-/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+/* BFD backend for s-record objects.
+ Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Written by Steve Chamberlain of Cygnus Support <steve@cygnus.com>.
-This file is part of BFD, the Binary File Diddler.
+This file is part of BFD, the Binary File Descriptor library.
-BFD is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-BFD is distributed in the hope that it will be useful,
+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 BFD; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/*
-
- bfd backend for srecord objects.
-
- Srecords cannot hold anything but addresses and data, so that's all
- that we impliment.
-
- The only interesting thing is that srecords may come out of order and
- there is no header, so an initial scan is required to discover the
- minimum and maximum addresses used to create the vma and size of the
- only section we create. We arbitarily call this section ".text".
-
- When bfd_get_section_contents is called the file is read again, and
- this time the data is placed into a bfd_alloc'd area.
-
- Any number of sections may be created for output, we just output them
- in the order provided to bfd_set_section_contents.
-
-
- Steve Chamberlain steve@cygnus.com
-
- */
+/* S-records cannot hold anything but addresses and data, so that's all
+ that we implement.
+
+ The only interesting thing is that s-records may come out of order and
+ there is no header, so an initial scan is required to discover the
+ minimum and maximum addresses used to create the vma and size of the
+ only section we create. We arbitrarily call this section ".text".
+ When bfd_get_section_contents is called the file is read again, and
+ this time the data is placed into a bfd_alloc'd area.
+ Any number of sections may be created for output, we just output them
+ in the order provided to bfd_set_section_contents. */
#include <sysdep.h>
#include "bfd.h"
/* Macros for converting between hex and binary */
-#define NIBBLE(x) ((x >= '0' && x <= '9') ? (x - '0') : (x - 'A' + 10))
+#define NIBBLE(x) (((x) >= '0' && (x) <= '9') ? ((x) - '0') : ((x) - 'A' + 10))
#define HEX(buffer) ((NIBBLE((buffer)->high) <<4) + NIBBLE((buffer)->low))
#define TOHEX(d,x) \
- ((d)->low = digs[(x) & 0xf], (d)->high = digs[((x)>>4)&0xf], x)
+ ((d)->low = digs[(x) & 0xf], (d)->high = digs[((x)>>4)&0xf], (x))
+#define ISHEX(x) (((x) >= '0' && (x) <= '9') || ((x) >= 'A' && (x) <= 'F'))
typedef struct {
char high;
/* The number of bytes we fit onto a line on output */
#define CHUNK 16
-/* The shape of an srecord .. */
+/* The shape of an s-record .. */
typedef struct
{
char S;
#define enda(x) (x->vma + x->size)
/*
- called once per input srecord, used to work out vma and size of data.
+ called once per input s-record, used to work out vma and size of data.
*/
static bfd_vma low,high;
/*
- called once per input srecord, copies data from input into bfd_alloc'd area
+ called once per input s-record, copies data from input into bfd_alloc'd area
*/
static void
}
}
-/*
- pass over an srecord file calling one of the above functions on each
- record
- */
+/* Pass over an s-record file, calling one of the above functions on each
+ record. */
+
static void
pass_over(abfd, func, section)
-bfd *abfd;
-void (*func)();
-asection *section;
+ bfd *abfd;
+ void (*func)();
+ asection *section;
{
unsigned int bytes_on_line;
boolean eof = false;
bfd_read(&buffer.type, 1, 3, abfd);
+ if (!ISHEX (buffer.size.high) || !ISHEX (buffer.size.low))
+ break;
bytes_on_line = HEX(&buffer.size);
+ if (bytes_on_line > MAXCHUNK/2)
+ break;
bfd_read((PTR)buffer.u.data, 1 , bytes_on_line * 2, abfd);
case '6':
/* Prologue - ignore */
break;
+
case '3':
address = (HEX(buffer.u.type_3.address+0) << 24)
- + (HEX(buffer.u.type_3.address+1) << 16)
- + (HEX(buffer.u.type_3.address+2) << 8)
- + (HEX(buffer.u.type_3.address+3));
+ + (HEX(buffer.u.type_3.address+1) << 16)
+ + (HEX(buffer.u.type_3.address+2) << 8)
+ + (HEX(buffer.u.type_3.address+3));
func(abfd,section, address, buffer.u.type_3.data, bytes_on_line -1);
-
break;
case '2':
- address = (HEX(buffer.u.type_2.address+0) << 16)+
- (HEX(buffer.u.type_2.address+1) << 8) +
- (HEX(buffer.u.type_2.address+2));
+ address = (HEX(buffer.u.type_2.address+0) << 16)
+ + (HEX(buffer.u.type_2.address+1) << 8)
+ + (HEX(buffer.u.type_2.address+2));
func(abfd,section, address, buffer.u.type_2.data, bytes_on_line -1);
-
break;
+
case '1':
- address =
- (HEX(buffer.u.type_1.address+0) << 8)
- + (HEX(buffer.u.type_1.address+1));
+ address = (HEX(buffer.u.type_1.address+0) << 8)
+ + (HEX(buffer.u.type_1.address+1));
func(abfd, section, address, buffer.u.type_1.data, bytes_on_line -1);
break;
+ default:
+ goto end_of_file;
}
}
+ end_of_file: ;
}
srec_object_p (abfd)
bfd *abfd;
{
- char b;
+ char b[4];
asection *section;
bfd_seek(abfd, (file_ptr)0, SEEK_SET);
- bfd_read(&b, 1,1,abfd);
- if (b != 'S') return (bfd_target*)NULL;
-
- /*
- We create one section called data for all the contents,
- and allocate enough room for the entire file
- */
-
+ bfd_read(b, 1, 4, abfd);
+ if (b[0] != 'S' || !ISHEX(b[1]) || !ISHEX(b[2]) || !ISHEX(b[3]))
+ return (bfd_target*) NULL;
+
+ /* We create one section called .text for all the contents,
+ and allocate enough room for the entire file. */
section = bfd_make_section(abfd, ".text");
section->size = 0;
}
-
-
-
-
-
-
static boolean
srec_get_section_contents (abfd, section, location, offset, count)
bfd *abfd;
section->used_by_bfd = (PTR)bfd_alloc (abfd, section->size);
pass_over(abfd, fillup, section);
}
- (void) memcpy(location, (bfd_byte *)(section->used_by_bfd) + offset, count);
+ (void) memcpy((PTR)location, (PTR)((char *)(section->used_by_bfd) + offset), count);
return true;
}
}
#define FOO PROTO
#define srec_new_section_hook (FOO(boolean, (*), (bfd *, asection *)))bfd_true
-#define srec_get_symtab_upper_bound bfd_false
+#define srec_get_symtab_upper_bound (PROTO(unsigned int, (*),(bfd *)))bfd_false
#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
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