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Initial revision
This commit is contained in:
John Gilmore
parent
cbdc790909
commit
ba9137fe2d
500
bfd/coff-rs6000.c
Normal file
500
bfd/coff-rs6000.c
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@ -0,0 +1,500 @@
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/* IBM RS/6000 "XCOFF" back-end for BFD.
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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Written by Metin G. Ozisik, Mimi Phûông-Thåo Võ, and John Gilmore.
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Archive support from Damon A. Permezel.
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Contributed by IBM Corporation and Cygnus Support.
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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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/* This port currently only handles reading object files -- no archive
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support, no core files, and no writing. FIXME. */
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/* Internalcoff.h and coffcode.h modify themselves based on this flag. */
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#define RS6000COFF_C 1
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#include <ansidecl.h>
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#include <sysdep.h>
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#include "bfd.h"
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#include "libbfd.h"
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#include "obstack.h"
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#include "internalcoff.h"
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#include "rs6000coff.h"
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#include "libcoff.h"
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/* The main body of code is in coffcode.h. */
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#include "coffcode.h"
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#if 0
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/* These are not yet ready for prime time. */
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#define coff_core_file_matches_executable_p \
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rs6000coff_core_file_matches_executable_p
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#define coff_get_section_contents rs6000coff_get_section_contents
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#define coff_openr_next_archived_file rs6000coff_openr_next_archived_file
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#define coff_write_armap rs6000coff_write_armap
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#define coff_stat_arch_elt rs6000coff_stat_arch_elt
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#define coff_snarf_ar_hdr rs6000coff_snarf_ar_hdr
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#define coff_mkarchive rs6000coff_mkarchive
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static bfd_target *rs6000coff_archive_p ();
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static bfd_target *rs6000coff_core_p ();
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static bfd_target *rs6000coff_object_p ();
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static bfd_target *rs6000coff_real_object_p ();
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#endif
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bfd_target rs6000coff_vec =
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{
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"coff_rs6000", /* name */
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bfd_target_coff_flavour,
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true, /* data byte order is big */
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true, /* header byte order is big */
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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),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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'/', /* ar_pad_char */
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15, /* ar_max_namelen??? FIXMEmgo */
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3, /* default alignment power */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
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{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
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bfd_generic_archive_p, _bfd_dummy_target},
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{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
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bfd_false},
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{bfd_false, coff_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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JUMP_TABLE(coff),
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COFF_SWAP_TABLE
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};
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#if 0 /* we don't have include file for this yet */
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/* ------------------------------------------------------------------------ */
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/* Support for archive file stuff.. */
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/* Stolen from Damon A. Parmazel's `bfd' portation. */
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/* ------------------------------------------------------------------------ */
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#include "/usr/include/ar.h" /* <ar.h> doesn't do it. */
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#define arch_hdr(bfd) \
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((struct ar_hdr *) \
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(((struct areltdata *)((bfd)->arelt_data))->arch_header))
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static boolean
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rs6000coff_mkarchive (abfd)
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bfd *abfd;
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{
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bfd_error = invalid_operation; /* write not supported */
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}
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/* This functions reads an arch header and returns an areltdata pointer, or
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NULL on error.
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Presumes the file pointer is already in the right place (ie pointing
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to the ar_hdr in the file). Moves the file pointer; on success it
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should be pointing to the front of the file contents; on failure it
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could have been moved arbitrarily.
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*/
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struct areltdata *
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rs6000coff_snarf_ar_hdr (abfd)
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bfd *abfd;
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{
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extern int errno;
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struct {
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struct ar_hdr hdr;
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char namebuf[256];
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} h;
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int size;
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struct areltdata *ared;
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unsigned int namelen = 0;
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char *allocptr;
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size = sizeof (h.hdr);
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if (bfd_read(&h.hdr, 1, size, abfd) != size) {
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bfd_error = no_more_archived_files;
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return NULL;
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}
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size = atoi(h.hdr.ar_namlen); /* ar_name[] length */
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size += size & 1;
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if (bfd_read(&h.hdr._ar_name.ar_name[2], 1, size, abfd) != size) {
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bfd_error = no_more_archived_files;
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return NULL;
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}
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if (strncmp(h.hdr._ar_name.ar_fmag + size, AIAFMAG, 2)) {
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bfd_error = malformed_archive;
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return NULL;
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}
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h.hdr._ar_name.ar_name[size] = 0; /* terminate filename */
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/*
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* if the filename is NULL, we're (probably) at the end.
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*/
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if (size == 0) {
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bfd_error = no_more_archived_files;
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return NULL;
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}
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size += sizeof (h.hdr);
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allocptr = bfd_zalloc(abfd, sizeof (*ared) + size);
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if (allocptr == NULL) {
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bfd_error = no_memory;
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return NULL;
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}
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ared = (struct areltdata *) allocptr;
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ared->arch_header = (void *) (allocptr + sizeof (struct areltdata));
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memcpy ((char *) ared->arch_header, &h.hdr, size);
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ared->parsed_size = atoi(h.hdr.ar_size);
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ared->filename = ((AR_HDR*) ared->arch_header)->_ar_name.ar_name;
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return ared;
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}
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/*
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* xcoff_openr_next_archived_file - xcoff has nxt/prv seek addrs.
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*/
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static bfd *
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rs6000coff_openr_next_archived_file(archive, last_file)
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bfd *archive, *last_file;
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{
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file_ptr filestart;
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if (!last_file)
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filestart = bfd_ardata(archive)->first_file_filepos;
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else
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filestart = atol(arch_hdr(last_file)->ar_nxtmem);
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return get_elt_at_filepos (archive, filestart);
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}
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static bfd_target *
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rs6000coff_archive_p (abfd)
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bfd *abfd;
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{
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struct fl_hdr hdr;
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register struct artdata *art;
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if (bfd_read (&hdr, 1, sizeof (hdr), abfd) != sizeof (hdr)) {
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bfd_error = wrong_format;
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return 0;
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}
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if (strncmp(hdr.fl_magic, AIAMAG, SAIAMAG)) {
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bfd_error = wrong_format;
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return 0;
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}
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/*
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* bfd_ardata() accesses the bfd->tdata field.
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*/
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abfd->tdata = (void *) bfd_zalloc(abfd, sizeof (*art) + sizeof (hdr));
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if ((art = bfd_ardata (abfd)) == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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art->first_file_filepos = atoi(hdr.fl_fstmoff);
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*(struct fl_hdr *) (1 + art) = hdr;
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/*
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* slurp in the member table, which I thing is the armap equivalent.
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xcoff_slurp_armap(abfd);
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*/
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if (abfd->obj_arch == bfd_arch_unknown) /* FIXME!!! */
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abfd->obj_arch = bfd_arch_rs6000;
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return abfd->xvec;
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}
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static int
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rs6000coff_stat_arch_elt(abfd, buf)
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bfd *abfd;
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struct stat *buf;
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{
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struct ar_hdr *hdr;
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char *aloser;
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if (abfd->arelt_data == NULL) {
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bfd_error = invalid_operation;
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return -1;
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}
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hdr = arch_hdr (abfd);
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#define foo(arelt, stelt, size) \
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buf->stelt = strtol (hdr->arelt, &aloser, size); \
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if (aloser == hdr->arelt) return -1;
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foo (ar_date, st_mtime, 10);
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foo (ar_uid, st_uid, 10);
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foo (ar_gid, st_gid, 10);
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foo (ar_mode, st_mode, 8);
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foo (ar_size, st_size, 10);
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return 0;
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}
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static boolean
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rs6000coff_write_armap (arch, elength, map, orl_count, stridx)
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bfd *arch;
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unsigned int elength;
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struct orl *map;
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{
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bfd_error = invalid_operation;
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return false;
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}
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#endif /* if 0 */
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#if 0 /* not sure if this will work on all hosts yet! */
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#ifdef AOUTHDR
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#undef AOUTHDR
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#endif
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/* ------------------------------------------------------------------------ */
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/* Support for core file stuff.. */
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/* ------------------------------------------------------------------------ */
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#include <sys/user.h>
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#include <sys/ldr.h>
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#include <sys/core.h>
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/* Number of special purpose registers supported bygdb. This value should match
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`tm.h' in gdb directory. Clean this mess up and use the macros in sys/reg.h.
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FIXMEmgo. */
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#define NUM_OF_SPEC_REGS 7
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#define STACK_END_ADDR 0x2ff80000
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#define core_hdr(bfd) (((Rs6kCorData*)(bfd->tdata))->hdr)
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#define core_datasec(bfd) (((Rs6kCorData*)(bfd->tdata))->data_section)
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#define core_stacksec(bfd) (((Rs6kCorData*)(bfd->tdata))->stack_section)
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#define core_regsec(bfd) (((Rs6kCorData*)(bfd->tdata))->reg_section)
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#define core_reg2sec(bfd) (((Rs6kCorData*)(bfd->tdata))->reg2_section)
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/* These are stored in the bfd's tdata */
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typedef struct {
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struct core *hdr; /* core file header */
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asection *data_section,
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*stack_section,
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*reg_section, /* section for GPRs and special registers. */
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*reg2_section; /* section for FPRs. */
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} Rs6kCorData;
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/* Decide if a given bfd represents a `core' file or not. There really is no
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magic number or anything like, in rs6000coff. */
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static bfd_target *
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rs6000coff_core_p (abfd)
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bfd *abfd;
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{
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int fd;
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struct core_dump coredata;
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struct stat statbuf;
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char *tmpptr;
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/* Use bfd_xxx routines, rather than O/S primitives to read coredata. FIXMEmgo */
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fd = open (abfd->filename, O_RDONLY);
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fstat (fd, &statbuf);
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read (fd, &coredata, sizeof (struct core_dump));
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close (fd);
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if (coredata.c_tab < (sizeof (coredata.c_u) + (int)&coredata.c_u - (int)&coredata.c_signo) ||
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coredata.c_tab >= statbuf.st_size ||
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(long)coredata.c_stack <= (long)coredata.c_tab ) {
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return NULL;
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}
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/*
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If it looks like core file, then.....
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read core file header..... (maybe you've done it above..)
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*/
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/* maybe you should alloc space for the whole core chunk over here!! FIXMEmgo */
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tmpptr = (char*)bfd_zalloc (abfd, sizeof (Rs6kCorData));
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set_tdata (abfd, tmpptr);
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/* .stack section. */
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if ((core_stacksec (abfd) = (asection*) bfd_zalloc (abfd, sizeof (asection)))
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== NULL) {
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bfd_error = no_memory;
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/* bfd_release (abfd, ???? ) */
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return NULL;
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}
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core_stacksec (abfd)->name = ".stack";
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core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
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core_stacksec (abfd)->size = coredata.c_size;
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core_stacksec (abfd)->vma = STACK_END_ADDR - coredata.c_size;
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core_stacksec (abfd)->filepos = coredata.c_stack; /*???? */
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/* .reg section for GPRs and special registers. */
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if ((core_regsec (abfd) = (asection*) bfd_zalloc (abfd, sizeof (asection)))
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== NULL) {
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bfd_error = no_memory;
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/* bfd_release (abfd, ???? ) */
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return NULL;
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}
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core_regsec (abfd)->name = ".reg";
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core_regsec (abfd)->flags = SEC_ALLOC;
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core_regsec (abfd)->size = (32 + NUM_OF_SPEC_REGS) * 4;
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core_regsec (abfd)->vma = NULL; /* not used?? */
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core_regsec (abfd)->filepos =
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(char*)&coredata.c_u.u_save - (char*)&coredata;
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/* .reg2 section for FPRs (floating point registers). */
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if ((core_reg2sec (abfd) = (asection*) bfd_zalloc (abfd, sizeof (asection)))
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== NULL) {
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bfd_error = no_memory;
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/* bfd_release (abfd, ???? ) */
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return NULL;
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}
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core_reg2sec (abfd)->name = ".reg2";
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||||
core_reg2sec (abfd)->flags = SEC_ALLOC;
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core_reg2sec (abfd)->size = 8 * 32; /* 32 FPRs. */
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||||
core_reg2sec (abfd)->vma = NULL; /* not used?? */
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||||
core_reg2sec (abfd)->filepos =
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(char*)&coredata.c_u.u_save.fpr[0] - (char*)&coredata;
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||||
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/* set up section chain here. */
|
||||
abfd->section_count = 3;
|
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abfd->sections = core_stacksec (abfd);
|
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core_stacksec (abfd)->next = core_regsec(abfd);
|
||||
core_regsec (abfd)->next = core_reg2sec (abfd);
|
||||
core_reg2sec (abfd)->next = NULL;
|
||||
|
||||
return abfd->xvec; /* this is garbage for now. */
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* return `true' if given core is from the given executable.. */
|
||||
static boolean
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||||
rs6000coff_core_file_matches_executable_p (core_bfd, exec_bfd)
|
||||
bfd *core_bfd;
|
||||
bfd *exec_bfd;
|
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{
|
||||
FILE *fd;
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||||
struct core_dump coredata;
|
||||
struct ld_info ldinfo;
|
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char pathname [1024];
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char *str1, *str2;
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||||
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/* Use bfd_xxx routines, rather than O/S primitives, do error checking!!
|
||||
FIXMEmgo */
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fd = fopen (core_bfd->filename, "r");
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||||
fread (&coredata, sizeof (struct core_dump), 1, fd);
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||||
fseek (fd, (long)coredata.c_tab, 0);
|
||||
fread (&ldinfo, (char*)&ldinfo.ldinfo_filename[0] - (char*)&ldinfo.ldinfo_next,
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||||
1, fd);
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||||
fscanf (fd, "%s", pathname);
|
||||
printf ("path: %s\n", pathname);
|
||||
|
||||
str1 = strrchr (pathname, '/');
|
||||
str2 = strrchr (exec_bfd->filename, '/');
|
||||
|
||||
/* step over character '/' */
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||||
str1 = str1 ? str1+1 : &pathname[0];
|
||||
str2 = str2 ? str2+1 : exec_bfd->filename;
|
||||
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||||
fclose (fd);
|
||||
return strcmp (str1, str2);
|
||||
}
|
||||
|
||||
|
||||
static boolean
|
||||
rs6000coff_get_section_contents (abfd, section, location, offset, count)
|
||||
bfd *abfd;
|
||||
sec_ptr section;
|
||||
PTR location;
|
||||
file_ptr offset;
|
||||
int count;
|
||||
{
|
||||
if (count == 0)
|
||||
return true;
|
||||
|
||||
/* Reading a core file's sections will be slightly different. For the
|
||||
rest of them we can use bfd_generic_get_section_contents () I suppose. */
|
||||
/* Make sure this routine works for any bfd and any section. FIXMEmgo. */
|
||||
|
||||
if (abfd->format == bfd_core && strcmp (section->name, ".reg") == 0) {
|
||||
|
||||
struct mstsave mstatus;
|
||||
int regoffset = (char*)&mstatus.gpr[0] - (char*)&mstatus;
|
||||
|
||||
/* Assert that the only way this code will be executed is reading the
|
||||
whole section. */
|
||||
if (offset || count != (sizeof(mstatus.gpr) + (4 * NUM_OF_SPEC_REGS)))
|
||||
printf ("ERROR! in rs6000coff_get_section_contents()\n");
|
||||
|
||||
/* for `.reg' section, `filepos' is a pointer to the `mstsave' structure
|
||||
in the core file. */
|
||||
|
||||
/* read GPR's into the location. */
|
||||
if ( bfd_seek(abfd, section->filepos + regoffset, SEEK_SET) == -1
|
||||
|| bfd_read(location, 1, sizeof (mstatus.gpr), abfd) != sizeof (mstatus.gpr))
|
||||
return (false); /* on error */
|
||||
|
||||
/* increment location to the beginning of special registers in the section,
|
||||
reset register offset value to the beginning of first special register
|
||||
in mstsave structure, and read special registers. */
|
||||
|
||||
location = (PTR) ((char*)location + sizeof (mstatus.gpr));
|
||||
regoffset = (char*)&mstatus.iar - (char*)&mstatus;
|
||||
|
||||
if ( bfd_seek(abfd, section->filepos + regoffset, SEEK_SET) == -1
|
||||
|| bfd_read(location, 1, 4 * NUM_OF_SPEC_REGS, abfd) !=
|
||||
4 * NUM_OF_SPEC_REGS)
|
||||
return (false); /* on error */
|
||||
|
||||
/* increment location address, and read the special registers.. */
|
||||
/* FIXMEmgo */
|
||||
return (true);
|
||||
}
|
||||
|
||||
/* else, use default bfd section content transfer. */
|
||||
else
|
||||
return bfd_generic_get_section_contents
|
||||
(abfd, section, location, offset, count);
|
||||
}
|
||||
|
||||
#endif /* if 0 - for CORE */
|
||||
|
||||
44
bfd/cpu-rs6000.c
Normal file
44
bfd/cpu-rs6000.c
Normal file
@ -0,0 +1,44 @@
|
||||
/* BFD back-end for rs6000 support
|
||||
Copyright (C) 1990-1991 Free Software Foundation, Inc.
|
||||
Written by Mimi Phûông-Thåo Võ of IBM and John Gilmore of Cygnus Support.
|
||||
|
||||
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
|
||||
(at your option) any later version.
|
||||
|
||||
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 this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#include "bfd.h"
|
||||
#include "sysdep.h"
|
||||
#include "libbfd.h"
|
||||
|
||||
static bfd_arch_info_type arch_info_struct =
|
||||
{
|
||||
32, /* 32 bits in a word */
|
||||
32, /* 32 bits in an address */
|
||||
8, /* 8 bits in a byte */
|
||||
bfd_arch_rs6000,
|
||||
6000, /* only 1 machine */
|
||||
"rs6000",
|
||||
"rs6000:6000",
|
||||
true, /* the one and only */
|
||||
bfd_default_compatible,
|
||||
bfd_default_scan ,
|
||||
0,
|
||||
0,
|
||||
};
|
||||
|
||||
void DEFUN_VOID(bfd_rs6000_arch)
|
||||
{
|
||||
bfd_arch_linkin(&arch_info_struct);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user