Mercurial > hg > xemacs-beta
view src/sysdll.c @ 4952:19a72041c5ed
Mule-izing, various fixes related to char * arguments
-------------------- ChangeLog entries follow: --------------------
modules/ChangeLog addition:
2010-01-26 Ben Wing <ben@xemacs.org>
* postgresql/postgresql.c:
* postgresql/postgresql.c (CHECK_LIVE_CONNECTION):
* postgresql/postgresql.c (print_pgresult):
* postgresql/postgresql.c (Fpq_conn_defaults):
* postgresql/postgresql.c (Fpq_connectdb):
* postgresql/postgresql.c (Fpq_connect_start):
* postgresql/postgresql.c (Fpq_result_status):
* postgresql/postgresql.c (Fpq_res_status):
Mule-ize large parts of it.
2010-01-26 Ben Wing <ben@xemacs.org>
* ldap/eldap.c (print_ldap):
* ldap/eldap.c (allocate_ldap):
Use write_ascstring().
src/ChangeLog addition:
2010-01-26 Ben Wing <ben@xemacs.org>
* alloc.c:
* alloc.c (build_ascstring):
* alloc.c (build_msg_cistring):
* alloc.c (staticpro_1):
* alloc.c (staticpro_name):
* alloc.c (staticpro_nodump_1):
* alloc.c (staticpro_nodump_name):
* alloc.c (unstaticpro_nodump_1):
* alloc.c (mcpro_1):
* alloc.c (mcpro_name):
* alloc.c (object_memory_usage_stats):
* alloc.c (common_init_alloc_early):
* alloc.c (init_alloc_once_early):
* buffer.c (print_buffer):
* buffer.c (vars_of_buffer):
* buffer.c (common_init_complex_vars_of_buffer):
* buffer.c (init_initial_directory):
* bytecode.c (invalid_byte_code):
* bytecode.c (print_compiled_function):
* bytecode.c (mark_compiled_function):
* chartab.c (print_table_entry):
* chartab.c (print_char_table):
* config.h.in:
* console-gtk.c:
* console-gtk.c (gtk_device_to_console_connection):
* console-gtk.c (gtk_semi_canonicalize_console_connection):
* console-gtk.c (gtk_canonicalize_console_connection):
* console-gtk.c (gtk_semi_canonicalize_device_connection):
* console-gtk.c (gtk_canonicalize_device_connection):
* console-stream.c (stream_init_frame_1):
* console-stream.c (vars_of_console_stream):
* console-stream.c (init_console_stream):
* console-x.c (x_semi_canonicalize_console_connection):
* console-x.c (x_semi_canonicalize_device_connection):
* console-x.c (x_canonicalize_device_connection):
* console-x.h:
* data.c (eq_with_ebola_notice):
* data.c (Fsubr_interactive):
* data.c (Fnumber_to_string):
* data.c (digit_to_number):
* device-gtk.c (gtk_init_device):
* device-msw.c (print_devmode):
* device-x.c (x_event_name):
* dialog-msw.c (handle_directory_dialog_box):
* dialog-msw.c (handle_file_dialog_box):
* dialog-msw.c (vars_of_dialog_mswindows):
* doc.c (weird_doc):
* doc.c (Fsnarf_documentation):
* doc.c (vars_of_doc):
* dumper.c (pdump):
* dynarr.c:
* dynarr.c (Dynarr_realloc):
* editfns.c (Fuser_real_login_name):
* editfns.c (get_home_directory):
* elhash.c (print_hash_table_data):
* elhash.c (print_hash_table):
* emacs.c (main_1):
* emacs.c (vars_of_emacs):
* emodules.c:
* emodules.c (_emodules_list):
* emodules.c (Fload_module):
* emodules.c (Funload_module):
* emodules.c (Flist_modules):
* emodules.c (find_make_module):
* emodules.c (attempt_module_delete):
* emodules.c (emodules_load):
* emodules.c (emodules_doc_subr):
* emodules.c (emodules_doc_sym):
* emodules.c (syms_of_module):
* emodules.c (vars_of_module):
* emodules.h:
* eval.c (print_subr):
* eval.c (signal_call_debugger):
* eval.c (build_error_data):
* eval.c (signal_error):
* eval.c (maybe_signal_error):
* eval.c (signal_continuable_error):
* eval.c (maybe_signal_continuable_error):
* eval.c (signal_error_2):
* eval.c (maybe_signal_error_2):
* eval.c (signal_continuable_error_2):
* eval.c (maybe_signal_continuable_error_2):
* eval.c (signal_ferror):
* eval.c (maybe_signal_ferror):
* eval.c (signal_continuable_ferror):
* eval.c (maybe_signal_continuable_ferror):
* eval.c (signal_ferror_with_frob):
* eval.c (maybe_signal_ferror_with_frob):
* eval.c (signal_continuable_ferror_with_frob):
* eval.c (maybe_signal_continuable_ferror_with_frob):
* eval.c (syntax_error):
* eval.c (syntax_error_2):
* eval.c (maybe_syntax_error):
* eval.c (sferror):
* eval.c (sferror_2):
* eval.c (maybe_sferror):
* eval.c (invalid_argument):
* eval.c (invalid_argument_2):
* eval.c (maybe_invalid_argument):
* eval.c (invalid_constant):
* eval.c (invalid_constant_2):
* eval.c (maybe_invalid_constant):
* eval.c (invalid_operation):
* eval.c (invalid_operation_2):
* eval.c (maybe_invalid_operation):
* eval.c (invalid_change):
* eval.c (invalid_change_2):
* eval.c (maybe_invalid_change):
* eval.c (invalid_state):
* eval.c (invalid_state_2):
* eval.c (maybe_invalid_state):
* eval.c (wtaerror):
* eval.c (stack_overflow):
* eval.c (out_of_memory):
* eval.c (print_multiple_value):
* eval.c (issue_call_trapping_problems_warning):
* eval.c (backtrace_specials):
* eval.c (backtrace_unevalled_args):
* eval.c (Fbacktrace):
* eval.c (warn_when_safe):
* event-Xt.c (modwarn):
* event-Xt.c (modbarf):
* event-Xt.c (check_modifier):
* event-Xt.c (store_modifier):
* event-Xt.c (emacs_Xt_format_magic_event):
* event-Xt.c (describe_event):
* event-gtk.c (dragndrop_data_received):
* event-gtk.c (store_modifier):
* event-gtk.c (gtk_reset_modifier_mapping):
* event-msw.c (dde_eval_string):
* event-msw.c (Fdde_alloc_advise_item):
* event-msw.c (mswindows_dde_callback):
* event-msw.c (FROB):
* event-msw.c (emacs_mswindows_format_magic_event):
* event-stream.c (external_debugging_print_event):
* event-stream.c (execute_help_form):
* event-stream.c (vars_of_event_stream):
* events.c (print_event_1):
* events.c (print_event):
* events.c (event_equal):
* extents.c (print_extent_1):
* extents.c (print_extent):
* extents.c (vars_of_extents):
* faces.c (print_face):
* faces.c (complex_vars_of_faces):
* file-coding.c:
* file-coding.c (print_coding_system):
* file-coding.c (print_coding_system_in_print_method):
* file-coding.c (default_query_method):
* file-coding.c (find_coding_system):
* file-coding.c (make_coding_system_1):
* file-coding.c (chain_print):
* file-coding.c (undecided_print):
* file-coding.c (gzip_print):
* file-coding.c (vars_of_file_coding):
* file-coding.c (complex_vars_of_file_coding):
* fileio.c:
* fileio.c (report_file_type_error):
* fileio.c (report_error_with_errno):
* fileio.c (report_file_error):
* fileio.c (barf_or_query_if_file_exists):
* fileio.c (vars_of_fileio):
* floatfns.c (matherr):
* fns.c (print_bit_vector):
* fns.c (Fmapconcat):
* fns.c (add_suffix_to_symbol):
* fns.c (add_prefix_to_symbol):
* frame-gtk.c:
* frame-gtk.c (Fgtk_window_id):
* frame-x.c (def):
* frame-x.c (x_cde_transfer_callback):
* frame.c:
* frame.c (Fmake_frame):
* gc.c (show_gc_cursor_and_message):
* gc.c (vars_of_gc):
* glyphs-eimage.c (png_instantiate):
* glyphs-eimage.c (tiff_instantiate):
* glyphs-gtk.c (gtk_print_image_instance):
* glyphs-msw.c (mswindows_print_image_instance):
* glyphs-x.c (x_print_image_instance):
* glyphs-x.c (update_widget_face):
* glyphs.c (make_string_from_file):
* glyphs.c (print_image_instance):
* glyphs.c (signal_image_error):
* glyphs.c (signal_image_error_2):
* glyphs.c (signal_double_image_error):
* glyphs.c (signal_double_image_error_2):
* glyphs.c (xbm_mask_file_munging):
* glyphs.c (pixmap_to_lisp_data):
* glyphs.h:
* gui.c (gui_item_display_flush_left):
* hpplay.c (player_error_internal):
* hpplay.c (myHandler):
* intl-win32.c:
* intl-win32.c (langcode_to_lang):
* intl-win32.c (sublangcode_to_lang):
* intl-win32.c (Fmswindows_get_locale_info):
* intl-win32.c (lcid_to_locale_mule_or_no):
* intl-win32.c (mswindows_multibyte_to_unicode_print):
* intl-win32.c (complex_vars_of_intl_win32):
* keymap.c:
* keymap.c (print_keymap):
* keymap.c (ensure_meta_prefix_char_keymapp):
* keymap.c (Fkey_description):
* keymap.c (Ftext_char_description):
* lisp.h:
* lisp.h (struct):
* lisp.h (DECLARE_INLINE_HEADER):
* lread.c (Fload_internal):
* lread.c (locate_file):
* lread.c (read_escape):
* lread.c (read_raw_string):
* lread.c (read1):
* lread.c (read_list):
* lread.c (read_compiled_function):
* lread.c (init_lread):
* lrecord.h:
* marker.c (print_marker):
* marker.c (marker_equal):
* menubar-msw.c (displayable_menu_item):
* menubar-x.c (command_builder_operate_menu_accelerator):
* menubar.c (vars_of_menubar):
* minibuf.c (reinit_complex_vars_of_minibuf):
* minibuf.c (complex_vars_of_minibuf):
* mule-charset.c (Fmake_charset):
* mule-charset.c (complex_vars_of_mule_charset):
* mule-coding.c (iso2022_print):
* mule-coding.c (fixed_width_query):
* number.c (bignum_print):
* number.c (ratio_print):
* number.c (bigfloat_print):
* number.c (bigfloat_finalize):
* objects-msw.c:
* objects-msw.c (mswindows_color_to_string):
* objects-msw.c (mswindows_color_list):
* objects-tty.c:
* objects-tty.c (tty_font_list):
* objects-tty.c (tty_find_charset_font):
* objects-xlike-inc.c (xft_find_charset_font):
* objects-xlike-inc.c (endif):
* print.c:
* print.c (write_istring):
* print.c (write_ascstring):
* print.c (Fterpri):
* print.c (Fprint):
* print.c (print_error_message):
* print.c (print_vector_internal):
* print.c (print_cons):
* print.c (print_string):
* print.c (printing_unreadable_object):
* print.c (print_internal):
* print.c (print_float):
* print.c (print_symbol):
* process-nt.c (mswindows_report_winsock_error):
* process-nt.c (nt_canonicalize_host_name):
* process-unix.c (unix_canonicalize_host_name):
* process.c (print_process):
* process.c (report_process_error):
* process.c (report_network_error):
* process.c (make_process_internal):
* process.c (Fstart_process_internal):
* process.c (status_message):
* process.c (putenv_internal):
* process.c (vars_of_process):
* process.h:
* profile.c (vars_of_profile):
* rangetab.c (print_range_table):
* realpath.c (vars_of_realpath):
* redisplay.c (vars_of_redisplay):
* search.c (wordify):
* search.c (Freplace_match):
* sheap.c (sheap_adjust_h):
* sound.c (report_sound_error):
* sound.c (Fplay_sound_file):
* specifier.c (print_specifier):
* symbols.c (Fsubr_name):
* symbols.c (do_symval_forwarding):
* symbols.c (set_default_buffer_slot_variable):
* symbols.c (set_default_console_slot_variable):
* symbols.c (store_symval_forwarding):
* symbols.c (default_value):
* symbols.c (defsymbol_massage_name_1):
* symbols.c (defsymbol_massage_name_nodump):
* symbols.c (defsymbol_massage_name):
* symbols.c (defsymbol_massage_multiword_predicate_nodump):
* symbols.c (defsymbol_massage_multiword_predicate):
* symbols.c (defsymbol_nodump):
* symbols.c (defsymbol):
* symbols.c (defkeyword):
* symbols.c (defkeyword_massage_name):
* symbols.c (check_module_subr):
* symbols.c (deferror_1):
* symbols.c (deferror):
* symbols.c (deferror_massage_name):
* symbols.c (deferror_massage_name_and_message):
* symbols.c (defvar_magic):
* symeval.h:
* symeval.h (DEFVAR_SYMVAL_FWD):
* sysdep.c:
* sysdep.c (init_system_name):
* sysdll.c:
* sysdll.c (MAYBE_PREPEND_UNDERSCORE):
* sysdll.c (dll_function):
* sysdll.c (dll_variable):
* sysdll.c (dll_error):
* sysdll.c (dll_open):
* sysdll.c (dll_close):
* sysdll.c (image_for_address):
* sysdll.c (my_find_image):
* sysdll.c (search_linked_libs):
* sysdll.h:
* sysfile.h:
* sysfile.h (DEFAULT_DIRECTORY_FALLBACK):
* syswindows.h:
* tests.c (DFC_CHECK_LENGTH):
* tests.c (DFC_CHECK_CONTENT):
* tests.c (Ftest_hash_tables):
* text.c (vars_of_text):
* text.h:
* tooltalk.c (tt_opnum_string):
* tooltalk.c (tt_message_arg_ival_string):
* tooltalk.c (Ftooltalk_default_procid):
* tooltalk.c (Ftooltalk_default_session):
* tooltalk.c (init_tooltalk):
* tooltalk.c (vars_of_tooltalk):
* ui-gtk.c (Fdll_load):
* ui-gtk.c (type_to_marshaller_type):
* ui-gtk.c (Fgtk_import_function_internal):
* ui-gtk.c (emacs_gtk_object_printer):
* ui-gtk.c (emacs_gtk_boxed_printer):
* unicode.c (unicode_to_ichar):
* unicode.c (unicode_print):
* unicode.c (unicode_query):
* unicode.c (vars_of_unicode):
* unicode.c (complex_vars_of_unicode):
* win32.c:
* win32.c (mswindows_report_process_error):
* window.c (print_window):
* xemacs.def.in.in:
BASIC IDEA: Further fixing up uses of char * and CIbyte *
to reflect their actual semantics; Mule-izing some code;
redoing of the not-yet-working code to handle message translation.
Clean up code to handle message-translation (not yet working).
Create separate versions of build_msg_string() for working with
Ibyte *, CIbyte *, and Ascbyte * arguments. Assert that Ascbyte *
arguments are pure-ASCII. Make build_msg_string() be the same
as build_msg_ascstring(). Create same three versions of GETTEXT()
and DEFER_GETTEXT(). Also create build_defer_string() and
variants for the equivalent of DEFER_GETTEXT() when building a
string. Remove old CGETTEXT(). Clean up code where GETTEXT(),
DEFER_GETTEXT(), build_msg_string(), etc. was being called and
introduce some new calls to build_msg_string(), etc. Remove
GETTEXT() from calls to weird_doc() -- we assume that the
message snarfer knows about weird_doc(). Remove uses of
DEFER_GETTEXT() from error messages in sysdep.c and instead use
special comments /* @@@begin-snarf@@@ */ and /* @@@end-snarf@@@ */
that the message snarfer presumably knows about.
Create build_ascstring() and use it in many instances in place
of build_string(). The purpose of having Ascbyte * variants is
to make the code more self-documenting in terms of what sort of
semantics is expected for char * strings. In fact in the process
of looking for uses of build_string(), much improperly Mule-ized
was discovered.
Mule-ize a lot of code as described in previous paragraph,
e.g. in sysdep.c.
Make the error functions take Ascbyte * strings and fix up a
couple of places where non-pure-ASCII strings were being passed in
(file-coding.c, mule-coding.c, unicode.c). (It's debatable whether
we really need to make the error functions work this way. It
helps catch places where code is written in a way that message
translation won't work, but we may well never implement message
translation.)
Make staticpro() and friends take Ascbyte * strings instead of
raw char * strings. Create a const_Ascbyte_ptr dynarr type
to describe what's held by staticpro_names[] and friends,
create pdump descriptions for const_Ascbyte_ptr dynarrs, and
use them in place of specially-crafted staticpro descriptions.
Mule-ize certain other functions (e.g. x_event_name) by correcting
raw use of char * to Ascbyte *, Rawbyte * or another such type,
and raw use of char[] buffers to another type (usually Ascbyte[]).
Change many uses of write_c_string() to write_msg_string(),
write_ascstring(), etc.
Mule-ize emodules.c, emodules.h, sysdll.h.
Fix some un-Mule-ized code in intl-win32.c.
A comment in event-Xt.c and the limitations of the message
snarfer (make-msgfile or whatever) is presumably incorrect --
it should be smart enough to handle function calls spread over
more than one line. Clean up code in event-Xt.c that was
written awkwardly for this reason.
In config.h.in, instead of NEED_ERROR_CHECK_TYPES_INLINES,
create a more general XEMACS_DEFS_NEEDS_INLINE_DECLS to
indicate when inlined functions need to be declared in
xemacs.defs.in.in, and make use of it in xemacs.defs.in.in.
We need to do this because postgresql.c now calls qxestrdup(),
which is an inline function.
Make nconc2() and other such functions MODULE_API and put
them in xemacs.defs.in.in since postgresql.c now uses them.
Clean up indentation in lread.c and a few other places.
In text.h, document ASSERT_ASCTEXT_ASCII() and
ASSERT_ASCTEXT_ASCII_LEN(), group together the stand-in
encodings and add some more for DLL symbols, function and
variable names, etc.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Tue, 26 Jan 2010 23:22:30 -0600 |
| parents | b3ea9c582280 |
| children | 304aebb79cd3 |
line wrap: on
line source
/* sysdll.c --- system dependent support for dynamic linked libraries Copyright (C) 1998 Free Software Foundation, Inc. Copyright (C) 2010 Ben Wing. Author: William Perry <wmperry@aventail.com> This file is part of XEmacs. XEmacs 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, or (at your option) any later version. XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* This file has been Mule-ized, Ben Wing, 1-26-10. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdlib.h> #include "lisp.h" #include "sysdll.h" #ifdef DLSYM_NEEDS_UNDERSCORE #define MAYBE_PREPEND_UNDERSCORE(n) do { \ Ibyte *buf = alloca_array (Ibyte, qxestrlen (n) + 2); \ *buf = '_'; \ qxestrcpy (buf + 1, n); \ n = buf; \ } while (0) #else #define MAYBE_PREPEND_UNDERSCORE(n) #endif /* This whole file is conditional upon HAVE_SHLIB */ #ifdef HAVE_SHLIB /* Thankfully, most systems follow the ELFish dlopen() method. */ #if defined(HAVE_DLOPEN) #include <dlfcn.h> #ifndef RTLD_LAZY # ifdef DL_LAZY # define RTLD_LAZY DL_LAZY # else # define RTLD_LAZY 1 # endif #endif /* RTLD_LAZY isn't defined under FreeBSD - ick */ #ifndef RTLD_NOW # ifdef DL_NOW # define RTLD_NOW DL_NOW # else # define RTLD_NOW 2 # endif #endif dll_handle dll_open (Lisp_Object fname) { Extbyte *soname; if (NILP (fname)) { soname = NULL; } else { LISP_STRING_TO_EXTERNAL (fname, soname, Qdll_filename_encoding); } return (dll_handle) dlopen (soname, RTLD_NOW); } int dll_close (dll_handle h) { return dlclose ((void *) h); } dll_func dll_function (dll_handle h, const Ibyte *n) { Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_function_name_encoding); return (dll_func) dlsym ((void *) h, next); } dll_var dll_variable (dll_handle h, const Ibyte *n) { Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_variable_name_encoding); return (dll_var)dlsym ((void *)h, next); } Lisp_Object dll_error () { const Extbyte *msg; #if defined(HAVE_DLERROR) || defined(dlerror) msg = (const Extbyte *) dlerror (); #elif defined(HAVE__DLERROR) msg = (const Extbyte *) _dlerror(); #else msg = (const Extbyte *) "Shared library error"; #endif return build_ext_string (msg, Qerror_message_encoding); } #elif defined(HAVE_SHL_LOAD) /* This is the HP/UX version */ #include <dl.h> dll_handle dll_open (Lisp_Object fname) { Extbyte *soname; if (NILP (fname)) { soname = NULL; } else { LISP_STRING_TO_EXTERNAL (fname, soname, Qdll_filename_encoding); } return (dll_handle) shl_load (soname, BIND_DEFERRED, 0L); } int dll_close (dll_handle h) { return shl_unload ((shl_t) h); } dll_func dll_function (dll_handle h, const CIbyte *n) { long handle = 0L; if (shl_findsym ((shl_t *) &h, n, TYPE_PROCEDURE, &handle)) return NULL; return (dll_func) handle; } dll_var dll_variable (dll_handle h, const CIbyte *n) { long handle = 0L; if (shl_findsym ((shl_t *) &h, n, TYPE_DATA, &handle)) return NULL; return (dll_var) handle; } Lisp_Object dll_error () { /* #### WTF?! Shouldn't this at least attempt to get strerror or something? --hniksic */ return build_ascstring ("Generic shared library error"); } #elif defined (WIN32_NATIVE) || defined (CYGWIN) #include "syswindows.h" #include "sysfile.h" dll_handle dll_open (Lisp_Object fname) { Extbyte *soname; if (NILP (fname)) { soname = NULL; } else { LISP_LOCAL_FILE_FORMAT_TO_TSTR (fname, soname); } return (dll_handle) qxeLoadLibrary (soname); } int dll_close (dll_handle h) { return FreeLibrary ((HMODULE) h); } dll_func dll_function (dll_handle h, const Ibyte *n) { Extbyte *next = NEW_C_STRING_TO_EXTERNAL (n, Qmswindows_multibyte); return (dll_func) GetProcAddress ((HINSTANCE) h, next); } dll_func dll_variable (dll_handle h, const Ibyte *n) { Extbyte *next = NEW_C_STRING_TO_EXTERNAL (n, Qmswindows_multibyte); return (dll_func) GetProcAddress ((HINSTANCE) h, next); } Lisp_Object dll_error () { Ascbyte err[32]; snprintf (err, 32, "Windows DLL Error %lu", GetLastError ()); return build_ascstring (err); } #elif defined (HAVE_DYLD) /* This section supports MacOSX dynamic libraries. Dynamically loadable libraries must be compiled as bundles, not dynamiclibs. */ #include <mach-o/dyld.h> dll_handle dll_open (Lisp_Object fname) { Extbyte *soname; NSObjectFileImage file; NSModule out; NSObjectFileImageReturnCode ret; /* * MacOS X dll support is for bundles, not the current executable, so return * NULL is this case. However, dll_function() uses a special hack where a * NULL handle can be used to find executable symbols. This satisfies the * needs of ui-gtk.c but is not a general solution. */ if (NILP (fname)) { return NULL; } else { LISP_STRING_TO_EXTERNAL (fname, soname, Qdll_filename_encoding); } ret = NSCreateObjectFileImageFromFile (soname, &file); if (ret != NSObjectFileImageSuccess) return NULL; out = NSLinkModule (file, soname, NSLINKMODULE_OPTION_BINDNOW | NSLINKMODULE_OPTION_PRIVATE | NSLINKMODULE_OPTION_RETURN_ON_ERROR); return (dll_handle) out; } int dll_close (dll_handle h) { return NSUnLinkModule ((NSModule) h, NSUNLINKMODULE_OPTION_NONE); } /* Given an address, return the mach_header for the image containing it * or zero if the given address is not contained in any loaded images. * * Note: image_for_address(), my_find_image() and search_linked_libs() are * based on code from the dlcompat library * (http://www.opendarwin.org/projects/dlcompat). */ static const struct mach_header * image_for_address (void *address) { unsigned long i; unsigned long count = _dyld_image_count (); const struct mach_header *mh = 0; for (i = 0; i < count; i++) { unsigned long addr = (unsigned long) address - _dyld_get_image_vmaddr_slide (i); mh = _dyld_get_image_header (i); if (mh) { struct load_command *lc = (struct load_command *) ((Rawbyte *) mh + sizeof(struct mach_header)); unsigned long j; for (j = 0; j < mh->ncmds; j++, lc = (struct load_command *) ((Rawbyte *)lc + lc->cmdsize)) { if (LC_SEGMENT == lc->cmd && addr >= ((struct segment_command *)lc)->vmaddr && addr < ((struct segment_command *)lc)->vmaddr + ((struct segment_command *)lc)->vmsize) { goto image_found; } } } mh = 0; } image_found: return mh; } static const struct mach_header * my_find_image (const char *name) { const struct mach_header *mh = (struct mach_header *) NSAddImage (name, NSADDIMAGE_OPTION_RETURN_ONLY_IF_LOADED | NSADDIMAGE_OPTION_RETURN_ON_ERROR); if (!mh) { int count = _dyld_image_count (); int j; for (j = 0; j < count; j++) { const char *id = _dyld_get_image_name (j); if (!strcmp (id, name)) { mh = _dyld_get_image_header (j); break; } } } return mh; } /* * dyld adds libraries by first adding the directly dependant libraries in * link order, and then adding the dependencies for those libraries, so we * should do the same... but we don't bother adding the extra dependencies, if * the symbols are neither in the loaded image nor any of it's direct * dependencies, then it probably isn't there. */ static NSSymbol search_linked_libs (const struct mach_header * mh, const Ibyte *symbol) { unsigned long n; NSSymbol nssym = 0; struct load_command *lc = (struct load_command *) ((Rawbyte *) mh + sizeof (struct mach_header)); for (n = 0; n < mh->ncmds; n++, lc = (struct load_command *) ((Rawbyte *) lc + lc->cmdsize)) { if ((LC_LOAD_DYLIB == lc->cmd) || (LC_LOAD_WEAK_DYLIB == lc->cmd)) { struct mach_header *wh; if ((wh = (struct mach_header *) my_find_image((Rawbyte *) (((struct dylib_command *) lc)-> dylib.name.offset + (Rawbyte *) lc)))) { Extbyte *symext = NEW_C_STRING_TO_EXTERNAL (symbol, Qdll_symbol_encoding); if (NSIsSymbolNameDefinedInImage (wh, symext)) { nssym = NSLookupSymbolInImage (wh, symext, NSLOOKUPSYMBOLINIMAGE_OPTION_BIND | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); break; } } } } return nssym; } dll_func dll_function (dll_handle h, const Ibyte *n) { NSSymbol sym = 0; Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_function_name_encoding); /* NULL means the program image and shared libraries, not bundles. */ if (h == NULL) { /* NOTE: This assumes that this function is included in the main program and not in a shared library. */ const struct mach_header* my_mh = image_for_address ((void*) &dll_function); if (NSIsSymbolNameDefinedInImage (my_mh, next)) { sym = NSLookupSymbolInImage (my_mh, next, NSLOOKUPSYMBOLINIMAGE_OPTION_BIND | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); } if (!sym) { sym = search_linked_libs (my_mh, n); } } else { sym = NSLookupSymbolInModule ((NSModule)h, next); } if (sym == 0) return 0; return (dll_func) NSAddressOfSymbol (sym); } dll_var dll_variable (dll_handle h, const Ibyte *n) { NSSymbol sym; Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_variable_name_encoding); sym = NSLookupSymbolInModule ((NSModule) h, n); if (sym == 0) return 0; return (dll_var) NSAddressOfSymbol (sym); } Lisp_Object dll_error (void) { NSLinkEditErrors c; int errorNumber; const Extbyte *fileNameWithError, *errorString; NSLinkEditError (&c, &errorNumber, &fileNameWithError, &errorString); return build_ext_string (errorString, Qerror_message_encoding); } #elif HAVE_LTDL /* Libtool's libltdl */ #include <ltdl.h> dll_handle dll_open (Lisp_Object fname) { Extbyte *soname; if (NILP (fname)) { soname = NULL; } else { LISP_STRING_TO_EXTERNAL (fname, soname, Qdll_filename_encoding); } return (dll_handle) lt_dlopen (soname); } int dll_close (dll_handle h) { return lt_dlclose ((lt_dlhandle) h); } dll_func dll_function (dll_handle h, const Ibyte *n) { Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_function_name_encoding); return (dll_func) lt_dlsym ((lt_dlhandle) h, next); } dll_var dll_variable (dll_handle h, const Ibyte *n) { Extbyte *next; MAYBE_PREPEND_UNDERSCORE (n); C_STRING_TO_EXTERNAL (n, next, Qdll_variable_name_encoding); return (dll_var) lt_dlsym ((lt_dlhandle) h, next); } Lisp_Object dll_error (void) { return build_ext_string (lt_dlerror (), Qerror_message_encoding); } #else /* Catchall if we don't know about this system's method of dynamic loading */ dll_handle dll_open (Lisp_Object fname) { return NULL; } int dll_close (dll_handle h) { return 0; } dll_func dll_function (dll_handle h, const Ibyte *n) { return NULL; } dll_func dll_variable (dll_handle h, const Ibyte *n) { return NULL; } Lisp_Object dll_error (void) { return build_ascstring ("Shared libraries not implemented on this system"); } #endif /* System conditionals */ #endif /* HAVE_SHLIB */