/* BFD back-end for Intel 386 COFF files (DJGPP variant with a stub).
- Copyright 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
Written by Robert Hoehne.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/* This file handles now also stubbed coff images. The stub is a small
DOS executable program before the coff image to load it in memory
To be compatible with any existing executables I have fixed this
here and NOT in the DJGPP startup code. */
-#define TARGET_SYM go32stubbedcoff_vec
+#define TARGET_SYM i386_coff_go32stubbed_vec
#define TARGET_NAME "coff-go32-exe"
#define TARGET_UNDERSCORE '_'
#define COFF_GO32_EXE
{ COFF_SECTION_NAME_PARTIAL_MATCH (".gnu.linkonce.wi"), \
COFF_ALIGNMENT_FIELD_EMPTY, COFF_ALIGNMENT_FIELD_EMPTY, 0 }
+#include "sysdep.h"
#include "bfd.h"
-/* At first the prototypes. */
+/* All that ..._PRE and ...POST functions are called from the corresponding
+ coff_swap... functions. The ...PRE functions are called at the beginning
+ of the function and the ...POST functions at the end of the swap routines. */
static void
-adjust_filehdr_in_post PARAMS ((bfd *, PTR, PTR));
+adjust_filehdr_in_post (bfd *, void *, void *);
static void
-adjust_filehdr_out_pre PARAMS ((bfd *, PTR, PTR));
+adjust_filehdr_out_pre (bfd *, void *, void *);
static void
-adjust_filehdr_out_post PARAMS ((bfd *, PTR, PTR));
+adjust_filehdr_out_post (bfd *, void *, void *);
static void
-adjust_scnhdr_in_post PARAMS ((bfd *, PTR, PTR));
+adjust_scnhdr_in_post (bfd *, void *, void *);
static void
-adjust_scnhdr_out_pre PARAMS ((bfd *, PTR, PTR));
+adjust_scnhdr_out_pre (bfd *, void *, void *);
static void
-adjust_scnhdr_out_post PARAMS ((bfd *, PTR, PTR));
+adjust_scnhdr_out_post (bfd *, void *, void *);
static void
-adjust_aux_in_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
+adjust_aux_in_post (bfd *, void *, int, int, int, int, void *);
static void
-adjust_aux_out_pre PARAMS ((bfd *, PTR, int, int, int, int, PTR));
+adjust_aux_out_pre (bfd *, void *, int, int, int, int, void *);
static void
-adjust_aux_out_post PARAMS ((bfd *, PTR, int, int, int, int, PTR));
+adjust_aux_out_post (bfd *, void *, int, int, int, int, void *);
static void
-create_go32_stub PARAMS ((bfd *));
-
-/* All that ..._PRE and ...POST functions are called from the corresponding
- coff_swap... functions. The ...PRE functions are called at the beginning
- of the function and the ...POST functions at the end of the swap routines. */
+create_go32_stub (bfd *);
#define COFF_ADJUST_FILEHDR_IN_POST adjust_filehdr_in_post
#define COFF_ADJUST_FILEHDR_OUT_PRE adjust_filehdr_out_pre
#define COFF_ADJUST_AUX_OUT_PRE adjust_aux_out_pre
#define COFF_ADJUST_AUX_OUT_POST adjust_aux_out_post
+static const bfd_target *go32_check_format (bfd *);
+
+#define COFF_CHECK_FORMAT go32_check_format
+
static bfd_boolean
- go32_stubbed_coff_bfd_copy_private_bfd_data PARAMS ((bfd *, bfd *));
+ go32_stubbed_coff_bfd_copy_private_bfd_data (bfd *, bfd *);
#define coff_bfd_copy_private_bfd_data go32_stubbed_coff_bfd_copy_private_bfd_data
#include "coff-i386.c"
-/* I hold in the usrdata the stub. */
-#define bfd_coff_go32stub bfd_usrdata
-
-/* This macro is used, because I cannot assume the endianess of the
+/* This macro is used, because I cannot assume the endianness of the
host system. */
-#define _H(index) (H_GET_16 (abfd, (header+index*2)))
+#define _H(index) (H_GET_16 (abfd, (header + index * 2)))
/* These bytes are a 2048-byte DOS executable, which loads the COFF
image into memory and then runs it. It is called 'stub'. */
-static const unsigned char stub_bytes[STUBSIZE] =
+static const unsigned char stub_bytes[GO32_STUBSIZE] =
{
#include "go32stub.h"
};
/*
I have not commented each swap function below, because the
technique is in any function the same. For the ...in function,
- all the pointers are adjusted by adding STUBSIZE and for the
+ all the pointers are adjusted by adding GO32_STUBSIZE and for the
...out function, it is subtracted first and after calling the
standard swap function it is reset to the old value. */
if (val != 0) val += diff
static void
-adjust_filehdr_in_post (abfd, src, dst)
- bfd *abfd;
- PTR src;
- PTR dst;
+adjust_filehdr_in_post (bfd * abfd ATTRIBUTE_UNUSED,
+ void * src,
+ void * dst)
{
FILHDR *filehdr_src = (FILHDR *) src;
struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
- ADJUST_VAL (filehdr_dst->f_symptr, STUBSIZE);
-
- /* Save now the stub to be used later. */
- bfd_coff_go32stub (abfd) = (PTR) bfd_alloc (abfd, (bfd_size_type) STUBSIZE);
+ ADJUST_VAL (filehdr_dst->f_symptr, GO32_STUBSIZE);
- /* Since this function returns no status, I do not set here
- any bfd_error_...
- That means, before the use of bfd_coff_go32stub (), this value
- should be checked if it is != NULL. */
- if (bfd_coff_go32stub (abfd) == NULL)
- return;
- memcpy (bfd_coff_go32stub (abfd), filehdr_src->stub, STUBSIZE);
+ /* Save now the stub to be used later. Put the stub data to FILEHDR_DST
+ first as coff_data (abfd) still does not exist. It may not even be ever
+ created as we are just checking the file format of ABFD. */
+ memcpy (filehdr_dst->go32stub, filehdr_src->stub, GO32_STUBSIZE);
+ filehdr_dst->f_flags |= F_GO32STUB;
}
static void
-adjust_filehdr_out_pre (abfd, in, out)
- bfd *abfd;
- PTR in;
- PTR out;
+adjust_filehdr_out_pre (bfd * abfd, void * in, void * out)
{
struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
FILHDR *filehdr_out = (FILHDR *) out;
create_go32_stub (abfd);
/* Copy the stub to the file header. */
- if (bfd_coff_go32stub (abfd) != NULL)
- memcpy (filehdr_out->stub, bfd_coff_go32stub (abfd), STUBSIZE);
+ if (coff_data (abfd)->go32stub != NULL)
+ memcpy (filehdr_out->stub, coff_data (abfd)->go32stub, GO32_STUBSIZE);
else
/* Use the default. */
- memcpy (filehdr_out->stub, stub_bytes, STUBSIZE);
+ memcpy (filehdr_out->stub, stub_bytes, GO32_STUBSIZE);
- ADJUST_VAL (filehdr_in->f_symptr, -STUBSIZE);
+ ADJUST_VAL (filehdr_in->f_symptr, -GO32_STUBSIZE);
}
static void
-adjust_filehdr_out_post (abfd, in, out)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR in;
- PTR out ATTRIBUTE_UNUSED;
+adjust_filehdr_out_post (bfd * abfd ATTRIBUTE_UNUSED,
+ void * in,
+ void * out ATTRIBUTE_UNUSED)
{
struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
/* Undo the above change. */
- ADJUST_VAL (filehdr_in->f_symptr, STUBSIZE);
+ ADJUST_VAL (filehdr_in->f_symptr, GO32_STUBSIZE);
}
static void
-adjust_scnhdr_in_post (abfd, ext, in)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR ext ATTRIBUTE_UNUSED;
- PTR in;
+adjust_scnhdr_in_post (bfd * abfd ATTRIBUTE_UNUSED,
+ void * ext ATTRIBUTE_UNUSED,
+ void * in)
{
struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
- ADJUST_VAL (scnhdr_int->s_scnptr, STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_relptr, STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_lnnoptr, STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
}
static void
-adjust_scnhdr_out_pre (abfd, in, out)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR in;
- PTR out ATTRIBUTE_UNUSED;
+adjust_scnhdr_out_pre (bfd * abfd ATTRIBUTE_UNUSED,
+ void * in,
+ void * out ATTRIBUTE_UNUSED)
{
struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
- ADJUST_VAL (scnhdr_int->s_scnptr, -STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_relptr, -STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_lnnoptr, -STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_scnptr, -GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_relptr, -GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_lnnoptr, -GO32_STUBSIZE);
}
static void
-adjust_scnhdr_out_post (abfd, in, out)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR in;
- PTR out ATTRIBUTE_UNUSED;
+adjust_scnhdr_out_post (bfd * abfd ATTRIBUTE_UNUSED,
+ void * in,
+ void * out ATTRIBUTE_UNUSED)
{
struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
- ADJUST_VAL (scnhdr_int->s_scnptr, STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_relptr, STUBSIZE);
- ADJUST_VAL (scnhdr_int->s_lnnoptr, STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_scnptr, GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_relptr, GO32_STUBSIZE);
+ ADJUST_VAL (scnhdr_int->s_lnnoptr, GO32_STUBSIZE);
}
static void
-adjust_aux_in_post (abfd, ext1, type, class, indx, numaux, in1)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR ext1 ATTRIBUTE_UNUSED;
- int type;
- int class;
- int indx ATTRIBUTE_UNUSED;
- int numaux ATTRIBUTE_UNUSED;
- PTR in1;
+adjust_aux_in_post (bfd * abfd ATTRIBUTE_UNUSED,
+ void * ext1 ATTRIBUTE_UNUSED,
+ int type,
+ int in_class,
+ int indx ATTRIBUTE_UNUSED,
+ int numaux ATTRIBUTE_UNUSED,
+ void * in1)
{
union internal_auxent *in = (union internal_auxent *) in1;
- if (class == C_BLOCK || class == C_FCN || ISFCN (type) || ISTAG (class))
+ if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
+ || ISTAG (in_class))
{
- ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, STUBSIZE);
+ ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
}
}
static void
-adjust_aux_out_pre (abfd, inp, type, class, indx, numaux, extp)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR inp;
- int type;
- int class;
- int indx ATTRIBUTE_UNUSED;
- int numaux ATTRIBUTE_UNUSED;
- PTR extp ATTRIBUTE_UNUSED;
+adjust_aux_out_pre (bfd *abfd ATTRIBUTE_UNUSED,
+ void * inp,
+ int type,
+ int in_class,
+ int indx ATTRIBUTE_UNUSED,
+ int numaux ATTRIBUTE_UNUSED,
+ void * extp ATTRIBUTE_UNUSED)
{
union internal_auxent *in = (union internal_auxent *) inp;
- if (class == C_BLOCK || class == C_FCN || ISFCN (type) || ISTAG (class))
+ if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
+ || ISTAG (in_class))
{
- ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, -STUBSIZE);
+ ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, -GO32_STUBSIZE);
}
}
static void
-adjust_aux_out_post (abfd, inp, type, class, indx, numaux, extp)
- bfd *abfd ATTRIBUTE_UNUSED;
- PTR inp;
- int type;
- int class;
- int indx ATTRIBUTE_UNUSED;
- int numaux ATTRIBUTE_UNUSED;
- PTR extp ATTRIBUTE_UNUSED;
+adjust_aux_out_post (bfd *abfd ATTRIBUTE_UNUSED,
+ void * inp,
+ int type,
+ int in_class,
+ int indx ATTRIBUTE_UNUSED,
+ int numaux ATTRIBUTE_UNUSED,
+ void * extp ATTRIBUTE_UNUSED)
{
union internal_auxent *in = (union internal_auxent *) inp;
- if (class == C_BLOCK || class == C_FCN || ISFCN (type) || ISTAG (class))
+ if (in_class == C_BLOCK || in_class == C_FCN || ISFCN (type)
+ || ISTAG (in_class))
{
- ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, STUBSIZE);
+ ADJUST_VAL (in->x_sym.x_fcnary.x_fcn.x_lnnoptr, GO32_STUBSIZE);
}
}
is taken. */
static void
-create_go32_stub (abfd)
- bfd *abfd;
+create_go32_stub (bfd *abfd)
{
/* Do it only once. */
- if (bfd_coff_go32stub (abfd) == NULL)
+ if (coff_data (abfd)->go32stub == NULL)
{
char *stub;
struct stat st;
goto stub_end;
}
/* Compute the size of the stub (it is every thing up
- to the beginning of the coff image). */
+ to the beginning of the coff image). */
coff_start = (long) _H (2) * 512L;
if (_H (1))
coff_start += (long) _H (1) - 512L;
/* Currently there is only a fixed stub size of 2048 bytes
- supported. */
+ supported. */
if (coff_start != 2048)
{
close (f);
close (f);
goto stub_end;
}
- if (memcmp (magic, "go32stub", 8) != 0)
+ if (! CONST_STRNEQ (magic, "go32stub"))
{
close (f);
goto stub_end;
}
/* Now we found a correct stub (hopefully). */
- bfd_coff_go32stub (abfd)
- = (PTR) bfd_alloc (abfd, (bfd_size_type) coff_start);
- if (bfd_coff_go32stub (abfd) == NULL)
+ coff_data (abfd)->go32stub = bfd_alloc (abfd, (bfd_size_type) coff_start);
+ if (coff_data (abfd)->go32stub == NULL)
{
close (f);
return;
}
lseek (f, 0L, SEEK_SET);
- if ((unsigned long) read (f, bfd_coff_go32stub (abfd), coff_start)
+ if ((unsigned long) read (f, coff_data (abfd)->go32stub, coff_start)
!= coff_start)
{
- bfd_release (abfd, bfd_coff_go32stub (abfd));
- bfd_coff_go32stub (abfd) = NULL;
+ bfd_release (abfd, coff_data (abfd)->go32stub);
+ coff_data (abfd)->go32stub = NULL;
}
close (f);
}
stub_end:
/* There was something wrong above, so use now the standard builtin
stub. */
- if (bfd_coff_go32stub (abfd) == NULL)
+ if (coff_data (abfd)->go32stub == NULL)
{
- bfd_coff_go32stub (abfd)
- = (PTR) bfd_alloc (abfd, (bfd_size_type) STUBSIZE);
- if (bfd_coff_go32stub (abfd) == NULL)
+ coff_data (abfd)->go32stub
+ = bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
+ if (coff_data (abfd)->go32stub == NULL)
return;
- memcpy (bfd_coff_go32stub (abfd), stub_bytes, STUBSIZE);
+ memcpy (coff_data (abfd)->go32stub, stub_bytes, GO32_STUBSIZE);
}
}
to the new obfd. */
static bfd_boolean
-go32_stubbed_coff_bfd_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+go32_stubbed_coff_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
{
/* Check if both are the same targets. */
if (ibfd->xvec != obfd->xvec)
return TRUE;
- /* Check if both have a valid stub. */
- if (bfd_coff_go32stub (ibfd) == NULL
- || bfd_coff_go32stub (obfd) == NULL)
+ /* Check if we have a source stub. */
+ if (coff_data (ibfd)->go32stub == NULL)
return TRUE;
+ /* As adjust_filehdr_out_pre may get called only after this function,
+ optionally allocate the output stub. */
+ if (coff_data (obfd)->go32stub == NULL)
+ coff_data (obfd)->go32stub = bfd_alloc (obfd,
+ (bfd_size_type) GO32_STUBSIZE);
+
/* Now copy the stub. */
- memcpy (bfd_coff_go32stub (obfd), bfd_coff_go32stub (ibfd), STUBSIZE);
+ if (coff_data (obfd)->go32stub != NULL)
+ memcpy (coff_data (obfd)->go32stub, coff_data (ibfd)->go32stub,
+ GO32_STUBSIZE);
return TRUE;
}
+
+/* coff_object_p only checks 2 bytes F_MAGIC at GO32_STUBSIZE inside the file
+ which is too fragile. */
+
+static const bfd_target *
+go32_check_format (bfd *abfd)
+{
+ char mz[2];
+
+ if (bfd_bread (mz, 2, abfd) != 2 || mz[0] != 'M' || mz[1] != 'Z')
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ if (bfd_seek (abfd, 0, SEEK_SET) != 0)
+ return NULL;
+
+ return coff_object_p (abfd);
+}
projects / deliverable / binutils-gdb.git / blobdiff