2315 lines
66 KiB
C
2315 lines
66 KiB
C
/* nlmconv.c -- NLM conversion program
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Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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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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/* Written by Ian Lance Taylor <ian@cygnus.com>.
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This program can be used to convert any appropriate object file
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into a NetWare Loadable Module (an NLM). It will accept a linker
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specification file which is identical to that accepted by the
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NetWare linker, NLMLINK, except that the INPUT command, normally
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used to give a list of object files to link together, is not used.
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This program will convert only a single object file. */
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#include <ansidecl.h>
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#include <stdio.h>
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#include <time.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <assert.h>
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#include <getopt.h>
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#include "bfd.h"
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#include "libiberty.h"
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#include "sysdep.h"
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#include "bucomm.h"
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/* Internal BFD NLM header. */
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#include "libnlm.h"
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#include "nlmconv.h"
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/* Needed for Alpha support. */
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#include "coff/sym.h"
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#include "coff/ecoff.h"
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/* If strerror is just a macro, we want to use the one from libiberty
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since it will handle undefined values. */
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#undef strerror
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extern char *strerror ();
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#ifndef localtime
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extern struct tm *localtime ();
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#endif
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#ifndef getenv
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extern char *getenv ();
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#endif
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#ifndef SEEK_SET
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#define SEEK_SET 0
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#endif
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#ifndef R_OK
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#define R_OK 4
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#define W_OK 2
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#define X_OK 1
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#endif
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/* Global variables. */
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/* The name used to invoke the program. */
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char *program_name;
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/* The version number. */
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extern char *program_version;
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/* Local variables. */
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/* Whether to print out debugging information (currently just controls
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whether it prints the linker command if there is one). */
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static int debug;
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/* The symbol table. */
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static asymbol **symbols;
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/* A section we create in the output file to hold pointers to where
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the sections of the input file end up. We will put a pointer to
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this section in the NLM header. These is an entry for each input
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section. The format is
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null terminated section name
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zeroes to adjust to 4 byte boundary
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4 byte section data file pointer
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4 byte section size
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We don't need a version number. The way we find this information
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is by finding a stamp in the NLM header information. If we need to
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change the format of this information, we can simply change the
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stamp. */
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static asection *secsec;
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/* A temporary file name to be unlinked on exit. Actually, for most
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errors, we leave it around. It's not clear whether that is helpful
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or not. */
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static char *unlink_on_exit;
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/* The list of long options. */
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static struct option long_options[] =
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{
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{ "debug", no_argument, 0, 'd' },
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{ "header-file", required_argument, 0, 'T' },
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{ "help", no_argument, 0, 'h' },
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{ "input-target", required_argument, 0, 'I' },
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{ "input-format", required_argument, 0, 'I' }, /* Obsolete */
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{ "linker", required_argument, 0, 'l' },
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{ "output-target", required_argument, 0, 'O' },
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{ "output-format", required_argument, 0, 'O' }, /* Obsolete */
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{ "version", no_argument, 0, 'V' },
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{ NULL, no_argument, 0, 0 }
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};
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/* Local routines. */
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static void show_help PARAMS ((void));
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static void show_usage PARAMS ((FILE *, int));
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static const char *select_output_format PARAMS ((enum bfd_architecture,
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unsigned long, boolean));
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static void setup_sections PARAMS ((bfd *, asection *, PTR));
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static void copy_sections PARAMS ((bfd *, asection *, PTR));
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static void mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
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long *, char *,
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bfd_size_type));
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static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
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long *, char *,
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bfd_size_type));
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static void alpha_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
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long *, char *,
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bfd_size_type));
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/* start-sanitize-powerpc-netware */
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static void powerpc_build_stubs PARAMS ((bfd *, bfd *, asymbol ***, long *));
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static void powerpc_resolve_stubs PARAMS ((bfd *, bfd *));
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static void powerpc_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
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long *, char *,
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bfd_size_type));
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/* end-sanitize-powerpc-netware */
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static void default_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
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long *, char *,
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bfd_size_type));
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static char *link_inputs PARAMS ((struct string_list *, char *));
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static const char *choose_temp_base_try PARAMS ((const char *,
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const char *));
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static void choose_temp_base PARAMS ((void));
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static int pexecute PARAMS ((char *, char *[]));
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/* The main routine. */
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int
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main (argc, argv)
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int argc;
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char **argv;
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{
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int opt;
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char *input_file = NULL;
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const char *input_format = NULL;
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const char *output_format = NULL;
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const char *header_file = NULL;
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char *ld_arg = NULL;
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Nlm_Internal_Fixed_Header fixed_hdr_struct;
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Nlm_Internal_Variable_Header var_hdr_struct;
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Nlm_Internal_Version_Header version_hdr_struct;
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Nlm_Internal_Copyright_Header copyright_hdr_struct;
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Nlm_Internal_Extended_Header extended_hdr_struct;
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bfd *inbfd;
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bfd *outbfd;
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asymbol **newsyms, **outsyms;
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long symcount, newsymalloc, newsymcount;
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long symsize;
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asection *text_sec, *bss_sec, *data_sec;
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bfd_vma vma;
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bfd_size_type align;
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asymbol *endsym;
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long i;
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char inlead, outlead;
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boolean gotstart, gotexit, gotcheck;
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struct stat st;
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FILE *custom_data, *help_data, *message_data, *rpc_data, *shared_data;
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size_t custom_size, help_size, message_size, module_size, rpc_size;
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asection *custom_section, *help_section, *message_section, *module_section;
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asection *rpc_section, *shared_section;
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bfd *sharedbfd;
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size_t shared_offset, shared_size;
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Nlm_Internal_Fixed_Header sharedhdr;
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int len;
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char *modname;
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char **matching;
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program_name = argv[0];
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xmalloc_set_program_name (program_name);
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bfd_init ();
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while ((opt = getopt_long (argc, argv, "dhI:l:O:T:V", long_options,
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(int *) NULL))
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!= EOF)
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{
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switch (opt)
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{
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case 'd':
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debug = 1;
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break;
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case 'h':
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show_help ();
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/*NOTREACHED*/
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case 'I':
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input_format = optarg;
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break;
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case 'l':
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ld_arg = optarg;
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break;
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case 'O':
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output_format = optarg;
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break;
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case 'T':
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header_file = optarg;
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break;
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case 'V':
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printf ("GNU %s version %s\n", program_name, program_version);
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exit (0);
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/*NOTREACHED*/
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case 0:
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break;
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default:
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show_usage (stderr, 1);
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/*NOTREACHED*/
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}
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}
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/* The input and output files may be named on the command line. */
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output_file = NULL;
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if (optind < argc)
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{
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input_file = argv[optind];
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++optind;
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if (optind < argc)
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{
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output_file = argv[optind];
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++optind;
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if (optind < argc)
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show_usage (stderr, 1);
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if (strcmp (input_file, output_file) == 0)
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{
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fprintf (stderr,
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"%s: input and output files must be different\n",
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program_name);
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exit (1);
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}
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}
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}
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/* Initialize the header information to default values. */
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fixed_hdr = &fixed_hdr_struct;
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memset ((PTR) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
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var_hdr = &var_hdr_struct;
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memset ((PTR) &var_hdr_struct, 0, sizeof var_hdr_struct);
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version_hdr = &version_hdr_struct;
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memset ((PTR) &version_hdr_struct, 0, sizeof version_hdr_struct);
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copyright_hdr = ©right_hdr_struct;
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memset ((PTR) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
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extended_hdr = &extended_hdr_struct;
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memset ((PTR) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
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check_procedure = NULL;
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custom_file = NULL;
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debug_info = false;
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exit_procedure = "_Stop";
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export_symbols = NULL;
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map_file = NULL;
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full_map = false;
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help_file = NULL;
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import_symbols = NULL;
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message_file = NULL;
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modules = NULL;
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sharelib_file = NULL;
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start_procedure = "_Prelude";
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verbose = false;
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rpc_file = NULL;
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parse_errors = 0;
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/* Parse the header file (if there is one). */
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if (header_file != NULL)
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{
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if (! nlmlex_file (header_file)
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|| yyparse () != 0
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|| parse_errors != 0)
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exit (1);
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}
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if (input_files != NULL)
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{
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if (input_file != NULL)
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{
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fprintf (stderr,
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"%s: input file named both on command line and with INPUT\n",
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program_name);
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exit (1);
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}
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if (input_files->next == NULL)
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input_file = input_files->string;
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else
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input_file = link_inputs (input_files, ld_arg);
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}
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else if (input_file == NULL)
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{
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fprintf (stderr, "%s: no input file\n", program_name);
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show_usage (stderr, 1);
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}
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inbfd = bfd_openr (input_file, input_format);
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if (inbfd == NULL)
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bfd_fatal (input_file);
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if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
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{
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bfd_nonfatal (input_file);
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if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
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{
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list_matching_formats (matching);
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free (matching);
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}
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exit (1);
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}
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if (output_format == NULL)
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output_format = select_output_format (bfd_get_arch (inbfd),
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bfd_get_mach (inbfd),
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inbfd->xvec->byteorder_big_p);
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assert (output_format != NULL);
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/* Use the output file named on the command line if it exists.
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Otherwise use the file named in the OUTPUT statement. */
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if (output_file == NULL)
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{
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fprintf (stderr, "%s: no name for output file\n",
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program_name);
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show_usage (stderr, 1);
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}
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outbfd = bfd_openw (output_file, output_format);
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if (outbfd == NULL)
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bfd_fatal (output_file);
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if (! bfd_set_format (outbfd, bfd_object))
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bfd_fatal (output_file);
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assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
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if (bfd_arch_get_compatible (inbfd, outbfd) == NULL)
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fprintf (stderr,
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"%s: warning:input and output formats are not compatible\n",
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program_name);
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/* Move the values read from the command file into outbfd. */
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*nlm_fixed_header (outbfd) = fixed_hdr_struct;
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*nlm_variable_header (outbfd) = var_hdr_struct;
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*nlm_version_header (outbfd) = version_hdr_struct;
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*nlm_copyright_header (outbfd) = copyright_hdr_struct;
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*nlm_extended_header (outbfd) = extended_hdr_struct;
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/* Start copying the input BFD to the output BFD. */
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if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
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bfd_fatal (bfd_get_filename (outbfd));
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symsize = bfd_get_symtab_upper_bound (inbfd);
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if (symsize < 0)
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bfd_fatal (input_file);
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symbols = (asymbol **) xmalloc (symsize);
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symcount = bfd_canonicalize_symtab (inbfd, symbols);
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if (symcount < 0)
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bfd_fatal (input_file);
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/* Make sure we have a .bss section. */
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bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
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if (bss_sec == NULL)
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{
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bss_sec = bfd_make_section (outbfd, NLM_UNINITIALIZED_DATA_NAME);
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if (bss_sec == NULL
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|| ! bfd_set_section_flags (outbfd, bss_sec, SEC_ALLOC)
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|| ! bfd_set_section_alignment (outbfd, bss_sec, 1))
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bfd_fatal ("make .bss section");
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}
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/* We store the original section names in the .nlmsections section,
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so that programs which understand it can resurrect the original
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sections from the NLM. We will put a pointer to .nlmsections in
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the NLM header area. */
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secsec = bfd_make_section (outbfd, ".nlmsections");
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if (secsec == NULL)
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bfd_fatal ("make .nlmsections section");
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if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS))
|
||
bfd_fatal ("set .nlmsections flags");
|
||
/* start-sanitize-powerpc-netware */
|
||
|
||
/* For PowerPC NetWare we need to build stubs for calls to undefined
|
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symbols. Because each stub requires an entry in the TOC section
|
||
which must be at the same location as other entries in the TOC
|
||
section, we must do this before determining where the TOC section
|
||
goes in setup_sections. */
|
||
if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
|
||
powerpc_build_stubs (inbfd, outbfd, &symbols, &symcount);
|
||
/* end-sanitize-powerpc-netware */
|
||
|
||
/* Set up the sections. */
|
||
bfd_map_over_sections (inbfd, setup_sections, (PTR) outbfd);
|
||
|
||
text_sec = bfd_get_section_by_name (outbfd, NLM_CODE_NAME);
|
||
|
||
/* The .bss section immediately follows the .data section. */
|
||
data_sec = bfd_get_section_by_name (outbfd, NLM_INITIALIZED_DATA_NAME);
|
||
if (data_sec != NULL)
|
||
{
|
||
bfd_size_type add;
|
||
|
||
vma = bfd_get_section_size_before_reloc (data_sec);
|
||
align = 1 << bss_sec->alignment_power;
|
||
add = ((vma + align - 1) &~ (align - 1)) - vma;
|
||
vma += add;
|
||
if (! bfd_set_section_vma (outbfd, bss_sec, vma))
|
||
bfd_fatal ("set .bss vma");
|
||
if (add != 0)
|
||
{
|
||
bfd_size_type data_size;
|
||
|
||
data_size = bfd_get_section_size_before_reloc (data_sec);
|
||
if (! bfd_set_section_size (outbfd, data_sec, data_size + add))
|
||
bfd_fatal ("set .data size");
|
||
}
|
||
}
|
||
|
||
/* Adjust symbol information. */
|
||
inlead = bfd_get_symbol_leading_char (inbfd);
|
||
outlead = bfd_get_symbol_leading_char (outbfd);
|
||
gotstart = false;
|
||
gotexit = false;
|
||
gotcheck = false;
|
||
newsymalloc = 10;
|
||
newsyms = (asymbol **) xmalloc (newsymalloc * sizeof (asymbol *));
|
||
newsymcount = 0;
|
||
endsym = NULL;
|
||
for (i = 0; i < symcount; i++)
|
||
{
|
||
register asymbol *sym;
|
||
|
||
sym = symbols[i];
|
||
|
||
/* Add or remove a leading underscore. */
|
||
if (inlead != outlead)
|
||
{
|
||
if (inlead != '\0')
|
||
{
|
||
if (bfd_asymbol_name (sym)[0] == inlead)
|
||
{
|
||
if (outlead == '\0')
|
||
++sym->name;
|
||
else
|
||
{
|
||
char *new;
|
||
|
||
new = xmalloc (strlen (bfd_asymbol_name (sym)) + 1);
|
||
new[0] = outlead;
|
||
strcpy (new + 1, bfd_asymbol_name (sym) + 1);
|
||
sym->name = new;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
char *new;
|
||
|
||
new = xmalloc (strlen (bfd_asymbol_name (sym)) + 2);
|
||
new[0] = outlead;
|
||
strcpy (new + 1, bfd_asymbol_name (sym));
|
||
sym->name = new;
|
||
}
|
||
}
|
||
|
||
/* NLM's have an uninitialized data section, but they do not
|
||
have a common section in the Unix sense. Move all common
|
||
symbols into the .bss section, and mark them as exported. */
|
||
if (bfd_is_com_section (bfd_get_section (sym)))
|
||
{
|
||
bfd_vma size;
|
||
|
||
sym->section = bss_sec;
|
||
size = sym->value;
|
||
sym->value = bss_sec->_raw_size;
|
||
bss_sec->_raw_size += size;
|
||
align = 1 << bss_sec->alignment_power;
|
||
bss_sec->_raw_size = (bss_sec->_raw_size + align - 1) &~ (align - 1);
|
||
sym->flags |= BSF_EXPORT | BSF_GLOBAL;
|
||
}
|
||
else if (bfd_get_section (sym)->output_section != NULL)
|
||
{
|
||
/* Move the symbol into the output section. */
|
||
sym->value += bfd_get_section (sym)->output_offset;
|
||
sym->section = bfd_get_section (sym)->output_section;
|
||
/* This is no longer a section symbol. */
|
||
sym->flags &=~ BSF_SECTION_SYM;
|
||
}
|
||
|
||
/* Force _edata and _end to be defined. This would normally be
|
||
done by the linker, but the manipulation of the common
|
||
symbols will confuse it. */
|
||
if ((sym->flags & BSF_DEBUGGING) == 0
|
||
&& bfd_asymbol_name (sym)[0] == '_'
|
||
&& bfd_get_section (sym) == &bfd_und_section)
|
||
{
|
||
if (strcmp (bfd_asymbol_name (sym), "_edata") == 0)
|
||
{
|
||
sym->section = bss_sec;
|
||
sym->value = 0;
|
||
}
|
||
if (strcmp (bfd_asymbol_name (sym), "_end") == 0)
|
||
{
|
||
sym->section = bss_sec;
|
||
endsym = sym;
|
||
}
|
||
/* start-sanitize-powerpc-netware */
|
||
/* For PowerPC NetWare, we define __GOT0. This is the start
|
||
of the .got section. */
|
||
if (bfd_get_arch (inbfd) == bfd_arch_powerpc
|
||
&& strcmp (bfd_asymbol_name (sym), "__GOT0") == 0)
|
||
{
|
||
asection *got_sec;
|
||
|
||
got_sec = bfd_get_section_by_name (inbfd, ".got");
|
||
assert (got_sec != (asection *) NULL);
|
||
sym->value = got_sec->output_offset;
|
||
sym->section = got_sec->output_section;
|
||
}
|
||
/* end-sanitize-powerpc-netware */
|
||
}
|
||
|
||
/* If this is a global symbol, check the export list. */
|
||
if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) != 0)
|
||
{
|
||
register struct string_list *l;
|
||
int found_simple;
|
||
|
||
/* Unfortunately, a symbol can appear multiple times on the
|
||
export list, with and without prefixes. */
|
||
found_simple = 0;
|
||
for (l = export_symbols; l != NULL; l = l->next)
|
||
{
|
||
if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
|
||
found_simple = 1;
|
||
else
|
||
{
|
||
char *zbase;
|
||
|
||
zbase = strchr (l->string, '@');
|
||
if (zbase != NULL
|
||
&& strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
|
||
{
|
||
/* We must add a symbol with this prefix. */
|
||
if (newsymcount >= newsymalloc)
|
||
{
|
||
newsymalloc += 10;
|
||
newsyms = ((asymbol **)
|
||
xrealloc ((PTR) newsyms,
|
||
(newsymalloc
|
||
* sizeof (asymbol *))));
|
||
}
|
||
newsyms[newsymcount] =
|
||
(asymbol *) xmalloc (sizeof (asymbol));
|
||
*newsyms[newsymcount] = *sym;
|
||
newsyms[newsymcount]->name = l->string;
|
||
++newsymcount;
|
||
}
|
||
}
|
||
}
|
||
if (! found_simple)
|
||
{
|
||
/* The unmodified symbol is actually not exported at
|
||
all. */
|
||
sym->flags &=~ (BSF_GLOBAL | BSF_EXPORT);
|
||
sym->flags |= BSF_LOCAL;
|
||
}
|
||
}
|
||
|
||
/* If it's an undefined symbol, see if it's on the import list.
|
||
Change the prefix if necessary. */
|
||
if (bfd_get_section (sym) == &bfd_und_section)
|
||
{
|
||
register struct string_list *l;
|
||
|
||
for (l = import_symbols; l != NULL; l = l->next)
|
||
{
|
||
if (strcmp (l->string, bfd_asymbol_name (sym)) == 0)
|
||
break;
|
||
else
|
||
{
|
||
char *zbase;
|
||
|
||
zbase = strchr (l->string, '@');
|
||
if (zbase != NULL
|
||
&& strcmp (zbase + 1, bfd_asymbol_name (sym)) == 0)
|
||
{
|
||
sym->name = l->string;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (l == NULL)
|
||
fprintf (stderr,
|
||
"%s: warning: symbol %s imported but not in import list\n",
|
||
program_name, bfd_asymbol_name (sym));
|
||
}
|
||
|
||
/* See if it's one of the special named symbols. */
|
||
if ((sym->flags & BSF_DEBUGGING) == 0)
|
||
{
|
||
bfd_vma val;
|
||
|
||
/* FIXME: If these symbols are not in the .text section, we
|
||
add the .text section size to the value. This may not be
|
||
correct for all targets. I'm not sure how this should
|
||
really be handled. */
|
||
if (strcmp (bfd_asymbol_name (sym), start_procedure) == 0)
|
||
{
|
||
val = bfd_asymbol_value (sym);
|
||
if (bfd_get_section (sym) == data_sec
|
||
&& text_sec != (asection *) NULL)
|
||
val += bfd_section_size (outbfd, text_sec);
|
||
if (! bfd_set_start_address (outbfd, val))
|
||
bfd_fatal ("set start address");
|
||
gotstart = true;
|
||
}
|
||
if (strcmp (bfd_asymbol_name (sym), exit_procedure) == 0)
|
||
{
|
||
val = bfd_asymbol_value (sym);
|
||
if (bfd_get_section (sym) == data_sec
|
||
&& text_sec != (asection *) NULL)
|
||
val += bfd_section_size (outbfd, text_sec);
|
||
nlm_fixed_header (outbfd)->exitProcedureOffset = val;
|
||
gotexit = true;
|
||
}
|
||
if (check_procedure != NULL
|
||
&& strcmp (bfd_asymbol_name (sym), check_procedure) == 0)
|
||
{
|
||
val = bfd_asymbol_value (sym);
|
||
if (bfd_get_section (sym) == data_sec
|
||
&& text_sec != (asection *) NULL)
|
||
val += bfd_section_size (outbfd, text_sec);
|
||
nlm_fixed_header (outbfd)->checkUnloadProcedureOffset = val;
|
||
gotcheck = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (endsym != NULL)
|
||
{
|
||
endsym->value = bfd_get_section_size_before_reloc (bss_sec);
|
||
|
||
/* FIXME: If any relocs referring to _end use inplace addends,
|
||
then I think they need to be updated. This is handled by
|
||
i386_mangle_relocs. Is it needed for any other object
|
||
formats? */
|
||
}
|
||
|
||
if (newsymcount == 0)
|
||
outsyms = symbols;
|
||
else
|
||
{
|
||
outsyms = (asymbol **) xmalloc ((symcount + newsymcount + 1)
|
||
* sizeof (asymbol *));
|
||
memcpy (outsyms, symbols, symcount * sizeof (asymbol *));
|
||
memcpy (outsyms + symcount, newsyms, newsymcount * sizeof (asymbol *));
|
||
outsyms[symcount + newsymcount] = NULL;
|
||
}
|
||
|
||
bfd_set_symtab (outbfd, outsyms, symcount + newsymcount);
|
||
|
||
if (! gotstart)
|
||
fprintf (stderr, "%s: warning: START procedure %s not defined\n",
|
||
program_name, start_procedure);
|
||
if (! gotexit)
|
||
fprintf (stderr, "%s: warning: EXIT procedure %s not defined\n",
|
||
program_name, exit_procedure);
|
||
if (check_procedure != NULL
|
||
&& ! gotcheck)
|
||
fprintf (stderr, "%s: warning: CHECK procedure %s not defined\n",
|
||
program_name, check_procedure);
|
||
|
||
/* Add additional sections required for the header information. */
|
||
if (custom_file != NULL)
|
||
{
|
||
custom_data = fopen (custom_file, "r");
|
||
if (custom_data == NULL
|
||
|| fstat (fileno (custom_data), &st) < 0)
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, custom_file,
|
||
strerror (errno));
|
||
custom_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
custom_size = st.st_size;
|
||
custom_section = bfd_make_section (outbfd, ".nlmcustom");
|
||
if (custom_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, custom_section, custom_size)
|
||
|| ! bfd_set_section_flags (outbfd, custom_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("custom section");
|
||
}
|
||
}
|
||
if (help_file != NULL)
|
||
{
|
||
help_data = fopen (help_file, "r");
|
||
if (help_data == NULL
|
||
|| fstat (fileno (help_data), &st) < 0)
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, help_file,
|
||
strerror (errno));
|
||
help_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
help_size = st.st_size;
|
||
help_section = bfd_make_section (outbfd, ".nlmhelp");
|
||
if (help_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, help_section, help_size)
|
||
|| ! bfd_set_section_flags (outbfd, help_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("help section");
|
||
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
|
||
}
|
||
}
|
||
if (message_file != NULL)
|
||
{
|
||
message_data = fopen (message_file, "r");
|
||
if (message_data == NULL
|
||
|| fstat (fileno (message_data), &st) < 0)
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, message_file,
|
||
strerror (errno));
|
||
message_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
message_size = st.st_size;
|
||
message_section = bfd_make_section (outbfd, ".nlmmessages");
|
||
if (message_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, message_section, message_size)
|
||
|| ! bfd_set_section_flags (outbfd, message_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("message section");
|
||
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
|
||
}
|
||
}
|
||
if (modules != NULL)
|
||
{
|
||
struct string_list *l;
|
||
|
||
module_size = 0;
|
||
for (l = modules; l != NULL; l = l->next)
|
||
module_size += strlen (l->string) + 1;
|
||
module_section = bfd_make_section (outbfd, ".nlmmodules");
|
||
if (module_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, module_section, module_size)
|
||
|| ! bfd_set_section_flags (outbfd, module_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("module section");
|
||
}
|
||
if (rpc_file != NULL)
|
||
{
|
||
rpc_data = fopen (rpc_file, "r");
|
||
if (rpc_data == NULL
|
||
|| fstat (fileno (rpc_data), &st) < 0)
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, rpc_file,
|
||
strerror (errno));
|
||
rpc_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
rpc_size = st.st_size;
|
||
rpc_section = bfd_make_section (outbfd, ".nlmrpc");
|
||
if (rpc_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, rpc_section, rpc_size)
|
||
|| ! bfd_set_section_flags (outbfd, rpc_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("rpc section");
|
||
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
|
||
}
|
||
}
|
||
if (sharelib_file != NULL)
|
||
{
|
||
sharedbfd = bfd_openr (sharelib_file, output_format);
|
||
if (sharedbfd == NULL
|
||
|| ! bfd_check_format (sharedbfd, bfd_object))
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
|
||
bfd_errmsg (bfd_get_error ()));
|
||
sharelib_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
sharedhdr = *nlm_fixed_header (sharedbfd);
|
||
bfd_close (sharedbfd);
|
||
shared_data = fopen (sharelib_file, "r");
|
||
if (shared_data == NULL
|
||
|| (fstat (fileno (shared_data), &st) < 0))
|
||
{
|
||
fprintf (stderr, "%s:%s: %s\n", program_name, sharelib_file,
|
||
strerror (errno));
|
||
sharelib_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* If we were clever, we could just copy out the
|
||
sections of the shared library which we actually
|
||
need. However, we would have to figure out the sizes
|
||
of the external and public information, and that can
|
||
not be done without reading through them. */
|
||
if (sharedhdr.uninitializedDataSize > 0)
|
||
{
|
||
/* There is no place to record this information. */
|
||
fprintf (stderr,
|
||
"%s:%s: warning: shared libraries can not have uninitialized data\n",
|
||
program_name, sharelib_file);
|
||
}
|
||
shared_offset = st.st_size;
|
||
if (shared_offset > sharedhdr.codeImageOffset)
|
||
shared_offset = sharedhdr.codeImageOffset;
|
||
if (shared_offset > sharedhdr.dataImageOffset)
|
||
shared_offset = sharedhdr.dataImageOffset;
|
||
if (shared_offset > sharedhdr.relocationFixupOffset)
|
||
shared_offset = sharedhdr.relocationFixupOffset;
|
||
if (shared_offset > sharedhdr.externalReferencesOffset)
|
||
shared_offset = sharedhdr.externalReferencesOffset;
|
||
if (shared_offset > sharedhdr.publicsOffset)
|
||
shared_offset = sharedhdr.publicsOffset;
|
||
shared_size = st.st_size - shared_offset;
|
||
shared_section = bfd_make_section (outbfd, ".nlmshared");
|
||
if (shared_section == NULL
|
||
|| ! bfd_set_section_size (outbfd, shared_section,
|
||
shared_size)
|
||
|| ! bfd_set_section_flags (outbfd, shared_section,
|
||
SEC_HAS_CONTENTS))
|
||
bfd_fatal ("shared section");
|
||
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Check whether a version was given. */
|
||
if (strncmp (version_hdr->stamp, "VeRsIoN#", 8) != 0)
|
||
fprintf (stderr, "%s: warning: No version number given\n",
|
||
program_name);
|
||
|
||
/* At least for now, always create an extended header, because that
|
||
is what NLMLINK does. */
|
||
strncpy (nlm_extended_header (outbfd)->stamp, "MeSsAgEs", 8);
|
||
|
||
strncpy (nlm_cygnus_ext_header (outbfd)->stamp, "CyGnUsEx", 8);
|
||
|
||
/* If the date was not given, force it in. */
|
||
if (nlm_version_header (outbfd)->month == 0
|
||
&& nlm_version_header (outbfd)->day == 0
|
||
&& nlm_version_header (outbfd)->year == 0)
|
||
{
|
||
time_t now;
|
||
struct tm *ptm;
|
||
|
||
time (&now);
|
||
ptm = localtime (&now);
|
||
nlm_version_header (outbfd)->month = ptm->tm_mon + 1;
|
||
nlm_version_header (outbfd)->day = ptm->tm_mday;
|
||
nlm_version_header (outbfd)->year = ptm->tm_year + 1900;
|
||
strncpy (version_hdr->stamp, "VeRsIoN#", 8);
|
||
}
|
||
/* start-sanitize-powerpc-netware */
|
||
|
||
/* Resolve the stubs we build for PowerPC NetWare. */
|
||
if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
|
||
powerpc_resolve_stubs (inbfd, outbfd);
|
||
/* end-sanitize-powerpc-netware */
|
||
|
||
/* Copy over the sections. */
|
||
bfd_map_over_sections (inbfd, copy_sections, (PTR) outbfd);
|
||
|
||
/* Finish up the header information. */
|
||
if (custom_file != NULL)
|
||
{
|
||
PTR data;
|
||
|
||
data = xmalloc (custom_size);
|
||
if (fread (data, 1, custom_size, custom_data) != custom_size)
|
||
fprintf (stderr, "%s:%s: read: %s\n", program_name, custom_file,
|
||
strerror (errno));
|
||
else
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, custom_section, data,
|
||
(file_ptr) 0, custom_size))
|
||
bfd_fatal ("custom section");
|
||
nlm_fixed_header (outbfd)->customDataOffset =
|
||
custom_section->filepos;
|
||
nlm_fixed_header (outbfd)->customDataSize = custom_size;
|
||
}
|
||
free (data);
|
||
}
|
||
if (! debug_info)
|
||
{
|
||
/* As a special hack, the backend recognizes a debugInfoOffset
|
||
of -1 to mean that it should not output any debugging
|
||
information. This can not be handling by fiddling with the
|
||
symbol table because exported symbols appear in both the
|
||
export information and the debugging information. */
|
||
nlm_fixed_header (outbfd)->debugInfoOffset = (file_ptr) -1;
|
||
}
|
||
if (map_file != NULL)
|
||
fprintf (stderr,
|
||
"%s: warning: MAP and FULLMAP are not supported; try ld -M\n",
|
||
program_name);
|
||
if (help_file != NULL)
|
||
{
|
||
PTR data;
|
||
|
||
data = xmalloc (help_size);
|
||
if (fread (data, 1, help_size, help_data) != help_size)
|
||
fprintf (stderr, "%s:%s: read: %s\n", program_name, help_file,
|
||
strerror (errno));
|
||
else
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, help_section, data,
|
||
(file_ptr) 0, help_size))
|
||
bfd_fatal ("help section");
|
||
nlm_extended_header (outbfd)->helpFileOffset =
|
||
help_section->filepos;
|
||
nlm_extended_header (outbfd)->helpFileLength = help_size;
|
||
}
|
||
free (data);
|
||
}
|
||
if (message_file != NULL)
|
||
{
|
||
PTR data;
|
||
|
||
data = xmalloc (message_size);
|
||
if (fread (data, 1, message_size, message_data) != message_size)
|
||
fprintf (stderr, "%s:%s: read: %s\n", program_name, message_file,
|
||
strerror (errno));
|
||
else
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, message_section, data,
|
||
(file_ptr) 0, message_size))
|
||
bfd_fatal ("message section");
|
||
nlm_extended_header (outbfd)->messageFileOffset =
|
||
message_section->filepos;
|
||
nlm_extended_header (outbfd)->messageFileLength = message_size;
|
||
|
||
/* FIXME: Are these offsets correct on all platforms? Are
|
||
they 32 bits on all platforms? What endianness? */
|
||
nlm_extended_header (outbfd)->languageID =
|
||
bfd_h_get_32 (outbfd, (bfd_byte *) data + 106);
|
||
nlm_extended_header (outbfd)->messageCount =
|
||
bfd_h_get_32 (outbfd, (bfd_byte *) data + 110);
|
||
}
|
||
free (data);
|
||
}
|
||
if (modules != NULL)
|
||
{
|
||
PTR data;
|
||
unsigned char *set;
|
||
struct string_list *l;
|
||
bfd_size_type c;
|
||
|
||
data = xmalloc (module_size);
|
||
c = 0;
|
||
set = (unsigned char *) data;
|
||
for (l = modules; l != NULL; l = l->next)
|
||
{
|
||
*set = strlen (l->string);
|
||
strncpy (set + 1, l->string, *set);
|
||
set += *set + 1;
|
||
++c;
|
||
}
|
||
if (! bfd_set_section_contents (outbfd, module_section, data,
|
||
(file_ptr) 0, module_size))
|
||
bfd_fatal ("module section");
|
||
nlm_fixed_header (outbfd)->moduleDependencyOffset =
|
||
module_section->filepos;
|
||
nlm_fixed_header (outbfd)->numberOfModuleDependencies = c;
|
||
}
|
||
if (rpc_file != NULL)
|
||
{
|
||
PTR data;
|
||
|
||
data = xmalloc (rpc_size);
|
||
if (fread (data, 1, rpc_size, rpc_data) != rpc_size)
|
||
fprintf (stderr, "%s:%s: read: %s\n", program_name, rpc_file,
|
||
strerror (errno));
|
||
else
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, rpc_section, data,
|
||
(file_ptr) 0, rpc_size))
|
||
bfd_fatal ("rpc section");
|
||
nlm_extended_header (outbfd)->RPCDataOffset =
|
||
rpc_section->filepos;
|
||
nlm_extended_header (outbfd)->RPCDataLength = rpc_size;
|
||
}
|
||
free (data);
|
||
}
|
||
if (sharelib_file != NULL)
|
||
{
|
||
PTR data;
|
||
|
||
data = xmalloc (shared_size);
|
||
if (fseek (shared_data, shared_offset, SEEK_SET) != 0
|
||
|| fread (data, 1, shared_size, shared_data) != shared_size)
|
||
fprintf (stderr, "%s:%s: read: %s\n", program_name, sharelib_file,
|
||
strerror (errno));
|
||
else
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, shared_section, data,
|
||
(file_ptr) 0, shared_size))
|
||
bfd_fatal ("shared section");
|
||
}
|
||
nlm_extended_header (outbfd)->sharedCodeOffset =
|
||
sharedhdr.codeImageOffset - shared_offset + shared_section->filepos;
|
||
nlm_extended_header (outbfd)->sharedCodeLength =
|
||
sharedhdr.codeImageSize;
|
||
nlm_extended_header (outbfd)->sharedDataOffset =
|
||
sharedhdr.dataImageOffset - shared_offset + shared_section->filepos;
|
||
nlm_extended_header (outbfd)->sharedDataLength =
|
||
sharedhdr.dataImageSize;
|
||
nlm_extended_header (outbfd)->sharedRelocationFixupOffset =
|
||
(sharedhdr.relocationFixupOffset
|
||
- shared_offset
|
||
+ shared_section->filepos);
|
||
nlm_extended_header (outbfd)->sharedRelocationFixupCount =
|
||
sharedhdr.numberOfRelocationFixups;
|
||
nlm_extended_header (outbfd)->sharedExternalReferenceOffset =
|
||
(sharedhdr.externalReferencesOffset
|
||
- shared_offset
|
||
+ shared_section->filepos);
|
||
nlm_extended_header (outbfd)->sharedExternalReferenceCount =
|
||
sharedhdr.numberOfExternalReferences;
|
||
nlm_extended_header (outbfd)->sharedPublicsOffset =
|
||
sharedhdr.publicsOffset - shared_offset + shared_section->filepos;
|
||
nlm_extended_header (outbfd)->sharedPublicsCount =
|
||
sharedhdr.numberOfPublics;
|
||
nlm_extended_header (outbfd)->sharedDebugRecordOffset =
|
||
sharedhdr.debugInfoOffset - shared_offset + shared_section->filepos;
|
||
nlm_extended_header (outbfd)->sharedDebugRecordCount =
|
||
sharedhdr.numberOfDebugRecords;
|
||
nlm_extended_header (outbfd)->SharedInitializationOffset =
|
||
sharedhdr.codeStartOffset;
|
||
nlm_extended_header (outbfd)->SharedExitProcedureOffset =
|
||
sharedhdr.exitProcedureOffset;
|
||
free (data);
|
||
}
|
||
len = strlen (output_file);
|
||
if (len > NLM_MODULE_NAME_SIZE - 2)
|
||
len = NLM_MODULE_NAME_SIZE - 2;
|
||
nlm_fixed_header (outbfd)->moduleName[0] = len;
|
||
|
||
strncpy (nlm_fixed_header (outbfd)->moduleName + 1, output_file,
|
||
NLM_MODULE_NAME_SIZE - 2);
|
||
nlm_fixed_header (outbfd)->moduleName[NLM_MODULE_NAME_SIZE - 1] = '\0';
|
||
for (modname = nlm_fixed_header (outbfd)->moduleName;
|
||
*modname != '\0';
|
||
modname++)
|
||
if (islower (*modname))
|
||
*modname = toupper (*modname);
|
||
|
||
strncpy (nlm_variable_header (outbfd)->oldThreadName, " LONG",
|
||
NLM_OLD_THREAD_NAME_LENGTH);
|
||
|
||
nlm_cygnus_ext_header (outbfd)->offset = secsec->filepos;
|
||
nlm_cygnus_ext_header (outbfd)->length = bfd_section_size (outbfd, secsec);
|
||
|
||
if (! bfd_close (outbfd))
|
||
bfd_fatal (output_file);
|
||
if (! bfd_close (inbfd))
|
||
bfd_fatal (input_file);
|
||
|
||
if (unlink_on_exit != NULL)
|
||
unlink (unlink_on_exit);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Display a help message and exit. */
|
||
|
||
static void
|
||
show_help ()
|
||
{
|
||
printf ("%s: Convert an object file into a NetWare Loadable Module\n",
|
||
program_name);
|
||
show_usage (stdout, 0);
|
||
}
|
||
|
||
/* Show a usage message and exit. */
|
||
|
||
static void
|
||
show_usage (file, status)
|
||
FILE *file;
|
||
int status;
|
||
{
|
||
fprintf (file, "\
|
||
Usage: %s [-dhV] [-I bfdname] [-O bfdname] [-T header-file] [-l linker]\n\
|
||
[--input-target=bfdname] [--output-target=bfdname]\n\
|
||
[--header-file=file] [--linker=linker] [--debug]\n\
|
||
[--help] [--version]\n\
|
||
[in-file [out-file]]\n",
|
||
program_name);
|
||
exit (status);
|
||
}
|
||
|
||
/* Select the output format based on the input architecture, machine,
|
||
and endianness. This chooses the appropriate NLM target. */
|
||
|
||
static const char *
|
||
select_output_format (arch, mach, bigendian)
|
||
enum bfd_architecture arch;
|
||
unsigned long mach;
|
||
boolean bigendian;
|
||
{
|
||
switch (arch)
|
||
{
|
||
case bfd_arch_i386:
|
||
return "nlm32-i386";
|
||
case bfd_arch_sparc:
|
||
return "nlm32-sparc";
|
||
case bfd_arch_alpha:
|
||
return "nlm32-alpha";
|
||
/* start-sanitize-powerpc-netware */
|
||
case bfd_arch_powerpc:
|
||
return "nlm32-powerpc";
|
||
/* end-sanitize-powerpc-netware */
|
||
default:
|
||
fprintf (stderr, "%s: no default NLM format for %s\n",
|
||
program_name, bfd_printable_arch_mach (arch, mach));
|
||
exit (1);
|
||
/* Avoid warning. */
|
||
return NULL;
|
||
}
|
||
/*NOTREACHED*/
|
||
}
|
||
|
||
/* The BFD sections are copied in two passes. This function selects
|
||
the output section for each input section, and sets up the section
|
||
name, size, etc. */
|
||
|
||
static void
|
||
setup_sections (inbfd, insec, data_ptr)
|
||
bfd *inbfd;
|
||
asection *insec;
|
||
PTR data_ptr;
|
||
{
|
||
bfd *outbfd = (bfd *) data_ptr;
|
||
flagword f;
|
||
const char *outname;
|
||
asection *outsec;
|
||
bfd_vma offset;
|
||
bfd_size_type align;
|
||
bfd_size_type add;
|
||
bfd_size_type secsecsize;
|
||
|
||
f = bfd_get_section_flags (inbfd, insec);
|
||
if (f & SEC_CODE)
|
||
outname = NLM_CODE_NAME;
|
||
else if ((f & SEC_LOAD) && (f & SEC_HAS_CONTENTS))
|
||
outname = NLM_INITIALIZED_DATA_NAME;
|
||
else if (f & SEC_ALLOC)
|
||
outname = NLM_UNINITIALIZED_DATA_NAME;
|
||
else
|
||
outname = bfd_section_name (inbfd, insec);
|
||
|
||
outsec = bfd_get_section_by_name (outbfd, outname);
|
||
if (outsec == NULL)
|
||
{
|
||
outsec = bfd_make_section (outbfd, outname);
|
||
if (outsec == NULL)
|
||
bfd_fatal ("make section");
|
||
}
|
||
|
||
insec->output_section = outsec;
|
||
|
||
offset = bfd_section_size (outbfd, outsec);
|
||
align = 1 << bfd_section_alignment (inbfd, insec);
|
||
add = ((offset + align - 1) &~ (align - 1)) - offset;
|
||
insec->output_offset = offset + add;
|
||
|
||
if (! bfd_set_section_size (outbfd, outsec,
|
||
(bfd_section_size (outbfd, outsec)
|
||
+ bfd_section_size (inbfd, insec)
|
||
+ add)))
|
||
bfd_fatal ("set section size");
|
||
|
||
if ((bfd_section_alignment (inbfd, insec)
|
||
> bfd_section_alignment (outbfd, outsec))
|
||
&& ! bfd_set_section_alignment (outbfd, outsec,
|
||
bfd_section_alignment (inbfd, insec)))
|
||
bfd_fatal ("set section alignment");
|
||
|
||
if (! bfd_set_section_flags (outbfd, outsec, f))
|
||
bfd_fatal ("set section flags");
|
||
|
||
bfd_set_reloc (outbfd, outsec, (arelent **) NULL, 0);
|
||
|
||
/* For each input section we allocate space for an entry in
|
||
.nlmsections. */
|
||
secsecsize = bfd_section_size (outbfd, secsec);
|
||
secsecsize += strlen (bfd_section_name (inbfd, insec)) + 1;
|
||
secsecsize = (secsecsize + 3) &~ 3;
|
||
secsecsize += 8;
|
||
if (! bfd_set_section_size (outbfd, secsec, secsecsize))
|
||
bfd_fatal ("set .nlmsections size");
|
||
}
|
||
|
||
/* Copy the section contents. */
|
||
|
||
static void
|
||
copy_sections (inbfd, insec, data_ptr)
|
||
bfd *inbfd;
|
||
asection *insec;
|
||
PTR data_ptr;
|
||
{
|
||
static bfd_size_type secsecoff = 0;
|
||
bfd *outbfd = (bfd *) data_ptr;
|
||
const char *inname;
|
||
asection *outsec;
|
||
bfd_size_type size;
|
||
PTR contents;
|
||
long reloc_size;
|
||
bfd_byte buf[4];
|
||
bfd_size_type add;
|
||
|
||
inname = bfd_section_name (inbfd, insec);
|
||
|
||
outsec = insec->output_section;
|
||
assert (outsec != NULL);
|
||
|
||
size = bfd_get_section_size_before_reloc (insec);
|
||
|
||
/* FIXME: Why are these necessary? */
|
||
insec->_cooked_size = insec->_raw_size;
|
||
insec->reloc_done = true;
|
||
|
||
if ((bfd_get_section_flags (inbfd, insec) & SEC_HAS_CONTENTS) == 0)
|
||
contents = NULL;
|
||
else
|
||
{
|
||
contents = xmalloc (size);
|
||
if (! bfd_get_section_contents (inbfd, insec, contents,
|
||
(file_ptr) 0, size))
|
||
bfd_fatal (bfd_get_filename (inbfd));
|
||
}
|
||
|
||
reloc_size = bfd_get_reloc_upper_bound (inbfd, insec);
|
||
if (reloc_size < 0)
|
||
bfd_fatal (bfd_get_filename (inbfd));
|
||
if (reloc_size != 0)
|
||
{
|
||
arelent **relocs;
|
||
long reloc_count;
|
||
|
||
relocs = (arelent **) xmalloc (reloc_size);
|
||
reloc_count = bfd_canonicalize_reloc (inbfd, insec, relocs, symbols);
|
||
if (reloc_count < 0)
|
||
bfd_fatal (bfd_get_filename (inbfd));
|
||
mangle_relocs (outbfd, insec, &relocs, &reloc_count, (char *) contents,
|
||
size);
|
||
|
||
/* FIXME: refers to internal BFD fields. */
|
||
if (outsec->orelocation != (arelent **) NULL)
|
||
{
|
||
bfd_size_type total_count;
|
||
arelent **combined;
|
||
|
||
total_count = reloc_count + outsec->reloc_count;
|
||
combined = (arelent **) xmalloc (total_count * sizeof (arelent));
|
||
memcpy (combined, outsec->orelocation,
|
||
outsec->reloc_count * sizeof (arelent));
|
||
memcpy (combined + outsec->reloc_count, relocs,
|
||
(size_t) (reloc_count * sizeof (arelent)));
|
||
free (outsec->orelocation);
|
||
reloc_count = total_count;
|
||
relocs = combined;
|
||
}
|
||
|
||
bfd_set_reloc (outbfd, outsec, relocs, reloc_count);
|
||
}
|
||
|
||
if (contents != NULL)
|
||
{
|
||
if (! bfd_set_section_contents (outbfd, outsec, contents,
|
||
insec->output_offset, size))
|
||
bfd_fatal (bfd_get_filename (outbfd));
|
||
free (contents);
|
||
}
|
||
|
||
/* Add this section to .nlmsections. */
|
||
if (! bfd_set_section_contents (outbfd, secsec, (PTR) inname, secsecoff,
|
||
strlen (inname) + 1))
|
||
bfd_fatal ("set .nlmsection contents");
|
||
secsecoff += strlen (inname) + 1;
|
||
|
||
add = ((secsecoff + 3) &~ 3) - secsecoff;
|
||
if (add != 0)
|
||
{
|
||
bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
|
||
if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, add))
|
||
bfd_fatal ("set .nlmsection contents");
|
||
secsecoff += add;
|
||
}
|
||
|
||
if (contents != NULL)
|
||
bfd_h_put_32 (outbfd, (bfd_vma) outsec->filepos, buf);
|
||
else
|
||
bfd_h_put_32 (outbfd, (bfd_vma) 0, buf);
|
||
if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
|
||
bfd_fatal ("set .nlmsection contents");
|
||
secsecoff += 4;
|
||
|
||
bfd_h_put_32 (outbfd, (bfd_vma) size, buf);
|
||
if (! bfd_set_section_contents (outbfd, secsec, buf, secsecoff, 4))
|
||
bfd_fatal ("set .nlmsection contents");
|
||
secsecoff += 4;
|
||
}
|
||
|
||
/* Some, perhaps all, NetWare targets require changing the relocs used
|
||
by the input formats. */
|
||
|
||
static void
|
||
mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
|
||
contents_size)
|
||
bfd *outbfd;
|
||
asection *insec;
|
||
arelent ***relocs_ptr;
|
||
long *reloc_count_ptr;
|
||
char *contents;
|
||
bfd_size_type contents_size;
|
||
{
|
||
switch (bfd_get_arch (outbfd))
|
||
{
|
||
case bfd_arch_i386:
|
||
i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
|
||
contents, contents_size);
|
||
break;
|
||
case bfd_arch_alpha:
|
||
alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
|
||
contents, contents_size);
|
||
break;
|
||
/* start-sanitize-powerpc-netware */
|
||
case bfd_arch_powerpc:
|
||
powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
|
||
contents, contents_size);
|
||
break;
|
||
/* end-sanitize-powerpc-netware */
|
||
default:
|
||
default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
|
||
contents, contents_size);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* By default all we need to do for relocs is change the address by
|
||
the output_offset. */
|
||
|
||
/*ARGSUSED*/
|
||
static void
|
||
default_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
|
||
contents_size)
|
||
bfd *outbfd;
|
||
asection *insec;
|
||
arelent ***relocs_ptr;
|
||
long *reloc_count_ptr;
|
||
char *contents;
|
||
bfd_size_type contents_size;
|
||
{
|
||
if (insec->output_offset != 0)
|
||
{
|
||
long reloc_count;
|
||
register arelent **relocs;
|
||
register long i;
|
||
|
||
reloc_count = *reloc_count_ptr;
|
||
relocs = *relocs_ptr;
|
||
for (i = 0; i < reloc_count; i++, relocs++)
|
||
(*relocs)->address += insec->output_offset;
|
||
}
|
||
}
|
||
|
||
/* NetWare on the i386 supports a restricted set of relocs, which are
|
||
different from those used on other i386 targets. This routine
|
||
converts the relocs. It is, obviously, very target dependent. At
|
||
the moment, the nlm32-i386 backend performs similar translations;
|
||
however, it is more reliable and efficient to do them here. */
|
||
|
||
static reloc_howto_type nlm_i386_pcrel_howto =
|
||
HOWTO (1, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"DISP32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true); /* pcrel_offset */
|
||
|
||
static void
|
||
i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
|
||
contents_size)
|
||
bfd *outbfd;
|
||
asection *insec;
|
||
arelent ***relocs_ptr;
|
||
long *reloc_count_ptr;
|
||
char *contents;
|
||
bfd_size_type contents_size;
|
||
{
|
||
long reloc_count, i;
|
||
arelent **relocs;
|
||
|
||
reloc_count = *reloc_count_ptr;
|
||
relocs = *relocs_ptr;
|
||
for (i = 0; i < reloc_count; i++)
|
||
{
|
||
arelent *rel;
|
||
asymbol *sym;
|
||
bfd_size_type address;
|
||
bfd_vma addend;
|
||
|
||
rel = *relocs++;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
/* We're moving the relocs from the input section to the output
|
||
section, so we must adjust the address accordingly. */
|
||
address = rel->address;
|
||
rel->address += insec->output_offset;
|
||
|
||
/* Note that no serious harm will ensue if we fail to change a
|
||
reloc. The backend will fail when writing out the reloc. */
|
||
|
||
/* Make sure this reloc is within the data we have. We use only
|
||
4 byte relocs here, so we insist on having 4 bytes. */
|
||
if (address + 4 > contents_size)
|
||
continue;
|
||
|
||
/* A PC relative reloc entirely within a single section is
|
||
completely unnecessary. This can be generated by ld -r. */
|
||
if (sym == insec->symbol
|
||
&& rel->howto != NULL
|
||
&& rel->howto->pc_relative
|
||
&& ! rel->howto->pcrel_offset)
|
||
{
|
||
--*reloc_count_ptr;
|
||
--relocs;
|
||
memmove (relocs, relocs + 1,
|
||
(size_t) ((reloc_count - i) * sizeof (arelent *)));
|
||
continue;
|
||
}
|
||
|
||
/* Get the amount the relocation will add in. */
|
||
addend = rel->addend + sym->value;
|
||
|
||
/* NetWare doesn't support PC relative relocs against defined
|
||
symbols, so we have to eliminate them by doing the relocation
|
||
now. We can only do this if the reloc is within a single
|
||
section. */
|
||
if (rel->howto != NULL
|
||
&& rel->howto->pc_relative
|
||
&& bfd_get_section (sym) == insec->output_section)
|
||
{
|
||
bfd_vma val;
|
||
|
||
if (rel->howto->pcrel_offset)
|
||
addend -= address;
|
||
|
||
val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
|
||
val += addend;
|
||
bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
|
||
|
||
--*reloc_count_ptr;
|
||
--relocs;
|
||
memmove (relocs, relocs + 1,
|
||
(size_t) ((reloc_count - i) * sizeof (arelent *)));
|
||
continue;
|
||
}
|
||
|
||
/* NetWare doesn't support reloc addends, so we get rid of them
|
||
here by simply adding them into the object data. We handle
|
||
the symbol value, if any, the same way. */
|
||
if (addend != 0
|
||
&& rel->howto != NULL
|
||
&& rel->howto->rightshift == 0
|
||
&& rel->howto->size == 2
|
||
&& rel->howto->bitsize == 32
|
||
&& rel->howto->bitpos == 0
|
||
&& rel->howto->src_mask == 0xffffffff
|
||
&& rel->howto->dst_mask == 0xffffffff)
|
||
{
|
||
bfd_vma val;
|
||
|
||
val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
|
||
val += addend;
|
||
bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
|
||
|
||
/* Adjust the reloc for the changes we just made. */
|
||
rel->addend = 0;
|
||
if (bfd_get_section (sym) != &bfd_und_section)
|
||
rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
|
||
}
|
||
|
||
/* NetWare uses a reloc with pcrel_offset set. We adjust
|
||
pc_relative relocs accordingly. We are going to change the
|
||
howto field, so we can only do this if the current one is
|
||
compatible. We should check that special_function is NULL
|
||
here, but at the moment coff-i386 uses a special_function
|
||
which does not affect what we are doing here. */
|
||
if (rel->howto != NULL
|
||
&& rel->howto->pc_relative
|
||
&& ! rel->howto->pcrel_offset
|
||
&& rel->howto->rightshift == 0
|
||
&& rel->howto->size == 2
|
||
&& rel->howto->bitsize == 32
|
||
&& rel->howto->bitpos == 0
|
||
&& rel->howto->src_mask == 0xffffffff
|
||
&& rel->howto->dst_mask == 0xffffffff)
|
||
{
|
||
bfd_vma val;
|
||
|
||
/* When pcrel_offset is not set, it means that the negative
|
||
of the address of the memory location is stored in the
|
||
memory location. We must add it back in. */
|
||
val = bfd_get_32 (outbfd, (bfd_byte *) contents + address);
|
||
val += address;
|
||
bfd_put_32 (outbfd, val, (bfd_byte *) contents + address);
|
||
|
||
/* We must change to a new howto. */
|
||
rel->howto = &nlm_i386_pcrel_howto;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* On the Alpha the first reloc for every section must be a special
|
||
relocs which hold the GP address. Also, the first reloc in the
|
||
file must be a special reloc which holds the address of the .lita
|
||
section. */
|
||
|
||
static reloc_howto_type nlm32_alpha_nw_howto =
|
||
HOWTO (ALPHA_R_NW_RELOC, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"NW_RELOC", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false); /* pcrel_offset */
|
||
|
||
/*ARGSUSED*/
|
||
static void
|
||
alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
|
||
contents_size)
|
||
bfd *outbfd;
|
||
asection *insec;
|
||
register arelent ***relocs_ptr;
|
||
long *reloc_count_ptr;
|
||
char *contents;
|
||
bfd_size_type contents_size;
|
||
{
|
||
long old_reloc_count;
|
||
arelent **old_relocs;
|
||
register arelent **relocs;
|
||
|
||
old_reloc_count = *reloc_count_ptr;
|
||
old_relocs = *relocs_ptr;
|
||
relocs = (arelent **) xmalloc ((old_reloc_count + 3) * sizeof (arelent *));
|
||
*relocs_ptr = relocs;
|
||
|
||
if (nlm_alpha_backend_data (outbfd)->lita_address == 0)
|
||
{
|
||
bfd *inbfd;
|
||
asection *lita_section;
|
||
|
||
inbfd = insec->owner;
|
||
lita_section = bfd_get_section_by_name (inbfd, _LITA);
|
||
if (lita_section != (asection *) NULL)
|
||
{
|
||
nlm_alpha_backend_data (outbfd)->lita_address =
|
||
bfd_get_section_vma (inbfd, lita_section);
|
||
nlm_alpha_backend_data (outbfd)->lita_size =
|
||
bfd_section_size (inbfd, lita_section);
|
||
}
|
||
else
|
||
{
|
||
/* Avoid outputting this reloc again. */
|
||
nlm_alpha_backend_data (outbfd)->lita_address = 4;
|
||
}
|
||
|
||
*relocs = (arelent *) xmalloc (sizeof (arelent));
|
||
(*relocs)->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
|
||
(*relocs)->address = nlm_alpha_backend_data (outbfd)->lita_address;
|
||
(*relocs)->addend = nlm_alpha_backend_data (outbfd)->lita_size + 1;
|
||
(*relocs)->howto = &nlm32_alpha_nw_howto;
|
||
++relocs;
|
||
++(*reloc_count_ptr);
|
||
}
|
||
|
||
/* Get the GP value from bfd. */
|
||
if (nlm_alpha_backend_data (outbfd)->gp == 0)
|
||
nlm_alpha_backend_data (outbfd)->gp =
|
||
bfd_ecoff_get_gp_value (insec->owner);
|
||
|
||
*relocs = (arelent *) xmalloc (sizeof (arelent));
|
||
(*relocs)->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
|
||
(*relocs)->address = nlm_alpha_backend_data (outbfd)->gp;
|
||
(*relocs)->addend = 0;
|
||
(*relocs)->howto = &nlm32_alpha_nw_howto;
|
||
++relocs;
|
||
++(*reloc_count_ptr);
|
||
|
||
memcpy ((PTR) relocs, (PTR) old_relocs,
|
||
(size_t) old_reloc_count * sizeof (arelent *));
|
||
relocs[old_reloc_count] = (arelent *) NULL;
|
||
|
||
free (old_relocs);
|
||
|
||
if (insec->output_offset != 0)
|
||
{
|
||
register bfd_size_type i;
|
||
|
||
for (i = 0; i < old_reloc_count; i++, relocs++)
|
||
(*relocs)->address += insec->output_offset;
|
||
}
|
||
}
|
||
/* start-sanitize-powerpc-netware */
|
||
|
||
/* We keep a linked list of stubs which we must build. Because BFD
|
||
requires us to know the sizes of all sections before we can set the
|
||
contents of any, we must figure out which stubs we want to build
|
||
before we can actually build any of them. */
|
||
|
||
struct powerpc_stub
|
||
{
|
||
/* Next stub in linked list. */
|
||
struct powerpc_stub *next;
|
||
|
||
/* Symbol whose value is the start of the stub. This is a symbol
|
||
whose name begins with `.'. */
|
||
asymbol *start;
|
||
|
||
/* Symbol we are going to create a reloc against. This is a symbol
|
||
with the same name as START but without the leading `.'. */
|
||
asymbol *reloc;
|
||
|
||
/* The TOC index for this stub. This is the index into the TOC
|
||
section at which the reloc is created. */
|
||
unsigned int toc_index;
|
||
};
|
||
|
||
/* The linked list of stubs. */
|
||
|
||
static struct powerpc_stub *powerpc_stubs;
|
||
|
||
/* This is what a stub looks like. The first instruction will get
|
||
adjusted with the correct TOC index. */
|
||
|
||
static unsigned long powerpc_stub_insns[] =
|
||
{
|
||
0x81820000, /* lwz r12,0(r2) */
|
||
0x90410014, /* stw r2,20(r1) */
|
||
0x800c0000, /* lwz r0,0(r12) */
|
||
0x804c0004, /* lwz r2,r(r12) */
|
||
0x7c0903a6, /* mtctr r0 */
|
||
0x4e800420, /* bctr */
|
||
0, /* Traceback table. */
|
||
0xc8000,
|
||
0
|
||
};
|
||
|
||
#define POWERPC_STUB_INSN_COUNT \
|
||
(sizeof powerpc_stub_insns / sizeof powerpc_stub_insns[0])
|
||
|
||
#define POWERPC_STUB_SIZE (4 * POWERPC_STUB_INSN_COUNT)
|
||
|
||
/* Each stub uses a four byte TOC entry. */
|
||
#define POWERPC_STUB_TOC_ENTRY_SIZE (4)
|
||
|
||
/* The original size of the .got section. */
|
||
static bfd_size_type powerpc_initial_got_size;
|
||
|
||
/* Look for all undefined symbols beginning with `.', and prepare to
|
||
build a stub for each one. */
|
||
|
||
static void
|
||
powerpc_build_stubs (inbfd, outbfd, symbols_ptr, symcount_ptr)
|
||
bfd *inbfd;
|
||
bfd *outbfd;
|
||
asymbol ***symbols_ptr;
|
||
long *symcount_ptr;
|
||
{
|
||
asection *stub_sec;
|
||
asection *got_sec;
|
||
unsigned int got_base;
|
||
long i;
|
||
long symcount;
|
||
long stubcount;
|
||
|
||
/* Make a section to hold stubs. We don't set SEC_HAS_CONTENTS for
|
||
the section to prevent copy_sections from reading from it. */
|
||
stub_sec = bfd_make_section (inbfd, ".stubs");
|
||
if (stub_sec == (asection *) NULL
|
||
|| ! bfd_set_section_flags (inbfd, stub_sec,
|
||
(SEC_CODE
|
||
| SEC_RELOC
|
||
| SEC_ALLOC
|
||
| SEC_LOAD))
|
||
|| ! bfd_set_section_alignment (inbfd, stub_sec, 2))
|
||
bfd_fatal (".stubs");
|
||
|
||
/* Get the TOC section, which is named .got. */
|
||
got_sec = bfd_get_section_by_name (inbfd, ".got");
|
||
if (got_sec == (asection *) NULL)
|
||
{
|
||
got_sec = bfd_make_section (inbfd, ".got");
|
||
if (got_sec == (asection *) NULL
|
||
|| ! bfd_set_section_flags (inbfd, got_sec,
|
||
(SEC_DATA
|
||
| SEC_RELOC
|
||
| SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS))
|
||
|| ! bfd_set_section_alignment (inbfd, got_sec, 2))
|
||
bfd_fatal (".got");
|
||
}
|
||
|
||
powerpc_initial_got_size = bfd_section_size (inbfd, got_sec);
|
||
got_base = powerpc_initial_got_size;
|
||
got_base = (got_base + 3) &~ 3;
|
||
|
||
stubcount = 0;
|
||
|
||
symcount = *symcount_ptr;
|
||
for (i = 0; i < symcount; i++)
|
||
{
|
||
asymbol *sym;
|
||
asymbol *newsym;
|
||
char *newname;
|
||
struct powerpc_stub *item;
|
||
|
||
sym = (*symbols_ptr)[i];
|
||
|
||
/* We must make a stub for every undefined symbol whose name
|
||
starts with '.'. */
|
||
if (bfd_asymbol_name (sym)[0] != '.'
|
||
|| bfd_get_section (sym) != &bfd_und_section)
|
||
continue;
|
||
|
||
/* Make a new undefined symbol with the same name but without
|
||
the leading `.'. */
|
||
newsym = (asymbol *) xmalloc (sizeof (asymbol));
|
||
*newsym = *sym;
|
||
newname = (char *) xmalloc (strlen (bfd_asymbol_name (sym)));
|
||
strcpy (newname, bfd_asymbol_name (sym) + 1);
|
||
newsym->name = newname;
|
||
|
||
/* Define the `.' symbol to be in the stub section. */
|
||
sym->section = stub_sec;
|
||
sym->value = stubcount * POWERPC_STUB_SIZE;
|
||
/* We set the BSF_DYNAMIC flag here so that we can check it when
|
||
we are mangling relocs. FIXME: This is a hack. */
|
||
sym->flags = BSF_LOCAL | BSF_DYNAMIC;
|
||
|
||
/* Add this stub to the linked list. */
|
||
item = (struct powerpc_stub *) xmalloc (sizeof (struct powerpc_stub));
|
||
item->start = sym;
|
||
item->reloc = newsym;
|
||
item->toc_index = got_base + stubcount * POWERPC_STUB_TOC_ENTRY_SIZE;
|
||
|
||
item->next = powerpc_stubs;
|
||
powerpc_stubs = item;
|
||
|
||
++stubcount;
|
||
}
|
||
|
||
if (stubcount > 0)
|
||
{
|
||
asymbol **s;
|
||
struct powerpc_stub *l;
|
||
|
||
/* Add the new symbols we just created to the symbol table. */
|
||
*symbols_ptr = (asymbol **) xrealloc ((char *) *symbols_ptr,
|
||
((symcount + stubcount)
|
||
* sizeof (asymbol)));
|
||
*symcount_ptr += stubcount;
|
||
s = &(*symbols_ptr)[symcount];
|
||
for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
|
||
*s++ = l->reloc;
|
||
|
||
/* Set the size of the .stubs section and increase the size of
|
||
the .got section. */
|
||
if (! bfd_set_section_size (inbfd, stub_sec,
|
||
stubcount * POWERPC_STUB_SIZE)
|
||
|| ! bfd_set_section_size (inbfd, got_sec,
|
||
(got_base
|
||
+ (stubcount
|
||
* POWERPC_STUB_TOC_ENTRY_SIZE))))
|
||
bfd_fatal ("stub section sizes");
|
||
}
|
||
|
||
/* PowerPC NetWare requires a custom header. We create it here.
|
||
The first word is the header version number, currently 1. The
|
||
second word is the timestamp of the input file. */
|
||
memcpy (nlm_custom_header (outbfd)->stamp, "CuStHeAd", 8);
|
||
nlm_custom_header (outbfd)->dataLength = 8;
|
||
nlm_custom_header (outbfd)->data = xmalloc (8);
|
||
bfd_h_put_32 (outbfd, (bfd_vma) 1,
|
||
(bfd_byte *) nlm_custom_header (outbfd)->data);
|
||
{
|
||
struct stat s;
|
||
|
||
if (stat (bfd_get_filename (inbfd), &s) < 0)
|
||
s.st_mtime = 0;
|
||
bfd_h_put_32 (outbfd, (bfd_vma) s.st_mtime,
|
||
(bfd_byte *) nlm_custom_header (outbfd)->data + 4);
|
||
}
|
||
}
|
||
|
||
/* Resolve all the stubs for PowerPC NetWare. We fill in the contents
|
||
of the output section, and create new relocs in the TOC. */
|
||
|
||
static void
|
||
powerpc_resolve_stubs (inbfd, outbfd)
|
||
bfd *inbfd;
|
||
bfd *outbfd;
|
||
{
|
||
bfd_byte buf[POWERPC_STUB_SIZE];
|
||
unsigned int i;
|
||
unsigned int stubcount;
|
||
arelent **relocs;
|
||
asection *got_sec;
|
||
arelent **r;
|
||
struct powerpc_stub *l;
|
||
|
||
if (powerpc_stubs == (struct powerpc_stub *) NULL)
|
||
return;
|
||
|
||
for (i = 0; i < POWERPC_STUB_INSN_COUNT; i++)
|
||
bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[i], buf + i * 4);
|
||
|
||
got_sec = bfd_get_section_by_name (inbfd, ".got");
|
||
assert (got_sec != (asection *) NULL);
|
||
assert (got_sec->output_section->orelocation == (arelent **) NULL);
|
||
|
||
stubcount = 0;
|
||
for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
|
||
++stubcount;
|
||
relocs = (arelent **) xmalloc (stubcount * sizeof (arelent *));
|
||
|
||
r = relocs;
|
||
for (l = powerpc_stubs; l != (struct powerpc_stub *) NULL; l = l->next)
|
||
{
|
||
arelent *reloc;
|
||
|
||
/* Adjust the first instruction to use the right TOC index. */
|
||
bfd_put_32 (outbfd, (bfd_vma) powerpc_stub_insns[0] + l->toc_index, buf);
|
||
|
||
/* Write this stub out. */
|
||
if (! bfd_set_section_contents (outbfd,
|
||
bfd_get_section (l->start),
|
||
buf,
|
||
l->start->value,
|
||
POWERPC_STUB_SIZE))
|
||
bfd_fatal ("writing stub");
|
||
|
||
/* Create a new reloc for the TOC entry. */
|
||
reloc = (arelent *) xmalloc (sizeof (arelent));
|
||
reloc->sym_ptr_ptr = &l->reloc;
|
||
reloc->address = l->toc_index + got_sec->output_offset;
|
||
reloc->addend = 0;
|
||
reloc->howto = bfd_reloc_type_lookup (inbfd, BFD_RELOC_32);
|
||
|
||
*r++ = reloc;
|
||
}
|
||
|
||
bfd_set_reloc (outbfd, got_sec->output_section, relocs, stubcount);
|
||
}
|
||
|
||
/* Adjust relocation entries for PowerPC NetWare. We do not output
|
||
TOC relocations. The object code already contains the offset from
|
||
the TOC pointer. When the function is called, the TOC register,
|
||
r2, will be set to the correct TOC value, so there is no need for
|
||
any further reloc. */
|
||
|
||
/*ARGSUSED*/
|
||
static void
|
||
powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr, contents,
|
||
contents_size)
|
||
bfd *outbfd;
|
||
asection *insec;
|
||
register arelent ***relocs_ptr;
|
||
long *reloc_count_ptr;
|
||
char *contents;
|
||
bfd_size_type contents_size;
|
||
{
|
||
const reloc_howto_type *toc_howto;
|
||
long reloc_count;
|
||
register arelent **relocs;
|
||
register long i;
|
||
|
||
toc_howto = bfd_reloc_type_lookup (insec->owner, BFD_RELOC_PPC_TOC16);
|
||
if (toc_howto == (reloc_howto_type *) NULL)
|
||
abort ();
|
||
|
||
/* If this is the .got section, clear out all the contents beyond
|
||
the initial size. We must do this here because copy_sections is
|
||
going to write out whatever we return in the contents field. */
|
||
if (strcmp (bfd_get_section_name (insec->owner, insec), ".got") == 0)
|
||
memset (contents + powerpc_initial_got_size, 0,
|
||
(bfd_get_section_size_after_reloc (insec)
|
||
- powerpc_initial_got_size));
|
||
|
||
reloc_count = *reloc_count_ptr;
|
||
relocs = *relocs_ptr;
|
||
for (i = 0; i < reloc_count; i++)
|
||
{
|
||
arelent *rel;
|
||
asymbol *sym;
|
||
bfd_vma symvalue;
|
||
|
||
rel = *relocs++;
|
||
sym = *rel->sym_ptr_ptr;
|
||
|
||
/* We must be able to resolve all PC relative relocs at this
|
||
point. If we get a branch to an undefined symbol we build a
|
||
stub, since NetWare will resolve undefined symbols into a
|
||
pointer to a function descriptor. */
|
||
if (rel->howto->pc_relative)
|
||
{
|
||
/* This check for whether a symbol is in the same section as
|
||
the reloc will be wrong if there is a PC relative reloc
|
||
between two sections both of which were placed in the
|
||
same output section. This should not happen. */
|
||
if (bfd_get_section (sym) != insec->output_section)
|
||
fprintf (stderr, "%s: unresolved PC relative reloc against %s\n",
|
||
program_name, bfd_asymbol_name (sym));
|
||
else
|
||
{
|
||
bfd_vma val;
|
||
|
||
assert (rel->howto->size == 2 && rel->howto->pcrel_offset);
|
||
val = bfd_get_32 (outbfd, (bfd_byte *) contents + rel->address);
|
||
val = ((val &~ rel->howto->dst_mask)
|
||
| (((val & rel->howto->src_mask)
|
||
+ (sym->value - rel->address)
|
||
+ rel->addend)
|
||
& rel->howto->dst_mask));
|
||
bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
|
||
|
||
/* If this reloc is against an stubbed symbol and the
|
||
next instruction is
|
||
cror 31,31,31
|
||
then we replace the next instruction with
|
||
lwz r2,20(r1)
|
||
This reloads the TOC pointer after a stub call. */
|
||
if (bfd_asymbol_name (sym)[0] == '.'
|
||
&& (sym->flags & BSF_DYNAMIC) != 0
|
||
&& (bfd_get_32 (outbfd,
|
||
(bfd_byte *) contents + rel->address + 4)
|
||
== 0x4ffffb82)) /* cror 31,31,31 */
|
||
bfd_put_32 (outbfd, (bfd_vma) 0x80410014, /* lwz r2,20(r1) */
|
||
(bfd_byte *) contents + rel->address + 4);
|
||
|
||
--*reloc_count_ptr;
|
||
--relocs;
|
||
memmove (relocs, relocs + 1,
|
||
(size_t) ((reloc_count - 1) * sizeof (arelent *)));
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* When considering a TOC reloc, we do not want to include the
|
||
symbol value. The symbol will be start of the TOC section
|
||
(which is named .got). We do want to include the addend. */
|
||
if (rel->howto == toc_howto)
|
||
symvalue = 0;
|
||
else
|
||
symvalue = sym->value;
|
||
|
||
/* If this is a relocation against a symbol with a value, or
|
||
there is a reloc addend, we need to update the addend in the
|
||
object file. */
|
||
if (symvalue + rel->addend != 0)
|
||
{
|
||
bfd_vma val;
|
||
|
||
switch (rel->howto->size)
|
||
{
|
||
case 1:
|
||
val = bfd_get_16 (outbfd,
|
||
(bfd_byte *) contents + rel->address);
|
||
val = ((val &~ rel->howto->dst_mask)
|
||
| (((val & rel->howto->src_mask)
|
||
+ symvalue
|
||
+ rel->addend)
|
||
& rel->howto->dst_mask));
|
||
if ((bfd_signed_vma) val < - 0x8000
|
||
|| (bfd_signed_vma) val >= 0x8000)
|
||
fprintf (stderr,
|
||
"%s: overflow when adjusting relocation against %s\n",
|
||
program_name, bfd_asymbol_name (sym));
|
||
bfd_put_16 (outbfd, val, (bfd_byte *) contents + rel->address);
|
||
break;
|
||
|
||
case 2:
|
||
val = bfd_get_32 (outbfd,
|
||
(bfd_byte *) contents + rel->address);
|
||
val = ((val &~ rel->howto->dst_mask)
|
||
| (((val & rel->howto->src_mask)
|
||
+ symvalue
|
||
+ rel->addend)
|
||
& rel->howto->dst_mask));
|
||
bfd_put_32 (outbfd, val, (bfd_byte *) contents + rel->address);
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
rel->sym_ptr_ptr = bfd_get_section (sym)->symbol_ptr_ptr;
|
||
rel->addend = 0;
|
||
}
|
||
|
||
/* Now that we have incorporated the addend, remove any TOC
|
||
relocs. */
|
||
if (rel->howto == toc_howto)
|
||
{
|
||
--*reloc_count_ptr;
|
||
--relocs;
|
||
memmove (relocs, relocs + 1,
|
||
(size_t) ((reloc_count - i) * sizeof (arelent *)));
|
||
continue;
|
||
}
|
||
|
||
rel->address += insec->output_offset;
|
||
}
|
||
}
|
||
/* end-sanitize-powerpc-netware */
|
||
|
||
/* Name of linker. */
|
||
#ifndef LD_NAME
|
||
#define LD_NAME "ld"
|
||
#endif
|
||
|
||
/* Temporary file name base. */
|
||
static char *temp_filename;
|
||
|
||
/* The user has specified several input files. Invoke the linker to
|
||
link them all together, and convert and delete the resulting output
|
||
file. */
|
||
|
||
static char *
|
||
link_inputs (inputs, ld)
|
||
struct string_list *inputs;
|
||
char *ld;
|
||
{
|
||
size_t c;
|
||
struct string_list *q;
|
||
char **argv;
|
||
size_t i;
|
||
int pid;
|
||
int status;
|
||
|
||
c = 0;
|
||
for (q = inputs; q != NULL; q = q->next)
|
||
++c;
|
||
|
||
argv = (char **) alloca (c + 5);
|
||
|
||
#ifndef __MSDOS__
|
||
if (ld == NULL)
|
||
{
|
||
char *p;
|
||
|
||
/* Find the linker to invoke based on how nlmconv was run. */
|
||
p = program_name + strlen (program_name);
|
||
while (p != program_name)
|
||
{
|
||
if (p[-1] == '/')
|
||
{
|
||
ld = (char *) xmalloc (p - program_name + strlen (LD_NAME) + 1);
|
||
memcpy (ld, program_name, p - program_name);
|
||
strcpy (ld + (p - program_name), LD_NAME);
|
||
break;
|
||
}
|
||
--p;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
if (ld == NULL)
|
||
ld = (char *) LD_NAME;
|
||
|
||
choose_temp_base ();
|
||
|
||
unlink_on_exit = xmalloc (strlen (temp_filename) + 3);
|
||
sprintf (unlink_on_exit, "%s.O", temp_filename);
|
||
|
||
argv[0] = ld;
|
||
argv[1] = (char *) "-r";
|
||
argv[2] = (char *) "-o";
|
||
argv[3] = unlink_on_exit;
|
||
i = 4;
|
||
for (q = inputs; q != NULL; q = q->next, i++)
|
||
argv[i] = q->string;
|
||
argv[i] = NULL;
|
||
|
||
if (debug)
|
||
{
|
||
for (i = 0; argv[i] != NULL; i++)
|
||
fprintf (stderr, " %s", argv[i]);
|
||
fprintf (stderr, "\n");
|
||
}
|
||
|
||
pid = pexecute (ld, argv);
|
||
|
||
if (waitpid (pid, &status, 0) < 0)
|
||
{
|
||
perror ("waitpid");
|
||
unlink (unlink_on_exit);
|
||
exit (1);
|
||
}
|
||
|
||
if (status != 0)
|
||
{
|
||
fprintf (stderr, "%s: Execution of %s failed\n", program_name, ld);
|
||
unlink (unlink_on_exit);
|
||
exit (1);
|
||
}
|
||
|
||
return unlink_on_exit;
|
||
}
|
||
|
||
/* Choose a temporary file name. Stolen from gcc.c. */
|
||
|
||
static const char *
|
||
choose_temp_base_try (try, base)
|
||
const char *try;
|
||
const char *base;
|
||
{
|
||
const char *rv;
|
||
|
||
if (base)
|
||
rv = base;
|
||
else if (try == NULL)
|
||
rv = NULL;
|
||
else if (access (try, R_OK | W_OK) != 0)
|
||
rv = NULL;
|
||
else
|
||
rv = try;
|
||
return rv;
|
||
}
|
||
|
||
static void
|
||
choose_temp_base ()
|
||
{
|
||
const char *base = NULL;
|
||
int len;
|
||
|
||
base = choose_temp_base_try (getenv ("TMPDIR"), base);
|
||
base = choose_temp_base_try (getenv ("TMP"), base);
|
||
base = choose_temp_base_try (getenv ("TEMP"), base);
|
||
|
||
#ifdef P_tmpdir
|
||
base = choose_temp_base_try (P_tmpdir, base);
|
||
#endif
|
||
|
||
base = choose_temp_base_try ("/usr/tmp", base);
|
||
base = choose_temp_base_try ("/tmp", base);
|
||
|
||
/* If all else fails, use the current directory! */
|
||
if (base == NULL)
|
||
base = "./";
|
||
|
||
len = strlen (base);
|
||
temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1);
|
||
strcpy (temp_filename, base);
|
||
if (len > 0 && temp_filename[len-1] != '/')
|
||
temp_filename[len++] = '/';
|
||
strcpy (temp_filename + len, "ccXXXXXX");
|
||
|
||
mktemp (temp_filename);
|
||
if (*temp_filename == '\0')
|
||
abort ();
|
||
}
|
||
|
||
/* Execute a job. Stolen from gcc.c. */
|
||
|
||
#ifndef OS2
|
||
#ifdef __MSDOS__
|
||
|
||
static int
|
||
pexecute (program, argv)
|
||
char *program;
|
||
char *argv[];
|
||
{
|
||
char *scmd, *rf;
|
||
FILE *argfile;
|
||
int i;
|
||
|
||
scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 10);
|
||
rf = scmd + strlen(program) + 2 + el;
|
||
sprintf (scmd, "%s.exe @%s.gp", program, temp_filename);
|
||
argfile = fopen (rf, "w");
|
||
if (argfile == 0)
|
||
pfatal_with_name (rf);
|
||
|
||
for (i=1; argv[i]; i++)
|
||
{
|
||
char *cp;
|
||
for (cp = argv[i]; *cp; cp++)
|
||
{
|
||
if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
|
||
fputc ('\\', argfile);
|
||
fputc (*cp, argfile);
|
||
}
|
||
fputc ('\n', argfile);
|
||
}
|
||
fclose (argfile);
|
||
|
||
i = system (scmd);
|
||
|
||
remove (rf);
|
||
|
||
if (i == -1)
|
||
{
|
||
perror (program);
|
||
return MIN_FATAL_STATUS << 8;
|
||
}
|
||
|
||
return i << 8;
|
||
}
|
||
|
||
#else /* not __MSDOS__ */
|
||
|
||
static int
|
||
pexecute (program, argv)
|
||
char *program;
|
||
char *argv[];
|
||
{
|
||
int pid;
|
||
int retries, sleep_interval;
|
||
|
||
/* Fork a subprocess; wait and retry if it fails. */
|
||
sleep_interval = 1;
|
||
for (retries = 0; retries < 4; retries++)
|
||
{
|
||
pid = vfork ();
|
||
if (pid >= 0)
|
||
break;
|
||
sleep (sleep_interval);
|
||
sleep_interval *= 2;
|
||
}
|
||
|
||
switch (pid)
|
||
{
|
||
case -1:
|
||
#ifdef vfork
|
||
perror ("fork");
|
||
#else
|
||
perror ("vfork");
|
||
#endif
|
||
exit (1);
|
||
/* NOTREACHED */
|
||
return 0;
|
||
|
||
case 0: /* child */
|
||
/* Exec the program. */
|
||
execvp (program, argv);
|
||
perror (program);
|
||
exit (1);
|
||
/* NOTREACHED */
|
||
return 0;
|
||
|
||
default:
|
||
/* Return child's process number. */
|
||
return pid;
|
||
}
|
||
}
|
||
|
||
#endif /* not __MSDOS__ */
|
||
#else /* not OS2 */
|
||
|
||
static int
|
||
pexecute (program, argv)
|
||
char *program;
|
||
char *argv[];
|
||
{
|
||
return spawnvp (1, program, argv);
|
||
}
|
||
#endif /* not OS2 */
|