/* AIX emulation code for ${EMULATION_NAME}
Copyright 1991, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2006, 2007, 2008
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012
Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
AIX support by Ian Lance Taylor <ian@cygnus.com>
permitted). */
static int textro;
+/* A mask of XCOFF_EXPALL and XCOFF_EXPFULL flags, as set by their
+ associated -b and -bno options. */
+static unsigned int auto_export_flags;
+
+/* A mask of auto_export_flags bits that were explicitly set on the
+ command line. */
+static unsigned int explicit_auto_export_flags;
+
/* Whether to implement Unix like linker semantics. */
static int unix_ld;
{
ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
+ input_flags.dynamic = TRUE;
config.has_shared = TRUE;
/* The link_info.[init|fini]_functions are initialized in ld/lexsup.c.
OPTION_AUTOIMP,
OPTION_ERNOTOK,
OPTION_EROK,
+ OPTION_EXPALL,
+ OPTION_EXPFULL,
OPTION_EXPORT,
OPTION_IMPORT,
OPTION_INITFINI,
OPTION_MAXSTACK,
OPTION_MODTYPE,
OPTION_NOAUTOIMP,
+ OPTION_NOEXPALL,
+ OPTION_NOEXPFULL,
OPTION_NOSTRCMPCT,
OPTION_PD,
OPTION_PT,
{"bernotok", no_argument, NULL, OPTION_ERNOTOK},
{"berok", no_argument, NULL, OPTION_EROK},
{"berrmsg", no_argument, NULL, OPTION_IGNORE},
+ {"bexpall", no_argument, NULL, OPTION_EXPALL},
+ {"bexpfull", no_argument, NULL, OPTION_EXPFULL},
{"bexport", required_argument, NULL, OPTION_EXPORT},
+ {"bbigtoc", no_argument, NULL, OPTION_IGNORE},
{"bf", no_argument, NULL, OPTION_ERNOTOK},
{"bgc", no_argument, &gc, 1},
{"bh", required_argument, NULL, OPTION_IGNORE},
{"bM", required_argument, NULL, OPTION_MODTYPE},
{"bmodtype", required_argument, NULL, OPTION_MODTYPE},
{"bnoautoimp", no_argument, NULL, OPTION_NOAUTOIMP},
+ {"bnoexpall", no_argument, NULL, OPTION_NOEXPALL},
+ {"bnoexpfull", no_argument, NULL, OPTION_NOEXPFULL},
{"bnodelcsect", no_argument, NULL, OPTION_IGNORE},
{"bnoentry", no_argument, NULL, OPTION_IGNORE},
{"bnogc", no_argument, &gc, 0},
{NULL, no_argument, NULL, 0}
};
- /* Options supported by the AIX linker which we do not support: -f,
+ /* Options supported by the AIX linker which we do not support:
-S, -v, -Z, -bbindcmds, -bbinder, -bbindopts, -bcalls, -bcaps,
-bcror15, -bdebugopt, -bdbg, -bdelcsect, -bex?, -bfilelist, -bfl,
-bgcbypass, -bglink, -binsert, -bi, -bloadmap, -bl, -bmap, -bnl,
return FALSE;
}
+/* Helper for option '-f', which specify a list of input files.
+ Contrary to the native linker, we don't support shell patterns
+ (simply because glob isn't always available). */
+
+static void
+read_file_list (const char *filename)
+{
+ FILE *f;
+ /* An upper bound on the number of characters in the file. */
+ long pos;
+ /* File in memory. */
+ char *buffer;
+ size_t len;
+ char *b;
+ char *e;
+
+ f = fopen (filename, FOPEN_RT);
+ if (f == NULL)
+ {
+ einfo ("%F%P: cannot open %s\n", filename);
+ return;
+ }
+ if (fseek (f, 0L, SEEK_END) == -1)
+ goto error;
+ pos = ftell (f);
+ if (pos == -1)
+ goto error;
+ if (fseek (f, 0L, SEEK_SET) == -1)
+ goto error;
+
+ buffer = (char *) xmalloc (pos + 1);
+ len = fread (buffer, sizeof (char), pos, f);
+ if (len != (size_t) pos && ferror (f))
+ goto error;
+ /* Add a NUL terminator. */
+ buffer[len] = '\0';
+ fclose (f);
+
+ /* Parse files. */
+ b = buffer;
+ while (1)
+ {
+ /* Skip empty lines. */
+ while (*b == '\n' || *b == '\r')
+ b++;
+
+ /* Stop if end of buffer. */
+ if (b == buffer + len)
+ break;
+
+ /* Eat any byte until end of line. */
+ for (e = b; *e != '\0'; e++)
+ if (*e == '\n' || *e == '\r')
+ break;
+
+ /* Replace end of line by nul. */
+ if (*e != '\0')
+ *e++ = '\0';
+
+ if (b != e)
+ lang_add_input_file (b, lang_input_file_is_search_file_enum, NULL);
+ b = e;
+ }
+ return;
+
+ error:
+ einfo ("%F%P: cannot read %s\n", optarg);
+ fclose (f);
+}
+
static bfd_boolean
gld${EMULATION_NAME}_handle_option (int optc)
{
/* Long option which just sets a flag. */
break;
+ case 'f':
+ /* This overrides --auxiliary. This option specifies a file containing
+ a list of input files. */
+ read_file_list (optarg);
+ break;
+
case 'D':
val = bfd_scan_vma (optarg, &end, 0);
if (*end != '\0')
break;
case OPTION_ERNOTOK:
- force_make_executable = FALSE;
+ link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
+ link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
break;
case OPTION_EROK:
- force_make_executable = TRUE;
+ link_info.unresolved_syms_in_objects = RM_IGNORE;
+ link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
+ break;
+
+ case OPTION_EXPALL:
+ auto_export_flags |= XCOFF_EXPALL;
+ explicit_auto_export_flags |= XCOFF_EXPALL;
+ break;
+
+ case OPTION_EXPFULL:
+ auto_export_flags |= XCOFF_EXPFULL;
+ explicit_auto_export_flags |= XCOFF_EXPFULL;
break;
case OPTION_EXPORT:
link_info.static_link = TRUE;
break;
+ case OPTION_NOEXPALL:
+ auto_export_flags &= ~XCOFF_EXPALL;
+ explicit_auto_export_flags |= XCOFF_EXPALL;
+ break;
+
+ case OPTION_NOEXPFULL:
+ auto_export_flags &= ~XCOFF_EXPFULL;
+ explicit_auto_export_flags |= XCOFF_EXPFULL;
+ break;
+
case OPTION_NOSTRCMPCT:
link_info.traditional_format = TRUE;
break;
*flpp = n;
ret = TRUE;
- entry->loaded = TRUE;
+ entry->flags.loaded = TRUE;
}
fclose (e);
bfd_boolean r;
struct set_info *p;
+ after_open_default ();
+
/* Call ldctor_build_sets, after pretending that this is a
relocatable link. We do this because AIX requires relocation
entries for all references to symbols, even in a final
struct export_symbol_list *el;
char *libpath;
asection *special_sections[XCOFF_NUMBER_OF_SPECIAL_SECTIONS];
- int i;
+ static const char *const must_keep_sections[] = {
+ ".text",
+ ".data",
+ ".bss"
+ };
+ unsigned int i, flags;
/* Handle the import and export files, if any. */
for (fl = import_files; fl != NULL; fl = fl->next)
}
}
+ /* Default to -bexpfull for SVR4-like semantics. */
+ flags = (unix_ld ? XCOFF_EXPFULL : 0);
+ flags &= ~explicit_auto_export_flags;
+ flags |= auto_export_flags;
+
/* Let the XCOFF backend set up the .loader section. */
if (!bfd_xcoff_size_dynamic_sections
(link_info.output_bfd, &link_info, libpath, entry_symbol.name, file_align,
maxstack, maxdata, gc && !unix_ld ? TRUE : FALSE,
- modtype, textro ? TRUE : FALSE, unix_ld, special_sections,
+ modtype, textro ? TRUE : FALSE, flags, special_sections,
rtld ? TRUE : FALSE))
einfo ("%P%F: failed to set dynamic section sizes: %E\n");
}
}
+ /* Executables and shared objects must always have .text, .data
+ and .bss output sections, so that the header can refer to them.
+ The kernel refuses to load objects that have missing sections. */
+ if (!link_info.relocatable)
+ for (i = 0; i < ARRAY_SIZE (must_keep_sections); i++)
+ {
+ asection *sec;
+
+ sec = bfd_get_section_by_name (link_info.output_bfd,
+ must_keep_sections[i]);
+ if (sec == NULL)
+ einfo ("%P: can't find required output section %s\n", must_keep_sections[i]);
+ else
+ sec->flags |= SEC_KEEP;
+ }
+
before_allocation_default ();
}
else
{
char cs;
- char *file;
+ char *start;
(void) obstack_finish (o);
keep = TRUE;
- imppath = s;
- file = NULL;
+ start = s;
while (!ISSPACE (*s) && *s != '(' && *s != '\0')
- {
- if (*s == '/')
- file = s + 1;
- ++s;
- }
- if (file != NULL)
- {
- file[-1] = '\0';
- impfile = file;
- if (imppath == file - 1)
- imppath = "/";
- }
- else
- {
- impfile = imppath;
- imppath = "";
- }
+ ++s;
cs = *s;
*s = '\0';
+ if (!bfd_xcoff_split_import_path (link_info.output_bfd,
+ start, &imppath, &impfile))
+ einfo ("%F%P: Could not parse import path: %E\n");
while (ISSPACE (cs))
{
++s;
{
struct export_symbol_list *n;
- ldlang_add_undef (symname);
+ ldlang_add_undef (symname, TRUE);
n = ((struct export_symbol_list *)
xmalloc (sizeof (struct export_symbol_list)));
n->next = export_symbols;
ldfile_output_machine_name = bfd_printable_name (link_info.output_bfd);
}
+static bfd_boolean
+gld${EMULATION_NAME}_open_dynamic_archive (const char *arch,
+ search_dirs_type *search,
+ lang_input_statement_type *entry)
+{
+ char *path;
+
+ if (!entry->flags.maybe_archive)
+ return FALSE;
+
+ path = concat (search->name, "/lib", entry->filename, arch, ".a", NULL);
+ if (!ldfile_try_open_bfd (path, entry))
+ {
+ free (path);
+ return FALSE;
+ }
+ /* Don't include the searched directory in the import path. */
+ bfd_xcoff_set_archive_import_path (&link_info, entry->the_bfd,
+ path + strlen (search->name) + 1);
+ entry->filename = path;
+ return TRUE;
+}
+
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = {
gld${EMULATION_NAME}_before_parse,
syslib_default,
"${OUTPUT_FORMAT}",
finish_default,
gld${EMULATION_NAME}_create_output_section_statements,
- 0, /* open_dynamic_archive */
+ gld${EMULATION_NAME}_open_dynamic_archive,
0, /* place_orphan */
0, /* set_symbols */
gld${EMULATION_NAME}_parse_args,