amt; |
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flagword flags; |
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sprintf (secbuf, ".sec%d", bfd_count_sections (abfd) + 1); |
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amt = strlen (secbuf) + 1; |
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secname = (char *) bfd_alloc (abfd, amt); |
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if (secname == NULL) |
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goto error_return; |
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strcpy (secname, secbuf); |
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flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; |
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sec = bfd_make_section_with_flags (abfd, secname, flags); |
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if (sec == NULL) |
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goto error_return; |
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sec->vma = extbase + segbase + addr; |
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sec->lma = extbase + segbase + addr; |
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sec->size = len; |
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sec->filepos = pos; |
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} |
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break; |
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|
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case 1: |
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/* An end record. */ |
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if (abfd->start_address == 0) |
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abfd->start_address = addr; |
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if (buf != NULL) |
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free (buf); |
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return TRUE; |
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|
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case 2: |
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/* An extended address record. */ |
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if (len != 2) |
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{ |
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(*_bfd_error_handler) |
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(_("%B:%u: bad extended address record length in Intel Hex file"), |
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abfd, lineno); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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segbase = HEX4 (buf) << 4; |
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sec = NULL; |
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|
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break; |
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|
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case 3: |
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/* An extended start address record. */ |
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if (len != 4) |
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{ |
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(*_bfd_error_handler) |
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(_("%B:%u: bad extended start address length in Intel Hex file"), |
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abfd, lineno); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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abfd->start_address += (HEX4 (buf) << 4) + HEX4 (buf + 4); |
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sec = NULL; |
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break; |
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case 4: |
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/* An extended linear address record. */ |
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if (len != 2) |
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{ |
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(*_bfd_error_handler) |
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(_("%B:%u: bad extended linear address record length in Intel Hex file"), |
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abfd, lineno); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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|
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extbase = HEX4 (buf) << 16; |
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|
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sec = NULL; |
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|
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break; |
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|
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case 5: |
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/* An extended linear start address record. */ |
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if (len != 2 && len != 4) |
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{ |
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(*_bfd_error_handler) |
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(_("%B:%u: bad extended linear start address length in Intel Hex file"), |
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abfd, lineno); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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|
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if (len == 2) |
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abfd->start_address += HEX4 (buf) << 16; |
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else |
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abfd->start_address = (HEX4 (buf) << 16) + HEX4 (buf + 4); |
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|
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sec = NULL; |
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|
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break; |
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|
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default: |
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(*_bfd_error_handler) |
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(_("%B:%u: unrecognized ihex type %u in Intel Hex file"), |
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abfd, lineno, type); |
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bfd_set_error (bfd_error_bad_value); |
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goto error_return; |
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} |
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} |
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} |
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|
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if (error) |
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goto error_return; |
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|
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if (buf != NULL) |
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free (buf); |
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|
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return TRUE; |
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|
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error_return: |
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if (buf != NULL) |
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free (buf); |
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return FALSE; |
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} |
|
|
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/* Try to recognize an Intel Hex file. */ |
|
|
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static const bfd_target * |
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ihex_object_p (bfd *abfd) |
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{ |
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void * tdata_save; |
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bfd_byte b[9]; |
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unsigned int i; |
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unsigned int type; |
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|
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ihex_init (); |
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|
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if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
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return NULL; |
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if (bfd_bread (b, (bfd_size_type) 9, abfd) != 9) |
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{ |
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if (bfd_get_error () == bfd_error_file_truncated) |
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bfd_set_error (bfd_error_wrong_format); |
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return NULL; |
|
} |
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|
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if (b[0] != ':') |
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{ |
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bfd_set_error (bfd_error_wrong_format); |
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return NULL; |
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} |
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|
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for (i = 1; i < 9; i++) |
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{ |
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if (! ISHEX (b[i])) |
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{ |
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bfd_set_error (bfd_error_wrong_format); |
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return NULL; |
|
} |
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} |
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|
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type = HEX2 (b + 7); |
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if (type > 5) |
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{ |
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bfd_set_error (bfd_error_wrong_format); |
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return NULL; |
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} |
|
|
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/* OK, it looks like it really is an Intel Hex file. */ |
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tdata_save = abfd->tdata.any; |
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if (! ihex_mkobject (abfd) || ! ihex_scan (abfd)) |
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{ |
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if (abfd->tdata.any != tdata_save && abfd->tdata.any != NULL) |
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bfd_release (abfd, abfd->tdata.any); |
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abfd->tdata.any = tdata_save; |
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return NULL; |
|
} |
|
|
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return abfd->xvec; |
|
} |
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|
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/* Read the contents of a section in an Intel Hex file. */ |
|
|
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static bfd_boolean |
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ihex_read_section (bfd *abfd, asection *section, bfd_byte *contents) |
|
{ |
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int c; |
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bfd_byte *p; |
|
bfd_byte *buf = NULL; |
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size_t bufsize; |
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bfd_boolean error; |
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|
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if (bfd_seek (abfd, section->filepos, SEEK_SET) != 0) |
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goto error_return; |
|
|
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p = contents; |
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bufsize = 0; |
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error = FALSE; |
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while ((c = ihex_get_byte (abfd, &error)) != EOF) |
|
{ |
|
char hdr[8]; |
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unsigned int len; |
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unsigned int type; |
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unsigned int i; |
|
|
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if (c == '\r' || c == '\n') |
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continue; |
|
|
|
/* This is called after ihex_scan has succeeded, so we ought to |
|
know the exact format. */ |
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BFD_ASSERT (c == ':'); |
|
|
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if (bfd_bread (hdr, (bfd_size_type) 8, abfd) != 8) |
|
goto error_return; |
|
|
|
len = HEX2 (hdr); |
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type = HEX2 (hdr + 6); |
|
|
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/* We should only see type 0 records here. */ |
|
if (type != 0) |
|
{ |
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(*_bfd_error_handler) |
|
(_("%B: internal error in ihex_read_section"), abfd); |
|
bfd_set_error (bfd_error_bad_value); |
|
goto error_return; |
|
} |
|
|
|
if (len * 2 > bufsize) |
|
{ |
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buf = (bfd_byte *) bfd_realloc (buf, (bfd_size_type) len * 2); |
|
if (buf == NULL) |
|
goto error_return; |
|
bufsize = len * 2; |
|
} |
|
|
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if (bfd_bread (buf, (bfd_size_type) len * 2, abfd) != len * 2) |
|
goto error_return; |
|
|
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for (i = 0; i < len; i++) |
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*p++ = HEX2 (buf + 2 * i); |
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if ((bfd_size_type) (p - contents) >= section->size) |
|
{ |
|
/* We've read everything in the section. */ |
|
if (buf != NULL) |
|
free (buf); |
|
return TRUE; |
|
} |
|
|
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/* Skip the checksum. */ |
|
if (bfd_bread (buf, (bfd_size_type) 2, abfd) != 2) |
|
goto error_return; |
|
} |
|
|
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if ((bfd_size_type) (p - contents) < section->size) |
|
{ |
|
(*_bfd_error_handler) |
|
(_("%B: bad section length in ihex_read_section"), 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 bfd_boolean |
|
ihex_get_section_contents (bfd *abfd, |
|
asection *section, |
|
void * location, |
|
file_ptr offset, |
|
bfd_size_type count) |
|
{ |
|
if (section->used_by_bfd == NULL) |
|
{ |
|
section->used_by_bfd = bfd_alloc (abfd, section->size); |
|
if (section->used_by_bfd == NULL) |
|
return FALSE; |
|
if (! ihex_read_section (abfd, section, |
|
(bfd_byte *) 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 bfd_boolean |
|
ihex_set_section_contents (bfd *abfd, |
|
asection *section, |
|
const void * 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 (* n)); |
|
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 |
|
{ |
|
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 bfd_boolean |
|
ihex_write_record (bfd *abfd, |
|
size_t count, |
|
unsigned int 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; |
|
size_t total; |
|
|
|
#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'; |
|
|
|
total = 9 + count * 2 + 4; |
|
if (bfd_bwrite (buf, (bfd_size_type) total, abfd) != total) |
|
return FALSE; |
|
|
|
return TRUE; |
|
} |
|
|
|
/* Write out an Intel Hex file. */ |
|
|
|
static bfd_boolean |
|
ihex_write_object_contents (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) |
|
{ |
|
size_t now; |
|
unsigned int rec_addr; |
|
|
|
now = count; |
|
if (count > 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 Intel 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; |
|
} |
|
} |
|
|
|
rec_addr = where - (extbase + segbase); |
|
|
|
/* Output records shouldn't cross 64K boundaries. */ |
|
if (rec_addr + now > 0xffff) |
|
now = 0x10000 - rec_addr; |
|
|
|
if (! ihex_write_record (abfd, now, rec_addr, 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; |
|
} |
|
|
|
/* Set the architecture for the output file. The architecture is |
|
irrelevant, so we ignore errors about unknown architectures. */ |
|
|
|
static bfd_boolean |
|
ihex_set_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. */ |
|
|
|
static int |
|
ihex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, |
|
struct bfd_link_info *info ATTRIBUTE_UNUSED) |
|
{ |
|
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_canonicalize_symtab ((long (*) (bfd *, asymbol **)) bfd_0l) |
|
#define ihex_make_empty_symbol _bfd_generic_make_empty_symbol |
|
#define ihex_print_symbol _bfd_nosymbols_print_symbol |
|
#define ihex_get_symbol_info _bfd_nosymbols_get_symbol_info |
|
#define ihex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
|
#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_find_line _bfd_nosymbols_find_line |
|
#define ihex_find_inliner_info _bfd_nosymbols_find_inliner_info |
|
#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_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_lookup_section_flags bfd_generic_lookup_section_flags |
|
#define ihex_bfd_merge_sections bfd_generic_merge_sections |
|
#define ihex_bfd_is_group_section bfd_generic_is_group_section |
|
#define ihex_bfd_discard_group bfd_generic_discard_group |
|
#define ihex_section_already_linked _bfd_generic_section_already_linked |
|
#define ihex_bfd_define_common_symbol bfd_generic_define_common_symbol |
|
#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_link_just_syms _bfd_generic_link_just_syms |
|
#define ihex_bfd_copy_link_hash_symbol_type \ |
|
_bfd_generic_copy_link_hash_symbol_type |
|
#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. */ |
|
0, /* match priority. */ |
|
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, /* Headers. */ |
|
|
|
{ |
|
_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 (_bfd_norelocs), |
|
BFD_JUMP_TABLE_WRITE (ihex), |
|
BFD_JUMP_TABLE_LINK (ihex), |
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
|
|
|
NULL, |
|
|
|
NULL |
|
};
|
|
|