dae31cf51b
* ecoffswap.h: New file for ECOFF swapping functions which differ only slightly for different targets. * libecoff.h: Added prototypes for ecoff.c functions. (ecoff_backend_data): New structure. (ecoff_tdata): Added backend_data field. Changed external data pointers to be PTR rather than to a particular struct. (ecoff_symbol_struct): Moved in from coff-mips.c. * coff-alpha.c, coff-mips.c: Moved common functions into ecoff.c. Added ECOFF backend structures. Include ecoffswap.h. * coff-msym.c: Removed; superseded by ecoffswap.h. * bfd.c: Include coff/internal.h. * Makefile.in (BFD_LIBS): Removed coff-mips.o and coff-msym.o. Added ecoff.o. (BFD64_BACKENDS): Added coff-alpha.o. (CFILES): Removed coff-msym.c. Added ecoff.c. (bfd.o): Added dependency on $(INCDIR)/coff/sym.h. (coff-mips.o): Added dependency on ecoffswap.h and coff/ecoff.h. (ecoff.o, coff-alpha.o): New targets. (coff-msym.o): Removed target.
329 lines
11 KiB
C
329 lines
11 KiB
C
/* BFD back-end for ALPHA Extended-Coff files.
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Copyright 1993 Free Software Foundation, Inc.
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Modified from coff-mips.c by Steve Chamberlain <sac@cygnus.com> and
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Ian Lance Taylor <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 2 of the License, or
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(at your option) any later version.
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "seclet.h"
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#include "coff/internal.h"
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#include "coff/sym.h"
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#include "coff/symconst.h"
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#include "coff/ecoff.h"
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#include "coff/alpha.h"
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#include "libcoff.h"
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#include "libecoff.h"
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/* Prototypes for static functions. */
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static boolean alpha_ecoff_bad_format_hook PARAMS ((bfd *abfd, PTR filehdr));
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static PTR alpha_ecoff_mkobject_hook PARAMS ((bfd *abfd, PTR filehdr,
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PTR aouthdr));
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static void alpha_ecoff_swap_reloc_in PARAMS ((bfd *, PTR,
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struct internal_reloc *));
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static void alpha_ecoff_swap_reloc_out PARAMS ((bfd *,
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const struct internal_reloc *,
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PTR));
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/* ECOFF has COFF sections, but the debugging information is stored in
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a completely different format. ECOFF targets use some of the
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swapping routines from coffswap.h, and some of the generic COFF
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routines in coffgen.c, but, unlike the real COFF targets, do not
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use coffcode.h itself.
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Get the generic COFF swapping routines, except for the reloc,
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symbol, and lineno ones. Give them ecoff names. */
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#define ALPHAECOFF
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#define NO_COFF_RELOCS
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#define NO_COFF_SYMBOLS
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#define NO_COFF_LINENOS
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#define coff_swap_filehdr_in alpha_ecoff_swap_filehdr_in
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#define coff_swap_filehdr_out alpha_ecoff_swap_filehdr_out
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#define coff_swap_aouthdr_in alpha_ecoff_swap_aouthdr_in
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#define coff_swap_aouthdr_out alpha_ecoff_swap_aouthdr_out
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#define coff_swap_scnhdr_in alpha_ecoff_swap_scnhdr_in
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#define coff_swap_scnhdr_out alpha_ecoff_swap_scnhdr_out
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#include "coffswap.h"
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/* Get the ECOFF swapping routines. */
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#define ECOFF_64
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#include "ecoffswap.h"
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/* This is the ECOFF backend structure. The backend_data field of the
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ecoff_tdata structure is set to this when an ECOFF BFD is
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initialized. This is used by the generic ECOFF routines. */
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static const struct ecoff_backend_data alpha_ecoff_backend_data =
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{
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/* Supported architecture. */
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bfd_arch_alpha,
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/* Big endian magic number. */
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0,
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/* Little endian magic number. */
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ALPHA_MAGIC,
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/* Alignment of debugging information. E.g., 4. */
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8,
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/* The page boundary used to align sections in a demand-paged
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executable file. E.g., 0x1000. */
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0x10000,
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/* Bitsize of constructor entries. */
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64,
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/* Sizes of external symbolic information. */
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sizeof (struct hdr_ext),
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sizeof (struct dnr_ext),
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sizeof (struct pdr_ext),
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sizeof (struct sym_ext),
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sizeof (struct opt_ext),
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sizeof (struct fdr_ext),
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sizeof (struct rfd_ext),
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sizeof (struct ext_ext),
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/* Functions to swap in external symbolic data. */
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ecoff_swap_hdr_in,
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ecoff_swap_dnr_in,
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ecoff_swap_pdr_in,
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ecoff_swap_sym_in,
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ecoff_swap_opt_in,
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ecoff_swap_fdr_in,
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ecoff_swap_rfd_in,
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ecoff_swap_ext_in,
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/* Functions to swap out external symbolic data. */
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ecoff_swap_hdr_out,
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ecoff_swap_dnr_out,
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ecoff_swap_pdr_out,
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ecoff_swap_sym_out,
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ecoff_swap_opt_out,
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ecoff_swap_fdr_out,
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ecoff_swap_rfd_out,
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ecoff_swap_ext_out,
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/* External reloc size. */
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RELSZ,
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/* Reloc swapping functions. */
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alpha_ecoff_swap_reloc_in,
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alpha_ecoff_swap_reloc_out
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};
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/* See whether the magic number matches. */
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static boolean
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alpha_ecoff_bad_format_hook (abfd, filehdr)
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bfd *abfd;
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PTR filehdr;
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{
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
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if (ALPHA_ECOFF_BADMAG (*internal_f))
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return false;
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return true;
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}
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/* Create an ECOFF object. */
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static boolean
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alpha_ecoff_mkobject (abfd)
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bfd *abfd;
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{
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abfd->tdata.ecoff_obj_data = ((struct ecoff_tdata *)
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bfd_zalloc (abfd, sizeof (ecoff_data_type)));
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if (abfd->tdata.ecoff_obj_data == NULL)
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{
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bfd_error = no_memory;
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return false;
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}
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ecoff_data (abfd)->backend_data = &alpha_ecoff_backend_data;
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/* Always create a .scommon section for every BFD. This is a hack so
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that the linker has something to attach scSCommon symbols to. */
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bfd_make_section (abfd, SCOMMON);
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return true;
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}
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/* Create the MIPS ECOFF backend specific information. */
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static PTR
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alpha_ecoff_mkobject_hook (abfd, filehdr, aouthdr)
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bfd *abfd;
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PTR filehdr;
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PTR aouthdr;
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{
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
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struct internal_aouthdr *internal_a = (struct internal_aouthdr *) aouthdr;
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ecoff_data_type *ecoff;
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if (alpha_ecoff_mkobject (abfd) == false)
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return NULL;
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ecoff = ecoff_data (abfd);
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ecoff->gp_size = 8;
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ecoff->sym_filepos = internal_f->f_symptr;
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if (internal_a != (struct internal_aouthdr *) NULL)
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{
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int i;
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ecoff->text_start = internal_a->text_start;
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ecoff->text_end = internal_a->text_start + internal_a->tsize;
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ecoff->gp = internal_a->gp_value;
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ecoff->gprmask = internal_a->gprmask;
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for (i = 0; i < 4; i++)
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ecoff->cprmask[i] = internal_a->cprmask[i];
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if (internal_a->magic == ECOFF_AOUT_ZMAGIC)
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abfd->flags |= D_PAGED;
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}
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return (PTR) ecoff;
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}
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/* Reloc handling. MIPS ECOFF relocs are packed into 8 bytes in
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external form. They use a bit which indicates whether the symbol
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is external. */
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/* Swap a reloc in. */
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static void
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alpha_ecoff_swap_reloc_in (abfd, ext_ptr, intern)
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bfd *abfd;
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PTR ext_ptr;
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struct internal_reloc *intern;
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{
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const RELOC *ext = (RELOC *) ext_ptr;
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intern->r_vaddr = bfd_h_get_32 (abfd, (bfd_byte *) ext->r_vaddr);
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if (abfd->xvec->header_byteorder_big_p != false)
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{
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intern->r_symndx = (((int) ext->r_bits[0]
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<< RELOC_BITS0_SYMNDX_SH_LEFT_BIG)
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| ((int) ext->r_bits[1]
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<< RELOC_BITS1_SYMNDX_SH_LEFT_BIG)
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| ((int) ext->r_bits[2]
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<< RELOC_BITS2_SYMNDX_SH_LEFT_BIG));
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intern->r_type = ((ext->r_bits[3] & RELOC_BITS3_TYPE_BIG)
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>> RELOC_BITS3_TYPE_SH_BIG);
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intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_BIG) != 0;
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}
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else
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{
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intern->r_symndx = (((int) ext->r_bits[0]
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<< RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE)
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| ((int) ext->r_bits[1]
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<< RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE)
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| ((int) ext->r_bits[2]
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<< RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE));
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intern->r_type = ((ext->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
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>> RELOC_BITS3_TYPE_SH_LITTLE);
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intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) != 0;
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}
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}
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/* Swap a reloc out. */
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static void
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alpha_ecoff_swap_reloc_out (abfd, intern, dst)
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bfd *abfd;
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const struct internal_reloc *intern;
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PTR dst;
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{
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RELOC *ext = (RELOC *) dst;
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bfd_h_put_32 (abfd, intern->r_vaddr, (bfd_byte *) ext->r_vaddr);
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if (abfd->xvec->header_byteorder_big_p != false)
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{
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ext->r_bits[0] = intern->r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_BIG;
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ext->r_bits[1] = intern->r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_BIG;
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ext->r_bits[2] = intern->r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_BIG;
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ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_BIG)
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& RELOC_BITS3_TYPE_BIG)
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| (intern->r_extern ? RELOC_BITS3_EXTERN_BIG : 0));
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}
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else
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{
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ext->r_bits[0] = intern->r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE;
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ext->r_bits[1] = intern->r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE;
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ext->r_bits[2] = intern->r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE;
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ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_LITTLE)
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& RELOC_BITS3_TYPE_LITTLE)
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| (intern->r_extern ? RELOC_BITS3_EXTERN_LITTLE : 0));
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}
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}
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#define ecoff_core_file_p _bfd_dummy_target
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#define ecoff_core_file_failing_command _bfd_dummy_core_file_failing_command
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#define ecoff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
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#define ecoff_core_file_matches_executable_p \
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_bfd_dummy_core_file_matches_executable_p
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/* This is the COFF backend structure. The backend_data field of the
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bfd_target structure is set to this. The section reading code in
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coffgen.c uses this structure. */
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static CONST bfd_coff_backend_data alpha_ecoff_std_swap_table = {
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(void (*) PARAMS ((bfd *,PTR,int,int,PTR))) bfd_void, /* aux_in */
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(void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */
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(void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */
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(unsigned (*) PARAMS ((bfd *,PTR,int,int,PTR))) bfd_void, /* aux_out */
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(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */
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(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */
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(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* reloc_out */
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alpha_ecoff_swap_filehdr_out, alpha_ecoff_swap_aouthdr_out,
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alpha_ecoff_swap_scnhdr_out,
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FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, true,
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alpha_ecoff_swap_filehdr_in, alpha_ecoff_swap_aouthdr_in,
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alpha_ecoff_swap_scnhdr_in, alpha_ecoff_bad_format_hook,
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ecoff_set_arch_mach_hook, alpha_ecoff_mkobject_hook,
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ecoff_styp_to_sec_flags, ecoff_make_section_hook, ecoff_set_alignment_hook,
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ecoff_slurp_symbol_table
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};
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bfd_target ecoffalpha_little_vec =
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{
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"ecoff-littlealpha", /* name */
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bfd_target_ecoff_flavour,
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false, /* data byte order is little */
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false, /* header byte order is little */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* sect
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flags */
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0, /* leading underscore */
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' ', /* ar_pad_char */
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15, /* ar_max_namelen */
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4, /* minimum alignment power */
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_do_getl64, _do_getl_signed_64, _do_putl64,
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_do_getl32, _do_getl_signed_32, _do_putl32,
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_do_getl16, _do_getl_signed_16, _do_putl16, /* data */
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_do_getl64, _do_getl_signed_64, _do_putl64,
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_do_getl32, _do_getl_signed_32, _do_putl32,
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_do_getl16, _do_getl_signed_16, _do_putl16, /* hdrs */
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{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
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ecoff_archive_p, _bfd_dummy_target},
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{bfd_false, alpha_ecoff_mkobject, /* bfd_set_format */
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_bfd_generic_mkarchive, bfd_false},
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{bfd_false, ecoff_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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JUMP_TABLE (ecoff),
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(PTR) &alpha_ecoff_std_swap_table
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};
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