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* archive.c (bfd_ar_hdr_from_filesystem): support BFD_IN_MEMORY

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bfds; they have no "file" so we fake it.
	* bfd-in2.h: add bfd_make_writable and bfd_make_readable (regen)
	* libbfd.c (bfd_write): Allow writing to BFD_IN_MEMORY bfds by
 	resizing the memory buffer.
	* opncls.c (bfd_make_writable): New function; lets you write a
 	bfd_create'd bfd to an in-memory buffer.
	(bfd_make_readable): New function; lets you read back that buffer
 	as if it were from bfd_openr.  Used to build generated archive
 	members (winsup's ld's dlltool)
This commit is contained in:
DJ Delorie 1998-11-17 03:25:29 +00:00
parent d3ca9a538c
commit 020917f9d0
2 changed files with 104 additions and 11 deletions
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13
bfd/ChangeLog
View File

@ -1,3 +1,16 @@
Mon Nov 16 22:19:21 1998 DJ Delorie <dj@indy.delorie.com>
* archive.c (bfd_ar_hdr_from_filesystem): support BFD_IN_MEMORY
bfds; they have no "file" so we fake it.
* bfd-in2.h: add bfd_make_writable and bfd_make_readable (regen)
* libbfd.c (bfd_write): Allow writing to BFD_IN_MEMORY bfds by
resizing the memory buffer.
* opncls.c (bfd_make_writable): New function; lets you write a
bfd_create'd bfd to an in-memory buffer.
(bfd_make_readable): New function; lets you read back that buffer
as if it were from bfd_openr. Used to build generated archive
members (winsup's ld's dlltool)
Mon Nov 16 19:15:19 1998 Dave Brolley <brolley@cygnus.com>
* po/bfd.pot: Regenerated.

102
bfd/opncls.c
View File

@ -220,16 +220,17 @@ bfd_fdopenr (filename, target, fd)
return NULL;
}
#if defined(VMS) || defined(__GO32__)
nbfd->iostream = (PTR)fopen(filename, FOPEN_RB);
#ifndef HAVE_FDOPEN
nbfd->iostream = (PTR) fopen (filename, FOPEN_RB);
#else
/* (O_ACCMODE) parens are to avoid Ultrix header file bug */
switch (fdflags & (O_ACCMODE)) {
case O_RDONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RB); break;
case O_WRONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
case O_RDWR: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
default: abort ();
}
switch (fdflags & (O_ACCMODE))
{
case O_RDONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RB); break;
case O_WRONLY: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
case O_RDWR: nbfd->iostream = (PTR) fdopen (fd, FOPEN_RUB); break;
default: abort ();
}
#endif
if (nbfd->iostream == NULL)
@ -271,7 +272,7 @@ FUNCTION
bfd_openstreamr
SYNOPSIS
bfd *bfd_openstreamr();
bfd *bfd_openstreamr(const char *, const char *, PTR);
DESCRIPTION
@ -280,11 +281,12 @@ DESCRIPTION
*/
bfd *
bfd_openstreamr (filename, target, stream)
bfd_openstreamr (filename, target, streamarg)
const char *filename;
const char *target;
FILE *stream;
PTR streamarg;
{
FILE *stream = (FILE *) streamarg;
bfd *nbfd;
const bfd_target *target_vec;
@ -528,6 +530,84 @@ bfd_create (filename, templ)
return nbfd;
}
/*
FUNCTION
bfd_make_writable
SYNOPSIS
boolean bfd_make_writable(bfd *abfd);
DESCRIPTION
Takes a BFD as created by <<bfd_create>> and converts it
into one like as returned by <<bfd_openw>>. It does this
by converting the BFD to BFD_IN_MEMORY. It's assumed that
you will call <<bfd_make_readable>> on this bfd later.
RETURNS
<<true>> is returned if all is ok, otherwise <<false>>.
*/
boolean
bfd_make_writable(abfd)
bfd *abfd;
{
struct bfd_in_memory *bim;
if (abfd->direction != no_direction)
{
bfd_set_error (bfd_error_invalid_operation);
return false;
}
bim = (struct bfd_in_memory *) bfd_malloc (sizeof (struct bfd_in_memory));
abfd->iostream = (PTR) bim;
/* bfd_write will grow these as needed */
bim->size = 0;
bim->buffer = 0;
abfd->flags |= BFD_IN_MEMORY;
abfd->direction = write_direction;
abfd->where = 0;
return true;
}
/*
FUNCTION
bfd_make_readable
SYNOPSIS
boolean bfd_make_readable(bfd *abfd);
DESCRIPTION
Takes a BFD as created by <<bfd_create>> and
<<bfd_make_writable>> and converts it into one like as
returned by <<bfd_openr>>. It does this by writing the
contents out to the memory buffer, then reversing the
direction.
RETURNS
<<true>> is returned if all is ok, otherwise <<false>>. */
boolean
bfd_make_readable(abfd)
bfd *abfd;
{
if (abfd->direction != write_direction || !(abfd->flags & BFD_IN_MEMORY))
{
bfd_set_error (bfd_error_invalid_operation);
return false;
}
if (! BFD_SEND_FMT (abfd, _bfd_write_contents, (abfd)))
return false;
abfd->where = 0;
abfd->direction = read_direction;
return true;
}
/*
INTERNAL_FUNCTION
bfd_alloc