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- /* nlmconv.c -- NLM conversion program
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- This file is part of GNU Binutils.
-
- 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. */
-
- /* Written by Ian Lance Taylor <ian@cygnus.com>.
-
- This program can be used to convert any appropriate object file
- into a NetWare Loadable Module (an NLM). It will accept a linker
- specification file which is identical to that accepted by the
- NetWare linker, NLMLINK, except that the INPUT command, normally
- used to give a list of object files to link together, is not used.
- This program will convert only a single object file. */
-
- #include <ansidecl.h>
- #include <stdio.h>
- #include <time.h>
- #include <ctype.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/file.h>
- #include <assert.h>
- #include <getopt.h>
- #include "bfd.h"
- #include "libiberty.h"
- #include "sysdep.h"
- #include "bucomm.h"
- /* Internal BFD NLM header. */
- #include "libnlm.h"
- #include "nlmconv.h"
-
- #ifdef NLMCONV_ALPHA
- #include "coff/sym.h"
- #include "coff/ecoff.h"
- #endif
-
- /* If strerror is just a macro, we want to use the one from libiberty
- since it will handle undefined values. */
- #undef strerror
- extern char *strerror ();
-
- #ifndef localtime
- extern struct tm *localtime ();
- #endif
-
- #ifndef getenv
- extern char *getenv ();
- #endif
-
- #ifndef SEEK_SET
- #define SEEK_SET 0
- #endif
-
- #ifndef R_OK
- #define R_OK 4
- #define W_OK 2
- #define X_OK 1
- #endif
-
- /* Global variables. */
-
- /* The name used to invoke the program. */
- char *program_name;
-
- /* The version number. */
- extern char *program_version;
-
- /* Local variables. */
-
- /* Whether to print out debugging information (currently just controls
- whether it prints the linker command if there is one). */
- static int debug;
-
- /* The symbol table. */
- static asymbol **symbols;
-
- /* A section we create in the output file to hold pointers to where
- the sections of the input file end up. We will put a pointer to
- this section in the NLM header. These is an entry for each input
- section. The format is
- null terminated section name
- zeroes to adjust to 4 byte boundary
- 4 byte section data file pointer
- 4 byte section size
- We don't need a version number. The way we find this information
- is by finding a stamp in the NLM header information. If we need to
- change the format of this information, we can simply change the
- stamp. */
- static asection *secsec;
-
- /* A temporary file name to be unlinked on exit. Actually, for most
- errors, we leave it around. It's not clear whether that is helpful
- or not. */
- static char *unlink_on_exit;
-
- /* The list of long options. */
- static struct option long_options[] =
- {
- { "debug", no_argument, 0, 'd' },
- { "header-file", required_argument, 0, 'T' },
- { "help", no_argument, 0, 'h' },
- { "input-target", required_argument, 0, 'I' },
- { "input-format", required_argument, 0, 'I' }, /* Obsolete */
- { "linker", required_argument, 0, 'l' },
- { "output-target", required_argument, 0, 'O' },
- { "output-format", required_argument, 0, 'O' }, /* Obsolete */
- { "version", no_argument, 0, 'V' },
- { NULL, no_argument, 0, 0 }
- };
-
- /* Local routines. */
-
- static void show_help PARAMS ((void));
- static void show_usage PARAMS ((FILE *, int));
- static const char *select_output_format PARAMS ((enum bfd_architecture,
- unsigned long, boolean));
- static void setup_sections PARAMS ((bfd *, asection *, PTR));
- static void copy_sections PARAMS ((bfd *, asection *, PTR));
- static void mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
- long *, char *,
- bfd_size_type));
- static void default_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
- long *, char *,
- bfd_size_type));
- static char *link_inputs PARAMS ((struct string_list *, char *));
- static const char *choose_temp_base_try PARAMS ((const char *,
- const char *));
- static void choose_temp_base PARAMS ((void));
- static int pexecute PARAMS ((char *, char *[]));
-
- #ifdef NLMCONV_I386
- static void i386_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
- long *, char *,
- bfd_size_type));
- #endif
-
- #ifdef NLMCONV_ALPHA
- static void alpha_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
- long *, char *,
- bfd_size_type));
- #endif
-
- #ifdef NLMCONV_POWERPC
- static void powerpc_build_stubs PARAMS ((bfd *, bfd *, asymbol ***, long *));
- static void powerpc_resolve_stubs PARAMS ((bfd *, bfd *));
- static void powerpc_mangle_relocs PARAMS ((bfd *, asection *, arelent ***,
- long *, char *,
- bfd_size_type));
- #endif
-
- /* The main routine. */
-
- int
- main (argc, argv)
- int argc;
- char **argv;
- {
- int opt;
- char *input_file = NULL;
- const char *input_format = NULL;
- const char *output_format = NULL;
- const char *header_file = NULL;
- char *ld_arg = NULL;
- Nlm_Internal_Fixed_Header fixed_hdr_struct;
- Nlm_Internal_Variable_Header var_hdr_struct;
- Nlm_Internal_Version_Header version_hdr_struct;
- Nlm_Internal_Copyright_Header copyright_hdr_struct;
- Nlm_Internal_Extended_Header extended_hdr_struct;
- bfd *inbfd;
- bfd *outbfd;
- asymbol **newsyms, **outsyms;
- long symcount, newsymalloc, newsymcount;
- long symsize;
- asection *text_sec, *bss_sec, *data_sec;
- bfd_vma vma;
- bfd_size_type align;
- asymbol *endsym;
- long i;
- char inlead, outlead;
- boolean gotstart, gotexit, gotcheck;
- struct stat st;
- FILE *custom_data, *help_data, *message_data, *rpc_data, *shared_data;
- size_t custom_size, help_size, message_size, module_size, rpc_size;
- asection *custom_section, *help_section, *message_section, *module_section;
- asection *rpc_section, *shared_section;
- bfd *sharedbfd;
- size_t shared_offset, shared_size;
- Nlm_Internal_Fixed_Header sharedhdr;
- int len;
- char *modname;
- char **matching;
-
- program_name = argv[0];
- xmalloc_set_program_name (program_name);
-
- bfd_init ();
-
- while ((opt = getopt_long (argc, argv, "dhI:l:O:T:V", long_options,
- (int *) NULL))
- != EOF)
- {
- switch (opt)
- {
- case 'd':
- debug = 1;
- break;
- case 'h':
- show_help ();
- /*NOTREACHED*/
- case 'I':
- input_format = optarg;
- break;
- case 'l':
- ld_arg = optarg;
- break;
- case 'O':
- output_format = optarg;
- break;
- case 'T':
- header_file = optarg;
- break;
- case 'V':
- printf ("GNU %s version %s\n", program_name, program_version);
- exit (0);
- /*NOTREACHED*/
- case 0:
- break;
- default:
- show_usage (stderr, 1);
- /*NOTREACHED*/
- }
- }
-
- /* The input and output files may be named on the command line. */
- output_file = NULL;
- if (optind < argc)
- {
- input_file = argv[optind];
- ++optind;
- if (optind < argc)
- {
- output_file = argv[optind];
- ++optind;
- if (optind < argc)
- show_usage (stderr, 1);
- if (strcmp (input_file, output_file) == 0)
- {
- fprintf (stderr,
- "%s: input and output files must be different\n",
- program_name);
- exit (1);
- }
- }
- }
-
- /* Initialize the header information to default values. */
- fixed_hdr = &fixed_hdr_struct;
- memset ((PTR) &fixed_hdr_struct, 0, sizeof fixed_hdr_struct);
- var_hdr = &var_hdr_struct;
- memset ((PTR) &var_hdr_struct, 0, sizeof var_hdr_struct);
- version_hdr = &version_hdr_struct;
- memset ((PTR) &version_hdr_struct, 0, sizeof version_hdr_struct);
- copyright_hdr = ©right_hdr_struct;
- memset ((PTR) ©right_hdr_struct, 0, sizeof copyright_hdr_struct);
- extended_hdr = &extended_hdr_struct;
- memset ((PTR) &extended_hdr_struct, 0, sizeof extended_hdr_struct);
- check_procedure = NULL;
- custom_file = NULL;
- debug_info = false;
- exit_procedure = "_Stop";
- export_symbols = NULL;
- map_file = NULL;
- full_map = false;
- help_file = NULL;
- import_symbols = NULL;
- message_file = NULL;
- modules = NULL;
- sharelib_file = NULL;
- start_procedure = "_Prelude";
- verbose = false;
- rpc_file = NULL;
-
- parse_errors = 0;
-
- /* Parse the header file (if there is one). */
- if (header_file != NULL)
- {
- if (! nlmlex_file (header_file)
- || yyparse () != 0
- || parse_errors != 0)
- exit (1);
- }
-
- if (input_files != NULL)
- {
- if (input_file != NULL)
- {
- fprintf (stderr,
- "%s: input file named both on command line and with INPUT\n",
- program_name);
- exit (1);
- }
- if (input_files->next == NULL)
- input_file = input_files->string;
- else
- input_file = link_inputs (input_files, ld_arg);
- }
- else if (input_file == NULL)
- {
- fprintf (stderr, "%s: no input file\n", program_name);
- show_usage (stderr, 1);
- }
-
- inbfd = bfd_openr (input_file, input_format);
- if (inbfd == NULL)
- bfd_fatal (input_file);
-
- if (! bfd_check_format_matches (inbfd, bfd_object, &matching))
- {
- bfd_nonfatal (input_file);
- if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
- {
- list_matching_formats (matching);
- free (matching);
- }
- exit (1);
- }
-
- if (output_format == NULL)
- output_format = select_output_format (bfd_get_arch (inbfd),
- bfd_get_mach (inbfd),
- inbfd->xvec->byteorder_big_p);
-
- assert (output_format != NULL);
-
- /* Use the output file named on the command line if it exists.
- Otherwise use the file named in the OUTPUT statement. */
- if (output_file == NULL)
- {
- fprintf (stderr, "%s: no name for output file\n",
- program_name);
- show_usage (stderr, 1);
- }
-
- outbfd = bfd_openw (output_file, output_format);
- if (outbfd == NULL)
- bfd_fatal (output_file);
- if (! bfd_set_format (outbfd, bfd_object))
- bfd_fatal (output_file);
-
- assert (bfd_get_flavour (outbfd) == bfd_target_nlm_flavour);
-
- if (bfd_arch_get_compatible (inbfd, outbfd) == NULL)
- fprintf (stderr,
- "%s: warning:input and output formats are not compatible\n",
- program_name);
-
- /* Move the values read from the command file into outbfd. */
- *nlm_fixed_header (outbfd) = fixed_hdr_struct;
- *nlm_variable_header (outbfd) = var_hdr_struct;
- *nlm_version_header (outbfd) = version_hdr_struct;
- *nlm_copyright_header (outbfd) = copyright_hdr_struct;
- *nlm_extended_header (outbfd) = extended_hdr_struct;
-
- /* Start copying the input BFD to the output BFD. */
- if (! bfd_set_file_flags (outbfd, bfd_get_file_flags (inbfd)))
- bfd_fatal (bfd_get_filename (outbfd));
-
- symsize = bfd_get_symtab_upper_bound (inbfd);
- if (symsize < 0)
- bfd_fatal (input_file);
- symbols = (asymbol **) xmalloc (symsize);
- symcount = bfd_canonicalize_symtab (inbfd, symbols);
- if (symcount < 0)
- bfd_fatal (input_file);
-
- /* Make sure we have a .bss section. */
- bss_sec = bfd_get_section_by_name (outbfd, NLM_UNINITIALIZED_DATA_NAME);
- if (bss_sec == NULL)
- {
- bss_sec = bfd_make_section (outbfd, NLM_UNINITIALIZED_DATA_NAME);
- if (bss_sec == NULL
- || ! bfd_set_section_flags (outbfd, bss_sec, SEC_ALLOC)
- || ! bfd_set_section_alignment (outbfd, bss_sec, 1))
- bfd_fatal ("make .bss section");
- }
-
- /* We store the original section names in the .nlmsections section,
- so that programs which understand it can resurrect the original
- sections from the NLM. We will put a pointer to .nlmsections in
- the NLM header area. */
- secsec = bfd_make_section (outbfd, ".nlmsections");
- if (secsec == NULL)
- bfd_fatal ("make .nlmsections section");
- if (! bfd_set_section_flags (outbfd, secsec, SEC_HAS_CONTENTS))
- bfd_fatal ("set .nlmsections flags");
-
- #ifdef NLMCONV_POWERPC
- /* For PowerPC NetWare we need to build stubs for calls to undefined
- 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);
- #endif
-
- /* 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_is_und_section (bfd_get_section (sym)))
- {
- 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;
- }
-
- #ifdef NLMCONV_POWERPC
- /* 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;
- }
- #endif
- }
-
- /* 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_is_und_section (bfd_get_section (sym)))
- {
- 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);
- }
-
- #ifdef NLMCONV_POWERPC
- /* Resolve the stubs we build for PowerPC NetWare. */
- if (bfd_get_arch (inbfd) == bfd_arch_powerpc)
- powerpc_resolve_stubs (inbfd, outbfd);
- #endif
-
- /* 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)
- {
- #ifdef NLMCONV_I386
- case bfd_arch_i386:
- return "nlm32-i386";
- #endif
- #ifdef NLMCONV_SPARC
- case bfd_arch_sparc:
- return "nlm32-sparc";
- #endif
- #ifdef NLMCONV_ALPHA
- case bfd_arch_alpha:
- return "nlm32-alpha";
- #endif
- #ifdef NLMCONV_POWERPC
- case bfd_arch_powerpc:
- return "nlm32-powerpc";
- #endif
- default:
- fprintf (stderr, "%s: support not compiled in 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_get_section_flags (outbfd, outsec)))
- 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))
- {
- #ifdef NLMCONV_I386
- case bfd_arch_i386:
- i386_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
- contents, contents_size);
- break;
- #endif
- #ifdef NLMCONV_ALPHA
- case bfd_arch_alpha:
- alpha_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
- contents, contents_size);
- break;
- #endif
- #ifdef NLMCONV_POWERPC
- case bfd_arch_powerpc:
- powerpc_mangle_relocs (outbfd, insec, relocs_ptr, reloc_count_ptr,
- contents, contents_size);
- break;
- #endif
- 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;
- }
- }
-
- #ifdef NLMCONV_I386
-
- /* 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_is_und_section (bfd_get_section (sym)))
- 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;
- }
- }
- }
-
- #endif /* NLMCONV_I386 */
-
- #ifdef NLMCONV_ALPHA
-
- /* 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_ptr->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_ptr->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;
- }
- }
-
- #endif /* NLMCONV_ALPHA */
-
- #ifdef NLMCONV_POWERPC
-
- /* 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_is_und_section (bfd_get_section (sym)))
- 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");
- }
- }
-
- /* 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 sym_value;
-
- rel = *relocs++;
- sym = *rel->sym_ptr_ptr;
-
- /* Convert any relocs against the .bss section into relocs
- against the .data section. */
- if (strcmp (bfd_get_section_name (outbfd, bfd_get_section (sym)),
- NLM_UNINITIALIZED_DATA_NAME) == 0)
- {
- asection *datasec;
-
- datasec = bfd_get_section_by_name (outbfd,
- NLM_INITIALIZED_DATA_NAME);
- if (datasec != NULL)
- {
- rel->addend += (bfd_get_section_vma (outbfd,
- bfd_get_section (sym))
- + sym->value);
- rel->sym_ptr_ptr = datasec->symbol_ptr_ptr;
- 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)
- sym_value = 0;
- else
- sym_value = 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 (sym_value + 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)
- + sym_value
- + 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)
- + sym_value
- + 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;
- }
- }
-
- #endif /* NLMCONV_POWERPC */
-
- /* 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) * sizeof(char *));
-
- #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 *) "-Ur";
- 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 */
-