1991-03-22 05:11:25 +08:00
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/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Diddler.
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BFD 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 1, or (at your option)
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any later version.
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BFD 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 BFD; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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bfd backend for srecord objects.
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Srecords cannot hold anything but addresses and data, so that's all
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that we impliment.
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The only interesting thing is that srecords may come out of order and
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there is no header, so an initial scan is required to discover the
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minimum and maximum addresses used to create the vma and size of the
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only section we create. We arbitarily call this section ".text".
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When bfd_get_section_contents is called the file is read again, and
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1991-05-11 09:38:47 +09:00
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this time the data is placed into a bfd_alloc'd area.
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1991-03-22 05:11:25 +08:00
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Any number of sections may be created for output, we just output them
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in the order provided to bfd_set_section_contents.
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Steve Chamberlain steve@cygnus.com
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*/
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1991-05-21 09:14:16 +09:00
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#include <sysdep.h>
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1991-04-04 06:10:51 +08:00
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#include "bfd.h"
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1991-03-22 05:11:25 +08:00
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#include "libbfd.h"
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static char digs[] = "0123456789ABCDEF";
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/* Macros for converting between hex and binary */
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#define NIBBLE(x) ((x >= '0' && x <= '9') ? (x - '0') : (x - 'A' + 10))
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#define HEX(buffer) ((NIBBLE((buffer)->high) <<4) + NIBBLE((buffer)->low))
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#define TOHEX(d,x) \
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((d)->low = digs[(x) & 0xf], (d)->high = digs[((x)>>4)&0xf], x)
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typedef struct {
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char high;
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char low;
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} byte_as_two_char_type;
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/* The maximum number of bytes on a line is FF */
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#define MAXCHUNK 0xff
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/* The number of bytes we fit onto a line on output */
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#define CHUNK 16
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/* The shape of an srecord .. */
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typedef struct
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{
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char S;
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char type;
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byte_as_two_char_type size;
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union {
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struct {
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byte_as_two_char_type address[4];
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byte_as_two_char_type data[MAXCHUNK];
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/* If there isn't MAXCHUNK bytes of data then the checksum will
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appear earlier */
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byte_as_two_char_type checksum;
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char nl;
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} type_3;
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struct {
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byte_as_two_char_type address[4];
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byte_as_two_char_type data[MAXCHUNK];
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byte_as_two_char_type checksum;
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char nl;
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} type_6;
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struct {
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byte_as_two_char_type address[3];
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byte_as_two_char_type data[MAXCHUNK];
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byte_as_two_char_type checksum;
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char nl;
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} type_2;
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struct {
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byte_as_two_char_type address[2];
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byte_as_two_char_type data[MAXCHUNK];
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byte_as_two_char_type checksum;
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char nl;
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} type_1;
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byte_as_two_char_type data[MAXCHUNK];
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} u;
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} srec_type;
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1991-06-07 10:32:45 +09:00
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#define enda(x) (x->vma + x->size)
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1991-03-22 05:11:25 +08:00
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/*
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called once per input srecord, used to work out vma and size of data.
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*/
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1991-06-07 10:32:45 +09:00
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static bfd_vma low,high;
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1991-03-22 05:11:25 +08:00
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static void
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size_srec(abfd, section, address, raw, length)
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bfd *abfd;
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asection *section;
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bfd_vma address;
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byte_as_two_char_type *raw;
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unsigned int length;
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{
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1991-06-07 10:32:45 +09:00
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if (address < low)
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low = address;
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if (address + length > high)
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high = address + length;
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1991-03-22 05:11:25 +08:00
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}
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1991-06-07 10:32:45 +09:00
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1991-03-22 05:11:25 +08:00
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/*
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1991-05-11 09:38:47 +09:00
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called once per input srecord, copies data from input into bfd_alloc'd area
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1991-03-22 05:11:25 +08:00
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*/
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static void
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fillup(abfd, section, address, raw, length)
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bfd *abfd;
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asection *section;
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bfd_vma address;
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byte_as_two_char_type *raw;
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unsigned int length;
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{
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unsigned int i;
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bfd_byte *dst = (bfd_byte *)(section->used_by_bfd) + address - section->vma;
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for (i = 0; i < length; i++) {
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*dst = HEX(raw);
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dst++;
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raw++;
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}
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}
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/*
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pass over an srecord file calling one of the above functions on each
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record
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*/
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static void
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pass_over(abfd, func, section)
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bfd *abfd;
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void (*func)();
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asection *section;
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{
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unsigned int bytes_on_line;
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boolean eof = false;
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bfd_vma address;
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/* To the front of the file */
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bfd_seek(abfd, (file_ptr)0, SEEK_SET);
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while (eof == false)
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{
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srec_type buffer;
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/* Find first 'S' */
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eof = bfd_read(&buffer.S, 1, 1, abfd) != 1;
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while (buffer.S != 'S' && !eof) {
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eof = bfd_read(&buffer.S, 1, 1, abfd) != 1;
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}
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if (eof) break;
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bfd_read(&buffer.type, 1, 3, abfd);
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bytes_on_line = HEX(&buffer.size);
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1991-05-09 04:21:48 +09:00
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bfd_read((PTR)buffer.u.data, 1 , bytes_on_line * 2, abfd);
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1991-03-22 05:11:25 +08:00
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switch (buffer.type) {
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case '6':
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/* Prologue - ignore */
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break;
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case '3':
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address = (HEX(buffer.u.type_3.address+0) << 24)
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+ (HEX(buffer.u.type_3.address+1) << 16)
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+ (HEX(buffer.u.type_3.address+2) << 8)
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+ (HEX(buffer.u.type_3.address+3));
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1991-07-05 01:52:56 +09:00
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func(abfd,section, address, buffer.u.type_3.data, bytes_on_line -1);
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1991-03-22 05:11:25 +08:00
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break;
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case '2':
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address = (HEX(buffer.u.type_2.address+0) << 16)+
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(HEX(buffer.u.type_2.address+1) << 8) +
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(HEX(buffer.u.type_2.address+2));
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func(abfd,section, address, buffer.u.type_2.data, bytes_on_line -1);
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break;
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case '1':
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address =
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(HEX(buffer.u.type_1.address+0) << 8)
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+ (HEX(buffer.u.type_1.address+1));
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func(abfd, section, address, buffer.u.type_1.data, bytes_on_line -1);
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break;
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}
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}
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}
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bfd_target *
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srec_object_p (abfd)
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bfd *abfd;
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{
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char b;
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asection *section;
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bfd_seek(abfd, (file_ptr)0, SEEK_SET);
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bfd_read(&b, 1,1,abfd);
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if (b != 'S') return (bfd_target*)NULL;
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/*
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We create one section called data for all the contents,
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and allocate enough room for the entire file
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*/
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section = bfd_make_section(abfd, ".text");
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section->size = 0;
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section->vma = 0xffffffff;
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1991-06-07 10:32:45 +09:00
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low = 0xffffffff;
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high = 0;
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1991-03-22 05:11:25 +08:00
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pass_over(abfd, size_srec, section);
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1991-06-07 10:32:45 +09:00
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section->size = high - low;
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section->vma = low;
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1991-03-22 05:11:25 +08:00
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return abfd->xvec;
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}
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static boolean
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srec_get_section_contents (abfd, section, location, offset, count)
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bfd *abfd;
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sec_ptr section;
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void *location;
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file_ptr offset;
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unsigned int count;
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{
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1991-04-25 13:06:21 +09:00
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if (section->used_by_bfd == (PTR)NULL) {
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1991-05-11 09:38:47 +09:00
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section->used_by_bfd = (PTR)bfd_alloc (abfd, section->size);
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1991-03-22 05:11:25 +08:00
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pass_over(abfd, fillup, section);
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}
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(void) memcpy(location, (bfd_byte *)(section->used_by_bfd) + offset, count);
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return true;
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}
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boolean
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srec_set_arch_mach (abfd, arch, machine)
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bfd *abfd;
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enum bfd_architecture arch;
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unsigned long machine;
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{
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abfd->obj_arch = arch;
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abfd->obj_machine = machine;
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return true;
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}
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boolean
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srec_set_section_contents (abfd, section, location, offset, bytes_to_do)
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bfd *abfd;
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sec_ptr section;
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unsigned char *location;
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file_ptr offset;
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int bytes_to_do;
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{
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bfd_vma address;
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int bytes_written;
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int type;
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unsigned int i;
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srec_type buffer;
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bytes_written = 0;
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1991-06-07 10:32:45 +09:00
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if (section->vma <= 0xffff)
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1991-03-22 05:11:25 +08:00
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type = 1;
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1991-06-07 10:32:45 +09:00
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else if (section->vma <= 0xffffff)
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1991-03-22 05:11:25 +08:00
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type = 2;
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else
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type = 3;
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buffer.S = 'S';
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buffer.type = '0' + type;
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while (bytes_written < bytes_to_do) {
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unsigned int size;
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unsigned int check_sum;
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byte_as_two_char_type *data;
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1991-04-04 06:10:51 +08:00
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unsigned int bytes_this_chunk = bytes_to_do - bytes_written;
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1991-03-22 05:11:25 +08:00
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if (bytes_this_chunk > CHUNK) {
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bytes_this_chunk = CHUNK;
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}
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address = section->vma + offset + bytes_written;
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switch (type) {
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case 3:
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check_sum = TOHEX(buffer.u.type_3.address, address >> 24);
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check_sum += TOHEX(buffer.u.type_3.address+1, address >> 16);
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check_sum += TOHEX(buffer.u.type_3.address+2, address >> 8);
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check_sum += TOHEX(buffer.u.type_3.address+3, address >> 0);
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size = bytes_this_chunk + 5;
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data = buffer.u.type_3.data;
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1991-07-05 01:52:56 +09:00
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break;
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1991-03-22 05:11:25 +08:00
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case 2:
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check_sum = TOHEX(buffer.u.type_3.address, address >> 16);
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check_sum += TOHEX(buffer.u.type_3.address+1, address >> 8);
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check_sum += TOHEX(buffer.u.type_3.address+2, address >> 0);
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size = bytes_this_chunk + 4;
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data = buffer.u.type_2.data;
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break;
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case 1:
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check_sum = TOHEX(buffer.u.type_3.address+0, address >> 8);
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check_sum += TOHEX(buffer.u.type_3.address+1, address >> 0);
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size = bytes_this_chunk + 3;
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data = buffer.u.type_1.data;
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1991-07-05 01:52:56 +09:00
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break;
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1991-03-22 05:11:25 +08:00
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}
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for (i = 0; i < bytes_this_chunk; i++) {
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check_sum += TOHEX(data, (location[i]));
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data++;
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}
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check_sum += TOHEX(&(buffer.size), size );
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(void) TOHEX(data, ~check_sum);
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data++;
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* ( (char *)(data)) = '\n';
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1991-05-09 04:21:48 +09:00
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bfd_write((PTR)&buffer, 1, (char *)data - (char *)&buffer + 1 , abfd);
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1991-03-22 05:11:25 +08:00
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bytes_written += bytes_this_chunk;
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location += bytes_this_chunk;
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}
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return true;
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}
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boolean
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1991-05-11 09:38:47 +09:00
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srec_write_object_contents (abfd)
|
|
|
|
bfd *abfd;
|
1991-03-22 05:11:25 +08:00
|
|
|
{
|
1991-05-11 09:38:47 +09:00
|
|
|
bfd_write("S9030000FC\n", 1,11,abfd);
|
1991-05-21 09:14:16 +09:00
|
|
|
return true;
|
1991-03-22 05:11:25 +08:00
|
|
|
}
|
|
|
|
|
1991-04-24 07:44:20 +09:00
|
|
|
static int
|
1991-05-21 09:14:16 +09:00
|
|
|
DEFUN(srec_sizeof_headers,(abfd, exec),
|
|
|
|
bfd *abfd AND
|
|
|
|
boolean exec)
|
1991-04-24 07:44:20 +09:00
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
1991-06-07 10:32:45 +09:00
|
|
|
static asymbol *
|
|
|
|
DEFUN(srec_make_empty_symbol, (abfd),
|
|
|
|
bfd*abfd)
|
|
|
|
{
|
|
|
|
asymbol *new= (asymbol *)bfd_zalloc (abfd, sizeof (asymbol));
|
|
|
|
new->the_bfd = abfd;
|
|
|
|
return new;
|
|
|
|
}
|
1991-07-05 01:52:56 +09:00
|
|
|
#define FOO PROTO
|
|
|
|
#define srec_new_section_hook (FOO(boolean, (*), (bfd *, asection *)))bfd_true
|
1991-04-24 01:02:09 +09:00
|
|
|
#define srec_get_symtab_upper_bound bfd_false
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_get_symtab (FOO(unsigned int, (*), (bfd *, asymbol **)))bfd_0
|
|
|
|
#define srec_get_reloc_upper_bound (FOO(unsigned int, (*),(bfd*, asection *)))bfd_false
|
|
|
|
#define srec_canonicalize_reloc (FOO(unsigned int, (*),(bfd*,asection *, arelent **, asymbol **))) bfd_0
|
1991-06-07 10:32:45 +09:00
|
|
|
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_print_symbol (FOO(void,(*),(bfd *, PTR, asymbol *, bfd_print_symbol_enum_type))) bfd_void
|
1991-05-09 04:21:48 +09:00
|
|
|
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_openr_next_archived_file (FOO(bfd *, (*), (bfd*,bfd*))) bfd_nullvoidptr
|
|
|
|
#define srec_find_nearest_line (FOO(boolean, (*),(bfd*,asection*,asymbol**,bfd_vma, CONST char**, CONST char**, unsigned int *))) bfd_false
|
|
|
|
#define srec_generic_stat_arch_elt (FOO(int, (*), (bfd *,struct stat *))) bfd_0
|
1991-04-24 01:02:09 +09:00
|
|
|
|
1991-05-09 04:21:48 +09:00
|
|
|
|
|
|
|
#define srec_core_file_failing_command (char *(*)())(bfd_nullvoidptr)
|
|
|
|
#define srec_core_file_failing_signal (int (*)())bfd_0
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_core_file_matches_executable_p (FOO(boolean, (*),(bfd*, bfd*)))bfd_false
|
1991-05-09 04:21:48 +09:00
|
|
|
#define srec_slurp_armap bfd_true
|
|
|
|
#define srec_slurp_extended_name_table bfd_true
|
|
|
|
#define srec_truncate_arname (void (*)())bfd_nullvoidptr
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_write_armap (FOO( boolean, (*),(bfd *, unsigned int, struct orl *, int, int))) bfd_nullvoidptr
|
1991-05-09 04:21:48 +09:00
|
|
|
#define srec_get_lineno (struct lineno_cache_entry *(*)())bfd_nullvoidptr
|
1991-05-11 09:38:47 +09:00
|
|
|
#define srec_close_and_cleanup bfd_generic_close_and_cleanup
|
1991-07-05 01:52:56 +09:00
|
|
|
#define srec_bfd_debug_info_start bfd_void
|
|
|
|
#define srec_bfd_debug_info_end bfd_void
|
|
|
|
#define srec_bfd_debug_info_accumulate (FOO(void, (*), (bfd *, asection *))) bfd_void
|
1991-05-11 09:38:47 +09:00
|
|
|
|
1991-05-09 04:21:48 +09:00
|
|
|
|
1991-03-22 05:11:25 +08:00
|
|
|
bfd_target srec_vec =
|
|
|
|
{
|
|
|
|
"srec", /* name */
|
|
|
|
bfd_target_srec_flavour_enum,
|
|
|
|
true, /* target byte order */
|
|
|
|
true, /* target headers byte order */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
|
|
HAS_LINENO | HAS_DEBUG |
|
|
|
|
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
1991-04-24 01:02:09 +09:00
|
|
|
(SEC_CODE|SEC_DATA|SEC_ROM|SEC_HAS_CONTENTS
|
1991-03-22 05:11:25 +08:00
|
|
|
|SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
|
|
' ', /* ar_pad_char */
|
|
|
|
16, /* ar_max_namelen */
|
1991-07-05 01:52:56 +09:00
|
|
|
1, /* minimum alignment */
|
1991-05-21 09:14:16 +09:00
|
|
|
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
|
|
|
|
_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
|
|
|
|
|
|
|
|
{_bfd_dummy_target,
|
|
|
|
srec_object_p, /* bfd_check_format */
|
|
|
|
(struct bfd_target *(*)()) bfd_nullvoidptr,
|
|
|
|
(struct bfd_target *(*)()) bfd_nullvoidptr,
|
|
|
|
},
|
|
|
|
{
|
|
|
|
bfd_false,
|
|
|
|
bfd_true, /* mkobject */
|
|
|
|
_bfd_generic_mkarchive,
|
|
|
|
bfd_false,
|
|
|
|
},
|
|
|
|
{ /* bfd_write_contents */
|
|
|
|
bfd_false,
|
|
|
|
srec_write_object_contents,
|
|
|
|
_bfd_write_archive_contents,
|
|
|
|
bfd_false,
|
|
|
|
},
|
1991-05-11 09:38:47 +09:00
|
|
|
JUMP_TABLE(srec)
|
1991-05-21 09:14:16 +09:00
|
|
|
};
|